rootless: use RootlessKit port forwarder

RootlessKit port forwarder has a lot of advantages over the slirp4netns port forwarder:

* Very high throughput.
  Benchmark result on Travis: socat: 5.2 Gbps, slirp4netns: 8.3 Gbps, RootlessKit: 27.3 Gbps
  (https://travis-ci.org/rootless-containers/rootlesskit/builds/597056377)

* Connections from the host are treated as 127.0.0.1 rather than 10.0.2.2 in the namespace.
  No UDP issue (#4586)

* No tcp_rmem issue (#4537)

* Probably works with IPv6. Even if not, it is trivial to support IPv6.  (#4311)

* Easily extensible for future support of SCTP

* Easily extensible for future support of `lxc-user-nic` SUID network

RootlessKit port forwarder has been already adopted as the default port forwarder by Rootless Docker/Moby,
and no issue has been reported AFAIK.

As the port forwarder is imported as a Go package, no `rootlesskit` binary is required for Podman.

Fix #4586
May-fix #4559
Fix #4537
May-fix #4311

See https://github.com/rootless-containers/rootlesskit/blob/v0.7.0/pkg/port/builtin/builtin.go

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
This commit is contained in:
Akihiro Suda 2019-11-28 23:33:42 +09:00
parent c41fd09a8d
commit da7595a69f
19 changed files with 1531 additions and 164 deletions

4
go.mod
View file

@ -11,7 +11,6 @@ require (
github.com/containernetworking/cni v0.7.2-0.20190904153231-83439463f784
github.com/containernetworking/plugins v0.8.2
github.com/containers/buildah v1.12.0
github.com/containers/conmon v2.0.2+incompatible // indirect
github.com/containers/image/v5 v5.1.0
github.com/containers/psgo v1.4.0
github.com/containers/storage v1.15.4
@ -37,7 +36,6 @@ require (
github.com/hashicorp/go-multierror v1.0.0
github.com/hpcloud/tail v1.0.0
github.com/json-iterator/go v1.1.8
github.com/mattn/go-isatty v0.0.8 // indirect
github.com/mrunalp/fileutils v0.0.0-20171103030105-7d4729fb3618
github.com/onsi/ginkgo v1.10.3
github.com/onsi/gomega v1.7.1
@ -51,13 +49,13 @@ require (
github.com/pkg/errors v0.8.1
github.com/pkg/profile v1.4.0
github.com/pmezard/go-difflib v1.0.0
github.com/rootless-containers/rootlesskit v0.7.1
github.com/seccomp/containers-golang v0.0.0-20190312124753-8ca8945ccf5f
github.com/sirupsen/logrus v1.4.2
github.com/spf13/cobra v0.0.5
github.com/spf13/pflag v1.0.5
github.com/stretchr/testify v1.4.0
github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2
github.com/uber-go/atomic v1.4.0 // indirect
github.com/uber/jaeger-client-go v2.20.1+incompatible
github.com/uber/jaeger-lib v0.0.0-20190122222657-d036253de8f5 // indirect
github.com/varlink/go v0.0.0-20190502142041-0f1d566d194b

