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07800601 IM |
1 | #ifndef GIT_COMPAT_UTIL_H |
2 | #define GIT_COMPAT_UTIL_H | |
3 | ||
4 | #define _FILE_OFFSET_BITS 64 | |
5 | ||
6 | #ifndef FLEX_ARRAY | |
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 | |
25 | #endif | |
26 | #endif | |
27 | ||
28 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) | |
29 | ||
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)))) | |
37 | #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */ | |
38 | ||
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 | ||
07800601 IM |
42 | #define _ALL_SOURCE 1 |
43 | #define _GNU_SOURCE 1 | |
44 | #define _BSD_SOURCE 1 | |
e206d556 | 45 | #define HAS_BOOL |
07800601 IM |
46 | |
47 | #include <unistd.h> | |
48 | #include <stdio.h> | |
49 | #include <sys/stat.h> | |
f6bdafef | 50 | #include <sys/statfs.h> |
07800601 | 51 | #include <fcntl.h> |
e206d556 | 52 | #include <stdbool.h> |
07800601 IM |
53 | #include <stddef.h> |
54 | #include <stdlib.h> | |
55 | #include <stdarg.h> | |
56 | #include <string.h> | |
57 | #include <errno.h> | |
58 | #include <limits.h> | |
59 | #include <sys/param.h> | |
60 | #include <sys/types.h> | |
61 | #include <dirent.h> | |
62 | #include <sys/time.h> | |
63 | #include <time.h> | |
64 | #include <signal.h> | |
65 | #include <fnmatch.h> | |
66 | #include <assert.h> | |
67 | #include <regex.h> | |
68 | #include <utime.h> | |
07800601 IM |
69 | #include <sys/wait.h> |
70 | #include <sys/poll.h> | |
71 | #include <sys/socket.h> | |
72 | #include <sys/ioctl.h> | |
07800601 | 73 | #include <sys/select.h> |
07800601 IM |
74 | #include <netinet/in.h> |
75 | #include <netinet/tcp.h> | |
76 | #include <arpa/inet.h> | |
77 | #include <netdb.h> | |
78 | #include <pwd.h> | |
79 | #include <inttypes.h> | |
f6bdafef | 80 | #include "../../../include/linux/magic.h" |
e206d556 | 81 | #include "types.h" |
46e3e055 | 82 | #include <sys/ttydefaults.h> |
1fe2c106 | 83 | |
2890284b ACM |
84 | extern const char *graph_line; |
85 | extern const char *graph_dotted_line; | |
45de34bb | 86 | extern char buildid_dir[]; |
2890284b | 87 | |
07800601 IM |
88 | /* On most systems <limits.h> would have given us this, but |
89 | * not on some systems (e.g. GNU/Hurd). | |
90 | */ | |
91 | #ifndef PATH_MAX | |
92 | #define PATH_MAX 4096 | |
93 | #endif | |
94 | ||
95 | #ifndef PRIuMAX | |
96 | #define PRIuMAX "llu" | |
97 | #endif | |
98 | ||
99 | #ifndef PRIu32 | |
100 | #define PRIu32 "u" | |
101 | #endif | |
102 | ||
103 | #ifndef PRIx32 | |
104 | #define PRIx32 "x" | |
105 | #endif | |
106 | ||
107 | #ifndef PATH_SEP | |
108 | #define PATH_SEP ':' | |
109 | #endif | |
110 | ||
111 | #ifndef STRIP_EXTENSION | |
112 | #define STRIP_EXTENSION "" | |
113 | #endif | |
114 | ||
115 | #ifndef has_dos_drive_prefix | |
116 | #define has_dos_drive_prefix(path) 0 | |
117 | #endif | |
118 | ||
119 | #ifndef is_dir_sep | |
120 | #define is_dir_sep(c) ((c) == '/') | |
121 | #endif | |
122 | ||
123 | #ifdef __GNUC__ | |
124 | #define NORETURN __attribute__((__noreturn__)) | |
125 | #else | |
126 | #define NORETURN | |
127 | #ifndef __attribute__ | |
128 | #define __attribute__(x) | |
129 | #endif | |
130 | #endif | |
131 | ||
132 | /* General helper functions */ | |
133 | extern void usage(const char *err) NORETURN; | |
134 | extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); | |
135 | extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
136 | extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); | |
137 | ||
9769833b MH |
138 | #include "../../../include/linux/stringify.h" |
139 | ||
140 | #define DIE_IF(cnd) \ | |
141 | do { if (cnd) \ | |
142 | die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ | |
143 | __stringify(cnd) "\n"); \ | |
144 | } while (0) | |
145 | ||
146 | ||
07800601 IM |
147 | extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); |
148 | ||
149 | extern int prefixcmp(const char *str, const char *prefix); | |
45de34bb | 150 | extern void set_buildid_dir(void); |
