#include <linux/mutex.h>
#include <asm/atomic.h>
+#define DM_MSG_PREFIX "table"
+
#define MAX_DEPTH 16
#define NODE_SIZE L1_CACHE_BYTES
#define KEYS_PER_NODE (NODE_SIZE / sizeof(sector_t))
return 0;
}
+int dm_create_error_table(struct dm_table **result, struct mapped_device *md)
+{
+ struct dm_table *t;
+ sector_t dev_size = 1;
+ int r;
+
+ /*
+ * Find current size of device.
+ * Default to 1 sector if inactive.
+ */
+ t = dm_get_table(md);
+ if (t) {
+ dev_size = dm_table_get_size(t);
+ dm_table_put(t);
+ }
+
+ r = dm_table_create(&t, FMODE_READ, 1, md);
+ if (r)
+ return r;
+
+ r = dm_table_add_target(t, "error", 0, dev_size, NULL);
+ if (r)
+ goto out;
+
+ r = dm_table_complete(t);
+ if (r)
+ goto out;
+
+ *result = t;
+
+out:
+ if (r)
+ dm_table_put(t);
+
+ return r;
+}
+EXPORT_SYMBOL_GPL(dm_create_error_table);
+
static void free_devices(struct list_head *devices)
{
struct list_head *tmp, *next;
unsigned array_size = 0;
*argc = 0;
+
+ if (!input) {
+ *argvp = NULL;
+ return 0;
+ }
+
argv = realloc_argv(&array_size, argv);
if (!argv)
return -ENOMEM;
memset(tgt, 0, sizeof(*tgt));
if (!len) {
- tgt->error = "zero-length target";
- DMERR("%s", tgt->error);
+ DMERR("%s: zero-length target", dm_device_name(t->md));
return -EINVAL;
}
tgt->type = dm_get_target_type(type);
if (!tgt->type) {
- tgt->error = "unknown target type";
- DMERR("%s", tgt->error);
+ DMERR("%s: %s: unknown target type", dm_device_name(t->md),
+ type);
return -EINVAL;
}
return 0;
bad:
- DMERR("%s", tgt->error);
+ DMERR("%s: %s: %s", dm_device_name(t->md), type, tgt->error);
dm_put_target_type(tgt->type);
return r;
}
struct dm_target *dm_table_get_target(struct dm_table *t, unsigned int index)
{
- if (index > t->num_targets)
+ if (index >= t->num_targets)
return NULL;
return t->targets + index;