66
go.sum
View file

@ -13,8 +13,6 @@ github.com/Microsoft/go-winio v0.4.11 h1:zoIOcVf0xPN1tnMVbTtEdI+P8OofVk3NObnwOQ6
github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
github.com/Microsoft/go-winio v0.4.12 h1:xAfWHN1IrQ0NJ9TBC0KBZoqLjzDTr1ML+4MywiUOryc=
github.com/Microsoft/go-winio v0.4.12/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
github.com/Microsoft/go-winio v0.4.14 h1:+hMXMk01us9KgxGb7ftKQt2Xpf5hH/yky+TDA+qxleU=
github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5 h1:ygIc8M6trr62pF5DucadTWGdEB4mEyvzi0e2nbcmcyA=
github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5/go.mod h1:tTuCMEN+UleMWgg9dVx4Hu52b1bJo+59jBh3ajtinzw=
github.com/Microsoft/hcsshim v0.8.6 h1:ZfF0+zZeYdzMIVMZHKtDKJvLHj76XCuVae/jNkjj0IA=
@ -58,8 +56,6 @@ github.com/containerd/containerd v1.3.0-beta.2.0.20190828155532-0293cbd26c69/go.
github.com/containerd/containerd v1.3.0 h1:xjvXQWABwS2uiv3TWgQt5Uth60Gu86LTGZXMJkjc7rY=
github.com/containerd/containerd v1.3.0/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
github.com/containerd/continuity v0.0.0-20180216233310-d8fb8589b0e8/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
github.com/containerd/continuity v0.0.0-20181203112020-004b46473808 h1:4BX8f882bXEDKfWIf0wa8HRvpnBoPszJJXL+TVbBw4M=
github.com/containerd/continuity v0.0.0-20181203112020-004b46473808/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc h1:TP+534wVlf61smEIq1nwLLAjQVEK2EADoW3CX9AuT+8=
github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
github.com/containerd/fifo v0.0.0-20190226154929-a9fb20d87448/go.mod h1:ODA38xgv3Kuk8dQz2ZQXpnv/UZZUHUCL7pnLehbXgQI=
@ -73,20 +69,10 @@ github.com/containernetworking/cni v0.7.2-0.20190904153231-83439463f784 h1:rqUVL
github.com/containernetworking/cni v0.7.2-0.20190904153231-83439463f784/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ61X79hmU3w8FmsY=
github.com/containernetworking/plugins v0.8.2 h1:5lnwfsAYO+V7yXhysJKy3E1A2Gy9oVut031zfdOzI9w=
github.com/containernetworking/plugins v0.8.2/go.mod h1:TxALKWZpWL79BC3GOYKJzzXr7U8R23PdhwaLp6F3adc=
github.com/containers/buildah v1.11.4-0.20191028173731-21b4778b359e h1:iDavHEx5Yr7o+0l6495Ya6N0YEPplIUZuWC2e14baDM=
github.com/containers/buildah v1.11.4-0.20191028173731-21b4778b359e/go.mod h1:Igrk75FAxLnzDaHUbtpWB8pwL+Bv+cnakWMvqAXW2v8=
github.com/containers/buildah v1.11.5-0.20191031204705-20e92ffe0982 h1:5WUe09k2sJSbmxwLHZLHc41TrIPrP0GlbhX+WDJBqvs=
github.com/containers/buildah v1.11.5-0.20191031204705-20e92ffe0982/go.mod h1:eGWB4tLoo0hIBuytQpvgUC0hk2mvl2ofaYBeDsU/qoc=
github.com/containers/buildah v1.11.5 h1:bVpkaVlvA7G+1mBDAcX6yf7jNZJ/ZrrAHDt4WCx2i8E=
github.com/containers/buildah v1.11.5/go.mod h1:bfNPqLO8GnI0qMPmI6MHSpQNK+a3TH9syYsRg+iqhRw=
github.com/containers/buildah v1.11.6 h1:PhlF++LAezRtOKHfKhBlo8DLvpMQIvU/K2VfAhknadE=
github.com/containers/buildah v1.11.6/go.mod h1:02+o3ZTICaPyP0QcQFoQd07obLMdAecSnFN2kDhcqNo=
github.com/containers/buildah v1.12.0 h1:bi/8ACl8qobazwfYgNze5y+aRuBIG+R7lMStFbnDOxE=
github.com/containers/buildah v1.12.0/go.mod h1:yzPuQ/mJTPsfSLCyBPbeaoXgBLanjnf36M2cDzyckMg=
github.com/containers/common v0.0.3 h1:C2Zshb0w720FqPa42MCRuiGfbW0kwbURRwvK1EWIC5I=
github.com/containers/common v0.0.3/go.mod h1:CaOgMRiwi2JJHISMZ6VPPZhQYFUDRv3YYVss2RqUCMg=
github.com/containers/conmon v2.0.2+incompatible h1:h2HCdd/EBpwFn7RT82Y2GyXnVUHWxk1Jm4cESSZG4P8=
github.com/containers/conmon v2.0.2+incompatible/go.mod h1:hgwZ2mtuDrppv78a/cOBNiCm6O0UMWGx1mu7P00nu5I=
github.com/containers/image/v5 v5.0.0 h1:arnXgbt1ucsC/ndtSpiQY87rA0UjhF+/xQnPzqdBDn4=
github.com/containers/image/v5 v5.0.0/go.mod h1:MgiLzCfIeo8lrHi+4Lb8HP+rh513sm0Mlk6RrhjFOLY=
github.com/containers/image/v5 v5.1.0 h1:5FjAvPJniamuNNIQHkh4PnsL+n+xzs6Aonzaz5dqTEo=
@ -95,21 +81,11 @@ github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b h1:Q8ePgVfHDpl
github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b/go.mod h1:9rfv8iPl1ZP7aqh9YA68wnZv2NUDbXdcdPHVz0pFbPY=
github.com/containers/ocicrypt v0.0.0-20190930154801-b87a4a69c741 h1:8tQkOcednLJtUcZgK7sPglscXtxvMOnFOa6wd09VWLM=
github.com/containers/ocicrypt v0.0.0-20190930154801-b87a4a69c741/go.mod h1:MeJDzk1RJHv89LjsH0Sp5KTY3ZYkjXO/C+bKAeWFIrc=
github.com/containers/psgo v1.3.2 h1:jYfppPih3S/j2Yi5O14AXjd8GfCx1ph9L3YsoK3adko=
github.com/containers/psgo v1.3.2/go.mod h1:ENXXLQ5E1At4K0EUsGogXBJi/C28gwqkONWeLPI9fJ8=
github.com/containers/psgo v1.4.0 h1:D8B4fZCCZhYgc8hDyMPCiShOinmOB1TP1qe46sSC19k=
github.com/containers/psgo v1.4.0/go.mod h1:ENXXLQ5E1At4K0EUsGogXBJi/C28gwqkONWeLPI9fJ8=
github.com/containers/storage v1.13.2/go.mod h1:6D8nK2sU9V7nEmAraINRs88ZEscM5C5DK+8Npp27GeA=
github.com/containers/storage v1.13.4 h1:j0bBaJDKbUHtAW1MXPFnwXJtqcH+foWeuXK1YaBV5GA=
github.com/containers/storage v1.13.4/go.mod h1:6D8nK2sU9V7nEmAraINRs88ZEscM5C5DK+8Npp27GeA=
github.com/containers/storage v1.13.5 h1:/SUzGeOP2HDijpF7Yur21Ch6WTZC1BNeZF917CWcp5c=
github.com/containers/storage v1.13.5/go.mod h1:HELz8Sn+UVbPaUZMI8RvIG9doD4y4z6Gtg4k7xdd2ZY=
github.com/containers/storage v1.14.0 h1:LbX6WZaDmkXt4DT4xWIg3YXAWd6oA4K9Fi6/KG1xt84=
github.com/containers/storage v1.14.0/go.mod h1:qGPsti/qC1xxX+xcpHfiTMT+8ThVE2Jf83wFHHqkDAY=
github.com/containers/storage v1.15.0 h1:QNW7jJ94ccGcAbFIOSMHUAsUxvHceb71ecLye9EDrkk=
github.com/containers/storage v1.15.0/go.mod h1:qGPsti/qC1xxX+xcpHfiTMT+8ThVE2Jf83wFHHqkDAY=
github.com/containers/storage v1.15.2 h1:hLgafU4tuyQk/smMkXZfHTS8FtAQsqQvfWCp4bsgjuw=
github.com/containers/storage v1.15.2/go.mod h1:v0lq/3f+cXH3Y/HiDaFYRR0zilwDve7I4W7U5xQxvF8=
github.com/containers/storage v1.15.3 h1:+lFSQZnnKUFyUEtguIgdoQLJfWSuYz+j/wg5GxLtsN4=
github.com/containers/storage v1.15.3/go.mod h1:v0lq/3f+cXH3Y/HiDaFYRR0zilwDve7I4W7U5xQxvF8=
github.com/containers/storage v1.15.4 h1:eiUtV9MOTnPHibO18nDRI+aDhKudY7WmAiJdyVMsqSM=
@ -128,8 +104,6 @@ github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f h1:lBNOc5arjvs8E5mO2tbp
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
github.com/cri-o/ocicni v0.1.1-0.20190702175919-7762645d18ca h1:CJstDqYy9ClWuPcDHMTCAiUS+ckekluYetGR2iYYWuo=
github.com/cri-o/ocicni v0.1.1-0.20190702175919-7762645d18ca/go.mod h1:BO0al9TKber3XUTucLzKgoG5sq8qiOB41H7zSdfw6r8=
github.com/cri-o/ocicni v0.1.1-0.20190920040751-deac903fd99b h1:SgS+WV10y2Bubuy2HquSBori6DXj9sqRN77Hgs5H7Qc=
github.com/cri-o/ocicni v0.1.1-0.20190920040751-deac903fd99b/go.mod h1:ZOuIEOp/3MB1eCBWANnNxM3zUA3NWh76wSRCsnKAg2c=
github.com/cyphar/filepath-securejoin v0.2.2 h1:jCwT2GTP+PY5nBz3c/YL5PAIbusElVrPujOBSCj8xRg=
@ -149,8 +123,6 @@ github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BU
github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
github.com/docker/docker v0.0.0-20171019062838-86f080cff091/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
github.com/docker/docker v0.0.0-20180522102801-da99009bbb11/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
github.com/docker/docker v1.4.2-0.20190927142053-ada3c14355ce h1:H3csZuxZESJeeEiOxq4YXPNmLFbjl7u2qVBrAAGX/sA=
github.com/docker/docker v1.4.2-0.20190927142053-ada3c14355ce/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
github.com/docker/docker v1.4.2-0.20191101170500-ac7306503d23 h1:oqgGT9O61YAYvI41EBsLePOr+LE6roB0xY4gpkZuFSE=
github.com/docker/docker v1.4.2-0.20191101170500-ac7306503d23/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
github.com/docker/docker v1.4.2-0.20191219165747-a9416c67da9f h1:Sm8iD2lifO31DwXfkGzq8VgA7rwxPjRsYmeo0K/dF9Y=
@ -188,8 +160,6 @@ github.com/fatih/camelcase v1.0.0 h1:hxNvNX/xYBp0ovncs8WyWZrOrpBNub/JfaMvbURyft8
github.com/fatih/camelcase v1.0.0/go.mod h1:yN2Sb0lFhZJUdVvtELVWefmrXpuZESvPmqwoZc+/fpc=
github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/fsouza/go-dockerclient v1.5.0 h1:7OtayOe5HnoG+KWMHgyyPymwaodnB2IDYuVfseKyxbA=
github.com/fsouza/go-dockerclient v1.5.0/go.mod h1:AqZZK/zFO3phxYxlTsAaeAMSdQ9mgHuhy+bjN034Qds=
github.com/fsouza/go-dockerclient v1.6.0 h1:f7j+AX94143JL1H3TiqSMkM4EcLDI0De1qD4GGn3Hig=
github.com/fsouza/go-dockerclient v1.6.0/go.mod h1:YWwtNPuL4XTX1SKJQk86cWPmmqwx+4np9qfPbb+znGc=
github.com/fullsailor/pkcs7 v0.0.0-20190404230743-d7302db945fa h1:RDBNVkRviHZtvDvId8XSGPu3rmpmSe+wKRcEWNgsfWU=
@ -207,10 +177,9 @@ github.com/go-openapi/spec v0.0.0-20160808142527-6aced65f8501/go.mod h1:J8+jY1nA
github.com/go-openapi/swag v0.0.0-20160704191624-1d0bd113de87/go.mod h1:DXUve3Dpr1UfpPtxFw+EFuQ41HhCWZfha5jSVRG7C7I=
github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
github.com/godbus/dbus v0.0.0-20180201030542-885f9cc04c9c/go.mod h1:/YcGZj5zSblfDWMMoOzV4fas9FZnQYTkDnsGvmh2Grw=
github.com/godbus/dbus v0.0.0-20181101234600-2ff6f7ffd60f h1:zlOR3rOlPAVvtfuxGKoghCmop5B0TRyu/ZieziZuGiM=
github.com/godbus/dbus v0.0.0-20181101234600-2ff6f7ffd60f/go.mod h1:/YcGZj5zSblfDWMMoOzV4fas9FZnQYTkDnsGvmh2Grw=
github.com/godbus/dbus v0.0.0-20190422162347-ade71ed3457e h1:BWhy2j3IXJhjCbC68FptL43tDKIq8FladmaTs3Xs7Z8=
github.com/godbus/dbus v0.0.0-20190422162347-ade71ed3457e/go.mod h1:bBOAhwG1umN6/6ZUMtDFBMQR8jRg9O75tm9K00oMsK4=
github.com/gofrs/flock v0.7.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
github.com/gogo/protobuf v0.0.0-20170815085658-fcdc5011193f/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/gogo/protobuf v0.0.0-20171007142547-342cbe0a0415/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
@ -225,7 +194,6 @@ github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb
github.com/golang/protobuf v0.0.0-20161109072736-4bd1920723d7/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.0/go.mod h1:Qd/q+1AKNOZr9uGQzbzCmRO6sUih6GTPZv6a1/R87v0=
github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
@ -270,15 +238,15 @@ github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpO
github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/imdario/mergo v0.3.6 h1:xTNEAn+kxVO7dTZGu0CegyqKZmoWFI0rF8UxjlB2d28=
github.com/imdario/mergo v0.3.6/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/imdario/mergo v0.3.7 h1:Y+UAYTZ7gDEuOfhxKWy+dvb5dRQ6rJjFSdX2HZY1/gI=
github.com/imdario/mergo v0.3.7/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/imdario/mergo v0.3.8 h1:CGgOkSJeqMRmt0D9XLWExdT4m4F1vd3FV3VPt+0VxkQ=
