diff options
Diffstat (limited to 'tools/lib/api/fs/fs.h')
-rw-r--r-- | tools/lib/api/fs/fs.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/tools/lib/api/fs/fs.h b/tools/lib/api/fs/fs.h new file mode 100644 index 000000000..3b70003e7 --- /dev/null +++ b/tools/lib/api/fs/fs.h @@ -0,0 +1,60 @@ +/* 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 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__ */ |