syscall_emul.cc revision 13644
1360SN/A/* 21458SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 3360SN/A * All rights reserved. 4360SN/A * 5360SN/A * Redistribution and use in source and binary forms, with or without 6360SN/A * modification, are permitted provided that the following conditions are 7360SN/A * met: redistributions of source code must retain the above copyright 8360SN/A * notice, this list of conditions and the following disclaimer; 9360SN/A * redistributions in binary form must reproduce the above copyright 10360SN/A * notice, this list of conditions and the following disclaimer in the 11360SN/A * documentation and/or other materials provided with the distribution; 12360SN/A * neither the name of the copyright holders nor the names of its 13360SN/A * contributors may be used to endorse or promote products derived from 14360SN/A * this software without specific prior written permission. 15360SN/A * 16360SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17360SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18360SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19360SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20360SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21360SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22360SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23360SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24360SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25360SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26360SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 292665Ssaidi@eecs.umich.edu * Ali Saidi 30360SN/A */ 31360SN/A 3211793Sbrandon.potter@amd.com#include "sim/syscall_emul.hh" 3311793Sbrandon.potter@amd.com 342093SN/A#include <fcntl.h> 3513479Santhony.gutierrez@amd.com#include <sys/syscall.h> 36360SN/A#include <unistd.h> 37360SN/A 3811911SBrandon.Potter@amd.com#include <csignal> 396712Snate@binkert.org#include <iostream> 4013031Sbrandon.potter@amd.com#include <mutex> 41360SN/A#include <string> 42360SN/A 437680Sgblack@eecs.umich.edu#include "arch/utility.hh" 442474SN/A#include "base/chunk_generator.hh" 45360SN/A#include "base/trace.hh" 466658Snate@binkert.org#include "config/the_isa.hh" 472680Sktlim@umich.edu#include "cpu/thread_context.hh" 4812716Smichael.lebeane@amd.com#include "dev/net/dist_iface.hh" 492474SN/A#include "mem/page_table.hh" 5013031Sbrandon.potter@amd.com#include "sim/byteswap.hh" 51360SN/A#include "sim/process.hh" 528229Snate@binkert.org#include "sim/sim_exit.hh" 5311794Sbrandon.potter@amd.com#include "sim/syscall_debug_macros.hh" 5411794Sbrandon.potter@amd.com#include "sim/syscall_desc.hh" 556029Ssteve.reinhardt@amd.com#include "sim/system.hh" 56360SN/A 57360SN/Ausing namespace std; 582107SN/Ausing namespace TheISA; 59360SN/A 601450SN/ASyscallReturn 6111851Sbrandon.potter@amd.comunimplementedFunc(SyscallDesc *desc, int callnum, Process *process, 622680Sktlim@umich.edu ThreadContext *tc) 63360SN/A{ 6411794Sbrandon.potter@amd.com fatal("syscall %s (#%d) unimplemented.", desc->name(), callnum); 652484SN/A 662484SN/A return 1; 67360SN/A} 68360SN/A 69360SN/A 701450SN/ASyscallReturn 7111851Sbrandon.potter@amd.comignoreFunc(SyscallDesc *desc, int callnum, Process *process, 722680Sktlim@umich.edu ThreadContext *tc) 73360SN/A{ 7411794Sbrandon.potter@amd.com if (desc->needWarning()) { 7511794Sbrandon.potter@amd.com warn("ignoring syscall %s(...)%s", desc->name(), desc->warnOnce() ? 7611794Sbrandon.potter@amd.com "\n (further warnings will be suppressed)" : ""); 7710831Ssteve.reinhardt@amd.com } 78360SN/A 798149SChris.Emmons@ARM.com return 0; 808149SChris.Emmons@ARM.com} 818149SChris.Emmons@ARM.com 8211886Sbrandon.potter@amd.comstatic void 8311911SBrandon.Potter@amd.comexitFutexWake(ThreadContext *tc, Addr addr, uint64_t tgid) 8411886Sbrandon.potter@amd.com{ 8511911SBrandon.Potter@amd.com // Clear value at address pointed to by thread's childClearTID field. 8611911SBrandon.Potter@amd.com BufferArg ctidBuf(addr, sizeof(long)); 8711911SBrandon.Potter@amd.com long *ctid = (long *)ctidBuf.bufferPtr(); 8811911SBrandon.Potter@amd.com *ctid = 0; 8911911SBrandon.Potter@amd.com ctidBuf.copyOut(tc->getMemProxy()); 9011886Sbrandon.potter@amd.com 9111911SBrandon.Potter@amd.com FutexMap &futex_map = tc->getSystemPtr()->futexMap; 9211911SBrandon.Potter@amd.com // Wake one of the waiting threads. 9311911SBrandon.Potter@amd.com futex_map.wakeup(addr, tgid, 1); 9411911SBrandon.Potter@amd.com} 9511911SBrandon.Potter@amd.com 9611911SBrandon.Potter@amd.comstatic SyscallReturn 9711911SBrandon.Potter@amd.comexitImpl(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc, 9811911SBrandon.Potter@amd.com bool group) 9911911SBrandon.Potter@amd.com{ 10011911SBrandon.Potter@amd.com int index = 0; 10111911SBrandon.Potter@amd.com int status = p->getSyscallArg(tc, index); 10211911SBrandon.Potter@amd.com 10311911SBrandon.Potter@amd.com System *sys = tc->getSystemPtr(); 10411911SBrandon.Potter@amd.com 10511911SBrandon.Potter@amd.com if (group) 10611911SBrandon.Potter@amd.com *p->exitGroup = true; 10711911SBrandon.Potter@amd.com 10811911SBrandon.Potter@amd.com if (p->childClearTID) 10911911SBrandon.Potter@amd.com exitFutexWake(tc, p->childClearTID, p->tgid()); 11011911SBrandon.Potter@amd.com 11111911SBrandon.Potter@amd.com bool last_thread = true; 11211911SBrandon.Potter@amd.com Process *parent = nullptr, *tg_lead = nullptr; 11311911SBrandon.Potter@amd.com for (int i = 0; last_thread && i < sys->numContexts(); i++) { 11411911SBrandon.Potter@amd.com Process *walk; 11511911SBrandon.Potter@amd.com if (!(walk = sys->threadContexts[i]->getProcessPtr())) 11611911SBrandon.Potter@amd.com continue; 11711911SBrandon.Potter@amd.com 11811911SBrandon.Potter@amd.com /** 11911911SBrandon.Potter@amd.com * Threads in a thread group require special handing. For instance, 12011911SBrandon.Potter@amd.com * we send the SIGCHLD signal so that it appears that it came from 12111911SBrandon.Potter@amd.com * the head of the group. We also only delete file descriptors if 12211911SBrandon.Potter@amd.com * we are the last thread in the thread group. 12311911SBrandon.Potter@amd.com */ 12411911SBrandon.Potter@amd.com if (walk->pid() == p->tgid()) 12511911SBrandon.Potter@amd.com tg_lead = walk; 12611911SBrandon.Potter@amd.com 12713644Sqtt2@cornell.edu if ((sys->threadContexts[i]->status() != ThreadContext::Halted) && 12813644Sqtt2@cornell.edu (sys->threadContexts[i]->status() != ThreadContext::Halting) && 12913644Sqtt2@cornell.edu (walk != p)) { 13011911SBrandon.Potter@amd.com /** 13111911SBrandon.Potter@amd.com * Check if we share thread group with the pointer; this denotes 13211911SBrandon.Potter@amd.com * that we are not the last thread active in the thread group. 13311911SBrandon.Potter@amd.com * Note that setting this to false also prevents further 13411911SBrandon.Potter@amd.com * iterations of the loop. 13511911SBrandon.Potter@amd.com */ 13613644Sqtt2@cornell.edu if (walk->tgid() == p->tgid()) { 13713644Sqtt2@cornell.edu /** 13813644Sqtt2@cornell.edu * If p is trying to exit_group and both walk and p are in 13913644Sqtt2@cornell.edu * the same thread group (i.e., sharing the same tgid), 14013644Sqtt2@cornell.edu * we need to halt walk's thread context. After all threads 14113644Sqtt2@cornell.edu * except p are halted, p becomes the last thread in the 14213644Sqtt2@cornell.edu * group. 