From a241e836486a29c9781e07ac77b7628e8b9b5a53 Mon Sep 17 00:00:00 2001 From: Sebastiaan van Stijn Date: Thu, 25 Jul 2024 11:38:28 +0200 Subject: [PATCH] libcontainer/userns: migrate to github.com/moby/sys/userns The userns package was moved to the moby/sys/userns module at commit 3778ae603c706494fd1e2c2faf83b406e38d687d. This patch deprecates the old location, and adds it as an alias for the moby/sys/userns package. Signed-off-by: Sebastiaan van Stijn --- checkpoint.go | 5 +- go.mod | 3 +- go.sum | 6 +- libcontainer/cgroups/devices/v1.go | 2 +- libcontainer/cgroups/devices/v1_test.go | 3 +- libcontainer/cgroups/devices/v2.go | 2 +- libcontainer/cgroups/systemd/user.go | 3 +- libcontainer/cgroups/utils.go | 2 +- libcontainer/rootfs_linux.go | 2 +- .../{userns.go => userns_deprecated.go} | 7 +- libcontainer/userns/userns_linux_test.go | 34 --- restore.go | 2 +- rootless_linux.go | 5 +- vendor/github.com/moby/sys/user/user.go | 1 - vendor/github.com/moby/sys/userns/LICENSE | 202 ++++++++++++++++++ vendor/github.com/moby/sys/userns/userns.go | 16 ++ .../moby/sys}/userns/userns_linux.go | 6 +- .../moby/sys}/userns/userns_linux_fuzzer.go | 0 .../moby/sys}/userns/userns_unsupported.go | 0 vendor/modules.txt | 5 +- 20 files changed, 253 insertions(+), 53 deletions(-) rename libcontainer/userns/{userns.go => userns_deprecated.go} (55%) delete mode 100644 libcontainer/userns/userns_linux_test.go create mode 100644 vendor/github.com/moby/sys/userns/LICENSE create mode 100644 vendor/github.com/moby/sys/userns/userns.go rename {libcontainer => vendor/github.com/moby/sys}/userns/userns_linux.go (73%) rename {libcontainer => vendor/github.com/moby/sys}/userns/userns_linux_fuzzer.go (100%) rename {libcontainer => vendor/github.com/moby/sys}/userns/userns_unsupported.go (100%) diff --git a/checkpoint.go b/checkpoint.go index 1f5f5e73975..c1bcc703ca9 100644 --- a/checkpoint.go +++ b/checkpoint.go @@ -9,12 +9,13 @@ import ( "strconv" criu "github.com/checkpoint-restore/go-criu/v6/rpc" - "github.com/opencontainers/runc/libcontainer" - "github.com/opencontainers/runc/libcontainer/userns" + "github.com/moby/sys/userns" "github.com/opencontainers/runtime-spec/specs-go" "github.com/sirupsen/logrus" "github.com/urfave/cli" "golang.org/x/sys/unix" + + "github.com/opencontainers/runc/libcontainer" ) var checkpointCommand = cli.Command{ diff --git a/go.mod b/go.mod index 98b23ab872d..c32bbb8bdc5 100644 --- a/go.mod +++ b/go.mod @@ -11,7 +11,8 @@ require ( github.com/docker/go-units v0.5.0 github.com/godbus/dbus/v5 v5.1.0 github.com/moby/sys/mountinfo v0.7.1 - github.com/moby/sys/user v0.1.0 + github.com/moby/sys/user v0.3.0 + github.com/moby/sys/userns v0.1.0 github.com/mrunalp/fileutils v0.5.1 github.com/opencontainers/runtime-spec v1.2.0 github.com/opencontainers/selinux v1.11.0 diff --git a/go.sum b/go.sum index 13b88a4850c..449b68c17b5 100644 --- a/go.sum +++ b/go.sum @@ -32,8 +32,10 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY= github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE= github.com/moby/sys/mountinfo v0.7.1 h1:/tTvQaSJRr2FshkhXiIpux6fQ2Zvc4j7tAhMTStAG2g= github.com/moby/sys/mountinfo v0.7.1/go.mod h1:IJb6JQeOklcdMU9F5xQ8ZALD+CUr5VlGpwtX+VE0rpI= -github.com/moby/sys/user v0.1.0 h1:WmZ93f5Ux6het5iituh9x2zAG7NFY9Aqi49jjE1PaQg= -github.com/moby/sys/user v0.1.0/go.mod h1:fKJhFOnsCN6xZ5gSfbM6zaHGgDJMrqt9/reuj4T7MmU= +github.com/moby/sys/user v0.3.0 