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composite volume: add subvolume iterator API

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Signed-off-by: Michal Mielewczyk <michal.mielewczyk@huawei.com>
This commit is contained in:
Michal Mielewczyk 2023-08-27 11:19:09 +02:00
parent 6907abeba2
commit 82c8d4f45c
2 changed files with 32 additions and 0 deletions
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16
inc/ocf_composite_volume.h
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@ -1,5 +1,6 @@
/* /*
* Copyright(c) 2022 Intel Corporation * Copyright(c) 2022 Intel Corporation
* Copyright(c) 2024 Huawei Technologies
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -54,4 +55,19 @@ int ocf_composite_volume_add(ocf_composite_volume_t cvolume,
ocf_volume_type_t type, struct ocf_volume_uuid *uuid, ocf_volume_type_t type, struct ocf_volume_uuid *uuid,
void *volume_params); void *volume_params);
typedef int (*ocf_composite_volume_member_visitor_t)(ocf_volume_t subvolume,
void *priv);
/**
* @brief Call @visitor on every valid member of composite volume
*
* @param[in] cvolume composite volume handle
* @param[in] visitor function callback
* @param[in] priv pointer to be passed to the callback
*
* @return subvolume in composite volume
*/
int ocf_composite_volume_member_visit(ocf_composite_volume_t cvolume,
ocf_composite_volume_member_visitor_t visitor, void *priv);
#endif /* __OCF_COMPOSITE_VOLUME_H__ */ #endif /* __OCF_COMPOSITE_VOLUME_H__ */

16
src/ocf_composite_volume.c
View File

@ -393,3 +393,19 @@ int ocf_composite_volume_add(ocf_composite_volume_t cvolume,
return 0; return 0;
} }
int ocf_composite_volume_member_visit(ocf_composite_volume_t cvolume,
ocf_composite_volume_member_visitor_t visitor, void *priv)
{
struct ocf_composite_volume *composite = ocf_volume_get_priv(cvolume);
int i;
int res;
for (i = 0 ; i < composite->members_cnt; i++) {
res = visitor(&composite->member[i].volume, priv);
if (res != 0)
return res;
}
return 0;
}