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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 | ||
95ca1c6c | 42 | #if !defined(__APPLE__) && !defined(__FreeBSD__) |
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> | |
66 | #include <sys/wait.h> | |
67 | #include <fnmatch.h> | |
68 | #include <sys/poll.h> | |
69 | #include <sys/socket.h> | |
80bbe72b | 70 | #include <sys/ioctl.h> |
f746bae8 | 71 | #include <utime.h> |
2600973f | 72 | #ifndef NO_SYS_SELECT_H |
80bbe72b | 73 | #include <sys/select.h> |
2600973f | 74 | #endif |
85023577 JH |
75 | #include <assert.h> |
76 | #include <regex.h> | |
77 | #include <netinet/in.h> | |
78 | #include <netinet/tcp.h> | |
79 | #include <arpa/inet.h> | |
80 | #include <netdb.h> | |
81 | #include <pwd.h> | |
007e2ba6 | 82 | #include <inttypes.h> |
41b20017 RJ |
83 | #if defined(__CYGWIN__) |
84 | #undef _XOPEN_SOURCE | |
85 | #include <grp.h> | |
86 | #define _XOPEN_SOURCE 600 | |
87 | #else | |
fb952206 | 88 | #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */ |
85023577 | 89 | #include <grp.h> |
fb952206 | 90 | #define _ALL_SOURCE 1 |
41b20017 | 91 | #endif |
85023577 JH |
92 | |
93 | #ifndef NO_ICONV | |
94 | #include <iconv.h> | |
95 | #endif | |
4050c0df | 96 | |
d0c2449f JH |
97 | /* On most systems <limits.h> would have given us this, but |
98 | * not on some systems (e.g. GNU/Hurd). | |
99 | */ | |
100 | #ifndef PATH_MAX | |
101 | #define PATH_MAX 4096 | |
102 | #endif | |
103 | ||
c4001d92 SP |
104 | #ifndef PRIuMAX |
105 | #define PRIuMAX "llu" | |
106 | #endif | |
107 | ||
4050c0df JH |
108 | #ifdef __GNUC__ |
109 | #define NORETURN __attribute__((__noreturn__)) | |
110 | #else | |
111 | #define NORETURN | |
112 | #ifndef __attribute__ | |
113 | #define __attribute__(x) | |
114 | #endif | |
115 | #endif | |
116 | ||
117 | /* General helper functions */ | |
118 | extern void usage(const char *err) NORETURN; | |
119 | extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); | |
120 | extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
46efd2d9 | 121 | extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); |
4050c0df | 122 | |
39a3f5ea PB |
123 | extern void set_usage_routine(void (*routine)(const char *err) NORETURN); |
124 | extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); | |
125 | extern void set_error_routine(void (*routine)(const char *err, va_list params)); | |
fa39b6b5 | 126 | extern void set_warn_routine(void (*routine)(const char *warn, va_list params)); |
39a3f5ea | 127 | |
698a68be JH |
128 | extern int prefixcmp(const char *str, const char *prefix); |
129 | ||
4050c0df JH |
130 | #ifdef NO_MMAP |
131 | ||
132 | #ifndef PROT_READ | |
133 | #define PROT_READ 1 | |
134 | #define PROT_WRITE 2 | |
135 | #define MAP_PRIVATE 1 | |
136 | #define MAP_FAILED ((void*)-1) | |
137 | #endif | |
138 | ||
d6779124 SP |
139 | #define mmap git_mmap |
140 | #define munmap git_munmap | |
141 | extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
142 | extern int git_munmap(void *start, size_t length); | |
4050c0df | 143 | |
5faaf246 | 144 | /* This value must be multiple of (pagesize * 2) */ |
8c82534d SP |
145 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) |
146 | ||
4050c0df JH |
147 | #else /* NO_MMAP */ |
148 | ||
149 | #include <sys/mman.h> | |
5faaf246 JH |
150 | |
