diff --git a/api/next.pb.txt b/api/next.pb.txt index ce9ce4c96..592bab979 100644 --- a/api/next.pb.txt +++ b/api/next.pb.txt @@ -3472,6 +3472,20 @@ file { type: TYPE_STRING json_name: "uuid" } + field { + name: "pid" + number: 2 + label: LABEL_OPTIONAL + type: TYPE_UINT64 + json_name: "pid" + } + field { + name: "pidns" + number: 3 + label: LABEL_OPTIONAL + type: TYPE_UINT64 + json_name: "pidns" + } } service { name: "Introspection" diff --git a/api/services/introspection/v1/introspection.pb.go b/api/services/introspection/v1/introspection.pb.go index e852f7bdd..aeef7c3a0 100644 --- a/api/services/introspection/v1/introspection.pb.go +++ b/api/services/introspection/v1/introspection.pb.go @@ -272,7 +272,9 @@ type ServerResponse struct { sizeCache protoimpl.SizeCache unknownFields protoimpl.UnknownFields - UUID string `protobuf:"bytes,1,opt,name=uuid,proto3" json:"uuid,omitempty"` + UUID string `protobuf:"bytes,1,opt,name=uuid,proto3" json:"uuid,omitempty"` + Pid uint64 `protobuf:"varint,2,opt,name=pid,proto3" json:"pid,omitempty"` + Pidns uint64 `protobuf:"varint,3,opt,name=pidns,proto3" json:"pidns,omitempty"` // PID namespace, such as 4026531836 } func (x *ServerResponse) Reset() { @@ -314,6 +316,20 @@ func (x *ServerResponse) GetUUID() string { return "" } +func (x *ServerResponse) GetPid() uint64 { + if x != nil { + return x.Pid + } + return 0 +} + +func (x *ServerResponse) GetPidns() uint64 { + if x != nil { + return x.Pidns + } + return 0 +} + var File_github_com_containerd_containerd_api_services_introspection_v1_introspection_proto protoreflect.FileDescriptor var file_github_com_containerd_containerd_api_services_introspection_v1_introspection_proto_rawDesc = []byte{ @@ -362,29 +378,32 @@ var file_github_com_containerd_containerd_api_services_introspection_v1_introspe 0x20, 0x03, 0x28, 0x0b, 0x32, 0x2c, 0x2e, 0x63, 0x6f, 0x6e, 0x74, 0x61, 0x69, 0x6e, 0x65, 0x72, 0x64, 0x2e, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x73, 0x2e, 0x69, 0x6e, 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pidns = 3; // PID namespace, such as 4026531836 } diff --git a/cmd/ctr/app/main.go b/cmd/ctr/app/main.go index f2a352f1a..fa816b718 100644 --- a/cmd/ctr/app/main.go +++ b/cmd/ctr/app/main.go @@ -24,6 +24,7 @@ import ( "github.com/containerd/containerd/cmd/ctr/commands/content" "github.com/containerd/containerd/cmd/ctr/commands/events" "github.com/containerd/containerd/cmd/ctr/commands/images" + "github.com/containerd/containerd/cmd/ctr/commands/info" "github.com/containerd/containerd/cmd/ctr/commands/install" "github.com/containerd/containerd/cmd/ctr/commands/leases" namespacesCmd "github.com/containerd/containerd/cmd/ctr/commands/namespaces" @@ -116,6 +117,7 @@ containerd CLI install.Command, ociCmd.Command, sandboxes.Command, + info.Command, }, extraCmds...) app.Before = func(context *cli.Context) error { if context.GlobalBool("debug") { diff --git a/cmd/ctr/commands/info/info.go b/cmd/ctr/commands/info/info.go new file mode 100644 index 000000000..c62eea901 --- /dev/null +++ b/cmd/ctr/commands/info/info.go @@ -0,0 +1,48 @@ +/* + Copyright The containerd Authors. + + 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. +*/ + +package info + +import ( + api "github.com/containerd/containerd/api/services/introspection/v1" + "github.com/containerd/containerd/cmd/ctr/commands" + ptypes "github.com/containerd/containerd/protobuf/types" + "github.com/urfave/cli" +) + +type Info struct { + Server *api.ServerResponse `json:"server"` +} + +// Command is a cli command to output the containerd server info +var Command = cli.Command{ + Name: "info", + Usage: "print the server info", + Action: func(context *cli.Context) error { + client, ctx, cancel, err := commands.NewClient(context) + if err != nil { + return err + } + defer cancel() + var info Info + info.Server, err = client.IntrospectionService().Server(ctx, &ptypes.Empty{}) + if err != nil { + return err + } + commands.PrintAsJSON(info) + return nil + }, +} diff --git a/services/introspection/local.go b/services/introspection/local.go index be26f5250..7aa291b47 100644 --- a/services/introspection/local.go +++ b/services/introspection/local.go @@ -20,6 +20,7 @@ import ( context "context" "os" "path/filepath" + "runtime" "sync" api "github.com/containerd/containerd/api/services/introspection/v1" @@ -105,8 +106,18 @@ func (l *Local) Server(ctx context.Context, _ *ptypes.Empty, _ ...grpc.CallOptio if err != nil { return nil, errdefs.ToGRPC(err) } + pid := os.Getpid() + var pidns uint64 + if runtime.GOOS == "linux" { + pidns, err = statPIDNS(pid) + if err != nil { + return nil, errdefs.ToGRPC(err) + } + } return &api.ServerResponse{ - UUID: u, + UUID: u, + Pid: uint64(pid), + Pidns: pidns, }, nil } diff --git a/services/introspection/pidns_linux.go b/services/introspection/pidns_linux.go new file mode 100644 index 000000000..4dce1a5e7 --- /dev/null +++ b/services/introspection/pidns_linux.go @@ -0,0 +1,36 @@ +/* + Copyright The containerd Authors. + + 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. +*/ + +package introspection + +import ( + "fmt" + "os" + "syscall" +) + +func statPIDNS(pid int) (uint64, error) { + f := fmt.Sprintf("/proc/%d/ns/pid", pid) + st, err := os.Stat(f) + if err != nil { + return 0, err + } + stSys, ok := st.Sys().(*syscall.Stat_t) + if !ok { + return 0, fmt.Errorf("%T is not *syscall.Stat_t", st.Sys()) + } + return stSys.Ino, nil +} diff --git a/services/introspection/pidns_others.go b/services/introspection/pidns_others.go new file mode 100644 index 000000000..8b4c47dd9 --- /dev/null +++ b/services/introspection/pidns_others.go @@ -0,0 +1,24 @@ +//go:build !linux +// +build !linux + +/* + Copyright The containerd Authors. + + 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. +*/ + +package introspection + +func statPIDNS(pid int) (uint64, error) { + return 0, nil +}