diff --git a/cli/container.go b/cli/container.go index 5a6f1f322..22ca682a5 100644 --- a/cli/container.go +++ b/cli/container.go @@ -38,6 +38,8 @@ type container struct { sysctls []string networks []string securityOpt []string + capAdd []string + capDrop []string blkioWeight uint16 blkioWeightDevice WeightDevice blkioDeviceReadBps ThrottleBpsDevice @@ -138,6 +140,8 @@ func (c *container) config() (*types.ContainerCreateConfig, error) { Sysctls: sysctls, SecurityOpt: c.securityOpt, NetworkMode: networkMode, + CapAdd: c.capAdd, + CapDrop: c.capDrop, }, NetworkingConfig: networkingConfig, diff --git a/cli/create.go b/cli/create.go index e79d1544b..39ce233a9 100644 --- a/cli/create.go +++ b/cli/create.go @@ -64,6 +64,8 @@ func (cc *CreateCommand) addFlags() { flagSet.StringSliceVar(&cc.sysctls, "sysctl", nil, "Sysctl options") flagSet.StringSliceVar(&cc.networks, "net", nil, "Set networks to container") flagSet.StringSliceVar(&cc.securityOpt, "security-opt", nil, "Security Options") + flagSet.StringSliceVar(&cc.capAdd, "cap-add", nil, "Add Linux capabilities") + flagSet.StringSliceVar(&cc.capDrop, "cap-drop", nil, "Drop Linux capabilities") flagSet.Uint16Var(&cc.blkioWeight, "blkio-weight", 0, "Block IO (relative weight), between 10 and 1000, or 0 to disable") flagSet.Var(&cc.blkioWeightDevice, "blkio-weight-device", "Block IO weight (relative device weight)") flagSet.Var(&cc.blkioDeviceReadBps, "device-read-bps", "Limit read rate (bytes per second) from a device") diff --git a/cli/run.go b/cli/run.go index a3cdf67aa..3eefe7fe7 100644 --- a/cli/run.go +++ b/cli/run.go @@ -73,6 +73,8 @@ func (rc *RunCommand) addFlags() { flagSet.StringSliceVar(&rc.sysctls, "sysctl", nil, "Sysctl options") flagSet.StringSliceVar(&rc.networks, "net", nil, "Set networks to container") flagSet.StringSliceVar(&rc.securityOpt, "security-opt", nil, "Security Options") + flagSet.StringSliceVar(&rc.capAdd, "cap-add", nil, "Add Linux capabilities") + flagSet.StringSliceVar(&rc.capDrop, "cap-drop", nil, "Drop Linux capabilities") flagSet.Uint16Var(&rc.blkioWeight, "blkio-weight", 0, "Block IO (relative weight), between 10 and 1000, or 0 to disable") flagSet.Var(&rc.blkioWeightDevice, "blkio-weight-device", "Block IO weight (relative device weight)") flagSet.Var(&rc.blkioDeviceReadBps, "device-read-bps", "Limit read rate (bytes per second) from a device") diff --git a/daemon/mgr/cri_utils.go b/daemon/mgr/cri_utils.go index ed3e63196..cffc6ff6a 100644 --- a/daemon/mgr/cri_utils.go +++ b/daemon/mgr/cri_utils.go @@ -300,6 +300,12 @@ func modifyHostConfig(sc *runtime.LinuxContainerSecurityContext, hostConfig *api // TODO: apply other security options. + // Apply capability options. + if sc.GetCapabilities() != nil { + hostConfig.CapAdd = sc.GetCapabilities().GetAddCapabilities() + hostConfig.CapDrop = sc.GetCapabilities().GetDropCapabilities() + } + // Apply appArmor options. appArmorSecurityOpts, err := getAppArmorSecurityOpts(sc) if err != nil { diff --git a/daemon/mgr/spec.go b/daemon/mgr/spec.go index 112c6204a..cfe008ddb 100644 --- a/daemon/mgr/spec.go +++ b/daemon/mgr/spec.go @@ -53,6 +53,7 @@ var setupFunc = []SetupFunc{ // linux-platform-specifc spec setupSysctl, setupAppArmor, + setupCapabilities, // blkio spec setupBlkio, diff --git a/daemon/mgr/spec_linux.go b/daemon/mgr/spec_linux.go index b4207e303..557a5157b 100644 --- a/daemon/mgr/spec_linux.go +++ b/daemon/mgr/spec_linux.go @@ -4,6 +4,8 @@ import ( "context" "io/ioutil" "os" + + "github.com/docker/docker/daemon/caps" ) const ( @@ -55,3 +57,21 @@ func setupAppArmor(ctx context.Context, meta *ContainerMeta, spec *SpecWrapper) return nil } + +func setupCapabilities(ctx context.Context, meta *ContainerMeta, spec *SpecWrapper) error { + var caplist []string + var err error + + capabilities := spec.s.Process.Capabilities + if meta.HostConfig.Privileged { + caplist = caps.GetAllCapabilities() + } else if caplist, err = caps.TweakCapabilities(capabilities.Effective, meta.HostConfig.CapAdd, meta.HostConfig.CapDrop); err != nil { + return err + } + capabilities.Effective = caplist + capabilities.Bounding = caplist + capabilities.Permitted = caplist + capabilities.Inheritable = caplist + + return nil +} diff --git a/test/cli_create_test.go b/test/cli_create_test.go index 3b8a63833..4029da59d 100644 --- a/test/cli_create_test.go +++ b/test/cli_create_test.go @@ -166,6 +166,33 @@ func (suite *PouchCreateSuite) TestCreateWithAppArmor(c *check.C) { } } +// TestCreateWithCapability tries to test create a container with capability. +func (suite *PouchCreateSuite) TestCreateWithCapability(c *check.C) { + capability := "NET_ADMIN" + name := "create-capability" + + res := command.PouchRun("create", "--name", name, "--cap-add", capability, busyboxImage, "brctl", "addbr", "foobar") + res.Assert(c, icmd.Success) + + output := command.PouchRun("inspect", name).Stdout() + + result := &types.ContainerJSON{} + if err := json.Unmarshal([]byte(output), result); err != nil { + c.Errorf("failed to decode inspect output: %v", err) + } + c.Assert(result.HostConfig.CapAdd, check.NotNil) + + exist := false + for _, cap := range result.HostConfig.CapAdd { + if cap == capability { + exist = true + } + } + if !exist { + c.Errorf("failed to set capability") + } +} + // TestCreateEnableLxcfs tries to test create a container with lxcfs. func (suite *PouchCreateSuite) TestCreateEnableLxcfs(c *check.C) { name := "create-lxcfs" diff --git a/test/cli_run_test.go b/test/cli_run_test.go index 57e44805e..6a9b2cd03 100644 --- a/test/cli_run_test.go +++ b/test/cli_run_test.go @@ -261,6 +261,16 @@ func (suite *PouchRunSuite) TestRunWithAppArmor(c *check.C) { command.PouchRun("rm", "-f", name).Assert(c, icmd.Success) } +// TestRunWithCapability is to verify run container with capability. +func (suite *PouchRunSuite) TestRunWithCapability(c *check.C) { + capability := "NET_ADMIN" + name := "run-capability" + + res := command.PouchRun("run", "--name", name, "--cap-add", capability, busyboxImage, "brctl", "addbr", "foobar") + res.Assert(c, icmd.Success) + command.PouchRun("rm", "-f", name).Assert(c, icmd.Success) +} + // TestRunWithBlkioWeight is to verify --specific Blkio Weight when running a container. func (suite *PouchRunSuite) TestRunWithBlkioWeight(c *check.C) { name := "test-run-with-blkio-weight" diff --git a/test/cli_start_test.go b/test/cli_start_test.go index b70e94a96..cca38f12d 100644 --- a/test/cli_start_test.go +++ b/test/cli_start_test.go @@ -163,3 +163,13 @@ func (suite *PouchStartSuite) TestStartWithAppArmor(c *check.C) { command.PouchRun("stop", name).Assert(c, icmd.Success) } + +// TestStartWithCapability starts a container with capability. +func (suite *PouchStartSuite) TestStartWithCapability(c *check.C) { + capability := "NET_ADMIN" + name := "start-capability" + + res := command.PouchRun("create", "--name", name, "--cap-add", capability, busyboxImage, "brctl", "addbr", "foobar") + res.Assert(c, icmd.Success) + command.PouchRun("start", name).Assert(c, icmd.Success) +} diff --git a/vendor/github.com/docker/docker/LICENSE b/vendor/github.com/docker/docker/LICENSE new file mode 100644 index 000000000..9c8e20ab8 --- /dev/null +++ b/vendor/github.com/docker/docker/LICENSE @@ -0,0 +1,191 @@ + + Apache License + Version 2.0, January 2004 + https://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 + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent 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 + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + Copyright 2013-2017 Docker, Inc. + + 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 + + https://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/docker/docker/NOTICE b/vendor/github.com/docker/docker/NOTICE new file mode 100644 index 000000000..0c74e15b0 --- /dev/null +++ b/vendor/github.com/docker/docker/NOTICE @@ -0,0 +1,19 @@ +Docker +Copyright 2012-2017 Docker, Inc. + +This product includes software developed at Docker, Inc. (https://www.docker.com). + +This product contains software (https://github.com/kr/pty) developed +by Keith Rarick, licensed under the MIT License. + +The following is courtesy of our legal counsel: + + +Use and transfer of Docker may be subject to certain restrictions by the +United States and other governments. +It is your responsibility to ensure that your use and/or transfer does not +violate applicable laws. + +For more information, please see https://www.bis.doc.gov + +See also https://www.apache.org/dev/crypto.html and/or seek legal counsel. diff --git a/vendor/github.com/docker/docker/daemon/caps/utils_unix.go b/vendor/github.com/docker/docker/daemon/caps/utils_unix.go new file mode 100644 index 000000000..28a8df653 --- /dev/null +++ b/vendor/github.com/docker/docker/daemon/caps/utils_unix.go @@ -0,0 +1,141 @@ +// +build !windows + +package caps + +import ( + "fmt" + "strings" + + "github.com/syndtr/gocapability/capability" +) + +var capabilityList Capabilities + +func init() { + last := capability.CAP_LAST_CAP + // hack for RHEL6 which has no /proc/sys/kernel/cap_last_cap + if last == capability.Cap(63) { + last = capability.CAP_BLOCK_SUSPEND + } + for _, cap := range capability.List() { + if cap > last { + continue + } + capabilityList = append(capabilityList, + &CapabilityMapping{ + Key: "CAP_" + strings.ToUpper(cap.String()), + Value: cap, + }, + ) + } +} + +type ( + // CapabilityMapping maps linux capability name to its value of capability.Cap type + // Capabilities is one of the security systems in Linux Security Module (LSM) + // framework provided by the kernel. + // For more details on capabilities, see http://man7.org/linux/man-pages/man7/capabilities.7.html + CapabilityMapping struct { + Key string `json:"key,omitempty"` + Value capability.Cap `json:"value,omitempty"` + } + // Capabilities contains all CapabilityMapping + Capabilities []*CapabilityMapping +) + +// String returns of CapabilityMapping +func (c *CapabilityMapping) String() string { + return c.Key +} + +// GetCapability returns CapabilityMapping which contains specific key +func GetCapability(key string) *CapabilityMapping { + for _, capp := range capabilityList { + if capp.Key == key { + cpy := *capp + return &cpy + } + } + return nil +} + +// GetAllCapabilities returns all of the capabilities +func GetAllCapabilities() []string { + output := make([]string, len(capabilityList)) + for i, capability := range capabilityList { + output[i] = capability.String() + } + return output +} + +// inSlice tests whether a string is contained in a slice of strings or not. +// Comparison is case insensitive +func inSlice(slice []string, s string) bool { + for _, ss := range slice { + if strings.ToLower(s) == strings.ToLower(ss) { + return true + } + } + return false +} + +// TweakCapabilities can tweak capabilities by adding or dropping capabilities +// based on the basics capabilities. +func TweakCapabilities(basics, adds, drops []string) ([]string, error) { + var ( + newCaps []string + allCaps = GetAllCapabilities() + ) + + // FIXME(tonistiigi): docker format is without CAP_ prefix, oci is with prefix + // Currently they are mixed in here. We should do conversion in one place. + + // look for invalid cap in the drop list + for _, cap := range drops { + if strings.ToLower(cap) == "all" { + continue + } + + if !inSlice(allCaps, "CAP_"+cap) { + return nil, fmt.Errorf("Unknown capability drop: %q", cap) + } + } + + // handle --cap-add=all + if inSlice(adds, "all") { + basics = allCaps + } + + if !inSlice(drops, "all") { + for _, cap := range basics { + // skip `all` already handled above + if strings.ToLower(cap) == "all" { + continue + } + + // if we don't drop `all`, add back all the non-dropped caps + if !inSlice(drops, cap[4:]) { + newCaps = append(newCaps, strings.ToUpper(cap)) + } + } + } + + for _, cap := range adds { + // skip `all` already handled above + if strings.ToLower(cap) == "all" { + continue + } + + cap = "CAP_" + cap + + if !inSlice(allCaps, cap) { + return nil, fmt.Errorf("Unknown capability to add: %q", cap) + } + + // add cap if not already in the list + if !inSlice(newCaps, cap) { + newCaps = append(newCaps, strings.ToUpper(cap)) + } + } + return newCaps, nil +} diff --git a/vendor/github.com/syndtr/gocapability/LICENSE b/vendor/github.com/syndtr/gocapability/LICENSE new file mode 100644 index 000000000..80dd96de7 --- /dev/null +++ b/vendor/github.com/syndtr/gocapability/LICENSE @@ -0,0 +1,24 @@ +Copyright 2013 Suryandaru Triandana +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/github.com/syndtr/gocapability/capability/capability.go b/vendor/github.com/syndtr/gocapability/capability/capability.go new file mode 100644 index 000000000..c07c55794 --- /dev/null +++ b/vendor/github.com/syndtr/gocapability/capability/capability.go @@ -0,0 +1,72 @@ +// Copyright (c) 2013, Suryandaru Triandana +// All rights reserved. +// +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Package capability provides utilities for manipulating POSIX capabilities. +package capability + +type Capabilities interface { + // Get check whether a capability present in the given + // capabilities set. The 'which' value should be one of EFFECTIVE, + // PERMITTED, INHERITABLE, BOUNDING or AMBIENT. + Get(which CapType, what Cap) bool + + // Empty check whether all capability bits of the given capabilities + // set are zero. The 'which' value should be one of EFFECTIVE, + // PERMITTED, INHERITABLE, BOUNDING or AMBIENT. + Empty(which CapType) bool + + // Full check whether all capability bits of the given capabilities + // set are one. The 'which' value should be one of EFFECTIVE, + // PERMITTED, INHERITABLE, BOUNDING or AMBIENT. + Full(which CapType) bool + + // Set sets capabilities of the given capabilities sets. The + // 'which' value should be one or combination (OR'ed) of EFFECTIVE, + // PERMITTED, INHERITABLE, BOUNDING or AMBIENT. + Set(which CapType, caps ...Cap) + + // Unset unsets capabilities of the given capabilities sets. The + // 'which' value should be one or combination (OR'ed) of EFFECTIVE, + // PERMITTED, INHERITABLE, BOUNDING or AMBIENT. + Unset(which CapType, caps ...Cap) + + // Fill sets all bits of the given capabilities kind to one. The + // 'kind' value should be one or combination (OR'ed) of CAPS, + // BOUNDS or AMBS. + Fill(kind CapType) + + // Clear sets all bits of the given capabilities kind to zero. The + // 'kind' value should be one or combination (OR'ed) of CAPS, + // BOUNDS or AMBS. + Clear(kind CapType) + + // String return current capabilities state of the given capabilities + // set as string. The 'which' value should be one of EFFECTIVE, + // PERMITTED, INHERITABLE BOUNDING or AMBIENT + StringCap(which CapType) string + + // String return current capabilities state as string. + String() string + + // Load load actual capabilities value. This will overwrite all + // outstanding changes. + Load() error + + // Apply apply the capabilities settings, so all changes will take + // effect. + Apply(kind CapType) error +} + +// NewPid create new initialized Capabilities object for given pid when it +// is nonzero, or for the current pid if pid is 0 +func NewPid(pid int) (Capabilities, error) { + return newPid(pid) +} + +// NewFile create new initialized Capabilities object for given named file. +func NewFile(name string) (Capabilities, error) { + return newFile(name) +} diff --git a/vendor/github.com/syndtr/gocapability/capability/capability_linux.go b/vendor/github.com/syndtr/gocapability/capability/capability_linux.go new file mode 100644 index 000000000..205e0f701 --- /dev/null +++ b/vendor/github.com/syndtr/gocapability/capability/capability_linux.go @@ -0,0 +1,650 @@ +// Copyright (c) 2013, Suryandaru Triandana +// All rights reserved. +// +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +package capability + +import ( + "bufio" + "errors" + "fmt" + "io" + "os" + "strings" + "syscall" +) + +var errUnknownVers = errors.New("unknown capability version") + +const ( + linuxCapVer1 = 0x19980330 + linuxCapVer2 = 0x20071026 + linuxCapVer3 = 0x20080522 +) + +var ( + capVers uint32 + capLastCap Cap +) + +func init() { + var hdr capHeader + capget(&hdr, nil) + capVers = hdr.version + + if initLastCap() == nil { + CAP_LAST_CAP = capLastCap + if capLastCap > 31 { + capUpperMask = (uint32(1) << (uint(capLastCap) - 31)) - 1 + } else { + capUpperMask = 0 + } + } +} + +func initLastCap() error { + if capLastCap != 0 { + return nil + } + + f, err := os.Open("/proc/sys/kernel/cap_last_cap") + if err != nil { + return err + } + defer f.Close() + + var b []byte = make([]byte, 11) + _, err = f.Read(b) + if err != nil { + return err + } + + fmt.Sscanf(string(b), "%d", &capLastCap) + + return nil +} + +func mkStringCap(c Capabilities, which CapType) (ret string) { + for i, first := Cap(0), true; i <= CAP_LAST_CAP; i++ { + if !c.Get(which, i) { + continue + } + if first { + first = false + } else { + ret += ", " + } + ret += i.String() + } + return +} + +func mkString(c Capabilities, max CapType) (ret string) { + ret = "{" + for i := CapType(1); i <= max; i <<= 1 { + ret += " " + i.String() + "=\"" + if c.Empty(i) { + ret += "empty" + } else if c.Full(i) { + ret += "full" + } else { + ret += c.StringCap(i) + } + ret += "\"" + } + ret += " }" + return +} + +func newPid(pid int) (c Capabilities, err error) { + switch capVers { + case linuxCapVer1: + p := new(capsV1) + p.hdr.version = capVers + p.hdr.pid = pid + c = p + case linuxCapVer2, linuxCapVer3: + p := new(capsV3) + p.hdr.version = capVers + p.hdr.pid = pid + c = p + default: + err = errUnknownVers + return + } + err = c.Load() + if err != nil { + c = nil + } + return +} + +type capsV1 struct { + hdr capHeader + data capData +} + +func (c *capsV1) Get(which CapType, what Cap) bool { + if what > 32 { + return false + } + + switch which { + case EFFECTIVE: + return (1< 32 { + continue + } + + if which&EFFECTIVE != 0 { + c.data.effective |= 1 << uint(what) + } + if which&PERMITTED != 0 { + c.data.permitted |= 1 << uint(what) + } + if which&INHERITABLE != 0 { + c.data.inheritable |= 1 << uint(what) + } + } +} + +func (c *capsV1) Unset(which CapType, caps ...Cap) { + for _, what := range caps { + if what > 32 { + continue + } + + if which&EFFECTIVE != 0 { + c.data.effective &= ^(1 << uint(what)) + } + if which&PERMITTED != 0 { + c.data.permitted &= ^(1 << uint(what)) + } + if which&INHERITABLE != 0 { + c.data.inheritable &= ^(1 << uint(what)) + } + } +} + +func (c *capsV1) Fill(kind CapType) { + if kind&CAPS == CAPS { + c.data.effective = 0x7fffffff + c.data.permitted = 0x7fffffff + c.data.inheritable = 0 + } +} + +func (c *capsV1) Clear(kind CapType) { + if kind&CAPS == CAPS { + c.data.effective = 0 + c.data.permitted = 0 + c.data.inheritable = 0 + } +} + +func (c *capsV1) StringCap(which CapType) (ret string) { + return mkStringCap(c, which) +} + +func (c *capsV1) String() (ret string) { + return mkString(c, BOUNDING) +} + +func (c *capsV1) Load() (err error) { + return capget(&c.hdr, &c.data) +} + +func (c *capsV1) Apply(kind CapType) error { + if kind&CAPS == CAPS { + return capset(&c.hdr, &c.data) + } + return nil +} + +type capsV3 struct { + hdr capHeader + data [2]capData + bounds [2]uint32 + ambient [2]uint32 +} + +func (c *capsV3) Get(which CapType, what Cap) bool { + var i uint + if what > 31 { + i = uint(what) >> 5 + what %= 32 + } + + switch which { + case EFFECTIVE: + return (1< 31 { + i = uint(what) >> 5 + what %= 32 + } + + if which&EFFECTIVE != 0 { + c.data[i].effective |= 1 << uint(what) + } + if which&PERMITTED != 0 { + c.data[i].permitted |= 1 << uint(what) + } + if which&INHERITABLE != 0 { + c.data[i].inheritable |= 1 << uint(what) + } + if which&BOUNDING != 0 { + c.bounds[i] |= 1 << uint(what) + } + if which&AMBIENT != 0 { + c.ambient[i] |= 1 << uint(what) + } + } +} + +func (c *capsV3) Unset(which CapType, caps ...Cap) { + for _, what := range caps { + var i uint + if what > 31 { + i = uint(what) >> 5 + what %= 32 + } + + if which&EFFECTIVE != 0 { + c.data[i].effective &= ^(1 << uint(what)) + } + if which&PERMITTED != 0 { + c.data[i].permitted &= ^(1 << uint(what)) + } + if which&INHERITABLE != 0 { + c.data[i].inheritable &= ^(1 << uint(what)) + } + if which&BOUNDING != 0 { + c.bounds[i] &= ^(1 << uint(what)) + } + if which&AMBIENT != 0 { + c.ambient[i] &= ^(1 << uint(what)) + } + } +} + +func (c *capsV3) Fill(kind CapType) { + if kind&CAPS == CAPS { + c.data[0].effective = 0xffffffff + c.data[0].permitted = 0xffffffff + c.data[0].inheritable = 0 + c.data[1].effective = 0xffffffff + c.data[1].permitted = 0xffffffff + c.data[1].inheritable = 0 + } + + if kind&BOUNDS == BOUNDS { + c.bounds[0] = 0xffffffff + c.bounds[1] = 0xffffffff + } + if kind&AMBS == AMBS { + c.ambient[0] = 0xffffffff + c.ambient[1] = 