github.com/imdario/mergo v0.3.8/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
github.com/insomniacslk/dhcp v0.0.0-20190712084813-dc1a53400564/go.mod h1:CfMdguCK66I5DAUJgGKyNz8aB6vO5dZzkm9Xep6WGvw=
github.com/ishidawataru/sctp v0.0.0-20180918013207-6e2cb1366111 h1:NAAiV9ass6VReWFjuxqrMIq12WKlSULI6Gs3PxQghLA=
github.com/ishidawataru/sctp v0.0.0-20180918013207-6e2cb1366111/go.mod h1:DM4VvS+hD/kDi1U1QsX2fnZowwBhqD0Dk3bRPKF/Oc8=
github.com/j-keck/arping v0.0.0-20160618110441-2cf9dc699c56/go.mod h1:ymszkNOg6tORTn+6F6j+Jc8TOr5osrynvN6ivFWZ2GA=
github.com/jamescun/tuntap v0.0.0-20190712092105-cb1fb277045c/go.mod h1:zzwpsgcYhzzIP5WyF8g9ivCv38cY9uAV9Gu0m3lThhE=
github.com/json-iterator/go v0.0.0-20180612202835-f2b4162afba3/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
github.com/json-iterator/go v0.0.0-20180701071628-ab8a2e0c74be/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
github.com/json-iterator/go v1.1.6 h1:MrUvLMLTMxbqFJ9kzlvat/rYZqZnW3u4wkLzWTaFwKs=
@ -298,8 +266,6 @@ github.com/klauspost/compress v1.7.2 h1:liMOoeIvFpr9kEvalrZ7VVBA4wGf7zfOgwBjzz/5
github.com/klauspost/compress v1.7.2/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
github.com/klauspost/compress v1.8.1 h1:oygt2ychZFHOB6M9gUgajzgKrwRgHbGC77NwA4COVgI=
github.com/klauspost/compress v1.8.1/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
github.com/klauspost/compress v1.9.2 h1:LfVyl+ZlLlLDeQ/d2AqfGIIH4qEDu0Ed2S5GyhCWIWY=
github.com/klauspost/compress v1.9.2/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
github.com/klauspost/compress v1.9.4 h1:xhvAeUPQ2drNUhKtrGdTGNvV9nNafHMUkRyLkzxJoB4=
github.com/klauspost/compress v1.9.4/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
github.com/klauspost/cpuid v1.2.1 h1:vJi+O/nMdFt0vqm8NZBI6wzALWdA2X+egi0ogNyrC/w=
@ -319,8 +285,6 @@ github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czP
github.com/mailru/easyjson v0.0.0-20160728113105-d5b7844b561a/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs=
github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
github.com/mattn/go-isatty v0.0.8 h1:HLtExJ+uU2HOZ+wI0Tt5DtUDrx8yhUqDcp7fYERX4CE=
github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
github.com/mattn/go-shellwords v1.0.3/go.mod h1:3xCvwCdWdlDJUrvuMn7Wuy9eWs4pE8vqg+NOMyg4B2o=
github.com/mattn/go-shellwords v1.0.5 h1:JhhFTIOslh5ZsPrpa3Wdg8bF0WI3b44EMblmU9wIsXc=
github.com/mattn/go-shellwords v1.0.5/go.mod h1:3xCvwCdWdlDJUrvuMn7Wuy9eWs4pE8vqg+NOMyg4B2o=
@ -332,6 +296,7 @@ github.com/mistifyio/go-zfs v2.1.1+incompatible h1:gAMO1HM9xBRONLHHYnu5iFsOJUiJd
github.com/mistifyio/go-zfs v2.1.1+incompatible/go.mod h1:8AuVvqP/mXw1px98n46wfvcGfQ4ci2FwoAjKYxuo3Z4=
github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
github.com/moby/vpnkit v0.3.1-0.20190720080441-7dd3dcce7d3d/go.mod h1:KyjUrL9cb6ZSNNAUwZfqRjhwwgJ3BJN+kXh0t43WTUQ=
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@ -354,8 +319,6 @@ github.com/onsi/ginkgo v0.0.0-20170829012221-11459a886d9c/go.mod h1:lLunBs/Ym6LB
github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/ginkgo v1.8.0 h1:VkHVNpR4iVnU8XQR6DBm8BqYjN7CRzw+xKUbVVbbW9w=
github.com/onsi/ginkgo v1.8.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/ginkgo v1.10.1 h1:q/mM8GF/n0shIN8SaAZ0V+jnLPzen6WIVZdiwrRlMlo=
github.com/onsi/ginkgo v1.10.1/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/ginkgo v1.10.2/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/ginkgo v1.10.3 h1:OoxbjfXVZyod1fmWYhI7SEyaD8B00ynP3T+D5GiyHOY=
github.com/onsi/ginkgo v1.10.3/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
@ -364,7 +327,6 @@ github.com/onsi/gomega v0.0.0-20170829124025-dcabb60a477c/go.mod h1:C1qb7wdrVGGV
github.com/onsi/gomega v0.0.0-20190113212917-5533ce8a0da3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
github.com/onsi/gomega v1.5.0 h1:izbySO9zDPmjJ8rDjLvkA2zJHIo+HkYXHnf7eN7SSyo=
github.com/onsi/gomega v1.5.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
github.com/onsi/gomega v1.7.0 h1:XPnZz8VVBHjVsy1vzJmRwIcSwiUO+JFfrv/xGiigmME=
github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
github.com/onsi/gomega v1.7.1 h1:K0jcRCwNQM3vFGh1ppMtDh/+7ApJrjldlX8fA0jDTLQ=
github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
@ -380,7 +342,6 @@ github.com/opencontainers/runc v0.0.0-20190425234816-dae70e8efea4/go.mod h1:qT5X
github.com/opencontainers/runc v0.1.1/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
github.com/opencontainers/runc v1.0.0-rc8 h1:dDCFes8Hj1r/i5qnypONo5jdOme/8HWZC/aNDyhECt0=
github.com/opencontainers/runc v1.0.0-rc8/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
github.com/opencontainers/runc v1.0.0-rc8.0.20190827142921-dd075602f158 h1:/A6bAdnSZoTQmKml3MdHAnSEPnBAQeigNBl4sxnfaaQ=
github.com/opencontainers/runc v1.0.0-rc8.0.20190827142921-dd075602f158/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
github.com/opencontainers/runc v1.0.0-rc9 h1:/k06BMULKF5hidyoZymkoDCzdJzltZpz/UU4LguQVtc=
github.com/opencontainers/runc v1.0.0-rc9/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
@ -408,8 +369,6 @@ github.com/pkg/errors v0.0.0-20190227000051-27936f6d90f9/go.mod h1:bwawxfHBFNV+L
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/profile v1.3.0 h1:OQIvuDgm00gWVWGTf4m4mCt6W1/0YqU7Ntg0mySWgaI=
github.com/pkg/profile v1.3.0/go.mod h1:hJw3o1OdXxsrSjjVksARp5W95eeEaEfptyVZyv6JUPA=
github.com/pkg/profile v1.4.0 h1:uCmaf4vVbWAOZz36k1hrQD7ijGRzLwaME8Am/7a4jZI=
github.com/pkg/profile v1.4.0/go.mod h1:NWz/XGvpEW1FyYQ7fCx4dqYBLlfTcE+A9FLAkNKqjFE=
github.com/pmezard/go-difflib v0.0.0-20151028094244-d8ed2627bdf0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
@ -438,6 +397,8 @@ github.com/prometheus/procfs v0.0.3/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDa
github.com/prometheus/procfs v0.0.5 h1:3+auTFlqw+ZaQYJARz6ArODtkaIwtvBTx3N2NehQlL8=
github.com/prometheus/procfs v0.0.5/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDaekg4FpcdQ=
github.com/rogpeppe/go-charset v0.0.0-20180617210344-2471d30d28b4/go.mod h1:qgYeAmZ5ZIpBWTGllZSQnw97Dj+woV0toclVaRGI8pc=
github.com/rootless-containers/rootlesskit v0.7.1 h1:enhwHIAXDjfpV83bL4xF60WZ+1ATjMB7spDDvpWAfPk=
github.com/rootless-containers/rootlesskit v0.7.1/go.mod h1:r9YL5mKRIdnwcYk4G8E5CSc9MDeFtgYmhfE4CSvDGYA=
github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
github.com/safchain/ethtool v0.0.0-20190326074333-42ed695e3de8 h1:2c1EFnZHIPCW8qKWgHMH/fX2PkSabFc5mrVzfUNdg5U=
@ -481,12 +442,8 @@ github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2 h1:b6uOv7YOFK0
github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
github.com/tchap/go-patricia v2.3.0+incompatible h1:GkY4dP3cEfEASBPPkWd+AmjYxhmDkqO9/zg7R0lSQRs=
github.com/tchap/go-patricia v2.3.0+incompatible/go.mod h1:bmLyhP68RS6kStMGxByiQ23RP/odRBOTVjwp2cDyi6I=
github.com/uber-go/atomic v1.4.0 h1:yOuPqEq4ovnhEjpHmfFwsqBXDYbQeT6Nb0bwD6XnD5o=
github.com/uber-go/atomic v1.4.0/go.mod h1:/Ct5t2lcmbJ4OSe/waGBoaVvVqtO0bmtfVNex1PFV8g=
github.com/uber/jaeger-client-go v2.19.0+incompatible h1:pbwbYfHUoaase0oPQOdZ1GcaUjImYGimUXSQ/+8+Z8Q=
github.com/uber/jaeger-client-go v2.19.0+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
github.com/uber/jaeger-client-go v2.20.0+incompatible h1:ttG9wKdl2ikV/BGOtu+eb+VPp+R7jMeuM177Ihs5Fdc=
github.com/uber/jaeger-client-go v2.20.0+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
github.com/theckman/go-flock v0.7.1/go.mod h1:kjuth3y9VJ2aNlkNEO99G/8lp9fMIKaGyBmh84IBheM=
github.com/u-root/u-root v5.0.0+incompatible/go.mod h1:RYkpo8pTHrNjW08opNd/U6p/RJE7K0D8fXO0d47+3YY=
github.com/uber/jaeger-client-go v2.20.1+incompatible h1:HgqpYBng0n7tLJIlyT4kPCIv5XgCsF+kai1NnnrJzEU=
github.com/uber/jaeger-client-go v2.20.1+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
github.com/uber/jaeger-lib v0.0.0-20190122222657-d036253de8f5 h1:CwmGyzHTzCqCdZJkWR0A7ucZXgrCY7spRcpvm7ci//s=
@ -495,6 +452,7 @@ github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljT
github.com/ulikunitz/xz v0.5.6 h1:jGHAfXawEGZQ3blwU5wnWKQJvAraT7Ftq9EXjnXYgt8=
github.com/ulikunitz/xz v0.5.6/go.mod h1:2bypXElzHzzJZwzH67Y6wb67pO62Rzfn7BSiF4ABRW8=
github.com/urfave/cli v0.0.0-20171014202726-7bc6a0acffa5/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
github.com/varlink/go v0.0.0-20190502142041-0f1d566d194b h1:hdDRrn9OP/roL8a/e/5Zu85ldrcdndu9IeBj2OEvQm0=
github.com/varlink/go v0.0.0-20190502142041-0f1d566d194b/go.mod h1:YHaw8N660ESgMgLOZfLQqT1htFItynAUxMesFBho52s=
@ -577,19 +535,18 @@ golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5h
golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190425145619-16072639606e h1:4ktJgTV34+N3qOZUc5fAaG3Pb11qzMm3PkAoTAgUZ2I=
golang.org/x/sys v0.0.0-20190425145619-16072639606e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190514135907-3a4b5fb9f71f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190616124812-15dcb6c0061f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb h1:fgwFCsaw9buMuxNd6+DQfAuSFqbNiQZpcgJQAgJsK6k=
golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190712062909-fae7ac547cb7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190801041406-cbf593c0f2f3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190902133755-9109b7679e13 h1:tdsQdquKbTNMsSZLqnLELJGzCANp9oXhu6zFBW6ODx4=
golang.org/x/sys v0.0.0-20190902133755-9109b7679e13/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@ -623,7 +580,6 @@ google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7
google.golang.org/appengine v1.6.1 h1:QzqyMA1tlu6CgqCDUtU9V+ZKhLFT2dkJuANu5QaxI3I=
google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/genproto v0.0.0-20190620144150-6af8c5fc6601 h1:9VBRTdmgQxbs6HE0sUnMrSWNePppAJU07NYvX5dIB04=
google.golang.org/genproto v0.0.0-20190620144150-6af8c5fc6601/go.mod h1:z3L6/3dTEVtUr6QSP8miRzeRqwQOioJ9I66odjN4I7s=
@ -655,8 +611,6 @@ gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.5 h1:ymVxjfMaHvXD8RqPRmzHHsB3VvucivSkIAvJFDI5O3c=
gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.7 h1:VUgggvou5XRW9mHwD/yXxIYSMtY0zoKQf/v226p2nyo=
gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gotest.tools v0.0.0-20190624233834-05ebafbffc79/go.mod h1:R//lfYlUuTOTfblYI3lGoAAAebUdzjvbmQsuB7Ykd90=

