Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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/* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
43#define _DEFAULT_SOURCE 1
44#define HAS_BOOL
45
46#include <unistd.h>
47#include <stdio.h>
48#include <sys/stat.h>
49#include <sys/statfs.h>
50#include <fcntl.h>
51#include <stdbool.h>
52#include <stddef.h>
53#include <stdlib.h>
54#include <stdarg.h>
55#include <string.h>
56#include <term.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>
69#include <sys/wait.h>
70#include <poll.h>
71#include <sys/socket.h>
72#include <sys/ioctl.h>
73#include <inttypes.h>
74#include <linux/kernel.h>
75#include <linux/types.h>
76#include <sys/ttydefaults.h>
77#include <api/fs/tracing_path.h>
78#include <termios.h>
79#include <linux/bitops.h>
80#include <termios.h>
81#include "strlist.h"
82
83extern const char *graph_line;
84extern const char *graph_dotted_line;
85extern const char *spaces;
86extern const char *dots;
87extern char buildid_dir[];
88
89/* On most systems <limits.h> would have given us this, but
90 * not on some systems (e.g. GNU/Hurd).
91 */
92#ifndef PATH_MAX
93#define PATH_MAX 4096
94#endif
95
96#ifndef PRIuMAX
97#define PRIuMAX "llu"
98#endif
99
100#ifndef PRIu32
101#define PRIu32 "u"
102#endif
103
104#ifndef PRIx32
105#define PRIx32 "x"
106#endif
107
108#ifndef PATH_SEP
109#define PATH_SEP ':'
110#endif
111
112#ifndef STRIP_EXTENSION
113#define STRIP_EXTENSION ""
114#endif
115
116#ifndef has_dos_drive_prefix
117#define has_dos_drive_prefix(path) 0
118#endif
119
120#ifndef is_dir_sep
121#define is_dir_sep(c) ((c) == '/')
122#endif
123
124#ifdef __GNUC__
125#define NORETURN __attribute__((__noreturn__))
126#else
127#define NORETURN
128#ifndef __attribute__
129#define __attribute__(x)
130#endif
131#endif
132
133#define PERF_GTK_DSO "libperf-gtk.so"
134
135/* General helper functions */
136void usage(const char *err) NORETURN;
137void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
138int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
139void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
140
141void set_warning_routine(void (*routine)(const char *err, va_list params));
142
143int prefixcmp(const char *str, const char *prefix);
144void set_buildid_dir(const char *dir);
145
146#ifdef __GLIBC_PREREQ
147#if __GLIBC_PREREQ(2, 1)
148#define HAVE_STRCHRNUL
149#endif
150#endif
151
152#ifndef HAVE_STRCHRNUL
153#define strchrnul gitstrchrnul
154static inline char *gitstrchrnul(const char *s, int c)
155{
156 while (*s && *s != c)
157 s++;
158 return (char *)s;
159}
160#endif
161
162static inline void *zalloc(size_t size)
163{
164 return calloc(1, size);
165}
166
167#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
168
169/* Sane ctype - no locale, and works with signed chars */
170#undef isascii
171#undef isspace
172#undef isdigit
173#undef isxdigit
174#undef isalpha
175#undef isprint
176#undef isalnum
177#undef islower
178#undef isupper
179#undef tolower
180#undef toupper
181
182extern unsigned char sane_ctype[256];
183#define GIT_SPACE 0x01
184#define GIT_DIGIT 0x02
185#define GIT_ALPHA 0x04
186#define GIT_GLOB_SPECIAL 0x08
187#define GIT_REGEX_SPECIAL 0x10
188#define GIT_PRINT_EXTRA 0x20
189#define GIT_PRINT 0x3E
190#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
191#define isascii(x) (((x) & ~0x7f) == 0)
192#define isspace(x) sane_istest(x,GIT_SPACE)
193#define isdigit(x) sane_istest(x,GIT_DIGIT)
194#define isxdigit(x) \
195 (sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
196#define isalpha(x) sane_istest(x,GIT_ALPHA)
197#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
198#define isprint(x) sane_istest(x,GIT_PRINT)
199#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
200#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
201#define tolower(x) sane_case((unsigned char)(x), 0x20)
202#define toupper(x) sane_case((unsigned char)(x), 0)
203
204static inline int sane_case(int x, int high)
205{
206 if (sane_istest(x, GIT_ALPHA))
207 x = (x & ~0x20) | high;
208 return x;
209}
210
211int mkdir_p(char *path, mode_t mode);
212int rm_rf(char *path);
213struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
214bool lsdir_no_dot_filter(const char *name, struct dirent *d);
215int copyfile(const char *from, const char *to);
216int copyfile_mode(const char *from, const char *to, mode_t mode);
