17 struct io {  struct
34 static inline void io__init(struct io *io, int fd,  in io__init()  argument
37 	io->fd = fd;  in io__init()
38 	io->buf_len = buf_len;  in io__init()
39 	io->buf = buf;  in io__init()
40 	io->end = buf;  in io__init()
41 	io->data = buf;  in io__init()
42 	io->timeout_ms = 0;  in io__init()
43 	io->eof = false;  in io__init()
46 /* Reads one character from the "io" file with similar semantics to fgetc. */
47 static inline int io__get_char(struct io *io)  in io__get_char()  argument
49 	char *ptr = io->data;  in io__get_char()
51 	if (io->eof)  in io__get_char()
54 	if (ptr == io->end) {  in io__get_char()
57 		if (io->timeout_ms != 0) {  in io__get_char()
60 					.fd = io->fd,  in io__get_char()
65 			n = poll(pfds, 1, io->timeout_ms);  in io__get_char()
73 				io->eof = true;  in io__get_char()
77 		n = read(io->fd, io->buf, io->buf_len);  in io__get_char()
80 			io->eof = true;  in io__get_char()
83 		ptr = &io->buf[0];  in io__get_char()
84 		io->end = &io->buf[n];  in io__get_char()
86 	io->data = ptr + 1;  in io__get_char()
91  * first character isn't hexadecimal returns -2, io->eof returns -1, otherwise
95 static inline int io__get_hex(struct io *io, __u64 *hex)  in io__get_hex()  argument
101 		int ch = io__get_char(io);  in io__get_hex()
120  * isn't a decimal returns -2, io->eof returns -1, otherwise returns the
124 static inline int io__get_dec(struct io *io, __u64 *dec)  in io__get_dec()  argument
130 		int ch = io__get_char(io);  in io__get_dec()
145 static inline ssize_t io__getdelim(struct io *io, char **line_out, size_t *line_len_out, int delim)  in io__getdelim()  argument
156 		ch = io__get_char(io);  in io__getdelim()
188 static inline ssize_t io__getline(struct io *io, char **line_out, size_t *line_len_out)  in io__getline()  argument
190 	return io__getdelim(io, line_out, line_len_out, /*delim=*/'\n');  in io__getline()