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makebootable_test.go
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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2014-2020 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package boot_test
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/asserts"
"github.com/snapcore/snapd/boot"
"github.com/snapcore/snapd/boot/boottest"
"github.com/snapcore/snapd/bootloader"
"github.com/snapcore/snapd/bootloader/assets"
"github.com/snapcore/snapd/bootloader/bootloadertest"
"github.com/snapcore/snapd/bootloader/grubenv"
"github.com/snapcore/snapd/bootloader/ubootenv"
"github.com/snapcore/snapd/dirs"
"github.com/snapcore/snapd/gadget"
"github.com/snapcore/snapd/osutil"
"github.com/snapcore/snapd/secboot"
"github.com/snapcore/snapd/seed"
"github.com/snapcore/snapd/snap"
"github.com/snapcore/snapd/snap/snapfile"
"github.com/snapcore/snapd/snap/snaptest"
"github.com/snapcore/snapd/testutil"
"github.com/snapcore/snapd/timings"
)
type makeBootableSuite struct {
baseBootenvSuite
bootloader *bootloadertest.MockBootloader
}
var _ = Suite(&makeBootableSuite{})
func (s *makeBootableSuite) SetUpTest(c *C) {
s.baseBootenvSuite.SetUpTest(c)
s.bootloader = bootloadertest.Mock("mock", c.MkDir())
s.forceBootloader(s.bootloader)
}
func makeSnap(c *C, name, yaml string, revno snap.Revision) (fn string, info *snap.Info) {
return makeSnapWithFiles(c, name, yaml, revno, nil)
}
func makeSnapWithFiles(c *C, name, yaml string, revno snap.Revision, files [][]string) (fn string, info *snap.Info) {
si := &snap.SideInfo{
RealName: name,
Revision: revno,
}
fn = snaptest.MakeTestSnapWithFiles(c, yaml, files)
snapf, err := snapfile.Open(fn)
c.Assert(err, IsNil)
info, err = snap.ReadInfoFromSnapFile(snapf, si)
c.Assert(err, IsNil)
return fn, info
}
func (s *makeBootableSuite) TestMakeBootable(c *C) {
bootloader.Force(nil)
model := boottest.MakeMockModel()
grubCfg := []byte("#grub cfg")
unpackedGadgetDir := c.MkDir()
err := ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub.conf"), grubCfg, 0644)
c.Assert(err, IsNil)
seedSnapsDirs := filepath.Join(s.rootdir, "/var/lib/snapd/seed", "snaps")
err = os.MkdirAll(seedSnapsDirs, 0755)
c.Assert(err, IsNil)
baseFn, baseInfo := makeSnap(c, "core18", `name: core18
type: base
version: 4.0
`, snap.R(3))
baseInSeed := filepath.Join(seedSnapsDirs, baseInfo.Filename())
err = os.Rename(baseFn, baseInSeed)
c.Assert(err, IsNil)
kernelFn, kernelInfo := makeSnap(c, "pc-kernel", `name: pc-kernel
type: kernel
version: 4.0
`, snap.R(5))
kernelInSeed := filepath.Join(seedSnapsDirs, kernelInfo.Filename())
err = os.Rename(kernelFn, kernelInSeed)
c.Assert(err, IsNil)
bootWith := &boot.BootableSet{
Base: baseInfo,
BasePath: baseInSeed,
Kernel: kernelInfo,
KernelPath: kernelInSeed,
UnpackedGadgetDir: unpackedGadgetDir,
}
err = boot.MakeBootable(model, s.rootdir, bootWith, nil)
c.Assert(err, IsNil)
// check the bootloader config
seedGenv := grubenv.NewEnv(filepath.Join(s.rootdir, "boot/grub/grubenv"))
c.Assert(seedGenv.Load(), IsNil)
c.Check(seedGenv.Get("snap_kernel"), Equals, "pc-kernel_5.snap")
c.Check(seedGenv.Get("snap_core"), Equals, "core18_3.snap")
c.Check(seedGenv.Get("snap_menuentry"), Equals, "My Model")
// check symlinks from snap blob dir
kernelBlob := filepath.Join(dirs.SnapBlobDirUnder(s.rootdir), kernelInfo.Filename())
dst, err := os.Readlink(filepath.Join(dirs.SnapBlobDirUnder(s.rootdir), kernelInfo.Filename()))
c.Assert(err, IsNil)
c.Check(dst, Equals, "../seed/snaps/pc-kernel_5.snap")
c.Check(kernelBlob, testutil.FilePresent)
baseBlob := filepath.Join(dirs.SnapBlobDirUnder(s.rootdir), baseInfo.Filename())
dst, err = os.Readlink(filepath.Join(dirs.SnapBlobDirUnder(s.rootdir), baseInfo.Filename()))
c.Assert(err, IsNil)
c.Check(dst, Equals, "../seed/snaps/core18_3.snap")
c.Check(baseBlob, testutil.FilePresent)
// check that the bootloader (grub here) configuration was copied
c.Check(filepath.Join(s.rootdir, "boot", "grub/grub.cfg"), testutil.FileEquals, grubCfg)
}
type makeBootable20Suite struct {
baseBootenvSuite
bootloader *bootloadertest.MockRecoveryAwareBootloader
}
type makeBootable20UbootSuite struct {
baseBootenvSuite
bootloader *bootloadertest.MockExtractedRecoveryKernelImageBootloader
}
var _ = Suite(&makeBootable20Suite{})
var _ = Suite(&makeBootable20UbootSuite{})
func (s *makeBootable20Suite) SetUpTest(c *C) {
s.baseBootenvSuite.SetUpTest(c)
