Tighten up some logic around file permissions#662
Merged
Conversation
Fix a regression in PbxCp which caused files to inappropriately gain the execute bit. `isExecutable` is conceptually a higher level operation which (per POSIX) can return true even if the file has no execute permission bits set: "If execute permission is requested, access shall be granted if execute permission is granted to at least one user by the file permission bits or by an alternate access control mechanism" No test because it's not clear what the concrete conditions are under which this occurs. That said, copying now checks against the owner permission bit specifically, as that's the actual intent of what the code is meaning to do and matches the original behavior. Additionally, fix some missing permission information in getFileInfo for the PseudoFS implementation and increase test coverage a bit. Avoids it coming back to bite later. rdar://154663442
jakepetroules
requested review from
aciidgh,
mhrawdon,
mirza-garibovic,
neonichu and
owenv
as code owners
Collaborator
Author
|
@swift-ci test |
mhrawdon
approved these changes
Jul 21, 2025
neonichu
approved these changes
Jul 21, 2025
Collaborator
Author
|
@swift-ci test linux |
Collaborator
Author
|
@swift-ci test |
Collaborator
Author
|
@swift-ci test linux |
1 similar comment
Collaborator
Author
|
@swift-ci test linux |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Fix a regression (from #565) in PbxCp which caused files to inappropriately gain the execute bit.
isExecutableis conceptually a higher level operation which (per POSIX) can return true even if the file has no execute permission bits set:"If execute permission is requested, access shall be granted if execute permission is granted to at least one user by the file permission bits or by an alternate access control mechanism"
No test because it's not clear what the concrete conditions are under which this occurs. That said, copying now checks against the owner permission bit specifically, as that's the actual intent of what the code is meaning to do and matches the original behavior.
Additionally, fix some missing permission information in getFileInfo for the PseudoFS implementation and increase test coverage a bit. Avoids it coming back to bite later.
rdar://154663442