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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 | */ | |
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 | |
8f1d2e6f JH |
25 | #endif |
26 | #endif | |
27 | ||
b4f2a6ac JH |
28 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
29 | ||
8723f216 NP |
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)))) | |
db7244bd | 37 | #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */ |
8723f216 | 38 | |
cf606e3d AW |
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 | ||
457bb452 | 42 | #if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && !defined(_M_UNIX) |
85023577 | 43 | #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */ |
30d8080c | 44 | #ifndef __sun__ |
85023577 | 45 | #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */ |
c902c9a6 | 46 | #endif |
30d8080c | 47 | #endif |
fb952206 JR |
48 | #define _ALL_SOURCE 1 |
49 | #define _GNU_SOURCE 1 | |
50 | #define _BSD_SOURCE 1 | |
9a695fbf | 51 | #define _NETBSD_SOURCE 1 |
85023577 | 52 | |
4050c0df JH |
53 | #include <unistd.h> |
54 | #include <stdio.h> | |
55 | #include <sys/stat.h> | |
56 | #include <fcntl.h> | |
57 | #include <stddef.h> | |
58 | #include <stdlib.h> | |
59 | #include <stdarg.h> | |
60 | #include <string.h> | |
61 | #include <errno.h> | |
62 | #include <limits.h> | |
63 | #include <sys/param.h> | |
4050c0df JH |
64 | #include <sys/types.h> |
65 | #include <dirent.h> | |
85023577 JH |
66 | #include <sys/time.h> |
67 | #include <time.h> | |
68 | #include <signal.h> | |
85023577 | 69 | #include <fnmatch.h> |
f4626df5 JS |
70 | #include <assert.h> |
71 | #include <regex.h> | |
72 | #include <utime.h> | |
73 | #ifndef __MINGW32__ | |
74 | #include <sys/wait.h> | |
85023577 JH |
75 | #include <sys/poll.h> |
76 | #include <sys/socket.h> | |
80bbe72b | 77 | #include <sys/ioctl.h> |
2600973f | 78 | #ifndef NO_SYS_SELECT_H |
80bbe72b | 79 | #include <sys/select.h> |
2600973f | 80 | #endif |
85023577 JH |
81 | #include <netinet/in.h> |
82 | #include <netinet/tcp.h> | |
83 | #include <arpa/inet.h> | |
84 | #include <netdb.h> | |
85 | #include <pwd.h> | |
007e2ba6 | 86 | #include <inttypes.h> |
41b20017 RJ |
87 | #if defined(__CYGWIN__) |
88 | #undef _XOPEN_SOURCE | |
89 | #include <grp.h> | |
90 | #define _XOPEN_SOURCE 600 | |
adbc0b6b | 91 | #include "compat/cygwin.h" |
41b20017 | 92 | #else |
fb952206 | 93 | #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */ |
85023577 | 94 | #include <grp.h> |
fb952206 | 95 | #define _ALL_SOURCE 1 |
41b20017 | 96 | #endif |
f4626df5 JS |
97 | #else /* __MINGW32__ */ |
98 | /* pull in Windows compatibility stuff */ | |
99 | #include "compat/mingw.h" | |
100 | #endif /* __MINGW32__ */ | |
85023577 | 101 | |
e1c06886 DA |
102 | #ifndef NO_LIBGEN_H |
103 | #include <libgen.h> | |
104 | #else | |
105 | #define basename gitbasename | |
106 | extern char *gitbasename(char *); | |
107 | #endif | |
108 | ||
85023577 JH |
109 | #ifndef NO_ICONV |
110 | #include <iconv.h> | |
111 | #endif | |
4050c0df | 112 | |
684ec6c6 RS |
113 | #ifndef NO_OPENSSL |
114 | #include <openssl/ssl.h> | |
115 | #include <openssl/err.h> | |
116 | #endif | |
117 | ||
d0c2449f JH |
118 | /* On most systems <limits.h> would have given us this, but |
119 | * not on some systems (e.g. GNU/Hurd). | |
120 | */ | |
121 | #ifndef PATH_MAX | |
122 | #define PATH_MAX 4096 | |
123 | #endif | |
124 | ||
c4001d92 SP |
125 | #ifndef PRIuMAX |
126 | #define PRIuMAX "llu" | |
127 | #endif | |
128 | ||
607bb3ff JS |
129 | #ifndef PRIu32 |
130 | #define PRIu32 "u" | |
131 | #endif | |
132 | ||
133 | #ifndef PRIx32 | |
134 | #define PRIx32 "x" | |
135 | #endif | |
136 | ||
