Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef GIT_COMPAT_UTIL_H
3#define GIT_COMPAT_UTIL_H
4
5#define _BSD_SOURCE 1
6/* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
7#define _DEFAULT_SOURCE 1
8
9#include <fcntl.h>
10#include <stdbool.h>
11#include <stddef.h>
12#include <stdlib.h>
13#include <stdarg.h>
14#include <linux/compiler.h>
15#include <sys/types.h>
16
17/* General helper functions */
18void usage(const char *err) __noreturn;
19void die(const char *err, ...) __noreturn __printf(1, 2);
20
21static inline void *zalloc(size_t size)
22{
23 return calloc(1, size);
24}
25
26#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
27
28struct dirent;
29struct nsinfo;
30struct strlist;
31
32int mkdir_p(char *path, mode_t mode);
33int rm_rf(const char *path);
34struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
35bool lsdir_no_dot_filter(const char *name, struct dirent *d);
36int copyfile(const char *from, const char *to);
37int copyfile_mode(const char *from, const char *to, mode_t mode);
38int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi);
39int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size);
40
41ssize_t readn(int fd, void *buf, size_t n);
42ssize_t writen(int fd, const void *buf, size_t n);
43
44size_t hex_width(u64 v);
45int hex2u64(const char *ptr, u64 *val);
46
47extern unsigned int page_size;
48int __pure cacheline_size(void);
49
50int sysctl__max_stack(void);
51
52int fetch_kernel_version(unsigned int *puint,
53 char *str, size_t str_sz);
54#define KVER_VERSION(x) (((x) >> 16) & 0xff)
55#define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
56#define KVER_SUBLEVEL(x) ((x) & 0xff)
57#define KVER_FMT "%d.%d.%d"
58#define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
59
60const char *perf_tip(const char *dirpath);
61
62#ifndef HAVE_SCHED_GETCPU_SUPPORT
63int sched_getcpu(void);
64#endif
65
66#ifndef HAVE_SETNS_SUPPORT
67int setns(int fd, int nstype);
68#endif
69
70extern bool perf_singlethreaded;
71
72void perf_set_singlethreaded(void);
73void perf_set_multithreaded(void);
74
75#ifndef O_CLOEXEC
76#ifdef __sparc__
77#define O_CLOEXEC 0x400000
78#elif defined(__alpha__) || defined(__hppa__)
79#define O_CLOEXEC 010000000
80#else
81#define O_CLOEXEC 02000000
82#endif
83#endif
84
85#endif /* GIT_COMPAT_UTIL_H */