mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-02 04:13:39 +00:00
Replaced bogus macros for dummy devswitch entries by functions.
These functions went away: enosys (hasn't been used for some time) enxio enodev enoioctl (was used only once, actually for a vop) if_tun.c: Continued cleaning up... conf.h: Probably fixed the type of d_reset_t. It is hard to tell the correct type because there are no non-dummy device reset functions. Removed last vestige of ambiguous sleep message strings.
This commit is contained in:
Bruce Evans
parent
bacc8b1678
commit
8b25681eb5
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=12118
@ -42,7 +42,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)conf.c 5.8 (Berkeley) 5/12/91
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* $Id: conf.c,v 1.103 1995/10/28 16:57:52 markm Exp $
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* $Id: conf.c,v 1.104 1995/11/04 13:23:09 bde Exp $
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*/
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#include <sys/param.h>
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@ -54,34 +54,12 @@
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#include <sys/tty.h>
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#include <sys/conf.h>
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/* Bogus defines for compatibility. */
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#define noioc noioctl
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#define nostrat nostrategy
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#define zerosize nopsize
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/* Lots of bogus defines for shorthand purposes */
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#define noopen (d_open_t *)enodev
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#define noclose (d_close_t *)enodev
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#define noread (d_rdwr_t *)enodev
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#define nowrite noread
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#define noioc (d_ioctl_t *)enodev
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#define nostop (d_stop_t *)enodev
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#define noselect (d_select_t *)enodev
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#define nostrat nostrategy
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#define nodump (d_dump_t *)enodev
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#define nodevtotty (d_ttycv_t *)nullop
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#define nxopen (d_open_t *)enxio
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#define nxclose (d_close_t *)enxio
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#define nxread (d_rdwr_t *)enxio
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#define nxwrite nxread
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#define nxstrategy (d_strategy_t *)enxio
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#define nxioctl (d_ioctl_t *)enxio
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#define nxdump (d_dump_t *)enxio
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#define nxstop (d_stop_t *)enxio
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#define nxreset (d_reset_t *)enxio
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#define nxselect (d_select_t *)enxio
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#define nxmmap nommap /* must return -1, not ENXIO */
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#define nxdevtotty (d_ttycv_t *)nullop
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#define zerosize (d_psize_t *)0
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int lkmenodev();
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#define lkmopen (d_open_t *)lkmenodev
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#define lkmclose (d_close_t *)lkmenodev
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@ -307,7 +285,7 @@ int lkmenodev();
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#define swclose noclose
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#define swioctl noioc
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#define swdump nodump
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#define swsize (d_psize_t *)enodev
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#define swsize zerosize
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struct bdevsw bdevsw[] =
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@ -30,7 +30,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: kern_lkm.c,v 1.15 1995/09/08 11:08:34 bde Exp $
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* $Id: kern_lkm.c,v 1.16 1995/10/04 03:42:39 julian Exp $
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*/
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/*
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@ -489,7 +489,7 @@ lkmenodev(dev, flags, fmt, p)
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struct proc *p;
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{
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return(enodev());
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return(ENODEV);
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}
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int
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@ -31,62 +31,15 @@
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* SUCH DAMAGE.
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*
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* @(#)subr_xxx.c 8.1 (Berkeley) 6/10/93
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* $Id: subr_xxx.c,v 1.3 1994/08/02 07:42:36 davidg Exp $
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* $Id: subr_xxx.c,v 1.4 1995/09/10 21:35:51 bde Exp $
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*/
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/*
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* Miscellaneous trivial functions, including many
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* that are often inline-expanded or done in assembler.
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* Miscellaneous trivial functions.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/cpu.h>
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extern int enosys __P((void));
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/*
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* Unsupported device function (e.g. writing to read-only device).
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*/
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int
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enodev()
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{
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return (ENODEV);
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}
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/*
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* Unconfigured device function; driver not configured.
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*/
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int
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enxio()
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{
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return (ENXIO);
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}
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/*
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* Unsupported ioctl function.
