Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef GIT_COMPAT_UTIL_H
2#define GIT_COMPAT_UTIL_H
3
4#ifndef FLEX_ARRAY
5/*
6 * See if our compiler is known to support flexible array members.
7 */
8#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
9# define FLEX_ARRAY /* empty */
10#elif defined(__GNUC__)
11# if (__GNUC__ >= 3)
12# define FLEX_ARRAY /* empty */
13# else
14# define FLEX_ARRAY 0 /* older GNU extension */
15# endif
16#endif
17
18/*
19 * Otherwise, default to safer but a bit wasteful traditional style
20 */
21#ifndef FLEX_ARRAY
22# define FLEX_ARRAY 1
23#endif
24#endif
25
26#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
27
28#ifdef __GNUC__
29#define TYPEOF(x) (__typeof__(x))
30#else
31#define TYPEOF(x)
32#endif
33
34#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
35#define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
36
37/* Approximation of the length of the decimal representation of this type. */
38#define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
39
40#define _ALL_SOURCE 1
41#define _BSD_SOURCE 1
42#define HAS_BOOL
43
44#include <unistd.h>
45#include <stdio.h>
46#include <sys/stat.h>
47#include <sys/statfs.h>
48#include <fcntl.h>
49#include <stdbool.h>
50#include <stddef.h>
51#include <stdlib.h>
52#include <stdarg.h>
53#include <string.h>
54#include <errno.h>
55#include <limits.h>
56#include <sys/param.h>
57#include <sys/types.h>
58#include <dirent.h>
59#include <sys/time.h>
60#include <time.h>
61#include <signal.h>
62#include <fnmatch.h>
63#include <assert.h>
64#include <regex.h>
65#include <utime.h>
66#include <sys/wait.h>
67#include <sys/poll.h>
68#include <sys/socket.h>
69#include <sys/ioctl.h>
70#include <inttypes.h>
71#include <linux/magic.h>
72#include "types.h"
73#include <sys/ttydefaults.h>
74#include <lk/debugfs.h>
75#include <termios.h>
76
77extern const char *graph_line;
78extern const char *graph_dotted_line;
79extern char buildid_dir[];
80extern char tracing_events_path[];
81extern void perf_debugfs_set_path(const char *mountpoint);
82const char *perf_debugfs_mount(const char *mountpoint);
83
84/* On most systems <limits.h> would have given us this, but
85 * not on some systems (e.g. GNU/Hurd).
86 */
87#ifndef PATH_MAX
88#define PATH_MAX 4096
89#endif
90
91#ifndef PRIuMAX
92#define PRIuMAX "llu"
93#endif
94
95#ifndef PRIu32
96#define PRIu32 "u"
97#endif
98
99#ifndef PRIx32
100#define PRIx32 "x"
101#endif
102
103#ifndef PATH_SEP
104#define PATH_SEP ':'
105#endif
106
107#ifndef STRIP_EXTENSION
108#define STRIP_EXTENSION ""
109#endif
110
111#ifndef has_dos_drive_prefix
112#define has_dos_drive_prefix(path) 0
113#endif
114
115#ifndef is_dir_sep
116#define is_dir_sep(c) ((c) == '/')
117#endif
118
119#ifdef __GNUC__
120#define NORETURN __attribute__((__noreturn__))
121#else
122#define NORETURN
123#ifndef __attribute__
124#define __attribute__(x)
125#endif
126#endif
127
128/* General helper functions */
129extern void usage(const char *err) NORETURN;
130extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
131extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
132extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
133
134#include "../../../include/linux/stringify.h"
135
136#define DIE_IF(cnd) \
137 do { if (cnd) \
138 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
139 __stringify(cnd) "\n"); \
140 } while (0)
141
142
143extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
144
145extern int prefixcmp(const char *str, const char *prefix);
146extern void set_buildid_dir(void);
147extern void disable_buildid_cache(void);