View file

@ -135,6 +135,9 @@ type Container struct {
rootlessSlirpSyncR *os.File
rootlessSlirpSyncW *os.File
rootlessPortSyncR *os.File
rootlessPortSyncW *os.File
// A restored container should have the same IP address as before
// being checkpointed. If requestedIP is set it will be used instead
// of config.StaticIP.

View file

@ -3,8 +3,10 @@
package libpod
import (
"bytes"
"crypto/rand"
"fmt"
"io"
"io/ioutil"
"net"
"os"
@ -20,6 +22,7 @@ import (
"github.com/containers/libpod/pkg/errorhandling"
"github.com/containers/libpod/pkg/netns"
"github.com/containers/libpod/pkg/rootless"
"github.com/containers/libpod/pkg/rootlessport"
"github.com/cri-o/ocicni/pkg/ocicni"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
@ -151,19 +154,6 @@ func (r *Runtime) createNetNS(ctr *Container) (n ns.NetNS, q []*cnitypes.Result,
return ctrNS, networkStatus, err
}
type slirp4netnsCmdArg struct {
Proto string `json:"proto,omitempty"`
HostAddr string `json:"host_addr"`
HostPort int32 `json:"host_port"`
GuestAddr string `json:"guest_addr"`
GuestPort int32 `json:"guest_port"`
}
type slirp4netnsCmd struct {
Execute string `json:"execute"`
Args slirp4netnsCmdArg `json:"arguments"`
}
func checkSlirpFlags(path string) (bool, bool, bool, error) {
cmd := exec.Command(path, "--help")
out, err := cmd.CombinedOutput()
@ -194,13 +184,9 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) (err error) {
defer errorhandling.CloseQuiet(syncW)
havePortMapping := len(ctr.Config().PortMappings) > 0
apiSocket := filepath.Join(ctr.runtime.config.TmpDir, fmt.Sprintf("%s.net", ctr.config.ID))
logPath := filepath.Join(ctr.runtime.config.TmpDir, fmt.Sprintf("slirp4netns-%s.log", ctr.config.ID))
cmdArgs := []string{}
if havePortMapping {
cmdArgs = append(cmdArgs, "--api-socket", apiSocket)
}
dhp, mtu, sandbox, err := checkSlirpFlags(path)
if err != nil {
return errors.Wrapf(err, "error checking slirp4netns binary %s: %q", path, err)
@ -221,15 +207,19 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) (err error) {
// -e, --exit-fd=FD specify the FD for terminating slirp4netns
// -r, --ready-fd=FD specify the FD to write to when the initialization steps are finished
cmdArgs = append(cmdArgs, "-c", "-e", "3", "-r", "4")
netnsPath := ""
if !ctr.config.PostConfigureNetNS {
ctr.rootlessSlirpSyncR, ctr.rootlessSlirpSyncW, err = os.Pipe()
if err != nil {
return errors.Wrapf(err, "failed to create rootless network sync pipe")
}
cmdArgs = append(cmdArgs, "--netns-type=path", ctr.state.NetNS.Path(), "tap0")
netnsPath = ctr.state.NetNS.Path()
cmdArgs = append(cmdArgs, "--netns-type=path", netnsPath, "tap0")
} else {
defer errorhandling.CloseQuiet(ctr.rootlessSlirpSyncR)
defer errorhandling.CloseQuiet(ctr.rootlessSlirpSyncW)
netnsPath = fmt.Sprintf("/proc/%d/ns/net", ctr.state.PID)
// we don't use --netns-path here (unavailable for slirp4netns < v0.4)
cmdArgs = append(cmdArgs, fmt.Sprintf("%d", ctr.state.PID), "tap0")
}
@ -269,11 +259,27 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) (err error) {
}
}()
if err := waitForSync(syncR, cmd, logFile, 1*time.Second); err != nil {
return err
}
if havePortMapping {
return r.setupRootlessPortMapping(ctr, netnsPath)
}
return nil
}
func waitForSync(syncR *os.File, cmd *exec.Cmd, logFile io.ReadSeeker, timeout time.Duration) error {
prog := filepath.Base(cmd.Path)
if len(cmd.Args) > 0 {
prog = cmd.Args[0]
}
b := make([]byte, 16)
for {
if err := syncR.SetDeadline(time.Now().Add(1 * time.Second)); err != nil {
return errors.Wrapf(err, "error setting slirp4netns pipe timeout")
if err := syncR.SetDeadline(time.Now().Add(timeout)); err != nil {
return errors.Wrapf(err, "error setting %s pipe timeout", prog)
}
// FIXME: return err as soon as proc exits, without waiting for timeout
if _, err := syncR.Read(b); err == nil {
break
} else {
@ -282,7 +288,7 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) (err error) {
var status syscall.WaitStatus
pid, err := syscall.Wait4(cmd.Process.Pid, &status, syscall.WNOHANG, nil)
if err != nil {
return errors.Wrapf(err, "failed to read slirp4netns process status")
return errors.Wrapf(err, "failed to read %s process status", prog)
}
if pid != cmd.Process.Pid {
continue
@ -294,100 +300,86 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) (err error) {
}
logContent, err := ioutil.ReadAll(logFile)
if err != nil {
return errors.Wrapf(err, "slirp4netns failed")
return errors.Wrapf(err, "%s failed", prog)
}
return errors.Errorf("slirp4netns failed: %q", logContent)
return errors.Errorf("%s failed: %q", prog, logContent)
}
if status.Signaled() {
return errors.New("slirp4netns killed by signal")
return errors.Errorf("%s killed by signal", prog)
}
continue
}
return errors.Wrapf(err, "failed to read from slirp4netns sync pipe")
return errors.Wrapf(err, "failed to read from %s sync pipe", prog)
}
}
return nil
}
if havePortMapping {
const pidWaitTimeout = 60 * time.Second
chWait := make(chan error)
go func() {
interval := 25 * time.Millisecond
for i := time.Duration(0); i < pidWaitTimeout; i += interval {
// Check if the process is still running.
var status syscall.WaitStatus
pid, err := syscall.Wait4(cmd.Process.Pid, &status, syscall.WNOHANG, nil)
if err != nil {
break
}
if pid != cmd.Process.Pid {
continue
}
if status.Exited() || status.Signaled() {
chWait <- fmt.Errorf("slirp4netns exited with status %d", status.ExitStatus())
}
time.Sleep(interval)
}
}()
defer close(chWait)
// wait that API socket file appears before trying to use it.
if _, err := WaitForFile(apiSocket, chWait, pidWaitTimeout); err != nil {
return errors.Wrapf(err, "waiting for slirp4nets to create the api socket file %s", apiSocket)
}
// for each port we want to add we need to open a connection to the slirp4netns control socket
// and send the add_hostfwd command.
for _, i := range ctr.config.PortMappings {
conn, err := net.Dial("unix", apiSocket)
if err != nil {
return errors.Wrapf(err, "cannot open connection to %s", apiSocket)
}
defer func() {
if err := conn.Close(); err != nil {
logrus.Errorf("unable to close connection: %q", err)
}
}()
hostIP := i.HostIP
if hostIP == "" {
hostIP = "0.0.0.0"
}
cmd := slirp4netnsCmd{
Execute: "add_hostfwd",
Args: slirp4netnsCmdArg{
Proto: i.Protocol,
HostAddr: hostIP,
HostPort: i.HostPort,
GuestPort: i.ContainerPort,
},
}
// create the JSON payload and send it. Mark the end of request shutting down writes
// to the socket, as requested by slirp4netns.
data, err := json.Marshal(&cmd)
if err != nil {
return errors.Wrapf(err, "cannot marshal JSON for slirp4netns")
}
if _, err := conn.Write([]byte(fmt.Sprintf("%s\n", data))); err != nil {
return errors.Wrapf(err, "cannot write to control socket %s", apiSocket)
}
if err := conn.(*net.UnixConn).CloseWrite(); err != nil {
return errors.Wrapf(err, "cannot shutdown the socket %s", apiSocket)
}
buf := make([]byte, 2048)
readLength, err := conn.Read(buf)
if err != nil {
return errors.Wrapf(err, "cannot read from control socket %s", apiSocket)
}
// if there is no 'error' key in the received JSON data, then the operation was
// successful.
var y map[string]interface{}
if err := json.Unmarshal(buf[0:readLength], &y); err != nil {
return errors.Wrapf(err, "error parsing error status from slirp4netns")
}
if e, found := y["error"]; found {
return errors.Errorf("error from slirp4netns while setting up port redirection: %v", e)
}
}
func (r *Runtime) setupRootlessPortMapping(ctr *Container, netnsPath string) (err error) {
syncR, syncW, err := os.Pipe()
if err != nil {
return errors.Wrapf(err, "failed to open pipe")
}
defer errorhandling.CloseQuiet(syncR)
defer errorhandling.CloseQuiet(syncW)
logPath := filepath.Join(ctr.runtime.config.TmpDir, fmt.Sprintf("rootlessport-%s.log", ctr.config.ID))
logFile, err := os.Create(logPath)
if err != nil {
return errors.Wrapf(err, "failed to open rootlessport log file %s", logPath)
}
defer logFile.Close()
// Unlink immediately the file so we won't need to worry about cleaning it up later.
// It is still accessible through the open fd logFile.
if err := os.Remove(logPath); err != nil {
return errors.Wrapf(err, "delete file %s", logPath)
}
ctr.rootlessPortSyncR, ctr.rootlessPortSyncW, err = os.Pipe()
if err != nil {
return errors.Wrapf(err, "failed to create rootless port sync pipe")
}
cfg := rootlessport.Config{
Mappings: ctr.config.PortMappings,
NetNSPath: netnsPath,
ExitFD: 3,
ReadyFD: 4,
}
cfgJSON, err := json.Marshal(cfg)
if err != nil {
return err
}
cfgR := bytes.NewReader(cfgJSON)
var stdout bytes.Buffer
cmd := exec.Command(fmt.Sprintf("/proc/%d/exe", os.Getpid()))
cmd.Args = []string{rootlessport.ReexecKey}
// Leak one end of the pipe in rootlessport process, the other will be sent to conmon
cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.rootlessPortSyncR, syncW)
cmd.Stdin = cfgR
// stdout is for human-readable error, stderr is for debug log
cmd.Stdout = &stdout
cmd.Stderr = io.MultiWriter(logFile, &logrusDebugWriter{"rootlessport: "})
cmd.SysProcAttr = &syscall.SysProcAttr{
Setpgid: true,
}
if err := cmd.Start(); err != nil {
return errors.Wrapf(err, "failed to start rootlessport process")
}
defer func() {
if err := cmd.Process.Release(); err != nil {
logrus.Errorf("unable to release rootlessport process: %q", err)
}
}()
if err := waitForSync(syncR, cmd, logFile, 3*time.Second); err != nil {
stdoutStr := stdout.String()
if stdoutStr != "" {
// err contains full debug log and too verbose, so return stdoutStr
logrus.Debug(err)
return errors.Errorf("failed to expose ports via rootlessport: %q", stdoutStr)
}
return err
}
logrus.Debug("rootlessport is ready")
return nil
}
@ -587,3 +579,12 @@ func (c *Container) getContainerNetworkInfo(data *InspectContainerData) *Inspect
}
return data
}
type logrusDebugWriter struct {
prefix string
}
func (w *logrusDebugWriter) Write(p []byte) (int, error) {
logrus.Debugf("%s%s", w.prefix, string(p))
return len(p), nil
}

