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);
83const char *find_tracing_dir(void);
84char *get_tracing_file(const char *name);
85void put_tracing_file(char *file);
86
87/* On most systems <limits.h> would have given us this, but
88 * not on some systems (e.g. GNU/Hurd).
89 */
90#ifndef PATH_MAX
91#define PATH_MAX 4096
92#endif
93
94#ifndef PRIuMAX
95#define PRIuMAX "llu"
96#endif
97
98#ifndef PRIu32
99#define PRIu32 "u"
100#endif
101
102#ifndef PRIx32
103#define PRIx32 "x"
104#endif
105
106#ifndef PATH_SEP
107#define PATH_SEP ':'
108#endif
109
110#ifndef STRIP_EXTENSION
111#define STRIP_EXTENSION ""
112#endif
113
114#ifndef has_dos_drive_prefix
115#define has_dos_drive_prefix(path) 0
116#endif
117
118#ifndef is_dir_sep
119#define is_dir_sep(c) ((c) == '/')
120#endif
121
122#ifdef __GNUC__
123#define NORETURN __attribute__((__noreturn__))
124#else
125#define NORETURN
126#ifndef __attribute__
127#define __attribute__(x)
128#endif
129#endif
130
131#define PERF_GTK_DSO "libperf-gtk.so"
132
133/* General helper functions */
134extern void usage(const char *err) NORETURN;
135extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
136extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
137extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
138
139#include "../../../include/linux/stringify.h"
140
141#define DIE_IF(cnd) \
142 do { if (cnd) \
143 die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
144 __stringify(cnd) "\n"); \
145 } while (0)
146
147
148extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
149
150extern int prefixcmp(const char *str, const char *prefix);
151extern void set_buildid_dir(void);
152extern void disable_buildid_cache(void);
153
154static inline const char *skip_prefix(const char *str, const char *prefix)
155{
156 size_t len = strlen(prefix);
157 return strncmp(str, prefix, len) ? NULL : str + len;
158}
159
160#ifdef __GLIBC_PREREQ
161#if __GLIBC_PREREQ(2, 1)
162#define HAVE_STRCHRNUL
163#endif
164#endif
165
166#ifndef HAVE_STRCHRNUL
167#define strchrnul gitstrchrnul
168static inline char *gitstrchrnul(const char *s, int c)
169{
170 while (*s && *s != c)
171 s++;
172 return (char *)s;
173}
174#endif
175
176/*
177 * Wrappers:
178 */
179extern char *xstrdup(const char *str);
180extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
181
182
183static inline void *zalloc(size_t size)
184{
185 return calloc(1, size);
186}
187
188static inline int has_extension(const char *filename, const char *ext)
189{
190 size_t len = strlen(filename);
191 size_t extlen = strlen(ext);
192
193 return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
194}
195
196/* Sane ctype - no locale, and works with signed chars */
197#undef isascii
198#undef isspace
199#undef isdigit
200#undef isxdigit
201#undef isalpha
202#undef isprint
203#undef isalnum
204#undef islower
205#undef isupper
206#undef tolower
207#undef toupper
208
209#ifndef NSEC_PER_MSEC
210#define NSEC_PER_MSEC 1000000L
211#endif
212
213int parse_nsec_time(const char *str, u64 *ptime);
214
215extern unsigned char sane_ctype[256];
216#define GIT_SPACE 0x01
217#define GIT_DIGIT 0x02
218#define GIT_ALPHA 0x04
219#define GIT_GLOB_SPECIAL 0x08
220#define GIT_REGEX_SPECIAL 0x10
221#define GIT_PRINT_EXTRA 0x20
222#define GIT_PRINT 0x3E
223#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
224#define isascii(x) (((x) & ~0x7f) == 0)
225#define isspace(x) sane_istest(x,GIT_SPACE)
226#define isdigit(x) sane_istest(x,GIT_DIGIT)
227#define isxdigit(x) \
228 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
229#define isalpha(x) sane_istest(x,GIT_ALPHA)
230#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
231#define isprint(x) sane_istest(x,GIT_PRINT)
232#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
233#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
234#define tolower(x) sane_case((unsigned char)(x), 0x20)
235#define toupper(x) sane_case((unsigned char)(x), 0)
236
237static inline int sane_case(int x, int high)
238{
239 if (sane_istest(x, GIT_ALPHA))
240 x = (x & ~0x20) | high;
241 return x;
242}
243
244int mkdir_p(char *path, mode_t mode);
245int copyfile(const char *from, const char *to);
246int copyfile_mode(const char *from, const char *to, mode_t mode);
247
248s64 perf_atoll(const char *str);
249char **argv_split(const char *str, int *argcp);
250void argv_free(char **argv);
251bool strglobmatch(const char *str, const char *pat);
252bool strlazymatch(const char *str, const char *pat);
253int strtailcmp(const char *s1, const char *s2);
254char *strxfrchar(char *s, char from, char to);
255unsigned long convert_unit(unsigned long value, char *unit);
256int readn(int fd, void *buf, size_t size);
257
258struct perf_event_attr;
259
260void event_attr_init(struct perf_event_attr *attr);
261
262#define _STR(x) #x
263#define STR(x) _STR(x)
264
265/*
266 * Determine whether some value is a power of two, where zero is
267 * *not* considered a power of two.
268 */
269
270static inline __attribute__((const))
271bool is_power_of_2(unsigned long n)
272{
273 return (n != 0 && ((n & (n - 1)) == 0));
274}
275
276static inline unsigned next_pow2(unsigned x)
277{
278 if (!x)
279 return 1;
280 return 1ULL << (32 - __builtin_clz(x - 1));
281}
282
283size_t hex_width(u64 v);
284int hex2u64(const char *ptr, u64 *val);
285
286char *ltrim(char *s);
287char *rtrim(char *s);
288
289void dump_stack(void);
290
291extern unsigned int page_size;
292
293void get_term_dimensions(struct winsize *ws);
294
295struct parse_tag {
296 char tag;
297 int mult;
298};
299
300unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
301
302#define SRCLINE_UNKNOWN ((char *) "??:0")
303
304struct dso;
305
306char *get_srcline(struct dso *dso, unsigned long addr);
307void free_srcline(char *srcline);
308
309int filename__read_int(const char *filename, int *value);
310#endif /* GIT_COMPAT_UTIL_H */