fs9p.cc revision 12076
110391SAndreas.Sandberg@ARM.com/* 212076Sanouk.vanlaer@arm.com * Copyright (c) 2014-2017 ARM Limited 310391SAndreas.Sandberg@ARM.com * All rights reserved 410391SAndreas.Sandberg@ARM.com * 510391SAndreas.Sandberg@ARM.com * The license below extends only to copyright in the software and shall 610391SAndreas.Sandberg@ARM.com * not be construed as granting a license to any other intellectual 710391SAndreas.Sandberg@ARM.com * property including but not limited to intellectual property relating 810391SAndreas.Sandberg@ARM.com * to a hardware implementation of the functionality of the software 910391SAndreas.Sandberg@ARM.com * licensed hereunder. You may use the software subject to the license 1010391SAndreas.Sandberg@ARM.com * terms below provided that you ensure that this notice is replicated 1110391SAndreas.Sandberg@ARM.com * unmodified and in its entirety in all distributions of the software, 1210391SAndreas.Sandberg@ARM.com * modified or unmodified, in source code or in binary form. 1310391SAndreas.Sandberg@ARM.com * 1410391SAndreas.Sandberg@ARM.com * Redistribution and use in source and binary forms, with or without 1510391SAndreas.Sandberg@ARM.com * modification, are permitted provided that the following conditions are 1610391SAndreas.Sandberg@ARM.com * met: redistributions of source code must retain the above copyright 1710391SAndreas.Sandberg@ARM.com * notice, this list of conditions and the following disclaimer; 1810391SAndreas.Sandberg@ARM.com * redistributions in binary form must reproduce the above copyright 1910391SAndreas.Sandberg@ARM.com * notice, this list of conditions and the following disclaimer in the 2010391SAndreas.Sandberg@ARM.com * documentation and/or other materials provided with the distribution; 2110391SAndreas.Sandberg@ARM.com * neither the name of the copyright holders nor the names of its 2210391SAndreas.Sandberg@ARM.com * contributors may be used to endorse or promote products derived from 2310391SAndreas.Sandberg@ARM.com * this software without specific prior written permission. 2410391SAndreas.Sandberg@ARM.com * 2510391SAndreas.Sandberg@ARM.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2610391SAndreas.Sandberg@ARM.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2710391SAndreas.Sandberg@ARM.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2810391SAndreas.Sandberg@ARM.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2910391SAndreas.Sandberg@ARM.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3010391SAndreas.Sandberg@ARM.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3110391SAndreas.Sandberg@ARM.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3210391SAndreas.Sandberg@ARM.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3310391SAndreas.Sandberg@ARM.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3410391SAndreas.Sandberg@ARM.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3510391SAndreas.Sandberg@ARM.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3610391SAndreas.Sandberg@ARM.com * 3710391SAndreas.Sandberg@ARM.com * Authors: Andreas Sandberg 3810391SAndreas.Sandberg@ARM.com */ 3910391SAndreas.Sandberg@ARM.com 4011793Sbrandon.potter@amd.com#include "dev/virtio/fs9p.hh" 4111793Sbrandon.potter@amd.com 4211793Sbrandon.potter@amd.com#include <fcntl.h> 4311793Sbrandon.potter@amd.com#include <netdb.h> 4410391SAndreas.Sandberg@ARM.com#include <netinet/in.h> 4510391SAndreas.Sandberg@ARM.com#include <sys/socket.h> 4610391SAndreas.Sandberg@ARM.com#include <sys/types.h> 4712076Sanouk.vanlaer@arm.com#include <sys/un.h> 4810391SAndreas.Sandberg@ARM.com#include <unistd.h> 4910391SAndreas.Sandberg@ARM.com 5012076Sanouk.vanlaer@arm.com#include <fstream> 5112076Sanouk.vanlaer@arm.com 5212076Sanouk.vanlaer@arm.com#include "base/output.hh" 