s.bootloader = bootloadertest.Mock("mock", c.MkDir()).RecoveryAware()
s.forceBootloader(s.bootloader)
}
func (s *makeBootable20UbootSuite) SetUpTest(c *C) {
s.baseBootenvSuite.SetUpTest(c)
s.bootloader = bootloadertest.Mock("mock", c.MkDir()).ExtractedRecoveryKernelImage()
s.forceBootloader(s.bootloader)
}
func (s *makeBootable20Suite) TestMakeBootable20(c *C) {
bootloader.Force(nil)
model := boottest.MakeMockUC20Model()
unpackedGadgetDir := c.MkDir()
grubRecoveryCfg := []byte("#grub-recovery cfg")
grubRecoveryCfgAsset := []byte("#grub-recovery cfg from assets")
err := ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub-recovery.conf"), grubRecoveryCfg, 0644)
restore := assets.MockInternal("grub-recovery.cfg", grubRecoveryCfgAsset)
defer restore()
c.Assert(err, IsNil)
grubCfg := []byte("#grub cfg")
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub.conf"), grubCfg, 0644)
c.Assert(err, IsNil)
// on uc20 the seed layout if different
seedSnapsDirs := filepath.Join(s.rootdir, "/snaps")
err = os.MkdirAll(seedSnapsDirs, 0755)
c.Assert(err, IsNil)
baseFn, baseInfo := makeSnap(c, "core20", `name: core20
type: base
version: 5.0
`, snap.R(3))
baseInSeed := filepath.Join(seedSnapsDirs, baseInfo.Filename())
err = os.Rename(baseFn, baseInSeed)
c.Assert(err, IsNil)
kernelFn, kernelInfo := makeSnapWithFiles(c, "pc-kernel", `name: pc-kernel
type: kernel
version: 5.0
`, snap.R(5), [][]string{
{"kernel.efi", "I'm a kernel.efi"},
})
kernelInSeed := filepath.Join(seedSnapsDirs, kernelInfo.Filename())
err = os.Rename(kernelFn, kernelInSeed)
c.Assert(err, IsNil)
label := "20191209"
recoverySystemDir := filepath.Join("/systems", label)
bootWith := &boot.BootableSet{
Base: baseInfo,
BasePath: baseInSeed,
Kernel: kernelInfo,
KernelPath: kernelInSeed,
RecoverySystemDir: recoverySystemDir,
RecoverySystemLabel: label,
UnpackedGadgetDir: unpackedGadgetDir,
Recovery: true,
}
err = boot.MakeBootable(model, s.rootdir, bootWith, nil)
c.Assert(err, IsNil)
// ensure only a single file got copied (the grub.cfg)
files, err := filepath.Glob(filepath.Join(s.rootdir, "EFI/ubuntu/*"))
c.Assert(err, IsNil)
// grub.cfg and grubenv
c.Check(files, HasLen, 2)
// check that the recovery bootloader configuration was installed with
// the correct content
c.Check(filepath.Join(s.rootdir, "EFI/ubuntu/grub.cfg"), testutil.FileEquals, grubRecoveryCfgAsset)
// ensure no /boot was setup
c.Check(filepath.Join(s.rootdir, "boot"), testutil.FileAbsent)
// ensure the correct recovery system configuration was set
seedGenv := grubenv.NewEnv(filepath.Join(s.rootdir, "EFI/ubuntu/grubenv"))
c.Assert(seedGenv.Load(), IsNil)
c.Check(seedGenv.Get("snapd_recovery_system"), Equals, label)
systemGenv := grubenv.NewEnv(filepath.Join(s.rootdir, recoverySystemDir, "grubenv"))
c.Assert(systemGenv.Load(), IsNil)
c.Check(systemGenv.Get("snapd_recovery_kernel"), Equals, "/snaps/pc-kernel_5.snap")
}
func (s *makeBootable20Suite) TestMakeBootable20UnsetRecoverySystemLabelError(c *C) {
model := boottest.MakeMockUC20Model()
unpackedGadgetDir := c.MkDir()
grubRecoveryCfg := []byte("#grub-recovery cfg")
err := ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub-recovery.conf"), grubRecoveryCfg, 0644)
c.Assert(err, IsNil)
grubCfg := []byte("#grub cfg")
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub.conf"), grubCfg, 0644)
c.Assert(err, IsNil)
label := "20191209"
recoverySystemDir := filepath.Join("/systems", label)
bootWith := &boot.BootableSet{
RecoverySystemDir: recoverySystemDir,
UnpackedGadgetDir: unpackedGadgetDir,
Recovery: true,
}
err = boot.MakeBootable(model, s.rootdir, bootWith, nil)
c.Assert(err, ErrorMatches, "internal error: recovery system label unset")
}
func (s *makeBootable20Suite) TestMakeBootable20MultipleRecoverySystemsError(c *C) {
model := boottest.MakeMockUC20Model()
bootWith := &boot.BootableSet{Recovery: true}
err := os.MkdirAll(filepath.Join(s.rootdir, "systems/20191204"), 0755)
c.Assert(err, IsNil)
err = os.MkdirAll(filepath.Join(s.rootdir, "systems/20191205"), 0755)
c.Assert(err, IsNil)
err = boot.MakeBootable(model, s.rootdir, bootWith, nil)
c.Assert(err, ErrorMatches, "cannot make multiple recovery systems bootable yet")
}
func (s *makeBootable20Suite) TestMakeBootable20RunMode(c *C) {
bootloader.Force(nil)
model := boottest.MakeMockUC20Model()
seedSnapsDirs := filepath.Join(s.rootdir, "/snaps")
err := os.MkdirAll(seedSnapsDirs, 0755)
c.Assert(err, IsNil)
// grub on ubuntu-seed
