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Kernel: Implement bind mounts
You can now bind-mount files and directories. This essentially exposes an existing part of the file system in another place, and can be used as an alternative to symlinks or hardlinks. Here's an example of doing this: # mkdir /tmp/foo # mount /home/anon/myfile.txt /tmp/foo -o bind # cat /tmp/foo This is anon's file.
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@ -48,6 +48,7 @@ public:
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class Mount {
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public:
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Mount(FS&, Custody* host_custody, int flags);
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Mount(Inode& source, Custody& host_custody);
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InodeIdentifier host() const;
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InodeIdentifier guest() const { return m_guest; }
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@ -73,6 +74,7 @@ public:
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bool mount_root(FS&);
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KResult mount(FS&, Custody& mount_point, int flags);
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KResult bind_mount(Custody& source, Custody& mount_point);
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KResult unmount(InodeIdentifier guest_inode_id);
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KResultOr<NonnullRefPtr<FileDescription>> open(StringView path, int options, mode_t mode, Custody& base, Optional<UidAndGid> = {});
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