all: remove akaros support

Akaros support is unused, it was shutdown on syzbot for a while,
the akaros development seems to be frozen for years as well.
We have a bunch of hacks for Akaros since it supported
only super old gcc and haven't supported Go. Remove it.

2 files changed, 0 insertions, 132 deletions

diff --git a/pkg/build/akaros.go b/pkg/build/akaros.go
deleted file mode 100644
index 67b044f04..000000000
--- a/pkg/build/akaros.go
+++ /dev/null
@@ -1,131 +0,0 @@
-// Copyright 2018 syzkaller project authors. All rights reserved.
-// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
-
-package build
-
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-	"runtime"
-	"strconv"
-	"time"
-
-	"github.com/google/syzkaller/pkg/osutil"
-)
-
-type akaros struct{}
-
-func (ctx akaros) build(params Params) (ImageDetails, error) {
-	configFile := filepath.Join(params.KernelDir, ".config")
-	if err := osutil.WriteFile(configFile, params.Config); err != nil {
-		return ImageDetails{}, fmt.Errorf("failed to write config file: %w", err)
-	}
-	if err := osutil.SandboxChown(configFile); err != nil {
-		return ImageDetails{}, err
-	}
-	sshkey := filepath.Join(params.KernelDir, "key")
-	sshkeyPub := sshkey + ".pub"
-	os.Remove(sshkey)
-	os.Remove(sshkeyPub)
-	if _, err := osutil.RunCmd(10*time.Minute, "", "ssh-keygen", "-t", "rsa", "-b", "2048",
-		"-N", "", "-C", "", "-f", sshkey); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := osutil.SandboxChown(sshkeyPub); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := ctx.make(params.KernelDir, "", "olddefconfig", "ARCH=x86"); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := ctx.make(params.KernelDir, "", "xcc"); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := ctx.make(params.KernelDir, "tools/dev-libs/elfutils", "install"); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := ctx.make(params.KernelDir, "", "apps-install"); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := ctx.make(params.KernelDir, "", "fill-kfs"); err != nil {
-		return ImageDetails{}, err
-	}
-	targetKey := filepath.Join(params.KernelDir, "kern", "kfs", ".ssh", "authorized_keys")
-	if err := osutil.Rename(sshkeyPub, targetKey); err != nil {
-		return ImageDetails{}, err
-	}
-	const init = `#!/bin/bash
-/ifconfig
-dropbear -F 2>db_out &
-bash
-`
-	initFile := filepath.Join(params.KernelDir, "kern", "kfs", "init.sh")
-	if err := osutil.WriteFile(initFile, []byte(init)); err != nil {
-		return ImageDetails{}, fmt.Errorf("failed to write init script: %w", err)
-	}
-	if err := osutil.SandboxChown(initFile); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := os.Chmod(initFile, 0770); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := ctx.cmd(params.KernelDir, "dropbear", "./CONFIGURE_AKAROS"); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := ctx.make(params.KernelDir, "dropbear/build"); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := ctx.make(params.KernelDir, "dropbear/build", "install"); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := ctx.make(params.KernelDir, ""); err != nil {
-		return ImageDetails{}, err
-	}
-	if err := osutil.WriteFile(filepath.Join(params.OutputDir, "image"), nil); err != nil {
-		return ImageDetails{}, fmt.Errorf("failed to write image file: %w", err)
-	}
-	for src, dst := range map[string]string{
-		".config":                    "kernel.config",
-		"key":                        "key",
-		"obj/kern/akaros-kernel":     "kernel",
-		"obj/kern/akaros-kernel-64b": "obj/akaros-kernel-64b",
-	} {
-		fullSrc := filepath.Join(params.KernelDir, filepath.FromSlash(src))
-		fullDst := filepath.Join(params.OutputDir, filepath.FromSlash(dst))
-		if err := osutil.CopyFile(fullSrc, fullDst); err != nil {
-			return ImageDetails{}, fmt.Errorf("failed to copy %v: %w", src, err)
-		}
-	}
-	return ImageDetails{}, nil
-}
-
-func (ctx akaros) clean(kernelDir, targetArch string) error {
-	// Note: this does not clean toolchain and elfutils.
-	return ctx.make(kernelDir, "", "realclean")
-}
-
-func (ctx akaros) make(kernelDir, runDir string, args ...string) error {
-	args = append([]string{"-j", strconv.Itoa(runtime.NumCPU())}, args...)
-	return ctx.cmd(kernelDir, runDir, "make", args...)
-}
-
-func (ctx akaros) cmd(kernelDir, runDir, bin string, args ...string) error {
-	cmd := osutil.Command(bin, args...)
-	if err := osutil.Sandbox(cmd, true, false); err != nil {
-		return err
-	}
-	cmd.Dir = kernelDir
-	if runDir != "" {
-		cmd.Dir = filepath.Join(kernelDir, filepath.FromSlash(runDir))
-	}
-	cmd.Env = append([]string{}, os.Environ()...)
-	cmd.Env = append(cmd.Env, []string{
-		"MAKE_JOBS=" + strconv.Itoa(runtime.NumCPU()),
-		"AKAROS_ROOT=" + kernelDir,
-		"AKAROS_TOOLCHAINS=" + filepath.Join(kernelDir, "toolchain"),
-		"PATH=" + filepath.Join(kernelDir, "toolchain", "x86_64-ucb-akaros-gcc", "bin") +
-			string(filepath.ListSeparator) + os.Getenv("PATH"),
-	}...)
-	_, err := osutil.Run(time.Hour, cmd)
-	return err
-}
diff --git a/pkg/build/build.go b/pkg/build/build.go
index 52873e3b2..a489f04dc 100644
--- a/pkg/build/build.go
+++ b/pkg/build/build.go
@@ -144,7 +144,6 @@ func getBuilder(targetOS, targetArch, vmType string) (builder, error) {
 	builders := map[string]builder{
 		targets.Linux:   linux{},
 		targets.Fuchsia: fuchsia{},
-		targets.Akaros:  akaros{},
 		targets.OpenBSD: openbsd{},
 		targets.NetBSD:  netbsd{},
 		targets.FreeBSD: freebsd{},