diff options
Diffstat (limited to 'sys/geom')
| -rw-r--r-- | sys/geom/part/g_part.c | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/sys/geom/part/g_part.c b/sys/geom/part/g_part.c index 437914a..aa5444e 100644 --- a/sys/geom/part/g_part.c +++ b/sys/geom/part/g_part.c @@ -231,6 +231,48 @@ g_part_geometry(struct g_part_table *table, struct g_consumer *cp, } } +static int +g_part_check_integrity(struct g_part_table *table, struct g_consumer *cp) +{ + struct g_part_entry *e1, *e2; + struct g_provider *pp; + + pp = cp->provider; + if (table->gpt_first > table->gpt_last || + table->gpt_last > pp->mediasize / pp->sectorsize - 1) + goto fail; + + LIST_FOREACH(e1, &table->gpt_entry, gpe_entry) { + if (e1->gpe_deleted || e1->gpe_internal) + continue; + if (e1->gpe_start < table->gpt_first || + e1->gpe_start > table->gpt_last || + e1->gpe_end < e1->gpe_start || + e1->gpe_end > table->gpt_last) + goto fail; + e2 = e1; + while ((e2 = LIST_NEXT(e2, gpe_entry)) != NULL) { + if (e2->gpe_deleted || e2->gpe_internal) + continue; + if (e1->gpe_start >= e2->gpe_start && + e1->gpe_start <= e2->gpe_end) + goto fail; + if (e1->gpe_end >= e2->gpe_start && + e1->gpe_end <= e2->gpe_end) + goto fail; + if (e1->gpe_start < e2->gpe_start && + e1->gpe_end > e2->gpe_end) + goto fail; + } + } + return (0); +fail: + if (bootverbose) + printf("GEOM_PART: integrity check failed (%s, %s)\n", + pp->name, table->gpt_scheme->name); + return (EINVAL); +} + struct g_part_entry * g_part_new_entry(struct g_part_table *table, int index, quad_t start, quad_t end) @@ -1310,9 +1352,11 @@ g_part_ctl_undo(struct gctl_req *req, struct g_part_parms *gpp) error = G_PART_READ(table, cp); if (error) goto fail; + error = g_part_check_integrity(table, cp); + if (error) + goto fail; g_topology_lock(); - LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) { if (!entry->gpe_internal) g_part_new_provider(gp, table, entry); @@ -1773,6 +1817,9 @@ g_part_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) error = G_PART_READ(table, cp); if (error) goto fail; + error = g_part_check_integrity(table, cp); + if (error) + goto fail; g_topology_lock(); LIST_FOREACH(entry, &table->gpt_entry, gpe_entry) { |
