Function next_dev_disconnect

common/dev_disconnect.c:15–42

static int dev_disconnect_count, dev_disconnect_len;

static void next_dev_disconnect(void)
{
	int r;
	char *asterisk;

	r = read(dev_disconnect_fd,
		 dev_disconnect_line, sizeof(dev_disconnect_line)-1);
	if (r < 0)
		err(1, "Reading dev_disconnect file");
	if (lseek(dev_disconnect_fd, -r, SEEK_CUR) < 0) {
		err(1, "lseek failure");
	}

	/* Get first line */
	dev_disconnect_line[r] = '\n';
	dev_disconnect_len = strcspn(dev_disconnect_line, "\n");
	dev_disconnect_line[dev_disconnect_len] = '\0';

	asterisk = strchr(dev_disconnect_line, '*');
	if (asterisk) {
		dev_disconnect_count = atoi(asterisk+1);
		if (dev_disconnect_count < 1)
			errx(1, "dev_disconnect invalid count: %s",
			     dev_disconnect_line);
		*asterisk = '\0';
	} else
		dev_disconnect_count = 1;
}

void dev_disconnect_init(int fd)
{