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block all write flags instead of checking for O_RDONLY

This commit is contained in:
Hanno Hecker 2015-12-13 18:12:18 +01:00
parent 3b1997ba29
commit 8c337dcc24
1 changed files with 3 additions and 3 deletions
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6
filter_readonly.go
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@ -42,10 +42,10 @@ func (r *ReadOnlyFilter) Remove(n string) error {
} }
func (r *ReadOnlyFilter) OpenFile(name string, flag int, perm os.FileMode) (File, error) { func (r *ReadOnlyFilter) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
if flag&os.O_RDONLY != 0 { if flag&(os.O_WRONLY|syscall.O_RDWR|os.O_APPEND|os.O_CREATE|os.O_TRUNC) != 0 {
return nil, nil return nil, syscall.EPERM
} }
return nil, syscall.EPERM return nil, nil
} }
func (r *ReadOnlyFilter) Open(n string) (File, error) { func (r *ReadOnlyFilter) Open(n string) (File, error) {