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Kernel: Handle allocation failure in ProcFS and friends

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There were many places in which allocation failure was noticed but
ignored.
This commit is contained in:
sin-ack 2021-08-14 12:39:51 +00:00 • committed by Andreas Kling
parent 134dbe2607
commit 748938ea59
8 changed files with 196 additions and 92 deletions
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20
Kernel/FileSystem/ProcFS.h
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@ -28,7 +28,7 @@ class ProcFS final : public FileSystem {
public:
virtual ~ProcFS() override;
static RefPtr<ProcFS> create();
static KResultOr<NonnullRefPtr<ProcFS>> try_create();
virtual KResult initialize() override;
virtual StringView class_name() const override { return "ProcFS"sv; }
@ -38,7 +38,7 @@ public:
private:
ProcFS();
NonnullRefPtr<ProcFSDirectoryInode> m_root_inode;
RefPtr<ProcFSDirectoryInode> m_root_inode;
};
class ProcFSInode : public Inode {
@ -69,7 +69,7 @@ class ProcFSGlobalInode : public ProcFSInode {
friend class ProcFS;
public:
static NonnullRefPtr<ProcFSGlobalInode> create(const ProcFS&, const ProcFSExposedComponent&);
static KResultOr<NonnullRefPtr<ProcFSGlobalInode>> try_create(const ProcFS&, const ProcFSExposedComponent&);
virtual ~ProcFSGlobalInode() override {};
StringView name() const;
@ -92,7 +92,7 @@ class ProcFSLinkInode : public ProcFSGlobalInode {
friend class ProcFS;
public:
static NonnullRefPtr<ProcFSLinkInode> create(const ProcFS&, const ProcFSExposedComponent&);
static KResultOr<NonnullRefPtr<ProcFSLinkInode>> try_create(const ProcFS&, const ProcFSExposedComponent&);
protected:
ProcFSLinkInode(const ProcFS&, const ProcFSExposedComponent&);
@ -103,7 +103,7 @@ class ProcFSDirectoryInode final : public ProcFSGlobalInode {
friend class ProcFS;
public:
static NonnullRefPtr<ProcFSDirectoryInode> create(const ProcFS&, const ProcFSExposedComponent&);
static KResultOr<NonnullRefPtr<ProcFSDirectoryInode>> try_create(const ProcFS&, const ProcFSExposedComponent&);
virtual ~ProcFSDirectoryInode() override;
protected:
@ -132,7 +132,7 @@ class ProcFSProcessDirectoryInode final : public ProcFSProcessAssociatedInode {
friend class ProcFS;
public:
static NonnullRefPtr<ProcFSProcessDirectoryInode> create(const ProcFS&, ProcessID);
static KResultOr<NonnullRefPtr<ProcFSProcessDirectoryInode>> try_create(const ProcFS&, ProcessID);
private:
ProcFSProcessDirectoryInode(const ProcFS&, ProcessID);
@ -149,7 +149,7 @@ class ProcFSProcessSubDirectoryInode final : public ProcFSProcessAssociatedInode
friend class ProcFS;
public:
static NonnullRefPtr<ProcFSProcessSubDirectoryInode> create(const ProcFS&, SegmentedProcFSIndex::ProcessSubDirectory, ProcessID);
static KResultOr<NonnullRefPtr<ProcFSProcessSubDirectoryInode>> try_create(const ProcFS&, SegmentedProcFSIndex::ProcessSubDirectory, ProcessID);
private:
ProcFSProcessSubDirectoryInode(const ProcFS&, SegmentedProcFSIndex::ProcessSubDirectory, ProcessID);
@ -168,9 +168,9 @@ class ProcFSProcessPropertyInode final : public ProcFSProcessAssociatedInode {
friend class ProcFS;
public:
static NonnullRefPtr<ProcFSProcessPropertyInode> create_for_file_description_link(const ProcFS&, unsigned, ProcessID);
static NonnullRefPtr<ProcFSProcessPropertyInode> create_for_thread_stack(const ProcFS&, ThreadID, ProcessID);
static NonnullRefPtr<ProcFSProcessPropertyInode> create_for_pid_property(const ProcFS&, SegmentedProcFSIndex::MainProcessProperty, ProcessID);
static KResultOr<NonnullRefPtr<ProcFSProcessPropertyInode>> try_create_for_file_description_link(const ProcFS&, unsigned, ProcessID);
static KResultOr<NonnullRefPtr<ProcFSProcessPropertyInode>> try_create_for_thread_stack(const ProcFS&, ThreadID, ProcessID);
static KResultOr<NonnullRefPtr<ProcFSProcessPropertyInode>> try_create_for_pid_property(const ProcFS&, SegmentedProcFSIndex::MainProcessProperty, ProcessID);
private:
ProcFSProcessPropertyInode(const ProcFS&, SegmentedProcFSIndex::MainProcessProperty, ProcessID);