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Kernel: Port mounts to reference inodes directly

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...instead of going through their identifiers. See the previous commit for
reasoning.
This commit is contained in:
Sergey Bugaev
2020-06-25 00:16:24 +03:00
committed by Andreas Kling
parent df66c28479
commit 6efbbcd4ba
9 changed files with 64 additions and 45 deletions
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16
Kernel/FileSystem/VirtualFileSystem.h
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@@ -58,8 +58,11 @@ public:
Mount(FS&, Custody* host_custody, int flags);
Mount(Inode& source, Custody& host_custody, int flags);
InodeIdentifier host() const;
InodeIdentifier guest() const { return m_guest; }
const Inode* host() const;
Inode* host();
const Inode& guest() const { return *m_guest; }
Inode& guest() { return *m_guest; }
const FS& guest_fs() const { return *m_guest_fs; }
@@ -69,8 +72,7 @@ public:
void set_flags(int flags) { m_flags = flags; }
private:
InodeIdentifier m_host;
InodeIdentifier m_guest;
NonnullRefPtr<Inode> m_guest;
NonnullRefPtr<FS> m_guest_fs;
RefPtr<Custody> m_host_custody;
int m_flags;
@@ -85,7 +87,7 @@ public:
KResult mount(FS&, Custody& mount_point, int flags);
KResult bind_mount(Custody& source, Custody& mount_point, int flags);
KResult remount(Custody& mount_point, int new_flags);
KResult unmount(InodeIdentifier guest_inode_id);
KResult unmount(Inode& guest_inode);
KResultOr<NonnullRefPtr<FileDescription>> open(StringView path, int options, mode_t mode, Custody& base, Optional<UidAndGid> = {});
KResultOr<NonnullRefPtr<FileDescription>> create(StringView path, int options, mode_t mode, Custody& parent_custody, Optional<UidAndGid> = {});
@@ -122,13 +124,13 @@ private:
const UnveiledPath* find_matching_unveiled_path(StringView path);
KResult validate_path_against_process_veil(StringView path, int options);
RefPtr<Inode> get_inode(InodeIdentifier);
bool is_vfs_root(InodeIdentifier) const;
void traverse_directory_inode(Inode&, Function<bool(const FS::DirectoryEntry&)>);
Mount* find_mount_for_host(Inode&);
Mount* find_mount_for_host(InodeIdentifier);
Mount* find_mount_for_guest(Inode&);
Mount* find_mount_for_guest(InodeIdentifier);
Lock m_lock { "VFSLock" };