14313644Sqtt2@cornell.edu * 14413644Sqtt2@cornell.edu * If p is not doing exit_group and there exists another 14513644Sqtt2@cornell.edu * active thread context in the group, last_thread is 14613644Sqtt2@cornell.edu * set to false to prevent the parent thread from killing 14713644Sqtt2@cornell.edu * all threads in the group. 14813644Sqtt2@cornell.edu */ 14913644Sqtt2@cornell.edu if (*(p->exitGroup)) { 15013644Sqtt2@cornell.edu sys->threadContexts[i]->halt(); 15113644Sqtt2@cornell.edu } else { 15213644Sqtt2@cornell.edu last_thread = false; 15313644Sqtt2@cornell.edu } 15413644Sqtt2@cornell.edu } 15511911SBrandon.Potter@amd.com 15611911SBrandon.Potter@amd.com /** 15711911SBrandon.Potter@amd.com * A corner case exists which involves execve(). After execve(), 15811911SBrandon.Potter@amd.com * the execve will enable SIGCHLD in the process. The problem 15911911SBrandon.Potter@amd.com * occurs when the exiting process is the root process in the 16011911SBrandon.Potter@amd.com * system; there is no parent to receive the signal. We obviate 16111911SBrandon.Potter@amd.com * this problem by setting the root process' ppid to zero in the 16211911SBrandon.Potter@amd.com * Python configuration files. We really should handle the 16311911SBrandon.Potter@amd.com * root/execve specific case more gracefully. 16411911SBrandon.Potter@amd.com */ 16511911SBrandon.Potter@amd.com if (*p->sigchld && (p->ppid() != 0) && (walk->pid() == p->ppid())) 16611911SBrandon.Potter@amd.com parent = walk; 16711886Sbrandon.potter@amd.com } 16811886Sbrandon.potter@amd.com } 16911911SBrandon.Potter@amd.com 17011911SBrandon.Potter@amd.com if (last_thread) { 17111911SBrandon.Potter@amd.com if (parent) { 17211911SBrandon.Potter@amd.com assert(tg_lead); 17311911SBrandon.Potter@amd.com sys->signalList.push_back(BasicSignal(tg_lead, parent, SIGCHLD)); 17411911SBrandon.Potter@amd.com } 17511911SBrandon.Potter@amd.com 17611911SBrandon.Potter@amd.com /** 17711911SBrandon.Potter@amd.com * Run though FD array of the exiting process and close all file 17811911SBrandon.Potter@amd.com * descriptors except for the standard file descriptors. 17911911SBrandon.Potter@amd.com * (The standard file descriptors are shared with gem5.) 18011911SBrandon.Potter@amd.com */ 18111911SBrandon.Potter@amd.com for (int i = 0; i < p->fds->getSize(); i++) { 18211911SBrandon.Potter@amd.com if ((*p->fds)[i]) 18311911SBrandon.Potter@amd.com p->fds->closeFDEntry(i); 18411911SBrandon.Potter@amd.com } 18511911SBrandon.Potter@amd.com } 18611911SBrandon.Potter@amd.com 18711911SBrandon.Potter@amd.com tc->halt(); 18813644Sqtt2@cornell.edu 18913644Sqtt2@cornell.edu /** 19013644Sqtt2@cornell.edu * check to see if there is no more active thread in the system. If so, 19113644Sqtt2@cornell.edu * exit the simulation loop 19213644Sqtt2@cornell.edu */ 19313644Sqtt2@cornell.edu int activeContexts = 0; 19413644Sqtt2@cornell.edu for (auto &system: sys->systemList) 19513644Sqtt2@cornell.edu activeContexts += system->numRunningContexts(); 19613644Sqtt2@cornell.edu 19713644Sqtt2@cornell.edu if (activeContexts == 0) { 19813644Sqtt2@cornell.edu /** 19913644Sqtt2@cornell.edu * Even though we are terminating the final thread context, dist-gem5 20013644Sqtt2@cornell.edu * requires the simulation to remain active and provide 20113644Sqtt2@cornell.edu * synchronization messages to the switch process. So we just halt 20213644Sqtt2@cornell.edu * the last thread context and return. The simulation will be 20313644Sqtt2@cornell.edu * terminated by dist-gem5 in a coordinated manner once all nodes 20413644Sqtt2@cornell.edu * have signaled their readiness to exit. For non dist-gem5 20513644Sqtt2@cornell.edu * simulations, readyToExit() always returns true. 20613644Sqtt2@cornell.edu */ 20713644Sqtt2@cornell.edu if (!DistIface::readyToExit(0)) { 20813644Sqtt2@cornell.edu return status; 20913644Sqtt2@cornell.edu } 21013644Sqtt2@cornell.edu 21113644Sqtt2@cornell.edu exitSimLoop("exiting with last active thread context", status & 0xff); 21213644Sqtt2@cornell.edu return status; 21313644Sqtt2@cornell.edu } 21413644Sqtt2@cornell.edu 21511911SBrandon.Potter@amd.com return status; 21611886Sbrandon.potter@amd.com} 2178149SChris.Emmons@ARM.com 2188149SChris.Emmons@ARM.comSyscallReturn 21911886Sbrandon.potter@amd.comexitFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 220360SN/A{ 22111911SBrandon.Potter@amd.com return exitImpl(desc, callnum, p, tc, false); 222360SN/A} 223360SN/A 2241450SN/ASyscallReturn 22511911SBrandon.Potter@amd.comexitGroupFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 2266109Ssanchezd@stanford.edu{ 22711911SBrandon.Potter@amd.com return exitImpl(desc, callnum, p, tc, true); 2286109Ssanchezd@stanford.edu} 2296109Ssanchezd@stanford.edu 2306109Ssanchezd@stanford.eduSyscallReturn 23111851Sbrandon.potter@amd.comgetpagesizeFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 232360SN/A{ 23310318Sandreas.hansson@arm.com return (int)PageBytes; 234360SN/A} 235360SN/A 236360SN/A 2371450SN/ASyscallReturn 23811851Sbrandon.potter@amd.combrkFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 239360SN/A{ 240360SN/A // change brk addr to first arg 2416701Sgblack@eecs.umich.edu int index = 0; 2426701Sgblack@eecs.umich.edu Addr new_brk = p->getSyscallArg(tc, index); 2435748SSteve.Reinhardt@amd.com 24411905SBrandon.Potter@amd.com std::shared_ptr<MemState> mem_state = p->memState; 24511905SBrandon.Potter@amd.com Addr brk_point = mem_state->getBrkPoint(); 24611905SBrandon.Potter@amd.com 2475748SSteve.Reinhardt@amd.com // in Linux at least, brk(0) returns the current break value 2485748SSteve.Reinhardt@amd.com // (note that the syscall and the glibc function have different behavior) 2495748SSteve.Reinhardt@amd.com if (new_brk == 0) 25011905SBrandon.Potter@amd.com return brk_point; 2515748SSteve.Reinhardt@amd.com 25211905SBrandon.Potter@amd.com if (new_brk > brk_point) { 2535748SSteve.Reinhardt@amd.com // might need to allocate some new pages 25411905SBrandon.Potter@amd.com for (ChunkGenerator gen(brk_point, 25511905SBrandon.Potter@amd.com new_brk - brk_point, 25610318Sandreas.hansson@arm.com PageBytes); !gen.done(); gen.next()) { 2575748SSteve.Reinhardt@amd.com if (!p->pTable->translate(gen.addr())) 25810318Sandreas.hansson@arm.com p->allocateMem(roundDown(gen.addr(), PageBytes), PageBytes); 2596687Stjones1@inf.ed.ac.uk 2606687Stjones1@inf.ed.ac.uk // if the address is already there, zero it out 2616687Stjones1@inf.ed.ac.uk else { 26211905SBrandon.Potter@amd.com uint8_t zero = 0; 2638852Sandreas.hansson@arm.com SETranslatingPortProxy &tp = tc->getMemProxy(); 2646687Stjones1@inf.ed.ac.uk 2656687Stjones1@inf.ed.ac.uk // split non-page aligned accesses 26610318Sandreas.hansson@arm.com Addr next_page = roundUp(gen.addr(), PageBytes); 2676687Stjones1@inf.ed.ac.uk uint32_t size_needed = next_page - gen.addr(); 2688852Sandreas.hansson@arm.com tp.memsetBlob(gen.addr(), zero, size_needed); 26910318Sandreas.hansson@arm.com if (gen.addr() + PageBytes > next_page && 2706687Stjones1@inf.ed.ac.uk next_page < new_brk && 27111906SBrandon.Potter@amd.com p->pTable->translate(next_page)) { 27210318Sandreas.hansson@arm.com size_needed = PageBytes - size_needed; 2738852Sandreas.hansson@arm.com tp.memsetBlob(next_page, zero, size_needed); 2746687Stjones1@inf.ed.ac.uk } 2756687Stjones1@inf.ed.ac.uk } 2762474SN/A } 2771450SN/A } 2785748SSteve.Reinhardt@amd.com 