XAttr Extension uses the common Linux getxattr and setxattr functions and adds a new netware.metadata2 extended attribute to access additional file metadata that is not available by using other command line options. The new netware.metadata2 attribute has been added to OES 2015 to support both Active Directory and eDirectory identities.
Basically, you call getxattr to read your file attributes and one of its parameters points to the zNW_metadata2_s structure that returns the extended metadata. You can then save this data to a backup location.
To restore or set the extended metadata, call setxattr, specifying which fields you want to modify. By calling these two functions, you can read, modify, back up, and restore all the metadata for your file.
With support for Active Directory introduced in OES 2015, new Xattr structures have been introduced to support both Active Directory and eDirectory identities.
The zNW_metadata2_s Xattr structure has been added to support both Active Directory and eDirectory identities.
typedef struct zNW_metadata2_s {
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WORD |
nwm_byteorder; |
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WORD |
nwm_version; |
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WORD |
nwm_trustee_more; |
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WORD |
nwm_reserved_1; |
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QUAD |
nwm_modify_mask; |
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QUAD |
nwm_file_attributes; |
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QUAD |
nwm_file_attributes_mask; |
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QUAD |
nwm_time_created; |
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QUAD |
nwm_time_archived; |
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QUAD |
nwm_time_modified; |
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QUAD |
nwm_time_accessed; |
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QUAD |
nwm_time_meta_data_modified; |
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QUAD |
nwm_reserved_2; |
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zNW_user_s |
nwm_id_owner; |
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zNW_user_s |
nwm_id_archiver; |
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zNW_user_s |
nwm_id_modifier; |
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zNW_user_s |
nwm_id_metadata_modifier; |
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SQUAD |
nwm_quota_limit; |
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LONG |
nwm_inherited_rights_mask; |
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LONG |
nwm_trustee_num; |
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zNW_trustee2_s |
nwm_trustee[zMAX_TRUSTEES2]; |
} zNW_metadata2_s; |
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The zNW_trustee2_s Xattr structure has been added to accommodate the trustee rights and ID information for both Active Directory and eDirectory users.
typedef struct zNW_metadata2_s {
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zNW_user_s |
nwt_id; |
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QUAD |
nwt_rights; |
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QUAD |
nwt_reserved_2; |
} zNW_metadata2_s; |
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The zNW_user_s Xattr structure contains the identity information and helps to identify the type of user: Active Directory or eDirectory.
typedef struct zNW_user_s {
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LONG |
is_aduser; |
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zNW_id_u |
id; |
} zNW_user_s; |
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zNW_id_u contains the actual user identity information (SID for Active Directory and GUID for eDirectory).
typedef union zNW_id_u {
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SID_t |
aduser; |
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GUID_t |
ediruser; |
} zNW_id_u; |
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zMAX_TRUSTEES2 is defined as 740 that signifies the number of trustees that can be accommodated in the zNW_metadata2_s structure.
#define zMAX_TRUSTEES2 740
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