mockSeedGrubDir := filepath.Join(boot.InitramfsUbuntuSeedDir, "EFI", "ubuntu")
mockSeedGrubCfg := filepath.Join(mockSeedGrubDir, "grub.cfg")
err = os.MkdirAll(filepath.Dir(mockSeedGrubCfg), 0755)
c.Assert(err, IsNil)
err = ioutil.WriteFile(mockSeedGrubCfg, []byte("# Snapd-Boot-Config-Edition: 1\n"), 0644)
c.Assert(err, IsNil)
// setup recovery boot assets
err = os.MkdirAll(filepath.Join(boot.InitramfsUbuntuSeedDir, "EFI/boot"), 0755)
c.Assert(err, IsNil)
// SHA3-384: 39efae6545f16e39633fbfbef0d5e9fdd45a25d7df8764978ce4d81f255b038046a38d9855e42e5c7c4024e153fd2e37
err = ioutil.WriteFile(filepath.Join(boot.InitramfsUbuntuSeedDir, "EFI/boot/bootx64.efi"),
[]byte("recovery shim content"), 0644)
c.Assert(err, IsNil)
// SHA3-384: aa3c1a83e74bf6dd40dd64e5c5bd1971d75cdf55515b23b9eb379f66bf43d4661d22c4b8cf7d7a982d2013ab65c1c4c5
err = ioutil.WriteFile(filepath.Join(boot.InitramfsUbuntuSeedDir, "EFI/boot/grubx64.efi"),
[]byte("recovery grub content"), 0644)
c.Assert(err, IsNil)
// grub on ubuntu-boot
mockBootGrubDir := filepath.Join(boot.InitramfsUbuntuBootDir, "EFI", "ubuntu")
mockBootGrubCfg := filepath.Join(mockBootGrubDir, "grub.cfg")
err = os.MkdirAll(filepath.Dir(mockBootGrubCfg), 0755)
c.Assert(err, IsNil)
err = ioutil.WriteFile(mockBootGrubCfg, nil, 0644)
c.Assert(err, IsNil)
unpackedGadgetDir := c.MkDir()
grubRecoveryCfg := []byte("#grub-recovery cfg")
grubRecoveryCfgAsset := []byte("#grub-recovery cfg from assets")
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub-recovery.conf"), grubRecoveryCfg, 0644)
c.Assert(err, IsNil)
restore := assets.MockInternal("grub-recovery.cfg", grubRecoveryCfgAsset)
defer restore()
grubCfg := []byte("#grub cfg")
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub.conf"), grubCfg, 0644)
c.Assert(err, IsNil)
grubCfgAsset := []byte("# Snapd-Boot-Config-Edition: 1\n#grub cfg from assets")
restore = assets.MockInternal("grub.cfg", grubCfgAsset)
defer restore()
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "bootx64.efi"), []byte("shim content"), 0644)
c.Assert(err, IsNil)
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grubx64.efi"), []byte("grub content"), 0644)
c.Assert(err, IsNil)
// make the snaps symlinks so that we can ensure that makebootable follows
// the symlinks and copies the files and not the symlinks
baseFn, baseInfo := makeSnap(c, "core20", `name: core20
type: base
version: 5.0
`, snap.R(3))
baseInSeed := filepath.Join(seedSnapsDirs, baseInfo.Filename())
err = os.Symlink(baseFn, baseInSeed)
c.Assert(err, IsNil)
kernelFn, kernelInfo := makeSnapWithFiles(c, "pc-kernel", `name: pc-kernel
type: kernel
version: 5.0
`, snap.R(5),
[][]string{
{"kernel.efi", "I'm a kernel.efi"},
},
)
kernelInSeed := filepath.Join(seedSnapsDirs, kernelInfo.Filename())
err = os.Symlink(kernelFn, kernelInSeed)
c.Assert(err, IsNil)
bootWith := &boot.BootableSet{
RecoverySystemDir: "20191216",
BasePath: baseInSeed,
Base: baseInfo,
KernelPath: kernelInSeed,
Kernel: kernelInfo,
Recovery: false,
UnpackedGadgetDir: unpackedGadgetDir,
}
// set up observer state
useEncryption := true
obs, err := boot.TrustedAssetsInstallObserverForModel(model, unpackedGadgetDir, useEncryption)
c.Assert(obs, NotNil)
c.Assert(err, IsNil)
runBootStruct := &gadget.LaidOutStructure{
VolumeStructure: &gadget.VolumeStructure{
Role: gadget.SystemBoot,
},
}
// only grubx64.efi gets installed to system-boot
_, err = obs.Observe(gadget.ContentWrite, runBootStruct, boot.InitramfsUbuntuBootDir, "EFI/boot/grubx64.efi",
&gadget.ContentChange{After: filepath.Join(unpackedGadgetDir, "grubx64.efi")})
c.Assert(err, IsNil)
// observe recovery assets
err = obs.ObserveExistingTrustedRecoveryAssets(boot.InitramfsUbuntuSeedDir)
c.Assert(err, IsNil)
// set encryption key
myKey := secboot.EncryptionKey{}
myKey2 := secboot.EncryptionKey{}
for i := range myKey {
myKey[i] = byte(i)
myKey2[i] = byte(128 + i)
}
obs.ChosenEncryptionKeys(myKey, myKey2)
// set a mock recovery kernel
readSystemEssentialCalls := 0
restore = boot.MockSeedReadSystemEssential(func(seedDir, label string, essentialTypes []snap.Type, tm timings.Measurer) (*asserts.Model, []*seed.Snap, error) {
readSystemEssentialCalls++
kernelSnap := &seed.Snap{
Path: "/var/lib/snapd/seed/snaps/pc-kernel_1.snap",
SideInfo: &snap.SideInfo{
Revision: snap.Revision{N: 1},
RealName: "pc-kernel",
},
}
return model, []*seed.Snap{kernelSnap}, nil
})
defer restore()
// set mock key sealing
sealKeysCalls := 0
restore = boot.MockSecbootSealKeys(func(keys []secboot.SealKeyRequest, params *secboot.SealKeysParams) error {
