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 26 #undef FS 27 28 29 int filename__read_int(const char *filename, int *value); 30 int filename__read_ull(const char *filename, unsigned long long *value); 31 int filename__read_str(const char *filename, char **buf, size_t *sizep); 32 33 int procfs__read_str(const char *entry, char **buf, size_t *sizep); 34 35 int sysctl__read_int(const char *sysctl, int *value); 36 int sysfs__read_int(const char *entry, int *value); 37 int sysfs__read_ull(const char *entry, unsigned long long *value); 38 int sysfs__read_str(const char *entry, char **buf, size_t *sizep); 39 #endif /* __API_FS__ */ 40