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*/
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int
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enoioctl()
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{
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return (ENOTTY);
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}
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/*
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* Unsupported system function.
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* This is used for an otherwise-reasonable operation
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* that is not supported by the current system binary.
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*/
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int
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enosys()
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{
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return (ENOSYS);
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}
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/*
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* Return error for operation not supported
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* on a specific object or file type.
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@ -108,22 +61,103 @@ nullop()
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return (0);
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}
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/*
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* Specific `no' and `null' operations.
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* XXX the general ones are bogus.
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* XXX device functions may belong elsewhere.
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*/
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#include <sys/conf.h>
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/*
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* Unsupported devswitch functions (e.g. for writing to read-only device).
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* XXX may belong elsewhere.
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*/
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int
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noreset(dummy)
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int dummy;
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noopen(dev, flags, fmt, p)
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dev_t dev;
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int flags;
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int fmt;
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struct proc *p;
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{
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return (ENODEV);
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}
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int
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noclose(dev, flags, fmt, p)
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dev_t dev;
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int flags;
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int fmt;
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struct proc *p;
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{
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return (ENODEV);
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}
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int
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noread(dev, uio, ioflag)
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dev_t dev;
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struct uio *uio;
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int ioflag;
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{
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return (ENODEV);
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}
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int
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nowrite(dev, uio, ioflag)
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dev_t dev;
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struct uio *uio;
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int ioflag;
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{
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return (ENODEV);
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}
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int
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noioctl(dev, cmd, data, flags, p)
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dev_t dev;
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int cmd;
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caddr_t data;
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int flags;
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struct proc *p;
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{
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return (ENODEV);
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}
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void
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nostop(tp, rw)
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struct tty *tp;
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int rw;
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{
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}
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int
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noreset(dev)
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dev_t dev;
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{
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printf("noreset(0x%x) called\n", dev);
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return (ENODEV);
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}
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struct tty *
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nodevtotty(dev)
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dev_t dev;
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{
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return (NULL);
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}
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int
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noselect(dev, rw, p)
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dev_t dev;
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int rw;
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struct proc *p;
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{
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/* XXX is this distinguished from 1 for data available? */
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return (ENODEV);
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}
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int
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nommap(dev, offset, nprot)
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dev_t dev;
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@ -135,22 +169,29 @@ nommap(dev, offset, nprot)
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return (-1);
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}
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void
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nostrategy(bp)
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struct buf *bp;
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int
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nodump(dev)
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dev_t dev;
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{
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return (ENODEV);
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}
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/*
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* Null devswitch functions (for when the operation always succeeds).
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* XXX may belong elsewhere.
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* XXX not all are here (e.g., seltrue() isn't).
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*/
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/*
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* XXX this is probably bogus. Any device that uses it isn't checking the
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* minor number.
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*/
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int
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nullopen(dev, flag, mode, p)
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nullopen(dev, flags, fmt, p)
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dev_t dev;
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int flag;
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int mode;
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int flags;
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int fmt;
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struct proc *p;
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{
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@ -158,28 +199,102 @@ nullopen(dev, flag, mode, p)
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}
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int
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nullclose(dev, flag, mode, p)
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nullclose(dev, flags, fmt, p)
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dev_t dev;
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int flag;
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int mode;
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int flags;
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int fmt;
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struct proc *p;
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{
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return (0);
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}
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void
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nullstop(tp, rw)
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struct tty *tp;
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/*
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* Unconfigured devswitch functions (for unconfigured drivers).
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* XXX may belong elsewhere.
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*/
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int
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nxopen(dev, flags, fmt, p)
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dev_t dev;
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int flags;
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int fmt;
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struct proc *p;
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{
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return (ENXIO);
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}
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/*
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* XXX all nx functions except nxopen() should probably go away. They
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* probably can't be called for non-open devices.
