From 17fe0104a4885a9d66909860c83bfc604bc048f0 Mon Sep 17 00:00:00 2001 From: Julio Montes Date: Fri, 24 Jul 2020 13:21:36 -0500 Subject: [PATCH] vendor: update govmm bring fixes for the 9p filesystem shortlog: abca6f3 Add multidevs option to fsdev Signed-off-by: Julio Montes --- src/runtime/go.mod | 5 +- src/runtime/go.sum | 6 +- .../github.com/hashicorp/yamux/.gitignore | 23 - .../vendor/github.com/hashicorp/yamux/LICENSE | 362 ---------- .../github.com/hashicorp/yamux/README.md | 86 --- .../vendor/github.com/hashicorp/yamux/addr.go | 60 -- .../github.com/hashicorp/yamux/const.go | 157 ----- .../vendor/github.com/hashicorp/yamux/go.mod | 1 - .../vendor/github.com/hashicorp/yamux/mux.go | 98 --- .../github.com/hashicorp/yamux/session.go | 653 ------------------ .../vendor/github.com/hashicorp/yamux/spec.md | 140 ---- .../github.com/hashicorp/yamux/stream.go | 470 ------------- .../vendor/github.com/hashicorp/yamux/util.go | 43 -- .../github.com/intel/govmm/qemu/qemu.go | 25 + src/runtime/vendor/modules.txt | 7 +- 15 files changed, 29 insertions(+), 2107 deletions(-) delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/.gitignore delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/LICENSE delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/README.md delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/addr.go delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/const.go delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/go.mod delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/mux.go delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/session.go delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/spec.md delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/stream.go delete mode 100644 src/runtime/vendor/github.com/hashicorp/yamux/util.go diff --git a/src/runtime/go.mod b/src/runtime/go.mod index bc0d5733db..8a84ef9916 100644 --- a/src/runtime/go.mod +++ b/src/runtime/go.mod @@ -23,7 +23,6 @@ require ( github.com/docker/distribution v2.7.1+incompatible // indirect github.com/docker/docker v1.13.1 // indirect github.com/docker/go-events v0.0.0-20190806004212-e31b211e4f1c // indirect - github.com/docker/go-units v0.3.3 github.com/go-ini/ini v1.28.2 github.com/go-openapi/errors v0.18.0 github.com/go-openapi/runtime v0.18.0 @@ -33,10 +32,8 @@ require ( github.com/gogo/googleapis v1.4.0 // indirect github.com/gogo/protobuf v1.3.1 github.com/hashicorp/go-multierror v1.0.0 - github.com/hashicorp/yamux v0.0.0-20190923154419-df201c70410d - github.com/intel/govmm v0.0.0-20200602145448-7cc469641b7b + github.com/intel/govmm v0.0.0-20200724170648-af9e34b91ae9 github.com/mdlayher/vsock v0.0.0-20191108225356-d9c65923cb8f - github.com/mitchellh/mapstructure v1.1.2 github.com/opencontainers/image-spec v1.0.1 // indirect github.com/opencontainers/runc v1.0.0-rc9.0.20200102164712-2b52db75279c github.com/opencontainers/runtime-spec v1.0.2-0.20190408193819-a1b50f621a48 diff --git a/src/runtime/go.sum b/src/runtime/go.sum index d9e7a3fdde..3ff36b9adf 100644 --- a/src/runtime/go.sum +++ b/src/runtime/go.sum @@ -161,13 +161,11 @@ github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/U github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4= github.com/hashicorp/go-multierror v1.0.0 h1:iVjPR7a6H0tWELX5NxNe7bYopibicUzc7uPribsnS6o= github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk= -github.com/hashicorp/yamux v0.0.0-20190923154419-df201c70410d h1:W+SIwDdl3+jXWeidYySAgzytE3piq6GumXeBjFBG67c= -github.com/hashicorp/yamux v0.0.0-20190923154419-df201c70410d/go.mod h1:+NfK9FKeTrX5uv1uIXGdwYDTeHna2qgaIlx54MXqjAM= github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI= github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU= github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8= -github.com/intel/govmm v0.0.0-20200602145448-7cc469641b7b h1:QqUb1HVk0Nb9zyzvIkMmhI7DP5gzyWPx/6md21M52U0= -github.com/intel/govmm v0.0.0-20200602145448-7cc469641b7b/go.mod h1:QKGWoQtjvkvFtzP6ybiM3lxUHqf83Sv3oLqyELUKH4g= +github.com/intel/govmm v0.0.0-20200724170648-af9e34b91ae9 h1:GSRnVLRNweZV3f8Vo3vtMlPsuzvpj57Gj7Y7TkGVO6U= +github.com/intel/govmm v0.0.0-20200724170648-af9e34b91ae9/go.mod h1:QKGWoQtjvkvFtzP6ybiM3lxUHqf83Sv3oLqyELUKH4g= github.com/j-keck/arping v0.0.0-20160618110441-2cf9dc699c56/go.mod h1:ymszkNOg6tORTn+6F6j+Jc8TOr5osrynvN6ivFWZ2GA= github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU= github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4= diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/.gitignore b/src/runtime/vendor/github.com/hashicorp/yamux/.gitignore deleted file mode 100644 index 836562412f..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/.gitignore +++ /dev/null @@ -1,23 +0,0 @@ -# Compiled Object files, Static and Dynamic libs (Shared Objects) -*.o -*.a -*.so - -# Folders -_obj -_test - -# Architecture specific extensions/prefixes -*.[568vq] -[568vq].out - -*.cgo1.go -*.cgo2.c -_cgo_defun.c -_cgo_gotypes.go -_cgo_export.* - -_testmain.go - -*.exe -*.test diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/LICENSE b/src/runtime/vendor/github.com/hashicorp/yamux/LICENSE deleted file mode 100644 index f0e5c79e18..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/LICENSE +++ /dev/null @@ -1,362 +0,0 @@ -Mozilla Public License, version 2.0 - -1. Definitions - -1.1. "Contributor" - - means each individual or legal entity that creates, contributes to the - creation of, or owns Covered Software. - -1.2. "Contributor Version" - - means the combination of the Contributions of others (if any) used by a - Contributor and that particular Contributor's Contribution. - -1.3. "Contribution" - - means Covered Software of a particular Contributor. - -1.4. "Covered Software" - - means Source Code Form to which the initial Contributor has attached the - notice in Exhibit A, the Executable Form of such Source Code Form, and - Modifications of such Source Code Form, in each case including portions - thereof. - -1.5. "Incompatible With Secondary Licenses" - means - - a. that the initial Contributor has attached the notice described in - Exhibit B to the Covered Software; or - - b. that the Covered Software was made available under the terms of - version 1.1 or earlier of the License, but not also under the terms of - a Secondary License. - -1.6. "Executable Form" - - means any form of the work other than Source Code Form. - -1.7. "Larger Work" - - means a work that combines Covered Software with other material, in a - separate file or files, that is not Covered Software. - -1.8. "License" - - means this document. - -1.9. "Licensable" - - means having the right to grant, to the maximum extent possible, whether - at the time of the initial grant or subsequently, any and all of the - rights conveyed by this License. - -1.10. "Modifications" - - means any of the following: - - a. any file in Source Code Form that results from an addition to, - deletion from, or modification of the contents of Covered Software; or - - b. any new file in Source Code Form that contains any Covered Software. - -1.11. "Patent Claims" of a Contributor - - means any patent claim(s), including without limitation, method, - process, and apparatus claims, in any patent Licensable by such - Contributor that would be infringed, but for the grant of the License, - by the making, using, selling, offering for sale, having made, import, - or transfer of either its Contributions or its Contributor Version. - -1.12. "Secondary License" - - means either the GNU General Public License, Version 2.0, the GNU Lesser - General Public License, Version 2.1, the GNU Affero General Public - License, Version 3.0, or any later versions of those licenses. - -1.13. "Source Code Form" - - means the form of the work preferred for making modifications. - -1.14. "You" (or "Your") - - means an individual or a legal entity exercising rights under this - License. For legal entities, "You" includes any entity that controls, is - controlled by, or is under common control with You. For purposes of this - definition, "control" means (a) the power, direct or indirect, to cause - the direction or management of such entity, whether by contract or - otherwise, or (b) ownership of more than fifty percent (50%) of the - outstanding shares or beneficial ownership of such entity. - - -2. License Grants and Conditions - -2.1. Grants - - Each Contributor hereby grants You a world-wide, royalty-free, - non-exclusive license: - - a. under intellectual property rights (other than patent or trademark) - Licensable by such Contributor to use, reproduce, make available, - modify, display, perform, distribute, and