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Kernel/FileSystem: Enforce locking of m_inode_lock when truncating Inode
Such operation is almost equivalent to writing on an Inode, so lock the Inode m_inode_lock exclusively. All FileSystem Inode implementations then override a new method called truncate_locked which should implement the actual truncating.
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13 changed files with 23 additions and 14 deletions
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@ -50,7 +50,7 @@ private:
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virtual ErrorOr<void> chmod(mode_t) override { return EROFS; }
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virtual ErrorOr<void> chown(UserID, GroupID) override { return EROFS; }
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virtual ErrorOr<size_t> write_bytes_locked(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) override { return EROFS; }
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virtual ErrorOr<void> truncate(u64) override { return EROFS; }
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virtual ErrorOr<void> truncate_locked(u64) override { return EROFS; }
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// ^Inode (Silent ignore handling)
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virtual ErrorOr<void> flush_metadata() override { return {}; }
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