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Fix mountpoint multiple match #42

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Fix mountpoint multiple match #42

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70fdbc4
fix mountpoint multiple match
coco-roll Aug 5, 2021
3e54132
fix mountpoint multiple match
coco-roll Aug 5, 2021
1faa5cc
fix mountpoint multiple match
coco-roll Aug 5, 2021
5d2cc63
fix mountpoint multiple match
coco-roll Aug 5, 2021
6963972
--test add test data
coco-roll Aug 5, 2021
57563fa
delete debug log
coco-roll Aug 5, 2021
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10 changes: 8 additions & 2 deletions internal/cgroups/mountpoint.go
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
_mountInfoSep = " "
_mountInfoOptsSep = ","
_mountInfoOptionalFieldsSep = "-"
_miFieldIDMountPointSep = "/"
)

const (
Expand Down Expand Up @@ -102,7 +103,11 @@

miFieldIDFSType := _miFieldOffsetFSType + fsTypeStart
miFieldIDMountSource := _miFieldOffsetMountSource + fsTypeStart
miFieldIDSuperOptions := _miFieldOffsetSuperOptions + fsTypeStart
rootOpts := strings.Split(fields[_miFieldIDMountPoint], _miFieldIDMountPointSep)
if len(rootOpts) == 0 {
return nil, mountPointFormatInvalidError{line}

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}
superOpts := strings.Split(rootOpts[len(rootOpts)-1], _mountInfoOptsSep)

return &MountPoint{
MountID: mountID,
Expand All @@ -114,7 +119,7 @@
OptionalFields: fields[_miFieldIDOptionalFields:(fsTypeStart - 1)],
FSType: fields[miFieldIDFSType],
MountSource: fields[miFieldIDMountSource],
SuperOptions: strings.Split(fields[miFieldIDSuperOptions], _mountInfoOptsSep),
SuperOptions: superOpts,
}, nil
}
}
Expand All @@ -130,6 +135,7 @@
if err != nil {
return "", err
}

if relPath == ".." || strings.HasPrefix(relPath, "../") {
return "", pathNotExposedFromMountPointError{
mountPoint: mp.MountPoint,
Expand Down
4 changes: 2 additions & 2 deletions internal/cgroups/mountpoint_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@ func TestNewMountPointFromLine(t *testing.T) {
OptionalFields: []string{},
FSType: "ext4",
MountSource: "/dev/dm-0",
SuperOptions: []string{"rw", "errors=remount-ro", "data=ordered"},
SuperOptions: []string{""},
},
},
{
Expand All @@ -63,7 +63,7 @@ func TestNewMountPointFromLine(t *testing.T) {
OptionalFields: []string{"shared:1"},
FSType: "cgroup",
MountSource: "cgroup",
SuperOptions: []string{"rw", "cpu"},
SuperOptions: []string{"cpu"},
},
},
}
Expand Down
1 change: 1 addition & 0 deletions internal/cgroups/testdata/proc/cgroups/mountinfo
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Original file line number Diff line number Diff line change
Expand Up @@ -6,3 +6,4 @@
6 5 0:5 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:6 - cgroup cgroup rw,cpuset
7 5 0:6 /docker /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:7 - cgroup cgroup rw,cpu,cpuacct
8 5 0:7 /docker /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:8 - cgroup cgroup rw,memory
9 5 0:8 /docker/memory.vmstat /sys/fs/cgroup/vmstat rw,nosuid,nodev,noexec,relatime shared:8 - cgroup cgroup rw,memory