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Add stubs for previously-undefined tzwrite(), tzread(), since the new

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pmax conf.c references them.  A cut-and-paste job from the pmax
rzwrite() and rzread().  tzwrite() and tzread() are utterly untested.
tzwrite() should also check for write-protect, or handle writes to a
write-protected tape gracefully.
This commit is contained in:
jonathan 1995-07-12 07:24:27 +00:00
parent bc6a795fd3
commit eac9104365
1 changed files with 40 additions and 1 deletions
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41
sys/arch/pmax/dev/tz.c
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@ -1,4 +1,4 @@
/* $NetBSD: tz.c,v 1.4 1994/10/26 21:09:23 cgd Exp $ */
/* $NetBSD: tz.c,v 1.5 1995/07/12 07:24:27 jonathan Exp $ */
/*
* Copyright (c) 1992, 1993
@ -105,6 +105,8 @@ struct tz_softc {
int tzdebug = 0;
#endif
void tzstrategy __P((register struct buf *bp));
/*
* Test to see if device is present.
* Return true if found and initialized ok.
@ -696,6 +698,43 @@ tzclose(dev, flag)
return (error);
}
int
tzread(dev, uio)
dev_t dev;
struct uio *uio;
{
register struct tz_softc *sc = &tz_softc[tzunit(dev)];
/*XXX*/ /* check for hardware write-protect? */
#if 0
if (sc->sc_type == SCSI_ROM_TYPE)
return (EROFS);
if (sc->sc_format_pid && sc->sc_format_pid != curproc->p_pid)
return (EPERM);
#endif
return (physio(tzstrategy, (struct buf *)0, dev,
B_READ, minphys, uio));
}
int
tzwrite(dev, uio)
dev_t dev;
struct uio *uio;
{
register struct tz_softc *sc = &tz_softc[tzunit(dev)];
#if 0
if (sc->sc_format_pid && sc->sc_format_pid != curproc->p_pid)
return (EPERM);
#endif
return (physio(tzstrategy, (struct buf *)0, dev,
B_WRITE, minphys, uio));
}
int
tzioctl(dev, cmd, data, flag)
dev_t dev;
int cmd;