View file

@ -1000,6 +1000,15 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
}
// Leak one end in conmon, the other one will be leaked into slirp4netns
cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.rootlessSlirpSyncW)
if ctr.rootlessPortSyncR != nil {
defer errorhandling.CloseQuiet(ctr.rootlessPortSyncR)
}
if ctr.rootlessPortSyncW != nil {
defer errorhandling.CloseQuiet(ctr.rootlessPortSyncW)
// Leak one end in conmon, the other one will be leaked into rootlessport
cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.rootlessPortSyncW)
}
}
err = startCommandGivenSelinux(cmd)

View file

@ -0,0 +1,262 @@
// +build linux
// Package rootlessport provides reexec for RootlessKit-based port forwarder.
//
// init() contains reexec.Register() for ReexecKey .
//
// The reexec requires Config to be provided via stdin.
//
// The reexec writes human-readable error message on stdout on error.
//
// Debug log is printed on stderr.
package rootlessport
import (
"context"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"syscall"
"github.com/containernetworking/plugins/pkg/ns"
"github.com/containers/storage/pkg/reexec"
"github.com/cri-o/ocicni/pkg/ocicni"
"github.com/pkg/errors"
rkport "github.com/rootless-containers/rootlesskit/pkg/port"
rkbuiltin "github.com/rootless-containers/rootlesskit/pkg/port/builtin"
rkportutil "github.com/rootless-containers/rootlesskit/pkg/port/portutil"
"github.com/sirupsen/logrus"
)
const (
// ReexecKey is the reexec key for the parent process.
ReexecKey = "containers-rootlessport"
// reexecChildKey is used internally for the second reexec
reexecChildKey = "containers-rootlessport-child"
reexecChildEnvOpaque = "_CONTAINERS_ROOTLESSPORT_CHILD_OPAQUE"
)
// Config needs to be provided to the process via stdin as a JSON string.
// stdin needs to be closed after the message has been written.
type Config struct {
Mappings []ocicni.PortMapping
NetNSPath string
ExitFD int
ReadyFD int
}
func init() {
reexec.Register(ReexecKey, func() {
if err := parent(); err != nil {
fmt.Println(err)
os.Exit(1)
}
})
reexec.Register(reexecChildKey, func() {
if err := child(); err != nil {
fmt.Println(err)
os.Exit(1)
}
})
}
func loadConfig(r io.Reader) (*Config, io.ReadCloser, io.WriteCloser, error) {
stdin, err := ioutil.ReadAll(r)
if err != nil {
return nil, nil, nil, err
}
var cfg Config
if err := json.Unmarshal(stdin, &cfg); err != nil {
return nil, nil, nil, err
}
if cfg.NetNSPath == "" {
return nil, nil, nil, errors.New("missing NetNSPath")
}
if cfg.ExitFD <= 0 {
return nil, nil, nil, errors.New("missing ExitFD")
}
exitFile := os.NewFile(uintptr(cfg.ExitFD), "exitfile")
if exitFile == nil {
return nil, nil, nil, errors.New("invalid ExitFD")
}
if cfg.ReadyFD <= 0 {
return nil, nil, nil, errors.New("missing ReadyFD")
}
readyFile := os.NewFile(uintptr(cfg.ReadyFD), "readyfile")
if readyFile == nil {
return nil, nil, nil, errors.New("invalid ReadyFD")
}
return &cfg, exitFile, readyFile, nil
}
func parent() error {
// load config from stdin
cfg, exitR, readyW, err := loadConfig(os.Stdin)
if err != nil {
return err
}
// create the parent driver
stateDir, err := ioutil.TempDir("", "rootlessport")
if err != nil {
return err
}
driver, err := rkbuiltin.NewParentDriver(&logrusWriter{prefix: "parent: "}, stateDir)
if err != nil {
return err
}
initComplete := make(chan struct{})
quit := make(chan struct{})
errCh := make(chan error)
// start the parent driver. initComplete will be closed when the child connected to the parent.
logrus.Infof("starting parent driver")
go func() {
driverErr := driver.RunParentDriver(initComplete, quit, nil)
if driverErr != nil {
logrus.WithError(driverErr).Warn("parent driver exited")
}
errCh <- driverErr
}()
opaque := driver.OpaqueForChild()
logrus.Infof("opaque=%+v", opaque)
opaqueJSON, err := json.Marshal(opaque)
if err != nil {
return err
}
childQuitR, childQuitW, err := os.Pipe()
if err != nil {
return err
}
defer func() {
// stop the child
logrus.Info("stopping child driver")
if err := childQuitW.Close(); err != nil {
logrus.WithError(err).Warn("unable to close childQuitW")
}
}()
// reexec the child process in the child netns
cmd := exec.Command(fmt.Sprintf("/proc/%d/exe", os.Getpid()))
cmd.Args = []string{reexecChildKey}
cmd.Stdin = childQuitR
cmd.Stdout = &logrusWriter{prefix: "child"}
cmd.Stderr = cmd.Stdout
cmd.Env = append(os.Environ(), reexecChildEnvOpaque+"="+string(opaqueJSON))
cmd.SysProcAttr = &syscall.SysProcAttr{
Pdeathsig: syscall.SIGTERM,
}
childNS, err := ns.GetNS(cfg.NetNSPath)
if err != nil {
return err
}
if err := childNS.Do(func(_ ns.NetNS) error {
logrus.Infof("starting child driver in child netns (%q %v)", cmd.Path, cmd.Args)
return cmd.Start()
}); err != nil {
return err
}
logrus.Info("waiting for initComplete")
// wait for the child to connect to the parent
select {
case <-initComplete:
logrus.Infof("initComplete is closed; parent and child established the communication channel")
case err := <-errCh:
return err
}
defer func() {
logrus.Info("stopping parent driver")
quit <- struct{}{}
if err := <-errCh; err != nil {
logrus.WithError(err).Warn("parent driver returned error on exit")
}
}()
// let parent expose ports
logrus.Infof("exposing ports %v", cfg.Mappings)
if err := exposePorts(driver, cfg.Mappings); err != nil {
return err
}
// write and close ReadyFD (convention is same as slirp4netns --ready-fd)
logrus.Info("ready")
if _, err := readyW.Write([]byte("1")); err != nil {
return err
}
if err := readyW.Close(); err != nil {
return err
}
// wait for ExitFD to be closed
logrus.Info("waiting for exitfd to be closed")
if _, err := ioutil.ReadAll(exitR); err != nil {
return err
}
return nil
}
func exposePorts(pm rkport.Manager, portMappings []ocicni.PortMapping) error {
ctx := context.TODO()
for _, i := range portMappings {
hostIP := i.HostIP
if hostIP == "" {
hostIP = "0.0.0.0"
}
spec := rkport.Spec{
Proto: i.Protocol,
ParentIP: hostIP,
ParentPort: int(i.HostPort),
ChildPort: int(i.ContainerPort),
}
if err := rkportutil.ValidatePortSpec(spec, nil); err != nil {
return err
}
if _, err := pm.AddPort(ctx, spec); err != nil {
return err
}
}
return nil
}
func child() error {
// load the config from the parent
var opaque map[string]string
if err := json.Unmarshal([]byte(os.Getenv(reexecChildEnvOpaque)), &opaque); err != nil {
return err
}
// start the child driver
quit := make(chan struct{})
errCh := make(chan error)
go func() {
d := rkbuiltin.NewChildDriver(os.Stderr)
dErr := d.RunChildDriver(opaque, quit)
errCh <- dErr
}()
defer func() {
logrus.Info("stopping child driver")
quit <- struct{}{}
if err := <-errCh; err != nil {
logrus.WithError(err).Warn("child driver returned error on exit")
}
}()
// wait for stdin to be closed
if _, err := ioutil.ReadAll(os.Stdin); err != nil {
return err
}
return nil
}
type logrusWriter struct {
prefix string
}
func (w *logrusWriter) Write(p []byte) (int, error) {
logrus.Infof("%s%s", w.prefix, string(p))
return len(p), nil
}