148
149static inline const char *skip_prefix(const char *str, const char *prefix)
150{
151 size_t len = strlen(prefix);
152 return strncmp(str, prefix, len) ? NULL : str + len;
153}
154
155#ifdef __GLIBC_PREREQ
156#if __GLIBC_PREREQ(2, 1)
157#define HAVE_STRCHRNUL
158#endif
159#endif
160
161#ifndef HAVE_STRCHRNUL
162#define strchrnul gitstrchrnul
163static inline char *gitstrchrnul(const char *s, int c)
164{
165 while (*s && *s != c)
166 s++;
167 return (char *)s;
168}
169#endif
170
171/*
172 * Wrappers:
173 */
174extern char *xstrdup(const char *str);
175extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
176
177
178static inline void *zalloc(size_t size)
179{
180 return calloc(1, size);
181}
182
183static inline int has_extension(const char *filename, const char *ext)
184{
185 size_t len = strlen(filename);
186 size_t extlen = strlen(ext);
187
188 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
189}
190
191/* Sane ctype - no locale, and works with signed chars */
192#undef isascii
193#undef isspace
194#undef isdigit
195#undef isxdigit
196#undef isalpha
197#undef isprint
198#undef isalnum
199#undef islower
200#undef isupper
201#undef tolower
202#undef toupper
203
204#ifndef NSEC_PER_MSEC
205#define NSEC_PER_MSEC 1000000L
206#endif
207
208extern unsigned char sane_ctype[256];
209#define GIT_SPACE 0x01
210#define GIT_DIGIT 0x02
211#define GIT_ALPHA 0x04
212#define GIT_GLOB_SPECIAL 0x08
213#define GIT_REGEX_SPECIAL 0x10
214#define GIT_PRINT_EXTRA 0x20
215#define GIT_PRINT 0x3E
216#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
217#define isascii(x) (((x) & ~0x7f) == 0)
218#define isspace(x) sane_istest(x,GIT_SPACE)
219#define isdigit(x) sane_istest(x,GIT_DIGIT)
220#define isxdigit(x) \
221 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
222#define isalpha(x) sane_istest(x,GIT_ALPHA)
223#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
224#define isprint(x) sane_istest(x,GIT_PRINT)
225#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
226#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
227#define tolower(x) sane_case((unsigned char)(x), 0x20)
228#define toupper(x) sane_case((unsigned char)(x), 0)
229
230static inline int sane_case(int x, int high)
231{
232 if (sane_istest(x, GIT_ALPHA))
233 x = (x & ~0x20) | high;
234 return x;
235}
236
237int mkdir_p(char *path, mode_t mode);
238int copyfile(const char *from, const char *to);
239
240s64 perf_atoll(const char *str);
241char **argv_split(const char *str, int *argcp);
242void argv_free(char **argv);
243bool strglobmatch(const char *str, const char *pat);
244bool strlazymatch(const char *str, const char *pat);
245int strtailcmp(const char *s1, const char *s2);
246char *strxfrchar(char *s, char from, char to);
247unsigned long convert_unit(unsigned long value, char *unit);
248int readn(int fd, void *buf, size_t size);
249
250struct perf_event_attr;
251
252void event_attr_init(struct perf_event_attr *attr);
253
254#define _STR(x) #x
255#define STR(x) _STR(x)
256
257/*
258 * Determine whether some value is a power of two, where zero is
259 * *not* considered a power of two.
260 */
261
262static inline __attribute__((const))
263bool is_power_of_2(unsigned long n)
264{
265 return (n != 0 && ((n & (n - 1)) == 0));
266}
267
268size_t hex_width(u64 v);
269int hex2u64(const char *ptr, u64 *val);
270
271char *ltrim(char *s);
272char *rtrim(char *s);
273
274void dump_stack(void);
275
276extern unsigned int page_size;
277
278void get_term_dimensions(struct winsize *ws);
279#endif /* GIT_COMPAT_UTIL_H */