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If purging is enabled, overwriting a file with a file of the same or smaller size will not result in an error. It is now possible to change the purging mode on an existing sized filesystem.
55 lines
1.1 KiB
Go
55 lines
1.1 KiB
Go
package fs
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import (
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"io"
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"os"
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)
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type readOnlyFilesystem struct {
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Filesystem
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}
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func NewReadOnlyFilesystem(fs Filesystem) (Filesystem, error) {
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r := &readOnlyFilesystem{
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Filesystem: fs,
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}
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return r, nil
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}
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func (r *readOnlyFilesystem) Symlink(oldname, newname string) error {
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return os.ErrPermission
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}
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func (r *readOnlyFilesystem) WriteFileReader(path string, rd io.Reader) (int64, bool, error) {
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return -1, false, os.ErrPermission
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}
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func (r *readOnlyFilesystem) WriteFile(path string, data []byte) (int64, bool, error) {
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return -1, false, os.ErrPermission
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}
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func (r *readOnlyFilesystem) WriteFileSafe(path string, data []byte) (int64, bool, error) {
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return -1, false, os.ErrPermission
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}
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func (r *readOnlyFilesystem) MkdirAll(path string, perm os.FileMode) error {
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return os.ErrPermission
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}
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func (r *readOnlyFilesystem) Remove(path string) int64 {
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return -1
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}
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func (r *readOnlyFilesystem) RemoveAll() int64 {
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return 0
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}
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func (r *readOnlyFilesystem) Purge(size int64) int64 {
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return 0
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}
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func (r *readOnlyFilesystem) Resize(size int64, purge bool) error {
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return os.ErrPermission
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}
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