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4050c0df JH |
1 | #ifndef GIT_COMPAT_UTIL_H |
2 | #define GIT_COMPAT_UTIL_H | |
3 | ||
8f1d2e6f JH |
4 | #ifndef FLEX_ARRAY |
5 | #if defined(__GNUC__) && (__GNUC__ < 3) | |
6 | #define FLEX_ARRAY 0 | |
7 | #else | |
8 | #define FLEX_ARRAY /* empty */ | |
9 | #endif | |
10 | #endif | |
11 | ||
b4f2a6ac JH |
12 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
13 | ||
95ca1c6c | 14 | #if !defined(__APPLE__) && !defined(__FreeBSD__) |
85023577 JH |
15 | #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */ |
16 | #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */ | |
c902c9a6 | 17 | #endif |
fb952206 JR |
18 | #define _ALL_SOURCE 1 |
19 | #define _GNU_SOURCE 1 | |
20 | #define _BSD_SOURCE 1 | |
85023577 | 21 | |
4050c0df JH |
22 | #include <unistd.h> |
23 | #include <stdio.h> | |
24 | #include <sys/stat.h> | |
25 | #include <fcntl.h> | |
26 | #include <stddef.h> | |
27 | #include <stdlib.h> | |
28 | #include <stdarg.h> | |
29 | #include <string.h> | |
30 | #include <errno.h> | |
31 | #include <limits.h> | |
32 | #include <sys/param.h> | |
4050c0df JH |
33 | #include <sys/types.h> |
34 | #include <dirent.h> | |
85023577 JH |
35 | #include <sys/time.h> |
36 | #include <time.h> | |
37 | #include <signal.h> | |
38 | #include <sys/wait.h> | |
39 | #include <fnmatch.h> | |
40 | #include <sys/poll.h> | |
41 | #include <sys/socket.h> | |
42 | #include <assert.h> | |
43 | #include <regex.h> | |
44 | #include <netinet/in.h> | |
45 | #include <netinet/tcp.h> | |
46 | #include <arpa/inet.h> | |
47 | #include <netdb.h> | |
48 | #include <pwd.h> | |
007e2ba6 | 49 | #include <inttypes.h> |
fb952206 | 50 | #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */ |
85023577 | 51 | #include <grp.h> |
fb952206 | 52 | #define _ALL_SOURCE 1 |
85023577 JH |
53 | |
54 | #ifndef NO_ICONV | |
55 | #include <iconv.h> | |
56 | #endif | |
4050c0df | 57 | |
d0c2449f JH |
58 | /* On most systems <limits.h> would have given us this, but |
59 | * not on some systems (e.g. GNU/Hurd). | |
60 | */ | |
61 | #ifndef PATH_MAX | |
62 | #define PATH_MAX 4096 | |
63 | #endif | |
64 | ||
4050c0df JH |
65 | #ifdef __GNUC__ |
66 | #define NORETURN __attribute__((__noreturn__)) | |
67 | #else | |
68 | #define NORETURN | |
69 | #ifndef __attribute__ | |
70 | #define __attribute__(x) | |
71 | #endif | |
72 | #endif | |
73 | ||
74 | /* General helper functions */ | |
75 | extern void usage(const char *err) NORETURN; | |
76 | extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); | |
77 | extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
fa39b6b5 | 78 | extern void warn(const char *err, ...) __attribute__((format (printf, 1, 2))); |
4050c0df | 79 | |
39a3f5ea PB |
80 | extern void set_usage_routine(void (*routine)(const char *err) NORETURN); |
81 | extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); | |
82 | extern void set_error_routine(void (*routine)(const char *err, va_list params)); | |
fa39b6b5 | 83 | extern void set_warn_routine(void (*routine)(const char *warn, va_list params)); |
39a3f5ea | 84 | |
4050c0df JH |
85 | #ifdef NO_MMAP |
86 | ||
87 | #ifndef PROT_READ | |
88 | #define PROT_READ 1 | |
89 | #define PROT_WRITE 2 | |
90 | #define MAP_PRIVATE 1 | |
