├── .github ├── FUNDING.yml ├── dependabot.yml └── workflows │ └── codeql-analysis.yml ├── .gitignore ├── LICENSE ├── README.md ├── go.mod ├── go.sum ├── main.go └── pkg └── vmnet ├── error.go ├── vmnet.go ├── vmnet.h └── vmnet.m /.github/FUNDING.yml: -------------------------------------------------------------------------------- 1 | github: [alessiodionisi] 2 | -------------------------------------------------------------------------------- /.github/dependabot.yml: -------------------------------------------------------------------------------- 1 | version: 2 2 | updates: 3 | - package-ecosystem: github-actions 4 | directory: / 5 | schedule: 6 | interval: daily 7 | 8 | - package-ecosystem: gomod 9 | directory: / 10 | schedule: 11 | interval: daily 12 | -------------------------------------------------------------------------------- /.github/workflows/codeql-analysis.yml: -------------------------------------------------------------------------------- 1 | name: "CodeQL" 2 | 3 | on: 4 | push: 5 | branches: [main] 6 | pull_request: 7 | branches: [main] 8 | schedule: 9 | - cron: 27 4 * * 3 10 | 11 | jobs: 12 | analyze: 13 | name: Analyze 14 | runs-on: ubuntu-latest 15 | permissions: 16 | actions: read 17 | contents: read 18 | security-events: write 19 | 20 | strategy: 21 | fail-fast: false 22 | matrix: 23 | language: [go] 24 | 25 | steps: 26 | - name: Checkout repository 27 | uses: actions/checkout@v3 28 | 29 | - name: Initialize CodeQL 30 | uses: github/codeql-action/init@v2 31 | with: 32 | languages: ${{ matrix.language }} 33 | 34 | - name: Autobuild 35 | uses: github/codeql-action/autobuild@v2 36 | 37 | - name: Perform CodeQL Analysis 38 | uses: github/codeql-action/analyze@v2 39 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | /qemu-vmnet 2 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU AFFERO GENERAL PUBLIC LICENSE 2 | Version 3, 19 November 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU Affero General Public License is a free, copyleft license for 11 | software and other kinds of works, specifically designed to ensure 12 | cooperation with the community in the case of network server software. 13 | 14 | The licenses for most software and other practical works are designed 15 | to take away your freedom to share and change the works. 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Limitation of Liability. 599 | 600 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 601 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 602 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 603 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 604 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 605 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 606 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 607 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 608 | SUCH DAMAGES. 609 | 610 | 17. Interpretation of Sections 15 and 16. 611 | 612 | If the disclaimer of warranty and limitation of liability provided 613 | above cannot be given local legal effect according to their terms, 614 | reviewing courts shall apply local law that most closely approximates 615 | an absolute waiver of all civil liability in connection with the 616 | Program, unless a warranty or assumption of liability accompanies a 617 | copy of the Program in return for a fee. 618 | 619 | END OF TERMS AND CONDITIONS 620 | 621 | How to Apply These Terms to Your New Programs 622 | 623 | If you develop a new program, and you want it to be of the greatest 624 | possible use to the public, the best way to achieve this is to make it 625 | free software which everyone can redistribute and change under these terms. 626 | 627 | To do so, attach the following notices to the program. It is safest 628 | to attach them to the start of each source file to most effectively 629 | state the exclusion of warranty; and each file should have at least 630 | the "copyright" line and a pointer to where the full notice is found. 631 | 632 | 633 | Copyright (C) 634 | 635 | This program is free software: you can redistribute it and/or modify 636 | it under the terms of the GNU Affero General Public License as published 637 | by the Free Software Foundation, either version 3 of the License, or 638 | (at your option) any later version. 