217int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size);
218
219s64 perf_atoll(const char *str);
220char **argv_split(const char *str, int *argcp);
221void argv_free(char **argv);
222bool strglobmatch(const char *str, const char *pat);
223bool strglobmatch_nocase(const char *str, const char *pat);
224bool strlazymatch(const char *str, const char *pat);
225static inline bool strisglob(const char *str)
226{
227 return strpbrk(str, "*?[") != NULL;
228}
229int strtailcmp(const char *s1, const char *s2);
230char *strxfrchar(char *s, char from, char to);
231unsigned long convert_unit(unsigned long value, char *unit);
232ssize_t readn(int fd, void *buf, size_t n);
233ssize_t writen(int fd, void *buf, size_t n);
234
235struct perf_event_attr;
236
237void event_attr_init(struct perf_event_attr *attr);
238
239#define _STR(x) #x
240#define STR(x) _STR(x)
241
242size_t hex_width(u64 v);
243int hex2u64(const char *ptr, u64 *val);
244
245char *ltrim(char *s);
246char *rtrim(char *s);
247
248static inline char *trim(char *s)
249{
250 return ltrim(rtrim(s));
251}
252
253void dump_stack(void);
254void sighandler_dump_stack(int sig);
255
256extern unsigned int page_size;
257extern int cacheline_size;
258extern int sysctl_perf_event_max_stack;
259extern int sysctl_perf_event_max_contexts_per_stack;
260
261struct parse_tag {
262 char tag;
263 int mult;
264};
265
266unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
267
268#define SRCLINE_UNKNOWN ((char *) "??:0")
269
270static inline int path__join(char *bf, size_t size,
271 const char *path1, const char *path2)
272{
273 return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2);
274}
275
276static inline int path__join3(char *bf, size_t size,
277 const char *path1, const char *path2,
278 const char *path3)
279{
280 return scnprintf(bf, size, "%s%s%s%s%s",
281 path1, path1[0] ? "/" : "",
282 path2, path2[0] ? "/" : "", path3);
283}
284
285struct dso;
286struct symbol;
287
288extern bool srcline_full_filename;
289char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
290 bool show_sym);
291char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
292 bool show_sym, bool unwind_inlines);
293void free_srcline(char *srcline);
294
295int perf_event_paranoid(void);
296
297void mem_bswap_64(void *src, int byte_size);
298void mem_bswap_32(void *src, int byte_size);
299
300const char *get_filename_for_perf_kvm(void);
301bool find_process(const char *name);
302
303#ifdef HAVE_ZLIB_SUPPORT
304int gzip_decompress_to_file(const char *input, int output_fd);
305#endif
306
307#ifdef HAVE_LZMA_SUPPORT
308int lzma_decompress_to_file(const char *input, int output_fd);
309#endif
310
311char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints);
312
313static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints)
314{
315 return asprintf_expr_inout_ints(var, true, nints, ints);
316}
317
318static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints)
319{
320 return asprintf_expr_inout_ints(var, false, nints, ints);
321}
322
323int get_stack_size(const char *str, unsigned long *_size);
324
325int fetch_kernel_version(unsigned int *puint,
326 char *str, size_t str_sz);
327#define KVER_VERSION(x) (((x) >> 16) & 0xff)
328#define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
329#define KVER_SUBLEVEL(x) ((x) & 0xff)
330#define KVER_FMT "%d.%d.%d"
331#define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
332
333const char *perf_tip(const char *dirpath);
334bool is_regular_file(const char *file);
335int fetch_current_timestamp(char *buf, size_t sz);
336
337enum binary_printer_ops {
338 BINARY_PRINT_DATA_BEGIN,
339 BINARY_PRINT_LINE_BEGIN,
340 BINARY_PRINT_ADDR,
341 BINARY_PRINT_NUM_DATA,
342 BINARY_PRINT_NUM_PAD,
343 BINARY_PRINT_SEP,
344 BINARY_PRINT_CHAR_DATA,
345 BINARY_PRINT_CHAR_PAD,
346 BINARY_PRINT_LINE_END,
347 BINARY_PRINT_DATA_END,
348};
349
350typedef void (*print_binary_t)(enum binary_printer_ops,
351 unsigned int val,
352 void *extra);
353
354void print_binary(unsigned char *data, size_t len,
355 size_t bytes_per_line, print_binary_t printer,
356 void *extra);
357
358#if !defined(__GLIBC__) && !defined(__ANDROID__)
359extern int sched_getcpu(void);
360#endif
361
362int is_printable_array(char *p, unsigned int len);
363
364int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz);
365
366#endif /* GIT_COMPAT_UTIL_H */