__must_check int mark_fd_blocking(int fd);
int para_mmap(size_t length, int prot, int flags, int fd, void *map);
int para_open(const char *path, int flags, mode_t mode);
-int para_mkdir(const char *path, mode_t mode);
+int para_mkdir(const char *path);
int mmap_full_file(const char *filename, int open_mode, void **map,
size_t *size, int *fd_ptr);
int para_munmap(void *start, size_t length);
int read_and_compare(int fd, const char *expectation);
int xwrite(int fd, const char *buf, size_t len);
int xwritev(int fd, struct iovec *iov, int iovcnt);
-int for_each_file_in_dir(const char *dirname,
- int (*func)(const char *, void *), void *private_data);
+
/**
* Write a \p NULL-terminated buffer.
*