27911905SBrandon.Potter@amd.com mem_state->setBrkPoint(new_brk); 28011380Salexandru.dutu@amd.com DPRINTF_SYSCALL(Verbose, "brk: break point changed to: %#X\n", 28111905SBrandon.Potter@amd.com mem_state->getBrkPoint()); 28211905SBrandon.Potter@amd.com return mem_state->getBrkPoint(); 283360SN/A} 284360SN/A 28511886Sbrandon.potter@amd.comSyscallReturn 28611886Sbrandon.potter@amd.comsetTidAddressFunc(SyscallDesc *desc, int callnum, Process *process, 28711886Sbrandon.potter@amd.com ThreadContext *tc) 28811886Sbrandon.potter@amd.com{ 28911886Sbrandon.potter@amd.com int index = 0; 29011886Sbrandon.potter@amd.com uint64_t tidPtr = process->getSyscallArg(tc, index); 29111886Sbrandon.potter@amd.com 29211886Sbrandon.potter@amd.com process->childClearTID = tidPtr; 29311886Sbrandon.potter@amd.com return process->pid(); 29411886Sbrandon.potter@amd.com} 295360SN/A 2961450SN/ASyscallReturn 29711851Sbrandon.potter@amd.comcloseFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 298360SN/A{ 2996701Sgblack@eecs.umich.edu int index = 0; 30010931Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 30110931Sbrandon.potter@amd.com 30211856Sbrandon.potter@amd.com return p->fds->closeFDEntry(tgt_fd); 303360SN/A} 304360SN/A 3051450SN/ASyscallReturn 30611851Sbrandon.potter@amd.comlseekFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 307360SN/A{ 3086701Sgblack@eecs.umich.edu int index = 0; 30910931Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 3106701Sgblack@eecs.umich.edu uint64_t offs = p->getSyscallArg(tc, index); 3116701Sgblack@eecs.umich.edu int whence = p->getSyscallArg(tc, index); 312360SN/A 31311856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 31411856Sbrandon.potter@amd.com if (!ffdp) 31510931Sbrandon.potter@amd.com return -EBADF; 31611856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 31710931Sbrandon.potter@amd.com 31810931Sbrandon.potter@amd.com off_t result = lseek(sim_fd, offs, whence); 319360SN/A 3201458SN/A return (result == (off_t)-1) ? -errno : result; 321360SN/A} 322360SN/A 323360SN/A 3241450SN/ASyscallReturn 32511851Sbrandon.potter@amd.com_llseekFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 3264118Sgblack@eecs.umich.edu{ 3276701Sgblack@eecs.umich.edu int index = 0; 32810931Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 3296701Sgblack@eecs.umich.edu uint64_t offset_high = p->getSyscallArg(tc, index); 3306701Sgblack@eecs.umich.edu uint32_t offset_low = p->getSyscallArg(tc, index); 3316701Sgblack@eecs.umich.edu Addr result_ptr = p->getSyscallArg(tc, index); 3326701Sgblack@eecs.umich.edu int whence = p->getSyscallArg(tc, index); 3334118Sgblack@eecs.umich.edu 33411856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 33511856Sbrandon.potter@amd.com if (!ffdp) 33610931Sbrandon.potter@amd.com return -EBADF; 33711856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 33810931Sbrandon.potter@amd.com 3394118Sgblack@eecs.umich.edu uint64_t offset = (offset_high << 32) | offset_low; 3404118Sgblack@eecs.umich.edu 34110931Sbrandon.potter@amd.com uint64_t result = lseek(sim_fd, offset, whence); 3424118Sgblack@eecs.umich.edu result = TheISA::htog(result); 3434118Sgblack@eecs.umich.edu 34411379Sbrandon.potter@amd.com if (result == (off_t)-1) 3454118Sgblack@eecs.umich.edu return -errno; 34611379Sbrandon.potter@amd.com // Assuming that the size of loff_t is 64 bits on the target platform 34711379Sbrandon.potter@amd.com BufferArg result_buf(result_ptr, sizeof(result)); 34811379Sbrandon.potter@amd.com memcpy(result_buf.bufferPtr(), &result, sizeof(result)); 34911379Sbrandon.potter@amd.com result_buf.copyOut(tc->getMemProxy()); 35011379Sbrandon.potter@amd.com return 0; 3514118Sgblack@eecs.umich.edu} 3524118Sgblack@eecs.umich.edu 3534118Sgblack@eecs.umich.edu 3544118Sgblack@eecs.umich.eduSyscallReturn 35511851Sbrandon.potter@amd.communmapFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 356360SN/A{ 35711383Sbrandon.potter@amd.com // With mmap more fully implemented, it might be worthwhile to bite 35811383Sbrandon.potter@amd.com // the bullet and implement munmap. Should allow us to reuse simulated 35911383Sbrandon.potter@amd.com // memory. 3601458SN/A return 0; 361360SN/A} 362360SN/A 363360SN/A 364360SN/Aconst char *hostname = "m5.eecs.umich.edu"; 365360SN/A 3661450SN/ASyscallReturn 36711851Sbrandon.potter@amd.comgethostnameFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 368360SN/A{ 3696701Sgblack@eecs.umich.edu int index = 0; 37011906SBrandon.Potter@amd.com Addr buf_ptr = p->getSyscallArg(tc, index); 3716701Sgblack@eecs.umich.edu int name_len = p->getSyscallArg(tc, index); 37211906SBrandon.Potter@amd.com BufferArg name(buf_ptr, name_len); 373360SN/A 374360SN/A strncpy((char *)name.bufferPtr(), hostname, name_len); 375360SN/A 3768706Sandreas.hansson@arm.com name.copyOut(tc->getMemProxy()); 377360SN/A 3781458SN/A return 0; 379360SN/A} 380360SN/A 3811450SN/ASyscallReturn 38211851Sbrandon.potter@amd.comgetcwdFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 3835513SMichael.Adler@intel.com{ 3845513SMichael.Adler@intel.com int result = 0; 3856731Svince@csl.cornell.edu int index = 0; 38611906SBrandon.Potter@amd.com Addr buf_ptr = p->getSyscallArg(tc, index); 3876701Sgblack@eecs.umich.edu unsigned long size = p->getSyscallArg(tc, index); 38811906SBrandon.Potter@amd.com BufferArg buf(buf_ptr, size); 3895513SMichael.Adler@intel.com 3905513SMichael.Adler@intel.com // Is current working directory defined? 3915513SMichael.Adler@intel.com string cwd = p->getcwd(); 3925513SMichael.Adler@intel.com if (!cwd.empty()) { 3935513SMichael.Adler@intel.com if (cwd.length() >= size) { 3945513SMichael.Adler@intel.com // Buffer too small 3955513SMichael.Adler@intel.com return -ERANGE; 3965513SMichael.Adler@intel.com } 3975513SMichael.Adler@intel.com strncpy((char *)buf.bufferPtr(), cwd.c_str(), size); 3985513SMichael.Adler@intel.com result = cwd.length(); 39910955Sdavid.hashe@amd.com } else { 40011856Sbrandon.potter@amd.com if (getcwd((char *)buf.bufferPtr(), size)) { 4015513SMichael.Adler@intel.com result = strlen((char *)buf.bufferPtr()); 40210955Sdavid.hashe@amd.com } else { 4035513SMichael.Adler@intel.com result = -1; 4045513SMichael.Adler@intel.com } 4055513SMichael.Adler@intel.com } 4065513SMichael.Adler@intel.com 4078706Sandreas.hansson@arm.com buf.copyOut(tc->getMemProxy()); 4085513SMichael.Adler@intel.com 4095513SMichael.Adler@intel.com return (result == -1) ? -errno : result; 4105513SMichael.Adler@intel.com} 4115513SMichael.Adler@intel.com 41210203SAli.Saidi@ARM.comSyscallReturn 41311851Sbrandon.potter@amd.comreadlinkFunc(SyscallDesc *desc, int callnum, Process *process, 41411851Sbrandon.potter@amd.com ThreadContext *tc) 41510203SAli.Saidi@ARM.com{ 41610203SAli.Saidi@ARM.com return readlinkFunc(desc, callnum, process, tc, 0); 41710203SAli.Saidi@ARM.com} 4185513SMichael.Adler@intel.com 4195513SMichael.Adler@intel.comSyscallReturn 42011851Sbrandon.potter@amd.comreadlinkFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc, 42111851Sbrandon.potter@amd.com int index) 4225513SMichael.Adler@intel.com{ 4235513SMichael.Adler@intel.com string path; 4245513SMichael.Adler@intel.com 4258852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 42610223Ssteve.reinhardt@amd.com return -EFAULT; 4275513SMichael.Adler@intel.com 4285513SMichael.Adler@intel.com // Adjust path for current working directory 4295513SMichael.Adler@intel.com path = p->fullPath(path); 4305513SMichael.Adler@intel.com 43111906SBrandon.Potter@amd.com Addr buf_ptr = p->getSyscallArg(tc, index); 4326701Sgblack@eecs.umich.edu size_t bufsiz = p->getSyscallArg(tc, index); 4336701Sgblack@eecs.umich.edu 43411906SBrandon.Potter@amd.com BufferArg buf(buf_ptr, bufsiz); 4355513SMichael.Adler@intel.com 43610955Sdavid.hashe@amd.com int result = -1; 43710955Sdavid.hashe@amd.com if (path != "/proc/self/exe") { 43810955Sdavid.hashe@amd.com result = readlink(path.c_str(), (char *)buf.bufferPtr(), bufsiz); 43910955Sdavid.hashe@amd.com } else { 44011140Sjthestness@gmail.com // Emulate readlink() called on '/proc/self/exe' should return the 44111140Sjthestness@gmail.com // absolute path of the binary running in the simulated system (the 44211851Sbrandon.potter@amd.com // Process' executable). It is possible that using this path in 44311140Sjthestness@gmail.com // the simulated system will result in unexpected behavior if: 44411140Sjthestness@gmail.com // 1) One binary runs another (e.g., -c time -o "my_binary"), and 44511140Sjthestness@gmail.com // called binary calls readlink(). 44611140Sjthestness@gmail.com // 2) The host's full path to the running benchmark changes from one 44711140Sjthestness@gmail.com // simulation to another. This can result in different simulated 44811140Sjthestness@gmail.com // performance since the simulated system will process the binary 44911140Sjthestness@gmail.com // path differently, even if the binary itself does not change. 45011140Sjthestness@gmail.com 45111140Sjthestness@gmail.com // Get the absolute canonical path to the running application 45211140Sjthestness@gmail.com char real_path[PATH_MAX]; 45311140Sjthestness@gmail.com char *check_real_path = realpath(p->progName(), real_path); 45411140Sjthestness@gmail.com if (!check_real_path) { 45511140Sjthestness@gmail.com fatal("readlink('/proc/self/exe') unable to resolve path to " 45611140Sjthestness@gmail.com "executable: %s", p->progName()); 45711140Sjthestness@gmail.com } 45811140Sjthestness@gmail.com strncpy((char*)buf.bufferPtr(), real_path, bufsiz); 45911140Sjthestness@gmail.com size_t real_path_len = strlen(real_path); 46011140Sjthestness@gmail.com if (real_path_len > bufsiz) { 46110955Sdavid.hashe@amd.com // readlink will truncate the contents of the 46210955Sdavid.hashe@amd.com // path to ensure it is no more than bufsiz 46310955Sdavid.hashe@amd.com result = bufsiz; 46410955Sdavid.hashe@amd.com } else { 46511140Sjthestness@gmail.com result = real_path_len; 46610955Sdavid.hashe@amd.com } 46711140Sjthestness@gmail.com 46811140Sjthestness@gmail.com // Issue a warning about potential unexpected results 46911140Sjthestness@gmail.com warn_once("readlink() called on '/proc/self/exe' may yield unexpected " 47011140Sjthestness@gmail.com "results in various settings.\n Returning '%s'\n", 47111140Sjthestness@gmail.com (char*)buf.bufferPtr()); 47210955Sdavid.hashe@amd.com } 4735513SMichael.Adler@intel.com 4748706Sandreas.hansson@arm.com buf.copyOut(tc->getMemProxy()); 4755513SMichael.Adler@intel.com 4765513SMichael.Adler@intel.com return (result == -1) ? -errno : result; 4775513SMichael.Adler@intel.com} 4785513SMichael.Adler@intel.com 4795513SMichael.Adler@intel.comSyscallReturn 48011851Sbrandon.potter@amd.comunlinkFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 481511SN/A{ 48210633Smichaelupton@gmail.com return unlinkHelper(desc, num, p, tc, 0); 48310633Smichaelupton@gmail.com} 48410633Smichaelupton@gmail.com 48510633Smichaelupton@gmail.comSyscallReturn 48611851Sbrandon.potter@amd.comunlinkHelper(SyscallDesc *desc, int num, Process *p, ThreadContext *tc, 48711851Sbrandon.potter@amd.com int index) 48810633Smichaelupton@gmail.com{ 4891706SN/A string path; 490360SN/A 4918852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 49210223Ssteve.reinhardt@amd.com return -EFAULT; 493511SN/A 4943669Sbinkertn@umich.edu path = p->fullPath(path); 4953669Sbinkertn@umich.edu 496511SN/A int result = unlink(path.c_str()); 4971458SN/A return (result == -1) ? -errno : result; 498511SN/A} 499511SN/A 50012795Smattdsinclair@gmail.comSyscallReturn 50112795Smattdsinclair@gmail.comlinkFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 50212795Smattdsinclair@gmail.com{ 50312795Smattdsinclair@gmail.com string path; 50412795Smattdsinclair@gmail.com string new_path; 50512795Smattdsinclair@gmail.com 50612795Smattdsinclair@gmail.com int index = 0; 50712795Smattdsinclair@gmail.com auto &virt_mem = tc->getMemProxy(); 50812795Smattdsinclair@gmail.com if (!virt_mem.tryReadString(path, p->getSyscallArg(tc, index))) 50912795Smattdsinclair@gmail.com return -EFAULT; 51012795Smattdsinclair@gmail.com if (!virt_mem.tryReadString(new_path, p->getSyscallArg(tc, index))) 51112795Smattdsinclair@gmail.com return -EFAULT; 51212795Smattdsinclair@gmail.com 51312795Smattdsinclair@gmail.com path = p->fullPath(path); 51412795Smattdsinclair@gmail.com new_path = p->fullPath(new_path); 51512795Smattdsinclair@gmail.com 51612795Smattdsinclair@gmail.com int result = link(path.c_str(), new_path.c_str()); 51712795Smattdsinclair@gmail.com return (result == -1) ? -errno : result; 51812795Smattdsinclair@gmail.com} 5195513SMichael.Adler@intel.com 5205513SMichael.Adler@intel.comSyscallReturn 52112796Smattdsinclair@gmail.comsymlinkFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 52212796Smattdsinclair@gmail.com{ 52312796Smattdsinclair@gmail.com string path; 52412796Smattdsinclair@gmail.com string new_path; 52512796Smattdsinclair@gmail.com 52612796Smattdsinclair@gmail.com int index = 0; 52712796Smattdsinclair@gmail.com auto &virt_mem = tc->getMemProxy(); 52812796Smattdsinclair@gmail.com if (!virt_mem.tryReadString(path, p->getSyscallArg(tc, index))) 52912796Smattdsinclair@gmail.com return -EFAULT; 53012796Smattdsinclair@gmail.com if (!virt_mem.tryReadString(new_path, p->getSyscallArg(tc, index))) 53112796Smattdsinclair@gmail.com return -EFAULT; 53212796Smattdsinclair@gmail.com 53312796Smattdsinclair@gmail.com path = p->fullPath(path); 53412796Smattdsinclair@gmail.com new_path = p->fullPath(new_path); 53512796Smattdsinclair@gmail.com 53612796Smattdsinclair@gmail.com int result = symlink(path.c_str(), new_path.c_str()); 53712796Smattdsinclair@gmail.com return (result == -1) ? -errno : result; 53812796Smattdsinclair@gmail.com} 53912796Smattdsinclair@gmail.com 54012796Smattdsinclair@gmail.comSyscallReturn 54111851Sbrandon.potter@amd.commkdirFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 5425513SMichael.Adler@intel.com{ 5435513SMichael.Adler@intel.com string path; 5445513SMichael.Adler@intel.com 5456701Sgblack@eecs.umich.edu int index = 0; 5468852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 54710223Ssteve.reinhardt@amd.com return -EFAULT; 5485513SMichael.Adler@intel.com 5495513SMichael.Adler@intel.com // Adjust path for current working directory 5505513SMichael.Adler@intel.com path = p->fullPath(path); 5515513SMichael.Adler@intel.com 5526701Sgblack@eecs.umich.edu mode_t mode = p->getSyscallArg(tc, index); 5535513SMichael.Adler@intel.com 5545513SMichael.Adler@intel.com int result = mkdir(path.c_str(), mode); 5555513SMichael.Adler@intel.com return (result == -1) ? -errno : result; 5565513SMichael.Adler@intel.com} 5575513SMichael.Adler@intel.com 5581450SN/ASyscallReturn 55911851Sbrandon.potter@amd.comrenameFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 560511SN/A{ 5611706SN/A