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https://github.com/reactos/syzkaller.git
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c487cd4633
Image takes too many arguments, so we need to do lots of forwarding, adding new argumnets is painful and most OSes are not interested in lots of arguments. Combine all arguments into a params struct.
98 lines
2.7 KiB
Go
98 lines
2.7 KiB
Go
// Copyright 2019 syzkaller project authors. All rights reserved.
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// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
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package build
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import (
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"fmt"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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"time"
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"github.com/google/syzkaller/pkg/osutil"
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)
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type freebsd struct{}
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func (ctx freebsd) build(params *Params) error {
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confDir := fmt.Sprintf("%v/sys/%v/conf/", params.KernelDir, params.TargetArch)
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confFile := "SYZKALLER"
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config := params.Config
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if config == nil {
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config = []byte(`
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include "./GENERIC"
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ident SYZKALLER
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options COVERAGE
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options KCOV
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options DEBUG_VFS_LOCKS
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options DIAGNOSTIC
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`)
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}
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if err := osutil.WriteFile(filepath.Join(confDir, confFile), config); err != nil {
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return err
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}
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objPrefix := filepath.Join(params.KernelDir, "obj")
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if err := ctx.make(params.KernelDir, objPrefix, "kernel-toolchain", "-DNO_CLEAN"); err != nil {
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return err
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}
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if err := ctx.make(params.KernelDir, objPrefix, "buildkernel", fmt.Sprintf("KERNCONF=%v", confFile)); err != nil {
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return err
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}
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kernelObjDir := filepath.Join(objPrefix, params.KernelDir,
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fmt.Sprintf("%v.%v", params.TargetArch, params.TargetArch), "sys", confFile)
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for _, s := range []struct{ dir, src, dst string }{
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{params.UserspaceDir, "image", "image"},
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{params.UserspaceDir, "key", "key"},
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{kernelObjDir, "kernel.full", "obj/kernel.full"},
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} {
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fullSrc := filepath.Join(s.dir, s.src)
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fullDst := filepath.Join(params.OutputDir, s.dst)
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if err := osutil.CopyFile(fullSrc, fullDst); err != nil {
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return fmt.Errorf("failed to copy %v -> %v: %v", fullSrc, fullDst, err)
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}
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}
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script := fmt.Sprintf(`
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set -eux
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md=$(sudo mdconfig -a -t vnode image)
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partn=$(gpart show /dev/${md} | awk '/freebsd-ufs/{print $3}' | head -n 1)
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tmpdir=$(mktemp -d)
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sudo mount /dev/${md}p${partn} $tmpdir
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sudo MAKEOBJDIRPREFIX=%s make -C %s installkernel KERNCONF=%s DESTDIR=$tmpdir
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echo 'pf_load="YES"' | sudo tee -a /boot/loader.conf
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sudo umount $tmpdir
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sudo mdconfig -d -u ${md#md}
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`, objPrefix, params.KernelDir, confFile)
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if debugOut, err := osutil.RunCmd(10*time.Minute, params.OutputDir, "/bin/sh", "-c", script); err != nil {
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return fmt.Errorf("error copying kernel: %v\n%v", err, debugOut)
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}
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return nil
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}
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func (ctx freebsd) clean(kernelDir, targetArch string) error {
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objPrefix := filepath.Join(kernelDir, "obj")
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return ctx.make(kernelDir, objPrefix, "cleanworld")
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}
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func (ctx freebsd) make(kernelDir string, objPrefix string, makeArgs ...string) error {
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args := append([]string{
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fmt.Sprintf("MAKEOBJDIRPREFIX=%v", objPrefix),
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"make",
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"-C", kernelDir,
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"-j", strconv.Itoa(runtime.NumCPU()),
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}, makeArgs...)
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_, err := osutil.RunCmd(3*time.Hour, kernelDir, "sh", "-c", strings.Join(args, " "))
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return err
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}
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