Function get_packet_data

pkt-line.c:339–375

}

static int get_packet_data(int fd, char **src_buf, size_t *src_size,
			   void *dst, size_t size, int options)
{
	size_t bytes_read;

	if (fd >= 0 && src_buf && *src_buf)
		BUG("multiple sources given to packet_read");

	/* Read up to "size" bytes from our source, whatever it is. */
	if (src_buf && *src_buf) {
		bytes_read = size < *src_size ? size : *src_size;
		memcpy(dst, *src_buf, bytes_read);
		*src_buf += bytes_read;
		*src_size -= bytes_read;
	} else {
		ssize_t ret = read_in_full(fd, dst, size);
		if (ret < 0) {
			if (options & PACKET_READ_GENTLE_ON_READ_ERROR)
				return error_errno(_("read error"));
			die_errno(_("read error"));
		}

		bytes_read = (size_t) ret;
	}

	/* And complain if we didn't get enough bytes to satisfy the read. */
	if (bytes_read != size) {
		if (options & PACKET_READ_GENTLE_ON_EOF)
			return -1;

		if (options & PACKET_READ_GENTLE_ON_READ_ERROR)
			return error(_("the remote end hung up unexpectedly"));
		die(_("the remote end hung up unexpectedly"));
	}

	return 0;
}

int packet_length(const char lenbuf_hex[4], size_t size)
{