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*/
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int
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nxclose(dev, flags, fmt, p)
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dev_t dev;
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int flags;
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int fmt;
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struct proc *p;
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{
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printf("nxclose(0x%x) called\n", dev);
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return (ENXIO);
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}
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int
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nxread(dev, uio, ioflag)
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dev_t dev;
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struct uio *uio;
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int ioflag;
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{
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printf("nxread(0x%x) called\n", dev);
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return (ENXIO);
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}
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int
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nxwrite(dev, uio, ioflag)
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dev_t dev;
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struct uio *uio;
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int ioflag;
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{
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printf("nxwrite(0x%x) called\n", dev);
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return (ENXIO);
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}
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int
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nxioctl(dev, cmd, data, flags, p)
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dev_t dev;
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int cmd;
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caddr_t data;
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int flags;
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struct proc *p;
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{
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printf("nxioctl(0x%x) called\n", dev);
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return (ENXIO);
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}
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int
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nxselect(dev, rw, p)
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dev_t dev;
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int rw;
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struct proc *p;
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{
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printf("nxselect(0x%x) called\n", dev);
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/* XXX is this distinguished from 1 for data available? */
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return (ENXIO);
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}
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int
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nullreset(foo)
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int foo;
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nxdump(dev)
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dev_t dev;
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{
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return (0);
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printf("nxdump(0x%x) called\n", dev);
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return (ENXIO);
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}
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@ -76,17 +76,18 @@ int tunoutput __P((struct ifnet *, struct mbuf *, struct sockaddr *,
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struct rtentry *rt));
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int tunifioctl __P((struct ifnet *, int, caddr_t));
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static struct cdevsw tuncdevsw =
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{ tunopen, tunclose, tunread, tunwrite,
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tunioctl, (d_stop_t *)enodev, (d_reset_t *)nullop, (d_ttycv_t *)enodev,
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tunselect, (d_mmap_t *)enodev, NULL };
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static struct cdevsw tuncdevsw = {
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tunopen, tunclose, tunread, tunwrite,
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tunioctl, nullstop, noreset, nodevtotty,
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tunselect, nommap, nostrategy
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};
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extern dev_t tuncdev;
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static int tuninit __P((int));
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static void
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tunattach(udata)
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void *udata;
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tunattach(dummy)
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void *dummy;
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{
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register int i;
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struct ifnet *ifp;
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_vnops.c 8.5 (Berkeley) 2/13/94
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* $Id: nfs_vnops.c,v 1.26 1995/10/22 09:37:45 davidg Exp $
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* $Id: nfs_vnops.c,v 1.27 1995/10/29 15:33:15 phk Exp $
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*/
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/*
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@ -96,6 +96,8 @@ static int nfsfifo_read __P((struct vop_read_args *));
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static int nfsfifo_write __P((struct vop_write_args *));
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static int nfsspec_close __P((struct vop_close_args *));
|
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static int nfsfifo_close __P((struct vop_close_args *));
|
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static int nfs_ioctl __P((struct vop_ioctl_args *));
|
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static int nfs_select __P((struct vop_select_args *));
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static int nfs_flush __P((struct vnode *,struct ucred *,int,struct proc *,int));
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static int nfs_setattrrpc __P((struct vnode *,struct vattr *,struct ucred *,struct proc *));
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static int nfs_lookup __P((struct vop_lookup_args *));
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@ -3382,3 +3384,26 @@ nfsfifo_close(ap)
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}
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return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap));
|
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}
|
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|
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static int
|
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nfs_ioctl(ap)
|
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struct vop_ioctl_args *ap;
|
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{
|
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|
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/*
|
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* XXX we were once bogusly enoictl() which returned this (ENOTTY).
|
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* Probably we should return ENODEV.
|
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*/
|
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return (ENOTTY);
|
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}
|
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|
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static int
|
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nfs_select(ap)
|
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struct vop_select_args *ap;
|
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{
|
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|
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/*
|
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* We were once bogusly seltrue() which returns 1. Is this right?
