From 8ef9b0105260847588b204fca6246c454a67d893 Mon Sep 17 00:00:00 2001
From: Lomanic <lomanic@hotmail.fr>
Date: Sun, 11 Nov 2018 19:05:34 +0100
Subject: [PATCH] Fix process.Foreground for BSDs, add openbsd implementation

---
 process/process_darwin.go  |  2 +-
 process/process_freebsd.go |  2 +-
 process/process_openbsd.go | 17 +++++++++++++++++
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/process/process_darwin.go b/process/process_darwin.go
index b55c3d2de..ca0f18763 100644
--- a/process/process_darwin.go
+++ b/process/process_darwin.go
@@ -251,7 +251,7 @@ func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
 	if err != nil {
 		return false, err
 	}
-	out, err := invoke.CommandWithContext(ctx, ps, "-o", "stat=", "-p", string(pid))
+	out, err := invoke.CommandWithContext(ctx, ps, "-o", "stat=", "-p", strconv.Itoa(int(pid)))
 	if err != nil {
 		return false, err
 	}
diff --git a/process/process_freebsd.go b/process/process_freebsd.go
index 01f36596f..d5fc62d4c 100644
--- a/process/process_freebsd.go
+++ b/process/process_freebsd.go
@@ -181,7 +181,7 @@ func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
 	if err != nil {
 		return false, err
 	}
-	out, err := invoke.CommandWithContext(ctx, ps, "-o", "stat=", "-p", string(pid))
+	out, err := invoke.CommandWithContext(ctx, ps, "-o", "stat=", "-p", strconv.Itoa(int(pid)))
 	if err != nil {
 		return false, err
 	}
diff --git a/process/process_openbsd.go b/process/process_openbsd.go
index b7b2cba00..f9e0a0867 100644
--- a/process/process_openbsd.go
+++ b/process/process_openbsd.go
@@ -162,6 +162,23 @@ func (p *Process) StatusWithContext(ctx context.Context) (string, error) {
 
 	return s, nil
 }
+func (p *Process) Foreground() (bool, error) {
+	return p.ForegroundWithContext(context.Background())
+}
+
+func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
+	// see https://github.com/shirou/gopsutil/issues/596#issuecomment-432707831 for implementation details
+	pid := p.Pid
+	ps, err := exec.LookPath("ps")
+	if err != nil {
+		return false, err
+	}
+	out, err := invoke.CommandWithContext(ctx, ps, "-o", "stat=", "-p", strconv.Itoa(int(pid)))
+	if err != nil {
+		return false, err
+	}
+	return strings.IndexByte(string(out), '+') != -1, nil
+}
 func (p *Process) Uids() ([]int32, error) {
 	return p.UidsWithContext(context.Background())
 }