string old_name; 562511SN/A 5636701Sgblack@eecs.umich.edu int index = 0; 5648852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(old_name, p->getSyscallArg(tc, index))) 5651458SN/A return -EFAULT; 566511SN/A 5671706SN/A string new_name; 568511SN/A 5698852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(new_name, p->getSyscallArg(tc, index))) 5701458SN/A return -EFAULT; 571511SN/A 5723669Sbinkertn@umich.edu // Adjust path for current working directory 5733669Sbinkertn@umich.edu old_name = p->fullPath(old_name); 5743669Sbinkertn@umich.edu new_name = p->fullPath(new_name); 5753669Sbinkertn@umich.edu 5761706SN/A int64_t result = rename(old_name.c_str(), new_name.c_str()); 5771458SN/A return (result == -1) ? -errno : result; 578511SN/A} 579511SN/A 5801706SN/ASyscallReturn 58111851Sbrandon.potter@amd.comtruncateFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 5821706SN/A{ 5831706SN/A string path; 5841706SN/A 5856701Sgblack@eecs.umich.edu int index = 0; 5868852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 5871706SN/A return -EFAULT; 5881706SN/A 5896701Sgblack@eecs.umich.edu off_t length = p->getSyscallArg(tc, index); 5901706SN/A 5913669Sbinkertn@umich.edu // Adjust path for current working directory 5923669Sbinkertn@umich.edu path = p->fullPath(path); 5933669Sbinkertn@umich.edu 5941706SN/A int result = truncate(path.c_str(), length); 5951706SN/A return (result == -1) ? -errno : result; 5961706SN/A} 5971706SN/A 5981706SN/ASyscallReturn 59911856Sbrandon.potter@amd.comftruncateFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 6001706SN/A{ 6016701Sgblack@eecs.umich.edu int index = 0; 60211856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 60311856Sbrandon.potter@amd.com off_t length = p->getSyscallArg(tc, index); 6041706SN/A 60511856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 60611856Sbrandon.potter@amd.com if (!ffdp) 6071706SN/A return -EBADF; 60811856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 6091706SN/A 61010931Sbrandon.potter@amd.com int result = ftruncate(sim_fd, length); 6111706SN/A return (result == -1) ? -errno : result; 6121706SN/A} 6131999SN/A 6141999SN/ASyscallReturn 6156703Svince@csl.cornell.edutruncate64Func(SyscallDesc *desc, int num, 61611851Sbrandon.potter@amd.com Process *process, ThreadContext *tc) 6176703Svince@csl.cornell.edu{ 6186703Svince@csl.cornell.edu int index = 0; 6196703Svince@csl.cornell.edu string path; 6206703Svince@csl.cornell.edu 6218852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, process->getSyscallArg(tc, index))) 62211906SBrandon.Potter@amd.com return -EFAULT; 6236703Svince@csl.cornell.edu 6246744SAli.Saidi@arm.com int64_t length = process->getSyscallArg(tc, index, 64); 6256703Svince@csl.cornell.edu 6266703Svince@csl.cornell.edu // Adjust path for current working directory 6276703Svince@csl.cornell.edu path = process->fullPath(path); 6286703Svince@csl.cornell.edu 6296744SAli.Saidi@arm.com#if NO_STAT64 6306744SAli.Saidi@arm.com int result = truncate(path.c_str(), length); 6316744SAli.Saidi@arm.com#else 6326703Svince@csl.cornell.edu int result = truncate64(path.c_str(), length); 6336744SAli.Saidi@arm.com#endif 6346703Svince@csl.cornell.edu return (result == -1) ? -errno : result; 6356703Svince@csl.cornell.edu} 6366703Svince@csl.cornell.edu 6376703Svince@csl.cornell.eduSyscallReturn 63811856Sbrandon.potter@amd.comftruncate64Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 6396685Stjones1@inf.ed.ac.uk{ 6406701Sgblack@eecs.umich.edu int index = 0; 64111856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 64211856Sbrandon.potter@amd.com int64_t length = p->getSyscallArg(tc, index, 64); 6436685Stjones1@inf.ed.ac.uk 64411856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 64511856Sbrandon.potter@amd.com if (!ffdp) 6466685Stjones1@inf.ed.ac.uk return -EBADF; 64711856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 6486685Stjones1@inf.ed.ac.uk 6496744SAli.Saidi@arm.com#if NO_STAT64 65010931Sbrandon.potter@amd.com int result = ftruncate(sim_fd, length); 6516744SAli.Saidi@arm.com#else 65210931Sbrandon.potter@amd.com int result = ftruncate64(sim_fd, length); 6536744SAli.Saidi@arm.com#endif 6546685Stjones1@inf.ed.ac.uk return (result == -1) ? -errno : result; 6556685Stjones1@inf.ed.ac.uk} 6566685Stjones1@inf.ed.ac.uk 6576685Stjones1@inf.ed.ac.ukSyscallReturn 65811851Sbrandon.potter@amd.comumaskFunc(SyscallDesc *desc, int num, Process *process, ThreadContext *tc) 6595513SMichael.Adler@intel.com{ 6605513SMichael.Adler@intel.com // Letting the simulated program change the simulator's umask seems like 6615513SMichael.Adler@intel.com // a bad idea. Compromise by just returning the current umask but not 6625513SMichael.Adler@intel.com // changing anything. 6635513SMichael.Adler@intel.com mode_t oldMask = umask(0); 6645513SMichael.Adler@intel.com umask(oldMask); 6655521Snate@binkert.org return (int)oldMask; 6665513SMichael.Adler@intel.com} 6675513SMichael.Adler@intel.com 6685513SMichael.Adler@intel.comSyscallReturn 66911851Sbrandon.potter@amd.comchownFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 6701999SN/A{ 6711999SN/A string path; 6721999SN/A 6736701Sgblack@eecs.umich.edu int index = 0; 6748852Sandreas.hansson@arm.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 6751999SN/A return -EFAULT; 6761999SN/A 6771999SN/A /* XXX endianess */ 6786701Sgblack@eecs.umich.edu uint32_t owner = p->getSyscallArg(tc, index); 6791999SN/A uid_t hostOwner = owner; 6806701Sgblack@eecs.umich.edu uint32_t group = p->getSyscallArg(tc, index); 6811999SN/A gid_t hostGroup = group; 6821999SN/A 6833669Sbinkertn@umich.edu // Adjust path for current working directory 6843669Sbinkertn@umich.edu path = p->fullPath(path); 6853669Sbinkertn@umich.edu 6861999SN/A int result = chown(path.c_str(), hostOwner, hostGroup); 6871999SN/A return (result == -1) ? -errno : result; 6881999SN/A} 6891999SN/A 6901999SN/ASyscallReturn 69111856Sbrandon.potter@amd.comfchownFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 6921999SN/A{ 6936701Sgblack@eecs.umich.edu int index = 0; 69411856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 6951999SN/A 69611856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 69711856Sbrandon.potter@amd.com if (!ffdp) 6981999SN/A return -EBADF; 69911856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 7001999SN/A 7011999SN/A /* XXX endianess */ 70211856Sbrandon.potter@amd.com uint32_t owner = p->getSyscallArg(tc, index); 7031999SN/A uid_t hostOwner = owner; 70411856Sbrandon.potter@amd.com uint32_t group = p->getSyscallArg(tc, index); 7051999SN/A gid_t hostGroup = group; 7061999SN/A 70710931Sbrandon.potter@amd.com int result = fchown(sim_fd, hostOwner, hostGroup); 7081999SN/A return (result == -1) ? -errno : result; 7091999SN/A} 7102093SN/A 71111856Sbrandon.potter@amd.com/** 71211908SBrandon.Potter@amd.com * FIXME: The file description is not shared among file descriptors created 71311908SBrandon.Potter@amd.com * with dup. Really, it's difficult to maintain fields like file offset or 71411908SBrandon.Potter@amd.com * flags since an update to such a field won't be reflected in the metadata 71511908SBrandon.Potter@amd.com * for the fd entries that we maintain for checkpoint restoration. 