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>
The fix for #17 stopped adding Synchronize to an Allow rule with generic
rights, which bypassed the exact match of FileSystemSecurity.RemoveAccessRule:
-AccessRights GenericAll left a Synchronize-only entry behind when the entry
also had Synchronize. RemoveRule now does what FileSystemSecurity does,
without its validation: it removes a rule that matches an entry exactly as it
is, and otherwise without Synchronize. It covers every mask that .NET
rejects, not only the generic rights. The tests cover -RemoveSpecific, a
Deny entry, a partial generic mask, and that nothing else is removed.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: AI Assistant <ai@example.com>
FileSystemSecurity.RemoveAccessRule rebuilds a rule that doesn't match an
entry exactly and rejects generic rights then, so removing an entry with
GENERIC_ALL failed with "The value '269484032' is not valid". Windows keeps
generic rights in the inherit-only entries of folders. Such a rule is now
removed through ModifyAccessRule, without the added Synchronize right
(#17).
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Co-authored-by: AI Assistant <ai@example.com>
Defect 17. Both cmdlets carried a removeSpecific field that no parameter
set, so they always took the rights away from matching entries; the
version history documents a -RemoveSpecific switch since 4.1. Both
cmdlets now have the switch, which removes only an entry that matches
exactly. The Security2 list overloads didn't pass the flag on, and the
audit item overload didn't support it; all overloads now do.
The applies-to field of both cmdlets is initialized; -AppliesTo is
mandatory in the Simple sets since defect 14, so it is always set when
used.
Tests: Access.Tests.ps1 3 tests, Audit.Tests.ps1 2 tests, on in-memory
security descriptors.
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Co-authored-by: AI Assistant <ai@example.com>
Raimund Andree
Raimund Andée