Both methods built a LINQ query that filtered the explicit entries down
to the ones whose account was in the given list, but never used the
result: the loop right below removed every explicit entry of the
descriptor regardless of the list, including an empty one. The cmdlets
never pass a list, so only a .NET caller of Security2.dll that does is
affected.
A non-null list now removes only the explicit entries whose account is
one of the listed accounts (compared like the rest of the class does,
by IdentityReference2 equality of the entry's SID); null still removes
every explicit entry, and an empty list now removes none. Inherited
entries are still never touched, as before. Both the FileSystemSecurity2
overload (in-memory only, until a caller writes the descriptor) and the
FileSystemInfo overload (which also writes) are fixed, for access and
audit entries alike.
Public signatures are unchanged.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: AI Assistant <ai@example.com>
The access and audit cmdlets wrote the owner of an item back with the
entries they changed. For a DACL without the auto-inherit flag, Windows
returns the owner and the group even when only the DACL is read, and the
cmdlets wrote every section that the descriptor held. Without the Restore
privilege, or on a file server that refuses the owner, the write failed
with error 1307 (#34).
- Add-NTFSAccess, Clear-NTFSAccess, Add-NTFSAudit, and Clear-NTFSAudit
read only the DACL or the SACL. FileSystemSecurity2.Write(),
Remove-NTFSAccess, and Remove-NTFSAudit write only the sections they
read, which also fixes the access inheritance cmdlets.
- Read together with the SACL, the inherited entries of such a DACL lose
their inherited flag when the parent folder has no SACL, and the
cmdlets stored them as explicit copies. Get-NTFSSecurityDescriptor now
reads the DACL in a separate call.
- Set-NTFSSecurityDescriptor writes only the sections that changed since
they were read; an unchanged descriptor writes nothing (maintainer
decision of 2026-10-06).
- Clear-NTFSAudit writes nothing for an item without a SACL, and reports
an error without the Security privilege (maintainer decision).
The regression tests failed before and pass after the fix in Windows
PowerShell 5.1 and PowerShell 7, elevated and as a basic user.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: AI Assistant <ai@example.com>
Raimund Andree
Raimund Andée