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os: check for valid arguments in windows Readdir

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Fixes #1129.

R=rsc, brainman
CC=Joe Poirier, golang-dev
https://golang.org/cl/2211045
This commit is contained in:
Peter Mundy 2010-09-23 22:06:59 -04:00 committed by Russ Cox
parent 7c9f0f0109
commit bfb127612a
1 changed files with 6 additions and 0 deletions
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6
src/pkg/os/file_windows.go
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@ -113,6 +113,12 @@ func (file *File) Stat() (fi *FileInfo, err Error) {
// A negative count means to read until EOF.
// Readdir returns the array and an Error, if any.
func (file *File) Readdir(count int) (fi []FileInfo, err Error) {
if file == nil || file.fd < 0 {
return nil, EINVAL
}
if !file.isdir() {
return nil, &PathError{"Readdir", file.name, ENOTDIR}
}
di := file.dirinfo
size := count
if size < 0 {