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Code Activity

dll: CreateSelfRelativeSecurityDescriptor now supports self relative security descriptors as input

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This commit is contained in:
Bill Zissimopoulos
2015-12-01 17:34:00 -08:00
parent 2298a6f7c6
commit 763d4666a7
1 changed files with 25 additions and 6 deletions
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31
src/dll/fsctl.c
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@@ -31,6 +31,8 @@ static NTSTATUS CreateSelfRelativeSecurityDescriptor(PSECURITY_DESCRIPTOR Securi
BOOLEAN Success; BOOLEAN Success;
PSECURITY_DESCRIPTOR SelfRelativeSecurityDescriptor = 0; PSECURITY_DESCRIPTOR SelfRelativeSecurityDescriptor = 0;
DWORD SelfRelativeSecurityDescriptorSize; DWORD SelfRelativeSecurityDescriptorSize;
SECURITY_DESCRIPTOR_CONTROL SecurityDescriptorControl;
DWORD SecurityDescriptorRevision;
SECURITY_DESCRIPTOR SecurityDescriptorStruct; SECURITY_DESCRIPTOR SecurityDescriptorStruct;
PTOKEN_USER User = 0; PTOKEN_USER User = 0;
PACL Acl = 0; PACL Acl = 0;
@@ -64,12 +66,29 @@ static NTSTATUS CreateSelfRelativeSecurityDescriptor(PSECURITY_DESCRIPTOR Securi
SecurityDescriptor = &SecurityDescriptorStruct; SecurityDescriptor = &SecurityDescriptorStruct;
} }
SelfRelativeSecurityDescriptorSize = 0; if (!GetSecurityDescriptorControl(SecurityDescriptor,
Success = &SecurityDescriptorControl, &SecurityDescriptorRevision))
(MakeSelfRelativeSD(SecurityDescriptor, 0, &SelfRelativeSecurityDescriptorSize) || {
ERROR_INSUFFICIENT_BUFFER == GetLastError()) && Result = FspNtStatusFromWin32(GetLastError());
(SelfRelativeSecurityDescriptor = Malloc(SelfRelativeSecurityDescriptorSize)) && goto exit;
(MakeSelfRelativeSD(SecurityDescriptor, SelfRelativeSecurityDescriptor, &SelfRelativeSecurityDescriptorSize)); }
if (SecurityDescriptorControl & SE_SELF_RELATIVE)
{
SelfRelativeSecurityDescriptorSize = GetSecurityDescriptorLength(SecurityDescriptor);
Success =
(SelfRelativeSecurityDescriptor = Malloc(SelfRelativeSecurityDescriptorSize)) &&
memcpy(SelfRelativeSecurityDescriptor, SecurityDescriptor, SelfRelativeSecurityDescriptorSize);
}
else
{
SelfRelativeSecurityDescriptorSize = 0;
Success =
(MakeSelfRelativeSD(SecurityDescriptor, 0, &SelfRelativeSecurityDescriptorSize) ||
ERROR_INSUFFICIENT_BUFFER == GetLastError()) &&
(SelfRelativeSecurityDescriptor = Malloc(SelfRelativeSecurityDescriptorSize)) &&
(MakeSelfRelativeSD(SecurityDescriptor, SelfRelativeSecurityDescriptor, &SelfRelativeSecurityDescriptorSize));
}
if (!Success) if (!Success)
{ {
Result = FspNtStatusFromWin32(GetLastError()); Result = FspNtStatusFromWin32(GetLastError());