5310391SAndreas.Sandberg@ARM.com#include "debug/VIO9P.hh" 5410391SAndreas.Sandberg@ARM.com#include "debug/VIO9PData.hh" 5510391SAndreas.Sandberg@ARM.com#include "params/VirtIO9PBase.hh" 5610391SAndreas.Sandberg@ARM.com#include "params/VirtIO9PDiod.hh" 5710391SAndreas.Sandberg@ARM.com#include "params/VirtIO9PProxy.hh" 5810391SAndreas.Sandberg@ARM.com#include "params/VirtIO9PSocket.hh" 5910391SAndreas.Sandberg@ARM.com#include "sim/system.hh" 6010391SAndreas.Sandberg@ARM.com 6110391SAndreas.Sandberg@ARM.comstruct P9MsgInfo { 6210391SAndreas.Sandberg@ARM.com P9MsgInfo(P9MsgType _type, std::string _name) 6310391SAndreas.Sandberg@ARM.com : type(_type), name(_name) {} 6410391SAndreas.Sandberg@ARM.com 6510391SAndreas.Sandberg@ARM.com P9MsgType type; 6610391SAndreas.Sandberg@ARM.com std::string name; 6710391SAndreas.Sandberg@ARM.com}; 6810391SAndreas.Sandberg@ARM.com 6910391SAndreas.Sandberg@ARM.comtypedef std::map<P9MsgType, P9MsgInfo> P9MsgInfoMap; 7010391SAndreas.Sandberg@ARM.com 7110391SAndreas.Sandberg@ARM.com#define P9MSG(type, name) \ 7210391SAndreas.Sandberg@ARM.com { (type), P9MsgInfo((type), "T" # name ) }, \ 7310391SAndreas.Sandberg@ARM.com { (type + 1), P9MsgInfo((type + 1), "R" # name ) } 7410391SAndreas.Sandberg@ARM.com 7510391SAndreas.Sandberg@ARM.comstatic const P9MsgInfoMap p9_msg_info { 7610391SAndreas.Sandberg@ARM.com P9MSG(6, LERROR), 7710391SAndreas.Sandberg@ARM.com P9MSG(8, STATFS), 7810391SAndreas.Sandberg@ARM.com P9MSG(12, LOPEN), 7910391SAndreas.Sandberg@ARM.com P9MSG(14, LCREATE), 8010391SAndreas.Sandberg@ARM.com P9MSG(16, SYMLINK), 8110391SAndreas.Sandberg@ARM.com P9MSG(18, MKNOD), 8210391SAndreas.Sandberg@ARM.com P9MSG(20, RENAME), 8310391SAndreas.Sandberg@ARM.com P9MSG(22, READLINK), 8410391SAndreas.Sandberg@ARM.com P9MSG(24, GETATTR), 8510391SAndreas.Sandberg@ARM.com P9MSG(26, SETATTR), 8610391SAndreas.Sandberg@ARM.com P9MSG(30, XATTRWALK), 8710391SAndreas.Sandberg@ARM.com P9MSG(32, XATTRCREATE), 8810391SAndreas.Sandberg@ARM.com P9MSG(40, READDIR), 8910391SAndreas.Sandberg@ARM.com P9MSG(50, FSYNC), 9010391SAndreas.Sandberg@ARM.com P9MSG(52, LOCK), 9110391SAndreas.Sandberg@ARM.com P9MSG(54, GETLOCK), 9210391SAndreas.Sandberg@ARM.com P9MSG(70, LINK), 9310391SAndreas.Sandberg@ARM.com P9MSG(72, MKDIR), 9410391SAndreas.Sandberg@ARM.com P9MSG(74, RENAMEAT), 9510391SAndreas.Sandberg@ARM.com P9MSG(76, UNLINKAT), 9610391SAndreas.Sandberg@ARM.com P9MSG(100, VERSION), 9710391SAndreas.Sandberg@ARM.com P9MSG(102, AUTH), 9810391SAndreas.Sandberg@ARM.com P9MSG(104, ATTACH), 9910391SAndreas.Sandberg@ARM.com P9MSG(106, ERROR), 10010391SAndreas.Sandberg@ARM.com P9MSG(108, FLUSH), 10110391SAndreas.Sandberg@ARM.com P9MSG(110, WALK), 10210391SAndreas.Sandberg@ARM.com P9MSG(112, OPEN), 10310391SAndreas.Sandberg@ARM.com P9MSG(114, CREATE), 10410391SAndreas.Sandberg@ARM.com P9MSG(116, READ), 10510391SAndreas.Sandberg@ARM.com P9MSG(118, WRITE), 10610391SAndreas.Sandberg@ARM.com P9MSG(120, CLUNK), 10710391SAndreas.Sandberg@ARM.com P9MSG(122, REMOVE), 10810391SAndreas.Sandberg@ARM.com P9MSG(124, STAT), 10910391SAndreas.Sandberg@ARM.com P9MSG(126, WSTAT), 11010391SAndreas.Sandberg@ARM.com}; 11110391SAndreas.Sandberg@ARM.com 11210391SAndreas.Sandberg@ARM.com#undef P9MSG 11310391SAndreas.Sandberg@ARM.com 11410391SAndreas.Sandberg@ARM.comVirtIO9PBase::VirtIO9PBase(Params *params) 11510391SAndreas.Sandberg@ARM.com : VirtIODeviceBase(params, ID_9P, 11610391SAndreas.Sandberg@ARM.com sizeof(Config) + params->tag.size(), 11710391SAndreas.Sandberg@ARM.com F_MOUNT_TAG), 11810391SAndreas.Sandberg@ARM.com queue(params->system->physProxy, params->queueSize, *this) 11910391SAndreas.Sandberg@ARM.com{ 12010391SAndreas.Sandberg@ARM.com config.reset((Config *) 12110391SAndreas.Sandberg@ARM.com operator new(configSize)); 12210391SAndreas.Sandberg@ARM.com