diff options
Diffstat (limited to 'src/pkg/os/file_plan9.go')
| -rw-r--r-- | src/pkg/os/file_plan9.go | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/pkg/os/file_plan9.go b/src/pkg/os/file_plan9.go index d6d39a899..708163ee1 100644 --- a/src/pkg/os/file_plan9.go +++ b/src/pkg/os/file_plan9.go @@ -133,6 +133,9 @@ func OpenFile(name string, flag int, perm FileMode) (file *File, err error) { // Close closes the File, rendering it unusable for I/O. // It returns an error, if any. func (f *File) Close() error { + if f == nil { + return ErrInvalid + } return f.file.close() } @@ -156,6 +159,9 @@ func (file *file) close() error { // Stat returns the FileInfo structure describing file. // If there is an error, it will be of type *PathError. func (f *File) Stat() (fi FileInfo, err error) { + if f == nil { + return nil, ErrInvalid + } d, err := dirstat(f) if err != nil { return nil, err @@ -167,8 +173,11 @@ func (f *File) Stat() (fi FileInfo, err error) { // It does not change the I/O offset. // If there is an error, it will be of type *PathError. func (f *File) Truncate(size int64) error { - var d syscall.Dir + if f == nil { + return ErrInvalid + } + var d syscall.Dir d.Null() d.Length = size @@ -188,6 +197,9 @@ const chmodMask = uint32(syscall.DMAPPEND | syscall.DMEXCL | syscall.DMTMP | Mod // Chmod changes the mode of the file to mode. // If there is an error, it will be of type *PathError. func (f *File) Chmod(mode FileMode) error { + if f == nil { + return ErrInvalid + } var d syscall.Dir odir, e := dirstat(f) @@ -419,6 +431,9 @@ func Lchown(name string, uid, gid int) error { // Chown changes the numeric uid and gid of the named file. // If there is an error, it will be of type *PathError. func (f *File) Chown(uid, gid int) error { + if f == nil { + return ErrInvalid + } return &PathError{"chown", f.name, syscall.EPLAN9} } |