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layout_test.go
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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2019 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 gadget_test
import (
"bytes"
"fmt"
"io"
"os"
"path/filepath"
"strings"
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/gadget"
"github.com/snapcore/snapd/gadget/quantity"
"github.com/snapcore/snapd/kernel"
"github.com/snapcore/snapd/secboot"
)
type layoutTestSuite struct {
dir string
}
var _ = Suite(&layoutTestSuite{})
func (p *layoutTestSuite) SetUpTest(c *C) {
p.dir = c.MkDir()
}
func (p *layoutTestSuite) TestVolumeSize(c *C) {
vol := gadget.Volume{
Structure: []gadget.VolumeStructure{
{Offset: asOffsetPtr(quantity.OffsetMiB), Size: 2 * quantity.SizeMiB, EnclosingVolume: &gadget.Volume{}},
},
}
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(&vol, gadget.OnDiskStructsFromGadget(&vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: &gadget.Volume{
Structure: []gadget.VolumeStructure{
{Offset: asOffsetPtr(quantity.OffsetMiB), Size: 2 * quantity.SizeMiB, EnclosingVolume: &gadget.Volume{}},
},
},
LaidOutStructure: []gadget.LaidOutStructure{{
OnDiskStructure: gadget.OnDiskStructure{
Size: 2 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &gadget.VolumeStructure{
Offset: asOffsetPtr(quantity.OffsetMiB),
Size: 2 * quantity.SizeMiB,
EnclosingVolume: &gadget.Volume{},
},
}},
})
}
func mustParseVolume(c *C, gadgetYaml, volume string) *gadget.Volume {
gi, err := gadget.InfoFromGadgetYaml([]byte(gadgetYaml), nil)
c.Assert(err, IsNil)
v, ok := gi.Volumes[volume]
c.Assert(ok, Equals, true, Commentf("volume %q not found in gadget", volume))
return v
}
func (p *layoutTestSuite) TestLayoutVolumeMinimal(c *C) {
gadgetYaml := `
volumes:
first-image:
bootloader: u-boot
structure:
- type: 00000000-0000-0000-0000-0000deadbeef
size: 400M
- type: 83,00000000-0000-0000-0000-0000feedface
role: system-data
size: 100M
`
vol := mustParseVolume(c, gadgetYaml, "first-image")
c.Assert(vol.Structure, HasLen, 2)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-0000deadbeef",
Size: 400 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "83,00000000-0000-0000-0000-0000feedface",
Size: 100 * quantity.SizeMiB,
StartOffset: 401 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[1],
},
},
})
}
func (p *layoutTestSuite) testLayoutVolumeWithDataPartitions(c *C, encType secboot.EncryptionType) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
filesystem: ext4
filesystem-label: ubuntu-save
role: system-save
size: 1M
- type: 00000000-0000-0000-0000-cc00deadbeef
filesystem: ext4
filesystem-label: ubuntu-data
role: system-data
size: 500M
`
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 2)
opts := &gadget.LayoutOptions{
GadgetRootDir: p.dir,
EncType: encType}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
saveFsLabel := "ubuntu-save"
saveFsType := "ext4"
dataFsLabel := "ubuntu-data"
dataFsType := "ext4"
if encType == secboot.EncryptionTypeLUKS {
saveFsLabel = "ubuntu-save-enc"
saveFsType = "crypto_LUKS"
dataFsLabel = "ubuntu-data-enc"
dataFsType = "crypto_LUKS"
}
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-dd00deadbeef",
Size: 1 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
PartitionFSType: saveFsType,
PartitionFSLabel: saveFsLabel,
},
VolumeStructure: &vol.Structure[0],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-cc00deadbeef",
Size: 500 * quantity.SizeMiB,
StartOffset: 2 * quantity.OffsetMiB,
PartitionFSType: dataFsType,
PartitionFSLabel: dataFsLabel,
},
VolumeStructure: &vol.Structure[1],
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumeWithDataPartitions(c *C) {
p.testLayoutVolumeWithDataPartitions(c, secboot.EncryptionTypeNone)
}
func (p *layoutTestSuite) TestLayoutVolumeWithDataPartitionsEncrypted(c *C) {
p.testLayoutVolumeWithDataPartitions(c, secboot.EncryptionTypeLUKS)
}
func (p *layoutTestSuite) TestLayoutVolumeImplicitOrdering(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 400M
- type: 00000000-0000-0000-0000-cc00deadbeef
role: system-data
size: 500M
- type: 00000000-0000-0000-0000-bb00deadbeef
size: 100M
- type: 00000000-0000-0000-0000-aa00deadbeef
size: 100M
`
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 4)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-dd00deadbeef",
Size: 400 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-cc00deadbeef",
Size: 500 * quantity.SizeMiB,
StartOffset: 401 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[1],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-bb00deadbeef",
