please dont rip this site Prev Next

InitializeAcl info  Overview  Group

The InitializeAcl function creates a new ACL structure.

An ACL is an access-control list.

BOOL InitializeAcl(

    PACL pAcl,

// address of access-control list

    DWORD nAclLength,

// size of access-control list

    DWORD dwAclRevision 

// revision level of access-control list

   );

Parameters

pAcl
Points to an ACL structure initialized by this function.
nAclLength
Specifies the length, in bytes, of the buffer pointed to by the pAcl parameter. This value must be large enough to contain the ACL header and all of the access-control entries (ACEs) to be stored in the ACL. See the following Remarks section for more information about calculating the size of an ACL.
dwAclRevision
Specifies the revision level of the ACL. This parameter must be set to the current revision level, defined as ACL_REVISION for this version of Windows.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

The ACL initialized by this function contains no ACEs. It is empty, as opposed to being a nonexistent ACL. If an empty ACL is applied to an object, it implicitly denies all access to that object.

To calculate the size of an ACL, add sizeof(ACL) to the size of all the ACEs to be stored in the ACL. To calculate the size of an ACE, add the size of the ACE structure, such as sizeof(ACCESS_ALLOWED_ACE), to the length of the SID associated with the ACE, and then subtract the size of the SidStart member (which is part of both the ACE structure and the SID). Use the GetSidLength function to get the length of a specified SID.

The following example shows how to calculate the size of an access-allowed ACE:
sizeof (ACCESS_ALLOWED_ACE) - sizeof (ACCESS_ALLOWED_ACE.SidStart) 

        + GetLengthSid (pAceSid);

To calculate the size of an ACL, use the following algorithm, substituting the appropriate ACE structure in the sizeof(ACE) expression:
cbAcl = sizeof (ACL);

for (i = 0 ; i < nAceCount ; i++) {



    // subtract ACE.SidStart from the size

    cbAce = sizeof (ACE) - sizeof (DWORD);



    // add this ACE's SID length

    cbAce += GetLengthSid (pAceSid[i]);



    // add the length of each ACE to the total ACL length

    cbAcl += cbAce;

}

See Also

ACCESS_ALLOWED_ACE, ACCESS_DENIED_ACE, ACL, AddAccessAllowedAce, AddAccessDeniedAce, AddAce, AddAuditAccessAce, DeleteAce, GetAce, GetAclInformation, IsValidAcl, SetAclInformation, SID 


file: /Techref/os/win/api/win32/func/src/f49_5.htm, 4KB, , updated: 2000/4/7 11:19, local time: 2024/12/7 21:46,
TOP NEW HELP FIND: 
18.97.14.80:LOG IN

 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.piclist.com/techref/os/win/api/win32/func/src/f49_5.htm"> InitializeAcl</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

  PICList 2024 contributors:
o List host: MIT, Site host massmind.org, Top posters @none found
- Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
 

Welcome to www.piclist.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .