size_t *num_bytes);
int read_nonblock(int fd, void *buf, size_t sz, fd_set *rfds, size_t *num_bytes);
int read_pattern(int fd, const char *pattern, size_t bufsize, fd_set *rfds);
-int write_nonblock(int fd, const char *buf, size_t len,
- size_t max_bytes_per_write);
+int write_nonblock(int fd, const char *buf, size_t len);
int for_each_file_in_dir(const char *dirname,
int (*func)(const char *, void *), void *private_data);