config->len = htov_legacy(params->tag.size()); 12310391SAndreas.Sandberg@ARM.com memcpy(config->tag, params->tag.c_str(), params->tag.size()); 12410391SAndreas.Sandberg@ARM.com 12510391SAndreas.Sandberg@ARM.com registerQueue(queue); 12610391SAndreas.Sandberg@ARM.com} 12710391SAndreas.Sandberg@ARM.com 12810391SAndreas.Sandberg@ARM.com 12910391SAndreas.Sandberg@ARM.comVirtIO9PBase::~VirtIO9PBase() 13010391SAndreas.Sandberg@ARM.com{ 13110391SAndreas.Sandberg@ARM.com} 13210391SAndreas.Sandberg@ARM.com 13310391SAndreas.Sandberg@ARM.comvoid 13410391SAndreas.Sandberg@ARM.comVirtIO9PBase::readConfig(PacketPtr pkt, Addr cfgOffset) 13510391SAndreas.Sandberg@ARM.com{ 13610391SAndreas.Sandberg@ARM.com readConfigBlob(pkt, cfgOffset, (uint8_t *)config.get()); 13710391SAndreas.Sandberg@ARM.com} 13810391SAndreas.Sandberg@ARM.com 13910391SAndreas.Sandberg@ARM.comvoid 14010391SAndreas.Sandberg@ARM.comVirtIO9PBase::FSQueue::onNotifyDescriptor(VirtDescriptor *desc) 14110391SAndreas.Sandberg@ARM.com{ 14210391SAndreas.Sandberg@ARM.com DPRINTF(VIO9P, "Got input data descriptor (len: %i)\n", desc->size()); 14310391SAndreas.Sandberg@ARM.com DPRINTF(VIO9P, "\tPending transactions: %i\n", parent.pendingTransactions.size()); 14410391SAndreas.Sandberg@ARM.com 14510391SAndreas.Sandberg@ARM.com P9MsgHeader header; 14610391SAndreas.Sandberg@ARM.com desc->chainRead(0, (uint8_t *)&header, sizeof(header)); 14710391SAndreas.Sandberg@ARM.com header = p9toh(header); 14810391SAndreas.Sandberg@ARM.com 14910391SAndreas.Sandberg@ARM.com uint8_t data[header.len - sizeof(header)]; 15010391SAndreas.Sandberg@ARM.com desc->chainRead(sizeof(header), data, sizeof(data)); 15110391SAndreas.Sandberg@ARM.com 15210391SAndreas.Sandberg@ARM.com // Keep track of pending transactions 15310391SAndreas.Sandberg@ARM.com parent.pendingTransactions[header.tag] = desc; 15410391SAndreas.Sandberg@ARM.com 15510391SAndreas.Sandberg@ARM.com DPRINTF(VIO9P, "recvTMsg\n"); 15610391SAndreas.Sandberg@ARM.com parent.dumpMsg(header, data, sizeof(data)); 15710391SAndreas.Sandberg@ARM.com 15810391SAndreas.Sandberg@ARM.com // Notify device of message 15910391SAndreas.Sandberg@ARM.com parent.recvTMsg(header, data, sizeof(data)); 16010391SAndreas.Sandberg@ARM.com} 16110391SAndreas.Sandberg@ARM.com 16210391SAndreas.Sandberg@ARM.comvoid 16310391SAndreas.Sandberg@ARM.comVirtIO9PBase::sendRMsg(const P9MsgHeader &header, const uint8_t *data, size_t size) 16410391SAndreas.Sandberg@ARM.com{ 16510391SAndreas.Sandberg@ARM.com DPRINTF(VIO9P, "Sending RMsg\n"); 16610391SAndreas.Sandberg@ARM.com dumpMsg(header, data, size); 16710391SAndreas.Sandberg@ARM.com DPRINTF(VIO9P, "\tPending transactions: %i\n", pendingTransactions.size()); 16810391SAndreas.Sandberg@ARM.com assert(header.len >= sizeof(header)); 16910391SAndreas.Sandberg@ARM.com 17010391SAndreas.Sandberg@ARM.com VirtDescriptor *main_desc(pendingTransactions[header.tag]); 17110391SAndreas.Sandberg@ARM.com pendingTransactions.erase(header.tag); 17210391SAndreas.Sandberg@ARM.com 17310391SAndreas.Sandberg@ARM.com // Find the first output descriptor 17410391SAndreas.Sandberg@ARM.com VirtDescriptor *out_desc(main_desc); 17510391SAndreas.Sandberg@ARM.com while (out_desc && !out_desc->isOutgoing()) 17610391SAndreas.Sandberg@ARM.com out_desc = out_desc->next(); 17710391SAndreas.Sandberg@ARM.com if (!out_desc) 17810391SAndreas.Sandberg@ARM.com panic("sendRMsg: Framing error, no output descriptor.