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