386BSD 0.1 development

[unix-history] / usr / src / sys.386bsd / isofs / isofs_node.h

struct iso_node {
       struct  iso_node *i_chain[2]; /* hash chain, MUST be first */
       struct  vnode *i_vnode; /* vnode associated with this inode */
       struct  vnode *i_devvp; /* vnode for block I/O */
       u_long  i_flag;         /* see below */
       dev_t   i_dev;          /* device where inode resides */
       ino_t   i_number;       /* the identity of the inode */
       struct  iso_mnt *i_mnt; /* filesystem associated with this inode */
       struct  lockf *i_lockf; /* head of byte-level lock list */
       long    i_diroff;       /* offset in dir, where we found last entry */
       off_t   i_endoff;       /* end of useful stuff in directory */
       long    i_spare0;
       long    i_spare1;


       int iso_reclen;
       int iso_extlen;
       int iso_extent;
       int i_size;
       unsigned char iso_time[7];
       int iso_flags;
       int iso_unit_size;
       int iso_interleave_gap;
       int iso_volume_seq;
       int iso_namelen;
};

#define i_forw          i_chain[0]
#define i_back          i_chain[1]

/* flags */
#define ILOCKED         0x0001          /* inode is locked */
#define IWANT           0x0002          /* some process waiting on lock */
#define IACC            0x0020          /* inode access time to be updated */

#define VTOI(vp) ((struct iso_node *)(vp)->v_data)
#define ITOV(ip) ((ip)->i_vnode)

#define ISO_ILOCK(ip)   iso_ilock(ip)
#define ISO_IUNLOCK(ip) iso_iunlock(ip)

#define VT_ISOFS (VT_MFS+1)

/*
* Prototypes for ISOFS vnode operations
*/
int isofs_lookup __P((struct vnode *vp, struct nameidata *ndp, struct proc *p));
int isofs_open __P((struct vnode *vp, int mode, struct ucred *cred,
       struct proc *p));
int isofs_close __P((struct vnode *vp, int fflag, struct ucred *cred,
       struct proc *p));
int isofs_access __P((struct vnode *vp, int mode, struct ucred *cred,
       struct proc *p));
int isofs_getattr __P((struct vnode *vp, struct vattr *vap, struct ucred *cred,
       struct proc *p));
int isofs_read __P((struct vnode *vp, struct uio *uio, int ioflag,
       struct ucred *cred));
int isofs_ioctl __P((struct vnode *vp, int command, caddr_t data, int fflag,
       struct ucred *cred, struct proc *p));
int isofs_select __P((struct vnode *vp, int which, int fflags, struct ucred *cred,
       struct proc *p));
int isofs_mmap __P((struct vnode *vp, int fflags, struct ucred *cred,
       struct proc *p));
int isofs_seek __P((struct vnode *vp, off_t oldoff, off_t newoff,
       struct ucred *cred));
int isofs_readdir __P((struct vnode *vp, struct uio *uio, struct ucred *cred,
       int *eofflagp));
int isofs_abortop __P((struct nameidata *ndp));
int isofs_inactive __P((struct vnode *vp, struct proc *p));
int isofs_reclaim __P((struct vnode *vp));
int isofs_lock __P((struct vnode *vp));
int isofs_unlock __P((struct vnode *vp));
int isofs_strategy __P((struct buf *bp));
int isofs_print __P((struct vnode *vp));
int isofs_islocked __P((struct vnode *vp));