sealKeysCalls++
switch sealKeysCalls {
case 1:
c.Check(keys, HasLen, 1)
c.Check(keys[0].Key, DeepEquals, myKey)
case 2:
c.Check(keys, HasLen, 2)
c.Check(keys[0].Key, DeepEquals, myKey)
c.Check(keys[1].Key, DeepEquals, myKey2)
default:
c.Errorf("unexpected additional call to secboot.SealKeys (call # %d)", sealKeysCalls)
}
c.Assert(params.ModelParams, HasLen, 1)
shim := bootloader.NewBootFile("", filepath.Join(s.rootdir,
"var/lib/snapd/boot-assets/grub/bootx64.efi-39efae6545f16e39633fbfbef0d5e9fdd45a25d7df8764978ce4d81f255b038046a38d9855e42e5c7c4024e153fd2e37"),
bootloader.RoleRecovery)
grub := bootloader.NewBootFile("", filepath.Join(s.rootdir,
"var/lib/snapd/boot-assets/grub/grubx64.efi-aa3c1a83e74bf6dd40dd64e5c5bd1971d75cdf55515b23b9eb379f66bf43d4661d22c4b8cf7d7a982d2013ab65c1c4c5"),
bootloader.RoleRecovery)
runGrub := bootloader.NewBootFile("", filepath.Join(s.rootdir,
"var/lib/snapd/boot-assets/grub/grubx64.efi-5ee042c15e104b825d6bc15c41cdb026589f1ec57ed966dd3f29f961d4d6924efc54b187743fa3a583b62722882d405d"),
bootloader.RoleRunMode)
kernel := bootloader.NewBootFile("/var/lib/snapd/seed/snaps/pc-kernel_1.snap", "kernel.efi", bootloader.RoleRecovery)
runKernel := bootloader.NewBootFile(filepath.Join(s.rootdir, "var/lib/snapd/snaps/pc-kernel_5.snap"), "kernel.efi", bootloader.RoleRunMode)
switch sealKeysCalls {
case 1:
c.Assert(params.ModelParams[0].EFILoadChains, DeepEquals, []*secboot.LoadChain{
secboot.NewLoadChain(shim, secboot.NewLoadChain(grub, secboot.NewLoadChain(kernel))),
secboot.NewLoadChain(shim, secboot.NewLoadChain(grub, secboot.NewLoadChain(runGrub, secboot.NewLoadChain(runKernel)))),
})
c.Assert(params.ModelParams[0].KernelCmdlines, DeepEquals, []string{
"snapd_recovery_mode=recover snapd_recovery_system=20191216 console=ttyS0 console=tty1 panic=-1",
"snapd_recovery_mode=run console=ttyS0 console=tty1 panic=-1",
})
case 2:
c.Assert(params.ModelParams[0].EFILoadChains, DeepEquals, []*secboot.LoadChain{
secboot.NewLoadChain(shim, secboot.NewLoadChain(grub, secboot.NewLoadChain(kernel))),
})
c.Assert(params.ModelParams[0].KernelCmdlines, DeepEquals, []string{
"snapd_recovery_mode=recover snapd_recovery_system=20191216 console=ttyS0 console=tty1 panic=-1",
})
default:
c.Errorf("unexpected additional call to secboot.SealKeys (call # %d)", sealKeysCalls)
}
c.Assert(params.ModelParams[0].Model.DisplayName(), Equals, "My Model")
return nil
})
defer restore()
err = boot.MakeBootable(model, s.rootdir, bootWith, obs)
c.Assert(err, IsNil)
// ensure grub.cfg in boot was installed from internal assets
c.Check(mockBootGrubCfg, testutil.FileEquals, string(grubCfgAsset))
// ensure base/kernel got copied to /var/lib/snapd/snaps
core20Snap := filepath.Join(dirs.SnapBlobDirUnder(boot.InstallHostWritableDir), "core20_3.snap")
pcKernelSnap := filepath.Join(dirs.SnapBlobDirUnder(boot.InstallHostWritableDir), "pc-kernel_5.snap")
c.Check(core20Snap, testutil.FilePresent)
c.Check(pcKernelSnap, testutil.FilePresent)
c.Check(osutil.IsSymlink(core20Snap), Equals, false)
c.Check(osutil.IsSymlink(pcKernelSnap), Equals, false)
// ensure the bootvars got updated the right way
mockSeedGrubenv := filepath.Join(mockSeedGrubDir, "grubenv")
c.Check(mockSeedGrubenv, testutil.FilePresent)
c.Check(mockSeedGrubenv, testutil.FileContains, "snapd_recovery_mode=run")
mockBootGrubenv := filepath.Join(mockBootGrubDir, "grubenv")
c.Check(mockBootGrubenv, testutil.FilePresent)
// ensure that kernel_status is empty, we specifically want this to be set
// to the empty string
// use (?m) to match multi-line file in the regex here, because the file is
// a grubenv with padding #### blocks
c.Check(mockBootGrubenv, testutil.FileMatches, `(?m)^kernel_status=$`)
// check that we have the extracted kernel in the right places, both in the
// old uc16/uc18 location and the new ubuntu-boot partition grub dir
extractedKernel := filepath.Join(mockBootGrubDir, "pc-kernel_5.snap", "kernel.efi")
c.Check(extractedKernel, testutil.FilePresent)
// the new uc20 location
extractedKernelSymlink := filepath.Join(mockBootGrubDir, "kernel.efi")
c.Check(extractedKernelSymlink, testutil.FilePresent)
// ensure modeenv looks correct
ubuntuDataModeEnvPath := filepath.Join(s.rootdir, "/run/mnt/ubuntu-data/system-data/var/lib/snapd/modeenv")
c.Check(ubuntuDataModeEnvPath, testutil.FileEquals, `mode=run
recovery_system=20191216
current_recovery_systems=20191216
