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Kernel: Tidy up SysFS construction

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- Use KResultOr and TRY() to propagate errors
- Check for OOM errors
- Move allocation out of constructors

There's still a lot more to do here, as SysFS is still quite brittle
in the face of memory pressure.
This commit is contained in:
Andreas Kling 2021-09-06 11:06:20 +02:00
parent 788b91a65c
commit 47bfbe343b
5 changed files with 19 additions and 19 deletions
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8
Kernel/FileSystem/SysFS.h
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@ -60,7 +60,7 @@ class SysFS final : public FileSystem {
public:
virtual ~SysFS() override;
static NonnullRefPtr<SysFS> create();
static KResultOr<NonnullRefPtr<SysFS>> try_create();
virtual KResult initialize() override;
virtual StringView class_name() const override { return "SysFS"sv; }
@ -70,7 +70,7 @@ public:
private:
SysFS();
NonnullRefPtr<SysFSInode> m_root_inode;
RefPtr<SysFSInode> m_root_inode;
};
class SysFSInode : public Inode {
@ -78,7 +78,7 @@ class SysFSInode : public Inode {
friend class SysFSDirectoryInode;
public:
static NonnullRefPtr<SysFSInode> create(SysFS const&, SysFSComponent const&);
static KResultOr<NonnullRefPtr<SysFSInode>> try_create(SysFS const&, SysFSComponent const&);
StringView name() const { return m_associated_component->name(); }
protected:
@ -106,7 +106,7 @@ class SysFSDirectoryInode : public SysFSInode {
friend class SysFS;
public:
static NonnullRefPtr<SysFSDirectoryInode> create(SysFS const&, SysFSComponent const&);
static KResultOr<NonnullRefPtr<SysFSDirectoryInode>> try_create(SysFS const&, SysFSComponent const&);
virtual ~SysFSDirectoryInode() override;
SysFS& fs() { return static_cast<SysFS&>(Inode::fs()); }