Date: Sat, 7 Jul 2012 22:22:14 +0000 (UTC) From: Edward Tomasz Napierala <trasz@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r238219 - head/sys/geom/nop Message-ID: <201207072222.q67MMEYE093830@svn.freebsd.org>
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Author: trasz Date: Sat Jul 7 22:22:13 2012 New Revision: 238219 URL: http://svn.freebsd.org/changeset/base/238219 Log: Add trivial resize handling to gnop(8). Reviewed by: mav Sponsored by: FreeBSD Foundation Modified: head/sys/geom/nop/g_nop.c head/sys/geom/nop/g_nop.h Modified: head/sys/geom/nop/g_nop.c ============================================================================== --- head/sys/geom/nop/g_nop.c Sat Jul 7 22:20:47 2012 (r238218) +++ head/sys/geom/nop/g_nop.c Sat Jul 7 22:22:13 2012 (r238219) @@ -72,6 +72,30 @@ g_nop_orphan(struct g_consumer *cp) } static void +g_nop_resize(struct g_consumer *cp) +{ + struct g_nop_softc *sc; + struct g_geom *gp; + struct g_provider *pp; + off_t size; + + g_topology_assert(); + + gp = cp->geom; + sc = gp->softc; + + if (sc->sc_explicitsize != 0) + return; + if (cp->provider->mediasize < sc->sc_offset) { + g_nop_destroy(gp, 1); + return; + } + size = cp->provider->mediasize - sc->sc_offset; + LIST_FOREACH(pp, &gp->provider, provider) + g_resize_provider(pp, size); +} + +static void g_nop_start(struct bio *bp) { struct g_nop_softc *sc; @@ -146,6 +170,7 @@ g_nop_create(struct gctl_req *req, struc struct g_consumer *cp; char name[64]; int error; + off_t explicitsize; g_topology_assert(); @@ -165,6 +190,7 @@ g_nop_create(struct gctl_req *req, struc gctl_error(req, "Invalid offset for provider %s.", pp->name); return (EINVAL); } + explicitsize = size; if (size == 0) size = pp->mediasize - offset; if (offset + size > pp->mediasize) { @@ -192,6 +218,7 @@ g_nop_create(struct gctl_req *req, struc gp = g_new_geomf(mp, name); sc = g_malloc(sizeof(*sc), M_WAITOK); sc->sc_offset = offset; + sc->sc_explicitsize = explicitsize; sc->sc_error = ioerror; sc->sc_rfailprob = rfailprob; sc->sc_wfailprob = wfailprob; @@ -202,6 +229,7 @@ g_nop_create(struct gctl_req *req, struc gp->softc = sc; gp->start = g_nop_start; gp->orphan = g_nop_orphan; + gp->resize = g_nop_resize; gp->access = g_nop_access; gp->dumpconf = g_nop_dumpconf; Modified: head/sys/geom/nop/g_nop.h ============================================================================== --- head/sys/geom/nop/g_nop.h Sat Jul 7 22:20:47 2012 (r238218) +++ head/sys/geom/nop/g_nop.h Sat Jul 7 22:22:13 2012 (r238219) @@ -57,6 +57,7 @@ struct g_nop_softc { int sc_error; off_t sc_offset; + off_t sc_explicitsize; u_int sc_rfailprob; u_int sc_wfailprob; uintmax_t sc_reads;
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