\n"); 17910391SAndreas.Sandberg@ARM.com 18010391SAndreas.Sandberg@ARM.com P9MsgHeader header_out(htop9(header)); 18110391SAndreas.Sandberg@ARM.com header_out.len = htop9(sizeof(P9MsgHeader) + size); 18210391SAndreas.Sandberg@ARM.com 18310391SAndreas.Sandberg@ARM.com out_desc->chainWrite(0, (uint8_t *)&header_out, sizeof(header_out)); 18410391SAndreas.Sandberg@ARM.com out_desc->chainWrite(sizeof(header_out), data, size); 18510391SAndreas.Sandberg@ARM.com 18610391SAndreas.Sandberg@ARM.com queue.produceDescriptor(main_desc, sizeof(P9MsgHeader) + size); 18710391SAndreas.Sandberg@ARM.com kick(); 18810391SAndreas.Sandberg@ARM.com} 18910391SAndreas.Sandberg@ARM.com 19010391SAndreas.Sandberg@ARM.comvoid 19110391SAndreas.Sandberg@ARM.comVirtIO9PBase::dumpMsg(const P9MsgHeader &header, const uint8_t *data, size_t size) 19210391SAndreas.Sandberg@ARM.com{ 19310391SAndreas.Sandberg@ARM.com#ifndef NDEBUG 19410391SAndreas.Sandberg@ARM.com if (!DTRACE(VIO9P)) 19510391SAndreas.Sandberg@ARM.com return; 19610391SAndreas.Sandberg@ARM.com 19710391SAndreas.Sandberg@ARM.com const P9MsgInfoMap::const_iterator it_msg(p9_msg_info.find(header.type)); 19810391SAndreas.Sandberg@ARM.com if (it_msg != p9_msg_info.cend()) { 19910391SAndreas.Sandberg@ARM.com const P9MsgInfo &info(it_msg->second); 20010391SAndreas.Sandberg@ARM.com DPRINTF(VIO9P, "P9Msg[len = %i, type = %s (%i), tag = %i]\n", 20110391SAndreas.Sandberg@ARM.com header.len, info.name, header.type, header.tag); 20210391SAndreas.Sandberg@ARM.com } else { 20310391SAndreas.Sandberg@ARM.com DPRINTF(VIO9P, "P9Msg[len = %i, type = Unknown (%i), tag = %i]\n", 20410391SAndreas.Sandberg@ARM.com header.len, header.type, header.tag); 20510391SAndreas.Sandberg@ARM.com } 20610391SAndreas.Sandberg@ARM.com DDUMP(VIO9PData, data, size); 20710391SAndreas.Sandberg@ARM.com#endif 20810391SAndreas.Sandberg@ARM.com} 20910391SAndreas.Sandberg@ARM.com 21010391SAndreas.Sandberg@ARM.com 21110391SAndreas.Sandberg@ARM.comVirtIO9PProxy::VirtIO9PProxy(Params *params) 21211204Ssascha.bischoff@ARM.com : VirtIO9PBase(params), deviceUsed(false) 21310391SAndreas.Sandberg@ARM.com{ 21410391SAndreas.Sandberg@ARM.com} 21510391SAndreas.Sandberg@ARM.com 21610391SAndreas.Sandberg@ARM.comVirtIO9PProxy::~VirtIO9PProxy() 21710391SAndreas.Sandberg@ARM.com{ 21810391SAndreas.Sandberg@ARM.com} 21910391SAndreas.Sandberg@ARM.com 22010391SAndreas.Sandberg@ARM.com 22110391SAndreas.Sandberg@ARM.comvoid 22211204Ssascha.bischoff@ARM.comVirtIO9PProxy::serialize(CheckpointOut &cp) const 22310391SAndreas.Sandberg@ARM.com{ 22411204Ssascha.bischoff@ARM.com if (deviceUsed) { 22511204Ssascha.bischoff@ARM.com warn("Serializing VirtIO9Base device after device has been used. It is " 22611204Ssascha.bischoff@ARM.com "likely that state will be lost, and that the device will cease " 22711204Ssascha.bischoff@ARM.com "to work!"); 22811204Ssascha.bischoff@ARM.com } 22911204Ssascha.bischoff@ARM.com SERIALIZE_SCALAR(deviceUsed); 23011204Ssascha.bischoff@ARM.com 23111204Ssascha.bischoff@ARM.com VirtIO9PBase::serialize(cp); 23210391SAndreas.Sandberg@ARM.com} 23310391SAndreas.Sandberg@ARM.com 23410391SAndreas.Sandberg@ARM.comvoid 23510905Sandreas.sandberg@arm.comVirtIO9PProxy::unserialize(CheckpointIn &cp) 23610391SAndreas.Sandberg@ARM.com{ 23711204Ssascha.bischoff@ARM.com UNSERIALIZE_SCALAR(deviceUsed); 23811204Ssascha.bischoff@ARM.com 23911204Ssascha.bischoff@ARM.com if (deviceUsed) { 24011204Ssascha.bischoff@ARM.com warn("Unserializing VirtIO9Base device after device has been used. It is " 24111204Ssascha.bischoff@ARM.com "likely that state has been lost, and that the device will cease " 24211204Ssascha.bischoff@ARM.com "to work!"); 24311204Ssascha.bischoff@ARM.com } 24411204Ssascha.bischoff@ARM.com VirtIO9PBase::unserialize(cp); 24510391SAndreas.Sandberg@ARM.com} 24610391SAndreas.Sandberg@ARM.com 24710391SAndreas.Sandberg@ARM.com 24810391SAndreas.Sandberg@ARM.comvoid 24910391SAndreas.Sandberg@ARM.comVirtIO9PProxy::recvTMsg(const P9MsgHeader &header, 25010391SAndreas.Sandberg@ARM.com const uint8_t *data, size_t size) 25110391SAndreas.Sandberg@ARM.com{ 25211204Ssascha.bischoff@ARM.com deviceUsed = true; 25310391SAndreas.Sandberg@ARM.com assert(header.len == sizeof(header) + size); 25410391SAndreas.Sandberg@ARM.com // While technically not needed, we send the packet as one 25510391SAndreas.Sandberg@ARM.com // contiguous segment to make some packet dissectors happy. 