otherwise exploit its - Contributions, either on an unmodified basis, with Modifications, or - as part of a Larger Work; and - - b. under Patent Claims of such Contributor to make, use, sell, offer for - sale, have made, import, and otherwise transfer either its - Contributions or its Contributor Version. - -2.2. Effective Date - - The licenses granted in Section 2.1 with respect to any Contribution - become effective for each Contribution on the date the Contributor first - distributes such Contribution. - -2.3. Limitations on Grant Scope - - The licenses granted in this Section 2 are the only rights granted under - this License. No additional rights or licenses will be implied from the - distribution or licensing of Covered Software under this License. - Notwithstanding Section 2.1(b) above, no patent license is granted by a - Contributor: - - a. for any code that a Contributor has removed from Covered Software; or - - b. for infringements caused by: (i) Your and any other third party's - modifications of Covered Software, or (ii) the combination of its - Contributions with other software (except as part of its Contributor - Version); or - - c. under Patent Claims infringed by Covered Software in the absence of - its Contributions. - - This License does not grant any rights in the trademarks, service marks, - or logos of any Contributor (except as may be necessary to comply with - the notice requirements in Section 3.4). - -2.4. Subsequent Licenses - - No Contributor makes additional grants as a result of Your choice to - distribute the Covered Software under a subsequent version of this - License (see Section 10.2) or under the terms of a Secondary License (if - permitted under the terms of Section 3.3). - -2.5. Representation - - Each Contributor represents that the Contributor believes its - Contributions are its original creation(s) or it has sufficient rights to - grant the rights to its Contributions conveyed by this License. - -2.6. Fair Use - - This License is not intended to limit any rights You have under - applicable copyright doctrines of fair use, fair dealing, or other - equivalents. - -2.7. Conditions - - Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in - Section 2.1. - - -3. Responsibilities - -3.1. Distribution of Source Form - - All distribution of Covered Software in Source Code Form, including any - Modifications that You create or to which You contribute, must be under - the terms of this License. You must inform recipients that the Source - Code Form of the Covered Software is governed by the terms of this - License, and how they can obtain a copy of this License. You may not - attempt to alter or restrict the recipients' rights in the Source Code - Form. - -3.2. Distribution of Executable Form - - If You distribute Covered Software in Executable Form then: - - a. such Covered Software must also be made available in Source Code Form, - as described in Section 3.1, and You must inform recipients of the - Executable Form how they can obtain a copy of such Source Code Form by - reasonable means in a timely manner, at a charge no more than the cost - of distribution to the recipient; and - - b. You may distribute such Executable Form under the terms of this - License, or sublicense it under different terms, provided that the - license for the Executable Form does not attempt to limit or alter the - recipients' rights in the Source Code Form under this License. - -3.3. Distribution of a Larger Work - - You may create and distribute a Larger Work under terms of Your choice, - provided that You also comply with the requirements of this License for - the Covered Software. If the Larger Work is a combination of Covered - Software with a work governed by one or more Secondary Licenses, and the - Covered Software is not Incompatible With Secondary Licenses, this - License permits You to additionally distribute such Covered Software - under the terms of such Secondary License(s), so that the recipient of - the Larger Work may, at their option, further distribute the Covered - Software under the terms of either this License or such Secondary - License(s). - -3.4. Notices - - You may not remove or alter the substance of any license notices - (including copyright notices, patent notices, disclaimers of warranty, or - limitations of liability) contained within the Source Code Form of the - Covered Software, except that You may alter any license notices to the - extent required to remedy known factual inaccuracies. - -3.5. Application of Additional Terms - - You may choose to offer, and to charge a fee for, warranty, support, - indemnity or liability obligations to one or more recipients of Covered - Software. However, You may do so only on Your own behalf, and not on - behalf of any Contributor. You must make it absolutely clear that any - such warranty, support, indemnity, or liability obligation is offered by - You alone, and You hereby agree to indemnify every Contributor for any - liability incurred by such Contributor as a result of warranty, support, - indemnity or liability terms You offer. You may include additional - disclaimers of warranty and limitations of liability specific to any - jurisdiction. - -4. Inability to Comply Due to Statute or Regulation - - If it is impossible for You to comply with any of the terms of this License - with respect to some or all of the Covered Software due to statute, - judicial order, or regulation then You must: (a) comply with the terms of - this License to the maximum extent possible; and (b) describe the - limitations and the code they affect. Such description must be placed in a - text file included with all distributions of the Covered Software under - this License. Except to the extent prohibited by statute or regulation, - such description must be sufficiently detailed for a recipient of ordinary - skill to be able to understand it. - -5. Termination - -5.1. The rights granted under this License will terminate automatically if You - fail to comply with any of its terms. However, if You become compliant, - then the rights granted under this License from a particular Contributor - are reinstated (a) provisionally, unless and until such Contributor - explicitly and finally terminates Your grants, and (b) on an ongoing - basis, if such Contributor fails to notify You of the non-compliance by - some reasonable means prior to 60 days after You have come back into - compliance. Moreover, Your grants from a particular Contributor are - reinstated on an ongoing basis if such Contributor notifies You of the - non-compliance by some reasonable means, this is the first time You have - received notice of non-compliance with this License from such - Contributor, and You become compliant prior to 30 days after Your receipt - of the notice. - -5.2. If You initiate litigation against any entity by asserting a patent - infringement claim (excluding declaratory judgment actions, - counter-claims, and cross-claims) alleging that a Contributor Version - directly or indirectly infringes any patent, then the rights granted to - You by any and all Contributors for the Covered Software under Section - 2.1 of this License shall terminate. - -5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user - license agreements (excluding distributors and resellers) which have been - validly granted by You or Your distributors under this License prior to - termination shall survive termination. - -6. Disclaimer of Warranty - - Covered Software is provided under this License on an "as is" basis, - without warranty of any kind, either expressed, implied, or statutory, - including, without limitation, warranties that the Covered Software is free - of defects, merchantable, fit for a particular purpose or non-infringing. - The entire risk as to the quality and performance of the Covered Software - is with You. Should any Covered Software prove defective in any respect, - You (not any Contributor) assume the cost of any necessary servicing, - repair, or correction. This disclaimer of warranty constitutes an essential - part of this License. No use of any Covered Software is authorized under - this License except under this disclaimer. - -7. Limitation of Liability - - Under no circumstances and under no legal theory, whether tort (including - negligence), contract, or otherwise, shall any Contributor, or anyone who - distributes Covered Software as permitted above, be liable to You for any - direct, indirect, special, incidental, or consequential damages of any - character including, without limitation, damages for lost profits, loss of - goodwill, work