doc/Host-tools-overview: tiffs-mkfs description updated The first version of tiffs-mkfs did not include a journal file in the created FFS, expecting the firmware to create it on first boot. All historical firmwares prior to a recent FC fix (2020-05) contain a bug in that code path, thus images made with the first version of tiffs-mkfs were only acceptable to very recent FC firmwares. tiffs-mkfs has now been extended to include an empty journal in the created FFS, thus the restriction of working with recent fw only has been lifted.

/*
 * This module contains the set_serial_nonblock() function.
 */

#include <sys/types.h>
#include <sys/ioctl.h>
#include <unistd.h>

extern int target_fd;

set_serial_nonblock(state)
	int state;
{
	ioctl(target_fd, FIONBIO, &state);
}