151 | /* This value must be multiple of (pagesize * 2) */ | |
22bac0ea SP |
152 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ |
153 | (sizeof(void*) >= 8 \ | |
154 | ? 1 * 1024 * 1024 * 1024 \ | |
155 | : 32 * 1024 * 1024) | |
4050c0df JH |
156 | |
157 | #endif /* NO_MMAP */ | |
158 | ||
22bac0ea | 159 | #define DEFAULT_PACKED_GIT_LIMIT \ |
ecaebf4a | 160 | ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) |
8c82534d | 161 | |
6900679c SH |
162 | #ifdef NO_PREAD |
163 | #define pread git_pread | |
164 | extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); | |
165 | #endif | |
166 | ||
4050c0df JH |
167 | #ifdef NO_SETENV |
168 | #define setenv gitsetenv | |
169 | extern int gitsetenv(const char *, const char *, int); | |
170 | #endif | |
171 | ||
ca5bb5d5 SP |
172 | #ifdef NO_MKDTEMP |
173 | #define mkdtemp gitmkdtemp | |
174 | extern char *gitmkdtemp(char *); | |
175 | #endif | |
176 | ||
731043fd JR |
177 | #ifdef NO_UNSETENV |
178 | #define unsetenv gitunsetenv | |
179 | extern void gitunsetenv(const char *); | |
180 | #endif | |
181 | ||
4050c0df JH |
182 | #ifdef NO_STRCASESTR |
183 | #define strcasestr gitstrcasestr | |
184 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
185 | #endif | |
186 | ||
817151e6 PE |
187 | #ifdef NO_STRLCPY |
188 | #define strlcpy gitstrlcpy | |
189 | extern size_t gitstrlcpy(char *, const char *, size_t); | |
190 | #endif | |
191 | ||
bc6b4f52 JR |
192 | #ifdef NO_STRTOUMAX |
193 | #define strtoumax gitstrtoumax | |
194 | extern uintmax_t gitstrtoumax(const char *, char **, int); | |
195 | #endif | |
196 | ||
fa0c87c3 AR |
197 | #ifdef NO_HSTRERROR |
198 | #define hstrerror githstrerror | |
199 | extern const char *githstrerror(int herror); | |
200 | #endif | |
201 | ||
b21b9f1d RS |
202 | #ifdef NO_MEMMEM |
203 | #define memmem gitmemmem | |
204 | void *gitmemmem(const void *haystack, size_t haystacklen, | |
205 | const void *needle, size_t needlelen); | |
206 | #endif | |
207 | ||
cba22528 BC |
208 | #ifdef FREAD_READS_DIRECTORIES |
209 | #define fopen(a,b) git_fopen(a,b) | |
210 | extern FILE *git_fopen(const char*, const char*); | |
211 | #endif | |
212 | ||
c4582f93 MR |
213 | #ifdef SNPRINTF_RETURNS_BOGUS |
214 | #define snprintf git_snprintf | |
215 | extern int git_snprintf(char *str, size_t maxsize, | |
216 | const char *format, ...); | |
217 | #define vsnprintf git_vsnprintf | |
218 | extern int git_vsnprintf(char *str, size_t maxsize, | |
219 | const char *format, va_list ap); | |
220 | #endif | |
221 | ||
726c8ef5 JS |
222 | #ifdef __GLIBC_PREREQ |
223 | #if __GLIBC_PREREQ(2, 1) | |
224 | #define HAVE_STRCHRNUL | |
225 | #endif | |
226 | #endif | |
227 | ||
228 | #ifndef HAVE_STRCHRNUL | |
659c69cf | 229 | #define strchrnul gitstrchrnul |
9e79f00f AE |
230 | static inline char *gitstrchrnul(const char *s, int c) |
231 | { | |
232 | while (*s && *s != c) | |
233 | s++; | |
234 | return (char *)s; | |
235 | } | |
659c69cf RS |
236 | #endif |
237 | ||
d1efefa4 | 238 | extern void release_pack_memory(size_t, int); |
97bfeb34 | 239 | |
9befac47 SP |
240 | static inline char* xstrdup(const char *str) |
241 | { | |
242 | char *ret = strdup(str); | |
97bfeb34 | 243 | if (!ret) { |
d1efefa4 | 244 | release_pack_memory(strlen(str) + 1, -1); |
97bfeb34 SP |
245 | ret = strdup(str); |
246 | if (!ret) | |
247 | die("Out of memory, strdup failed"); | |