stoppage, computer failure or malfunction, or any and all - other commercial damages or losses, even if such party shall have been - informed of the possibility of such damages. This limitation of liability - shall not apply to liability for death or personal injury resulting from - such party's negligence to the extent applicable law prohibits such - limitation. Some jurisdictions do not allow the exclusion or limitation of - incidental or consequential damages, so this exclusion and limitation may - not apply to You. - -8. Litigation - - Any litigation relating to this License may be brought only in the courts - of a jurisdiction where the defendant maintains its principal place of - business and such litigation shall be governed by laws of that - jurisdiction, without reference to its conflict-of-law provisions. Nothing - in this Section shall prevent a party's ability to bring cross-claims or - counter-claims. - -9. Miscellaneous - - This License represents the complete agreement concerning the subject - matter hereof. If any provision of this License is held to be - unenforceable, such provision shall be reformed only to the extent - necessary to make it enforceable. Any law or regulation which provides that - the language of a contract shall be construed against the drafter shall not - be used to construe this License against a Contributor. - - -10. Versions of the License - -10.1. New Versions - - Mozilla Foundation is the license steward. Except as provided in Section - 10.3, no one other than the license steward has the right to modify or - publish new versions of this License. Each version will be given a - distinguishing version number. - -10.2. Effect of New Versions - - You may distribute the Covered Software under the terms of the version - of the License under which You originally received the Covered Software, - or under the terms of any subsequent version published by the license - steward. - -10.3. Modified Versions - - If you create software not governed by this License, and you want to - create a new license for such software, you may create and use a - modified version of this License if you rename the license and remove - any references to the name of the license steward (except to note that - such modified license differs from this License). - -10.4. Distributing Source Code Form that is Incompatible With Secondary - Licenses If You choose to distribute Source Code Form that is - Incompatible With Secondary Licenses under the terms of this version of - the License, the notice described in Exhibit B of this License must be - attached. - -Exhibit A - Source Code Form License Notice - - This Source Code Form is subject to the - terms of the Mozilla Public License, v. - 2.0. If a copy of the MPL was not - distributed with this file, You can - obtain one at - http://mozilla.org/MPL/2.0/. - -If it is not possible or desirable to put the notice in a particular file, -then You may include the notice in a location (such as a LICENSE file in a -relevant directory) where a recipient would be likely to look for such a -notice. - -You may add additional accurate notices of copyright ownership. - -Exhibit B - "Incompatible With Secondary Licenses" Notice - - This Source Code Form is "Incompatible - With Secondary Licenses", as defined by - the Mozilla Public License, v. 2.0. \ No newline at end of file diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/README.md b/src/runtime/vendor/github.com/hashicorp/yamux/README.md deleted file mode 100644 index d4db7fc99b..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/README.md +++ /dev/null @@ -1,86 +0,0 @@ -# Yamux - -Yamux (Yet another Multiplexer) is a multiplexing library for Golang. -It relies on an underlying connection to provide reliability -and ordering, such as TCP or Unix domain sockets, and provides -stream-oriented multiplexing. It is inspired by SPDY but is not -interoperable with it. - -Yamux features include: - -* Bi-directional streams - * Streams can be opened by either client or server - * Useful for NAT traversal - * Server-side push support -* Flow control - * Avoid starvation - * Back-pressure to prevent overwhelming a receiver -* Keep Alives - * Enables persistent connections over a load balancer -* Efficient - * Enables thousands of logical streams with low overhead - -## Documentation - -For complete documentation, see the associated [Godoc](http://godoc.org/github.com/hashicorp/yamux). - -## Specification - -The full specification for Yamux is provided in the `spec.md` file. -It can be used as a guide to implementors of interoperable libraries. - -## Usage - -Using Yamux is remarkably simple: - -```go - -func client() { - // Get a TCP connection - conn, err := net.Dial(...) - if err != nil { - panic(err) - } - - // Setup client side of yamux - session, err := yamux.Client(conn, nil) - if err != nil { - panic(err) - } - - // Open a new stream - stream, err := session.Open() - if err != nil { - panic(err) - } - - // Stream implements net.Conn - stream.Write([]byte("ping")) -} - -func server() { - // Accept a TCP connection - conn, err := listener.Accept() - if err != nil { - panic(err) - } - - // Setup server side of yamux - session, err := yamux.Server(conn, nil) - if err != nil { - panic(err) - } - - // Accept a stream - stream, err := session.Accept() - if err != nil { - panic(err) - } - - // Listen for a message - buf := make([]byte, 4) - stream.Read(buf) -} - -``` - diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/addr.go b/src/runtime/vendor/github.com/hashicorp/yamux/addr.go deleted file mode 100644 index f6a00199cd..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/addr.go +++ /dev/null @@ -1,60 +0,0 @@ -package yamux - -import ( - "fmt" - "net" -) - -// hasAddr is used to get the address from the underlying connection -type hasAddr interface { - LocalAddr() net.Addr - RemoteAddr() net.Addr -} - -// yamuxAddr is used when we cannot get the underlying address -type yamuxAddr struct { - Addr string -} - -func (*yamuxAddr) Network() string { - return "yamux" -} - -func (y *yamuxAddr) String() string { - return fmt.Sprintf("yamux:%s", y.Addr) -} - -// Addr is used to get the address of the listener. -func (s *Session) Addr() net.Addr { - return s.LocalAddr() -} - -// LocalAddr is used to get the local address of the -// underlying connection. -func (s *Session) LocalAddr() net.Addr { - addr, ok := s.conn.(hasAddr) - if !ok { - return &yamuxAddr{"local"} - } - return addr.LocalAddr() -} - -// RemoteAddr is used to get the address of remote end -// of the underlying connection -func (s *Session) RemoteAddr() net.Addr { - addr, ok := s.conn.(hasAddr) - if !ok { - return &yamuxAddr{"remote"} - } - return addr.RemoteAddr() -} - -// LocalAddr returns the local address -func (s *Stream) LocalAddr() net.Addr { - return s.session.LocalAddr() -} - -// RemoteAddr returns the remote address -func (s *Stream) RemoteAddr() net.Addr { - return s.session.RemoteAddr() -} diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/const.go b/src/runtime/vendor/github.com/hashicorp/yamux/const.go deleted file mode 100644 index 4f52938287..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/const.go +++ /dev/null @@ -1,157 +0,0 @@ -package yamux - -import ( - "encoding/binary" - "fmt" -) - -var ( - // ErrInvalidVersion means we received a frame with an - // invalid version - ErrInvalidVersion = fmt.Errorf("invalid protocol version") - - // ErrInvalidMsgType means we received a frame with an - // invalid message type - ErrInvalidMsgType = fmt.Errorf("invalid msg type") - - // ErrSessionShutdown is used if there is a shutdown during - // an operation - ErrSessionShutdown = fmt.Errorf("session shutdown") - - // ErrStreamsExhausted is returned if we have no more - // stream ids to issue - ErrStreamsExhausted = fmt.Errorf("streams exhausted") - - // ErrDuplicateStream is used if a duplicate stream is - // opened inbound - ErrDuplicateStream = fmt.Errorf("duplicate stream initiated") - - // ErrReceiveWindowExceeded indicates the window was exceeded - ErrRecvWindowExceeded = fmt.Errorf("recv window exceeded") - - // ErrTimeout is used when we reach an IO deadline - ErrTimeout = fmt.Errorf("i/o deadline reached") - - // ErrStreamClosed is returned when using a closed stream - ErrStreamClosed = fmt.Errorf("stream closed") - - // ErrUnexpectedFlag is set when we get an unexpected flag - ErrUnexpectedFlag = fmt.Errorf("unexpected flag") - - // ErrRemoteGoAway is used when we get a go away from the other side - ErrRemoteGoAway = fmt.Errorf("remote end is not accepting connections") - - // ErrConnectionReset is sent if a stream