80ba074f JS |
137 | #ifndef PATH_SEP |
138 | #define PATH_SEP ':' | |
139 | #endif | |
140 | ||
23326d14 JS |
141 | #ifndef STRIP_EXTENSION |
142 | #define STRIP_EXTENSION "" | |
143 | #endif | |
144 | ||
25fe217b JS |
145 | #ifndef has_dos_drive_prefix |
146 | #define has_dos_drive_prefix(path) 0 | |
147 | #endif | |
148 | ||
149 | #ifndef is_dir_sep | |
150 | #define is_dir_sep(c) ((c) == '/') | |
151 | #endif | |
152 | ||
4050c0df JH |
153 | #ifdef __GNUC__ |
154 | #define NORETURN __attribute__((__noreturn__)) | |
155 | #else | |
156 | #define NORETURN | |
157 | #ifndef __attribute__ | |
158 | #define __attribute__(x) | |
159 | #endif | |
160 | #endif | |
161 | ||
162 | /* General helper functions */ | |
163 | extern void usage(const char *err) NORETURN; | |
164 | extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); | |
165 | extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
46efd2d9 | 166 | extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); |
4050c0df | 167 | |
39a3f5ea | 168 | extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); |
39a3f5ea | 169 | |
698a68be | 170 | extern int prefixcmp(const char *str, const char *prefix); |
bb5799d6 | 171 | extern time_t tm_to_time_t(const struct tm *tm); |
698a68be | 172 | |
fbca5837 MV |
173 | static inline const char *skip_prefix(const char *str, const char *prefix) |
174 | { | |
175 | size_t len = strlen(prefix); | |
176 | return strncmp(str, prefix, len) ? NULL : str + len; | |
177 | } | |
178 | ||
b130a72b | 179 | #if defined(NO_MMAP) || defined(USE_WIN32_MMAP) |
4050c0df JH |
180 | |
181 | #ifndef PROT_READ | |
182 | #define PROT_READ 1 | |
183 | #define PROT_WRITE 2 | |
184 | #define MAP_PRIVATE 1 | |
185 | #define MAP_FAILED ((void*)-1) | |
186 | #endif | |
187 | ||
d6779124 SP |
188 | #define mmap git_mmap |
189 | #define munmap git_munmap | |
190 | extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
191 | extern int git_munmap(void *start, size_t length); | |
4050c0df | 192 | |
b130a72b JL |
193 | #else /* NO_MMAP || USE_WIN32_MMAP */ |
194 | ||
195 | #include <sys/mman.h> | |
196 | ||
197 | #endif /* NO_MMAP || USE_WIN32_MMAP */ | |
198 | ||
199 | #ifdef NO_MMAP | |
200 | ||
5faaf246 | 201 | /* This value must be multiple of (pagesize * 2) */ |
8c82534d SP |
202 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) |
203 | ||
4050c0df JH |
204 | #else /* NO_MMAP */ |
205 | ||
5faaf246 | 206 | /* This value must be multiple of (pagesize * 2) */ |
22bac0ea SP |
207 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ |
208 | (sizeof(void*) >= 8 \ | |
209 | ? 1 * 1024 * 1024 * 1024 \ | |
210 | : 32 * 1024 * 1024) | |
4050c0df JH |
211 | |
212 | #endif /* NO_MMAP */ | |
213 | ||
fdb2a2a6 JH |
214 | #ifdef NO_ST_BLOCKS_IN_STRUCT_STAT |
215 | #define on_disk_bytes(st) ((st).st_size) | |
216 | #else | |
217 | #define on_disk_bytes(st) ((st).st_blocks * 512) | |
218 | #endif | |
219 | ||
22bac0ea | 220 | #define DEFAULT_PACKED_GIT_LIMIT \ |
ecaebf4a | 221 | ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) |
8c82534d | 222 | |
6900679c SH |
223 | #ifdef NO_PREAD |
224 | #define pread git_pread | |
225 | extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); | |
226 | #endif | |
14086b0a SP |
227 | /* |
228 | * Forward decl that will remind us if its twin in cache.h changes. | |
229 | * This function is used in compat/pread.c. But we can't include | |
230 | * cache.h there. | |
231 | */ | |
232 | extern ssize_t read_in_full(int fd, void *buf, size_t count); | |
6900679c | 233 | |
4050c0df JH |
234 | #ifdef NO_SETENV |
235 | #define setenv gitsetenv | |
236 | extern int gitsetenv(const char *, const char *, int); | |
