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os: diagnose chdir error during StartProcess

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R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5711044
This commit is contained in:
Russ Cox 2012-02-29 15:53:57 -05:00
parent b47cef394b
commit 7aba72baaa
1 changed files with 10 additions and 0 deletions
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10
src/pkg/os/exec_posix.go
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@ -18,6 +18,16 @@ import (
//
// If there is an error, it will be of type *PathError.
func StartProcess(name string, argv []string, attr *ProcAttr) (p *Process, err error) {
// Double-check existence of the directory we want
// to chdir into. We can make the error clearer this way.
if attr != nil && attr.Dir != "" {
if _, err := Stat(attr.Dir); err != nil {
pe := err.(*PathError)
pe.Op = "chdir"
return nil, pe
}
}
sysattr := &syscall.ProcAttr{
Dir: attr.Dir,
Env: attr.Env,