639 | 640 | This program is distributed in the hope that it will be useful, 641 | but WITHOUT ANY WARRANTY; without even the implied warranty of 642 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 643 | GNU Affero General Public License for more details. 644 | 645 | You should have received a copy of the GNU Affero General Public License 646 | along with this program. If not, see . 647 | 648 | Also add information on how to contact you by electronic and paper mail. 649 | 650 | If your software can interact with users remotely through a computer 651 | network, you should also make sure that it provides a way for users to 652 | get its source. For example, if your program is a web application, its 653 | interface could display a "Source" link that leads users to an archive 654 | of the code. There are many ways you could offer source, and different 655 | solutions will be better for different programs; see section 13 for the 656 | specific requirements. 657 | 658 | You should also get your employer (if you work as a programmer) or school, 659 | if any, to sign a "copyright disclaimer" for the program, if necessary. 660 | For more information on this, and how to apply and follow the GNU AGPL, see 661 | . -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # qemu-vmnet 2 | 3 | > ⚠️ The project has been archived because now QEMU supports vmnet natively as network device. 4 | > See: `qemu-system-aarch64 -machine virt -netdev help` 5 | 6 | Native macOS networking for QEMU using `vmnet.framework` and `socket` networking. 7 | 8 | ## Requirements 9 | 10 | - macOS 10.10 or later. 11 | - Any QEMU version that supports `socket` networking, I tested it with 6.1.0 on ARM. 12 | 13 | ## Getting started 14 | 15 | ### Install qemu-vmnet 16 | 17 | The only way for now is to have a working `Go` environment and install `qemu-vmnet` with: 18 | 19 | ```shell 20 | go install github.com/alessiodionisi/qemu-vmnet@latest 21 | ``` 22 | 23 | ### Start qemu-vmnet 24 | 25 | You have to start `qemu-vmnet` with `sudo`, this is a requirement of `vmnet`. 26 | 27 | Example: 28 | 29 | ```shell 30 | sudo qemu-vmnet 31 | ``` 32 | 33 | ### Add a network device 34 | 35 | You need to add a new network device to your virtual machine. 36 | 37 | Note: `netdev` value is the `id` of the network device, can be any value. 38 | 39 | Example: 40 | 41 | ``` 42 | -device virtio-net,netdev=net0 43 | ``` 44 | 45 | ### Configure the network device 46 | 47 | The network device you just added must be configured to use `socket` networking and UDP port `2233` (can be changed, see [Options](#Options)). 48 | 49 | Note: `localaddr` can be any free port, but you must specify it. 50 | 51 | Example: 52 | 53 | ``` 54 | -netdev socket,id=net0,udp=:2233,localaddr=:1122 55 | ``` 56 | 57 | ### Enjoy 58 | 59 | Enjoy your fully working networking with a dedicated IP! 60 | 61 | ## Options 62 | 63 | - `-address` sets the listening address (default ":2233") 64 | - `-cpuprofile file` write cpu profile to file 65 | - `-debug` sets log level to debug 66 | - `-memprofile file` write memory profile to file 67 | - `-trace` sets log level to trace 68 | 69 | In the future `vmnet` can be configured in bridged mode :) 70 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/alessiodionisi/qemu-vmnet 2 | 3 | go 1.19 4 | 5 | require ( 6 | github.com/google/gopacket v1.1.19 7 | github.com/rs/zerolog v1.29.1 8 | ) 9 | 10 | require ( 11 | github.com/mattn/go-colorable v0.1.13 // indirect 12 | github.com/mattn/go-isatty v0.0.17 // indirect 13 | golang.org/x/sys v0.4.0 // indirect 14 | ) 15 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc= 2 | github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA= 3 | github.com/google/gopacket v1.1.19 h1:ves8RnFZPGiFnTS0uPQStjwru6uO6h+nlr9j6fL7kF8= 4 | github.com/google/gopacket v1.1.19/go.mod h1:iJ8V8n6KS+z2U1A8pUwu8bW5SyEMkXJB8Yo/Vo+TKTo= 5 | github.com/mattn/go-colorable v0.1.12/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4= 6 | github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA= 7 | github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg= 8 | github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94= 9 | github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM= 10 | github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPng= 11 | github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM= 12 | github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= 13 | github.com/rs/xid v1.4.