237 | #endif | |
238 | ||
ca5bb5d5 SP |
239 | #ifdef NO_MKDTEMP |
240 | #define mkdtemp gitmkdtemp | |
241 | extern char *gitmkdtemp(char *); | |
242 | #endif | |
243 | ||
0620b39b DA |
244 | #ifdef NO_MKSTEMPS |
245 | #define mkstemps gitmkstemps | |
246 | extern int gitmkstemps(char *, int); | |
247 | #endif | |
248 | ||
731043fd JR |
249 | #ifdef NO_UNSETENV |
250 | #define unsetenv gitunsetenv | |
251 | extern void gitunsetenv(const char *); | |
252 | #endif | |
253 | ||
4050c0df JH |
254 | #ifdef NO_STRCASESTR |
255 | #define strcasestr gitstrcasestr | |
256 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
257 | #endif | |
258 | ||
817151e6 PE |
259 | #ifdef NO_STRLCPY |
260 | #define strlcpy gitstrlcpy | |
261 | extern size_t gitstrlcpy(char *, const char *, size_t); | |
262 | #endif | |
263 | ||
bc6b4f52 JR |
264 | #ifdef NO_STRTOUMAX |
265 | #define strtoumax gitstrtoumax | |
266 | extern uintmax_t gitstrtoumax(const char *, char **, int); | |
267 | #endif | |
268 | ||
fa0c87c3 AR |
269 | #ifdef NO_HSTRERROR |
270 | #define hstrerror githstrerror | |
271 | extern const char *githstrerror(int herror); | |
272 | #endif | |
273 | ||
b21b9f1d RS |
274 | #ifdef NO_MEMMEM |
275 | #define memmem gitmemmem | |
276 | void *gitmemmem(const void *haystack, size_t haystacklen, | |
277 | const void *needle, size_t needlelen); | |
278 | #endif | |
279 | ||
cba22528 | 280 | #ifdef FREAD_READS_DIRECTORIES |
c5445fe0 JS |
281 | #ifdef fopen |
282 | #undef fopen | |
283 | #endif | |
cba22528 BC |
284 | #define fopen(a,b) git_fopen(a,b) |
285 | extern FILE *git_fopen(const char*, const char*); | |
286 | #endif | |
287 | ||
c4582f93 MR |
288 | #ifdef SNPRINTF_RETURNS_BOGUS |
289 | #define snprintf git_snprintf | |
290 | extern int git_snprintf(char *str, size_t maxsize, | |
291 | const char *format, ...); | |
292 | #define vsnprintf git_vsnprintf | |
293 | extern int git_vsnprintf(char *str, size_t maxsize, | |
294 | const char *format, va_list ap); | |
295 | #endif | |
296 | ||
726c8ef5 JS |
297 | #ifdef __GLIBC_PREREQ |
298 | #if __GLIBC_PREREQ(2, 1) | |
299 | #define HAVE_STRCHRNUL | |
300 | #endif | |
301 | #endif | |
302 | ||
303 | #ifndef HAVE_STRCHRNUL | |
659c69cf | 304 | #define strchrnul gitstrchrnul |
9e79f00f AE |
305 | static inline char *gitstrchrnul(const char *s, int c) |
306 | { | |
307 | while (*s && *s != c) | |
308 | s++; | |
309 | return (char *)s; | |
310 | } | |
659c69cf RS |
311 | #endif |
312 | ||
d1efefa4 | 313 | extern void release_pack_memory(size_t, int); |
97bfeb34 | 314 | |
112db553 LT |
315 | extern char *xstrdup(const char *str); |
316 | extern void *xmalloc(size_t size); | |
317 | extern void *xmemdupz(const void *data, size_t len); | |
318 | extern char *xstrndup(const char *str, size_t len); | |
319 | extern void *xrealloc(void *ptr, size_t size); | |
320 | extern void *xcalloc(size_t nmemb, size_t size); | |
321 | extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
322 | extern ssize_t xread(int fd, void *buf, size_t len); | |
323 | extern ssize_t xwrite(int fd, const void *buf, size_t len); | |
324 | extern int xdup(int fd); | |
325 | extern FILE *xfdopen(int fd, const char *mode); | |
326 | extern int xmkstemp(char *template); | |
6e180cdc JH |
327 | extern int odb_mkstemp(char *template, size_t limit, const char *pattern); |
328 | extern int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1); | |
f21a47b2 | 329 | |
dc49cd76 SP |
330 | static inline size_t xsize_t(off_t len) |
331 | { | |
332 | return (size_t)len; | |
333 | } | |
334 | ||
5bb1cda5 | 335 | static inline int has_extension(const char *filename, const char *ext) |
83a2b841 | 336 | { |
5bb1cda5 RS |
