add prototypes for special device vnode ops

[unix-history] / usr / src / sys / miscfs / specfs / specdev.h

/*
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*
*      @(#)specdev.h   7.3 (Berkeley) %G%
*/

/*
* This structure defines the information maintained about
* special devices. It is allocated in checkalias and freed
* in vgone.
*/
struct specinfo {
       struct  vnode **si_hashchain;
       struct  vnode *si_specnext;
       long    si_flags;
       dev_t   si_rdev;
};
/*
* Exported shorthand
*/
#define v_rdev v_specinfo->si_rdev
#define v_hashchain v_specinfo->si_hashchain
#define v_specnext v_specinfo->si_specnext
#define v_specflags v_specinfo->si_flags

/*
* Flags for specinfo
*/
#define SI_MOUNTEDON    0x0001  /* block special device is mounted on */

/*
* Special device management
*/
#define SPECHSZ 64
#if     ((SPECHSZ&(SPECHSZ-1)) == 0)
#define SPECHASH(rdev)  (((rdev>>5)+(rdev))&(SPECHSZ-1))
#else
#define SPECHASH(rdev)  (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
#endif

struct vnode *speclisth[SPECHSZ];

/*
* Prototypes for special file operations on vnodes.
*/
int     spec_badop(),
       spec_ebadf();

int     spec_lookup __P((
               struct vnode *vp,
               struct nameidata *ndp,
               struct proc *p));
#define spec_create ((int (*) __P(( \
               struct nameidata *ndp, \
               struct vattr *vap, \
               struct proc *p))) spec_badop)
#define spec_mknod ((int (*) __P(( \
               struct nameidata *ndp, \
               struct vattr *vap, \
               struct ucred *cred, \
               struct proc *p))) spec_badop)
int     spec_open __P((
               struct vnode *vp,
               int mode,
               struct ucred *cred,
               struct proc *p));
int     spec_close __P((
               struct vnode *vp,
               int fflag,
               struct ucred *cred,
               struct proc *p));
#define spec_access ((int (*) __P(( \
               struct vnode *vp, \
               int mode, \
               struct ucred *cred, \
               struct proc *p))) spec_ebadf)
#define spec_getattr ((int (*) __P(( \
               struct vnode *vp, \
               struct vattr *vap, \
               struct ucred *cred, \
               struct proc *p))) spec_ebadf)
#define spec_setattr ((int (*) __P(( \
               struct vnode *vp, \
               struct vattr *vap, \
               struct ucred *cred, \
               struct proc *p))) spec_ebadf)
int     spec_read __P((
               struct vnode *vp,
               struct uio *uio,
               int ioflag,
               struct ucred *cred));
int     spec_write __P((
               struct vnode *vp,
               struct uio *uio,
               int ioflag,
               struct ucred *cred));
int     spec_ioctl __P((
               struct vnode *vp,
               int command,
               caddr_t data,
               int fflag,
               struct ucred *cred,
               struct proc *p));
int     spec_select __P((
               struct vnode *vp,
               int which,
               int fflags,
               struct ucred *cred,
               struct proc *p));
#define spec_mmap ((int (*) __P(( \
               struct vnode *vp, \
               int fflags, \
               struct ucred *cred, \
               struct proc *p))) spec_badop)
#define spec_fsync ((int (*) __P(( \
               struct vnode *vp, \
               int fflags, \
               struct ucred *cred, \
               int waitfor, \
               struct proc *p))) nullop)
#define spec_seek ((int (*) __P(( \
               struct vnode *vp, \
               off_t oldoff, \
               off_t newoff, \
               struct ucred *cred))) spec_badop)
#define spec_remove ((int (*) __P(( \
               struct nameidata *ndp, \
               struct proc *p))) spec_badop)
#define spec_link ((int (*) __P(( \
               struct vnode *vp, \
               struct nameidata *ndp, \
               struct proc *p))) spec_badop)
#define spec_rename ((int (*) __P(( \
               struct nameidata *fndp, \
               struct nameidata *tdnp, \
               struct proc *p))) spec_badop)
#define spec_mkdir ((int (*) __P(( \
               struct nameidata *ndp, \
               struct vattr *vap, \
               struct proc *p))) spec_badop)
#define spec_rmdir ((int (*) __P(( \
               struct nameidata *ndp, \
               struct proc *p))) spec_badop)
#define spec_symlink ((int (*) __P(( \
               struct nameidata *ndp, \
               struct vattr *vap, \
               char *target, \
               struct proc *p))) spec_badop)
#define spec_readdir ((int (*) __P(( \
               struct vnode *vp, \
               struct uio *uio, \
               struct ucred *cred, \
               int *eofflagp))) spec_badop)
#define spec_readlink ((int (*) __P(( \
               struct vnode *vp, \
               struct uio *uio, \
               struct ucred *cred))) spec_badop)
#define spec_abortop ((int (*) __P(( \
               struct nameidata *ndp))) spec_badop)
#define spec_inactive ((int (*) __P(( \
               struct vnode *vp, \
               struct proc *p))) nullop)
#define spec_reclaim ((int (*) __P(( \
               struct vnode *vp))) nullop)
int     spec_lock __P((
               struct vnode *vp));
int     spec_unlock __P((
               struct vnode *vp));
int     spec_bmap __P((
               struct vnode *vp,
               daddr_t bn,
               struct vnode **vpp,
               daddr_t *bnp));
int     spec_strategy __P((
               struct buf *bp));
int     spec_print __P((
               struct vnode *vp));
#define spec_islocked ((int (*) __P(( \
               struct vnode *vp))) nullop)
int     spec_advlock __P((
               struct vnode *vp,
               caddr_t id,
               int op,
               struct flock *fl,
               int flags));