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Add a simple /proc/mounts that enumerates the current VFS mounts.

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This commit is contained in:
Andreas Kling 2018-10-26 18:43:25 +02:00
parent a447359916
commit 81627cf7d5
6 changed files with 46 additions and 17 deletions
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33
VirtualFileSystem/VirtualFileSystem.h
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@ -20,6 +20,21 @@ public:
static void initializeGlobals();
static SpinLock& lock();
class Mount {
public:
Mount(InodeIdentifier host, RetainPtr<FileSystem>&&);
InodeIdentifier host() const { return m_host; }
InodeIdentifier guest() const { return m_guest; }
const FileSystem& fileSystem() const { return *m_fileSystem; }
private:
InodeIdentifier m_host;
InodeIdentifier m_guest;
RetainPtr<FileSystem> m_fileSystem;
};
struct Node {
InodeIdentifier inode;
const InodeMetadata& metadata() const;
@ -46,7 +61,7 @@ public:
mutable InodeMetadata m_cachedMetadata;
};
static VirtualFileSystem& the();
static VirtualFileSystem& the() PURE;
VirtualFileSystem();
~VirtualFileSystem();
@ -74,6 +89,9 @@ public:
void registerCharacterDevice(unsigned major, unsigned minor, CharacterDevice&);
size_t mountCount() const { return m_mounts.size(); }
void forEachMount(Function<void(const Mount&)>) const;
private:
friend class FileHandle;
@ -88,19 +106,6 @@ private:
RetainPtr<Node> makeNode(InodeIdentifier);
RetainPtr<Node> getOrCreateNode(InodeIdentifier);
class Mount {
public:
Mount(InodeIdentifier host, RetainPtr<FileSystem>&&);
InodeIdentifier host() const { return m_host; }
InodeIdentifier guest() const { return m_guest; }
private:
InodeIdentifier m_host;
InodeIdentifier m_guest;
RetainPtr<FileSystem> m_fileSystem;
};
Mount* findMountForHost(InodeIdentifier);
Mount* findMountForGuest(InodeIdentifier);