248 | } | |
9befac47 SP |
249 | return ret; |
250 | } | |
251 | ||
4050c0df JH |
252 | static inline void *xmalloc(size_t size) |
253 | { | |
254 | void *ret = malloc(size); | |
4e7a2ecc JH |
255 | if (!ret && !size) |
256 | ret = malloc(1); | |
97bfeb34 | 257 | if (!ret) { |
d1efefa4 | 258 | release_pack_memory(size, -1); |
97bfeb34 SP |
259 | ret = malloc(size); |
260 | if (!ret && !size) | |
261 | ret = malloc(1); | |
262 | if (!ret) | |
263 | die("Out of memory, malloc failed"); | |
264 | } | |
aa5481c1 JH |
265 | #ifdef XMALLOC_POISON |
266 | memset(ret, 0xA5, size); | |
267 | #endif | |
4050c0df JH |
268 | return ret; |
269 | } | |
270 | ||
68d3025a | 271 | static inline void *xmemdupz(const void *data, size_t len) |
5094102e | 272 | { |
68d3025a PH |
273 | char *p = xmalloc(len + 1); |
274 | memcpy(p, data, len); | |
5094102e DB |
275 | p[len] = '\0'; |
276 | return p; | |
277 | } | |
278 | ||
68d3025a PH |
279 | static inline char *xstrndup(const char *str, size_t len) |
280 | { | |
281 | char *p = memchr(str, '\0', len); | |
282 | return xmemdupz(str, p ? p - str : len); | |
283 | } | |
284 | ||
4050c0df JH |
285 | static inline void *xrealloc(void *ptr, size_t size) |
286 | { | |
287 | void *ret = realloc(ptr, size); | |
4e7a2ecc JH |
288 | if (!ret && !size) |
289 | ret = realloc(ptr, 1); | |
97bfeb34 | 290 | if (!ret) { |
d1efefa4 | 291 | release_pack_memory(size, -1); |
97bfeb34 SP |
292 | ret = realloc(ptr, size); |
293 | if (!ret && !size) | |
294 | ret = realloc(ptr, 1); | |
295 | if (!ret) | |
296 | die("Out of memory, realloc failed"); | |
297 | } | |
4050c0df JH |
298 | return ret; |
299 | } | |
300 | ||
301 | static inline void *xcalloc(size_t nmemb, size_t size) | |
302 | { | |
303 | void *ret = calloc(nmemb, size); | |
4e7a2ecc JH |
304 | if (!ret && (!nmemb || !size)) |
305 | ret = calloc(1, 1); | |
97bfeb34 | 306 | if (!ret) { |
d1efefa4 | 307 | release_pack_memory(nmemb * size, -1); |
97bfeb34 SP |
308 | ret = calloc(nmemb, size); |
309 | if (!ret && (!nmemb || !size)) | |
310 | ret = calloc(1, 1); | |
311 | if (!ret) | |
312 | die("Out of memory, calloc failed"); | |
313 | } | |
4050c0df JH |
314 | return ret; |
315 | } | |
316 | ||
c4712e45 SP |
317 | static inline void *xmmap(void *start, size_t length, |
318 | int prot, int flags, int fd, off_t offset) | |
319 | { | |
320 | void *ret = mmap(start, length, prot, flags, fd, offset); | |
321 | if (ret == MAP_FAILED) { | |
9130ac1e LT |
322 | if (!length) |
323 | return NULL; | |
d1efefa4 | 324 | release_pack_memory(length, fd); |
c4712e45 SP |
325 | ret = mmap(start, length, prot, flags, fd, offset); |
326 | if (ret == MAP_FAILED) | |
327 | die("Out of memory? mmap failed: %s", strerror(errno)); | |
328 | } | |
329 | return ret; | |
330 | } | |
331 | ||
1c15afb9 JH |
332 | static inline ssize_t xread(int fd, void *buf, size_t len) |
333 | { | |
334 | ssize_t nr; | |
335 | while (1) { | |
336 | nr = read(fd, buf, len); | |
337 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
338 | continue; | |
339 | return nr; | |
340 | } | |
341 | } | |
342 | ||
343 | static inline ssize_t xwrite(int fd, const void *buf, size_t len) | |
344 | { | |
345 | ssize_t nr; | |
346 | while (1) { | |
347 | nr = write(fd, buf, len); | |
348 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
349 | continue; | |
350 | return nr; | |
