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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 JH |
6 | #ifndef FLEX_ARRAY |
7 | #if defined(__GNUC__) && (__GNUC__ < 3) | |
8 | #define FLEX_ARRAY 0 | |
9 | #else | |
10 | #define FLEX_ARRAY /* empty */ | |
11 | #endif | |
12 | #endif | |
13 | ||
b4f2a6ac JH |
14 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
15 | ||
95ca1c6c | 16 | #if !defined(__APPLE__) && !defined(__FreeBSD__) |
85023577 JH |
17 | #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */ |
18 | #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */ | |
c902c9a6 | 19 | #endif |
fb952206 JR |
20 | #define _ALL_SOURCE 1 |
21 | #define _GNU_SOURCE 1 | |
22 | #define _BSD_SOURCE 1 | |
85023577 | 23 | |
4050c0df JH |
24 | #include <unistd.h> |
25 | #include <stdio.h> | |
26 | #include <sys/stat.h> | |
27 | #include <fcntl.h> | |
28 | #include <stddef.h> | |
29 | #include <stdlib.h> | |
30 | #include <stdarg.h> | |
31 | #include <string.h> | |
32 | #include <errno.h> | |
33 | #include <limits.h> | |
34 | #include <sys/param.h> | |
4050c0df JH |
35 | #include <sys/types.h> |
36 | #include <dirent.h> | |
85023577 JH |
37 | #include <sys/time.h> |
38 | #include <time.h> | |
39 | #include <signal.h> | |
40 | #include <sys/wait.h> | |
41 | #include <fnmatch.h> | |
42 | #include <sys/poll.h> | |
43 | #include <sys/socket.h> | |
44 | #include <assert.h> | |
45 | #include <regex.h> | |
46 | #include <netinet/in.h> | |
47 | #include <netinet/tcp.h> | |
48 | #include <arpa/inet.h> | |
49 | #include <netdb.h> | |
50 | #include <pwd.h> | |
007e2ba6 | 51 | #include <inttypes.h> |
41b20017 RJ |
52 | #if defined(__CYGWIN__) |
53 | #undef _XOPEN_SOURCE | |
54 | #include <grp.h> | |
55 | #define _XOPEN_SOURCE 600 | |
56 | #else | |
fb952206 | 57 | #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */ |
85023577 | 58 | #include <grp.h> |
fb952206 | 59 | #define _ALL_SOURCE 1 |
41b20017 | 60 | #endif |
85023577 JH |
61 | |
62 | #ifndef NO_ICONV | |
63 | #include <iconv.h> | |
64 | #endif | |
4050c0df | 65 | |
d0c2449f JH |
66 | /* On most systems <limits.h> would have given us this, but |
67 | * not on some systems (e.g. GNU/Hurd). | |
68 | */ | |
69 | #ifndef PATH_MAX | |
70 | #define PATH_MAX 4096 | |
71 | #endif | |
72 | ||
c4001d92 SP |
73 | #ifndef PRIuMAX |
74 | #define PRIuMAX "llu" | |
75 | #endif | |
76 | ||
4050c0df JH |
77 | #ifdef __GNUC__ |
78 | #define NORETURN __attribute__((__noreturn__)) | |
79 | #else | |
80 | #define NORETURN | |
81 | #ifndef __attribute__ | |
82 | #define __attribute__(x) | |
83 | #endif | |
84 | #endif | |
85 | ||
86 | /* General helper functions */ | |
87 | extern void usage(const char *err) NORETURN; | |
88 | extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); | |
89 | extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
46efd2d9 | 90 | extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); |
4050c0df | 91 | |
39a3f5ea PB |
92 | extern void set_usage_routine(void (*routine)(const char *err) NORETURN); |
93 | extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); | |
94 | extern void set_error_routine(void (*routine)(const char *err, va_list params)); | |
fa39b6b5 | 95 | extern void set_warn_routine(void (*routine)(const char *warn, va_list params)); |
39a3f5ea | 96 | |
4050c0df JH |
97 | #ifdef NO_MMAP |
98 | ||
99 | #ifndef PROT_READ | |
100 | #define PROT_READ 1 | |
101 | #define PROT_WRITE 2 | |
