forked from TrueCloudLab/restic
0e9716a6e6
Forget fs.Node instances once the kernel frees the corresponding nodeId. This ensures that restic does not run out of memory on large snapshots.
65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
//go:build darwin || freebsd || linux
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// +build darwin freebsd linux
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package fuse
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import (
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"context"
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"github.com/anacrolix/fuse"
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"github.com/anacrolix/fuse/fs"
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"github.com/restic/restic/internal/restic"
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)
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// Statically ensure that *link implements the given interface
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var _ = fs.NodeForgetter(&link{})
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var _ = fs.NodeGetxattrer(&link{})
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var _ = fs.NodeListxattrer(&link{})
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var _ = fs.NodeReadlinker(&link{})
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type link struct {
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root *Root
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forget forgetFn
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node *restic.Node
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inode uint64
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}
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func newLink(root *Root, forget forgetFn, inode uint64, node *restic.Node) (*link, error) {
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return &link{root: root, forget: forget, inode: inode, node: node}, nil
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}
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func (l *link) Readlink(_ context.Context, _ *fuse.ReadlinkRequest) (string, error) {
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return l.node.LinkTarget, nil
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}
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func (l *link) Attr(_ context.Context, a *fuse.Attr) error {
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a.Inode = l.inode
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a.Mode = l.node.Mode
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if !l.root.cfg.OwnerIsRoot {
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a.Uid = l.node.UID
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a.Gid = l.node.GID
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}
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a.Atime = l.node.AccessTime
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a.Ctime = l.node.ChangeTime
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a.Mtime = l.node.ModTime
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a.Nlink = uint32(l.node.Links)
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a.Size = uint64(len(l.node.LinkTarget))
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a.Blocks = (a.Size + blockSize - 1) / blockSize
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return nil
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}
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func (l *link) Listxattr(_ context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
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nodeToXattrList(l.node, req, resp)
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return nil
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}
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func (l *link) Getxattr(_ context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
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return nodeGetXattr(l.node, req, resp)
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}
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func (l *link) Forget() {
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l.forget()
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}
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