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Kernel: Ignore dirfd if absolute path is given in VFS-related syscalls

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To be able to do this, we add a new class called CustodyBase, which can
be resolved on-demand internally in the VirtualFileSystem resolving path
code.

When being resolved, CustodyBase will return a known custody if it was
constructed with such, if that's not the case it will provide the root
custody if the original path is absolute.
Lastly, if that's not the case as well, it will resolve the given dirfd
to provide a Custody object.
This commit is contained in:
Liav A.
2024-05-24 05:08:28 +03:00
committed by Tim Schumacher
parent 1e4a78ee04
commit ecc9c5409d
23 changed files with 157 additions and 71 deletions
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2
Kernel/FileSystem/Inode.cpp
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@@ -52,7 +52,7 @@ void Inode::sync()
}
}
ErrorOr<NonnullRefPtr<Custody>> Inode::resolve_as_link(Credentials const& credentials, Custody& base, RefPtr<Custody>* out_parent, int options, int symlink_recursion_level) const
ErrorOr<NonnullRefPtr<Custody>> Inode::resolve_as_link(Credentials const& credentials, CustodyBase const& base, RefPtr<Custody>* out_parent, int options, int symlink_recursion_level) const
{
// The default implementation simply treats the stored
// contents as a path and resolves that. That is, it