tools/lib/api/fs/fs.h

   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 procfs__read_str(const char *entry, char **buf, size_t *sizep);
  35
  36 int sysctl__read_int(const char *sysctl, int *value);
  37 int sysfs__read_int(const char *entry, int *value);
  38 int sysfs__read_ull(const char *entry, unsigned long long *value);
  39 int sysfs__read_str(const char *entry, char **buf, size_t *sizep);
  40 #endif /* __API_FS__ */