如何从c ++更改ACL？

问题描述

如何从c ++更改ACL？

how to change the ACLs from c++?

任何人都可以帮助我从c ++做下面的没有任何确认：

can anyone help me to do the folowing from c++ without any confirmations:

cacls c：\personal\file.txt / d everyone？

cacls c:\personal\file.txt /d everyone ?

推荐答案

p>

Use following code

#include <Accctrl.h>
#include <Aclapi.h>
void SetFilePermission(LPCTSTR FileName)
{
    PSID pEveryoneSID = NULL;
    PACL pACL = NULL;
    EXPLICIT_ACCESS ea[1];
    SID_IDENTIFIER_AUTHORITY SIDAuthWorld = SECURITY_WORLD_SID_AUTHORITY;

    // Create a well-known SID for the Everyone group.
    AllocateAndInitializeSid(&SIDAuthWorld, 1,
                     SECURITY_WORLD_RID,
                     0, 0, 0, 0, 0, 0, 0,
                     &pEveryoneSID);

    // Initialize an EXPLICIT_ACCESS structure for an ACE.
    // The ACE will allow Everyone read access to the key.
    ZeroMemory(&ea, 1 * sizeof(EXPLICIT_ACCESS));
    ea[0].grfAccessPermissions = 0xFFFFFFFF;
    ea[0].grfAccessMode = GRANT_ACCESS;
    ea[0].grfInheritance= NO_INHERITANCE;
    ea[0].Trustee.TrusteeForm = TRUSTEE_IS_SID;
    ea[0].Trustee.TrusteeType = TRUSTEE_IS_WELL_KNOWN_GROUP;
    ea[0].Trustee.ptstrName  = (LPTSTR) pEveryoneSID;

    // Create a new ACL that contains the new ACEs.
    SetEntriesInAcl(1, ea, NULL, &pACL);

    // Initialize a security descriptor.  
    PSECURITY_DESCRIPTOR pSD = (PSECURITY_DESCRIPTOR) LocalAlloc(LPTR, 
                                SECURITY_DESCRIPTOR_MIN_LENGTH); 

    InitializeSecurityDescriptor(pSD,SECURITY_DESCRIPTOR_REVISION);

    // Add the ACL to the security descriptor. 
    SetSecurityDescriptorDacl(pSD, 
            TRUE,     // bDaclPresent flag   
            pACL, 
            FALSE);   // not a default DACL 


    //Change the security attributes
    SetFileSecurity(FileName, DACL_SECURITY_INFORMATION, pSD);

    if (pEveryoneSID) 
        FreeSid(pEveryoneSID);
    if (pACL) 
        LocalFree(pACL);
    if (pSD) 
        LocalFree(pSD);
}

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