|
||||
*/
|
||||
return (1);
|
||||
}
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfsnode.h 8.4 (Berkeley) 2/13/94
|
||||
* $Id: nfsnode.h,v 1.11 1995/07/29 11:42:23 bde Exp $
|
||||
* $Id: nfsnode.h,v 1.12 1995/10/29 15:33:19 phk Exp $
|
||||
*/
|
||||
|
||||
#ifndef _NFS_NFSNODE_H_
|
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@ -169,8 +169,6 @@ int nfs_write __P((struct vop_write_args *));
|
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#define nqnfs_lease_check lease_check
|
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#endif
|
||||
#endif
|
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#define nfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))enoioctl)
|
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#define nfs_select ((int (*) __P((struct vop_select_args *)))seltrue)
|
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#ifdef HAS_VOPREVOKE
|
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#define nfs_revoke vop_revoke
|
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#endif
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs_vnops.c 8.5 (Berkeley) 2/13/94
|
||||
* $Id: nfs_vnops.c,v 1.26 1995/10/22 09:37:45 davidg Exp $
|
||||
* $Id: nfs_vnops.c,v 1.27 1995/10/29 15:33:15 phk Exp $
|
||||
*/
|
||||
|
||||
/*
|
||||
@ -96,6 +96,8 @@ static int nfsfifo_read __P((struct vop_read_args *));
|
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static int nfsfifo_write __P((struct vop_write_args *));
|
||||
static int nfsspec_close __P((struct vop_close_args *));
|
||||
static int nfsfifo_close __P((struct vop_close_args *));
|
||||
static int nfs_ioctl __P((struct vop_ioctl_args *));
|
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static int nfs_select __P((struct vop_select_args *));
|
||||
static int nfs_flush __P((struct vnode *,struct ucred *,int,struct proc *,int));
|
||||
static int nfs_setattrrpc __P((struct vnode *,struct vattr *,struct ucred *,struct proc *));
|
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static int nfs_lookup __P((struct vop_lookup_args *));
|
||||
@ -3382,3 +3384,26 @@ nfsfifo_close(ap)
|
||||
}
|
||||
return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap));
|
||||
}
|
||||
|
||||
static int
|
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nfs_ioctl(ap)
|
||||
struct vop_ioctl_args *ap;
|
||||
{
|
||||
|
||||
/*
|
||||
* XXX we were once bogusly enoictl() which returned this (ENOTTY).
|
||||
* Probably we should return ENODEV.
|
||||
*/
|
||||
return (ENOTTY);
|
||||
}
|
||||
|
||||
static int
|
||||
nfs_select(ap)
|
||||
struct vop_select_args *ap;
|
||||
{
|
||||
|
||||
/*
|
||||
* We were once bogusly seltrue() which returns 1. Is this right?
|
||||
*/
|
||||
return (1);
|
||||
}
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfsnode.h 8.4 (Berkeley) 2/13/94
|
||||
* $Id: nfsnode.h,v 1.11 1995/07/29 11:42:23 bde Exp $
|
||||
* $Id: nfsnode.h,v 1.12 1995/10/29 15:33:19 phk Exp $
|
||||
*/
|
||||
|
||||
#ifndef _NFS_NFSNODE_H_
|
||||
@ -169,8 +169,6 @@ int nfs_write __P((struct vop_write_args *));
|
||||
#define nqnfs_lease_check lease_check
|
||||
#endif
|
||||
#endif
|
||||
#define nfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))enoioctl)
|
||||
#define nfs_select ((int (*) __P((struct vop_select_args *)))seltrue)
|
||||
