RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 16:17:45 +00:00
Code Issues Activity Actions

Kernel: Clarify ambiguous {File,Description}::absolute_path

Browse source 
Found due to smelly code in InodeFile::absolute_path.

In particular, this replaces the following misleading methods:

File::absolute_path
This method *never* returns an actual path, and if called on an
InodeFile (which is impossible), it would VERIFY_NOT_REACHED().

OpenFileDescription::try_serialize_absolute_path
OpenFileDescription::absolute_path
These methods do not guarantee to return an actual path (just like the
other method), and just like Custody::absolute_path they do not
guarantee accuracy. In particular, just renaming the method made a
TOCTOU bug obvious.

The new method signatures use KResultOr, just like
try_serialize_absolute_path() already did.
This commit is contained in:
Ben Wiederhake 2021-10-30 00:45:23 +02:00 • committed by Andreas Kling
parent 88ca12f037
commit c05c5a7ff4
28 changed files with 83 additions and 65 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Kernel/TTY/MasterPTY.h
View file

@ -26,7 +26,7 @@ public:
void notify_slave_closed(Badge<SlavePTY>);
bool is_closed() const { return m_closed; }
virtual String absolute_path(const OpenFileDescription&) const override;
virtual KResultOr<NonnullOwnPtr<KString>> pseudo_path(const OpenFileDescription&) const override;
private:
explicit MasterPTY(unsigned index, NonnullOwnPtr<DoubleBuffer> buffer);