25610391SAndreas.Sandberg@ARM.com uint8_t out[header.len]; 25710391SAndreas.Sandberg@ARM.com P9MsgHeader header_out(htop9(header)); 25810391SAndreas.Sandberg@ARM.com memcpy(out, (uint8_t *)&header_out, sizeof(header_out)); 25910391SAndreas.Sandberg@ARM.com memcpy(out + sizeof(header_out), data, size); 26010391SAndreas.Sandberg@ARM.com writeAll(out, sizeof(header_out) + size); 26110391SAndreas.Sandberg@ARM.com} 26210391SAndreas.Sandberg@ARM.com 26310391SAndreas.Sandberg@ARM.comvoid 26410391SAndreas.Sandberg@ARM.comVirtIO9PProxy::serverDataReady() 26510391SAndreas.Sandberg@ARM.com{ 26610391SAndreas.Sandberg@ARM.com P9MsgHeader header; 26710391SAndreas.Sandberg@ARM.com readAll((uint8_t *)&header, sizeof(header)); 26810391SAndreas.Sandberg@ARM.com header = p9toh(header); 26910391SAndreas.Sandberg@ARM.com 27010391SAndreas.Sandberg@ARM.com const ssize_t payload_len(header.len - sizeof(header)); 27110391SAndreas.Sandberg@ARM.com if (payload_len < 0) 27210391SAndreas.Sandberg@ARM.com panic("Payload length is negative!\n"); 27310391SAndreas.Sandberg@ARM.com uint8_t data[payload_len]; 27410391SAndreas.Sandberg@ARM.com readAll(data, payload_len); 27510391SAndreas.Sandberg@ARM.com 27610391SAndreas.Sandberg@ARM.com sendRMsg(header, data, payload_len); 27710391SAndreas.Sandberg@ARM.com} 27810391SAndreas.Sandberg@ARM.com 27910391SAndreas.Sandberg@ARM.com 28010391SAndreas.Sandberg@ARM.comvoid 28110391SAndreas.Sandberg@ARM.comVirtIO9PProxy::readAll(uint8_t *data, size_t len) 28210391SAndreas.Sandberg@ARM.com{ 28310391SAndreas.Sandberg@ARM.com while (len) { 28410391SAndreas.Sandberg@ARM.com ssize_t ret; 28510391SAndreas.Sandberg@ARM.com while ((ret = read(data, len)) == -EAGAIN) 28610391SAndreas.Sandberg@ARM.com ; 28710391SAndreas.Sandberg@ARM.com if (ret < 0) 28810391SAndreas.Sandberg@ARM.com panic("readAll: Read failed: %i\n", -ret); 28910391SAndreas.Sandberg@ARM.com 29010391SAndreas.Sandberg@ARM.com len -= ret; 29110391SAndreas.Sandberg@ARM.com data += ret; 29210391SAndreas.Sandberg@ARM.com } 29310391SAndreas.Sandberg@ARM.com} 29410391SAndreas.Sandberg@ARM.com 29510391SAndreas.Sandberg@ARM.comvoid 29610391SAndreas.Sandberg@ARM.comVirtIO9PProxy::writeAll(const uint8_t *data, size_t len) 29710391SAndreas.Sandberg@ARM.com{ 29810391SAndreas.Sandberg@ARM.com while (len) { 29910391SAndreas.Sandberg@ARM.com ssize_t ret; 30010391SAndreas.Sandberg@ARM.com while ((ret = write(data, len)) == -EAGAIN) 30110391SAndreas.Sandberg@ARM.com ; 30210391SAndreas.Sandberg@ARM.com if (ret < 0) 30310391SAndreas.Sandberg@ARM.com panic("writeAll: write failed: %i\n", -ret); 30410391SAndreas.Sandberg@ARM.com 30510391SAndreas.Sandberg@ARM.com len -= ret; 30610391SAndreas.Sandberg@ARM.com data += ret; 30710391SAndreas.Sandberg@ARM.com } 30810391SAndreas.Sandberg@ARM.com} 30910391SAndreas.Sandberg@ARM.com 31010391SAndreas.Sandberg@ARM.com 31110391SAndreas.Sandberg@ARM.com 31210391SAndreas.Sandberg@ARM.comVirtIO9PDiod::VirtIO9PDiod(Params *params) 31310391SAndreas.Sandberg@ARM.com : VirtIO9PProxy(params), 31410559Sandreas.hansson@arm.com fd_to_diod(-1), fd_from_diod(-1), diod_pid(-1) 31510391SAndreas.Sandberg@ARM.com{ 31610391SAndreas.Sandberg@ARM.com} 31710391SAndreas.Sandberg@ARM.com 31810391SAndreas.Sandberg@ARM.comVirtIO9PDiod::~VirtIO9PDiod() 31910391SAndreas.Sandberg@ARM.com{ 32010391SAndreas.Sandberg@ARM.com} 32110391SAndreas.Sandberg@ARM.com 32210391SAndreas.Sandberg@ARM.comvoid 32310391SAndreas.Sandberg@ARM.comVirtIO9PDiod::startup() 32410391SAndreas.Sandberg@ARM.com{ 32510391SAndreas.Sandberg@ARM.com startDiod(); 