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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| No
| Win32s
| No
| Import Library
| advapi32.lib
| Header File
| winbase.h
| Unicode
| No
| Platform Notes
| None
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MakeAbsoluteSD
The MakeAbsoluteSD function creates a security descriptor in absolute format by using a security
descriptor in self-relative format as a template.
BOOL MakeAbsoluteSD(
PSECURITY_DESCRIPTOR pSelfRelativeSecurityDescriptor,
| // address self-relative SD
| PSECURITY_DESCRIPTOR pAbsoluteSecurityDescriptor,
| // address of absolute SD
| LPDWORD lpdwAbsoluteSecurityDescriptorSize,
| // address of size of absolute SD
| PACL pDacl,
| // address of discretionary ACL
| LPDWORD lpdwDaclSize,
| // address of size of discretionary ACL
| PACL pSacl,
| // address of system ACL
| LPDWORD lpdwSaclSize,
| // address of size of system ACL
| PSID pOwner,
| // address of owner SID
| LPDWORD lpdwOwnerSize,
| // address of size of owner SID
| PSID pPrimaryGroup,
| // address of primary-group SID
| LPDWORD lpdwPrimaryGroupSize
| // address of size of group SID
| );
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Parameters
pSelfRelativeSecurityDescriptor
Points to a SECURITY_DESCRIPTOR structure in self-relative format. The function creates an absolute-format
version of this security descriptor without modifying the original security
descriptor.
pAbsoluteSecurityDescriptor
Points to a buffer that the function fills with the main body of an
absolute-format security descriptor. This information is formatted as a SECURITY_DESCRIPTOR structure.
lpdwAbsoluteSecurityDescriptorSize
Points to a variable specifying the size of the buffer pointed to by the pAbsoluteSecurityDescriptor parameter. If the buffer is not large enough for the security descriptor, the
function fails and sets this variable to the minimum required size.
pDacl
Points to a buffer the function fills with the discretionary access-control
list (ACL) of the absolute-format security descriptor. The main body of the
absolute-format security descriptor references this pointer.
lpdwDaclSize
Points to a variable specifying the size of the buffer pointed to by the pDacl parameter. If the buffer is not large enough for the ACL, the function fails
and sets this variable to the minimum required size.
pSacl
Points to a buffer the function fills with the system ACL of the
absolute-format security descriptor. The main body of the absolute-format security
descriptor references this pointer.
lpdwSaclSize
Points to a variable specifying the size of the buffer pointed to by the pSacl parameter. If the buffer is not large enough for the ACL, the function fails
and sets this variable to the minimum required size.
pOwner
Points to a buffer the function fills with the security identifier (SID) of
the owner of the absolute-format security descriptor. The main body of the
absolute-format security descriptor references this pointer.
lpdwOwnerSize
Points to a variable specifying the size of the buffer pointed to by the pOwner parameter. If the buffer is not large enough for the SID, the function fails
and sets this variable to the minimum required size.
pPrimaryGroup
Points to a buffer the function fills with the SID of the absolute-format
security descriptor's primary group. The main body of the absolute-format security
descriptor references this pointer.
lpdwPrimaryGroupSize
Points to a variable specifying the size of the buffer pointed to by the pPrimaryGroup parameter. If the buffer is not large enough for the SID, the function fails
and sets this variable to the minimum required size.
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
A security descriptor in absolute format contains pointers to the information
it contains, rather than the information itself. A security descriptor in
self-relative format contains the information in a contiguous block of memory. In a
self-relative security descriptor, a SECURITY_DESCRIPTOR structure always starts the information, but the security descriptor's other
components can follow the structure in any order. Instead of using memory
addresses, the components of the self-relative security descriptor are identified by
offsets from the beginning of the security descriptor. This format is useful
when an security descriptor must be stored on a floppy disk or transmitted by
means of a communications protocol.
A server that copies secured objects to various media can use the MakeAbsoluteSD function to create an absolute security descriptor from a self-relative
security descriptor and the MakeSelfRelativeSD function to create a self-relative security descriptor from an absolute
security descriptor.
See Also
MakeSelfRelativeSD, SECURITY_DESCRIPTOR
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