xref: /openbmc/linux/tools/lib/api/fs/fs.h (revision 8ee90c5c)
1 #ifndef __API_FS__
2 #define __API_FS__
3 
4 #include <stdbool.h>
5 #include <unistd.h>
6 
7 /*
8  * On most systems <limits.h> would have given us this, but  not on some systems
9  * (e.g. GNU/Hurd).
10  */
11 #ifndef PATH_MAX
12 #define PATH_MAX 4096
13 #endif
14 
15 #define FS(name)				\
16 	const char *name##__mountpoint(void);	\
17 	const char *name##__mount(void);	\
18 	bool name##__configured(void);		\
19 
20 FS(sysfs)
21 FS(procfs)
22 FS(debugfs)
23 FS(tracefs)
24 FS(hugetlbfs)
25 FS(bpf_fs)
26 
27 #undef FS
28 
29 
30 int filename__read_int(const char *filename, int *value);
31 int filename__read_ull(const char *filename, unsigned long long *value);
32 int filename__read_str(const char *filename, char **buf, size_t *sizep);
33 
34 int filename__write_int(const char *filename, int value);
35 
36 int procfs__read_str(const char *entry, char **buf, size_t *sizep);
37 
38 int sysctl__read_int(const char *sysctl, int *value);
39 int sysfs__read_int(const char *entry, int *value);
40 int sysfs__read_ull(const char *entry, unsigned long long *value);
41 int sysfs__read_str(const char *entry, char **buf, size_t *sizep);
42 int sysfs__read_bool(const char *entry, bool *value);
43 
44 int sysfs__write_int(const char *entry, int value);
45 #endif /* __API_FS__ */
46