View file

@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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names, trademarks, service marks, or product names of the Licensor,
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agreed to in writing, Licensor provides the Work (and each
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whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
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boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
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Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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limitations under the License.

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@ -0,0 +1,66 @@
// Package msgutil provides utility for JSON message with uint32le header
package msgutil
import (
"bytes"
"encoding/binary"
"encoding/json"
"io"
"github.com/pkg/errors"
)
const (
maxLength = 1 << 16
)
func MarshalToWriter(w io.Writer, x interface{}) (int, error) {
b, err := json.Marshal(x)
if err != nil {
return 0, err
}
if len(b) > maxLength {
return 0, errors.Errorf("bad message length: %d (max: %d)", len(b), maxLength)
}
h := make([]byte, 4)
binary.LittleEndian.PutUint32(h, uint32(len(b)))
return w.Write(append(h, b...))
}
func UnmarshalFromReader(r io.Reader, x interface{}) (int, error) {
hdr := make([]byte, 4)
n, err := r.Read(hdr)
if err != nil {
return n, err
}
if n != 4 {
return n, errors.Errorf("read %d bytes, expected 4 bytes", n)
}
bLen := binary.LittleEndian.Uint32(hdr)
if bLen > maxLength || bLen < 1 {
return n, errors.Errorf("bad message length: %d (max: %d)", bLen, maxLength)
}
b := make([]byte, bLen)
n, err = r.Read(b)
if err != nil {
return 4 + n, err
}
if n != int(bLen) {
return 4 + n, errors.Errorf("read %d bytes, expected %d bytes", n, bLen)
}
return 4 + n, json.Unmarshal(b, x)
}
func Marshal(x interface{}) ([]byte, error) {
var b bytes.Buffer
_, err := MarshalToWriter(&b, x)
return b.Bytes(), err
}
func Unmarshal(b []byte, x interface{}) error {
n, err := UnmarshalFromReader(bytes.NewReader(b), x)
if n != len(b) {
return errors.Errorf("read %d bytes, expected %d bytes", n, len(b))
}
return err
}

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@ -0,0 +1,14 @@
package builtin
import (
"io"
"github.com/rootless-containers/rootlesskit/pkg/port"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/child"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent"
)
var (
NewParentDriver func(logWriter io.Writer, stateDir string) (port.ParentDriver, error) = parent.NewDriver
NewChildDriver func(logWriter io.Writer) port.ChildDriver = child.NewDriver
)

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@ -0,0 +1,134 @@
package child
import (
"fmt"
"io"
"net"
"os"
"github.com/pkg/errors"
"golang.org/x/sys/unix"
"github.com/rootless-containers/rootlesskit/pkg/msgutil"
"github.com/rootless-containers/rootlesskit/pkg/port"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/msg"
opaquepkg "github.com/rootless-containers/rootlesskit/pkg/port/builtin/opaque"
)
func NewDriver(logWriter io.Writer) port.ChildDriver {
return &childDriver{
logWriter: logWriter,
}
}
type childDriver struct {
logWriter io.Writer
}
func (d *childDriver) RunChildDriver(opaque map[string]string, quit <-chan struct{}) error {
socketPath := opaque[opaquepkg.SocketPath]
if socketPath == "" {
return errors.New("socket path not set")
}
childReadyPipePath := opaque[opaquepkg.ChildReadyPipePath]
if childReadyPipePath == "" {
return errors.New("child ready pipe path not set")
}
childReadyPipeW, err := os.OpenFile(childReadyPipePath, os.O_WRONLY, os.ModeNamedPipe)
if err != nil {
return err
}
ln, err := net.ListenUnix("unix", &net.UnixAddr{
Name: socketPath,
Net: "unix",
})
if err != nil {
return err
}
// write nothing, just close
if err = childReadyPipeW.Close(); err != nil {
return err
}
stopAccept := make(chan struct{}, 1)
go func() {
<-quit
stopAccept <- struct{}{}
ln.Close()
}()
for {
c, err := ln.AcceptUnix()
if err != nil {
select {
case <-stopAccept:
return nil
default:
}
return err
}
go func() {
if rerr := d.routine(c); rerr != nil {
rep := msg.Reply{
Error: rerr.Error(),
}
msgutil.MarshalToWriter(c, &rep)
}
c.Close()
}()
}
return nil
}
func (d *childDriver) routine(c *net.UnixConn) error {
var req msg.Request
if _, err := msgutil.UnmarshalFromReader(c, &req); err != nil {
return err
}
switch req.Type {
case msg.RequestTypeInit:
return d.handleConnectInit(c, &req)
case msg.RequestTypeConnect:
return d.handleConnectRequest(c, &req)
default:
return errors.Errorf("unknown request type %q", req.Type)
}
}
func (d *childDriver) handleConnectInit(c *net.UnixConn, req *msg.Request) error {
_, err := msgutil.MarshalToWriter(c, nil)
return err
}
func (d *childDriver) handleConnectRequest(c *net.UnixConn, req *msg.Request) error {
switch req.Proto {
case "tcp":
case "udp":
default:
return errors.Errorf("unknown proto: %q", req.Proto)
}
var dialer net.Dialer
targetConn, err := dialer.Dial(req.Proto, fmt.Sprintf("127.0.0.1:%d", req.Port))
if err != nil {
return err
}
defer targetConn.Close() // no effect on duplicated FD
targetConnFiler, ok := targetConn.(filer)
if !ok {
return errors.Errorf("unknown target connection: %+v", targetConn)
}
targetConnFile, err := targetConnFiler.File()
if err != nil {
return err
}
oob := unix.UnixRights(int(targetConnFile.Fd()))
f, err := c.File()
if err != nil {
return err
}
err = unix.Sendmsg(int(f.Fd()), []byte("dummy"), oob, nil, 0)
return err
}
// filer is implemented by *net.TCPConn and *net.UDPConn
type filer interface {
File() (f *os.File, err error)
}

