可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):

问题:

Lists.GetListItems form the Lists Web Service returns a ows_PermMask attribute (16 character hexadecimal) for each list item.

Anyone know how this attribute maps to the user's permissions or where the meaning of this attribute is documented?

回答1:

This site should offer you a little more detail:

http://mdasblog.wordpress.com/2009/02/03/permmask-in-sharepoint-dvwps/

It is just a built in field containing the permissions required:

http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spbuiltinfieldid.permmask.aspx

回答2:

This link also provides some good detail on PermMask:

http://social.technet.microsoft.com/Forums/sharepoint/en-US/c16aa8e4-672b-4241-a88c-6a421000e00f/setting-itemlevel-permissions-through-sharepoints-builtin-webservices?forum=sharepointdevelopmentlegacy

From the comments in that post:

"Using the PermissionMask is only for the current user... which is likely an admin user anyway which will have the permission PermMask="0x7fffffffffffffff"... this is useless for most use cases of finding what users and groups have access to the item / document."

回答3:

The PermMask is very interesting stuff in SharePoint. The value of PermMask is hexadecimal. It is 16 digit (e.g 0x0000XXXXXXXX0000).

The minimum value is 0x0000000000000000 for no permission and maximum value is 0x7FFFFFFFFFFFFFFF for full permission (Basically site collection administrator).

[Bit Level Reservation of PermMask][1]