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Kernel: Change Inode::{read/write}_bytes interface to KResultOr<ssize_t>
The error handling in all these cases was still using the old style negative values to indicate errors. We have a nicer solution for this now with KResultOr<T>. This change switches the interface and then all implementers to use the new style.
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18 changed files with 88 additions and 82 deletions
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@ -57,11 +57,11 @@ public:
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protected:
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DevFSInode(DevFS&);
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virtual ssize_t read_bytes(off_t, ssize_t, UserOrKernelBuffer& buffer, FileDescription*) const override;
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virtual KResultOr<ssize_t> read_bytes(off_t, ssize_t, UserOrKernelBuffer& buffer, FileDescription*) const override;
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virtual KResult traverse_as_directory(Function<bool(const FS::DirectoryEntryView&)>) const override;
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virtual RefPtr<Inode> lookup(StringView name) override;
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virtual void flush_metadata() override;
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virtual ssize_t write_bytes(off_t, ssize_t, const UserOrKernelBuffer& buffer, FileDescription*) override;
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virtual KResultOr<ssize_t> write_bytes(off_t, ssize_t, const UserOrKernelBuffer& buffer, FileDescription*) override;
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virtual KResultOr<NonnullRefPtr<Inode>> create_child(const String& name, mode_t, dev_t, uid_t, gid_t) override;
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virtual KResult add_child(Inode&, const StringView& name, mode_t) override;
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virtual KResult remove_child(const StringView& name) override;
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@ -83,9 +83,9 @@ private:
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String determine_name() const;
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DevFSDeviceInode(DevFS&, const Device&);
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// ^Inode
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virtual ssize_t read_bytes(off_t, ssize_t, UserOrKernelBuffer& buffer, FileDescription*) const override;
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virtual KResultOr<ssize_t> read_bytes(off_t, ssize_t, UserOrKernelBuffer& buffer, FileDescription*) const override;
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virtual InodeMetadata metadata() const override;
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virtual ssize_t write_bytes(off_t, ssize_t, const UserOrKernelBuffer& buffer, FileDescription*) override;
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virtual KResultOr<ssize_t> write_bytes(off_t, ssize_t, const UserOrKernelBuffer& buffer, FileDescription*) override;
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virtual KResult chown(uid_t, gid_t) override;
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NonnullRefPtr<Device> m_attached_device;
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@ -106,9 +106,9 @@ public:
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protected:
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DevFSLinkInode(DevFS&, String);
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// ^Inode
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virtual ssize_t read_bytes(off_t, ssize_t, UserOrKernelBuffer& buffer, FileDescription*) const override;
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virtual KResultOr<ssize_t> read_bytes(off_t, ssize_t, UserOrKernelBuffer& buffer, FileDescription*) const override;
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virtual InodeMetadata metadata() const override;
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virtual ssize_t write_bytes(off_t, ssize_t, const UserOrKernelBuffer& buffer, FileDescription*) override;
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virtual KResultOr<ssize_t> write_bytes(off_t, ssize_t, const UserOrKernelBuffer& buffer, FileDescription*) override;
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const String m_name;
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String m_link;
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