base=core20_3.snap
current_kernels=pc-kernel_5.snap
model=my-brand/my-model-uc20
grade=dangerous
current_trusted_boot_assets={"grubx64.efi":["5ee042c15e104b825d6bc15c41cdb026589f1ec57ed966dd3f29f961d4d6924efc54b187743fa3a583b62722882d405d"]}
current_trusted_recovery_boot_assets={"bootx64.efi":["39efae6545f16e39633fbfbef0d5e9fdd45a25d7df8764978ce4d81f255b038046a38d9855e42e5c7c4024e153fd2e37"],"grubx64.efi":["aa3c1a83e74bf6dd40dd64e5c5bd1971d75cdf55515b23b9eb379f66bf43d4661d22c4b8cf7d7a982d2013ab65c1c4c5"]}
current_kernel_command_lines=["snapd_recovery_mode=run console=ttyS0 console=tty1 panic=-1"]
`)
copiedGrubBin := filepath.Join(
dirs.SnapBootAssetsDirUnder(boot.InstallHostWritableDir),
"grub",
"grubx64.efi-5ee042c15e104b825d6bc15c41cdb026589f1ec57ed966dd3f29f961d4d6924efc54b187743fa3a583b62722882d405d",
)
copiedRecoveryGrubBin := filepath.Join(
dirs.SnapBootAssetsDirUnder(boot.InstallHostWritableDir),
"grub",
"grubx64.efi-aa3c1a83e74bf6dd40dd64e5c5bd1971d75cdf55515b23b9eb379f66bf43d4661d22c4b8cf7d7a982d2013ab65c1c4c5",
)
copiedRecoveryShimBin := filepath.Join(
dirs.SnapBootAssetsDirUnder(boot.InstallHostWritableDir),
"grub",
"bootx64.efi-39efae6545f16e39633fbfbef0d5e9fdd45a25d7df8764978ce4d81f255b038046a38d9855e42e5c7c4024e153fd2e37",
)
// only one file in the cache under new root
checkContentGlob(c, filepath.Join(dirs.SnapBootAssetsDirUnder(boot.InstallHostWritableDir), "grub", "*"), []string{
copiedRecoveryShimBin,
copiedGrubBin,
copiedRecoveryGrubBin,
})
// with the right content
c.Check(copiedGrubBin, testutil.FileEquals, "grub content")
c.Check(copiedRecoveryGrubBin, testutil.FileEquals, "recovery grub content")
c.Check(copiedRecoveryShimBin, testutil.FileEquals, "recovery shim content")
// make sure SealKey was called for the run object and the fallback object
c.Check(sealKeysCalls, Equals, 2)
// make sure the marker file for sealed key was created
c.Check(filepath.Join(dirs.SnapFDEDirUnder(boot.InstallHostWritableDir), "sealed-keys"), testutil.FilePresent)
// make sure we wrote the boot chains data file
c.Check(filepath.Join(dirs.SnapFDEDirUnder(boot.InstallHostWritableDir), "boot-chains"), testutil.FilePresent)
}
func (s *makeBootable20Suite) TestMakeBootable20RunModeInstallBootConfigErr(c *C) {
bootloader.Force(nil)
model := boottest.MakeMockUC20Model()
seedSnapsDirs := filepath.Join(s.rootdir, "/snaps")
err := os.MkdirAll(seedSnapsDirs, 0755)
c.Assert(err, IsNil)
// grub on ubuntu-seed
mockSeedGrubDir := filepath.Join(boot.InitramfsUbuntuSeedDir, "EFI", "ubuntu")
err = os.MkdirAll(mockSeedGrubDir, 0755)
c.Assert(err, IsNil)
// no recovery grub.cfg so that test fails if it ever reaches that point
// grub on ubuntu-boot
mockBootGrubDir := filepath.Join(boot.InitramfsUbuntuBootDir, "EFI", "ubuntu")
mockBootGrubCfg := filepath.Join(mockBootGrubDir, "grub.cfg")
err = os.MkdirAll(filepath.Dir(mockBootGrubCfg), 0755)
c.Assert(err, IsNil)
err = ioutil.WriteFile(mockBootGrubCfg, nil, 0644)
c.Assert(err, IsNil)
unpackedGadgetDir := c.MkDir()
// make the snaps symlinks so that we can ensure that makebootable follows
// the symlinks and copies the files and not the symlinks
baseFn, baseInfo := makeSnap(c, "core20", `name: core20
type: base
version: 5.0
`, snap.R(3))
baseInSeed := filepath.Join(seedSnapsDirs, baseInfo.Filename())
err = os.Symlink(baseFn, baseInSeed)
c.Assert(err, IsNil)
kernelFn, kernelInfo := makeSnapWithFiles(c, "pc-kernel", `name: pc-kernel
type: kernel
version: 5.0
`, snap.R(5),
[][]string{
{"kernel.efi", "I'm a kernel.efi"},
},
)
kernelInSeed := filepath.Join(seedSnapsDirs, kernelInfo.Filename())
err = os.Symlink(kernelFn, kernelInSeed)
c.Assert(err, IsNil)
bootWith := &boot.BootableSet{
RecoverySystemDir: "20191216",
BasePath: baseInSeed,
Base: baseInfo,
KernelPath: kernelInSeed,
Kernel: kernelInfo,
Recovery: false,
UnpackedGadgetDir: unpackedGadgetDir,
}
// no grub marker in gadget directory raises an error
err = boot.MakeBootable(model, s.rootdir, bootWith, nil)
c.Assert(err, ErrorMatches, "internal error: cannot identify run system bootloader: cannot determine bootloader")
// set up grub.cfg in gadget
grubCfg := []byte("#grub cfg")
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub.conf"), grubCfg, 0644)
c.Assert(err, IsNil)
// no write access to destination directory
restore := assets.MockInternal("grub.cfg", nil)
defer restore()
err = boot.MakeBootable(model, s.rootdir, bootWith, nil)