0xffffffff + } +} + +func (c *capsV3) Clear(kind CapType) { + if kind&CAPS == CAPS { + c.data[0].effective = 0 + c.data[0].permitted = 0 + c.data[0].inheritable = 0 + c.data[1].effective = 0 + c.data[1].permitted = 0 + c.data[1].inheritable = 0 + } + + if kind&BOUNDS == BOUNDS { + c.bounds[0] = 0 + c.bounds[1] = 0 + } + if kind&AMBS == AMBS { + c.ambient[0] = 0 + c.ambient[1] = 0 + } +} + +func (c *capsV3) StringCap(which CapType) (ret string) { + return mkStringCap(c, which) +} + +func (c *capsV3) String() (ret string) { + return mkString(c, BOUNDING) +} + +func (c *capsV3) Load() (err error) { + err = capget(&c.hdr, &c.data[0]) + if err != nil { + return + } + + var status_path string + + if c.hdr.pid == 0 { + status_path = fmt.Sprintf("/proc/self/status") + } else { + status_path = fmt.Sprintf("/proc/%d/status", c.hdr.pid) + } + + f, err := os.Open(status_path) + if err != nil { + return + } + b := bufio.NewReader(f) + for { + line, e := b.ReadString('\n') + if e != nil { + if e != io.EOF { + err = e + } + break + } + if strings.HasPrefix(line, "CapB") { + fmt.Sscanf(line[4:], "nd: %08x%08x", &c.bounds[1], &c.bounds[0]) + continue + } + if strings.HasPrefix(line, "CapA") { + fmt.Sscanf(line[4:], "mb: %08x%08x", &c.ambient[1], &c.ambient[0]) + continue + } + } + f.Close() + + return +} + +func (c *capsV3) Apply(kind CapType) (err error) { + if kind&BOUNDS == BOUNDS { + var data [2]capData + err = capget(&c.hdr, &data[0]) + if err != nil { + return + } + if (1< 31 { + if c.data.version == 1 { + return false + } + i = uint(what) >> 5 + what %= 32 + } + + switch which { + case EFFECTIVE: + return (1< 31 { + if c.data.version == 1 { + continue + } + i = uint(what) >> 5 + what %= 32 + } + + if which&EFFECTIVE != 0 { + c.data.effective[i] |= 1 << uint(what) + } + if which&PERMITTED != 0 { + c.data.data[i].permitted |= 1 << uint(what) + } + if which&INHERITABLE != 0 { + c.data.data[i].inheritable |= 1 << uint(what) + } + } +} + +func (c *capsFile) Unset(which CapType, caps ...Cap) { + for _, what := range caps { + var i uint + if what > 31 { + if c.data.version == 1 { + continue + } + i = uint(what) >> 5 + what %= 32 + } + + if which&EFFECTIVE != 0 { + c.data.effective[i] &= ^(1 << uint(what)) + } + if which&PERMITTED != 0 { + c.data.data[i].permitted &= ^(1 << uint(what)) + } + if which&INHERITABLE != 0 { + c.data.data[i].inheritable &= ^(1 << uint(what)) + } + } +} + +func (c *capsFile) Fill(kind CapType) { + if kind&CAPS == CAPS { + c.data.effective[0] = 0xffffffff + c.data.data[0].permitted = 0xffffffff + c.data.data[0].inheritable = 0 + if c.data.version == 2 { + c.data.effective[1] = 0xffffffff + c.data.data[1].permitted = 0xffffffff + c.data.data[1].inheritable = 0 + } + } +} + +func (c *capsFile) Clear(kind CapType) { + if kind&CAPS == CAPS { + c.data.effective[0] = 0 + c.data.data[0].permitted = 0 + c.data.data[0].inheritable = 0 + if c.data.version == 2 { + c.data.effective[1] = 0 + c.data.data[1].permitted = 0 + c.data.data[1].inheritable = 0 + } + } +} + +func (c *capsFile) StringCap(which CapType) (ret string) { + return mkStringCap(c, which) +} + +func (c *capsFile) String() (ret string) { + return mkString(c, INHERITABLE) +} + +func (c *capsFile) Load() (err error) { + return getVfsCap(c.path, &c.data) +} + +func (c *capsFile) Apply(kind CapType) (err error) { + if kind&CAPS == CAPS { + return setVfsCap(c.path, &c.data) + } + return +} diff --git a/vendor/github.com/syndtr/gocapability/capability/capability_noop.go b/vendor/github.com/syndtr/gocapability/capability/capability_noop.go new file mode 100644 index 000000000..9bb3070c5 --- /dev/null +++ b/vendor/github.com/syndtr/gocapability/capability/capability_noop.go @@ -0,0 +1,19 @@ +// Copyright (c) 2013, Suryandaru Triandana +// All rights reserved. +// +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// +build !linux + +package capability + +import "errors" + +func newPid(pid int) (Capabilities, error) { + return nil, errors.New("not supported") +} + +func newFile(path string) (Capabilities, error) { + return nil, errors.New("not supported") +} diff --git a/vendor/github.com/syndtr/gocapability/capability/enum.go b/vendor/github.com/syndtr/gocapability/capability/enum.go new file mode 100644 index 000000000..693817317 --- /dev/null +++ b/vendor/github.com/syndtr/gocapability/capability/enum.go @@ -0,0 +1,268 @@ +// Copyright (c) 2013, Suryandaru Triandana +// All rights reserved. +// +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +package capability + +type CapType uint + +func (c CapType) String() string { + switch c { + case EFFECTIVE: + return "effective" + case PERMITTED: + return "permitted" + case INHERITABLE: + return "inheritable" + case BOUNDING: + return "bounding" + case CAPS: + return "caps" + case AMBIENT: + return "ambient" + } + return "unknown" +} + +const ( + EFFECTIVE CapType = 1 << iota + PERMITTED + INHERITABLE + BOUNDING + AMBIENT + + CAPS = EFFECTIVE | PERMITTED | INHERITABLE + BOUNDS = BOUNDING + AMBS = AMBIENT +) + +//go:generate go run enumgen/gen.go +type Cap int + +// POSIX-draft defined capabilities. +const ( + // In a system with the [_POSIX_CHOWN_RESTRICTED] option defined, this + // overrides the restriction of changing file ownership and group + // ownership. + CAP_CHOWN = Cap(0) + + // Override all DAC access, including ACL execute access if + // [_POSIX_ACL] is defined. Excluding DAC access covered by + // CAP_LINUX_IMMUTABLE. + CAP_DAC_OVERRIDE = Cap(1) + + // Overrides all DAC restrictions regarding read and search on files + // and directories, including ACL restrictions if [_POSIX_ACL] is + // defined. Excluding DAC access covered by CAP_LINUX_IMMUTABLE. + CAP_DAC_READ_SEARCH = Cap(2) + + // Overrides all restrictions about allowed operations on files, where + // file owner ID must be equal to the user ID, except where CAP_FSETID + // is applicable. It doesn't override MAC and DAC restrictions. + CAP_FOWNER = Cap(3) + + // Overrides the following restrictions that the effective user ID + // shall match the file owner ID when setting the S_ISUID and S_ISGID + // bits on that file; that the effective group ID (or one of the + // supplementary group IDs) shall match the file owner ID when setting + // the S_ISGID bit on that file; that the S_ISUID and S_ISGID bits are + // cleared on successful return from chown(2) (not implemented). + CAP_FSETID = Cap(4) + + // Overrides the restriction that the real or effective user ID of a + // process sending a signal must match the real or effective user ID + // of the process receiving the signal. + CAP_KILL = Cap(5) + + // Allows setgid(2) manipulation + // Allows setgroups(2) + // Allows forged gids on socket credentials passing. + CAP_SETGID = Cap(6) + + // Allows set*uid(2) manipulation (including fsuid). + // Allows forged pids on socket credentials passing. + CAP_SETUID = Cap(7) + + // Linux-specific capabilities + + // Without VFS support for capabilities: + // Transfer any capability in your permitted set to any pid, + // remove any capability in your permitted set from any pid + // With VFS support for capabilities (neither of above, but) + // Add any capability from current's capability bounding set + // to the current process' inheritable set + // Allow taking bits out of capability bounding set + // Allow modification of the securebits for a process + CAP_SETPCAP = Cap(8) + + // Allow modification of S_IMMUTABLE and S_APPEND file attributes + CAP_LINUX_IMMUTABLE = Cap(9) + + // Allows binding to TCP/UDP sockets below 1024 + // Allows binding to ATM VCIs below 32 + CAP_NET_BIND_SERVICE = Cap(10) + + // Allow broadcasting, listen to multicast + CAP_NET_BROADCAST = Cap(11) + + // Allow interface configuration + // Allow administration of IP firewall, masquerading and accounting + // Allow setting debug option on sockets + // Allow modification of routing tables + // Allow setting arbitrary process / process group ownership on + // sockets + // Allow binding to any address for transparent proxying (also via NET_RAW) + // Allow setting TOS (type of service) + // Allow setting promiscuous mode + // Allow clearing driver statistics + // Allow multicasting + // Allow read/write of device-specific registers + // Allow activation of ATM control sockets + CAP_NET_ADMIN = Cap(12) + + // Allow use of RAW sockets + // Allow use of PACKET sockets + // Allow binding to any address for transparent proxying (also via NET_ADMIN) + CAP_NET_RAW = Cap(13) + + // Allow locking of shared memory segments + // Allow mlock and mlockall (which doesn't really have anything to do + // with IPC) + CAP_IPC_LOCK = Cap(14) + + // Override IPC ownership checks + CAP_IPC_OWNER = Cap(15) + + // Insert and remove kernel modules - modify kernel without limit + CAP_SYS_MODULE = Cap(16) + + // Allow ioperm/iopl access + // Allow sending USB messages to any device via /proc/bus/usb + CAP_SYS_RAWIO = Cap(17) + + // Allow use of chroot() + CAP_SYS_CHROOT = Cap(18) + + // Allow ptrace() of any process + CAP_SYS_PTRACE = Cap(19) + + // Allow configuration of process accounting + CAP_SYS_PACCT = Cap(20) + + // Allow configuration of the secure attention key + // Allow administration of the random device + // Allow examination and configuration of disk quotas + // Allow setting the domainname + // Allow setting the hostname + // Allow calling bdflush() + // Allow mount() and umount(), setting up new smb connection + // Allow some autofs root ioctls + // Allow nfsservctl + // Allow VM86_REQUEST_IRQ + // Allow to read/write pci config on alpha + // Allow irix_prctl on mips (setstacksize) + // Allow flushing all cache on m68k (sys_cacheflush) + // Allow removing semaphores + // Used instead of CAP_CHOWN to "chown" IPC message queues, semaphores + // and shared memory + // Allow locking/unlocking of shared memory segment + // Allow turning swap on/off + // Allow forged pids on socket credentials passing + // Allow setting readahead and flushing buffers on block devices + // Allow setting geometry in floppy driver + // Allow turning DMA on/off in xd driver + // Allow administration of md devices (mostly the above, but some + // extra ioctls) + // Allow tuning the ide driver + // Allow access to the nvram device + // Allow administration of apm_bios, serial and bttv (TV) device + // Allow manufacturer commands in isdn CAPI support driver + // Allow reading