Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __API_FS__
3#define __API_FS__
4
5#include <stdbool.h>
6#include <unistd.h>
7
8/*
9 * On most systems <limits.h> would have given us this, but not on some systems
10 * (e.g. GNU/Hurd).
11 */
12#ifndef PATH_MAX
13#define PATH_MAX 4096
14#endif
15
16#define FS(name) \
17 const char *name##__mountpoint(void); \
18 const char *name##__mount(void); \
19 bool name##__configured(void); \
20
21FS(sysfs)
22FS(procfs)
23FS(debugfs)
24FS(tracefs)
25FS(hugetlbfs)
26FS(bpf_fs)
27
28#undef FS
29
30
31int cgroupfs_find_mountpoint(char *buf, size_t maxlen, const char *subsys);
32
33int filename__read_int(const char *filename, int *value);
34int filename__read_ull(const char *filename, unsigned long long *value);
35int filename__read_xll(const char *filename, unsigned long long *value);
36int filename__read_str(const char *filename, char **buf, size_t *sizep);
37
38int filename__write_int(const char *filename, int value);
39
40int procfs__read_str(const char *entry, char **buf, size_t *sizep);
41
42int sysctl__read_int(const char *sysctl, int *value);
43int sysfs__read_int(const char *entry, int *value);
44int sysfs__read_ull(const char *entry, unsigned long long *value);
45int sysfs__read_xll(const char *entry, unsigned long long *value);
46int sysfs__read_str(const char *entry, char **buf, size_t *sizep);
47int sysfs__read_bool(const char *entry, bool *value);
48
49int sysfs__write_int(const char *entry, int value);
50#endif /* __API_FS__ */