info->vers = align_ptr(((void *) ++info->vers) + strlen(tt->name) + 1);
}
-static int list_versions(struct file *filp, struct dm_ioctl *param, size_t param_size)
+static int __list_versions(struct dm_ioctl *param, size_t param_size, const char *name)
{
size_t len, needed = 0;
struct dm_target_versions *vers;
struct vers_iter iter_info;
+ struct target_type *tt = NULL;
+
+ if (name) {
+ tt = dm_get_target_type(name);
+ if (!tt)
+ return -EINVAL;
+ }
/*
* Loop through all the devices working out how much
* space we need.
*/
- dm_target_iterate(list_version_get_needed, &needed);
+ if (!tt)
+ dm_target_iterate(list_version_get_needed, &needed);
+ else
+ list_version_get_needed(tt, &needed);
/*
* Grab our output buffer.
/*
* Now loop through filling out the names & versions.
*/
- dm_target_iterate(list_version_get_info, &iter_info);
+ if (!tt)
+ dm_target_iterate(list_version_get_info, &iter_info);
+ else
+ list_version_get_info(tt, &iter_info);
param->flags |= iter_info.flags;
out:
+ if (tt)
+ dm_put_target_type(tt);
return 0;
}
+static int list_versions(struct file *filp, struct dm_ioctl *param, size_t param_size)
+{
+ return __list_versions(param, param_size, NULL);
+}
+
+static int get_target_version(struct file *filp, struct dm_ioctl *param, size_t param_size)
+{
+ return __list_versions(param, param_size, param->name);
+}
+
static int check_name(const char *name)
{
if (strchr(name, '/')) {
{DM_TARGET_MSG_CMD, 0, target_message},
{DM_DEV_SET_GEOMETRY_CMD, 0, dev_set_geometry},
{DM_DEV_ARM_POLL, IOCTL_FLAGS_NO_PARAMS, dev_arm_poll},
+ {DM_GET_TARGET_VERSION, 0, get_target_version},
};
if (unlikely(cmd >= ARRAY_SIZE(_ioctls)))
DM_TARGET_MSG_CMD,
DM_DEV_SET_GEOMETRY_CMD,
DM_DEV_ARM_POLL_CMD,
+ DM_GET_TARGET_VERSION_CMD,
};
#define DM_IOCTL 0xfd
#define DM_TABLE_STATUS _IOWR(DM_IOCTL, DM_TABLE_STATUS_CMD, struct dm_ioctl)
#define DM_LIST_VERSIONS _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, struct dm_ioctl)
+#define DM_GET_TARGET_VERSION _IOWR(DM_IOCTL, DM_GET_TARGET_VERSION_CMD, struct dm_ioctl)
#define DM_TARGET_MSG _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
-#define DM_VERSION_MINOR 40
+#define DM_VERSION_MINOR 41
#define DM_VERSION_PATCHLEVEL 0
-#define DM_VERSION_EXTRA "-ioctl (2019-01-18)"
+#define DM_VERSION_EXTRA "-ioctl (2019-09-16)"
/* Status bits */
#define DM_READONLY_FLAG (1 << 0) /* In/Out */