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg= 14 | github.com/rs/zerolog v1.29.1 h1:cO+d60CHkknCbvzEWxP0S9K6KqyTjrCNUy1LdQLCGPc= 15 | github.com/rs/zerolog v1.29.1/go.mod h1:Le6ESbR7hc+DP6Lt1THiV8CQSdkkNrd3R0XbEgp3ZBU= 16 | golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= 17 | golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= 18 | golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY= 19 | golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg= 20 | golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= 21 | golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 22 | golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 23 | golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 24 | golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 25 | golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 26 | golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 27 | golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 28 | golang.org/x/sys v0.4.0 h1:Zr2JFtRQNX3BCZ8YtxRE9hNJYC8J6I1MVbMg6owUp18= 29 | golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 30 | golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= 31 | golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28= 32 | golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= 33 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "errors" 5 | "flag" 6 | "net" 7 | "os" 8 | "os/signal" 9 | "runtime" 10 | "runtime/pprof" 11 | "sync" 12 | "syscall" 13 | 14 | "github.com/alessiodionisi/qemu-vmnet/pkg/vmnet" 15 | "github.com/google/gopacket" 16 | "github.com/google/gopacket/layers" 17 | "github.com/rs/zerolog" 18 | "github.com/rs/zerolog/log" 19 | ) 20 | 21 | func main() { 22 | log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr}) 23 | 24 | debug := flag.Bool("debug", false, "sets log level to debug") 25 | trace := flag.Bool("trace", false, "sets log level to trace") 26 | address := flag.String("address", ":2233", "sets the listening address") 27 | cpuprofile := flag.String("cpuprofile", "", "write cpu profile to `file`") 28 | memprofile := flag.String("memprofile", "", "write memory profile to `file`") 29 | 30 | flag.Parse() 31 | 32 | if *cpuprofile != "" { 33 | f, err := os.Create(*cpuprofile) 34 | if err != nil { 35 | log.Fatal().Msgf("could not create CPU profile: %s", err.Error()) 36 | return 37 | } 38 | defer f.Close() 39 | 40 | if err := pprof.StartCPUProfile(f); err != nil { 41 | log.Fatal().Msgf("could not start CPU profile: %s", err.Error()) 42 | return 43 | } 44 | defer pprof.StopCPUProfile() 45 | } 46 | 47 | zerolog.SetGlobalLevel(zerolog.InfoLevel) 48 | if *debug { 49 | zerolog.SetGlobalLevel(zerolog.DebugLevel) 50 | } 51 | if *trace { 52 | zerolog.SetGlobalLevel(zerolog.TraceLevel) 53 | } 54 | 55 | vmn := vmnet.New() 56 | 57 | if err := vmn.Start(); err != nil { 58 | log.Fatal().Msg("unable to start vmnet interface, please try again with \"sudo\"") 59 | return 60 | } 61 | defer vmn.Stop() 62 | 63 | conn, err := net.ListenPacket("udp", *address) 64 | if err != nil { 65 | log.Fatal().Msgf("unable to start the listener, %s", err.Error()) 66 | return 67 | } 68 | defer conn.Close() 69 | 70 | log.Info().Msgf("listening on %s", conn.LocalAddr()) 71 | 72 | writeToVNNetChan := make(chan []byte) 73 | clients := map[string]net.Addr{} 74 | clientsMutex := sync.Mutex{} 75 | 76 | go func() { 77 | for { 78 | bytes := make([]byte, vmn.MaxPacketSize) 79 | bytesLen, err := vmn.Read(bytes) 80 | if err != nil { 81 | log.Error().Msgf("error while reading from vmnet: %s", err.Error()) 82 | continue 83 | } 84 | 85 | bytes = bytes[:bytesLen] 86 | 87 | go func(bytes []byte) { 88 | pkt := gopacket.NewPacket(bytes, layers.LayerTypeEthernet, gopacket.Default) 89 | log.Debug().Msgf("received %d bytes from vmnet", len(bytes)) 90 | log.Trace().Msg(pkt.String()) 91 | 92 | layer := pkt.Layer(layers.LayerTypeEthernet) 93 | if layer == nil { 94 | return 95 | } 96 | 97 | ethLayer, _ := layer.