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@ -0,0 +1,129 @@
package msg
import (
"net"
"time"
"github.com/pkg/errors"
"golang.org/x/sys/unix"
"github.com/rootless-containers/rootlesskit/pkg/msgutil"
"github.com/rootless-containers/rootlesskit/pkg/port"
)
const (
RequestTypeInit = "init"
RequestTypeConnect = "connect"
)
// Request and Response are encoded as JSON with uint32le length header.
type Request struct {
Type string // "init" or "connect"
Proto string // "tcp" or "udp"
Port int
}
// Reply may contain FD as OOB
type Reply struct {
Error string
}
// Initiate sends "init" request to the child UNIX socket.
func Initiate(c *net.UnixConn) error {
req := Request{
Type: RequestTypeInit,
}
if _, err := msgutil.MarshalToWriter(c, &req); err != nil {
return err
}
if err := c.CloseWrite(); err != nil {
return err
}
var rep Reply
if _, err := msgutil.UnmarshalFromReader(c, &rep); err != nil {
return err
}
return c.CloseRead()
}
// ConnectToChild connects to the child UNIX socket, and obtains TCP or UDP socket FD
// that corresponds to the port spec.
func ConnectToChild(c *net.UnixConn, spec port.Spec) (int, error) {
req := Request{
Type: RequestTypeConnect,
Proto: spec.Proto,
Port: spec.ChildPort,
}
if _, err := msgutil.MarshalToWriter(c, &req); err != nil {
return 0, err
}
if err := c.CloseWrite(); err != nil {
return 0, err
}
oobSpace := unix.CmsgSpace(4)
oob := make([]byte, oobSpace)
_, oobN, _, _, err := c.ReadMsgUnix(nil, oob)
if err != nil {
return 0, err
}
if oobN != oobSpace {
return 0, errors.Errorf("expected OOB space %d, got %d", oobSpace, oobN)
}
oob = oob[:oobN]
fd, err := parseFDFromOOB(oob)
if err != nil {
return 0, err
}
if err := c.CloseRead(); err != nil {
return 0, err
}
return fd, nil
}
// ConnectToChildWithSocketPath wraps ConnectToChild
func ConnectToChildWithSocketPath(socketPath string, spec port.Spec) (int, error) {
var dialer net.Dialer
conn, err := dialer.Dial("unix", socketPath)
if err != nil {
return 0, err
}
defer conn.Close()
c := conn.(*net.UnixConn)
return ConnectToChild(c, spec)
}
// ConnectToChildWithRetry retries ConnectToChild every (i*5) milliseconds.
func ConnectToChildWithRetry(socketPath string, spec port.Spec, retries int) (int, error) {
for i := 0; i < retries; i++ {
fd, err := ConnectToChildWithSocketPath(socketPath, spec)
if i == retries-1 && err != nil {
return 0, err
}
if err == nil {
return fd, err
}
// TODO: backoff
time.Sleep(time.Duration(i*5) * time.Millisecond)
}
// NOT REACHED
return 0, errors.New("reached max retry")
}
func parseFDFromOOB(oob []byte) (int, error) {
scms, err := unix.ParseSocketControlMessage(oob)
if err != nil {
return 0, err
}
if len(scms) != 1 {
return 0, errors.Errorf("unexpected scms: %v", scms)
}
scm := scms[0]
fds, err := unix.ParseUnixRights(&scm)
if err != nil {
return 0, err
}
if len(fds) != 1 {
return 0, errors.Errorf("unexpected fds: %v", fds)
}
return fds[0], nil
}

View file

@ -0,0 +1,6 @@
package opaque
const (
SocketPath = "builtin.socketpath"
ChildReadyPipePath = "builtin.readypipepath"
)

View file

@ -0,0 +1,145 @@
package parent
import (
"context"
"io"
"io/ioutil"
"net"
"os"
"path/filepath"
"sync"
"syscall"
"github.com/pkg/errors"
"github.com/rootless-containers/rootlesskit/pkg/port"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/msg"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/opaque"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/tcp"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/udp"
"github.com/rootless-containers/rootlesskit/pkg/port/portutil"
)
// NewDriver for builtin driver.
func NewDriver(logWriter io.Writer, stateDir string) (port.ParentDriver, error) {
// TODO: consider using socketpair FD instead of socket file
socketPath := filepath.Join(stateDir, ".bp.sock")
childReadyPipePath := filepath.Join(stateDir, ".bp-ready.pipe")
// remove the path just in case the previous rootlesskit instance crashed
if err := os.RemoveAll(childReadyPipePath); err != nil {
return nil, errors.Wrapf(err, "cannot remove %s", childReadyPipePath)
}
if err := syscall.Mkfifo(childReadyPipePath, 0600); err != nil {
return nil, errors.Wrapf(err, "cannot mkfifo %s", childReadyPipePath)
}
d := driver{
logWriter: logWriter,
socketPath: socketPath,
childReadyPipePath: childReadyPipePath,
ports: make(map[int]*port.Status, 0),
stoppers: make(map[int]func() error, 0),
nextID: 1,
}
return &d, nil
}
type driver struct {
logWriter io.Writer
socketPath string
childReadyPipePath string
mu sync.Mutex
ports map[int]*port.Status
stoppers map[int]func() error
nextID int
}
func (d *driver) OpaqueForChild() map[string]string {
return map[string]string{
opaque.SocketPath: d.socketPath,
opaque.ChildReadyPipePath: d.childReadyPipePath,
}
}
func (d *driver) RunParentDriver(initComplete chan struct{}, quit <-chan struct{}, _ *port.ChildContext) error {
childReadyPipeR, err := os.OpenFile(d.childReadyPipePath, os.O_RDONLY, os.ModeNamedPipe)
if err != nil {
return err
}
if _, err = ioutil.ReadAll(childReadyPipeR); err != nil {
return err
}
childReadyPipeR.Close()
var dialer net.Dialer
conn, err := dialer.Dial("unix", d.socketPath)
if err != nil {
return err
}
err = msg.Initiate(conn.(*net.UnixConn))
conn.Close()
if err != nil {
return err
}
initComplete <- struct{}{}
<-quit
return nil
}
func (d *driver) AddPort(ctx context.Context, spec port.Spec) (*port.Status, error) {
d.mu.Lock()
err := portutil.ValidatePortSpec(spec, d.ports)
d.mu.Unlock()
if err != nil {
return nil, err
}
routineStopCh := make(chan struct{})
routineStop := func() error {
close(routineStopCh)
return nil // FIXME
}
switch spec.Proto {
case "tcp":
err = tcp.Run(d.socketPath, spec, routineStopCh, d.logWriter)
case "udp":
err = udp.Run(d.socketPath, spec, routineStopCh, d.logWriter)
default:
// NOTREACHED
return nil, errors.New("spec was not validated?")
}
if err != nil {
return nil, err
}
d.mu.Lock()
id := d.nextID
st := port.Status{
ID: id,
Spec: spec,
}
d.ports[id] = &st
d.stoppers[id] = routineStop
d.nextID++
d.mu.Unlock()
return &st, nil
}
func (d *driver) ListPorts(ctx context.Context) ([]port.Status, error) {
var ports []port.Status
d.mu.Lock()
for _, p := range d.ports {
ports = append(ports, *p)
}
d.mu.Unlock()
return ports, nil
}
func (d *driver) RemovePort(ctx context.Context, id int) error {
d.mu.Lock()
defer d.mu.Unlock()
stop, ok := d.stoppers[id]
if !ok {
return errors.Errorf("unknown id: %d", id)
}
err := stop()
delete(d.stoppers, id)
delete(d.ports, id)
return err
}

View file

@ -0,0 +1,104 @@
package tcp
import (
"fmt"
"io"
"net"
"os"
"sync"
"github.com/rootless-containers/rootlesskit/pkg/port"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/msg"
)
func Run(socketPath string, spec port.Spec, stopCh <-chan struct{}, logWriter io.Writer) error {
ln, err := net.Listen("tcp", fmt.Sprintf("%s:%d", spec.ParentIP, spec.ParentPort))
if err != nil {
fmt.Fprintf(logWriter, "listen: %v\n", err)
return err
}
newConns := make(chan net.Conn)
go func() {
for {
c, err := ln.Accept()
if err != nil {
fmt.Fprintf(logWriter, "accept: %v\n", err)
close(newConns)
return
}
newConns <- c
}
}()
go func() {
defer ln.Close()
for {
select {
case c, ok := <-newConns:
if !ok {
return
}
go func() {
if err := copyConnToChild(c, socketPath, spec, stopCh); err != nil {
fmt.Fprintf(logWriter, "copyConnToChild: %v\n", err)
return
}
}()
case <-stopCh:
return
}
}
}()
// no wait
return nil
}
func copyConnToChild(c net.Conn, socketPath string, spec port.Spec, stopCh <-chan struct{}) error {
defer c.Close()
// get fd from the child as an SCM_RIGHTS cmsg
fd, err := msg.ConnectToChildWithRetry(socketPath, spec, 10)
if err != nil {
return err
}
f := os.NewFile(uintptr(fd), "")
defer f.Close()
fc, err := net.FileConn(f)
if err != nil {
return err
}
defer fc.Close()
bicopy(c, fc, stopCh)
return nil
}
// bicopy is based on libnetwork/cmd/proxy/tcp_proxy.go .
// NOTE: sendfile(2) cannot be used for sockets
func bicopy(x, y net.Conn, quit <-chan struct{}) {
var wg sync.WaitGroup
var broker = func(to, from net.Conn) {
io.Copy(to, from)
if fromTCP, ok := from.(*net.TCPConn); ok {
fromTCP.CloseRead()
}
if toTCP, ok := to.(*net.TCPConn); ok {
toTCP.CloseWrite()
}
wg.Done()
}
wg.Add(2)
go broker(x, y)
go broker(y, x)
finish := make(chan struct{})
go func() {
wg.Wait()
close(finish)
}()
select {
case <-quit:
case <-finish:
}
x.Close()
y.Close()
<-finish
}

View file

@ -0,0 +1,60 @@
package udp
import (
"fmt"
"io"
"net"
"os"
"github.com/pkg/errors"
"github.com/rootless-containers/rootlesskit/pkg/port"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/msg"
"github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/udp/udpproxy"
)
func Run(socketPath string, spec port.Spec, stopCh <-chan struct{}, logWriter io.Writer) error {
addr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", spec.ParentIP, spec.ParentPort))
if err != nil {
return err
}
c, err := net.ListenUDP("udp", addr)
if err != nil {
return err
}
udpp := &udpproxy.UDPProxy{
LogWriter: logWriter,
Listener: c,
BackendDial: func() (*net.UDPConn, error) {
// get fd from the child as an SCM_RIGHTS cmsg
fd, err := msg.ConnectToChildWithRetry(socketPath, spec, 10)
if err != nil {
return nil, err
}
f := os.NewFile(uintptr(fd), "")
defer f.Close()
fc, err := net.FileConn(f)
if err != nil {
return nil, err
}
uc, ok := fc.(*net.UDPConn)
if !ok {
return nil, errors.Errorf("file conn doesn't implement *net.UDPConn: %+v", fc)
}
return uc, nil
},
}
go udpp.Run()
go func() {
for {
select {
case <-stopCh:
// udpp.Close closes ln as well
udpp.Close()
return
}
}
}()
// no wait
return nil
}