is reset. This can happen - // if the backlog is exceeded, or if there was a remote GoAway. - ErrConnectionReset = fmt.Errorf("connection reset") - - // ErrConnectionWriteTimeout indicates that we hit the "safety valve" - // timeout writing to the underlying stream connection. - ErrConnectionWriteTimeout = fmt.Errorf("connection write timeout") - - // ErrKeepAliveTimeout is sent if a missed keepalive caused the stream close - ErrKeepAliveTimeout = fmt.Errorf("keepalive timeout") -) - -const ( - // protoVersion is the only version we support - protoVersion uint8 = 0 -) - -const ( - // Data is used for data frames. They are followed - // by length bytes worth of payload. - typeData uint8 = iota - - // WindowUpdate is used to change the window of - // a given stream. The length indicates the delta - // update to the window. - typeWindowUpdate - - // Ping is sent as a keep-alive or to measure - // the RTT. The StreamID and Length value are echoed - // back in the response. - typePing - - // GoAway is sent to terminate a session. The StreamID - // should be 0 and the length is an error code. - typeGoAway -) - -const ( - // SYN is sent to signal a new stream. May - // be sent with a data payload - flagSYN uint16 = 1 << iota - - // ACK is sent to acknowledge a new stream. May - // be sent with a data payload - flagACK - - // FIN is sent to half-close the given stream. - // May be sent with a data payload. - flagFIN - - // RST is used to hard close a given stream. - flagRST -) - -const ( - // initialStreamWindow is the initial stream window size - initialStreamWindow uint32 = 256 * 1024 -) - -const ( - // goAwayNormal is sent on a normal termination - goAwayNormal uint32 = iota - - // goAwayProtoErr sent on a protocol error - goAwayProtoErr - - // goAwayInternalErr sent on an internal error - goAwayInternalErr -) - -const ( - sizeOfVersion = 1 - sizeOfType = 1 - sizeOfFlags = 2 - sizeOfStreamID = 4 - sizeOfLength = 4 - headerSize = sizeOfVersion + sizeOfType + sizeOfFlags + - sizeOfStreamID + sizeOfLength -) - -type header []byte - -func (h header) Version() uint8 { - return h[0] -} - -func (h header) MsgType() uint8 { - return h[1] -} - -func (h header) Flags() uint16 { - return binary.BigEndian.Uint16(h[2:4]) -} - -func (h header) StreamID() uint32 { - return binary.BigEndian.Uint32(h[4:8]) -} - -func (h header) Length() uint32 { - return binary.BigEndian.Uint32(h[8:12]) -} - -func (h header) String() string { - return fmt.Sprintf("Vsn:%d Type:%d Flags:%d StreamID:%d Length:%d", - h.Version(), h.MsgType(), h.Flags(), h.StreamID(), h.Length()) -} - -func (h header) encode(msgType uint8, flags uint16, streamID uint32, length uint32) { - h[0] = protoVersion - h[1] = msgType - binary.BigEndian.PutUint16(h[2:4], flags) - binary.BigEndian.PutUint32(h[4:8], streamID) - binary.BigEndian.PutUint32(h[8:12], length) -} diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/go.mod b/src/runtime/vendor/github.com/hashicorp/yamux/go.mod deleted file mode 100644 index 672a0e5811..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/go.mod +++ /dev/null @@ -1 +0,0 @@ -module github.com/hashicorp/yamux diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/mux.go b/src/runtime/vendor/github.com/hashicorp/yamux/mux.go deleted file mode 100644 index 18a078c8ad..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/mux.go +++ /dev/null @@ -1,98 +0,0 @@ -package yamux - -import ( - "fmt" - "io" - "log" - "os" - "time" -) - -// Config is used to tune the Yamux session -type Config struct { - // AcceptBacklog is used to limit how many streams may be - // waiting an accept. - AcceptBacklog int - - // EnableKeepalive is used to do a period keep alive - // messages using a ping. - EnableKeepAlive bool - - // KeepAliveInterval is how often to perform the keep alive - KeepAliveInterval time.Duration - - // ConnectionWriteTimeout is meant to be a "safety valve" timeout after - // we which will suspect a problem with the underlying connection and - // close it. This is only applied to writes, where's there's generally - // an expectation that things will move along quickly. - ConnectionWriteTimeout time.Duration - - // MaxStreamWindowSize is used to control the maximum - // window size that we allow for a stream. - MaxStreamWindowSize uint32 - - // LogOutput is used to control the log destination. Either Logger or - // LogOutput can be set, not both. - LogOutput io.Writer - - // Logger is used to pass in the logger to be used. Either Logger or - // LogOutput can be set, not both. - Logger *log.Logger -} - -// DefaultConfig is used to return a default configuration -func DefaultConfig() *Config { - return &Config{ - AcceptBacklog: 256, - EnableKeepAlive: true, - KeepAliveInterval: 30 * time.Second, - ConnectionWriteTimeout: 10 * time.Second, - MaxStreamWindowSize: initialStreamWindow, - LogOutput: os.Stderr, - } -} - -// VerifyConfig is used to verify the sanity of configuration -func VerifyConfig(config *Config) error { - if config.AcceptBacklog <= 0 { - return fmt.Errorf("backlog must be positive") - } - if config.KeepAliveInterval == 0 { - return fmt.Errorf("keep-alive interval must be positive") - } - if config.MaxStreamWindowSize < initialStreamWindow { - return fmt.Errorf("MaxStreamWindowSize must be larger than %d", initialStreamWindow) - } - if config.LogOutput != nil && config.Logger != nil { - return fmt.Errorf("both Logger and LogOutput may not be set, select one") - } else if config.LogOutput == nil && config.Logger == nil { - return fmt.Errorf("one of Logger or LogOutput must be set, select one") - } - return nil -} - -// Server is used to initialize a new server-side connection. -// There must be at most one server-side connection. If a nil config is -// provided, the DefaultConfiguration will be used. -func Server(conn io.ReadWriteCloser, config *Config) (*Session, error) { - if config == nil { - config = DefaultConfig() - } - if err := VerifyConfig(config); err != nil { - return nil, err - } - return newSession(config, conn, false), nil -} - -// Client is used to initialize a new client-side connection. -// There must be at most one client-side connection. -func Client(conn io.ReadWriteCloser, config *Config) (*Session, error) { - if config == nil { - config = DefaultConfig() - } - - if err := VerifyConfig(config); err != nil { - return nil, err - } - return newSession(config, conn, true), nil -} diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/session.go b/src/runtime/vendor/github.com/hashicorp/yamux/session.go deleted file mode 100644 index a80ddec35e..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/session.go +++ /dev/null @@ -1,653 +0,0 @@ -package yamux - -import ( - "bufio" - "fmt" - "io" - "io/ioutil" - "log" - "math" - "net" - "strings" - "sync" - "sync/atomic" - "time" -) - -// Session is used to wrap a reliable ordered connection and to -// multiplex it into multiple streams. -type Session struct { - // remoteGoAway indicates the remote side does - // not want futher connections. Must be first for alignment. - remoteGoAway int32 - - // localGoAway indicates that we should stop - // accepting futher connections. Must be first for alignment. - localGoAway int32 - - // nextStreamID is the next stream we should - // send. This depends if we are a client/server. - nextStreamID uint32 - - // config holds our configuration - config *Config - - // logger is used for our logs - logger *log.Logger - - // conn is the underlying connection - conn io.ReadWriteCloser - - // bufRead is a buffered reader - bufRead *bufio.Reader - - // pings is used to track inflight pings - pings map[uint32]chan struct{} - pingID uint32 - pingLock sync.Mutex - - // streams maps a stream id to a stream, and inflight has an entry - // for any outgoing stream that has not yet been established. Both are - // protected by streamLock. - streams map[uint32]*Stream - inflight map[uint32]struct{} - streamLock sync.Mutex - - // synCh acts like a semaphore. It is sized to the AcceptBacklog which - // is assumed to be symmetric between the client and server. This allows - // the client to avoid exceeding the backlog and instead blocks the open. - synCh chan struct{} - - // acceptCh is used to pass ready streams to the client - acceptCh chan *Stream - - // sendCh is used to mark a stream as ready to send, - // or to send a header out directly. - sendCh chan sendReady - - // recvDoneCh is closed when recv() exits to avoid a race - // between stream registration and stream shutdown - recvDoneCh chan struct{} - - // shutdown is used to safely close a session - shutdown bool - shutdownErr error - shutdownCh chan struct{} - shutdownLock