(*layers.Ethernet) 98 | destinationMAC := ethLayer.DstMAC.String() 99 | 100 | clientsMutex.Lock() 101 | addr, exist := clients[destinationMAC] 102 | clientsMutex.Unlock() 103 | if !exist { 104 | return 105 | } 106 | 107 | log.Debug().Msgf("writing %d bytes to %s", len(bytes), destinationMAC) 108 | 109 | if _, err := conn.WriteTo(bytes, addr); err != nil { 110 | if errors.Is(err, net.ErrClosed) { 111 | clientsMutex.Lock() 112 | delete(clients, destinationMAC) 113 | clientsMutex.Unlock() 114 | log.Debug().Msgf("deleted client with mac %s", destinationMAC) 115 | return 116 | } 117 | 118 | log.Error().Msgf("error while writing to %s: %s", addr.String(), err.Error()) 119 | return 120 | } 121 | }(bytes) 122 | } 123 | }() 124 | 125 | go func() { 126 | for { 127 | bytes := <-writeToVNNetChan 128 | 129 | log.Debug().Msgf("writing %d bytes to vmnet", len(bytes)) 130 | 131 | if _, err := vmn.Write(bytes); err != nil { 132 | log.Error().Msgf("error while writing to vmnet: %s", err.Error()) 133 | continue 134 | } 135 | } 136 | }() 137 | 138 | go func() { 139 | for { 140 | bytes := make([]byte, vmn.MaxPacketSize) 141 | bytesLen, addr, err := conn.ReadFrom(bytes) 142 | if err != nil { 143 | if errors.Is(err, net.ErrClosed) { 144 | break 145 | } 146 | 147 | log.Error().Msgf("error while reading from %s: %s", addr.String(), err.Error()) 148 | continue 149 | } 150 | 151 | bytes = bytes[:bytesLen] 152 | 153 | go func(bytes []byte) { 154 | pkt := gopacket.NewPacket(bytes, layers.LayerTypeEthernet, gopacket.Default) 155 | 156 | if layer := pkt.Layer(layers.LayerTypeEthernet); layer != nil { 157 | eth, _ := layer.(*layers.Ethernet) 158 | sourceMAC := eth.SrcMAC.String() 159 | 160 | log.Debug().Msgf("received %d bytes from %s", len(bytes), sourceMAC) 161 | log.Trace().Msg(pkt.String()) 162 | 163 | clientsMutex.Lock() 164 | _, exist := clients[sourceMAC] 165 | clientsMutex.Unlock() 166 | if !exist { 167 | clientsMutex.Lock() 168 | clients[sourceMAC] = addr 169 | clientsMutex.Unlock() 170 | log.Debug().Msgf("new client with mac %s", sourceMAC) 171 | } 172 | 173 | writeToVNNetChan <- bytes 174 | } 175 | }(bytes) 176 | } 177 | }() 178 | 179 | sig := make(chan os.Signal, 1) 180 | signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM) 181 | <-sig 182 | 183 | if *memprofile != "" { 184 | f, err := os.Create(*memprofile) 185 | if err != nil { 186 | log.Fatal().Msgf("could not create memory profile: %s", err.Error()) 187 | return 188 | } 189 | defer f.Close() 190 | 191 | runtime.GC() 192 | 193 | if err := pprof.WriteHeapProfile(f); err != nil { 194 | log.Fatal().Msgf("could not write memory profile: %s", err.Error()) 195 | return 196 | } 197 | } 198 | } 199 | -------------------------------------------------------------------------------- /pkg/vmnet/error.go: -------------------------------------------------------------------------------- 1 | package vmnet 2 | 3 | import "errors" 4 | 5 | var ( 6 | ErrUnableToStart = errors.New("vmnet: unable to start") 7 | ) 8 | -------------------------------------------------------------------------------- /pkg/vmnet/vmnet.go: -------------------------------------------------------------------------------- 1 | package vmnet 2 | 3 | // #cgo CFLAGS: -x objective-c 4 | // #cgo LDFLAGS: -lobjc -framework vmnet 5 | // #include "vmnet.h" 6 | import "C" 7 | import ( 8 | "io" 9 | "unsafe" 10 | ) 11 | 12 | type VMNet struct { 13 | io.ReadWriter 14 | 15 | iface C.interface_ref 16 | mps C.ulonglong 17 | MaxPacketSize int 18 | } 19 | 20 | func (v *VMNet) Start() error { 21 | C._vmnet_start(&v.iface, &v.mps) 22 | if v.iface == nil { 23 | return ErrUnableToStart 24 | } 25 | 26 | v.MaxPacketSize = int(v.mps) 27 | 28 | return nil 29 | } 30 | 31 | func (v *VMNet) Stop() error { 32 | C._vmnet_stop(v.iface) 33 | return nil 34 | } 35 | 36 | func (v *VMNet) Read(p []byte) (n int, err error) { 37 | for { 38 | var cBytes unsafe.Pointer 39 | var cBytesLen C.ulong 40 | 41 | C._vmnet_read(v.iface, v.mps, &cBytes, &cBytesLen) 42 | 43 | if cBytes == nil { 44 | continue 45 | } 46 | 47 | copy(p, C.GoBytes(cBytes, C.int(cBytesLen))) 48 | return int(cBytesLen), nil 49 | } 50 | } 51 | 52 | func (v *VMNet) Write(p []byte) (n int, err error) { 53 | C._vmnet_write(v.iface, C.CBytes(p), C.ulong(len(p))) 54 | return len(p), nil 55 | } 56 | 57 | func New() *VMNet { 58 | return &VMNet{} 59 | } 60 | -------------------------------------------------------------------------------- /pkg/vmnet/vmnet.h: -------------------------------------------------------------------------------- 1 | #ifndef vmnet_h 2 | #define vmnet_h 3 | 4 | #include 5 | #include 6 | 7 | void _vmnet_start(interface_ref *interface, uint64_t *max_packet_size); 8 | void _vmnet_stop(interface_ref interface); 9 | void _vmnet_write(interface_ref interface, void *bytes, size_t bytes_size); 10 | void _vmnet_read(interface_ref interface, uint64_t max_packet_size, 11 | void **bytes, size_t *bytes_size); 12 | 13 | #endif /* vmnet_h */ 14 | -------------------------------------------------------------------------------- /pkg/vmnet/vmnet.m: -------------------------------------------------------------------------------- 1 | #import "vmnet.h" 2 | 3 | void _vmnet_start(interface_ref *interface, uint64_t *max_packet_size) { 4 | xpc_object_t interface_desc = xpc_dictionary_create(NULL, NULL, 0); 5 | xpc_dictionary_set_uint64(interface_desc, vmnet_operation_mode_key, 6 | VMNET_SHARED_MODE); 7 | 8 | dispatch_queue_t interface_start_queue = 9 | dispatch_queue_create("vmnet-start", DISPATCH_QUEUE_SERIAL); 10 | dispatch_semaphore_t interface_start_semaphore = dispatch_semaphore_create(0); 11 | 12 | __block interface_ref _interface; 13 | __block vmnet_return_t interface_status; 14 | __block uint64_t _max_packet_size = 0; 15 | 16 | _interface = vmnet_start_interface( 17 | interface_desc, interface_start_queue, 18 | ^(vmnet_return_t status, xpc_object_t interface_param) { 19 | interface_status = status; 20 | 21 | if (status == VMNET_SUCCESS) { 22 | _max_packet_size = xpc_dictionary_get_uint64( 23 | interface_param, vmnet_max_packet_size_key); 24 | } 25 | 26 | dispatch_semaphore_signal(interface_start_semaphore); 27 | }); 28 | 29 | dispatch_semaphore_wait(interface_start_semaphore, DISPATCH_TIME_FOREVER); 30 | 31 | dispatch_release(interface_start_queue); 32 | xpc_release(interface_desc); 33 | 34 | if (interface_status != VMNET_SUCCESS) { 35 | return; 36 | } 37 | 38 | *interface = _interface; 39 | *max_packet_size = _max_packet_size; 40 | } 41 | 42 | void _vmnet_stop(interface_ref interface) { 43 | if (interface == NULL) { 44 | return; 45 | } 46 | 47 | dispatch_queue_t interface_stop_queue = 48 | dispatch_queue_create("vmnet-stop", DISPATCH_QUEUE_SERIAL); 49 | dispatch_semaphore_t interface_stop_semaphore = dispatch_semaphore_create(0); 50 | 51 | vmnet_stop_interface(interface, interface_stop_queue, 52 | ^(vmnet_return_t status) { 53 | dispatch_semaphore_signal(interface_stop_semaphore); 54 | }); 55 | 56 | dispatch_semaphore_wait(interface_stop_semaphore, DISPATCH_TIME_FOREVER); 57 | dispatch_release(interface_stop_queue); 58 | } 59 | 60 | void _vmnet_write(interface_ref interface, void *bytes, size_t bytes_size) { 61 | if (interface == NULL) { 62 | return; 63 | } 64 | 65 | struct iovec packets_iovec = { 66 | .iov_base = bytes, 67 | .iov_len = bytes_size, 68 | }; 69 | 70 | struct vmpktdesc packets = { 71 | .vm_pkt_size = bytes_size, 72 | .vm_pkt_iov = &packets_iovec, 73 | .vm_pkt_iovcnt = 1, 74 | .vm_flags = 0, 75 | }; 76 | 77 | int packets_count = packets.vm_pkt_iovcnt; 78 | vmnet_write(interface, &packets, &packets_count); 79 | } 80 | 81 | void _vmnet_read(interface_ref interface, uint64_t max_packet_size, 82 | void **bytes, size_t *bytes_size) { 83 | struct iovec packets_iovec = { 84 | .iov_base = malloc(max_packet_size), 85 | .iov_len = max_packet_size, 86 | }; 87 | 88 | struct vmpktdesc packets = { 89 | .vm_pkt_size = max_packet_size, 90 | .vm_pkt_iov = &packets_iovec, 91 | .vm_pkt_iovcnt = 1, 92 | .vm_flags = 0, 93 | }; 94 | 95 | int packets_count = 1; 96 | vmnet_return_t status = vmnet_read(interface, &packets, &packets_count); 97 | 98 | if (status != VMNET_SUCCESS || packets_count == 0) { 99 | return; 100 | } 101 | 102 | *bytes = packets.vm_pkt_iov->iov_base; 103 | *bytes_size = packets.vm_pkt_size; 104 | } 105 | --------------------------------------------------------------------------------