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Kernel+Userland: Support remounting filesystems :^)

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This makes it possible to change flags of a mount after the fact, with the
caveats outlined in the man page.
This commit is contained in:
Sergey Bugaev
2020-05-28 21:12:13 +03:00
committed by Andreas Kling
parent d395b93b15
commit 3847d00727
8 changed files with 58 additions and 0 deletions
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2
Kernel/FileSystem/VirtualFileSystem.h
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@@ -66,6 +66,7 @@ public:
String absolute_path() const;
int flags() const { return m_flags; }
void set_flags(int flags) { m_flags = flags; }
private:
InodeIdentifier m_host;
@@ -83,6 +84,7 @@ public:
bool mount_root(FS&);
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);
KResultOr<NonnullRefPtr<FileDescription>> open(StringView path, int options, mode_t mode, Custody& base, Optional<UidAndGid> = {});