96 lines
2.5 KiB
Go
96 lines
2.5 KiB
Go
package overlayfs
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import (
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"os"
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"time"
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"github.com/spf13/afero"
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)
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// Chmod changes the mode of the named file to mode.
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func (ofs *OverlayFs) Chmod(name string, mode os.FileMode) error {
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if !ofs.firstWritable {
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return os.ErrPermission
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}
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return ofs.writeFs().Chmod(name, mode)
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}
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// Chown changes the uid and gid of the named file.
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func (ofs *OverlayFs) Chown(name string, uid, gid int) error {
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if !ofs.firstWritable {
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return os.ErrPermission
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}
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return ofs.writeFs().Chown(name, uid, gid)
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}
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// Chtimes changes the access and modification times of the named file
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func (ofs *OverlayFs) Chtimes(name string, atime, mtime time.Time) error {
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if !ofs.firstWritable {
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return os.ErrPermission
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}
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return ofs.writeFs().Chtimes(name, atime, mtime)
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}
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// Mkdir creates a directory in the filesystem, return an error if any
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// happens.
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func (ofs *OverlayFs) Mkdir(name string, perm os.FileMode) error {
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if !ofs.firstWritable {
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return os.ErrPermission
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}
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return ofs.writeFs().Mkdir(name, perm)
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}
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// MkdirAll creates a directory path and all parents that does not exist
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// yet.
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func (ofs *OverlayFs) MkdirAll(path string, perm os.FileMode) error {
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if !ofs.firstWritable {
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return os.ErrPermission
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}
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return ofs.writeFs().MkdirAll(path, perm)
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}
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// OpenFile opens a file using the given flags and the given mode.
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func (ofs *OverlayFs) OpenFile(name string, flag int, perm os.FileMode) (afero.File, error) {
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if flag&(os.O_WRONLY|os.O_RDWR|os.O_APPEND|os.O_CREATE|os.O_TRUNC) != 0 {
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if !ofs.firstWritable {
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return nil, os.ErrPermission
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}
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return ofs.writeFs().OpenFile(name, flag, perm)
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}
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return ofs.Open(name)
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}
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// Remove removes a file identified by name, returning an error, if any
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// happens.
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func (ofs *OverlayFs) Remove(name string) error {
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if !ofs.firstWritable {
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return os.ErrPermission
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}
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return ofs.writeFs().Remove(name)
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}
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// RemoveAll removes a directory path and any children it contains. It
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// does not fail if the path does not exist (return nil).
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func (ofs *OverlayFs) RemoveAll(path string) error {
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if !ofs.firstWritable {
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return os.ErrPermission
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}
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return ofs.writeFs().RemoveAll(path)
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}
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// Rename renames a file.
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func (ofs *OverlayFs) Rename(oldname, newname string) error {
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if !ofs.firstWritable {
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return os.ErrPermission
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}
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return ofs.writeFs().Rename(oldname, newname)
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}
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// Create creates a file in the filesystem, returning the file and an
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// error, if any happens.
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func (ofs *OverlayFs) Create(name string) (afero.File, error) {
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if !ofs.firstWritable {
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return nil, os.ErrPermission
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}
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return ofs.writeFs().Create(name)
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}
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