Size: 100 * quantity.SizeMiB,
StartOffset: 901 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[2],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-aa00deadbeef",
Size: 100 * quantity.SizeMiB,
StartOffset: 1001 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[3],
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumeExplicitOrdering(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 400M
offset: 800M
- type: 00000000-0000-0000-0000-cc00deadbeef
role: system-data
size: 500M
offset: 200M
- type: 00000000-0000-0000-0000-bb00deadbeef
size: 100M
offset: 1200M
- type: 00000000-0000-0000-0000-aa00deadbeef
size: 100M
offset: 1M
`
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 4)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-aa00deadbeef",
Size: 100 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-cc00deadbeef",
Size: 500 * quantity.SizeMiB,
StartOffset: 200 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[1],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-dd00deadbeef",
Size: 400 * quantity.SizeMiB,
StartOffset: 800 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[2],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-bb00deadbeef",
Size: 100 * quantity.SizeMiB,
StartOffset: 1200 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[3],
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumeMixedOrdering(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 400M
offset: 800M
- type: 00000000-0000-0000-0000-cc00deadbeef
role: system-data
size: 500M
offset: 200M
- type: 00000000-0000-0000-0000-bb00deadbeef
size: 100M
- type: 00000000-0000-0000-0000-aa00deadbeef
size: 100M
offset: 1M
`
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 4)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-aa00deadbeef",
Size: 100 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-cc00deadbeef",
Size: 500 * quantity.SizeMiB,
StartOffset: 200 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[1],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-bb00deadbeef",
Size: 100 * quantity.SizeMiB,
StartOffset: 700 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[2],
},
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-dd00deadbeef",
Size: 400 * quantity.SizeMiB,
StartOffset: 800 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[3],
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumeErrorsContentNoSuchFile(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 400M
offset: 800M
content:
- image: foo.img
`
vol := mustParseVolume(c, gadgetYaml, "first")
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(v, IsNil)
c.Assert(err, ErrorMatches, `cannot lay out structure #0: content "foo.img":.*no such file or directory`)
}
func (p *layoutTestSuite) TestLayoutVolumeContentCanIgnoreContent(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 400M
offset: 800M
content:
- image: foo.img
`
vol := mustParseVolume(c, gadgetYaml, "first")
opts := &gadget.LayoutOptions{
GadgetRootDir: p.dir,
}
// LayoutVolume fails with default options because the foo.img
// file is missing
_, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, ErrorMatches, `cannot lay out structure #0: content "foo.img":.*no such file or directory`)
// But LayoutVolume works with the IgnoreContent works
opts.IgnoreContent = true
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-dd00deadbeef",
Size: 400 * quantity.SizeMiB,
StartOffset: 800 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
},
},
})
}
func makeSizedFile(c *C, path string, size quantity.Size, content []byte) {
err := os.MkdirAll(filepath.Dir(path), 0755)
c.Assert(err, IsNil)
f, err := os.Create(path)
c.Assert(err, IsNil)
defer f.Close()
if size != 0 {
err = f.Truncate(int64(size))
c.Assert(err, IsNil)
}
if content != nil {
_, err := io.Copy(f, bytes.NewReader(content))
c.Assert(err, IsNil)
}
}
func (p *layoutTestSuite) TestLayoutVolumeErrorsContentTooLargeSingle(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 1M
content:
- image: foo.img
`
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), quantity.SizeMiB+1, nil)
vol := mustParseVolume(c, gadgetYaml, "first")
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(v, IsNil)
c.Assert(err, ErrorMatches, `cannot lay out structure #0: content "foo.img" does not fit in the structure`)
}
func (p *layoutTestSuite) TestLayoutVolumeErrorsContentTooLargeMany(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 2M
content:
- image: foo.img
- image: bar.img
`
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), quantity.SizeMiB+1, nil)
makeSizedFile(c, filepath.Join(p.dir, "bar.img"), quantity.SizeMiB+1, nil)