non-standardized portions of pci configuration space + // Allow DDI debug ioctl on sbpcd driver + // Allow setting up serial ports + // Allow sending raw qic-117 commands + // Allow enabling/disabling tagged queuing on SCSI controllers and sending + // arbitrary SCSI commands + // Allow setting encryption key on loopback filesystem + // Allow setting zone reclaim policy + CAP_SYS_ADMIN = Cap(21) + + // Allow use of reboot() + CAP_SYS_BOOT = Cap(22) + + // Allow raising priority and setting priority on other (different + // UID) processes + // Allow use of FIFO and round-robin (realtime) scheduling on own + // processes and setting the scheduling algorithm used by another + // process. + // Allow setting cpu affinity on other processes + CAP_SYS_NICE = Cap(23) + + // Override resource limits. Set resource limits. + // Override quota limits. + // Override reserved space on ext2 filesystem + // Modify data journaling mode on ext3 filesystem (uses journaling + // resources) + // NOTE: ext2 honors fsuid when checking for resource overrides, so + // you can override using fsuid too + // Override size restrictions on IPC message queues + // Allow more than 64hz interrupts from the real-time clock + // Override max number of consoles on console allocation + // Override max number of keymaps + CAP_SYS_RESOURCE = Cap(24) + + // Allow manipulation of system clock + // Allow irix_stime on mips + // Allow setting the real-time clock + CAP_SYS_TIME = Cap(25) + + // Allow configuration of tty devices + // Allow vhangup() of tty + CAP_SYS_TTY_CONFIG = Cap(26) + + // Allow the privileged aspects of mknod() + CAP_MKNOD = Cap(27) + + // Allow taking of leases on files + CAP_LEASE = Cap(28) + + CAP_AUDIT_WRITE = Cap(29) + CAP_AUDIT_CONTROL = Cap(30) + CAP_SETFCAP = Cap(31) + + // Override MAC access. + // The base kernel enforces no MAC policy. + // An LSM may enforce a MAC policy, and if it does and it chooses + // to implement capability based overrides of that policy, this is + // the capability it should use to do so. + CAP_MAC_OVERRIDE = Cap(32) + + // Allow MAC configuration or state changes. + // The base kernel requires no MAC configuration. + // An LSM may enforce a MAC policy, and if it does and it chooses + // to implement capability based checks on modifications to that + // policy or the data required to maintain it, this is the + // capability it should use to do so. + CAP_MAC_ADMIN = Cap(33) + + // Allow configuring the kernel's syslog (printk behaviour) + CAP_SYSLOG = Cap(34) + + // Allow triggering something that will wake the system + CAP_WAKE_ALARM = Cap(35) + + // Allow preventing system suspends + CAP_BLOCK_SUSPEND = Cap(36) + + // Allow reading audit messages from the kernel + CAP_AUDIT_READ = Cap(37) +) + +var ( + // Highest valid capability of the running kernel. + CAP_LAST_CAP = Cap(63) + + capUpperMask = ^uint32(0) +) diff --git a/vendor/github.com/syndtr/gocapability/capability/enum_gen.go b/vendor/github.com/syndtr/gocapability/capability/enum_gen.go new file mode 100644 index 000000000..b9e6d2d5e --- /dev/null +++ b/vendor/github.com/syndtr/gocapability/capability/enum_gen.go @@ -0,0 +1,129 @@ +// generated file; DO NOT EDIT - use go generate in directory with source + +package capability + +func (c Cap) String() string { + switch c { + case CAP_CHOWN: + return "chown" + case CAP_DAC_OVERRIDE: + return "dac_override" + case CAP_DAC_READ_SEARCH: + return "dac_read_search" + case CAP_FOWNER: + return "fowner" + case CAP_FSETID: + return "fsetid" + case CAP_KILL: + return "kill" + case CAP_SETGID: + return "setgid" + case CAP_SETUID: + return "setuid" + case CAP_SETPCAP: + return "setpcap" + case CAP_LINUX_IMMUTABLE: + return "linux_immutable" + case CAP_NET_BIND_SERVICE: + return "net_bind_service" + case CAP_NET_BROADCAST: + return "net_broadcast" + case CAP_NET_ADMIN: + return "net_admin" + case CAP_NET_RAW: + return "net_raw" + case CAP_IPC_LOCK: + return "ipc_lock" + case CAP_IPC_OWNER: + return "ipc_owner" + case CAP_SYS_MODULE: + return "sys_module" + case CAP_SYS_RAWIO: + return "sys_rawio" + case CAP_SYS_CHROOT: + return "sys_chroot" + case CAP_SYS_PTRACE: + return "sys_ptrace" + case CAP_SYS_PACCT: + return "sys_pacct" + case CAP_SYS_ADMIN: + return "sys_admin" + case CAP_SYS_BOOT: + return "sys_boot" + case CAP_SYS_NICE: + return "sys_nice" + case CAP_SYS_RESOURCE: + return "sys_resource" + case CAP_SYS_TIME: + return "sys_time" + case CAP_SYS_TTY_CONFIG: + return "sys_tty_config" + case CAP_MKNOD: + return "mknod" + case CAP_LEASE: + return "lease" + case CAP_AUDIT_WRITE: + return "audit_write" + case CAP_AUDIT_CONTROL: + return "audit_control" + case CAP_SETFCAP: + return "setfcap" + case CAP_MAC_OVERRIDE: + return "mac_override" + case CAP_MAC_ADMIN: + return "mac_admin" + case CAP_SYSLOG: + return "syslog" + case CAP_WAKE_ALARM: + return "wake_alarm" + case CAP_BLOCK_SUSPEND: + return "block_suspend" + case CAP_AUDIT_READ: + return "audit_read" + } + return "unknown" +} + +// List returns list of all supported capabilities +func List() []Cap { + return []Cap{ + CAP_CHOWN, + CAP_DAC_OVERRIDE, + CAP_DAC_READ_SEARCH, + CAP_FOWNER, + CAP_FSETID, + CAP_KILL, + CAP_SETGID, + CAP_SETUID, + CAP_SETPCAP, + CAP_LINUX_IMMUTABLE, + CAP_NET_BIND_SERVICE, + CAP_NET_BROADCAST, + CAP_NET_ADMIN, + CAP_NET_RAW, + CAP_IPC_LOCK, + CAP_IPC_OWNER, + CAP_SYS_MODULE, + CAP_SYS_RAWIO, + CAP_SYS_CHROOT, + CAP_SYS_PTRACE, + CAP_SYS_PACCT, + CAP_SYS_ADMIN, + CAP_SYS_BOOT, + CAP_SYS_NICE, + CAP_SYS_RESOURCE, + CAP_SYS_TIME, + CAP_SYS_TTY_CONFIG, + CAP_MKNOD, + CAP_LEASE, + CAP_AUDIT_WRITE, + CAP_AUDIT_CONTROL, + CAP_SETFCAP, + CAP_MAC_OVERRIDE, + CAP_MAC_ADMIN, + CAP_SYSLOG, + CAP_WAKE_ALARM, + CAP_BLOCK_SUSPEND, + CAP_AUDIT_READ, + } +} diff --git a/vendor/github.com/syndtr/gocapability/capability/syscall_linux.go b/vendor/github.com/syndtr/gocapability/capability/syscall_linux.go new file mode 100644 index 000000000..eb7170083 --- /dev/null +++ b/vendor/github.com/syndtr/gocapability/capability/syscall_linux.go @@ -0,0 +1,154 @@ +// Copyright (c) 2013, Suryandaru Triandana +// All rights reserved. +// +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +package capability + +import ( + "syscall" + "unsafe" +) + +type capHeader struct { + version uint32 + pid int +} + +type capData struct { + effective uint32 + permitted uint32 + inheritable uint32 +} + +func capget(hdr *capHeader, data *capData) (err error) { + _, _, e1 := syscall.Syscall(syscall.SYS_CAPGET, uintptr(unsafe.Pointer(hdr)), uintptr(unsafe.Pointer(data)), 0) + if e1 != 0 { + err = e1 + } + return +} + +func capset(hdr *capHeader, data *capData) (err error) { + _, _, e1 := syscall.Syscall(syscall.SYS_CAPSET, uintptr(unsafe.Pointer(hdr)), uintptr(unsafe.Pointer(data)), 0) + if e1 != 0 { + err = e1 + } + return +} + +// not yet in syscall +const ( + pr_CAP_AMBIENT = 47 + pr_CAP_AMBIENT_IS_SET = uintptr(1) + pr_CAP_AMBIENT_RAISE = uintptr(2) + pr_CAP_AMBIENT_LOWER = uintptr(3) + pr_CAP_AMBIENT_CLEAR_ALL = uintptr(4) +) + +func prctl(option int, arg2, arg3, arg4, arg5 uintptr) (err error) { + _, _, e1 := syscall.Syscall6(syscall.SYS_PRCTL, uintptr(option), arg2, arg3, arg4, arg5, 0) + if e1 != 0 { + err = e1 + } + return +} + +const ( + vfsXattrName = "security.capability" + + vfsCapVerMask = 0xff000000 + vfsCapVer1 = 0x01000000 + vfsCapVer2 = 0x02000000 + + vfsCapFlagMask = ^vfsCapVerMask + vfsCapFlageffective = 0x000001 + + vfscapDataSizeV1 = 4 * (1 + 2*1) + vfscapDataSizeV2 = 4 * (1 + 2*2) +) + +type vfscapData struct { + magic uint32 + data [2]struct { + permitted uint32 + inheritable uint32 + } + effective [2]uint32 + version int8 +} + +var ( + _vfsXattrName *byte +) + +func init() { + _vfsXattrName, _ = syscall.BytePtrFromString(vfsXattrName) +} + +func getVfsCap(path string, dest *vfscapData) (err error) { + var _p0 *byte + _p0, err = syscall.BytePtrFromString(path) + if err != nil { + return + } + r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_vfsXattrName)), uintptr(unsafe.Pointer(dest)), vfscapDataSizeV2, 0, 0) + if e1 != 0 { + if e1 == syscall.ENODATA { + dest.version = 2 + return + } + err = e1 + } + switch dest.magic & vfsCapVerMask { + case vfsCapVer1: + dest.version = 1 + if r0 != vfscapDataSizeV1 { + return syscall.EINVAL + } + dest.data[1].permitted = 0 + dest.data[1].inheritable = 0 + case vfsCapVer2: + dest.version = 2 + if r0 != vfscapDataSizeV2 { + return syscall.EINVAL + } + default: + return syscall.EINVAL + } + if dest.magic&vfsCapFlageffective != 0 { + dest.effective[0] = dest.data[0].permitted | dest.data[0].inheritable + dest.effective[1] = dest.data[1].permitted | dest.data[1].inheritable + } else { + dest.effective[0] = 0 + dest.effective[1] = 0 + } + return +} + +func setVfsCap(path string, data *vfscapData) (err error) { + var _p0 *byte + _p0, err = syscall.BytePtrFromString(path) + if err != nil { + return + } + var size uintptr + if data.version == 1 { + data.magic = vfsCapVer1 + size = vfscapDataSizeV1 + } else if data.version == 2 { + data.magic = vfsCapVer2 + if data.effective[0] != 0 || data.effective[1] != 0 { + data.magic |= vfsCapFlageffective + } + size = vfscapDataSizeV2 + } else { + return syscall.EINVAL + } + _, _, e1 := syscall.Syscall6(syscall.SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_vfsXattrName)), uintptr(unsafe.Pointer(data)), size, 0, 0) + if e1 != 0 { + err = e1 + } + return +} diff --git a/vendor/vendor.json b/vendor/vendor.json index 8cfd5a080..d1bb54bf6 100644 --- a/vendor/vendor.json +++ b/vendor/vendor.json @@ -355,6 +355,12 @@ "revision": "2aa2c176b9dab406a6970f6a55f513e8a8c8b18f", "revisionTime": "2017-08-14T20:04:35Z" }, + { + "checksumSHA1": "ttq59lEvvhcPqd+hDXxclaIXQQs=", + "path": "github.com/docker/docker/daemon/caps", + "revision": "53a58da551e961b3710bbbdfabbc162c3f5f30f6", + "revisionTime": "2018-01-31T23:13:00Z" + }, { "checksumSHA1": "Oq8DJr2mCWo5McNwdMFVwBsieXQ=", "path": "github.com/docker/go-events", @@ -710,6 +716,12 @@ "revision": "2b8ed96d2a422bf205adcdfa05272dc12c81613b", "revisionTime": "2017-11-08T19:22:26Z" }, + { + "checksumSHA1": "PgEklGW56c5RLHqQhORxt6jS3fY=", + "path": "github.com/syndtr/gocapability/capability", + "revision": "db04d3cc01c8b54962a58ec7e491717d06cfcc16", + "revisionTime": "2017-07-04T07:02:18Z" + }, { "checksumSHA1": "AHk1Y+L/rkf1jKAmqttDefEWeJw=", "path": "github.com/tchap/go-patricia/patricia",