71611856Sbrandon.potter@amd.com */ 7172093SN/ASyscallReturn 71811856Sbrandon.potter@amd.comdupFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 7193079Sstever@eecs.umich.edu{ 7206701Sgblack@eecs.umich.edu int index = 0; 72111856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 72210931Sbrandon.potter@amd.com 72311856Sbrandon.potter@amd.com auto old_hbfdp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[tgt_fd]); 72411856Sbrandon.potter@amd.com if (!old_hbfdp) 7253079Sstever@eecs.umich.edu return -EBADF; 72611856Sbrandon.potter@amd.com int sim_fd = old_hbfdp->getSimFD(); 7275282Srstrong@cs.ucsd.edu 72810781Snilay@cs.wisc.edu int result = dup(sim_fd); 72911908SBrandon.Potter@amd.com if (result == -1) 73011908SBrandon.Potter@amd.com return -errno; 73111856Sbrandon.potter@amd.com 73211908SBrandon.Potter@amd.com auto new_hbfdp = std::dynamic_pointer_cast<HBFDEntry>(old_hbfdp->clone()); 73311856Sbrandon.potter@amd.com new_hbfdp->setSimFD(result); 73411908SBrandon.Potter@amd.com new_hbfdp->setCOE(false); 73511908SBrandon.Potter@amd.com return p->fds->allocFD(new_hbfdp); 73611908SBrandon.Potter@amd.com} 73711856Sbrandon.potter@amd.com 73811908SBrandon.Potter@amd.comSyscallReturn 73911908SBrandon.Potter@amd.comdup2Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 74011908SBrandon.Potter@amd.com{ 74111908SBrandon.Potter@amd.com int index = 0; 74211908SBrandon.Potter@amd.com 74311908SBrandon.Potter@amd.com int old_tgt_fd = p->getSyscallArg(tc, index); 74411908SBrandon.Potter@amd.com auto old_hbp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[old_tgt_fd]); 74511908SBrandon.Potter@amd.com if (!old_hbp) 74611908SBrandon.Potter@amd.com return -EBADF; 74711908SBrandon.Potter@amd.com int old_sim_fd = old_hbp->getSimFD(); 74811908SBrandon.Potter@amd.com 74911908SBrandon.Potter@amd.com /** 75011908SBrandon.Potter@amd.com * We need a valid host file descriptor number to be able to pass into 75111908SBrandon.Potter@amd.com * the second parameter for dup2 (newfd), but we don't know what the 75211908SBrandon.Potter@amd.com * viable numbers are; we execute the open call to retrieve one. 75311908SBrandon.Potter@amd.com */ 75411908SBrandon.Potter@amd.com int res_fd = dup2(old_sim_fd, open("/dev/null", O_RDONLY)); 75511908SBrandon.Potter@amd.com if (res_fd == -1) 75611908SBrandon.Potter@amd.com return -errno; 75711908SBrandon.Potter@amd.com 75811908SBrandon.Potter@amd.com int new_tgt_fd = p->getSyscallArg(tc, index); 75911908SBrandon.Potter@amd.com auto new_hbp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[new_tgt_fd]); 76011908SBrandon.Potter@amd.com if (new_hbp) 76111908SBrandon.Potter@amd.com p->fds->closeFDEntry(new_tgt_fd); 76211908SBrandon.Potter@amd.com new_hbp = std::dynamic_pointer_cast<HBFDEntry>(old_hbp->clone()); 76311908SBrandon.Potter@amd.com new_hbp->setSimFD(res_fd); 76411908SBrandon.Potter@amd.com new_hbp->setCOE(false); 76511908SBrandon.Potter@amd.com 76611908SBrandon.Potter@amd.com return p->fds->allocFD(new_hbp); 7673079Sstever@eecs.umich.edu} 7683079Sstever@eecs.umich.edu 7693079Sstever@eecs.umich.eduSyscallReturn 77011856Sbrandon.potter@amd.comfcntlFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 7712093SN/A{ 77211875Sbrandon.potter@amd.com int arg; 7736701Sgblack@eecs.umich.edu int index = 0; 77411856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 77511875Sbrandon.potter@amd.com int cmd = p->getSyscallArg(tc, index); 7762093SN/A 77711856Sbrandon.potter@amd.com auto hbfdp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[tgt_fd]); 77811856Sbrandon.potter@amd.com if (!hbfdp) 7792093SN/A return -EBADF; 78011856Sbrandon.potter@amd.com int sim_fd = hbfdp->getSimFD(); 7812093SN/A 78211875Sbrandon.potter@amd.com int coe = hbfdp->getCOE(); 78311875Sbrandon.potter@amd.com 7842093SN/A switch (cmd) { 78511875Sbrandon.potter@amd.com case F_GETFD: 78611875Sbrandon.potter@amd.com return coe & FD_CLOEXEC; 7872093SN/A 78811875Sbrandon.potter@amd.com case F_SETFD: { 78911875Sbrandon.potter@amd.com arg = p->getSyscallArg(tc, index); 79011875Sbrandon.potter@amd.com arg ? hbfdp->setCOE(true) : hbfdp->setCOE(false); 7912093SN/A return 0; 79211875Sbrandon.potter@amd.com } 7932093SN/A 79411875Sbrandon.potter@amd.com // Rely on the host to maintain the file status flags for this file 79511875Sbrandon.potter@amd.com // description rather than maintain it ourselves. Admittedly, this 79611875Sbrandon.potter@amd.com // is suboptimal (and possibly error prone), but it is difficult to 79711875Sbrandon.potter@amd.com // maintain the flags by tracking them across the different descriptors 79811875Sbrandon.potter@amd.com // (that refer to this file description) caused by clone, dup, and 79911875Sbrandon.potter@amd.com // subsequent fcntls. 80011875Sbrandon.potter@amd.com case F_GETFL: 80111875Sbrandon.potter@amd.com case F_SETFL: { 80211875Sbrandon.potter@amd.com arg = p->getSyscallArg(tc, index); 80311875Sbrandon.potter@amd.com int rv = fcntl(sim_fd, cmd, arg); 80411875Sbrandon.potter@amd.com return (rv == -1) ? -errno : rv; 80511875Sbrandon.potter@amd.com } 8062093SN/A 8072093SN/A default: 80811875Sbrandon.potter@amd.com warn("fcntl: unsupported command %d\n", cmd); 8092093SN/A return 0; 8102093SN/A } 8112093SN/A} 8122093SN/A 8132238SN/ASyscallReturn 81411856Sbrandon.potter@amd.comfcntl64Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 8152687Sksewell@umich.edu{ 8166701Sgblack@eecs.umich.edu int index = 0; 81711856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 8182687Sksewell@umich.edu 81911856Sbrandon.potter@amd.com auto hbfdp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[tgt_fd]); 82011856Sbrandon.potter@amd.com if (!hbfdp) 8212687Sksewell@umich.edu return -EBADF; 82211856Sbrandon.potter@amd.com int sim_fd = hbfdp->getSimFD(); 8232687Sksewell@umich.edu 82411856Sbrandon.potter@amd.com int cmd = p->getSyscallArg(tc, index); 8252687Sksewell@umich.edu switch (cmd) { 8262687Sksewell@umich.edu case 33: //F_GETLK64 82710931Sbrandon.potter@amd.com warn("fcntl64(%d, F_GETLK64) not supported, error returned\n", tgt_fd); 8282687Sksewell@umich.edu return -EMFILE; 8292687Sksewell@umich.edu 8302687Sksewell@umich.edu case 34: // F_SETLK64 8312687Sksewell@umich.edu case 35: // F_SETLKW64 83210931Sbrandon.potter@amd.com warn("fcntl64(%d, F_SETLK(W)64) not supported, error returned\n", 83310931Sbrandon.potter@amd.com tgt_fd); 8342687Sksewell@umich.edu return -EMFILE; 8352687Sksewell@umich.edu 8362687Sksewell@umich.edu default: 8372687Sksewell@umich.edu // not sure if this is totally valid, but we'll pass it through 8382687Sksewell@umich.edu // to the underlying OS 83910931Sbrandon.potter@amd.com warn("fcntl64(%d, %d) passed through to host\n", tgt_fd, cmd); 84010931Sbrandon.potter@amd.com return fcntl(sim_fd, cmd); 8412687Sksewell@umich.edu } 8422687Sksewell@umich.edu} 8432687Sksewell@umich.edu 8442687Sksewell@umich.eduSyscallReturn 84511908SBrandon.Potter@amd.compipeImpl(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc, 84611908SBrandon.Potter@amd.com bool pseudoPipe) 8472238SN/A{ 84811908SBrandon.Potter@amd.com Addr tgt_addr = 0; 84911908SBrandon.Potter@amd.com if (!pseudoPipe) { 85011908SBrandon.Potter@amd.com int index = 0; 85111908SBrandon.Potter@amd.com tgt_addr = p->getSyscallArg(tc, index); 85211908SBrandon.Potter@amd.com } 85311908SBrandon.Potter@amd.com 85411856Sbrandon.potter@amd.com int sim_fds[2], tgt_fds[2]; 8552093SN/A 85611856Sbrandon.potter@amd.com int pipe_retval = pipe(sim_fds); 85711908SBrandon.Potter@amd.com if (pipe_retval == -1) 85811908SBrandon.Potter@amd.com