c.Assert(err, ErrorMatches, `cannot install managed bootloader assets: internal error: no boot asset for "grub.cfg"`)
}
func (s *makeBootable20Suite) TestMakeBootable20RunModeSealKeyErr(c *C) {
bootloader.Force(nil)
model := boottest.MakeMockUC20Model()
seedSnapsDirs := filepath.Join(s.rootdir, "/snaps")
err := os.MkdirAll(seedSnapsDirs, 0755)
c.Assert(err, IsNil)
// grub on ubuntu-seed
mockSeedGrubDir := filepath.Join(boot.InitramfsUbuntuSeedDir, "EFI", "ubuntu")
mockSeedGrubCfg := filepath.Join(mockSeedGrubDir, "grub.cfg")
err = os.MkdirAll(filepath.Dir(mockSeedGrubCfg), 0755)
c.Assert(err, IsNil)
err = ioutil.WriteFile(mockSeedGrubCfg, []byte("# Snapd-Boot-Config-Edition: 1\n"), 0644)
c.Assert(err, IsNil)
// setup recovery boot assets
err = os.MkdirAll(filepath.Join(boot.InitramfsUbuntuSeedDir, "EFI/boot"), 0755)
c.Assert(err, IsNil)
// SHA3-384: 39efae6545f16e39633fbfbef0d5e9fdd45a25d7df8764978ce4d81f255b038046a38d9855e42e5c7c4024e153fd2e37
err = ioutil.WriteFile(filepath.Join(boot.InitramfsUbuntuSeedDir, "EFI/boot/bootx64.efi"),
[]byte("recovery shim content"), 0644)
c.Assert(err, IsNil)
// SHA3-384: aa3c1a83e74bf6dd40dd64e5c5bd1971d75cdf55515b23b9eb379f66bf43d4661d22c4b8cf7d7a982d2013ab65c1c4c5
err = ioutil.WriteFile(filepath.Join(boot.InitramfsUbuntuSeedDir, "EFI/boot/grubx64.efi"),
[]byte("recovery grub content"), 0644)
c.Assert(err, IsNil)
// grub on ubuntu-boot
mockBootGrubDir := filepath.Join(boot.InitramfsUbuntuBootDir, "EFI", "ubuntu")
mockBootGrubCfg := filepath.Join(mockBootGrubDir, "grub.cfg")
err = os.MkdirAll(filepath.Dir(mockBootGrubCfg), 0755)
c.Assert(err, IsNil)
err = ioutil.WriteFile(mockBootGrubCfg, nil, 0644)
c.Assert(err, IsNil)
unpackedGadgetDir := c.MkDir()
grubRecoveryCfg := []byte("#grub-recovery cfg")
grubRecoveryCfgAsset := []byte("#grub-recovery cfg from assets")
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub-recovery.conf"), grubRecoveryCfg, 0644)
c.Assert(err, IsNil)
restore := assets.MockInternal("grub-recovery.cfg", grubRecoveryCfgAsset)
defer restore()
grubCfg := []byte("#grub cfg")
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grub.conf"), grubCfg, 0644)
c.Assert(err, IsNil)
grubCfgAsset := []byte("# Snapd-Boot-Config-Edition: 1\n#grub cfg from assets")
restore = assets.MockInternal("grub.cfg", grubCfgAsset)
defer restore()
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "bootx64.efi"), []byte("shim content"), 0644)
c.Assert(err, IsNil)
err = ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "grubx64.efi"), []byte("grub content"), 0644)
c.Assert(err, IsNil)
// make the snaps symlinks so that we can ensure that makebootable follows
// the symlinks and copies the files and not the symlinks
baseFn, baseInfo := makeSnap(c, "core20", `name: core20
type: base
version: 5.0
`, snap.R(3))
baseInSeed := filepath.Join(seedSnapsDirs, baseInfo.Filename())
err = os.Symlink(baseFn, baseInSeed)
c.Assert(err, IsNil)
kernelFn, kernelInfo := makeSnapWithFiles(c, "pc-kernel", `name: pc-kernel
type: kernel
version: 5.0
`, snap.R(5),
[][]string{
{"kernel.efi", "I'm a kernel.efi"},
},
)
kernelInSeed := filepath.Join(seedSnapsDirs, kernelInfo.Filename())
err = os.Symlink(kernelFn, kernelInSeed)
c.Assert(err, IsNil)
bootWith := &boot.BootableSet{
RecoverySystemDir: "20191216",
BasePath: baseInSeed,
Base: baseInfo,
KernelPath: kernelInSeed,
Kernel: kernelInfo,
Recovery: false,
UnpackedGadgetDir: unpackedGadgetDir,
}
// set up observer state
useEncryption := true
obs, err := boot.TrustedAssetsInstallObserverForModel(model, unpackedGadgetDir, useEncryption)
c.Assert(obs, NotNil)
c.Assert(err, IsNil)
runBootStruct := &gadget.LaidOutStructure{
VolumeStructure: &gadget.VolumeStructure{
Role: gadget.SystemBoot,
},
}
// only grubx64.efi gets installed to system-boot
_, err = obs.Observe(gadget.ContentWrite, runBootStruct, boot.InitramfsUbuntuBootDir, "EFI/boot/grubx64.efi",
&gadget.ContentChange{After: filepath.Join(unpackedGadgetDir, "grubx64.efi")})
c.Assert(err, IsNil)
// observe recovery assets
err = obs.ObserveExistingTrustedRecoveryAssets(boot.InitramfsUbuntuSeedDir)
c.Assert(err, IsNil)
// set encryption key
myKey := secboot.EncryptionKey{}
myKey2 := secboot.EncryptionKey{}
for i := range myKey {
myKey[i] = byte(i)
myKey2[i] = byte(128 + i)
}
obs.ChosenEncryptionKeys(myKey, myKey2)
// set a mock recovery kernel
readSystemEssentialCalls := 0
restore = boot.MockSeedReadSystemEssential(func(seedDir, label string, essentialTypes []snap.Type, tm timings.Measurer) (*asserts.Model, []*seed.Snap, error) {
