diff options
Diffstat (limited to 'libgo/go/os/exec_unix.go')
| -rw-r--r-- | libgo/go/os/exec_unix.go | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/libgo/go/os/exec_unix.go b/libgo/go/os/exec_unix.go index 5572e628e6..ed97f85e22 100644 --- a/libgo/go/os/exec_unix.go +++ b/libgo/go/os/exec_unix.go @@ -2,7 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -// +build darwin dragonfly freebsd linux netbsd openbsd +// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris package os @@ -34,15 +34,26 @@ func (p *Process) wait() (ps *ProcessState, err error) { return ps, nil } +var errFinished = errors.New("os: process already finished") + func (p *Process) signal(sig Signal) error { + if p.Pid == -1 { + return errors.New("os: process already released") + } + if p.Pid == 0 { + return errors.New("os: process not initialized") + } if p.done() { - return errors.New("os: process already finished") + return errFinished } s, ok := sig.(syscall.Signal) if !ok { return errors.New("os: unsupported signal type") } if e := syscall.Kill(p.Pid, s); e != nil { + if e == syscall.ESRCH { + return errFinished + } return e } return nil |