Nsys/sys/nsys/filsys.h

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including files from this version of Unix.

struct	filsys
{
	int	s_isize;
	int	s_fsize;
	int	s_nfree;
	int	s_free[100];
	int	s_ninode;
	int	s_inode[100];
	char	s_flock;
	char	s_ilock;
	char	s_fmod;
	int	s_time[2];
};