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07af1bab70
This updates vendored runc/libcontainer to 1.1.0, and google/cadvisor to a version updated to runc 1.1.0 (google/cadvisor#3048). Changes in vendor are generated by (roughly): ./hack/pin-dependency.sh github.com/google/cadvisor v0.44.0 ./hack/pin-dependency.sh github.com/opencontainers/runc v1.1.0 ./hack/update-vendor.sh ./hack/lint-dependencies.sh # And follow all its recommendations. ./hack/update-vendor.sh ./hack/update-internal-modules.sh ./hack/lint-dependencies.sh # Re-check everything again. Co-Authored-By: Kir Kolyshkin <kolyshkin@gmail.com>
98 lines
2.3 KiB
Go
98 lines
2.3 KiB
Go
package libcontainer
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import (
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"fmt"
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"math"
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"github.com/vishvananda/netlink/nl"
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"golang.org/x/sys/unix"
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)
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// list of known message types we want to send to bootstrap program
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// The number is randomly chosen to not conflict with known netlink types
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const (
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InitMsg uint16 = 62000
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CloneFlagsAttr uint16 = 27281
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NsPathsAttr uint16 = 27282
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UidmapAttr uint16 = 27283
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GidmapAttr uint16 = 27284
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SetgroupAttr uint16 = 27285
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OomScoreAdjAttr uint16 = 27286
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RootlessEUIDAttr uint16 = 27287
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UidmapPathAttr uint16 = 27288
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GidmapPathAttr uint16 = 27289
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MountSourcesAttr uint16 = 27290
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)
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type Int32msg struct {
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Type uint16
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Value uint32
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}
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// Serialize serializes the message.
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// Int32msg has the following representation
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// | nlattr len | nlattr type |
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// | uint32 value |
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func (msg *Int32msg) Serialize() []byte {
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buf := make([]byte, msg.Len())
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native := nl.NativeEndian()
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native.PutUint16(buf[0:2], uint16(msg.Len()))
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native.PutUint16(buf[2:4], msg.Type)
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native.PutUint32(buf[4:8], msg.Value)
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return buf
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}
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func (msg *Int32msg) Len() int {
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return unix.NLA_HDRLEN + 4
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}
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// Bytemsg has the following representation
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// | nlattr len | nlattr type |
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// | value | pad |
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type Bytemsg struct {
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Type uint16
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Value []byte
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}
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func (msg *Bytemsg) Serialize() []byte {
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l := msg.Len()
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if l > math.MaxUint16 {
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// We cannot return nil nor an error here, so we panic with
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// a specific type instead, which is handled via recover in
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// bootstrapData.
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panic(netlinkError{fmt.Errorf("netlink: cannot serialize bytemsg of length %d (larger than UINT16_MAX)", l)})
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}
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buf := make([]byte, (l+unix.NLA_ALIGNTO-1) & ^(unix.NLA_ALIGNTO-1))
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native := nl.NativeEndian()
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native.PutUint16(buf[0:2], uint16(l))
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native.PutUint16(buf[2:4], msg.Type)
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copy(buf[4:], msg.Value)
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return buf
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}
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func (msg *Bytemsg) Len() int {
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return unix.NLA_HDRLEN + len(msg.Value) + 1 // null-terminated
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}
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type Boolmsg struct {
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Type uint16
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Value bool
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}
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func (msg *Boolmsg) Serialize() []byte {
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buf := make([]byte, msg.Len())
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native := nl.NativeEndian()
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native.PutUint16(buf[0:2], uint16(msg.Len()))
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native.PutUint16(buf[2:4], msg.Type)
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if msg.Value {
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native.PutUint32(buf[4:8], uint32(1))
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} else {
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native.PutUint32(buf[4:8], uint32(0))
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}
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return buf
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}
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func (msg *Boolmsg) Len() int {
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return unix.NLA_HDRLEN + 4 // alignment
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}
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