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Implement /proc/PID/vm.

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Refactored SyntheticFileSystem to maintain an arbitrary directory structure.
ProcFileSystem creates a directory entry in /proc for each new process.
This commit is contained in:
Andreas Kling 2018-10-26 17:42:12 +02:00
parent 10347b9ae8
commit a32b3a3ddf
15 changed files with 217 additions and 39 deletions
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14
VirtualFileSystem/SyntheticFileSystem.h
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@ -21,21 +21,31 @@ public:
virtual InodeIdentifier makeDirectory(InodeIdentifier parentInode, const String& name, Unix::mode_t) override;
protected:
typedef unsigned InodeIndex;
InodeIndex generateInodeIndex();
static constexpr InodeIndex RootInodeIndex = 1;
SyntheticFileSystem();
struct File {
String name;
InodeMetadata metadata;
InodeIdentifier parent;
ByteBuffer data;
Function<ByteBuffer()> generator;
Vector<File*> children;
};
OwnPtr<File> createDirectory(String&& name);
OwnPtr<File> createTextFile(String&& name, String&& text);
OwnPtr<File> createGeneratedFile(String&& name, Function<ByteBuffer()>&&);
void addFile(OwnPtr<File>&&);
InodeIdentifier addFile(OwnPtr<File>&&, InodeIndex parent = RootInodeIndex);
bool removeFile(InodeIndex);
private:
Vector<OwnPtr<File>> m_files;
InodeIndex m_nextInodeIndex { 2 };
HashMap<InodeIndex, OwnPtr<File>> m_inodes;
};