32610391SAndreas.Sandberg@ARM.com dataEvent.reset(new DiodDataEvent(*this, fd_from_diod, POLLIN)); 32710391SAndreas.Sandberg@ARM.com pollQueue.schedule(dataEvent.get()); 32810391SAndreas.Sandberg@ARM.com} 32910391SAndreas.Sandberg@ARM.com 33010391SAndreas.Sandberg@ARM.comvoid 33110391SAndreas.Sandberg@ARM.comVirtIO9PDiod::startDiod() 33210391SAndreas.Sandberg@ARM.com{ 33310391SAndreas.Sandberg@ARM.com const Params *p(dynamic_cast<const Params *>(params())); 33410391SAndreas.Sandberg@ARM.com int pipe_rfd[2]; 33510391SAndreas.Sandberg@ARM.com int pipe_wfd[2]; 33610391SAndreas.Sandberg@ARM.com const int DIOD_RFD = 3; 33710391SAndreas.Sandberg@ARM.com const int DIOD_WFD = 4; 33810391SAndreas.Sandberg@ARM.com 33910391SAndreas.Sandberg@ARM.com const char *diod(p->diod.c_str()); 34010391SAndreas.Sandberg@ARM.com 34112076Sanouk.vanlaer@arm.com DPRINTF(VIO9P, "Using diod at %s \n", p->diod.c_str()); 34212076Sanouk.vanlaer@arm.com 34310391SAndreas.Sandberg@ARM.com if (pipe(pipe_rfd) == -1 || pipe(pipe_wfd) == -1) 34410391SAndreas.Sandberg@ARM.com panic("Failed to create DIOD pipes: %i\n", errno); 34510391SAndreas.Sandberg@ARM.com 34610391SAndreas.Sandberg@ARM.com fd_to_diod = pipe_rfd[1]; 34710391SAndreas.Sandberg@ARM.com fd_from_diod = pipe_wfd[0]; 34810391SAndreas.Sandberg@ARM.com 34910391SAndreas.Sandberg@ARM.com diod_pid = fork(); 35010391SAndreas.Sandberg@ARM.com if (diod_pid == -1) { 35110391SAndreas.Sandberg@ARM.com panic("Fork failed: %i\n", errno); 35210391SAndreas.Sandberg@ARM.com } else if (diod_pid == 0) { 35310391SAndreas.Sandberg@ARM.com close(STDIN_FILENO); 35410391SAndreas.Sandberg@ARM.com 35510391SAndreas.Sandberg@ARM.com if (dup2(pipe_rfd[0], DIOD_RFD) == -1 || 35610391SAndreas.Sandberg@ARM.com dup2(pipe_wfd[1], DIOD_WFD) == -1) { 35710391SAndreas.Sandberg@ARM.com 35810391SAndreas.Sandberg@ARM.com panic("Failed to setup read/write pipes: %i\n", 35910391SAndreas.Sandberg@ARM.com errno); 36010391SAndreas.Sandberg@ARM.com } 36110391SAndreas.Sandberg@ARM.com 36212076Sanouk.vanlaer@arm.com // Create Unix domain socket 36312076Sanouk.vanlaer@arm.com int socket_id = socket(AF_UNIX, SOCK_STREAM, 0); 36412076Sanouk.vanlaer@arm.com if (socket_id == -1) { 36512076Sanouk.vanlaer@arm.com panic("Socket creation failed %i \n", errno); 36612076Sanouk.vanlaer@arm.com } 36712076Sanouk.vanlaer@arm.com // Bind the socket to a path which will not be read 36812076Sanouk.vanlaer@arm.com struct sockaddr_un socket_address; 36912076Sanouk.vanlaer@arm.com memset(&socket_address, 0, sizeof(struct sockaddr_un)); 37012076Sanouk.vanlaer@arm.com socket_address.sun_family = AF_UNIX; 37112076Sanouk.vanlaer@arm.com 37212076Sanouk.vanlaer@arm.com const std::string socket_path = simout.resolve(p->socketPath); 37312076Sanouk.vanlaer@arm.com fatal_if(!OutputDirectory::isAbsolute(socket_path), "Please make the" \ 37412076Sanouk.vanlaer@arm.com " output directory an absolute path, else diod will fail!\n"); 37512076Sanouk.vanlaer@arm.com 37612076Sanouk.vanlaer@arm.com // Prevent overflow in strcpy 37712076Sanouk.vanlaer@arm.com fatal_if(sizeof(socket_address.sun_path) <= socket_path.length(), 37812076Sanouk.vanlaer@arm.com "Incorrect length of socket path"); 37912076Sanouk.vanlaer@arm.com strncpy(socket_address.sun_path, socket_path.c_str(), 38012076Sanouk.vanlaer@arm.com sizeof(socket_address.sun_path)); 38112076Sanouk.vanlaer@arm.com 38212076Sanouk.vanlaer@arm.com if (bind(socket_id, (struct sockaddr*) &socket_address, 38312076Sanouk.vanlaer@arm.com sizeof(struct sockaddr_un)) == -1){ 38412076Sanouk.vanlaer@arm.com perror("Socket binding"); 38512076Sanouk.vanlaer@arm.com panic("Socket binding to %i failed - most likely the output dir" \ 38612076Sanouk.vanlaer@arm.com " and hence unused socket already exists \n", socket_id); 38712076Sanouk.vanlaer@arm.com } 