351 | } | |
352 | } | |
353 | ||
f5788250 JM |
354 | static inline int xdup(int fd) |
355 | { | |
356 | int ret = dup(fd); | |
357 | if (ret < 0) | |
358 | die("dup failed: %s", strerror(errno)); | |
359 | return ret; | |
360 | } | |
361 | ||
362 | static inline FILE *xfdopen(int fd, const char *mode) | |
363 | { | |
364 | FILE *stream = fdopen(fd, mode); | |
365 | if (stream == NULL) | |
366 | die("Out of memory? fdopen failed: %s", strerror(errno)); | |
367 | return stream; | |
368 | } | |
369 | ||
f21a47b2 LFC |
370 | static inline int xmkstemp(char *template) |
371 | { | |
372 | int fd; | |
373 | ||
374 | fd = mkstemp(template); | |
375 | if (fd < 0) | |
376 | die("Unable to create temporary file: %s", strerror(errno)); | |
377 | return fd; | |
378 | } | |
379 | ||
dc49cd76 SP |
380 | static inline size_t xsize_t(off_t len) |
381 | { | |
382 | return (size_t)len; | |
383 | } | |
384 | ||
5bb1cda5 | 385 | static inline int has_extension(const char *filename, const char *ext) |
83a2b841 | 386 | { |
5bb1cda5 RS |
387 | size_t len = strlen(filename); |
388 | size_t extlen = strlen(ext); | |
83a2b841 RS |
389 | return len > extlen && !memcmp(filename + len - extlen, ext, extlen); |
390 | } | |
391 | ||
4050c0df JH |
392 | /* Sane ctype - no locale, and works with signed chars */ |
393 | #undef isspace | |
394 | #undef isdigit | |
395 | #undef isalpha | |
396 | #undef isalnum | |
397 | #undef tolower | |
398 | #undef toupper | |
399 | extern unsigned char sane_ctype[256]; | |
400 | #define GIT_SPACE 0x01 | |
401 | #define GIT_DIGIT 0x02 | |
402 | #define GIT_ALPHA 0x04 | |
403 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) | |
404 | #define isspace(x) sane_istest(x,GIT_SPACE) | |
405 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
406 | #define isalpha(x) sane_istest(x,GIT_ALPHA) | |
407 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
408 | #define tolower(x) sane_case((unsigned char)(x), 0x20) | |
409 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
410 | ||
411 | static inline int sane_case(int x, int high) | |
412 | { | |
413 | if (sane_istest(x, GIT_ALPHA)) | |
414 | x = (x & ~0x20) | high; | |
415 | return x; | |
416 | } | |
417 | ||
6aead43d JM |
418 | static inline int strtoul_ui(char const *s, int base, unsigned int *result) |
419 | { | |
420 | unsigned long ul; | |
421 | char *p; | |
422 | ||
423 | errno = 0; | |
424 | ul = strtoul(s, &p, base); | |
425 | if (errno || *p || p == s || (unsigned int) ul != ul) | |
426 | return -1; | |
427 | *result = ul; | |
428 | return 0; | |
429 | } | |
430 | ||
7791ecbc JH |
431 | static inline int strtol_i(char const *s, int base, int *result) |
432 | { | |
433 | long ul; | |
434 | char *p; | |
435 | ||
436 | errno = 0; | |
437 | ul = strtol(s, &p, base); | |
438 | if (errno || *p || p == s || (int) ul != ul) | |
439 | return -1; | |
440 | *result = ul; | |
441 | return 0; | |
442 | } | |
443 | ||
43fe901b BD |
444 | #ifdef INTERNAL_QSORT |
445 | void git_qsort(void *base, size_t nmemb, size_t size, | |
446 | int(*compar)(const void *, const void *)); | |
447 | #define qsort git_qsort | |
448 | #endif | |
449 | ||
81a24b52 AR |
450 | #ifndef DIR_HAS_BSD_GROUP_SEMANTICS |
451 | # define FORCE_DIR_SET_GID S_ISGID | |
452 | #else | |
453 | # define FORCE_DIR_SET_GID 0 | |
454 | #endif | |
455 | ||
4050c0df | 456 | #endif |