vol := mustParseVolume(c, gadgetYaml, "first")
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(v, IsNil)
c.Assert(err, ErrorMatches, `cannot lay out structure #0: content "bar.img" does not fit in the structure`)
}
func (p *layoutTestSuite) TestLayoutVolumeErrorsContentTooLargeWithOffset(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 1M
content:
- image: foo.img
# 512kB
offset: 524288
`
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), quantity.SizeMiB, nil)
vol := mustParseVolume(c, gadgetYaml, "first")
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(v, IsNil)
c.Assert(err, ErrorMatches, `cannot lay out structure #0: content "foo.img" does not fit in the structure`)
}
func (p *layoutTestSuite) TestLayoutVolumeErrorsContentLargerThanDeclared(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 2M
content:
- image: foo.img
size: 1M
`
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), quantity.SizeMiB+1, nil)
vol := mustParseVolume(c, gadgetYaml, "first")
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(v, IsNil)
c.Assert(err, ErrorMatches, fmt.Sprintf(`cannot lay out structure #0: content "foo.img" size %v is larger than declared %v`, quantity.SizeMiB+1, quantity.SizeMiB))
}
func (p *layoutTestSuite) TestLayoutVolumeErrorsContentOverlap(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 2M
content:
- image: foo.img
size: 1M
# 512kB
offset: 524288
- image: bar.img
size: 1M
offset: 0
`
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), quantity.SizeMiB, nil)
makeSizedFile(c, filepath.Join(p.dir, "bar.img"), quantity.SizeMiB, nil)
vol := mustParseVolume(c, gadgetYaml, "first")
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(v, IsNil)
c.Assert(err, ErrorMatches, `cannot lay out structure #0: content "foo.img" overlaps with preceding image "bar.img"`)
}
func (p *layoutTestSuite) TestLayoutVolumeContentExplicitOrder(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-0000deadbeef
size: 2M
content:
- image: foo.img
size: 1M
offset: 1M
- image: bar.img
size: 1M
offset: 0
`
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), quantity.SizeMiB, nil)
makeSizedFile(c, filepath.Join(p.dir, "bar.img"), quantity.SizeMiB, nil)
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 1)
c.Assert(vol.Structure[0].Content, HasLen, 2)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-0000deadbeef",
Size: 2 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
LaidOutContent: []gadget.LaidOutContent{
{
VolumeContent: &vol.Structure[0].Content[1],
StartOffset: 1 * quantity.OffsetMiB,
Size: quantity.SizeMiB,
Index: 1,
},
{
VolumeContent: &vol.Structure[0].Content[0],
StartOffset: 2 * quantity.OffsetMiB,
Size: quantity.SizeMiB,
Index: 0,
},
},
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumeContentImplicitOrder(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-0000deadbeef
size: 2M
content:
- image: foo.img
size: 1M
- image: bar.img
size: 1M
`
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), quantity.SizeMiB, nil)
makeSizedFile(c, filepath.Join(p.dir, "bar.img"), quantity.SizeMiB, nil)
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 1)
c.Assert(vol.Structure[0].Content, HasLen, 2)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-0000deadbeef",
Size: 2 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
LaidOutContent: []gadget.LaidOutContent{
{
VolumeContent: &vol.Structure[0].Content[0],
StartOffset: 1 * quantity.OffsetMiB,
Size: quantity.SizeMiB,
Index: 0,
},
{
VolumeContent: &vol.Structure[0].Content[1],
StartOffset: 2 * quantity.OffsetMiB,
Size: quantity.SizeMiB,
Index: 1,
},
},
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumeContentImplicitSize(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-0000deadbeef
size: 2M
content:
- image: foo.img
`
size1_5MiB := quantity.SizeMiB + quantity.SizeMiB/2
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), size1_5MiB, nil)
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 1)
c.Assert(vol.Structure[0].Content, HasLen, 1)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-0000deadbeef",
Size: 2 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
LaidOutContent: []gadget.LaidOutContent{
{
VolumeContent: &vol.Structure[0].Content[0],
StartOffset: 1 * quantity.OffsetMiB,
Size: size1_5MiB,
},
},
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumeContentNonBare(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-0000deadbeef
filesystem: ext4
size: 2M
content:
- source: foo.txt
target: /boot
`
makeSizedFile(c, filepath.Join(p.dir, "foo.txt"), 0, []byte("foobar\n"))