readSystemEssentialCalls++
kernelSnap := &seed.Snap{
Path: "/var/lib/snapd/seed/snaps/pc-kernel_1.snap",
SideInfo: &snap.SideInfo{
Revision: snap.Revision{N: 0},
RealName: "pc-kernel",
},
}
return model, []*seed.Snap{kernelSnap}, nil
})
defer restore()
// set mock key sealing
sealKeysCalls := 0
restore = boot.MockSecbootSealKeys(func(keys []secboot.SealKeyRequest, params *secboot.SealKeysParams) error {
sealKeysCalls++
switch sealKeysCalls {
case 1:
c.Check(keys, HasLen, 1)
c.Check(keys[0].Key, DeepEquals, myKey)
case 2:
c.Check(keys, HasLen, 2)
c.Check(keys[0].Key, DeepEquals, myKey)
c.Check(keys[1].Key, DeepEquals, myKey2)
default:
c.Errorf("unexpected additional call to secboot.SealKeys (call # %d)", sealKeysCalls)
}
c.Assert(params.ModelParams, HasLen, 1)
shim := bootloader.NewBootFile("", filepath.Join(s.rootdir,
"var/lib/snapd/boot-assets/grub/bootx64.efi-39efae6545f16e39633fbfbef0d5e9fdd45a25d7df8764978ce4d81f255b038046a38d9855e42e5c7c4024e153fd2e37"),
bootloader.RoleRecovery)
grub := bootloader.NewBootFile("", filepath.Join(s.rootdir,
"var/lib/snapd/boot-assets/grub/grubx64.efi-aa3c1a83e74bf6dd40dd64e5c5bd1971d75cdf55515b23b9eb379f66bf43d4661d22c4b8cf7d7a982d2013ab65c1c4c5"),
bootloader.RoleRecovery)
runGrub := bootloader.NewBootFile("", filepath.Join(s.rootdir,
"var/lib/snapd/boot-assets/grub/grubx64.efi-5ee042c15e104b825d6bc15c41cdb026589f1ec57ed966dd3f29f961d4d6924efc54b187743fa3a583b62722882d405d"),
bootloader.RoleRunMode)
kernel := bootloader.NewBootFile("/var/lib/snapd/seed/snaps/pc-kernel_1.snap", "kernel.efi", bootloader.RoleRecovery)
runKernel := bootloader.NewBootFile(filepath.Join(s.rootdir, "var/lib/snapd/snaps/pc-kernel_5.snap"), "kernel.efi", bootloader.RoleRunMode)
c.Assert(params.ModelParams[0].EFILoadChains, DeepEquals, []*secboot.LoadChain{
secboot.NewLoadChain(shim, secboot.NewLoadChain(grub, secboot.NewLoadChain(kernel))),
secboot.NewLoadChain(shim, secboot.NewLoadChain(grub, secboot.NewLoadChain(runGrub, secboot.NewLoadChain(runKernel)))),
})
c.Assert(params.ModelParams[0].KernelCmdlines, DeepEquals, []string{
"snapd_recovery_mode=recover snapd_recovery_system=20191216 console=ttyS0 console=tty1 panic=-1",
"snapd_recovery_mode=run console=ttyS0 console=tty1 panic=-1",
})
c.Assert(params.ModelParams[0].Model.DisplayName(), Equals, "My Model")
return fmt.Errorf("seal error")
})
defer restore()
err = boot.MakeBootable(model, s.rootdir, bootWith, obs)
c.Assert(err, ErrorMatches, "cannot seal the encryption keys: seal error")
}
func (s *makeBootable20UbootSuite) TestUbootMakeBootable20TraditionalUbootenvFails(c *C) {
bootloader.Force(nil)
model := boottest.MakeMockUC20Model()
unpackedGadgetDir := c.MkDir()
ubootEnv := []byte("#uboot env")
err := ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "uboot.conf"), ubootEnv, 0644)
c.Assert(err, IsNil)
// on uc20 the seed layout if different
seedSnapsDirs := filepath.Join(s.rootdir, "/snaps")
err = os.MkdirAll(seedSnapsDirs, 0755)
c.Assert(err, IsNil)
baseFn, baseInfo := makeSnap(c, "core20", `name: core20
type: base
version: 5.0
`, snap.R(3))
baseInSeed := filepath.Join(seedSnapsDirs, baseInfo.Filename())
err = os.Rename(baseFn, baseInSeed)
c.Assert(err, IsNil)
kernelFn, kernelInfo := makeSnapWithFiles(c, "arm-kernel", `name: arm-kernel
type: kernel
version: 5.0
`, snap.R(5), [][]string{
{"kernel.img", "I'm a kernel"},
{"initrd.img", "...and I'm an initrd"},
{"dtbs/foo.dtb", "foo dtb"},
{"dtbs/bar.dto", "bar dtbo"},
})
kernelInSeed := filepath.Join(seedSnapsDirs, kernelInfo.Filename())
err = os.Rename(kernelFn, kernelInSeed)
c.Assert(err, IsNil)
label := "20191209"
recoverySystemDir := filepath.Join("/systems", label)
bootWith := &boot.BootableSet{
Base: baseInfo,
BasePath: baseInSeed,
Kernel: kernelInfo,
KernelPath: kernelInSeed,
RecoverySystemDir: recoverySystemDir,
RecoverySystemLabel: label,
UnpackedGadgetDir: unpackedGadgetDir,
Recovery: true,
}
// TODO:UC20: enable this use case
err = boot.MakeBootable(model, s.rootdir, bootWith, nil)
c.Assert(err, ErrorMatches, "non-empty uboot.env not supported on UC20 yet")
}
func (s *makeBootable20UbootSuite) TestUbootMakeBootable20BootScr(c *C) {
model := boottest.MakeMockUC20Model()
unpackedGadgetDir := c.MkDir()
// the uboot.conf must be empty for this to work/do the right thing
err := ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "uboot.conf"), nil, 0644)
c.Assert(err, IsNil)