91 | #define MAP_FAILED ((void*)-1) | |
92 | #endif | |
93 | ||
d6779124 SP |
94 | #define mmap git_mmap |
95 | #define munmap git_munmap | |
96 | extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); | |
97 | extern int git_munmap(void *start, size_t length); | |
4050c0df | 98 | |
5faaf246 | 99 | /* This value must be multiple of (pagesize * 2) */ |
8c82534d SP |
100 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) |
101 | ||
4050c0df JH |
102 | #else /* NO_MMAP */ |
103 | ||
104 | #include <sys/mman.h> | |
5faaf246 JH |
105 | |
106 | /* This value must be multiple of (pagesize * 2) */ | |
22bac0ea SP |
107 | #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ |
108 | (sizeof(void*) >= 8 \ | |
109 | ? 1 * 1024 * 1024 * 1024 \ | |
110 | : 32 * 1024 * 1024) | |
4050c0df JH |
111 | |
112 | #endif /* NO_MMAP */ | |
113 | ||
22bac0ea | 114 | #define DEFAULT_PACKED_GIT_LIMIT \ |
ecaebf4a | 115 | ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) |
8c82534d | 116 | |
6900679c SH |
117 | #ifdef NO_PREAD |
118 | #define pread git_pread | |
119 | extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); | |
120 | #endif | |
121 | ||
4050c0df JH |
122 | #ifdef NO_SETENV |
123 | #define setenv gitsetenv | |
124 | extern int gitsetenv(const char *, const char *, int); | |
125 | #endif | |
126 | ||
731043fd JR |
127 | #ifdef NO_UNSETENV |
128 | #define unsetenv gitunsetenv | |
129 | extern void gitunsetenv(const char *); | |
130 | #endif | |
131 | ||
4050c0df JH |
132 | #ifdef NO_STRCASESTR |
133 | #define strcasestr gitstrcasestr | |
134 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
135 | #endif | |
136 | ||
817151e6 PE |
137 | #ifdef NO_STRLCPY |
138 | #define strlcpy gitstrlcpy | |
139 | extern size_t gitstrlcpy(char *, const char *, size_t); | |
140 | #endif | |
141 | ||
bc6b4f52 JR |
142 | #ifdef NO_STRTOUMAX |
143 | #define strtoumax gitstrtoumax | |
144 | extern uintmax_t gitstrtoumax(const char *, char **, int); | |
145 | #endif | |
146 | ||
97bfeb34 SP |
147 | extern void release_pack_memory(size_t); |
148 | ||
9befac47 SP |
149 | static inline char* xstrdup(const char *str) |
150 | { | |
151 | char *ret = strdup(str); | |
97bfeb34 SP |
152 | if (!ret) { |
153 | release_pack_memory(strlen(str) + 1); | |
154 | ret = strdup(str); | |
155 | if (!ret) | |
156 | die("Out of memory, strdup failed"); | |
157 | } | |
9befac47 SP |
158 | return ret; |
159 | } | |
160 | ||
4050c0df JH |
161 | static inline void *xmalloc(size_t size) |
162 | { | |
163 | void *ret = malloc(size); | |
4e7a2ecc JH |
164 | if (!ret && !size) |
165 | ret = malloc(1); | |
97bfeb34 SP |
166 | if (!ret) { |
167 | release_pack_memory(size); | |
168 | ret = malloc(size); | |
169 | if (!ret && !size) | |
170 | ret = malloc(1); | |
171 | if (!ret) | |
172 | die("Out of memory, malloc failed"); | |
173 | } | |
aa5481c1 JH |
174 | #ifdef XMALLOC_POISON |
175 | memset(ret, 0xA5, size); | |
176 | #endif | |
4050c0df JH |
177 | return ret; |
178 | } | |
179 | ||
180 | static inline void *xrealloc(void *ptr, size_t size) | |
181 | { | |
182 | void *ret = realloc(ptr, size); | |
4e7a2ecc JH |
183 | if (!ret && !size) |
184 | ret = realloc(ptr, 1); | |
97bfeb34 SP |
185 | if (!ret) { |
186 | release_pack_memory(size); | |
