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Ingo Molnar07800602009-04-20 15:00:56 +02001#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
Ingo Molnar07800602009-04-20 15:00:56 +020042#define _ALL_SOURCE 1
43#define _GNU_SOURCE 1
44#define _BSD_SOURCE 1
Arnaldo Carvalho de Meloe206d552010-04-03 10:19:26 -030045#define HAS_BOOL
Ingo Molnar07800602009-04-20 15:00:56 +020046
47#include <unistd.h>
48#include <stdio.h>
49#include <sys/stat.h>
Jason Baronf6bdafe2009-07-21 12:20:22 -040050#include <sys/statfs.h>
Ingo Molnar07800602009-04-20 15:00:56 +020051#include <fcntl.h>
Arnaldo Carvalho de Meloe206d552010-04-03 10:19:26 -030052#include <stdbool.h>
Ingo Molnar07800602009-04-20 15:00:56 +020053#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>
Ingo Molnar07800602009-04-20 15:00:56 +020069#include <sys/wait.h>
70#include <sys/poll.h>
71#include <sys/socket.h>
72#include <sys/ioctl.h>
73#ifndef NO_SYS_SELECT_H
74#include <sys/select.h>
75#endif
76#include <netinet/in.h>
77#include <netinet/tcp.h>
78#include <arpa/inet.h>
79#include <netdb.h>
80#include <pwd.h>
81#include <inttypes.h>
Jason Baronf6bdafe2009-07-21 12:20:22 -040082#include "../../../include/linux/magic.h"
Arnaldo Carvalho de Meloe206d552010-04-03 10:19:26 -030083#include "types.h"
Arnaldo Carvalho de Melo46e3e052010-05-22 11:25:40 -030084#include <sys/ttydefaults.h>
Frederic Weisbecker1fe2c102009-08-12 10:19:53 +020085
Ingo Molnar07800602009-04-20 15:00:56 +020086#ifndef NO_ICONV
87#include <iconv.h>
88#endif
89
Arnaldo Carvalho de Melo28902842009-11-23 17:51:08 -020090extern const char *graph_line;
91extern const char *graph_dotted_line;
Stephane Eranian45de34b2010-06-01 21:25:01 +020092extern char buildid_dir[];
Arnaldo Carvalho de Melo28902842009-11-23 17:51:08 -020093
Ingo Molnar07800602009-04-20 15:00:56 +020094/* On most systems <limits.h> would have given us this, but
95 * not on some systems (e.g. GNU/Hurd).
96 */
97#ifndef PATH_MAX
98#define PATH_MAX 4096
99#endif
100
101#ifndef PRIuMAX
102#define PRIuMAX "llu"
103#endif
104
105#ifndef PRIu32
106#define PRIu32 "u"
107#endif
108
109#ifndef PRIx32
110#define PRIx32 "x"
111#endif
112
113#ifndef PATH_SEP
114#define PATH_SEP ':'
115#endif
116
117#ifndef STRIP_EXTENSION
118#define STRIP_EXTENSION ""
119#endif
120
121#ifndef has_dos_drive_prefix
122#define has_dos_drive_prefix(path) 0
123#endif
124
125#ifndef is_dir_sep
126#define is_dir_sep(c) ((c) == '/')
127#endif
128
129#ifdef __GNUC__
130#define NORETURN __attribute__((__noreturn__))
131#else
132#define NORETURN
133#ifndef __attribute__
134#define __attribute__(x)
135#endif
136#endif
137
138/* General helper functions */
139extern void usage(const char *err) NORETURN;
140extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
141extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
142extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
143
Masami Hiramatsu97698332009-10-16 20:08:18 -0400144#include "../../../include/linux/stringify.h"
145
146#define DIE_IF(cnd) \
147 do { if (cnd) \
148 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
149 __stringify(cnd) "\n"); \
150 } while (0)
151
152
Ingo Molnar07800602009-04-20 15:00:56 +0200153extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
154
155extern int prefixcmp(const char *str, const char *prefix);
Stephane Eranian45de34b2010-06-01 21:25:01 +0200156extern void set_buildid_dir(void);
Stephane Eraniana1ac1d32010-06-17 11:39:01 +0200157extern void disable_buildid_cache(void);
Ingo Molnar07800602009-04-20 15:00:56 +0200158
159static inline const char *skip_prefix(const char *str, const char *prefix)
160{
161 size_t len = strlen(prefix);
162 return strncmp(str, prefix, len) ? NULL : str + len;
163}
164
Ingo Molnar07800602009-04-20 15:00:56 +0200165#ifdef __GLIBC_PREREQ
166#if __GLIBC_PREREQ(2, 1)
167#define HAVE_STRCHRNUL
168#endif
169#endif
170
171#ifndef HAVE_STRCHRNUL
172#define strchrnul gitstrchrnul
173static inline char *gitstrchrnul(const char *s, int c)
174{
175 while (*s && *s != c)