sync.Mutex -} - -// sendReady is used to either mark a stream as ready -// or to directly send a header -type sendReady struct { - Hdr []byte - Body io.Reader - Err chan error -} - -// newSession is used to construct a new session -func newSession(config *Config, conn io.ReadWriteCloser, client bool) *Session { - logger := config.Logger - if logger == nil { - logger = log.New(config.LogOutput, "", log.LstdFlags) - } - - s := &Session{ - config: config, - logger: logger, - conn: conn, - bufRead: bufio.NewReader(conn), - pings: make(map[uint32]chan struct{}), - streams: make(map[uint32]*Stream), - inflight: make(map[uint32]struct{}), - synCh: make(chan struct{}, config.AcceptBacklog), - acceptCh: make(chan *Stream, config.AcceptBacklog), - sendCh: make(chan sendReady, 64), - recvDoneCh: make(chan struct{}), - shutdownCh: make(chan struct{}), - } - if client { - s.nextStreamID = 1 - } else { - s.nextStreamID = 2 - } - go s.recv() - go s.send() - if config.EnableKeepAlive { - go s.keepalive() - } - return s -} - -// IsClosed does a safe check to see if we have shutdown -func (s *Session) IsClosed() bool { - select { - case <-s.shutdownCh: - return true - default: - return false - } -} - -// CloseChan returns a read-only channel which is closed as -// soon as the session is closed. -func (s *Session) CloseChan() <-chan struct{} { - return s.shutdownCh -} - -// NumStreams returns the number of currently open streams -func (s *Session) NumStreams() int { - s.streamLock.Lock() - num := len(s.streams) - s.streamLock.Unlock() - return num -} - -// Open is used to create a new stream as a net.Conn -func (s *Session) Open() (net.Conn, error) { - conn, err := s.OpenStream() - if err != nil { - return nil, err - } - return conn, nil -} - -// OpenStream is used to create a new stream -func (s *Session) OpenStream() (*Stream, error) { - if s.IsClosed() { - return nil, ErrSessionShutdown - } - if atomic.LoadInt32(&s.remoteGoAway) == 1 { - return nil, ErrRemoteGoAway - } - - // Block if we have too many inflight SYNs - select { - case s.synCh <- struct{}{}: - case <-s.shutdownCh: - return nil, ErrSessionShutdown - } - -GET_ID: - // Get an ID, and check for stream exhaustion - id := atomic.LoadUint32(&s.nextStreamID) - if id >= math.MaxUint32-1 { - return nil, ErrStreamsExhausted - } - if !atomic.CompareAndSwapUint32(&s.nextStreamID, id, id+2) { - goto GET_ID - } - - // Register the stream - stream := newStream(s, id, streamInit) - s.streamLock.Lock() - s.streams[id] = stream - s.inflight[id] = struct{}{} - s.streamLock.Unlock() - - // Send the window update to create - if err := stream.sendWindowUpdate(); err != nil { - select { - case <-s.synCh: - default: - s.logger.Printf("[ERR] yamux: aborted stream open without inflight syn semaphore") - } - return nil, err - } - return stream, nil -} - -// Accept is used to block until the next available stream -// is ready to be accepted. -func (s *Session) Accept() (net.Conn, error) { - conn, err := s.AcceptStream() - if err != nil { - return nil, err - } - return conn, err -} - -// AcceptStream is used to block until the next available stream -// is ready to be accepted. -func (s *Session) AcceptStream() (*Stream, error) { - select { - case stream := <-s.acceptCh: - if err := stream.sendWindowUpdate(); err != nil { - return nil, err - } - return stream, nil - case <-s.shutdownCh: - return nil, s.shutdownErr - } -} - -// Close is used to close the session and all streams. -// Attempts to send a GoAway before closing the connection. -func (s *Session) Close() error { - s.shutdownLock.Lock() - defer s.shutdownLock.Unlock() - - if s.shutdown { - return nil - } - s.shutdown = true - if s.shutdownErr == nil { - s.shutdownErr = ErrSessionShutdown - } - close(s.shutdownCh) - s.conn.Close() - <-s.recvDoneCh - - s.streamLock.Lock() - defer s.streamLock.Unlock() - for _, stream := range s.streams { - stream.forceClose() - } - return nil -} - -// exitErr is used to handle an error that is causing the -// session to terminate. -func (s *Session) exitErr(err error) { - s.shutdownLock.Lock() - if s.shutdownErr == nil { - s.shutdownErr = err - } - s.shutdownLock.Unlock() - s.Close() -} - -// GoAway can be used to prevent accepting further -// connections. It does not close the underlying conn. -func (s *Session) GoAway() error { - return s.waitForSend(s.goAway(goAwayNormal), nil) -} - -// goAway is used to send a goAway message -func (s *Session) goAway(reason uint32) header { - atomic.SwapInt32(&s.localGoAway, 1) - hdr := header(make([]byte, headerSize)) - hdr.encode(typeGoAway, 0, 0, reason) - return hdr -} - -// Ping is used to measure the RTT response time -func (s *Session) Ping() (time.Duration, error) { - // Get a channel for the ping - ch := make(chan struct{}) - - // Get a new ping id, mark as pending - s.pingLock.Lock() - id := s.pingID - s.pingID++ - s.pings[id] = ch - s.pingLock.Unlock() - - // Send the ping request - hdr := header(make([]byte, headerSize)) - hdr.encode(typePing, flagSYN, 0, id) - if err := s.waitForSend(hdr, nil); err != nil { - return 0, err - } - - // Wait for a response - start := time.Now() - select { - case <-ch: - case <-time.After(s.config.ConnectionWriteTimeout): - s.pingLock.Lock() - delete(s.pings, id) // Ignore it if a response comes later. - s.pingLock.Unlock() - return 0, ErrTimeout - case <-s.shutdownCh: - return 0, ErrSessionShutdown - } - - // Compute the RTT - return time.Now().Sub(start), nil -} - -// keepalive is a long running goroutine that periodically does -// a ping to keep the connection alive. -func (s *Session) keepalive() { - for { - select { - case <-time.After(s.config.KeepAliveInterval): - _, err := s.Ping() - if err != nil { - if err != ErrSessionShutdown { - s.logger.Printf("[ERR] yamux: keepalive failed: %v", err) - s.exitErr(ErrKeepAliveTimeout) - } - return - } - case <-s.shutdownCh: - return - } - } -} - -// waitForSendErr waits to send a header, checking for a potential shutdown -func (s *Session) waitForSend(hdr header, body io.Reader) error { - errCh := make(chan error, 1) - return s.waitForSendErr(hdr, body, errCh) -} - -// waitForSendErr waits to send a header with optional data, checking for a -// potential shutdown. Since there's the expectation that sends can happen -// in a timely manner, we enforce the connection write timeout here. -func (s *Session) waitForSendErr(hdr header, body io.Reader, errCh chan error) error { - t := timerPool.Get() - timer := t.(*time.Timer) - timer.Reset(s.config.ConnectionWriteTimeout) - defer func() { - timer.Stop() - select { - case <-timer.C: - default: - } - timerPool.Put(t) - }() - - ready := sendReady{Hdr: hdr, Body: body, Err: errCh} - select { - case s.sendCh <- ready: - case <-s.shutdownCh: - return ErrSessionShutdown - case <-timer.C: - return ErrConnectionWriteTimeout - } - - select { - case err := <-errCh: - return err - case <-s.shutdownCh: - return ErrSessionShutdown - case <-timer.C: - return ErrConnectionWriteTimeout - } -} - -// sendNoWait does a send without waiting. Since there's the expectation that -// the send happens right here, we enforce the connection write timeout if we -// can't queue the header to be sent. -func (s *Session) sendNoWait(hdr header) error { - t := timerPool.Get() - timer := t.(*time.Timer) - timer.Reset(s.config.ConnectionWriteTimeout) - defer func() { - timer.Stop() - select { - case <-timer.C: - default: - } - timerPool.Put(t) - }() - - select { - case s.sendCh <- sendReady{Hdr: hdr}: - return nil - case <-s.shutdownCh: - return ErrSessionShutdown - case <-timer.C: - return ErrConnectionWriteTimeout - } -} - -// send is a long running goroutine that sends data -func (s *Session) send() { - for { - select { - case ready := <-s.sendCh: - // Send a header if ready - if ready.Hdr != nil { - sent := 0 - for sent < len(ready.Hdr) { - n, err := s.conn.Write(ready.Hdr[sent:]) - if err != nil { - s.logger.Printf("[ERR] yamux: Failed to write header: %v", err) - asyncSendErr(ready.Err, err) - s.exitErr(err) - return - } - sent += n - } - } - - // Send data from a body if given - if ready.Body != nil { - _, err := io.Copy(s.conn, ready.Body) - if err != nil { - s.logger.Printf("[ERR] yamux: Failed to write body: %v", err) - asyncSendErr(ready.Err, err) - s.exitErr(err) - return - } - } - - // No error, successful send - asyncSendErr(ready.Err, nil) - case <-s.shutdownCh: - return - } - } -} - -// recv is a long running goroutine that accepts new data -func (s *Session) recv() { - if err := s.recvLoop(); err != nil { - s.exitErr(err) - } -} - -// Ensure that the index of the handler (typeData/typeWindowUpdate/etc) matches the message type -var ( - handlers = []func(*Session, header) error{ - typeData: (*Session).handleStreamMessage, - typeWindowUpdate: (*Session).handleStreamMessage, - typePing: (*Session).handlePing, - typeGoAway: (*Session).handleGoAway, - } -) - -// recvLoop continues to receive data until a fatal error is encountered -func (s *Session) recvLoop() error { - defer close(s.recvDoneCh) - hdr := header(make([]byte, headerSize)) - for { - // Read the header - if _, err := io.ReadFull(s.bufRead, hdr); err != nil { - if err != io.EOF && !strings.Contains(err.Error(), "closed") && !strings.Contains(err.Error(), "reset by peer") { - s.logger.Printf("[ERR] yamux: Failed to read header: %v", err) - } - return err - } - - // Verify the version - if hdr.Version() != protoVersion { - s.logger.Printf("[ERR] yamux: Invalid protocol version: %d", hdr.Version()) - return ErrInvalidVersion - } - - mt := hdr.MsgType() - if mt < typeData || mt > typeGoAway { - return ErrInvalidMsgType - } - - if err := handlers[mt](s, hdr); err != nil { - return err - } - } -} - -// handleStreamMessage handles either a data or window update frame -func (s *Session) handleStreamMessage(hdr header) error { - // Check for a new stream creation - id := hdr.StreamID() - flags := hdr.Flags() - if flags&flagSYN == flagSYN { - if err := s.incomingStream(id); err != nil { - return err - } - } - - // Get the stream - s.streamLock.Lock() - stream := s.streams[id] - s.streamLock.Unlock() - - // If we do not have a stream, likely we sent a RST - if stream == nil { - // Drain any data on the wire - if hdr.MsgType() == typeData && hdr.Length() > 0 { - s.logger.Printf("[WARN] yamux: Discarding data for stream: %d", id) - if _, err := io.CopyN(ioutil.Discard, s.bufRead, int64(hdr.Length())); err != nil { - s.logger.Printf("[ERR] yamux: Failed to discard data: %v", err) - return nil - } - } else { - s.logger.Printf("[WARN] yamux: frame for missing stream: %v", hdr) - } - return nil - } - - // Check if this is a window update - if hdr.MsgType() == typeWindowUpdate { - if err := stream.incrSendWindow(hdr, flags); err != nil { - if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil { - s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr) - } - return err - } - return nil - } - - // Read the new data - if err := stream.readData(hdr, flags, s.bufRead); err != nil { - if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil { - s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr) - } - return err - } - return nil -} - -// handlePing is invokde for a typePing frame -func (s *Session) handlePing(hdr header) error { - flags := hdr.Flags() - pingID := hdr.Length() - - // Check if this is a query, respond back in a separate context so we - // don't interfere with the receiving thread blocking for the write. - if flags&flagSYN == flagSYN { - go func() { - hdr := header(make([]byte, headerSize)) - hdr.encode(typePing, flagACK, 0, pingID) - if err := s.sendNoWait(hdr); err != nil { - s.logger.Printf("[WARN] yamux: failed to send ping reply: %v", err) - } - }() - return nil - } - - // Handle a response - s.pingLock.Lock() - ch := s.pings[pingID] - if ch != nil { - delete(s.pings, pingID) - close(ch) - } - s.pingLock.Unlock() - return nil -} - -// handleGoAway is invokde for a typeGoAway frame -func (s *Session) handleGoAway(hdr header) error { - code := hdr.Length() - switch code { - case goAwayNormal: - atomic.SwapInt32(&s.remoteGoAway, 1) - case goAwayProtoErr: - s.logger.Printf("[ERR] yamux: received protocol error go away") - return fmt.Errorf("yamux protocol error") - case goAwayInternalErr: - s.logger.Printf("[ERR] yamux: received internal error go away") - return fmt.Errorf("remote yamux internal error") - default: - s.logger.Printf("[ERR] yamux: received unexpected go away") - return fmt.Errorf("unexpected go away received") - } - return nil -} - -// incomingStream is used to create a new incoming stream -func (s *Session) incomingStream(id uint32) error { - // Reject immediately if we are doing a go away - if atomic.LoadInt32(&s.localGoAway) == 1 { - hdr := header(make([]byte, headerSize)) - hdr.encode(typeWindowUpdate, flagRST, id, 0) - return s.sendNoWait(hdr) - } - - // Allocate a new stream - stream := newStream(s, id, streamSYNReceived) - - s.streamLock.Lock() - defer s.streamLock.Unlock() - - // Check if stream already exists - if _, ok := s.streams[id]; ok { - s.logger.Printf("[ERR] yamux: duplicate stream declared") - if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil { - s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr) - } - return ErrDuplicateStream - } - - // Register the stream - s.streams[id] = stream - - // Check if we've exceeded the backlog - select { - case s.acceptCh <- stream: - return nil - default: - // Backlog exceeded! RST the stream - s.logger.Printf("[WARN] yamux: backlog exceeded, forcing connection reset") - delete(s.streams, id) - stream.sendHdr.encode(typeWindowUpdate, flagRST, id, 0) - return s.sendNoWait(stream.sendHdr) - } -} - -// closeStream is used to close a stream once both sides have -// issued a close. If there was an in-flight SYN and the stream -// was not yet established, then this will give the credit back. -func (s *Session) closeStream(id uint32) { - s.streamLock.Lock() - if _, ok := s.inflight[id]; ok { - select { - case <-s.synCh: - default: - s.logger.Printf("[ERR] yamux: SYN tracking out of sync") - } - } - delete(s.streams, id) - s.streamLock.Unlock() -} - -// establishStream is used to mark a stream that was in the -// SYN Sent state as established. -func (s *Session) establishStream(id uint32) { - s.streamLock.Lock() - if _, ok := s.inflight[id]; ok { - delete(s.inflight, id) - } else { - s.logger.Printf("[ERR] yamux: established stream without inflight SYN (no tracking entry)") - } - select { - case <-s.synCh: - default: - s.logger.Printf("[ERR] yamux: established stream without inflight SYN (didn't have semaphore)") - } - s.streamLock.Unlock() -} diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/spec.md b/src/runtime/vendor/github.com/hashicorp/yamux/spec.md deleted file mode 100644 index 183d797bde..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/spec.md +++ /dev/null @@ -1,140 +0,0 @@ -# Specification - -We use this document to detail the internal specification of Yamux. -This is used both as a guide for implementing Yamux, but also for -alternative interoperable libraries to be built. - -# Framing - -Yamux uses a streaming connection underneath, but imposes a message -framing so that it can be shared between many logical streams. Each -frame contains a header like: - -* Version (8 bits) -* Type (8 bits) -* Flags (16 bits) -* StreamID (32 bits) -* Length (32 bits) - -This means that each header has a 12 byte overhead. -All fields are encoded in network order (big endian). -Each field is described below: - -## Version Field - -The version field is used for future backward compatibility. At the -current time, the field is always set to 0, to indicate the initial -version. - -## Type Field - -The type field is used to switch the frame message type. The following -message types are supported: - -* 0x0 Data - Used to transmit data. May transmit zero length payloads - depending on the flags. - -* 0x1 Window Update - Used to updated the senders receive window size. - This is used to implement per-session flow control. - -* 0x2 Ping - Used to measure RTT. It can also be used to heart-beat - and do keep-alives over TCP. - -* 0x3 Go Away - Used to close a session. - -## Flag Field - -The flags field is used to provide additional information related -to the message type. The following flags are supported: - -* 0x1 SYN - Signals the start of a new stream. May be sent with a data or - window update message. Also sent with a ping to indicate outbound. - -* 0x2 ACK - Acknowledges the start of a new stream. May be sent with a data - or window update message. Also sent with a ping to indicate response. - -* 0x4 FIN - Performs a half-close of a stream. May be sent with a data - message or window update. - -* 0x8 RST - Reset a stream immediately. May be sent with a data or - window update message. - -## StreamID Field - -The StreamID field is used to identify the logical stream the frame -is addressing. The client side should use odd ID's, and the server even. -This prevents any collisions. Additionally, the 0 ID is reserved to represent -the session. - -Both Ping and Go Away messages should always use the 0 StreamID. - -## Length Field - -The meaning of the length field depends on the message type: - -* Data - provides the length of bytes following the header -* Window update - provides a