// on uc20 the seed layout if different
seedSnapsDirs := filepath.Join(s.rootdir, "/snaps")
err = os.MkdirAll(seedSnapsDirs, 0755)
c.Assert(err, IsNil)
baseFn, baseInfo := makeSnap(c, "core20", `name: core20
type: base
version: 5.0
`, snap.R(3))
baseInSeed := filepath.Join(seedSnapsDirs, baseInfo.Filename())
err = os.Rename(baseFn, baseInSeed)
c.Assert(err, IsNil)
kernelFn, kernelInfo := makeSnapWithFiles(c, "arm-kernel", `name: arm-kernel
type: kernel
version: 5.0
`, snap.R(5), [][]string{
{"kernel.img", "I'm a kernel"},
{"initrd.img", "...and I'm an initrd"},
{"dtbs/foo.dtb", "foo dtb"},
{"dtbs/bar.dto", "bar dtbo"},
})
kernelInSeed := filepath.Join(seedSnapsDirs, kernelInfo.Filename())
err = os.Rename(kernelFn, kernelInSeed)
c.Assert(err, IsNil)
label := "20191209"
recoverySystemDir := filepath.Join("/systems", label)
bootWith := &boot.BootableSet{
Base: baseInfo,
BasePath: baseInSeed,
Kernel: kernelInfo,
KernelPath: kernelInSeed,
RecoverySystemDir: recoverySystemDir,
RecoverySystemLabel: label,
UnpackedGadgetDir: unpackedGadgetDir,
Recovery: true,
}
err = boot.MakeBootable(model, s.rootdir, bootWith, nil)
c.Assert(err, IsNil)
// since uboot.conf was absent, we won't have installed the uboot.env, as
// it is expected that the gadget assets would have installed boot.scr
// instead
c.Check(filepath.Join(s.rootdir, "uboot.env"), testutil.FileAbsent)
c.Check(s.bootloader.BootVars, DeepEquals, map[string]string{
"snapd_recovery_system": label,
"snapd_recovery_mode": "install",
})
// ensure the correct recovery system configuration was set
c.Check(
s.bootloader.ExtractRecoveryKernelAssetsCalls,
DeepEquals,
[]bootloadertest.ExtractedRecoveryKernelCall{{
RecoverySystemDir: recoverySystemDir,
S: kernelInfo,
}},
)
}
func (s *makeBootable20UbootSuite) TestUbootMakeBootable20RunModeBootSel(c *C) {
bootloader.Force(nil)
model := boottest.MakeMockUC20Model()
seedSnapsDirs := filepath.Join(s.rootdir, "/snaps")
err := os.MkdirAll(seedSnapsDirs, 0755)
c.Assert(err, IsNil)
// uboot on ubuntu-seed
mockSeedUbootBootSel := filepath.Join(boot.InitramfsUbuntuSeedDir, "uboot/ubuntu/boot.sel")
err = os.MkdirAll(filepath.Dir(mockSeedUbootBootSel), 0755)
c.Assert(err, IsNil)
env, err := ubootenv.Create(mockSeedUbootBootSel, 4096)
c.Assert(err, IsNil)
c.Assert(env.Save(), IsNil)
// uboot on ubuntu-boot (as if it was installed when creating the partition)
mockBootUbootBootSel := filepath.Join(boot.InitramfsUbuntuBootDir, "uboot/ubuntu/boot.sel")
err = os.MkdirAll(filepath.Dir(mockBootUbootBootSel), 0755)
c.Assert(err, IsNil)
env, err = ubootenv.Create(mockBootUbootBootSel, 4096)
c.Assert(err, IsNil)
c.Assert(env.Save(), IsNil)
unpackedGadgetDir := c.MkDir()
c.Assert(ioutil.WriteFile(filepath.Join(unpackedGadgetDir, "uboot.conf"), nil, 0644), IsNil)
baseFn, baseInfo := makeSnap(c, "core20", `name: core20
type: base
version: 5.0
`, snap.R(3))
baseInSeed := filepath.Join(seedSnapsDirs, baseInfo.Filename())
err = os.Rename(baseFn, baseInSeed)
c.Assert(err, IsNil)
kernelSnapFiles := [][]string{
{"kernel.img", "I'm a kernel"},
{"initrd.img", "...and I'm an initrd"},
{"dtbs/foo.dtb", "foo dtb"},
{"dtbs/bar.dto", "bar dtbo"},
}
kernelFn, kernelInfo := makeSnapWithFiles(c, "arm-kernel", `name: arm-kernel
type: kernel
version: 5.0
`, snap.R(5), kernelSnapFiles)
kernelInSeed := filepath.Join(seedSnapsDirs, kernelInfo.Filename())
err = os.Rename(kernelFn, kernelInSeed)
c.Assert(err, IsNil)
bootWith := &boot.BootableSet{
RecoverySystemDir: "20191216",
BasePath: baseInSeed,
Base: baseInfo,
KernelPath: kernelInSeed,
Kernel: kernelInfo,
Recovery: false,
UnpackedGadgetDir: unpackedGadgetDir,
}
err = boot.MakeBootable(model, s.rootdir, bootWith, nil)
c.Assert(err, IsNil)
// ensure base/kernel got copied to /var/lib/snapd/snaps
c.Check(filepath.Join(dirs.SnapBlobDirUnder(boot.InstallHostWritableDir), "core20_3.snap"), testutil.FilePresent)
c.Check(filepath.Join(dirs.SnapBlobDirUnder(boot.InstallHostWritableDir), "arm-kernel_5.snap"), testutil.FilePresent)
// ensure the bootvars on ubuntu-seed got updated the right way
mockSeedUbootenv := filepath.Join(boot.InitramfsUbuntuSeedDir, "uboot/ubuntu/boot.sel")
uenvSeed, err := ubootenv.Open(mockSeedUbootenv)
c.Assert(err, IsNil)
c.Assert(uenvSeed.Get("snapd_recovery_mode"), Equals, "run")
// now check ubuntu-boot boot.sel
mockBootUbootenv := filepath.Join(boot.InitramfsUbuntuBootDir, "uboot/ubuntu/boot.sel")
uenvBoot, err := ubootenv.Open(mockBootUbootenv)