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) {
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