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Fix undo for schemes that have internal partitions. Internal partitions

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do not constitute user-visible or active partitions and as such should
not prevent undoing pending operations.

While here, initialize the last usable sector for the placeholder geom
based on the null scheme, created to allow undoing the destruction of
a scheme. This gives consistent output with "gpart show".

Based on a patch from:	"Andrey V. Elsukov" <bu7cher@yandex.ru>
This commit is contained in:
Marcel Moolenaar 2010-04-25 00:54:11 +00:00
parent 7d04a6be12
commit 6f702278e6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=207178
1 changed files with 14 additions and 1 deletions
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15
sys/geom/part/g_part.c
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@ -855,7 +855,9 @@ g_part_ctl_delete(struct gctl_req *req, struct g_part_parms *gpp)
static int
g_part_ctl_destroy(struct gctl_req *req, struct g_part_parms *gpp)
{
struct g_consumer *cp;
struct g_geom *gp;
struct g_provider *pp;
struct g_part_entry *entry;
struct g_part_table *null, *table;
struct sbuf *sb;
@ -885,6 +887,11 @@ g_part_ctl_destroy(struct gctl_req *req, struct g_part_parms *gpp)
null->gpt_gp = gp;
null->gpt_scheme = &g_part_null_scheme;
LIST_INIT(&null->gpt_entry);
cp = LIST_FIRST(&gp->consumer);
pp = cp->provider;
null->gpt_last = pp->mediasize / pp->sectorsize - 1;
null->gpt_depth = table->gpt_depth;
null->gpt_opened = table->gpt_opened;
null->gpt_smhead = table->gpt_smhead;
@ -1141,10 +1148,16 @@ g_part_ctl_undo(struct gctl_req *req, struct g_part_parms *gpp)
table->gpt_created) ? 1 : 0;
if (reprobe) {
if (!LIST_EMPTY(&table->gpt_entry)) {
LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) {
if (entry->gpe_internal)
continue;
error = EBUSY;
goto fail;
}
while ((entry = LIST_FIRST(&table->gpt_entry)) != NULL) {
LIST_REMOVE(entry, gpe_entry);
g_free(entry);
}
error = g_part_probe(gp, cp, table->gpt_depth);
if (error) {
g_topology_lock();