187 | ret = realloc(ptr, size); | |
188 | if (!ret && !size) | |
189 | ret = realloc(ptr, 1); | |
190 | if (!ret) | |
191 | die("Out of memory, realloc failed"); | |
192 | } | |
4050c0df JH |
193 | return ret; |
194 | } | |
195 | ||
196 | static inline void *xcalloc(size_t nmemb, size_t size) | |
197 | { | |
198 | void *ret = calloc(nmemb, size); | |
4e7a2ecc JH |
199 | if (!ret && (!nmemb || !size)) |
200 | ret = calloc(1, 1); | |
97bfeb34 SP |
201 | if (!ret) { |
202 | release_pack_memory(nmemb * size); | |
203 | ret = calloc(nmemb, size); | |
204 | if (!ret && (!nmemb || !size)) | |
205 | ret = calloc(1, 1); | |
206 | if (!ret) | |
207 | die("Out of memory, calloc failed"); | |
208 | } | |
4050c0df JH |
209 | return ret; |
210 | } | |
211 | ||
c4712e45 SP |
212 | static inline void *xmmap(void *start, size_t length, |
213 | int prot, int flags, int fd, off_t offset) | |
214 | { | |
215 | void *ret = mmap(start, length, prot, flags, fd, offset); | |
216 | if (ret == MAP_FAILED) { | |
9130ac1e LT |
217 | if (!length) |
218 | return NULL; | |
c4712e45 SP |
219 | release_pack_memory(length); |
220 | ret = mmap(start, length, prot, flags, fd, offset); | |
221 | if (ret == MAP_FAILED) | |
222 | die("Out of memory? mmap failed: %s", strerror(errno)); | |
223 | } | |
224 | return ret; | |
225 | } | |
226 | ||
1c15afb9 JH |
227 | static inline ssize_t xread(int fd, void *buf, size_t len) |
228 | { | |
229 | ssize_t nr; | |
230 | while (1) { | |
231 | nr = read(fd, buf, len); | |
232 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
233 | continue; | |
234 | return nr; | |
235 | } | |
236 | } | |
237 | ||
238 | static inline ssize_t xwrite(int fd, const void *buf, size_t len) | |
239 | { | |
240 | ssize_t nr; | |
241 | while (1) { | |
242 | nr = write(fd, buf, len); | |
243 | if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) | |
244 | continue; | |
245 | return nr; | |
246 | } | |
247 | } | |
248 | ||
5bb1cda5 | 249 | static inline int has_extension(const char *filename, const char *ext) |
83a2b841 | 250 | { |
5bb1cda5 RS |
251 | size_t len = strlen(filename); |
252 | size_t extlen = strlen(ext); | |
83a2b841 RS |
253 | return len > extlen && !memcmp(filename + len - extlen, ext, extlen); |
254 | } | |
255 | ||
4050c0df JH |
256 | /* Sane ctype - no locale, and works with signed chars */ |
257 | #undef isspace | |
258 | #undef isdigit | |
259 | #undef isalpha | |
260 | #undef isalnum | |
261 | #undef tolower | |
262 | #undef toupper | |
263 | extern unsigned char sane_ctype[256]; | |
264 | #define GIT_SPACE 0x01 | |
265 | #define GIT_DIGIT 0x02 | |
266 | #define GIT_ALPHA 0x04 | |
267 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) | |
268 | #define isspace(x) sane_istest(x,GIT_SPACE) | |
269 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
270 | #define isalpha(x) sane_istest(x,GIT_ALPHA) | |
271 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
272 | #define tolower(x) sane_case((unsigned char)(x), 0x20) | |
273 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
274 | ||
275 | static inline int sane_case(int x, int high) | |
276 | { | |
277 | if (sane_istest(x, GIT_ALPHA)) | |
278 | x = (x & ~0x20) | high; | |
279 | return x; | |
280 | } | |
281 | ||
282 | #endif |