From owner-svn-src-all@FreeBSD.ORG  Fri Jul 20 17:51:20 2012
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id C4B42106566C;
	Fri, 20 Jul 2012 17:51:20 +0000 (UTC)
	(envelope-from trasz@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id AF2EB8FC1C;
	Fri, 20 Jul 2012 17:51:20 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id q6KHpKXR022212;
	Fri, 20 Jul 2012 17:51:20 GMT (envelope-from trasz@svn.freebsd.org)
Received: (from trasz@localhost)
	by svn.freebsd.org (8.14.4/8.14.4/Submit) id q6KHpKiQ022210;
	Fri, 20 Jul 2012 17:51:20 GMT (envelope-from trasz@svn.freebsd.org)
Message-Id: <201207201751.q6KHpKiQ022210@svn.freebsd.org>
From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Fri, 20 Jul 2012 17:51:20 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r238657 - head/sys/geom/part
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
	user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
	<mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
	<mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 20 Jul 2012 17:51:20 -0000

Author: trasz
Date: Fri Jul 20 17:51:20 2012
New Revision: 238657
URL: http://svn.freebsd.org/changeset/base/238657

Log:
  Make it possible to resize opened partitions.
  
  Sponsored by:	FreeBSD Foundation

Modified:
  head/sys/geom/part/g_part.c

Modified: head/sys/geom/part/g_part.c
==============================================================================
--- head/sys/geom/part/g_part.c	Fri Jul 20 16:56:34 2012	(r238656)
+++ head/sys/geom/part/g_part.c	Fri Jul 20 17:51:20 2012	(r238657)
@@ -1257,6 +1257,7 @@ g_part_ctl_resize(struct gctl_req *req, 
 	struct sbuf *sb;
 	quad_t end;
 	int error;
+	off_t mediasize;
 
 	gp = gpp->gpp_geom;
 	G_PART_TRACE((G_T_TOPOLOGY, "%s(%s)", __func__, gp->name));
@@ -1301,8 +1302,11 @@ g_part_ctl_resize(struct gctl_req *req, 
 	pp = entry->gpe_pp;
 	if ((g_debugflags & 16) == 0 &&
 	    (pp->acr > 0 || pp->acw > 0 || pp->ace > 0)) {
-		gctl_error(req, "%d", EBUSY);
-		return (EBUSY);
+		if (entry->gpe_end - entry->gpe_start + 1 > gpp->gpp_size) {
+			/* Deny shrinking of an opened partition. */
+			gctl_error(req, "%d", EBUSY);
+			return (EBUSY);
+		} 
 	}
 
 	error = G_PART_RESIZE(table, entry, gpp);
@@ -1315,8 +1319,9 @@ g_part_ctl_resize(struct gctl_req *req, 
 		entry->gpe_modified = 1;
 
 	/* update mediasize of changed provider */
-	pp->mediasize = (entry->gpe_end - entry->gpe_start + 1) *
+	mediasize = (entry->gpe_end - entry->gpe_start + 1) *
 		pp->sectorsize;
+	g_resize_provider(pp, mediasize);
 
 	/* Provide feedback if so requested. */
 	if (gpp->gpp_parms & G_PART_PARM_OUTPUT) {