all: use os/exec instead of internal/execabs

We added internal/execabs back in January 2021 in order to fix
a security problem caused by os/exec's handling of the current
directory. Now that os/exec has that code, internal/execabs is
superfluous and can be deleted.

This commit rewrites all the imports back to os/exec and
deletes internal/execabs.

For #43724.

Change-Id: Ib9736baf978be2afd42a1225e2ab3fd5d33d19df
Reviewed-on: https://go-review.googlesource.com/c/go/+/381375
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

1 files changed, 0 insertions, 36 deletions

diff --git a/src/internal/execabs/execabs.go b/src/internal/execabs/execabs.go
deleted file mode 100644
index 5f60fbb119..0000000000
--- a/src/internal/execabs/execabs.go
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2021 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package execabs is a drop-in replacement for os/exec
-// that requires PATH lookups to find absolute paths.
-// That is, execabs.Command("cmd") runs the same PATH lookup
-// as exec.Command("cmd"), but if the result is a path
-// which is relative, the Run and Start methods will report
-// an error instead of running the executable.
-package execabs
-
-import (
-	"context"
-	"os/exec"
-)
-
-var ErrNotFound = exec.ErrNotFound
-
-type (
-	Cmd       = exec.Cmd
-	Error     = exec.Error
-	ExitError = exec.ExitError
-)
-
-func LookPath(file string) (string, error) {
-	return exec.LookPath(file)
-}
-
-func CommandContext(ctx context.Context, name string, arg ...string) *exec.Cmd {
-	return exec.CommandContext(ctx, name, arg...)
-}
-
-func Command(name string, arg ...string) *exec.Cmd {
-	return exec.Command(name, arg...)
-}