diff options
Diffstat (limited to 'src/nvme/util.h')
| -rw-r--r-- | src/nvme/util.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/nvme/util.h b/src/nvme/util.h index 6f1d3e9..e72c156 100644 --- a/src/nvme/util.h +++ b/src/nvme/util.h @@ -156,6 +156,23 @@ void nvme_init_copy_range_f1(struct nvme_copy_range_f1 *copy, __u16 *nlbs, int nvme_get_feature_length(int fid, __u32 cdw11, __u32 *len); /** + * nvme_get_feature_length2() - Retreive the command payload length for a + * specific feature identifier + * @fid: Feature identifier, see &enum nvme_features_id. + * @cdw11: The cdw11 value may affect the transfer (only known fid is + * %NVME_FEAT_FID_HOST_ID) + * @dir: Data transfer direction: false - host to controller, true - + * controller to host may affect the transfer (only known fid is + * %NVME_FEAT_FID_HOST_MEM_BUF). + * @len: On success, set to this features payload length in bytes. + * + * Return: 0 on success, -1 with errno set to EINVAL if the function did not + * recognize &fid. + */ +int nvme_get_feature_length2(int fid, __u32 cdw11, enum nvme_data_tfr dir, + __u32 *len); + +/** * nvme_get_directive_receive_length() - Get directive receive length * @dtype: Directive type, see &enum nvme_directive_dtype * @doper: Directive receive operation, see &enum nvme_directive_receive_doper @@ -575,4 +592,36 @@ enum nvme_version { */ const char *nvme_get_version(enum nvme_version type); +#define NVME_UUID_LEN_STRING 37 /* 1b4e28ba-2fa1-11d2-883f-0016d3cca427 + \0 */ +#define NVME_UUID_LEN 16 + +/** + * nvme_uuid_to_string - Return string represenation of encoded UUID + * @uuid: Binary encoded input UUID + * @str: Output string represenation of UUID + * + * Return: Returns error code if type conversion fails. + */ +int nvme_uuid_to_string(unsigned char uuid[NVME_UUID_LEN], char *str); + +/** + * nvme_uuid_from_string - Return encoded UUID represenation of string UUID + * @uuid: Binary encoded input UUID + * @str: Output string represenation of UUID + * + * Return: Returns error code if type conversion fails. + */ +int nvme_uuid_from_string(const char *str, unsigned char uuid[NVME_UUID_LEN]); + +/** + * nvme_uuid_random - Generate random UUID + * @uuid: Generated random UUID + * + * Generate random number according + * https://www.rfc-editor.org/rfc/rfc4122#section-4.4 + * + * Return: Returns error code if generating of random number fails. + */ +int nvme_uuid_random(unsigned char uuid[NVME_UUID_LEN]); + #endif /* _LIBNVME_UTIL_H */ |