102 | #define MAP_PRIVATE 1 | |
103 | #define MAP_FAILED ((void*)-1) | |
104 | #endif | |
105 | ||
d6779124 SP |
106 | #define mmap git_mmap |
107 | #define munmap git_munmap | |
108 | extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
109 | extern int git_munmap(void *start, size_t length); | |
4050c0df | 110 | |
5faaf246 | 111 | /* This value must be multiple of (pagesize * 2) */ |
8c82534d SP |
112 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) |
113 | ||
4050c0df JH |
114 | #else /* NO_MMAP */ |
115 | ||
116 | #include <sys/mman.h> | |
5faaf246 JH |
117 | |
118 | /* This value must be multiple of (pagesize * 2) */ | |
22bac0ea SP |
119 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ |
120 | (sizeof(void*) >= 8 \ | |
121 | ? 1 * 1024 * 1024 * 1024 \ | |
122 | : 32 * 1024 * 1024) | |
4050c0df JH |
123 | |
124 | #endif /* NO_MMAP */ | |
125 | ||
22bac0ea | 126 | #define DEFAULT_PACKED_GIT_LIMIT \ |
ecaebf4a | 127 | ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) |
8c82534d | 128 | |
6900679c SH |
129 | #ifdef NO_PREAD |
130 | #define pread git_pread | |
131 | extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); | |
132 | #endif | |
133 | ||
4050c0df JH |
134 | #ifdef NO_SETENV |
135 | #define setenv gitsetenv | |
136 | extern int gitsetenv(const char *, const char *, int); | |
137 | #endif | |
138 | ||
731043fd JR |
139 | #ifdef NO_UNSETENV |
140 | #define unsetenv gitunsetenv | |
141 | extern void gitunsetenv(const char *); | |
142 | #endif | |
143 | ||
4050c0df JH |
144 | #ifdef NO_STRCASESTR |
145 | #define strcasestr gitstrcasestr | |
146 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
147 | #endif | |
148 | ||
817151e6 PE |
149 | #ifdef NO_STRLCPY |
150 | #define strlcpy gitstrlcpy | |
151 | extern size_t gitstrlcpy(char *, const char *, size_t); | |
152 | #endif | |
153 | ||
bc6b4f52 JR |
154 | #ifdef NO_STRTOUMAX |
155 | #define strtoumax gitstrtoumax | |
156 | extern uintmax_t gitstrtoumax(const char *, char **, int); | |
157 | #endif | |
158 | ||
97bfeb34 SP |
159 | extern void release_pack_memory(size_t); |
160 | ||
9befac47 SP |
161 | static inline char* xstrdup(const char *str) |
162 | { | |
163 | char *ret = strdup(str); | |
97bfeb34 SP |
164 | if (!ret) { |
165 | release_pack_memory(strlen(str) + 1); | |
166 | ret = strdup(str); | |
167 | if (!ret) | |
168 | die("Out of memory, strdup failed"); | |
169 | } | |
9befac47 SP |
170 | return ret; |
171 | } | |
172 | ||
4050c0df JH |
173 | static inline void *xmalloc(size_t size) |
174 | { | |
175 | void *ret = malloc(size); | |
4e7a2ecc JH |
176 | if (!ret && !size) |
177 | ret = malloc(1); | |
97bfeb34 SP |
178 | if (!ret) { |
179 | release_pack_memory(size); | |
180 | ret = malloc(size); | |
181 | if (!ret && !size) | |
182 | ret = malloc(1); | |
183 | if (!ret) | |
184 | die("Out of memory, malloc failed"); | |
185 | } | |
aa5481c1 JH |
186 | #ifdef XMALLOC_POISON |
187 | memset(ret, 0xA5, size); | |
188 | #endif | |
4050c0df JH |
189 | return ret; |
190 | } | |
191 | ||
192 | static inline void *xrealloc(void *ptr, size_t size) | |
193 | { | |
194 | void *ret = realloc(ptr, size); | |
4e7a2ecc JH |
195 | if (!ret && !size) |
196 | ret = realloc(ptr, 1); | |
97bfeb34 SP |
197 | if (!ret) { |
198 | release_pack_memory(size); | |
199 | ret = realloc(ptr, size); | |
200 | if (!ret && !size) | |
201 | ret = realloc(ptr, 1); | |
202 | if (!ret) | |
