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Implement DIOCGSTRATEGY and DIOCSSTRATEGY for dkctl <foo0> strategy.

This commit is contained in:
xtraeme 2007-11-12 14:45:23 +00:00
parent 70981e62b1
commit 4ffff27911
1 changed files with 40 additions and 3 deletions
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43
sys/dev/ld.c
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@ -1,4 +1,4 @@
/* $NetBSD: ld.c,v 1.50 2007/10/08 16:41:10 ad Exp $ */
/* $NetBSD: ld.c,v 1.51 2007/11/12 14:45:23 xtraeme Exp $ */
/*-
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@ -41,7 +41,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ld.c,v 1.50 2007/10/08 16:41:10 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: ld.c,v 1.51 2007/11/12 14:45:23 xtraeme Exp $");
#include "rnd.h"
@ -383,7 +383,7 @@ static int
ldioctl(dev_t dev, u_long cmd, void *addr, int32_t flag, struct lwp *l)
{
struct ld_softc *sc;
int part, unit, error;
int s, part, unit, error;
#ifdef __HAVE_OLD_DISKLABEL
struct disklabel newlabel;
#endif
@ -529,7 +529,44 @@ ldioctl(dev_t dev, u_long cmd, void *addr, int32_t flag, struct lwp *l)
return (dkwedge_list(&sc->sc_dk, dkwl, l));
}
case DIOCGSTRATEGY:
{
struct disk_strategy *dks = (void *)addr;
s = splbio();
strlcpy(dks->dks_name, bufq_getstrategyname(sc->sc_bufq),
sizeof(dks->dks_name));
splx(s);
dks->dks_paramlen = 0;
return 0;
}
case DIOCSSTRATEGY:
{
struct disk_strategy *dks = (void *)addr;
struct bufq_state *new, *old;
if ((flag & FWRITE) == 0)
return EPERM;
if (dks->dks_param != NULL)
return EINVAL;
dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */
error = bufq_alloc(&new, dks->dks_name,
BUFQ_EXACT|BUFQ_SORT_RAWBLOCK);
if (error)
return error;
s = splbio();
old = sc->sc_bufq;
bufq_move(new, old);
sc->sc_bufq = new;
splx(s);
bufq_free(old);
return 0;
}
default:
error = ENOTTY;
break;