176 s++;
177 return (char *)s;
178}
179#endif
180
Ingo Molnar6f06ccb2009-04-20 15:22:22 +0200181/*
182 * Wrappers:
183 */
184extern char *xstrdup(const char *str);
Arnaldo Carvalho de Melo727dad12009-11-24 12:05:17 -0200185extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
Ingo Molnar16f762a2009-05-27 09:10:38 +0200186
Masami Hiramatsua1d37d52010-03-16 18:05:21 -0400187
Arnaldo Carvalho de Melo36479482009-11-24 12:05:16 -0200188static inline void *zalloc(size_t size)
189{
190 return calloc(1, size);
191}
192
Ingo Molnar07800602009-04-20 15:00:56 +0200193static inline int has_extension(const char *filename, const char *ext)
194{
195 size_t len = strlen(filename);
196 size_t extlen = strlen(ext);
Masami Hiramatsua1d37d52010-03-16 18:05:21 -0400197
Ingo Molnar07800602009-04-20 15:00:56 +0200198 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
199}
200
201/* Sane ctype - no locale, and works with signed chars */
202#undef isascii
203#undef isspace
204#undef isdigit
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100205#undef isxdigit
Ingo Molnar07800602009-04-20 15:00:56 +0200206#undef isalpha
Frederic Weisbecker5f9c39d2009-08-17 16:18:08 +0200207#undef isprint
Ingo Molnar07800602009-04-20 15:00:56 +0200208#undef isalnum
209#undef tolower
210#undef toupper
Masami Hiramatsua1d37d52010-03-16 18:05:21 -0400211
Ingo Molnar07800602009-04-20 15:00:56 +0200212extern unsigned char sane_ctype[256];
Peter Zijlstraa73c7d82009-06-18 09:44:20 +0200213#define GIT_SPACE 0x01
214#define GIT_DIGIT 0x02
215#define GIT_ALPHA 0x04
216#define GIT_GLOB_SPECIAL 0x08
217#define GIT_REGEX_SPECIAL 0x10
218#define GIT_PRINT_EXTRA 0x20
219#define GIT_PRINT 0x3E
Ingo Molnar07800602009-04-20 15:00:56 +0200220#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
221#define isascii(x) (((x) & ~0x7f) == 0)
222#define isspace(x) sane_istest(x,GIT_SPACE)
223#define isdigit(x) sane_istest(x,GIT_DIGIT)
Frederic Weisbecker9e827dd2009-11-11 04:51:07 +0100224#define isxdigit(x) \
225 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
Ingo Molnar07800602009-04-20 15:00:56 +0200226#define isalpha(x) sane_istest(x,GIT_ALPHA)
227#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
Peter Zijlstraa73c7d82009-06-18 09:44:20 +0200228#define isprint(x) sane_istest(x,GIT_PRINT)
Ingo Molnar07800602009-04-20 15:00:56 +0200229#define tolower(x) sane_case((unsigned char)(x), 0x20)
230#define toupper(x) sane_case((unsigned char)(x), 0)
231
232static inline int sane_case(int x, int high)
233{
234 if (sane_istest(x, GIT_ALPHA))
235 x = (x & ~0x20) | high;
236 return x;
237}
238
Ingo Molnar07800602009-04-20 15:00:56 +0200239#ifndef DIR_HAS_BSD_GROUP_SEMANTICS
240# define FORCE_DIR_SET_GID S_ISGID
241#else
242# define FORCE_DIR_SET_GID 0
243#endif
244
245#ifdef NO_NSEC
246#undef USE_NSEC
247#define ST_CTIME_NSEC(st) 0
248#define ST_MTIME_NSEC(st) 0
249#else
250#ifdef USE_ST_TIMESPEC
251#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec))
252#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec))
253#else
254#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec))
255#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec))
256#endif
257#endif
258
Arnaldo Carvalho de Melo4cf40132009-12-27 21:37:06 -0200259int mkdir_p(char *path, mode_t mode);
260int copyfile(const char *from, const char *to);
261
Arnaldo Carvalho de Meloe206d552010-04-03 10:19:26 -0300262s64 perf_atoll(const char *str);
263char **argv_split(const char *str, int *argcp);
264void argv_free(char **argv);
265bool strglobmatch(const char *str, const char *pat);
266bool strlazymatch(const char *str, const char *pat);
Arnaldo Carvalho de Meloc82ee822010-05-14 14:19:35 -0300267unsigned long convert_unit(unsigned long value, char *unit);
Arnaldo Carvalho de Melo1e7972c2011-01-03 16:50:55 -0200268int readn(int fd, void *buf, size_t size);
Arnaldo Carvalho de Meloe206d552010-04-03 10:19:26 -0300269
270#define _STR(x) #x
271#define STR(x) _STR(x)
272
Ingo Molnar07800602009-04-20 15:00:56 +0200273#endif