ceph/src/spdk/ocf/src/utils/utils_device.h

   1 /*
   2  * Copyright(c) 2012-2018 Intel Corporation
   3  * SPDX-License-Identifier: BSD-3-Clause-Clear
   4  */
   5
   6 #ifndef UTILS_DEVICE_H_
   7 #define UTILS_DEVICE_H_
   8
   9 static inline int _ocf_uuid_set(const struct ocf_volume_uuid *uuid,
  10                 struct ocf_metadata_uuid *muuid)
  11 {
  12         int result;
  13
  14         if (!uuid || !muuid) {
  15                 return -EINVAL;
  16         }
  17
  18         if (!uuid->data || !muuid->data) {
  19                 return -EINVAL;
  20         }
  21
  22         if (uuid->size > sizeof(muuid->data)) {
  23                 return -ENOBUFS;
  24         }
  25
  26         result = env_memcpy(muuid->data, sizeof(muuid->data), uuid->data, uuid->size);
  27         if (result)
  28                 return result;
  29         result = env_memset(muuid->data + uuid->size,
  30                         sizeof(muuid->data) - uuid->size, 0);
  31         if (result)
  32                 return result;
  33         muuid->size = uuid->size;
  34
  35         return 0;
  36 }
  37
  38 static inline int ocf_metadata_set_core_uuid(ocf_core_t core,
  39                 const struct ocf_volume_uuid *uuid,
  40                 struct ocf_volume_uuid *new_uuid)
  41 {
  42         ocf_cache_t cache = ocf_core_get_cache(core);
  43         struct ocf_metadata_uuid *muuid = ocf_metadata_get_core_uuid(cache,
  44                                                 ocf_core_get_id(core));
  45
  46         if (_ocf_uuid_set(uuid, muuid))
  47                 return -ENOBUFS;
  48
  49         if (new_uuid) {
  50                 new_uuid->data = muuid->data;
  51                 new_uuid->size = muuid->size;
  52         }
  53
  54         return 0;
  55 }
  56
  57 static inline void ocf_metadata_clear_core_uuid(ocf_core_t core)
  58 {
  59         struct ocf_volume_uuid uuid = { .size = 0, };
  60
  61         ocf_metadata_set_core_uuid(core, &uuid, NULL);
  62 }
  63
  64 #endif /* UTILS_MEM_H_ */