diff options
Diffstat (limited to 'internal/fusefrontend')
-rw-r--r-- | internal/fusefrontend/node.go | 36 | ||||
-rw-r--r-- | internal/fusefrontend/node_api_check.go | 2 | ||||
-rw-r--r-- | internal/fusefrontend/node_dir_ops.go | 4 |
3 files changed, 42 insertions, 0 deletions
diff --git a/internal/fusefrontend/node.go b/internal/fusefrontend/node.go index 28e606a..5753053 100644 --- a/internal/fusefrontend/node.go +++ b/internal/fusefrontend/node.go @@ -31,6 +31,7 @@ func (n *Node) rootNode() *RootNode { return n.Root().Operations().(*RootNode) } +// Lookup - FUSE call for discovering a file. func (n *Node) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*fs.Inode, syscall.Errno) { rn := n.rootNode() p := filepath.Join(n.path(), name) @@ -61,6 +62,9 @@ func (n *Node) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*fs return ch, 0 } +// GetAttr - FUSE call for stat()ing a file. +// +// GetAttr is symlink-safe through use of openBackingDir() and Fstatat(). func (n *Node) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) syscall.Errno { rn := n.rootNode() dirfd, cName, err := rn.openBackingDir(n.path()) @@ -78,6 +82,9 @@ func (n *Node) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) return 0 } +// Create - FUSE call. Creates a new file. +// +// Symlink-safe through the use of Openat(). func (n *Node) Create(ctx context.Context, name string, flags uint32, mode uint32, out *fuse.EntryOut) (inode *fs.Inode, fh fs.FileHandle, fuseFlags uint32, errno syscall.Errno) { rn := n.rootNode() path := filepath.Join(n.path(), name) @@ -142,3 +149,32 @@ func (n *Node) Create(ctx context.Context, name string, flags uint32, mode uint3 f := os.NewFile(uintptr(fd), cName) return ch, NewFile2(f, rn, st), 0, 0 } + +// Unlink - FUSE call. Delete a file. +// +// Symlink-safe through use of Unlinkat(). +func (n *Node) Unlink(ctx context.Context, name string) syscall.Errno { + rn := n.rootNode() + p := filepath.Join(n.path(), name) + if rn.isFiltered(p) { + return syscall.EPERM + } + dirfd, cName, err := rn.openBackingDir(p) + if err != nil { + return fs.ToErrno(err) + } + defer syscall.Close(dirfd) + // Delete content + err = syscallcompat.Unlinkat(dirfd, cName, 0) + if err != nil { + return fs.ToErrno(err) + } + // Delete ".name" file + if !rn.args.PlaintextNames && nametransform.IsLongContent(cName) { + err = nametransform.DeleteLongNameAt(dirfd, cName) + if err != nil { + tlog.Warn.Printf("Unlink: could not delete .name file: %v", err) + } + } + return fs.ToErrno(err) +} diff --git a/internal/fusefrontend/node_api_check.go b/internal/fusefrontend/node_api_check.go index 8b3eef1..dcf62d3 100644 --- a/internal/fusefrontend/node_api_check.go +++ b/internal/fusefrontend/node_api_check.go @@ -4,9 +4,11 @@ import ( "github.com/hanwen/go-fuse/v2/fs" ) +// Check that we have implemented the interfaces var _ = (fs.NodeGetattrer)((*Node)(nil)) var _ = (fs.NodeLookuper)((*Node)(nil)) var _ = (fs.NodeReaddirer)((*Node)(nil)) var _ = (fs.NodeCreater)((*Node)(nil)) var _ = (fs.NodeMkdirer)((*Node)(nil)) var _ = (fs.NodeRmdirer)((*Node)(nil)) +var _ = (fs.NodeUnlinker)((*Node)(nil)) diff --git a/internal/fusefrontend/node_dir_ops.go b/internal/fusefrontend/node_dir_ops.go index b4bce1b..8aa79ba 100644 --- a/internal/fusefrontend/node_dir_ops.go +++ b/internal/fusefrontend/node_dir_ops.go @@ -139,6 +139,10 @@ func (n *Node) Mkdir(ctx context.Context, name string, mode uint32, out *fuse.En return ch, 0 } +// Readdir - FUSE call. +// +// This function is symlink-safe through use of openBackingDir() and +// ReadDirIVAt(). func (n *Node) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) { rn := n.rootNode() p := n.path() |