SRI-NOSC/h/filsys.h

/*
 * Definition of the unix super block.
 * The root super block is allocated and
 * read in iinit/alloc.c. Subsequently
 * a super block is allocated and read
 * with each mount (smount/sys3.c) and
 * released with unmount (sumount/sys3.c).
 * A disk block is ripped off for storage.
 * See alloc.c for general alloc/free
 * routines for free list and I list.
 */
struct	filsys
{
	int	s_isize;	/* size in blocks of I list */
	char	*s_fsize;	/* size in blocks of entire volume */
	int	s_nfree;	/* number of in core free blocks (0-100) */
	int	s_free[100];	/* in core free blocks */
	int	s_ninode;	/* number of in core I nodes (0-100) */
	int	s_inode[100];	/* in core free I nodes */
	char	s_flock;	/* lock during free list manipulation */
	char	s_ilock;	/* lock during I list manipulation */
	char	s_fmod;		/* super block modified flag */
	char	s_ronly;	/* mounted read-only flag */
	int	s_time[2];	/* current date of last update */
	int	pad[50];
/*PWB	int	pad[40];
/*PWB	char	*s_tfree;	/* total free blocks available */
/*PWB	char	*s_tinode;	/* total free inodes available */
/*PWB	char	s_fname[6];	/* name of the file system */
/*PWB	char	s_fpack[6];	/* name of the pack (pack ID) */
};