diff options
Diffstat (limited to 'src/pkg/os/file.go')
| -rw-r--r-- | src/pkg/os/file.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/pkg/os/file.go b/src/pkg/os/file.go index 32cac6d89..2dd1fcf28 100644 --- a/src/pkg/os/file.go +++ b/src/pkg/os/file.go @@ -174,6 +174,9 @@ func (f *File) WriteAt(b []byte, off int64) (n int, err error) { // relative to the current offset, and 2 means relative to the end. // It returns the new offset and an error, if any. func (f *File) Seek(offset int64, whence int) (ret int64, err error) { + if f == nil { + return 0, ErrInvalid + } r, e := f.seek(offset, whence) if e == nil && f.dirinfo != nil && r != 0 { e = syscall.EISDIR @@ -216,6 +219,9 @@ func Chdir(dir string) error { // which must be a directory. // If there is an error, it will be of type *PathError. func (f *File) Chdir() error { + if f == nil { + return ErrInvalid + } if e := syscall.Fchdir(f.fd); e != nil { return &PathError{"chdir", f.name, e} } @@ -238,3 +244,6 @@ func Open(name string) (file *File, err error) { func Create(name string) (file *File, err error) { return OpenFile(name, O_RDWR|O_CREATE|O_TRUNC, 0666) } + +// lstat is overridden in tests. +var lstat = Lstat |