#ifdef HAS_VOPREVOKE
|
||||
#define nfs_revoke vop_revoke
|
||||
#endif
|
||||
|
||||
@ -44,7 +44,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*End copyright
|
||||
*
|
||||
* $Id: su.c,v 1.4 1995/03/04 20:51:07 dufault Exp $
|
||||
* $Id: su.c,v 1.5 1995/05/03 18:09:20 dufault Exp $
|
||||
*
|
||||
* Tabstops 4
|
||||
*/
|
||||
@ -71,22 +71,6 @@
|
||||
*/
|
||||
#define OLD_DEV(NEWDEV, OLDDEV) ((OLDDEV) | ((NEWDEV) & 0x080000FF))
|
||||
|
||||
/* XXX: These are taken from, and perhaps belong in, conf.c
|
||||
*/
|
||||
#define nxopen (d_open_t *)enxio
|
||||
#define nxclose (d_close_t *)enxio
|
||||
#define nxread (d_rdwr_t *)enxio
|
||||
#define nxwrite nxread
|
||||
#define nxstrategy (d_strategy_t *)enxio
|
||||
#define nxioctl (d_ioctl_t *)enxio
|
||||
#define nxdump (d_dump_t *)enxio
|
||||
#define nxstop (d_stop_t *)enxio
|
||||
#define nxreset (d_reset_t *)enxio
|
||||
#define nxselect (d_select_t *)enxio
|
||||
#define nxmmap (d_mmap_t *)enxio
|
||||
#define nxdevtotty (d_ttycv_t *)nullop
|
||||
#define zerosize (d_psize_t *)0
|
||||
|
||||
/* bnxio, cnxio: non existent device entries
|
||||
*/
|
||||
static struct bdevsw bnxio = {
|
||||
@ -95,7 +79,7 @@ static struct bdevsw bnxio = {
|
||||
nxstrategy,
|
||||
nxioctl,
|
||||
nxdump,
|
||||
zerosize,
|
||||
nxpsize,
|
||||
0
|
||||
};
|
||||
|
||||
|
||||
@ -36,7 +36,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)conf.h 8.3 (Berkeley) 1/21/94
|
||||
* $Id: conf.h,v 1.20 1995/11/05 09:37:28 peter Exp $
|
||||
* $Id: conf.h,v 1.21 1995/11/05 20:25:59 bde Exp $
|
||||
*/
|
||||
|
||||
#ifndef _SYS_CONF_H_
|
||||
@ -63,7 +63,8 @@ typedef int d_read_t __P((dev_t, struct uio *, int));
|
||||
typedef int d_write_t __P((dev_t, struct uio *, int));
|
||||
typedef int d_rdwr_t __P((dev_t, struct uio *, int));
|
||||
typedef void d_stop_t __P((struct tty *, int));
|
||||
typedef int d_reset_t __P((int));
|
||||
typedef int d_reset_t __P((dev_t));
|
||||
typedef struct tty *d_devtotty_t __P((dev_t));
|
||||
typedef int d_select_t __P((dev_t, int, struct proc *));
|
||||
typedef int d_mmap_t __P((dev_t, int, int));
|
||||
typedef struct tty * d_ttycv_t __P((dev_t));
|
||||
@ -99,7 +100,7 @@ struct cdevsw {
|
||||
d_rdwr_t *d_write;
|
||||
d_ioctl_t *d_ioctl;
|
||||
d_stop_t *d_stop;
|
||||
d_reset_t *d_reset;
|
||||
d_reset_t *d_reset; /* XXX not used */
|
||||
d_ttycv_t *d_devtotty;
|
||||
d_select_t *d_select;
|
||||
d_mmap_t *d_mmap;
|
||||
@ -108,10 +109,6 @@ struct cdevsw {
|
||||
|
||||
#ifdef KERNEL
|
||||
extern struct cdevsw cdevsw[];
|
||||
|
||||
/* symbolic sleep message strings */
|
||||
extern char devopn[], devio[], devwait[], devin[], devout[];
|
||||
extern char devioc[], devcls[];
|
||||
#endif
|
||||
|
||||
struct linesw {
|
||||
@ -145,19 +142,48 @@ struct swdevt {
|
||||
#define sw_freed sw_flags /* XXX compat */
|
||||
|
||||
#ifdef KERNEL
|
||||
d_open_t noopen;
|
||||
d_close_t noclose;
|
||||
d_read_t noread;
|
||||
d_write_t nowrite;
|
||||
d_ioctl_t noioctl;
|
||||
d_stop_t nostop;
|
||||
d_reset_t noreset;
|
||||
d_devtotty_t nodevtotty;
|
||||
d_select_t noselect;
|
||||
d_mmap_t nommap;
|
||||
d_strategy_t nostrategy;
|
||||
|
||||
/*
|
||||
* XXX d_strategy seems to be unused for cdevs that aren't associated with
|
||||
* bdevs and called without checking for it being non-NULL for bdevs.
