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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2025 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package vfs
import (
"io/fs"
"path/filepath"
)
// Stat returns a [fs.FileInfo] describing the named file.
func (v *VFS) Stat(name string) (fs.FileInfo, error) {
// Find the mount dominating the given name.
v.mu.RLock()
pd := v.pathDominator(name)
v.mu.RUnlock()
// Stat the path through the file system.
fsFi, err := pd.mount.fsFS.Stat(pd.fsPath)
if err != nil {
// Unpack PathError this may have returned as that error
// contains paths that make sense in the specific [fs.FS] attached
// to the super-block, but not necessarily in the VFS.
return nil, &fs.PathError{Op: "stat", Path: name, Err: unpackPathError(err)}
}
// Wrap the returned [fs.FileInfo] to obscure bind-mounted names.
vfsFi := &fileInfo{FileInfo: fsFi, name: filepath.Base(name)}
return vfsFi, nil
}
// file wraps a [fs.FileInfo] to obscure the original name.
type fileInfo struct {
fs.FileInfo
name string // Name, possibly obscured by bind-mounts.
}
// Name returns the name of the file.
func (fi *fileInfo) Name() string { return fi.name }
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