/* SPDX-License-Identifier: GPL-2.0 */
|
#ifndef __API_FS__
|
#define __API_FS__
|
|
#include <stdbool.h>
|
#include <unistd.h>
|
|
/*
|
* On most systems <limits.h> would have given us this, but not on some systems
|
* (e.g. GNU/Hurd).
|
*/
|
#ifndef PATH_MAX
|
#define PATH_MAX 4096
|
#endif
|
|
#define FS(name) \
|
const char *name##__mountpoint(void); \
|
const char *name##__mount(void); \
|
bool name##__configured(void); \
|
|
/*
|
* The xxxx__mountpoint() entry points find the first match mount point for each
|
* filesystems listed below, where xxxx is the filesystem type.
|
*
|
* The interface is as follows:
|
*
|
* - If a mount point is found on first call, it is cached and used for all
|
* subsequent calls.
|
*
|
* - If a mount point is not found, NULL is returned on first call and all
|
* subsequent calls.
|
*/
|
FS(sysfs)
|
FS(procfs)
|
FS(debugfs)
|
FS(tracefs)
|
FS(hugetlbfs)
|
FS(bpf_fs)
|
|
#undef FS
|
|
|
int cgroupfs_find_mountpoint(char *buf, size_t maxlen, const char *subsys);
|
|
int filename__read_int(const char *filename, int *value);
|
int filename__read_ull(const char *filename, unsigned long long *value);
|
int filename__read_xll(const char *filename, unsigned long long *value);
|
int filename__read_str(const char *filename, char **buf, size_t *sizep);
|
|
int filename__write_int(const char *filename, int value);
|
|
int procfs__read_str(const char *entry, char **buf, size_t *sizep);
|
|
int sysctl__read_int(const char *sysctl, int *value);
|
int sysfs__read_int(const char *entry, int *value);
|
int sysfs__read_ull(const char *entry, unsigned long long *value);
|
int sysfs__read_xll(const char *entry, unsigned long long *value);
|
int sysfs__read_str(const char *entry, char **buf, size_t *sizep);
|
int sysfs__read_bool(const char *entry, bool *value);
|
|
int sysfs__write_int(const char *entry, int value);
|
#endif /* __API_FS__ */
|