a1ac1d3c | 151 | extern void disable_buildid_cache(void); |
07800601 IM |
152 | |
153 | static inline const char *skip_prefix(const char *str, const char *prefix) | |
154 | { | |
155 | size_t len = strlen(prefix); | |
156 | return strncmp(str, prefix, len) ? NULL : str + len; | |
157 | } | |
158 | ||
07800601 IM |
159 | #ifdef __GLIBC_PREREQ |
160 | #if __GLIBC_PREREQ(2, 1) | |
161 | #define HAVE_STRCHRNUL | |
162 | #endif | |
163 | #endif | |
164 | ||
165 | #ifndef HAVE_STRCHRNUL | |
166 | #define strchrnul gitstrchrnul | |
167 | static inline char *gitstrchrnul(const char *s, int c) | |
168 | { | |
169 | while (*s && *s != c) | |
170 | s++; | |
171 | return (char *)s; | |
172 | } | |
173 | #endif | |
174 | ||
6f06ccbc IM |
175 | /* |
176 | * Wrappers: | |
177 | */ | |
178 | extern char *xstrdup(const char *str); | |
727dad10 | 179 | extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); |
16f762a2 | 180 | |
a1d37d52 | 181 | |
36479484 ACM |
182 | static inline void *zalloc(size_t size) |
183 | { | |
184 | return calloc(1, size); | |
185 | } | |
186 | ||
07800601 IM |
187 | static inline int has_extension(const char *filename, const char *ext) |
188 | { | |
189 | size_t len = strlen(filename); | |
190 | size_t extlen = strlen(ext); | |
a1d37d52 | 191 | |
07800601 IM |
192 | return len > extlen && !memcmp(filename + len - extlen, ext, extlen); |
193 | } | |
194 | ||
195 | /* Sane ctype - no locale, and works with signed chars */ | |
196 | #undef isascii | |
197 | #undef isspace | |
198 | #undef isdigit | |
9e827dd0 | 199 | #undef isxdigit |
07800601 | 200 | #undef isalpha |
5f9c39dc | 201 | #undef isprint |
07800601 IM |
202 | #undef isalnum |
203 | #undef tolower | |
204 | #undef toupper | |
a1d37d52 | 205 | |
07800601 | 206 | extern unsigned char sane_ctype[256]; |
a73c7d84 PZ |
207 | #define GIT_SPACE 0x01 |
208 | #define GIT_DIGIT 0x02 | |
209 | #define GIT_ALPHA 0x04 | |
210 | #define GIT_GLOB_SPECIAL 0x08 | |
211 | #define GIT_REGEX_SPECIAL 0x10 | |
212 | #define GIT_PRINT_EXTRA 0x20 | |
213 | #define GIT_PRINT 0x3E | |
07800601 IM |
214 | #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) |
215 | #define isascii(x) (((x) & ~0x7f) == 0) | |
216 | #define isspace(x) sane_istest(x,GIT_SPACE) | |
217 | #define isdigit(x) sane_istest(x,GIT_DIGIT) | |
9e827dd0 FW |
218 | #define isxdigit(x) \ |
219 | (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G') | |
07800601 IM |
220 | #define isalpha(x) sane_istest(x,GIT_ALPHA) |
221 | #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) | |
a73c7d84 | 222 | #define isprint(x) sane_istest(x,GIT_PRINT) |
07800601 IM |
223 | #define tolower(x) sane_case((unsigned char)(x), 0x20) |
224 | #define toupper(x) sane_case((unsigned char)(x), 0) | |
225 | ||
226 | static inline int sane_case(int x, int high) | |
227 | { | |
228 | if (sane_istest(x, GIT_ALPHA)) | |
229 | x = (x & ~0x20) | high; | |
230 | return x; | |
231 | } | |
232 | ||
4cf40131 ACM |
233 | int mkdir_p(char *path, mode_t mode); |
234 | int copyfile(const char *from, const char *to); | |
235 | ||
e206d556 ACM |
236 | s64 perf_atoll(const char *str); |
237 | char **argv_split(const char *str, int *argcp); | |
238 | void argv_free(char **argv); | |
239 | bool strglobmatch(const char *str, const char *pat); | |
240 | bool strlazymatch(const char *str, const char *pat); | |
bad03ae4 | 241 | int strtailcmp(const char *s1, const char *s2); |
c82ee828 | 242 | unsigned long convert_unit(unsigned long value, char *unit); |
1e7972cc | 243 | int readn(int fd, void *buf, size_t size); |
e206d556 ACM |
244 | |
245 | #define _STR(x) #x | |
246 | #define STR(x) _STR(x) | |
247 | ||
41d0d933 NE |
248 | /* |
249 | * Determine whether some value is a power of two, where zero is | |
250 | * *not* considered a power of two. | |
251 | */ | |
252 | ||
253 | static inline __attribute__((const)) | |
254 | bool is_power_of_2(unsigned long n) | |
255 | { | |
256 | return (n != 0 && ((n & (n - 1)) == 0)); | |
257 | } | |
258 | ||
07800601 | 259 | #endif |