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