337 | size_t len = strlen(filename); |
338 | size_t extlen = strlen(ext); | |
83a2b841 RS |
339 | return len > extlen && !memcmp(filename + len - extlen, ext, extlen); |
340 | } | |
341 | ||
4050c0df | 342 | /* Sane ctype - no locale, and works with signed chars */ |
c2e9364a | 343 | #undef isascii |
4050c0df JH |
344 | #undef isspace |
345 | #undef isdigit | |
346 | #undef isalpha | |
347 | #undef isalnum | |
348 | #undef tolower | |
349 | #undef toupper | |
350 | extern unsigned char sane_ctype[256]; | |
351 | #define GIT_SPACE 0x01 | |
352 | #define GIT_DIGIT 0x02 | |
353 | #define GIT_ALPHA 0x04 | |
8cc32992 | 354 | #define GIT_GLOB_SPECIAL 0x08 |
f9b7cce6 | 355 | #define GIT_REGEX_SPECIAL 0x10 |
4050c0df | 356 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) |
c2e9364a | 357 | #define isascii(x) (((x) & ~0x7f) == 0) |
4050c0df JH |
358 | #define isspace(x) sane_istest(x,GIT_SPACE) |
359 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
360 | #define isalpha(x) sane_istest(x,GIT_ALPHA) | |
361 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
8cc32992 | 362 | #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL) |
f9b7cce6 | 363 | #define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL) |
4050c0df JH |
364 | #define tolower(x) sane_case((unsigned char)(x), 0x20) |
365 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
366 | ||
367 | static inline int sane_case(int x, int high) | |
368 | { | |
369 | if (sane_istest(x, GIT_ALPHA)) | |
370 | x = (x & ~0x20) | high; | |
371 | return x; | |
372 | } | |
373 | ||
6aead43d JM |
374 | static inline int strtoul_ui(char const *s, int base, unsigned int *result) |
375 | { | |
376 | unsigned long ul; | |
377 | char *p; | |
378 | ||
379 | errno = 0; | |
380 | ul = strtoul(s, &p, base); | |
381 | if (errno || *p || p == s || (unsigned int) ul != ul) | |
382 | return -1; | |
383 | *result = ul; | |
384 | return 0; | |
385 | } | |
386 | ||
7791ecbc JH |
387 | static inline int strtol_i(char const *s, int base, int *result) |
388 | { | |
389 | long ul; | |
390 | char *p; | |
391 | ||
392 | errno = 0; | |
393 | ul = strtol(s, &p, base); | |
394 | if (errno || *p || p == s || (int) ul != ul) | |
395 | return -1; | |
396 | *result = ul; | |
397 | return 0; | |
398 | } | |
399 | ||
43fe901b BD |
400 | #ifdef INTERNAL_QSORT |
401 | void git_qsort(void *base, size_t nmemb, size_t size, | |
402 | int(*compar)(const void *, const void *)); | |
403 | #define qsort git_qsort | |
404 | #endif | |
405 | ||
81a24b52 AR |
406 | #ifndef DIR_HAS_BSD_GROUP_SEMANTICS |
407 | # define FORCE_DIR_SET_GID S_ISGID | |
408 | #else | |
409 | # define FORCE_DIR_SET_GID 0 | |
410 | #endif | |
411 | ||
c06ff490 KB |
412 | #ifdef NO_NSEC |
413 | #undef USE_NSEC | |
414 | #define ST_CTIME_NSEC(st) 0 | |
415 | #define ST_MTIME_NSEC(st) 0 | |
416 | #else | |
c567383b BG |
417 | #ifdef USE_ST_TIMESPEC |
418 | #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec)) | |
419 | #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec)) | |
420 | #else | |
c06ff490 KB |
421 | #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec)) |
422 | #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec)) | |
423 | #endif | |
c567383b | 424 | #endif |
c06ff490 | 425 | |
34779c53 JS |
426 | #ifdef UNRELIABLE_FSTAT |
427 | #define fstat_is_reliable() 0 | |
428 | #else | |
429 | #define fstat_is_reliable() 1 | |
430 | #endif | |
431 | ||
fc71db39 AR |
432 | /* |
433 | * Preserves errno, prints a message, but gives no warning for ENOENT. | |
434 | * Always returns the return value of unlink(2). | |
435 | */ | |
436 | int unlink_or_warn(const char *path); | |
437 | ||
4050c0df | 438 | #endif |