View file

@ -0,0 +1,150 @@
// Package udpproxy is from https://raw.githubusercontent.com/docker/libnetwork/fec6476dfa21380bf8ee4d74048515d968c1ee63/cmd/proxy/udp_proxy.go
package udpproxy
import (
"encoding/binary"
"fmt"
"io"
"net"
"strings"
"sync"
"syscall"
"time"
)
const (
// UDPConnTrackTimeout is the timeout used for UDP connection tracking
UDPConnTrackTimeout = 90 * time.Second
// UDPBufSize is the buffer size for the UDP proxy
UDPBufSize = 65507
)
// A net.Addr where the IP is split into two fields so you can use it as a key
// in a map:
type connTrackKey struct {
IPHigh uint64
IPLow uint64
Port int
}
func newConnTrackKey(addr *net.UDPAddr) *connTrackKey {
if len(addr.IP) == net.IPv4len {
return &connTrackKey{
IPHigh: 0,
IPLow: uint64(binary.BigEndian.Uint32(addr.IP)),
Port: addr.Port,
}
}
return &connTrackKey{
IPHigh: binary.BigEndian.Uint64(addr.IP[:8]),
IPLow: binary.BigEndian.Uint64(addr.IP[8:]),
Port: addr.Port,
}
}
type connTrackMap map[connTrackKey]*net.UDPConn
// UDPProxy is proxy for which handles UDP datagrams.
// From libnetwork udp_proxy.go .
type UDPProxy struct {
LogWriter io.Writer
Listener *net.UDPConn
BackendDial func() (*net.UDPConn, error)
connTrackTable connTrackMap
connTrackLock sync.Mutex
}
func (proxy *UDPProxy) replyLoop(proxyConn *net.UDPConn, clientAddr *net.UDPAddr, clientKey *connTrackKey) {
defer func() {
proxy.connTrackLock.Lock()
delete(proxy.connTrackTable, *clientKey)
proxy.connTrackLock.Unlock()
proxyConn.Close()
}()
readBuf := make([]byte, UDPBufSize)
for {
proxyConn.SetReadDeadline(time.Now().Add(UDPConnTrackTimeout))
again:
read, err := proxyConn.Read(readBuf)
if err != nil {
if err, ok := err.(*net.OpError); ok && err.Err == syscall.ECONNREFUSED {
// This will happen if the last write failed
// (e.g: nothing is actually listening on the
// proxied port on the container), ignore it
// and continue until UDPConnTrackTimeout
// expires:
goto again
}
return
}
for i := 0; i != read; {
written, err := proxy.Listener.WriteToUDP(readBuf[i:read], clientAddr)
if err != nil {
return
}
i += written
}
}
}
// Run starts forwarding the traffic using UDP.
func (proxy *UDPProxy) Run() {
proxy.connTrackTable = make(connTrackMap)
readBuf := make([]byte, UDPBufSize)
for {
read, from, err := proxy.Listener.ReadFromUDP(readBuf)
if err != nil {
// NOTE: Apparently ReadFrom doesn't return
// ECONNREFUSED like Read do (see comment in
// UDPProxy.replyLoop)
if !isClosedError(err) {
fmt.Fprintf(proxy.LogWriter, "Stopping proxy on udp: %v\n", err)
}
break
}
fromKey := newConnTrackKey(from)
proxy.connTrackLock.Lock()
proxyConn, hit := proxy.connTrackTable[*fromKey]
if !hit {
proxyConn, err = proxy.BackendDial()
if err != nil {
fmt.Fprintf(proxy.LogWriter, "Can't proxy a datagram to udp: %v\n", err)
proxy.connTrackLock.Unlock()
continue
}
proxy.connTrackTable[*fromKey] = proxyConn
go proxy.replyLoop(proxyConn, from, fromKey)
}
proxy.connTrackLock.Unlock()
for i := 0; i != read; {
written, err := proxyConn.Write(readBuf[i:read])
if err != nil {
fmt.Fprintf(proxy.LogWriter, "Can't proxy a datagram to udp: %v\n", err)
break
}
i += written
}
}
}
// Close stops forwarding the traffic.
func (proxy *UDPProxy) Close() {
proxy.Listener.Close()
proxy.connTrackLock.Lock()
defer proxy.connTrackLock.Unlock()
for _, conn := range proxy.connTrackTable {
conn.Close()
}
}
func isClosedError(err error) bool {
/* This comparison is ugly, but unfortunately, net.go doesn't export errClosing.
* See:
* http://golang.org/src/pkg/net/net.go
* https://code.google.com/p/go/issues/detail?id=4337
* https://groups.google.com/forum/#!msg/golang-nuts/0_aaCvBmOcM/SptmDyX1XJMJ
*/
return strings.HasSuffix(err.Error(), "use of closed network connection")
}

View file

@ -0,0 +1,51 @@
package port
import (
"context"
"net"
)
type Spec struct {
Proto string `json:"proto,omitempty"` // either "tcp" or "udp". in future "sctp" will be supported as well.
ParentIP string `json:"parentIP,omitempty"` // IPv4 address. can be empty (0.0.0.0).
ParentPort int `json:"parentPort,omitempty"`
ChildPort int `json:"childPort,omitempty"`
}
type Status struct {
ID int `json:"id"`
Spec Spec `json:"spec"`
}
// Manager MUST be thread-safe.
type Manager interface {
AddPort(ctx context.Context, spec Spec) (*Status, error)
ListPorts(ctx context.Context) ([]Status, error)
RemovePort(ctx context.Context, id int) error
}
// ChildContext is used for RunParentDriver
type ChildContext struct {
// PID of the child, can be used for ns-entering to the child namespaces.
PID int
// IP of the tap device
IP net.IP
}
// ParentDriver is a driver for the parent process.
type ParentDriver interface {
Manager
// OpaqueForChild typically consists of socket path
// for controlling child from parent
OpaqueForChild() map[string]string
// RunParentDriver signals initComplete when ParentDriver is ready to
// serve as Manager.
// RunParentDriver blocks until quit is signaled.
//
// ChildContext is optional.
RunParentDriver(initComplete chan struct{}, quit <-chan struct{}, cctx *ChildContext) error
}
type ChildDriver interface {
RunChildDriver(opaque map[string]string, quit <-chan struct{}) error
}

View file

@ -0,0 +1,67 @@
package portutil
import (
"net"
"regexp"
"strconv"
"github.com/pkg/errors"
"github.com/rootless-containers/rootlesskit/pkg/port"
)
// ParsePortSpec parses a Docker-like representation of PortSpec.
// e.g. "127.0.0.1:8080:80/tcp"
func ParsePortSpec(s string) (*port.Spec, error) {
r := regexp.MustCompile("^([0-9a-f\\.]+):([0-9]+):([0-9]+)/([a-z]+)$")
g := r.FindStringSubmatch(s)
if len(g) != 5 {
return nil, errors.Errorf("unexpected PortSpec string: %q", s)
}
parentIP := g[1]
parentPort, err := strconv.Atoi(g[2])
if err != nil {
return nil, errors.Wrapf(err, "unexpected ParentPort in PortSpec string: %q", s)
}
childPort, err := strconv.Atoi(g[3])
if err != nil {
return nil, errors.Wrapf(err, "unexpected ChildPort in PortSpec string: %q", s)
}
proto := g[4]
// validation is up to the caller (as json.Unmarshal doesn't validate values)
return &port.Spec{
Proto: proto,
ParentIP: parentIP,
ParentPort: parentPort,
ChildPort: childPort,
}, nil
}
// ValidatePortSpec validates *port.Spec.
// existingPorts can be optionally passed for detecting conflicts.
func ValidatePortSpec(spec port.Spec, existingPorts map[int]*port.Status) error {
if spec.Proto != "tcp" && spec.Proto != "udp" {
return errors.Errorf("unknown proto: %q", spec.Proto)
}
if spec.ParentIP != "" {
if net.ParseIP(spec.ParentIP) == nil {
return errors.Errorf("invalid ParentIP: %q", spec.ParentIP)
}
}
if spec.ParentPort <= 0 || spec.ParentPort > 65535 {
return errors.Errorf("invalid ParentPort: %q", spec.ParentPort)
}
if spec.ChildPort <= 0 || spec.ChildPort > 65535 {
return errors.Errorf("invalid ChildPort: %q", spec.ChildPort)
}
for id, p := range existingPorts {
sp := p.Spec
sameProto := sp.Proto == spec.Proto
sameParent := sp.ParentIP == spec.ParentIP && sp.ParentPort == spec.ParentPort
sameChild := sp.ChildPort == spec.ChildPort
if sameProto && (sameParent || sameChild) {
return errors.Errorf("conflict with ID %d", id)
}
}
return nil
}

12
vendor/modules.txt vendored
View file

@ -442,6 +442,18 @@ github.com/prometheus/common/model
github.com/prometheus/procfs
github.com/prometheus/procfs/internal/fs
github.com/prometheus/procfs/internal/util
# github.com/rootless-containers/rootlesskit v0.7.1
github.com/rootless-containers/rootlesskit/pkg/msgutil
github.com/rootless-containers/rootlesskit/pkg/port
github.com/rootless-containers/rootlesskit/pkg/port/builtin
github.com/rootless-containers/rootlesskit/pkg/port/builtin/child
github.com/rootless-containers/rootlesskit/pkg/port/builtin/msg
github.com/rootless-containers/rootlesskit/pkg/port/builtin/opaque
github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent
github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/tcp
github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/udp
github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/udp/udpproxy
github.com/rootless-containers/rootlesskit/pkg/port/portutil
# github.com/safchain/ethtool v0.0.0-20190326074333-42ed695e3de8
github.com/safchain/ethtool
# github.com/seccomp/containers-golang v0.0.0-20190312124753-8ca8945ccf5f