kprotos.h

int sys_symlink(bool kernel, const char *oldpath, int nfd,
                const char *newpath);
ssize_t sys_readlink(bool kernel, int fd, const char *path, char *buf,
                     size_t bufsize);
int sys_mkdir(bool kernel, int fd, const char *path, int perms);
int sys_open(bool kernel, int fd, const char *path, int omode,
                int perms, bool coe);
int sys_close(bool kernel, int fd);
fs_off_t sys_lseek(bool kernel, int fd, fs_off_t pos, int whence);
ssize_t sys_read(bool kernel, int fd, void *buf, size_t len);
ssize_t sys_write(bool kernel, int fd, void *buf, size_t len);
int sys_ioctl(bool kernel, int fd, int cmd, void *arg, size_t sz);
int sys_unlink(bool kernel, int fd, const char *path);
int sys_link(bool kernel, int ofd, const char *oldpath, int nfd,
             const char *newpath);
int sys_rmdir(bool kernel, int fd, const char *path);
int sys_rename(bool glb, int fd, const char *oldpath,
                  int nfd, const char *newpath);
void *sys_mount(bool kernel, const char *filesystem, int fd,
                const char *where, const char *device, ulong flags,
                void *parms, size_t len);
int sys_unmount(bool kernel, int fd, const char *where);
int sys_rstat(bool kernel, int fd, const char *path, struct my_stat *st,
              bool eatlink);
int sys_wstat(bool kernel, int fd, const char *path, struct my_stat *st,
              long mask, bool eatlink);
int sys_ioctl(bool kernel, int fd, int cmd, void *arg, size_t sz);

int sys_opendir(bool kernel, int fd, const char *path, bool coe);
int  sys_readdir(bool kernel, int fd, struct my_dirent *buf, size_t bufsize,
                 long count);
int sys_rewinddir(bool kernel, int fd);
int sys_closedir(bool kernel, int fd);
int sys_chdir(bool kernel, int fd, const char *path);
int sys_access(bool kernel, int fd, const char *path, int mode);

int sys_sync(void);
int init_vnode_layer(void);
void *install_file_system(vnode_ops *ops, const char *name,
                          bool fixed, image_id aid);