203 | die("Out of memory, realloc failed"); | |
204 | } | |
4050c0df JH |
205 | return ret; |
206 | } | |
207 | ||
208 | static inline void *xcalloc(size_t nmemb, size_t size) | |
209 | { | |
210 | void *ret = calloc(nmemb, size); | |
4e7a2ecc JH |
211 | if (!ret && (!nmemb || !size)) |
212 | ret = calloc(1, 1); | |
97bfeb34 SP |
213 | if (!ret) { |
214 | release_pack_memory(nmemb * size); | |
215 | ret = calloc(nmemb, size); | |
216 | if (!ret && (!nmemb || !size)) | |
217 | ret = calloc(1, 1); | |
218 | if (!ret) | |
219 | die("Out of memory, calloc failed"); | |
220 | } | |
4050c0df JH |
221 | return ret; |
222 | } | |
223 | ||
c4712e45 SP |
224 | static inline void *xmmap(void *start, size_t length, |
225 | int prot, int flags, int fd, off_t offset) | |
226 | { | |
227 | void *ret = mmap(start, length, prot, flags, fd, offset); | |
228 | if (ret == MAP_FAILED) { | |
9130ac1e LT |
229 | if (!length) |
230 | return NULL; | |
c4712e45 SP |
231 | release_pack_memory(length); |
232 | ret = mmap(start, length, prot, flags, fd, offset); | |
233 | if (ret == MAP_FAILED) | |
234 | die("Out of memory? mmap failed: %s", strerror(errno)); | |
235 | } | |
236 | return ret; | |
237 | } | |
238 | ||
1c15afb9 JH |
239 | static inline ssize_t xread(int fd, void *buf, size_t len) |
240 | { | |
241 | ssize_t nr; | |
242 | while (1) { | |
243 | nr = read(fd, buf, len); | |
244 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
245 | continue; | |
246 | return nr; | |
247 | } | |
248 | } | |
249 | ||
250 | static inline ssize_t xwrite(int fd, const void *buf, size_t len) | |
251 | { | |
252 | ssize_t nr; | |
253 | while (1) { | |
254 | nr = write(fd, buf, len); | |
255 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
256 | continue; | |
257 | return nr; | |
258 | } | |
259 | } | |
260 | ||
dc49cd76 SP |
261 | static inline size_t xsize_t(off_t len) |
262 | { | |
263 | return (size_t)len; | |
264 | } | |
265 | ||
5bb1cda5 | 266 | static inline int has_extension(const char *filename, const char *ext) |
83a2b841 | 267 | { |
5bb1cda5 RS |
268 | size_t len = strlen(filename); |
269 | size_t extlen = strlen(ext); | |
83a2b841 RS |
270 | return len > extlen && !memcmp(filename + len - extlen, ext, extlen); |
271 | } | |
272 | ||
4050c0df JH |
273 | /* Sane ctype - no locale, and works with signed chars */ |
274 | #undef isspace | |
275 | #undef isdigit | |
276 | #undef isalpha | |
277 | #undef isalnum | |
278 | #undef tolower | |
279 | #undef toupper | |
280 | extern unsigned char sane_ctype[256]; | |
281 | #define GIT_SPACE 0x01 | |
282 | #define GIT_DIGIT 0x02 | |
283 | #define GIT_ALPHA 0x04 | |
284 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) | |
285 | #define isspace(x) sane_istest(x,GIT_SPACE) | |
286 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
287 | #define isalpha(x) sane_istest(x,GIT_ALPHA) | |
288 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
289 | #define tolower(x) sane_case((unsigned char)(x), 0x20) | |
290 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
291 | ||
292 | static inline int sane_case(int x, int high) | |
293 | { | |
294 | if (sane_istest(x, GIT_ALPHA)) | |
295 | x = (x & ~0x20) | high; | |
296 | return x; | |
297 | } | |
298 | ||
cff0302c JH |
299 | static inline int prefixcmp(const char *str, const char *prefix) |
300 | { | |
301 | return strncmp(str, prefix, strlen(prefix)); | |
302 | } | |
303 | ||
4050c0df | 304 | #endif |