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 1)
c.Assert(vol.Structure[0].Content, HasLen, 1)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-0000deadbeef",
PartitionFSType: "ext4",
Size: 2 * quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
ResolvedContent: []gadget.ResolvedContent{
{
VolumeContent: &gadget.VolumeContent{
UnresolvedSource: "foo.txt",
Target: "/boot",
},
ResolvedSource: filepath.Join(p.dir, "foo.txt"),
},
},
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumeMBR(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- name: mbr
type: bare
role: mbr
size: 446
- name: other
type: 00000000-0000-0000-0000-0000deadbeef
size: 1M
`
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 2)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
// MBR
OnDiskStructure: gadget.OnDiskStructure{
Name: "mbr",
Type: "bare",
Size: quantity.Size(446),
StartOffset: 0,
},
VolumeStructure: &vol.Structure[0],
}, {
OnDiskStructure: gadget.OnDiskStructure{
Name: "other",
Type: "00000000-0000-0000-0000-0000deadbeef",
Size: quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[1],
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumeOffsetWriteAll(c *C) {
var gadgetYaml = `
volumes:
pc:
bootloader: grub
structure:
- name: mbr
type: mbr
size: 440
- name: foo
type: DA,21686148-6449-6E6F-744E-656564454649
size: 1M
offset: 1M
offset-write: mbr+92
content:
- image: foo.img
offset-write: bar+10
- name: bar
type: DA,21686148-6449-6E6F-744E-656564454649
size: 1M
offset-write: 600
content:
- image: bar.img
offset-write: 450
`
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), 200*quantity.SizeKiB, []byte(""))
makeSizedFile(c, filepath.Join(p.dir, "bar.img"), 150*quantity.SizeKiB, []byte(""))
vol := mustParseVolume(c, gadgetYaml, "pc")
c.Assert(vol.Structure, HasLen, 3)
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v, DeepEquals, &gadget.LaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
// mbr
OnDiskStructure: gadget.OnDiskStructure{
Name: "mbr",
Type: "mbr",
Size: quantity.Size(440),
StartOffset: 0,
},
VolumeStructure: &vol.Structure[0],
}, {
// foo
OnDiskStructure: gadget.OnDiskStructure{
Name: "foo",
Type: "DA,21686148-6449-6E6F-744E-656564454649",
Size: quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[1],
LaidOutContent: []gadget.LaidOutContent{
{
VolumeContent: &vol.Structure[1].Content[0],
Size: 200 * quantity.SizeKiB,
StartOffset: 1 * quantity.OffsetMiB,
},
},
}, {
// bar
OnDiskStructure: gadget.OnDiskStructure{
Name: "bar",
Type: "DA,21686148-6449-6E6F-744E-656564454649",
Size: quantity.SizeMiB,
StartOffset: 2 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[2],
LaidOutContent: []gadget.LaidOutContent{
{
VolumeContent: &vol.Structure[2].Content[0],
Size: 150 * quantity.SizeKiB,
StartOffset: 2 * quantity.OffsetMiB,
},
},
},
},
})
}
func (p *layoutTestSuite) TestLayoutVolumePartialNoSuchFile(c *C) {
gadgetYaml := `
volumes:
first:
schema: gpt
bootloader: grub
structure:
- type: 00000000-0000-0000-0000-dd00deadbeef
size: 400M
offset: 800M
content:
- image: foo.img
`
vol := mustParseVolume(c, gadgetYaml, "first")
c.Assert(vol.Structure, HasLen, 1)
v, err := gadget.LayoutVolumePartially(vol, gadget.OnDiskStructsFromGadget(vol))
c.Assert(v, DeepEquals, &gadget.PartiallyLaidOutVolume{
Volume: vol,
LaidOutStructure: []gadget.LaidOutStructure{
{
OnDiskStructure: gadget.OnDiskStructure{
Type: "00000000-0000-0000-0000-dd00deadbeef",
Size: 400 * quantity.SizeMiB,
StartOffset: 800 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
},
},
})
c.Assert(err, IsNil)
}
func (p *layoutTestSuite) TestLaidOutStructureShift(c *C) {
var gadgetYamlContent = `
volumes:
pc:
bootloader: grub
structure:
- name: foo
type: DA,21686148-6449-6E6F-744E-656564454649
size: 1M
offset: 1M
content:
- image: foo.img
- image: bar.img
# 300KB
offset: 307200
`
makeSizedFile(c, filepath.Join(p.dir, "foo.img"), 200*quantity.SizeKiB, []byte(""))
makeSizedFile(c, filepath.Join(p.dir, "bar.img"), 150*quantity.SizeKiB, []byte(""))
vol := mustParseVolume(c, gadgetYamlContent, "pc")
opts := &gadget.LayoutOptions{GadgetRootDir: p.dir}
v, err := gadget.LayoutVolume(vol, gadget.OnDiskStructsFromGadget(vol), opts)
c.Assert(err, IsNil)
c.Assert(v.LaidOutStructure, HasLen, 1)
c.Assert(v.LaidOutStructure[0].LaidOutContent, HasLen, 2)
ps := v.LaidOutStructure[0]
c.Assert(ps, DeepEquals, gadget.LaidOutStructure{
// foo
OnDiskStructure: gadget.OnDiskStructure{
Name: "foo",
Type: "DA,21686148-6449-6E6F-744E-656564454649",
Size: quantity.SizeMiB,
StartOffset: 1 * quantity.OffsetMiB,
},
VolumeStructure: &vol.Structure[0],
LaidOutContent: []gadget.LaidOutContent{
{