h1:9ni5DlcW5an3SvRSx4MouotOygvzaXbaSrc/wGDFWPo= +github.com/moby/sys/user v0.3.0/go.mod h1:bG+tYYYJgaMtRKgEmuueC0hJEAZWwtIbZTB+85uoHjs= +github.com/moby/sys/userns v0.1.0 h1:tVLXkFOxVu9A64/yh59slHVv9ahO9UIev4JZusOLG/g= +github.com/moby/sys/userns v0.1.0/go.mod h1:IHUYgu/kao6N8YZlp9Cf444ySSvCmDlmzUcYfDHOl28= github.com/mrunalp/fileutils v0.5.1 h1:F+S7ZlNKnrwHfSwdlgNSkKo67ReVf8o9fel6C3dkm/Q= github.com/mrunalp/fileutils v0.5.1/go.mod h1:M1WthSahJixYnrXQl/DFQuteStB1weuxD2QJNHXfbSQ= github.com/opencontainers/runtime-spec v1.2.0 h1:z97+pHb3uELt/yiAWD691HNHQIF07bE7dzrbT927iTk= diff --git a/libcontainer/cgroups/devices/v1.go b/libcontainer/cgroups/devices/v1.go index 397c00c8d46..4493f0d056d 100644 --- a/libcontainer/cgroups/devices/v1.go +++ b/libcontainer/cgroups/devices/v1.go @@ -5,10 +5,10 @@ import ( "errors" "reflect" + "github.com/moby/sys/userns" "github.com/opencontainers/runc/libcontainer/cgroups" "github.com/opencontainers/runc/libcontainer/configs" "github.com/opencontainers/runc/libcontainer/devices" - "github.com/opencontainers/runc/libcontainer/userns" ) var testingSkipFinalCheck bool diff --git a/libcontainer/cgroups/devices/v1_test.go b/libcontainer/cgroups/devices/v1_test.go index aed1024b2ef..934fb94c132 100644 --- a/libcontainer/cgroups/devices/v1_test.go +++ b/libcontainer/cgroups/devices/v1_test.go @@ -5,11 +5,12 @@ import ( "path" "testing" + "github.com/moby/sys/userns" + "github.com/opencontainers/runc/libcontainer/cgroups" "github.com/opencontainers/runc/libcontainer/cgroups/fscommon" "github.com/opencontainers/runc/libcontainer/configs" "github.com/opencontainers/runc/libcontainer/devices" - "github.com/opencontainers/runc/libcontainer/userns" ) func init() { diff --git a/libcontainer/cgroups/devices/v2.go b/libcontainer/cgroups/devices/v2.go index 4bcf860b5bb..23c092b2afe 100644 --- a/libcontainer/cgroups/devices/v2.go +++ b/libcontainer/cgroups/devices/v2.go @@ -3,11 +3,11 @@ package devices import ( "fmt" + "github.com/moby/sys/userns" "golang.org/x/sys/unix" "github.com/opencontainers/runc/libcontainer/configs" "github.com/opencontainers/runc/libcontainer/devices" - "github.com/opencontainers/runc/libcontainer/userns" ) func isRWM(perms devices.Permissions) bool { diff --git a/libcontainer/cgroups/systemd/user.go b/libcontainer/cgroups/systemd/user.go index 6fa1cc77639..1e18403bae1 100644 --- a/libcontainer/cgroups/systemd/user.go +++ b/libcontainer/cgroups/systemd/user.go @@ -13,8 +13,7 @@ import ( systemdDbus "github.com/coreos/go-systemd/v22/dbus" dbus "github.com/godbus/dbus/v5" - - "github.com/opencontainers/runc/libcontainer/userns" + "github.com/moby/sys/userns" ) // newUserSystemdDbus creates a connection for systemd user-instance. diff --git a/libcontainer/cgroups/utils.go b/libcontainer/cgroups/utils.go index d303cf204c9..67341e690d2 100644 --- a/libcontainer/cgroups/utils.go +++ b/libcontainer/cgroups/utils.go @@ -12,7 +12,7 @@ import ( "sync" "time" - "github.com/opencontainers/runc/libcontainer/userns" + "github.com/moby/sys/userns" "github.com/sirupsen/logrus" "golang.org/x/sys/unix" ) diff --git a/libcontainer/rootfs_linux.go b/libcontainer/rootfs_linux.go index 16878274cae..1037d2a6d60 100644 --- a/libcontainer/rootfs_linux.go +++ b/libcontainer/rootfs_linux.go @@ -14,6 +14,7 @@ import ( securejoin "github.com/cyphar/filepath-securejoin" "github.com/moby/sys/mountinfo" + "github.com/moby/sys/userns" "github.com/mrunalp/fileutils" "github.com/opencontainers/runtime-spec/specs-go" "github.com/opencontainers/selinux/go-selinux/label" @@ -24,7 +25,6 @@ import ( "github.com/opencontainers/runc/libcontainer/cgroups/fs2" "github.com/opencontainers/runc/libcontainer/configs" "github.com/opencontainers/runc/libcontainer/devices" - "github.com/opencontainers/runc/libcontainer/userns" "github.com/opencontainers/runc/libcontainer/utils" ) diff --git a/libcontainer/userns/userns.go b/libcontainer/userns/userns_deprecated.go similarity index 55% rename from libcontainer/userns/userns.go rename to libcontainer/userns/userns_deprecated.go index a07afe07bc8..31107f87295 100644 --- a/libcontainer/userns/userns.go +++ b/libcontainer/userns/userns_deprecated.go @@ -1,8 +1,13 @@ +// Deprecated: use github.com/moby/sys/userns package userns +import "github.com/moby/sys/userns" + // RunningInUserNS detects whether we are currently running in a Linux // user namespace and memoizes the result. It returns false on non-Linux // platforms. +// +// Deprecated: use [userns.RunningInUserNS]. func RunningInUserNS() bool { - return inUserNS() + return userns.RunningInUserNS() } diff --git a/libcontainer/userns/userns_linux_test.go b/libcontainer/userns/userns_linux_test.go deleted file mode 100644 index 25c4ac301de..00000000000 --- a/libcontainer/userns/userns_linux_test.go +++ /dev/null @@ -1,34 +0,0 @@ -package userns - -import "testing" - -func TestUIDMapInUserNS(t *testing.T) { - cases := []struct { - s string - expected bool - }{ - { - s: " 0 0 4294967295\n", - expected: false, - }, - { - s: " 0 0 1\n", - expected: true, - }, - { - s: " 0 1001 1\n 1 231072 65536\n", - expected: true, - }, - { - // file exist but empty (the initial state when userns is created. see man 7 user_namespaces) - s: "", - expected: true, - }, - } - for _, c := range cases { - actual := uidMapInUserNS(c.s) - if c.expected != actual { - t.Fatalf("expected %v, got %v for %q", c.expected, actual, c.s) - } - } -} diff --git a/restore.go b/restore.go index d65afcfc788..f1648eaea57 100644 --- a/restore.go +++ b/restore.go @@ -3,7 +3,7 @@ package main import ( "os" - "github.com/opencontainers/runc/libcontainer/userns" + "github.com/moby/sys/userns" "github.com/sirupsen/logrus" "github.com/urfave/cli" ) diff --git a/rootless_linux.go b/rootless_linux.go index a1f54858635..6ba178b5392 100644 --- a/rootless_linux.go +++ b/rootless_linux.go @@ -3,10 +3,11 @@ package main import ( "os" - "github.com/opencontainers/runc/libcontainer/cgroups/systemd" - "github.com/opencontainers/runc/libcontainer/userns" + "github.com/moby/sys/userns" "github.com/sirupsen/logrus" "github.com/urfave/cli" + + "github.com/opencontainers/runc/libcontainer/cgroups/systemd" ) func shouldUseRootlessCgroupManager(context *cli.Context) (bool, error) { diff --git a/vendor/github.com/moby/sys/user/user.go b/vendor/github.com/moby/sys/user/user.go index 984466d1ab5..198c4936795 100644 --- a/vendor/github.com/moby/sys/user/user.go +++ b/vendor/github.com/moby/sys/user/user.go @@ -197,7 +197,6 @@ func ParseGroupFilter(r io.Reader, filter func(Group) bool) ([]Group, error) { for { var line []byte line, isPrefix, err = rd.ReadLine() - if err != nil { // We should return no error if EOF is reached // without a match. diff --git a/vendor/github.com/moby/sys/userns/LICENSE b/vendor/github.com/moby/sys/userns/LICENSE new file mode 100644 index 00000000000..d6456956733 --- /dev/null +++ b/vendor/github.com/moby/sys/userns/LICENSE @@ -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. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + 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. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/github.com/moby/sys/userns/userns.go b/vendor/github.com/moby/sys/userns/userns.go new file mode 100644 index 00000000000..56b24c44ad0 --- /dev/null +++ b/vendor/github.com/moby/sys/userns/userns.go @@ -0,0 +1,16 @@ +// Package userns provides utilities to detect whether we are currently running +// in a Linux user namespace. +// +// This code was migrated from [libcontainer/runc], which based its implementation +// on code from [lcx/incus]. +// +// [libcontainer/runc]: https://github.com/opencontainers/runc/blob/3778ae603c706494fd1e2c2faf83b406e38d687d/libcontainer/userns/userns_linux.go#L12-L49 +// [lcx/incus]: https://github.com/lxc/incus/blob/e45085dd42f826b3c8c3228e9733c0b6f998eafe/shared/util.go#L678-L700 +package userns + +// RunningInUserNS detects whether we are currently running in a Linux +// user namespace and memoizes the result. It returns false on non-Linux +// platforms. +func RunningInUserNS() bool { + return inUserNS() +} diff --git a/libcontainer/userns/userns_linux.go b/vendor/github.com/moby/sys/userns/userns_linux.go similarity index 73% rename from libcontainer/userns/userns_linux.go rename to vendor/github.com/moby/sys/userns/userns_linux.go index a1462e13bc0..87c1c38eec2 100644 --- a/libcontainer/userns/userns_linux.go +++ b/vendor/github.com/moby/sys/userns/userns_linux.go @@ -11,7 +11,11 @@ var inUserNS = sync.OnceValue(runningInUserNS) // runningInUserNS detects whether we are currently running in a user namespace. // -// Originally copied from https://github.com/lxc/incus/blob/e45085dd42f826b3c8c3228e9733c0b6f998eafe/shared/util.go#L678-L700. +// This code was migrated from [libcontainer/runc] and based on an implementation +// from [lcx/incus]. +// +// [libcontainer/runc]: https://github.com/opencontainers/runc/blob/3778ae603c706494fd1e2c2faf83b406e38d687d/libcontainer/userns/userns_linux.go#L12-L49 +// [lcx/incus]: https://github.com/lxc/incus/blob/e45085dd42f826b3c8c3228e9733c0b6f998eafe/shared/util.go#L678-L700 func runningInUserNS() bool { file, err := os.Open("/proc/self/uid_map") if err != nil { diff --git a/libcontainer/userns/userns_linux_fuzzer.go b/vendor/github.com/moby/sys/userns/userns_linux_fuzzer.go similarity index 100% rename from libcontainer/userns/userns_linux_fuzzer.go rename to vendor/github.com/moby/sys/userns/userns_linux_fuzzer.go diff --git a/libcontainer/userns/userns_unsupported.go b/vendor/github.com/moby/sys/userns/userns_unsupported.go similarity index 100% rename from libcontainer/userns/userns_unsupported.go rename to vendor/github.com/moby/sys/userns/userns_unsupported.go diff --git a/vendor/modules.txt b/vendor/modules.txt index 2a0f5b8eb1c..ca8dc9a01e6 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -36,9 +36,12 @@ github.com/godbus/dbus/v5 # github.com/moby/sys/mountinfo v0.7.1 ## explicit; go 1.16 github.com/moby/sys/mountinfo -# github.com/moby/sys/user v0.1.0 +# github.com/moby/sys/user v0.3.0 ## explicit; go 1.17 github.com/moby/sys/user +# github.com/moby/sys/userns v0.1.0 +## explicit; go 1.21 +github.com/moby/sys/userns # github.com/mrunalp/fileutils v0.5.1 ## explicit; go 1.13 github.com/mrunalp/fileutils