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Split MajorMinor into two fields

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this reflects what is in the docker/docker/pkg/mount API. makes it
easier to port additional code to out API.
This commit is contained in:
Davanum Srinivas
2020-01-21 10:28:19 -05:00
committed by Srini Brahmaroutu
parent 241ff06ccc
commit 0f9a3f756b
3 changed files with 134 additions and 13 deletions
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113
mount_helper_unix_test.go
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@@ -100,7 +100,8 @@ func TestParseMountInfo(t *testing.T) {
MountInfo{
ID: 189,
ParentID: 80,
MajorMinor: "8:1",
Major: 8,
Minor: 1,
Root: "/var/lib/kubelet",
Source: "/dev/sda1",
MountPoint: "/var/lib/kubelet",
@@ -116,7 +117,8 @@ func TestParseMountInfo(t *testing.T) {
MountInfo{
ID: 222,
ParentID: 24,
MajorMinor: "253:0",
Major: 253,
Minor: 0,
Root: "/tmp/src",
Source: "/dev/mapper/vagrant--vg-root",
MountPoint: "/mnt/dst",
@@ -132,7 +134,8 @@ func TestParseMountInfo(t *testing.T) {
MountInfo{
ID: 224,
ParentID: 62,
MajorMinor: "253:0",
Major: 253,
Minor: 0,
Root: "/var/lib/docker/devicemapper/test/shared",
Source: "/dev/mapper/ssd-root",
MountPoint: "/var/lib/docker/devicemapper/test/shared",
@@ -148,7 +151,8 @@ func TestParseMountInfo(t *testing.T) {
MountInfo{
ID: 28,
ParentID: 18,
MajorMinor: "0:24",
Major: 0,
Minor: 24,
Root: "/",
Source: "tmpfs",
MountPoint: "/sys/fs/cgroup",
@@ -164,7 +168,8 @@ func TestParseMountInfo(t *testing.T) {
MountInfo{
ID: 29,
ParentID: 28,
MajorMinor: "0:25",
Major: 0,
Minor: 25,
Root: "/",
Source: "cgroup",
MountPoint: "/sys/fs/cgroup/systemd",
@@ -180,7 +185,8 @@ func TestParseMountInfo(t *testing.T) {
MountInfo{
ID: 31,
ParentID: 28,
MajorMinor: "0:27",
Major: 0,
Minor: 27,
Root: "/",
Source: "cgroup",
MountPoint: "/sys/fs/cgroup/cpuset",
@@ -213,3 +219,98 @@ func TestParseMountInfo(t *testing.T) {
}
}
}
func TestBadParseMountInfo(t *testing.T) {
tests := []struct {
info string
name string
id int
expectedInfo *MountInfo
error string
}{
{
`224 62 253:0 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered`,
"good major:minor field",
224,
&MountInfo{
ID: 224,
ParentID: 62,
Major: 253,
Minor: 0,
Root: "/var/lib/docker/devicemapper/test/shared",
Source: "/dev/mapper/ssd-root",
MountPoint: "/var/lib/docker/devicemapper/test/shared",
OptionalFields: []string{"master:1", "shared:44"},
FsType: "ext4",
MountOptions: []string{"rw", "relatime"},
SuperOptions: []string{"rw", "seclabel", "data=ordered"},
},
"",
},
{
`224 62 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered`,
"missing major:minor field",
224,
nil,
`parsing '224 62 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered' failed: unexpected minor:major pair [/var/lib/docker/devicemapper/test/shared]`,
},
{
`224 62 :0 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered`,
"empty major field",
224,
nil,
`parsing '' failed: unable to parse major device id, err:strconv.Atoi: parsing "": invalid syntax`,
},
{
`224 62 253: /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered`,
"empty minor field",
224,
nil,
`parsing '' failed: unable to parse minor device id, err:strconv.Atoi: parsing "": invalid syntax`,
},
{
`224 62 foo:0 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered`,
"alphabet in major field",
224,
nil,
`parsing 'foo' failed: unable to parse major device id, err:strconv.Atoi: parsing "foo": invalid syntax`,
},
{
`224 62 253:bar /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered`,
"alphabet in minor field",
224,
nil,
`parsing 'bar' failed: unable to parse minor device id, err:strconv.Atoi: parsing "bar": invalid syntax`,
},
}
for _, test := range tests {
tempDir, filename, err := writeFile(test.info)
if err != nil {
t.Fatalf("cannot create temporary file: %v", err)
}
defer os.RemoveAll(tempDir)
infos, err := ParseMountInfo(filename)
if err != nil {
if err.Error() != test.error {
t.Errorf("Test case %q:\n expected error: %+v\n got: %+v", test.name, test.error, err.Error())
}
continue
}
found := false
for _, info := range infos {
if info.ID == test.id {
found = true
if !reflect.DeepEqual(info, *test.expectedInfo) {
t.Errorf("Test case %q:\n expected: %+v\n got: %+v", test.name, test.expectedInfo, info)
}
break
}
}
if !found {
t.Errorf("Test case %q: mountPoint %d not found", test.name, test.id)
}
}
}