delta update to the window size -* Ping - Contains an opaque value, echoed back -* Go Away - Contains an error code - -# Message Flow - -There is no explicit connection setup, as Yamux relies on an underlying -transport to be provided. However, there is a distinction between client -and server side of the connection. - -## Opening a stream - -To open a stream, an initial data or window update frame is sent -with a new StreamID. The SYN flag should be set to signal a new stream. - -The receiver must then reply with either a data or window update frame -with the StreamID along with the ACK flag to accept the stream or with -the RST flag to reject the stream. - -Because we are relying on the reliable stream underneath, a connection -can begin sending data once the SYN flag is sent. The corresponding -ACK does not need to be received. This is particularly well suited -for an RPC system where a client wants to open a stream and immediately -fire a request without waiting for the RTT of the ACK. - -This does introduce the possibility of a connection being rejected -after data has been sent already. This is a slight semantic difference -from TCP, where the conection cannot be refused after it is opened. -Clients should be prepared to handle this by checking for an error -that indicates a RST was received. - -## Closing a stream - -To close a stream, either side sends a data or window update frame -along with the FIN flag. This does a half-close indicating the sender -will send no further data. - -Once both sides have closed the connection, the stream is closed. - -Alternatively, if an error occurs, the RST flag can be used to -hard close a stream immediately. - -## Flow Control - -When Yamux is initially starts each stream with a 256KB window size. -There is no window size for the session. - -To prevent the streams from stalling, window update frames should be -sent regularly. Yamux can be configured to provide a larger limit for -windows sizes. Both sides assume the initial 256KB window, but can -immediately send a window update as part of the SYN/ACK indicating a -larger window. - -Both sides should track the number of bytes sent in Data frames -only, as only they are tracked as part of the window size. - -## Session termination - -When a session is being terminated, the Go Away message should -be sent. The Length should be set to one of the following to -provide an error code: - -* 0x0 Normal termination -* 0x1 Protocol error -* 0x2 Internal error diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/stream.go b/src/runtime/vendor/github.com/hashicorp/yamux/stream.go deleted file mode 100644 index aa23919739..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/stream.go +++ /dev/null @@ -1,470 +0,0 @@ -package yamux - -import ( - "bytes" - "io" - "sync" - "sync/atomic" - "time" -) - -type streamState int - -const ( - streamInit streamState = iota - streamSYNSent - streamSYNReceived - streamEstablished - streamLocalClose - streamRemoteClose - streamClosed - streamReset -) - -// Stream is used to represent a logical stream -// within a session. -type Stream struct { - recvWindow uint32 - sendWindow uint32 - - id uint32 - session *Session - - state streamState - stateLock sync.Mutex - - recvBuf *bytes.Buffer - recvLock sync.Mutex - - controlHdr header - controlErr chan error - controlHdrLock sync.Mutex - - sendHdr header - sendErr chan error - sendLock sync.Mutex - - recvNotifyCh chan struct{} - sendNotifyCh chan struct{} - - readDeadline atomic.Value // time.Time - writeDeadline atomic.Value // time.Time -} - -// newStream is used to construct a new stream within -// a given session for an ID -func newStream(session *Session, id uint32, state streamState) *Stream { - s := &Stream{ - id: id, - session: session, - state: state, - controlHdr: header(make([]byte, headerSize)), - controlErr: make(chan error, 1), - sendHdr: header(make([]byte, headerSize)), - sendErr: make(chan error, 1), - recvWindow: initialStreamWindow, - sendWindow: initialStreamWindow, - recvNotifyCh: make(chan struct{}, 1), - sendNotifyCh: make(chan struct{}, 1), - } - s.readDeadline.Store(time.Time{}) - s.writeDeadline.Store(time.Time{}) - return s -} - -// Session returns the associated stream session -func (s *Stream) Session() *Session { - return s.session -} - -// StreamID returns the ID of this stream -func (s *Stream) StreamID() uint32 { - return s.id -} - -// Read is used to read from the stream -func (s *Stream) Read(b []byte) (n int, err error) { - defer asyncNotify(s.recvNotifyCh) -START: - s.stateLock.Lock() - switch s.state { - case streamLocalClose: - fallthrough - case streamRemoteClose: - fallthrough - case streamClosed: - s.recvLock.Lock() - if s.recvBuf == nil || s.recvBuf.Len() == 0 { - s.recvLock.Unlock() - s.stateLock.Unlock() - return 0, io.EOF - } - s.recvLock.Unlock() - case streamReset: - s.stateLock.Unlock() - return 0, ErrConnectionReset - } - s.stateLock.Unlock() - - // If there is no data available, block - s.recvLock.Lock() - if s.recvBuf == nil || s.recvBuf.Len() == 0 { - s.recvLock.Unlock() - goto WAIT - } - - // Read any bytes - n, _ = s.recvBuf.Read(b) - s.recvLock.Unlock() - - // Send a window update potentially - err = s.sendWindowUpdate() - return n, err - -WAIT: - var timeout <-chan time.Time - var timer *time.Timer - readDeadline := s.readDeadline.Load().(time.Time) - if !readDeadline.IsZero() { - delay := readDeadline.Sub(time.Now()) - timer = time.NewTimer(delay) - timeout = timer.C - } - select { - case <-s.recvNotifyCh: - if timer != nil { - timer.Stop() - } - goto START - case <-timeout: - return 0, ErrTimeout - } -} - -// Write is used to write to the stream -func (s *Stream) Write(b []byte) (n int, err error) { - s.sendLock.Lock() - defer s.sendLock.Unlock() - total := 0 - for total < len(b) { - n, err := s.write(b[total:]) - total += n - if err != nil { - return total, err - } - } - return total, nil -} - -// write is used to write to the stream, may return on -// a short write. -func (s *Stream) write(b []byte) (n int, err error) { - var flags uint16 - var max uint32 - var body io.Reader -START: - s.stateLock.Lock() - switch s.state { - case streamLocalClose: - fallthrough - case streamClosed: - s.stateLock.Unlock() - return 0, ErrStreamClosed - case streamReset: - s.stateLock.Unlock() - return 0, ErrConnectionReset - } - s.stateLock.Unlock() - - // If there is no data available, block - window := atomic.LoadUint32(&s.sendWindow) - if window == 0 { - goto WAIT - } - - // Determine the flags if any - flags = s.sendFlags() - - // Send up to our send window - max = min(window, uint32(len(b))) - body = bytes.NewReader(b[:max]) - - // Send the header - s.sendHdr.encode(typeData, flags, s.id, max) - if err = s.session.waitForSendErr(s.sendHdr, body, s.sendErr); err != nil { - return 0, err - } - - // Reduce our send window - atomic.AddUint32(&s.sendWindow, ^uint32(max-1)) - - // Unlock - return int(max), err - -WAIT: - var timeout <-chan time.Time - writeDeadline := s.writeDeadline.Load().(time.Time) - if !writeDeadline.IsZero() { - delay := writeDeadline.Sub(time.Now()) - timeout = time.After(delay) - } - select { - case <-s.sendNotifyCh: - goto START - case <-timeout: - return 0, ErrTimeout - } - return 0, nil -} - -// sendFlags determines any flags that are appropriate -// based on the current stream state -func (s *Stream) sendFlags() uint16 { - s.stateLock.Lock() - defer s.stateLock.Unlock() - var flags uint16 - switch s.state { - case streamInit: - flags |= flagSYN - s.state = streamSYNSent - case streamSYNReceived: - flags |= flagACK - s.state = streamEstablished - } - return flags -} - -// sendWindowUpdate potentially sends a window update enabling -// further writes to take place. Must be invoked with the lock. -func (s *Stream) sendWindowUpdate() error { - s.controlHdrLock.Lock() - defer s.controlHdrLock.Unlock() - - // Determine the delta update - max := s.session.config.MaxStreamWindowSize - var bufLen uint32 - s.recvLock.Lock() - if s.recvBuf != nil { - bufLen = uint32(s.recvBuf.Len()) - } - delta := (max - bufLen) - s.recvWindow - - // Determine the flags if any - flags := s.sendFlags() - - // Check if we can omit the update - if delta < (max/2) && flags == 0 { - s.recvLock.Unlock() - return nil - } - - // Update our window - s.recvWindow += delta - s.recvLock.Unlock() - - // Send the header - s.controlHdr.encode(typeWindowUpdate, flags, s.id, delta) - if err := s.session.waitForSendErr(s.controlHdr, nil, s.controlErr); err != nil { - return err - } - return nil -} - -// sendClose is used to send a FIN -func (s *Stream) sendClose() error { - s.controlHdrLock.Lock() - defer