38812076Sanouk.vanlaer@arm.com 38910391SAndreas.Sandberg@ARM.com execlp(diod, diod, 39010391SAndreas.Sandberg@ARM.com "-f", // start in foreground 39110391SAndreas.Sandberg@ARM.com "-r", "3", // setup read FD 39210391SAndreas.Sandberg@ARM.com "-w", "4", // setup write FD 39310391SAndreas.Sandberg@ARM.com "-e", p->root.c_str(), // path to export 39410391SAndreas.Sandberg@ARM.com "-n", // disable security 39510391SAndreas.Sandberg@ARM.com "-S", // squash all users 39612076Sanouk.vanlaer@arm.com "-l", socket_path.c_str(), // pass the socket 39710391SAndreas.Sandberg@ARM.com (char *)NULL); 39812076Sanouk.vanlaer@arm.com perror("Starting DIOD"); 39912076Sanouk.vanlaer@arm.com panic("Failed to execute diod to %s: %i\n",socket_path, errno); 40010391SAndreas.Sandberg@ARM.com } else { 40110391SAndreas.Sandberg@ARM.com close(pipe_rfd[0]); 40210391SAndreas.Sandberg@ARM.com close(pipe_wfd[1]); 40310391SAndreas.Sandberg@ARM.com } 40410391SAndreas.Sandberg@ARM.com 40510391SAndreas.Sandberg@ARM.com#undef DIOD_RFD 40610391SAndreas.Sandberg@ARM.com#undef DIOD_WFD 40710391SAndreas.Sandberg@ARM.com} 40810391SAndreas.Sandberg@ARM.com 40910391SAndreas.Sandberg@ARM.comssize_t 41010391SAndreas.Sandberg@ARM.comVirtIO9PDiod::read(uint8_t *data, size_t len) 41110391SAndreas.Sandberg@ARM.com{ 41210391SAndreas.Sandberg@ARM.com assert(fd_from_diod != -1); 41310391SAndreas.Sandberg@ARM.com const int ret(::read(fd_from_diod, (void *)data, len)); 41410391SAndreas.Sandberg@ARM.com return ret < 0 ? -errno : ret; 41510391SAndreas.Sandberg@ARM.com} 41610391SAndreas.Sandberg@ARM.com 41710391SAndreas.Sandberg@ARM.comssize_t 41810391SAndreas.Sandberg@ARM.comVirtIO9PDiod::write(const uint8_t *data, size_t len) 41910391SAndreas.Sandberg@ARM.com{ 42010391SAndreas.Sandberg@ARM.com assert(fd_to_diod != -1); 42110391SAndreas.Sandberg@ARM.com const int ret(::write(fd_to_diod, (const void *)data, len)); 42210391SAndreas.Sandberg@ARM.com return ret < 0 ? -errno : ret; 42310391SAndreas.Sandberg@ARM.com} 42410391SAndreas.Sandberg@ARM.com 42510391SAndreas.Sandberg@ARM.comvoid 42610391SAndreas.Sandberg@ARM.comVirtIO9PDiod::DiodDataEvent::process(int revent) 42710391SAndreas.Sandberg@ARM.com{ 42810391SAndreas.Sandberg@ARM.com parent.serverDataReady(); 42910391SAndreas.Sandberg@ARM.com} 43010391SAndreas.Sandberg@ARM.com 43110391SAndreas.Sandberg@ARM.comVirtIO9PDiod * 43210391SAndreas.Sandberg@ARM.comVirtIO9PDiodParams::create() 43310391SAndreas.Sandberg@ARM.com{ 43410391SAndreas.Sandberg@ARM.com return new VirtIO9PDiod(this); 43510391SAndreas.Sandberg@ARM.com} 43610391SAndreas.Sandberg@ARM.com 43710391SAndreas.Sandberg@ARM.com 43810391SAndreas.Sandberg@ARM.com 43910391SAndreas.Sandberg@ARM.com 44010391SAndreas.Sandberg@ARM.comVirtIO9PSocket::VirtIO9PSocket(Params *params) 44110391SAndreas.Sandberg@ARM.com : VirtIO9PProxy(params), fdSocket(-1) 44210391SAndreas.Sandberg@ARM.com{ 44310391SAndreas.Sandberg@ARM.com} 44410391SAndreas.Sandberg@ARM.com 44510391SAndreas.Sandberg@ARM.comVirtIO9PSocket::~VirtIO9PSocket() 44610391SAndreas.Sandberg@ARM.com{ 44710391SAndreas.Sandberg@ARM.com} 44810391SAndreas.Sandberg@ARM.com 44910391SAndreas.Sandberg@ARM.comvoid 45010391SAndreas.Sandberg@ARM.comVirtIO9PSocket::startup() 45110391SAndreas.Sandberg@ARM.com{ 45210391SAndreas.Sandberg@ARM.com connectSocket(); 45310391SAndreas.Sandberg@ARM.com dataEvent.reset(new SocketDataEvent(*this, fdSocket, POLLIN)); 45410391SAndreas.Sandberg@ARM.com pollQueue.schedule(dataEvent.get()); 45510391SAndreas.Sandberg@ARM.com} 45610391SAndreas.Sandberg@ARM.com 45710391SAndreas.Sandberg@ARM.comvoid 45810391SAndreas.Sandberg@ARM.comVirtIO9PSocket::connectSocket() 45910391SAndreas.Sandberg@ARM.com{ 46010391SAndreas.Sandberg@ARM.com const Params &p(dynamic_cast<const Params &>(*params())); 46110391SAndreas.Sandberg@ARM.com 