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Kernel: Added unmount ability to VFS

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It is now possible to unmount file systems from the VFS via `umount`.
It works via looking up the `fsid` of the filesystem from the `Inode`'s
metatdata so I'm not sure how fragile it is. It seems to work for now
though as something to get us going.
This commit is contained in:
Jesse Buhagiar 2019-08-11 23:56:39 +10:00 • committed by Andreas Kling
parent f7251c74a9
commit bc22456f89
13 changed files with 98 additions and 3 deletions
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3
Kernel/FileSystem/VirtualFileSystem.h
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@ -59,6 +59,7 @@ public:
bool mount_root(NonnullRefPtr<FS>&&);
KResult mount(NonnullRefPtr<FS>&&, StringView path);
KResult mount(NonnullRefPtr<FS>&&, Custody& mount_point);
KResult unmount(NonnullRefPtr<FS>&&);
KResultOr<NonnullRefPtr<FileDescription>> open(StringView path, int options, mode_t mode, Custody& base);
KResultOr<NonnullRefPtr<FileDescription>> create(StringView path, int options, mode_t mode, Custody& parent_custody);
@ -105,6 +106,8 @@ private:
Mount* find_mount_for_host(InodeIdentifier);
Mount* find_mount_for_guest(InodeIdentifier);
Lock m_lock { "VFSLock" };
RefPtr<Inode> m_root_inode;
NonnullOwnPtrVector<Mount> m_mounts;
HashMap<u32, Device*> m_devices;