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Kernel: Implement recursion limit on path resolution

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Cautiously use 5 as a limit for now so that we don't blow the stack.
This can be increased in the future if we are sure that we won't be
blowing the stack, or if the implementation is changed to not use
recursion :^)
This commit is contained in:
Shannon Booth
2019-12-24 22:39:21 +13:00
committed by Andreas Kling
parent 3623e35978
commit 0e45b9423b
Notes: sideshowbarker 2024-07-19 10:42:15 +09:00 
Author: https://github.com/shannonbooth
Commit: https://github.com/SerenityOS/serenity/commit/0e45b9423b0
Pull-request: https://github.com/SerenityOS/serenity/pull/911
Reviewed-by: https://github.com/awesomekling
2 changed files with 8 additions and 11 deletions
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Kernel/FileSystem/VirtualFileSystem.h
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@@ -88,7 +88,7 @@ public:
void sync();
Custody& root_custody();
KResultOr<NonnullRefPtr<Custody>> resolve_path(StringView path, Custody& base, RefPtr<Custody>* parent = nullptr, int options = 0);
KResultOr<NonnullRefPtr<Custody>> resolve_path(StringView path, Custody& base, RefPtr<Custody>* parent = nullptr, int options = 0, int symlink_recursion_level = 0);
private:
friend class FileDescription;