46210391SAndreas.Sandberg@ARM.com int ret; 46310391SAndreas.Sandberg@ARM.com struct addrinfo hints, *result; 46410391SAndreas.Sandberg@ARM.com memset(&hints, 0, sizeof(hints)); 46510391SAndreas.Sandberg@ARM.com hints.ai_family = AF_UNSPEC; 46610391SAndreas.Sandberg@ARM.com hints.ai_socktype = SOCK_STREAM; 46710391SAndreas.Sandberg@ARM.com hints.ai_flags = 0; 46810391SAndreas.Sandberg@ARM.com hints.ai_protocol = 0; 46910391SAndreas.Sandberg@ARM.com 47010391SAndreas.Sandberg@ARM.com if ((ret = getaddrinfo(p.server.c_str(), p.port.c_str(), 47110391SAndreas.Sandberg@ARM.com &hints, &result)) != 0) 47210391SAndreas.Sandberg@ARM.com panic("getaddrinfo: %s\n", gai_strerror(ret)); 47310391SAndreas.Sandberg@ARM.com 47410391SAndreas.Sandberg@ARM.com DPRINTF(VIO9P, "Connecting to 9p server '%s'.\n", p.server); 47510391SAndreas.Sandberg@ARM.com for (struct addrinfo *rp = result; rp; rp = rp->ai_next) { 47610391SAndreas.Sandberg@ARM.com fdSocket = socket(rp->ai_family, rp->ai_socktype, 47710391SAndreas.Sandberg@ARM.com rp->ai_protocol); 47810391SAndreas.Sandberg@ARM.com if (fdSocket == -1) { 47910391SAndreas.Sandberg@ARM.com continue; 48010391SAndreas.Sandberg@ARM.com } else if (connect(fdSocket, rp->ai_addr, rp->ai_addrlen) != -1) { 48110391SAndreas.Sandberg@ARM.com break; 48210391SAndreas.Sandberg@ARM.com } else { 48310391SAndreas.Sandberg@ARM.com close(fdSocket); 48410391SAndreas.Sandberg@ARM.com fdSocket = -1; 48510391SAndreas.Sandberg@ARM.com } 48610391SAndreas.Sandberg@ARM.com } 48710391SAndreas.Sandberg@ARM.com 48810391SAndreas.Sandberg@ARM.com freeaddrinfo(result); 48910391SAndreas.Sandberg@ARM.com 49010391SAndreas.Sandberg@ARM.com if (fdSocket == -1) 49110391SAndreas.Sandberg@ARM.com panic("Failed to connect to 9p server (%s:%s)", p.server, p.port); 49210391SAndreas.Sandberg@ARM.com} 49310391SAndreas.Sandberg@ARM.com 49410391SAndreas.Sandberg@ARM.comvoid 49510391SAndreas.Sandberg@ARM.comVirtIO9PSocket::socketDisconnect() 49610391SAndreas.Sandberg@ARM.com{ 49710391SAndreas.Sandberg@ARM.com panic("9P Socket disconnected!\n"); 49810391SAndreas.Sandberg@ARM.com} 49910391SAndreas.Sandberg@ARM.com 50010391SAndreas.Sandberg@ARM.comssize_t 50110391SAndreas.Sandberg@ARM.comVirtIO9PSocket::read(uint8_t *data, size_t len) 50210391SAndreas.Sandberg@ARM.com{ 50310391SAndreas.Sandberg@ARM.com assert(fdSocket != -1); 50410391SAndreas.Sandberg@ARM.com int ret; 50510391SAndreas.Sandberg@ARM.com 50610391SAndreas.Sandberg@ARM.com ret = ::recv(fdSocket, (void *)data, len, 0); 50710391SAndreas.Sandberg@ARM.com if (ret == 0) 50810391SAndreas.Sandberg@ARM.com socketDisconnect(); 50910391SAndreas.Sandberg@ARM.com 51010391SAndreas.Sandberg@ARM.com return ret < 0 ? -errno : ret; 51110391SAndreas.Sandberg@ARM.com} 51210391SAndreas.Sandberg@ARM.com 51310391SAndreas.Sandberg@ARM.comssize_t 51410391SAndreas.Sandberg@ARM.comVirtIO9PSocket::write(const uint8_t *data, size_t len) 51510391SAndreas.Sandberg@ARM.com{ 51610391SAndreas.Sandberg@ARM.com assert(fdSocket != -1); 51710391SAndreas.Sandberg@ARM.com int ret(::send(fdSocket, (const void *)data, len, 0)); 51810391SAndreas.Sandberg@ARM.com return ret < 0 ? -errno : ret; 51910391SAndreas.Sandberg@ARM.com} 52010391SAndreas.Sandberg@ARM.com 52110391SAndreas.Sandberg@ARM.comvoid 52210391SAndreas.Sandberg@ARM.comVirtIO9PSocket::SocketDataEvent::process(int revent) 52310391SAndreas.Sandberg@ARM.com{ 52410391SAndreas.Sandberg@ARM.com parent.serverDataReady(); 52510391SAndreas.Sandberg@ARM.com} 52610391SAndreas.Sandberg@ARM.com 52710391SAndreas.Sandberg@ARM.com 52810391SAndreas.Sandberg@ARM.comVirtIO9PSocket * 52910391SAndreas.Sandberg@ARM.comVirtIO9PSocketParams::create() 53010391SAndreas.Sandberg@ARM.com{ 53110391SAndreas.Sandberg@ARM.com return new VirtIO9PSocket(this); 53210391SAndreas.Sandberg@ARM.com} 533