|
||||
*/
|
||||
#define nostrategy ((d_strategy_t *)NULL)
|
||||
|
||||
d_dump_t nodump;
|
||||
|
||||
/*
|
||||
* nopsize is little used, so not worth having dummy functions for.
|
||||
*/
|
||||
#define nopsize ((d_psize_t *)NULL)
|
||||
|
||||
d_open_t nullopen;
|
||||
d_close_t nullclose;
|
||||
d_stop_t nullstop;
|
||||
d_reset_t nullreset;
|
||||
/*
|
||||
* XXX d_strategy seems to be unused for cdevs and called without checking
|
||||
* for it being non-NULL for bdevs.
|
||||
*/
|
||||
#define nullstrategy ((d_strategy *)NULL)
|
||||
#define nullstop nostop /* one void return is as good as another */
|
||||
#define nullreset noreset /* one unused function is as good as another */
|
||||
|
||||
d_open_t nxopen;
|
||||
d_close_t nxclose;
|
||||
d_read_t nxread;
|
||||
d_write_t nxwrite;
|
||||
d_ioctl_t nxioctl;
|
||||
#define nxstop nostop /* one void return is as good as another */
|
||||
#define nxreset noreset /* one unused function is as good as another */
|
||||
#define nxdevtotty nodevtotty /* one NULL return is as good as another */
|
||||
d_select_t nxselect;
|
||||
#define nxmmap nommap /* one -1 return is as good as another */
|
||||
#define nxstrategy nostrategy /* one NULL value is as good as another */
|
||||
d_dump_t nxdump;
|
||||
#define nxpsize nopsize /* one NULL value is as good as another */
|
||||
|
||||
l_read_t l_noread;
|
||||
l_write_t l_nowrite;
|
||||
|
||||
@ -36,7 +36,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)conf.h 8.3 (Berkeley) 1/21/94
|
||||
* $Id: conf.h,v 1.20 1995/11/05 09:37:28 peter Exp $
|
||||
* $Id: conf.h,v 1.21 1995/11/05 20:25:59 bde Exp $
|
||||
*/
|
||||
|
||||
#ifndef _SYS_CONF_H_
|
||||
@ -63,7 +63,8 @@ typedef int d_read_t __P((dev_t, struct uio *, int));
|
||||
typedef int d_write_t __P((dev_t, struct uio *, int));
|
||||
typedef int d_rdwr_t __P((dev_t, struct uio *, int));
|
||||
typedef void d_stop_t __P((struct tty *, int));
|
||||
typedef int d_reset_t __P((int));
|
||||
typedef int d_reset_t __P((dev_t));
|
||||
typedef struct tty *d_devtotty_t __P((dev_t));
|
||||
typedef int d_select_t __P((dev_t, int, struct proc *));
|
||||
typedef int d_mmap_t __P((dev_t, int, int));
|
||||
typedef struct tty * d_ttycv_t __P((dev_t));
|
||||
@ -99,7 +100,7 @@ struct cdevsw {
|
||||
d_rdwr_t *d_write;
|
||||
d_ioctl_t *d_ioctl;
|
||||
d_stop_t *d_stop;
|
||||
d_reset_t *d_reset;
|
||||
d_reset_t *d_reset; /* XXX not used */
|
||||
d_ttycv_t *d_devtotty;
|
||||
d_select_t *d_select;
|
||||
d_mmap_t *d_mmap;
|
||||
@ -108,10 +109,6 @@ struct cdevsw {
|
||||
|
||||
#ifdef KERNEL
|
||||
extern struct cdevsw cdevsw[];
|
||||
|
||||
/* symbolic sleep message strings */
|
||||
extern char devopn[], devio[], devwait[], devin[], devout[];
|
||||
extern char devioc[], devcls[];
|
||||
#endif
|
||||
|
||||
struct linesw {
|
||||
@ -145,19 +142,48 @@ struct swdevt {
|
||||
#define sw_freed sw_flags /* XXX compat */
|
||||
|
||||
#ifdef KERNEL
|
||||
d_open_t noopen;
|
||||
d_close_t noclose;
|
||||
d_read_t noread;
|
||||
d_write_t nowrite;
|
||||
d_ioctl_t noioctl;
|
||||
d_stop_t nostop;
|
||||
d_reset_t noreset;
|
||||
d_devtotty_t nodevtotty;
|
||||
d_select_t noselect;
|
||||
d_mmap_t nommap;
|
||||
d_strategy_t nostrategy;
|
||||
|
||||
/*
|
||||
* XXX d_strategy seems to be unused for cdevs that aren't associated with
|
||||
* bdevs and called without checking for it being non-NULL for bdevs.