s.controlHdrLock.Unlock() - - flags := s.sendFlags() - flags |= flagFIN - s.controlHdr.encode(typeWindowUpdate, flags, s.id, 0) - if err := s.session.waitForSendErr(s.controlHdr, nil, s.controlErr); err != nil { - return err - } - return nil -} - -// Close is used to close the stream -func (s *Stream) Close() error { - closeStream := false - s.stateLock.Lock() - switch s.state { - // Opened means we need to signal a close - case streamSYNSent: - fallthrough - case streamSYNReceived: - fallthrough - case streamEstablished: - s.state = streamLocalClose - goto SEND_CLOSE - - case streamLocalClose: - case streamRemoteClose: - s.state = streamClosed - closeStream = true - goto SEND_CLOSE - - case streamClosed: - case streamReset: - default: - panic("unhandled state") - } - s.stateLock.Unlock() - return nil -SEND_CLOSE: - s.stateLock.Unlock() - s.sendClose() - s.notifyWaiting() - if closeStream { - s.session.closeStream(s.id) - } - return nil -} - -// forceClose is used for when the session is exiting -func (s *Stream) forceClose() { - s.stateLock.Lock() - s.state = streamClosed - s.stateLock.Unlock() - s.notifyWaiting() -} - -// processFlags is used to update the state of the stream -// based on set flags, if any. Lock must be held -func (s *Stream) processFlags(flags uint16) error { - // Close the stream without holding the state lock - closeStream := false - defer func() { - if closeStream { - s.session.closeStream(s.id) - } - }() - - s.stateLock.Lock() - defer s.stateLock.Unlock() - if flags&flagACK == flagACK { - if s.state == streamSYNSent { - s.state = streamEstablished - } - s.session.establishStream(s.id) - } - if flags&flagFIN == flagFIN { - switch s.state { - case streamSYNSent: - fallthrough - case streamSYNReceived: - fallthrough - case streamEstablished: - s.state = streamRemoteClose - s.notifyWaiting() - case streamLocalClose: - s.state = streamClosed - closeStream = true - s.notifyWaiting() - default: - s.session.logger.Printf("[ERR] yamux: unexpected FIN flag in state %d", s.state) - return ErrUnexpectedFlag - } - } - if flags&flagRST == flagRST { - s.state = streamReset - closeStream = true - s.notifyWaiting() - } - return nil -} - -// notifyWaiting notifies all the waiting channels -func (s *Stream) notifyWaiting() { - asyncNotify(s.recvNotifyCh) - asyncNotify(s.sendNotifyCh) -} - -// incrSendWindow updates the size of our send window -func (s *Stream) incrSendWindow(hdr header, flags uint16) error { - if err := s.processFlags(flags); err != nil { - return err - } - - // Increase window, unblock a sender - atomic.AddUint32(&s.sendWindow, hdr.Length()) - asyncNotify(s.sendNotifyCh) - return nil -} - -// readData is used to handle a data frame -func (s *Stream) readData(hdr header, flags uint16, conn io.Reader) error { - if err := s.processFlags(flags); err != nil { - return err - } - - // Check that our recv window is not exceeded - length := hdr.Length() - if length == 0 { - return nil - } - - // Wrap in a limited reader - conn = &io.LimitedReader{R: conn, N: int64(length)} - - // Copy into buffer - s.recvLock.Lock() - - if length > s.recvWindow { - s.session.logger.Printf("[ERR] yamux: receive window exceeded (stream: %d, remain: %d, recv: %d)", s.id, s.recvWindow, length) - return ErrRecvWindowExceeded - } - - if s.recvBuf == nil { - // Allocate the receive buffer just-in-time to fit the full data frame. - // This way we can read in the whole packet without further allocations. - s.recvBuf = bytes.NewBuffer(make([]byte, 0, length)) - } - if _, err := io.Copy(s.recvBuf, conn); err != nil { - s.session.logger.Printf("[ERR] yamux: Failed to read stream data: %v", err) - s.recvLock.Unlock() - return err - } - - // Decrement the receive window - s.recvWindow -= length - s.recvLock.Unlock() - - // Unblock any readers - asyncNotify(s.recvNotifyCh) - return nil -} - -// SetDeadline sets the read and write deadlines -func (s *Stream) SetDeadline(t time.Time) error { - if err := s.SetReadDeadline(t); err != nil { - return err - } - if err := s.SetWriteDeadline(t); err != nil { - return err - } - return nil -} - -// SetReadDeadline sets the deadline for future Read calls. -func (s *Stream) SetReadDeadline(t time.Time) error { - s.readDeadline.Store(t) - return nil -} - -// SetWriteDeadline sets the deadline for future Write calls -func (s *Stream) SetWriteDeadline(t time.Time) error { - s.writeDeadline.Store(t) - return nil -} - -// Shrink is used to compact the amount of buffers utilized -// This is useful when using Yamux in a connection pool to reduce -// the idle memory utilization. -func (s *Stream) Shrink() { - s.recvLock.Lock() - if s.recvBuf != nil && s.recvBuf.Len() == 0 { - s.recvBuf = nil - } - s.recvLock.Unlock() -} diff --git a/src/runtime/vendor/github.com/hashicorp/yamux/util.go b/src/runtime/vendor/github.com/hashicorp/yamux/util.go deleted file mode 100644 index 8a73e9249a..0000000000 --- a/src/runtime/vendor/github.com/hashicorp/yamux/util.go +++ /dev/null @@ -1,43 +0,0 @@ -package yamux - -import ( - "sync" - "time" -) - -var ( - timerPool = &sync.Pool{ - New: func() interface{} { - timer := time.NewTimer(time.Hour * 1e6) - timer.Stop() - return timer - }, - } -) - -// asyncSendErr is used to try an async send of an error -func asyncSendErr(ch chan error, err error) { - if ch == nil { - return - } - select { - case ch <- err: - default: - } -} - -// asyncNotify is used to signal a waiting goroutine -func asyncNotify(ch chan struct{}) { - select { - case ch <- struct{}{}: - default: - } -} - -// min computes the minimum of two values -func min(a, b uint32) uint32 { - if a < b { - return a - } - return b -} diff --git a/src/runtime/vendor/github.com/intel/govmm/qemu/qemu.go b/src/runtime/vendor/github.com/intel/govmm/qemu/qemu.go index a149dad8b0..4716595cd7 100644 --- a/src/runtime/vendor/github.com/intel/govmm/qemu/qemu.go +++ b/src/runtime/vendor/github.com/intel/govmm/qemu/qemu.go @@ -288,6 +288,23 @@ func (object Object) QemuParams(config *Config) []string { return qemuParams } +// Virtio9PMultidev filesystem behaviour to deal +// with multiple devices being shared with a 9p export. +type Virtio9PMultidev string + +const ( + // Remap shares multiple devices with only one export. + Remap Virtio9PMultidev = "remap" + + // Warn assumes that only one device is shared by the same export. + // Only a warning message is logged (once) by qemu on host side. + // This is the default behaviour. + Warn Virtio9PMultidev = "warn" + + // Forbid like "warn" but also deny access to additional devices on guest. + Forbid Virtio9PMultidev = "forbid" +) + // FSDriver represents a qemu filesystem driver. type FSDriver string @@ -350,6 +367,10 @@ type FSDevice struct { // Transport is the virtio transport for this device. Transport VirtioTransport + + // Multidev is the filesystem behaviour to deal + // with multiple devices being shared with a 9p export + Multidev Virtio9PMultidev } // Virtio9PTransport is a map of the virtio-9p device name that corresponds @@ -393,6 +414,10 @@ func (fsdev FSDevice) QemuParams(config *Config) []string { fsParams = append(fsParams, fmt.Sprintf(",path=%s", fsdev.Path)) fsParams = append(fsParams, fmt.Sprintf(",security_model=%s", fsdev.SecurityModel)) + if fsdev.Multidev != "" { + fsParams = append(fsParams, fmt.Sprintf(",multidevs=%s", fsdev.Multidev)) + } + qemuParams = append(qemuParams, "-device") qemuParams = append(qemuParams, strings.Join(deviceParams, "")) diff --git a/src/runtime/vendor/modules.txt b/src/runtime/vendor/modules.txt index fcf6708b91..c7d0715550 100644 --- a/src/runtime/vendor/modules.txt +++ b/src/runtime/vendor/modules.txt @@ -158,7 +158,6 @@ github.com/docker/docker/pkg/stringid ## explicit github.com/docker/go-events # github.com/docker/go-units v0.3.3 -## explicit github.com/docker/go-units # github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8 github.com/globalsign/mgo/bson @@ -223,10 +222,7 @@ github.com/hashicorp/errwrap # github.com/hashicorp/go-multierror v1.0.0 ## explicit github.com/hashicorp/go-multierror -# github.com/hashicorp/yamux v0.0.0-20190923154419-df201c70410d -## explicit -github.com/hashicorp/yamux -# github.com/intel/govmm v0.0.0-20200602145448-7cc469641b7b +# github.com/intel/govmm v0.0.0-20200724170648-af9e34b91ae9 ## explicit github.com/intel/govmm/qemu # github.com/konsorten/go-windows-terminal-sequences v1.0.1 @@ -241,7 +237,6 @@ github.com/matttproud/golang_protobuf_extensions/pbutil ## explicit github.com/mdlayher/vsock # github.com/mitchellh/mapstructure v1.1.2 -## explicit github.com/mitchellh/mapstructure # github.com/opencontainers/go-digest v1.0.0-rc1 github.com/opencontainers/go-digest