How to convert RID to user-name?

OSR_Community_User · October 9, 2002, 7:29am

If RID is “S-1-5-21-1614895754-854245398-1368107171-500”, RID means
“Administrator”.
And, If RID is “S-1-5-21-1614895754-854245398-1368107171-1002”, RID means
“OTHER USER”(eg, susan).

Then, How can i convert relative identifier(RID) to user-name?
Up to now, I converted binary SIDs to string SIDs, using
RtlConvertSidToUnicodeString function.

OSR_Community_User · October 9, 2002, 7:45am

Chang,

you wrote on Wednesday, October 9, 2002, 13:31:56:

CSJ> Then, How can i convert relative identifier(RID) to user-name?

LookupAccountSid()

Ralf.

OSR_Community_User · October 9, 2002, 11:59am

> Then, How can i convert relative identifier(RID) to user-name?

This is LookupAccountName, and it requires RPC calls to domain
controllers.

Max

OSR_Community_User · October 9, 2002, 10:16pm

Thanks for your advice!

My target-mode is kernel-mode(not user-mode).
So, I use DDK.
In kernel-mode, It seems that “LookupAccountSid function” is not
available.

How can i convert RID to user-name in kernel-mode DDK.

Chang Sung. Jung.

OSR_Community_User · October 11, 2002, 12:15pm

> In kernel-mode, It seems that “LookupAccountSid function” is not

available.

Surely not, it is user-mode function from Advapi32.dll

How can i convert RID to user-name in kernel-mode DDK.

You do not need any user names in kernel mode. Add an helper user-mode
code.

Max