|
||||
*/
|
||||
#define nostrategy ((d_strategy_t *)NULL)
|
||||
|
||||
d_dump_t nodump;
|
||||
|
||||
/*
|
||||
* nopsize is little used, so not worth having dummy functions for.
|
||||
*/
|
||||
#define nopsize ((d_psize_t *)NULL)
|
||||
|
||||
d_open_t nullopen;
|
||||
d_close_t nullclose;
|
||||
d_stop_t nullstop;
|
||||
d_reset_t nullreset;
|
||||
/*
|
||||
* XXX d_strategy seems to be unused for cdevs and called without checking
|
||||
* for it being non-NULL for bdevs.
|
||||
*/
|
||||
#define nullstrategy ((d_strategy *)NULL)
|
||||
#define nullstop nostop /* one void return is as good as another */
|
||||
#define nullreset noreset /* one unused function is as good as another */
|
||||
|
||||
d_open_t nxopen;
|
||||
d_close_t nxclose;
|
||||
d_read_t nxread;
|
||||
d_write_t nxwrite;
|
||||
d_ioctl_t nxioctl;
|
||||
#define nxstop nostop /* one void return is as good as another */
|
||||
#define nxreset noreset /* one unused function is as good as another */
|
||||
#define nxdevtotty nodevtotty /* one NULL return is as good as another */
|
||||
d_select_t nxselect;
|
||||
#define nxmmap nommap /* one -1 return is as good as another */
|
||||
#define nxstrategy nostrategy /* one NULL value is as good as another */
|
||||
d_dump_t nxdump;
|
||||
#define nxpsize nopsize /* one NULL value is as good as another */
|
||||
|
||||
l_read_t l_noread;
|
||||
l_write_t l_nowrite;
|
||||
|
||||
@ -36,7 +36,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)device_pager.c 8.1 (Berkeley) 6/11/93
|
||||
* $Id: device_pager.c,v 1.11 1995/05/30 08:15:46 rgrimes Exp $
|
||||
* $Id: device_pager.c,v 1.12 1995/07/13 08:48:10 davidg Exp $
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
@ -94,7 +94,7 @@ dev_pager_alloc(handle, size, prot, foff)
|
||||
*/
|
||||
dev = (dev_t) (u_long) handle;
|
||||
mapfunc = cdevsw[major(dev)].d_mmap;
|
||||
if (mapfunc == NULL || mapfunc == enodev || mapfunc == nullop)
|
||||
if (mapfunc == NULL || mapfunc == nullop)
|
||||
return (NULL);
|
||||
|
||||
/*
|
||||
@ -186,7 +186,7 @@ dev_pager_getpages(object, m, count, reqpage)
|
||||
prot = PROT_READ; /* XXX should pass in? */
|
||||
mapfunc = cdevsw[major(dev)].d_mmap;
|
||||
|
||||
if (mapfunc == NULL || mapfunc == enodev || mapfunc == nullop)
|
||||
if (mapfunc == NULL || mapfunc == nullop)
|
||||
panic("dev_pager_getpage: no map function");
|
||||
|
||||
paddr = pmap_phys_address((*mapfunc) ((dev_t) dev, (int) offset, prot));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user