return -errno; 8592238SN/A 86011856Sbrandon.potter@amd.com auto rend = PipeFDEntry::EndType::read; 86111856Sbrandon.potter@amd.com auto rpfd = std::make_shared<PipeFDEntry>(sim_fds[0], O_WRONLY, rend); 86211908SBrandon.Potter@amd.com tgt_fds[0] = p->fds->allocFD(rpfd); 8632238SN/A 86411856Sbrandon.potter@amd.com auto wend = PipeFDEntry::EndType::write; 86511856Sbrandon.potter@amd.com auto wpfd = std::make_shared<PipeFDEntry>(sim_fds[1], O_RDONLY, wend); 86611908SBrandon.Potter@amd.com tgt_fds[1] = p->fds->allocFD(wpfd); 86711856Sbrandon.potter@amd.com 86811856Sbrandon.potter@amd.com /** 86911856Sbrandon.potter@amd.com * Now patch the read object to record the target file descriptor chosen 87011856Sbrandon.potter@amd.com * as the write end of the pipe. 87111856Sbrandon.potter@amd.com */ 87211856Sbrandon.potter@amd.com rpfd->setPipeReadSource(tgt_fds[1]); 87311856Sbrandon.potter@amd.com 87411856Sbrandon.potter@amd.com /** 87511856Sbrandon.potter@amd.com * Alpha Linux convention for pipe() is that fd[0] is returned as 87611856Sbrandon.potter@amd.com * the return value of the function, and fd[1] is returned in r20. 87711856Sbrandon.potter@amd.com */ 87811908SBrandon.Potter@amd.com if (pseudoPipe) { 87911908SBrandon.Potter@amd.com tc->setIntReg(SyscallPseudoReturnReg, tgt_fds[1]); 88011908SBrandon.Potter@amd.com return tgt_fds[0]; 88111908SBrandon.Potter@amd.com } 88211908SBrandon.Potter@amd.com 88311908SBrandon.Potter@amd.com /** 88411908SBrandon.Potter@amd.com * Copy the target file descriptors into buffer space and then copy 88511908SBrandon.Potter@amd.com * the buffer space back into the target address space. 88611908SBrandon.Potter@amd.com */ 88711908SBrandon.Potter@amd.com BufferArg tgt_handle(tgt_addr, sizeof(int[2])); 88811908SBrandon.Potter@amd.com int *buf_ptr = (int*)tgt_handle.bufferPtr(); 88911908SBrandon.Potter@amd.com buf_ptr[0] = tgt_fds[0]; 89011908SBrandon.Potter@amd.com buf_ptr[1] = tgt_fds[1]; 89111908SBrandon.Potter@amd.com tgt_handle.copyOut(tc->getMemProxy()); 89211908SBrandon.Potter@amd.com return 0; 89311908SBrandon.Potter@amd.com} 89411908SBrandon.Potter@amd.com 89511908SBrandon.Potter@amd.comSyscallReturn 89611908SBrandon.Potter@amd.compipePseudoFunc(SyscallDesc *desc, int callnum, Process *process, 89711908SBrandon.Potter@amd.com ThreadContext *tc) 89811908SBrandon.Potter@amd.com{ 89911908SBrandon.Potter@amd.com return pipeImpl(desc, callnum, process, tc, true); 90011908SBrandon.Potter@amd.com} 90111908SBrandon.Potter@amd.com 90211908SBrandon.Potter@amd.comSyscallReturn 90311908SBrandon.Potter@amd.compipeFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc) 90411908SBrandon.Potter@amd.com{ 90511908SBrandon.Potter@amd.com return pipeImpl(desc, callnum, process, tc, false); 9062238SN/A} 9072238SN/A 90811885Sbrandon.potter@amd.comSyscallReturn 90911885Sbrandon.potter@amd.comsetpgidFunc(SyscallDesc *desc, int callnum, Process *process, 91011885Sbrandon.potter@amd.com ThreadContext *tc) 91111885Sbrandon.potter@amd.com{ 91211885Sbrandon.potter@amd.com int index = 0; 91311885Sbrandon.potter@amd.com int pid = process->getSyscallArg(tc, index); 91411885Sbrandon.potter@amd.com int pgid = process->getSyscallArg(tc, index); 91511885Sbrandon.potter@amd.com 91611885Sbrandon.potter@amd.com if (pgid < 0) 91711885Sbrandon.potter@amd.com return -EINVAL; 91811885Sbrandon.potter@amd.com 91911885Sbrandon.potter@amd.com if (pid == 0) { 92011885Sbrandon.potter@amd.com process->setpgid(process->pid()); 92111885Sbrandon.potter@amd.com return 0; 92211885Sbrandon.potter@amd.com } 92311885Sbrandon.potter@amd.com 92411913SBrandon.Potter@amd.com Process *matched_ph = nullptr; 92511885Sbrandon.potter@amd.com System *sysh = tc->getSystemPtr(); 92611885Sbrandon.potter@amd.com 92711885Sbrandon.potter@amd.com // Retrieves process pointer from active/suspended thread contexts. 92811885Sbrandon.potter@amd.com for (int i = 0; i < sysh->numContexts(); i++) { 92911885Sbrandon.potter@amd.com if (sysh->threadContexts[i]->status() != ThreadContext::Halted) { 93011885Sbrandon.potter@amd.com Process *temp_h = sysh->threadContexts[i]->getProcessPtr(); 93111885Sbrandon.potter@amd.com Process *walk_ph = (Process*)temp_h; 93211885Sbrandon.potter@amd.com 93311885Sbrandon.potter@amd.com if (walk_ph && walk_ph->pid() == process->pid()) 93411885Sbrandon.potter@amd.com matched_ph = walk_ph; 93511885Sbrandon.potter@amd.com } 93611885Sbrandon.potter@amd.com } 93711885Sbrandon.potter@amd.com 93811913SBrandon.Potter@amd.com assert(matched_ph); 93911885Sbrandon.potter@amd.com matched_ph->setpgid((pgid == 0) ? matched_ph->pid() : pgid); 94011885Sbrandon.potter@amd.com 94111885Sbrandon.potter@amd.com return 0; 94211885Sbrandon.potter@amd.com} 9432238SN/A 9442238SN/ASyscallReturn 94511851Sbrandon.potter@amd.comgetpidPseudoFunc(SyscallDesc *desc, int callnum, Process *process, 94611851Sbrandon.potter@amd.com ThreadContext *tc) 9472238SN/A{ 9482238SN/A // Make up a PID. There's no interprocess communication in 9492238SN/A // fake_syscall mode, so there's no way for a process to know it's 9502238SN/A // not getting a unique value. 9512238SN/A 9523114Sgblack@eecs.umich.edu tc->setIntReg(SyscallPseudoReturnReg, process->ppid()); 9533114Sgblack@eecs.umich.edu return process->pid(); 9542238SN/A} 9552238SN/A 9562238SN/A 9572238SN/ASyscallReturn 95811851Sbrandon.potter@amd.comgetuidPseudoFunc(SyscallDesc *desc, int callnum, Process *process, 95911851Sbrandon.potter@amd.com ThreadContext *tc) 9602238SN/A{ 9612238SN/A // Make up a UID and EUID... it shouldn't matter, and we want the 9622238SN/A // simulation to be deterministic. 9632238SN/A 9642238SN/A // EUID goes in r20. 96511906SBrandon.Potter@amd.com tc->setIntReg(SyscallPseudoReturnReg, process->euid()); // EUID 96611906SBrandon.Potter@amd.com return process->uid(); // UID 9672238SN/A} 9682238SN/A 9692238SN/A 9702238SN/ASyscallReturn 97111851Sbrandon.potter@amd.comgetgidPseudoFunc(SyscallDesc *desc, int callnum, Process *process, 97211851Sbrandon.potter@amd.com ThreadContext *tc) 9732238SN/A{ 9742238SN/A // Get current group ID. EGID goes in r20. 97511906SBrandon.Potter@amd.com tc->setIntReg(SyscallPseudoReturnReg, process->egid()); // EGID 9763114Sgblack@eecs.umich.edu return process->gid(); 9772238SN/A} 9782238SN/A 9792238SN/A 9802238SN/ASyscallReturn 98111851Sbrandon.potter@amd.comsetuidFunc(SyscallDesc *desc, int callnum, Process *process, 9822680Sktlim@umich.edu ThreadContext *tc) 9832238SN/A{ 9842238SN/A // can't fathom why a benchmark would call this. 9856701Sgblack@eecs.umich.edu int index = 0; 9866701Sgblack@eecs.umich.edu warn("Ignoring call to setuid(%d)\n", process->getSyscallArg(tc, index)); 9872238SN/A return 0; 9882238SN/A} 9892238SN/A 9902238SN/ASyscallReturn 99111851Sbrandon.potter@amd.comgetpidFunc(SyscallDesc *desc, int callnum, Process *process, 9922680Sktlim@umich.edu ThreadContext *tc) 9932238SN/A{ 99411885Sbrandon.potter@amd.com return process->tgid(); 99511885Sbrandon.potter@amd.com} 9962238SN/A 99711885Sbrandon.potter@amd.comSyscallReturn 99811885Sbrandon.potter@amd.comgettidFunc(SyscallDesc *desc, int callnum, Process *process, 99911885Sbrandon.potter@amd.com ThreadContext *tc) 100011885Sbrandon.potter@amd.com{ 10013114Sgblack@eecs.umich.edu return process->pid(); 10022238SN/A} 10032238SN/A 10042238SN/ASyscallReturn 100511851Sbrandon.potter@amd.comgetppidFunc(SyscallDesc *desc, int callnum, Process *process, 100611851Sbrandon.potter@amd.com ThreadContext *tc) 10072238SN/A{ 10083114Sgblack@eecs.umich.edu return process->ppid(); 10092238SN/A} 10102238SN/A 10112238SN/ASyscallReturn 101211851Sbrandon.potter@amd.comgetuidFunc(SyscallDesc *desc, int callnum, Process *process, 10132680Sktlim@umich.edu ThreadContext *tc) 10142238SN/A{ 10155543Ssaidi@eecs.umich.edu return process->uid(); // UID 10162238SN/A} 10172238SN/A 10182238SN/ASyscallReturn 101911851Sbrandon.potter@amd.comgeteuidFunc(SyscallDesc *desc, int callnum, Process *process, 102011851Sbrandon.potter@amd.com ThreadContext *tc) 10212238SN/A{ 10225543Ssaidi@eecs.umich.edu return process->euid(); // UID 10232238SN/A} 10242238SN/A 10252238SN/ASyscallReturn 102611851Sbrandon.potter@amd.comgetgidFunc(SyscallDesc *desc, int callnum, Process *process, 10272680Sktlim@umich.edu ThreadContext *tc) 10282238SN/A{ 10293114Sgblack@eecs.umich.edu return process->gid(); 10302238SN/A} 10312238SN/A 10322238SN/ASyscallReturn 103311851Sbrandon.potter@amd.comgetegidFunc(SyscallDesc *desc, int callnum, Process *process, 103411851Sbrandon.potter@amd.com ThreadContext *tc) 10352238SN/A{ 10363114Sgblack@eecs.umich.edu return process->egid(); 10372238SN/A} 10382238SN/A 10399455Smitch.hayenga+gem5@gmail.comSyscallReturn 104011856Sbrandon.potter@amd.comfallocateFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 104111760Sbrandon.potter@amd.com{ 104211799Sbrandon.potter@amd.com#if NO_FALLOCATE 104311799Sbrandon.potter@amd.com warn("Host OS cannot support calls to fallocate. Ignoring syscall"); 104411799Sbrandon.potter@amd.com#else 104511760Sbrandon.potter@amd.com int index = 0; 104611856Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 104711856Sbrandon.potter@amd.com int mode = p->getSyscallArg(tc, index); 104811856Sbrandon.potter@amd.com off_t offset = p->getSyscallArg(tc, index); 104911856Sbrandon.potter@amd.com off_t len = p->getSyscallArg(tc, index); 105011760Sbrandon.potter@amd.com 105111856Sbrandon.potter@amd.com auto ffdp = std::dynamic_pointer_cast<FileFDEntry>((*p->fds)[tgt_fd]); 105211856Sbrandon.potter@amd.com if (!ffdp) 105311760Sbrandon.potter@amd.com return -EBADF; 105411856Sbrandon.potter@amd.com int sim_fd = ffdp->getSimFD(); 105511760Sbrandon.potter@amd.com 105611760Sbrandon.potter@amd.com int result = fallocate(sim_fd, mode, offset, len); 105711760Sbrandon.potter@amd.com if (result < 0) 105811760Sbrandon.potter@amd.com return -errno; 105911799Sbrandon.potter@amd.com#endif 106011760Sbrandon.potter@amd.com return 0; 106111760Sbrandon.potter@amd.com} 106211760Sbrandon.potter@amd.com 106311760Sbrandon.potter@amd.comSyscallReturn 106411851Sbrandon.potter@amd.comaccessFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc, 106511851Sbrandon.potter@amd.com int index) 10669455Smitch.hayenga+gem5@gmail.com{ 10679455Smitch.hayenga+gem5@gmail.com string path; 10689455Smitch.hayenga+gem5@gmail.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 106910223Ssteve.reinhardt@amd.com return -EFAULT; 10709455Smitch.hayenga+gem5@gmail.com 10719455Smitch.hayenga+gem5@gmail.com // Adjust path for current working directory 10729455Smitch.hayenga+gem5@gmail.com path = p->fullPath(path); 10739455Smitch.hayenga+gem5@gmail.com 10749455Smitch.hayenga+gem5@gmail.com mode_t mode = p->getSyscallArg(tc, index); 10759455Smitch.hayenga+gem5@gmail.com 10769455Smitch.hayenga+gem5@gmail.com int result = access(path.c_str(), mode); 10779455Smitch.hayenga+gem5@gmail.com return (result == -1) ? -errno : result; 10789455Smitch.hayenga+gem5@gmail.com} 107910203SAli.Saidi@ARM.com 108010203SAli.Saidi@ARM.comSyscallReturn 108111851Sbrandon.potter@amd.comaccessFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 108210203SAli.Saidi@ARM.com{ 108310203SAli.Saidi@ARM.com return accessFunc(desc, callnum, p, tc, 0); 108410203SAli.Saidi@ARM.com} 108510203SAli.Saidi@ARM.com 108613031Sbrandon.potter@amd.comSyscallReturn 108713031Sbrandon.potter@amd.commknodFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 108813031Sbrandon.potter@amd.com{ 108913031Sbrandon.potter@amd.com int index = 0; 109013031Sbrandon.potter@amd.com std::string path; 109113031Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 109213031Sbrandon.potter@amd.com return -EFAULT; 109313031Sbrandon.potter@amd.com 109413031Sbrandon.potter@amd.com path = p->fullPath(path); 109513031Sbrandon.potter@amd.com mode_t mode = p->getSyscallArg(tc, index); 109613031Sbrandon.potter@amd.com dev_t dev = p->getSyscallArg(tc, index); 109713031Sbrandon.potter@amd.com 109813031Sbrandon.potter@amd.com auto result = mknod(path.c_str(), mode, dev); 109913031Sbrandon.potter@amd.com return (result == -1) ? -errno : result; 110013031Sbrandon.potter@amd.com} 110113031Sbrandon.potter@amd.com 110213031Sbrandon.potter@amd.comSyscallReturn 110313031Sbrandon.potter@amd.comchdirFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 110413031Sbrandon.potter@amd.com{ 110513031Sbrandon.potter@amd.com int index = 0; 110613031Sbrandon.potter@amd.com std::string path; 110713031Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 110813031Sbrandon.potter@amd.com return -EFAULT; 110913031Sbrandon.potter@amd.com 111013031Sbrandon.potter@amd.com path = p->fullPath(path); 111113031Sbrandon.potter@amd.com 111213031Sbrandon.potter@amd.com auto result = chdir(path.c_str()); 111313031Sbrandon.potter@amd.com return (result == -1) ? -errno : result; 111413031Sbrandon.potter@amd.com} 111513031Sbrandon.potter@amd.com 111613031Sbrandon.potter@amd.comSyscallReturn 111713031Sbrandon.potter@amd.comrmdirFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 111813031Sbrandon.potter@amd.com{ 111913031Sbrandon.potter@amd.com int index = 0; 112013031Sbrandon.potter@amd.com std::string path; 112113031Sbrandon.potter@amd.com if (!tc->getMemProxy().tryReadString(path, p->getSyscallArg(tc, index))) 112213031Sbrandon.potter@amd.com return -EFAULT; 112313031Sbrandon.potter@amd.com 112413031Sbrandon.potter@amd.com path = p->fullPath(path); 112513031Sbrandon.potter@amd.com 112613031Sbrandon.potter@amd.com auto result = rmdir(path.c_str()); 112713031Sbrandon.potter@amd.com return (result == -1) ? -errno : result; 112813031Sbrandon.potter@amd.com} 112913031Sbrandon.potter@amd.com 113013539Sjavier.setoain@arm.com#if defined(SYS_getdents) || defined(SYS_getdents64) 113113539Sjavier.setoain@arm.comtemplate<typename DE, int SYS_NUM> 113213539Sjavier.setoain@arm.comstatic SyscallReturn 113313539Sjavier.setoain@arm.comgetdentsImpl(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 113413031Sbrandon.potter@amd.com{ 113513031Sbrandon.potter@amd.com int index = 0; 113613031Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 113713031Sbrandon.potter@amd.com Addr buf_ptr = p->getSyscallArg(tc, index); 113813031Sbrandon.potter@amd.com unsigned count = p->getSyscallArg(tc, index); 113913031Sbrandon.potter@amd.com 114013031Sbrandon.potter@amd.com auto hbfdp = std::dynamic_pointer_cast<HBFDEntry>((*p->fds)[tgt_fd]); 114113031Sbrandon.potter@amd.com if (!hbfdp) 114213031Sbrandon.potter@amd.com return -EBADF; 114313031Sbrandon.potter@amd.com int sim_fd = hbfdp->getSimFD(); 114413031Sbrandon.potter@amd.com 114513031Sbrandon.potter@amd.com BufferArg buf_arg(buf_ptr, count); 114613539Sjavier.setoain@arm.com auto status = syscall(SYS_NUM, sim_fd, buf_arg.bufferPtr(), count); 114713031Sbrandon.potter@amd.com 114813031Sbrandon.potter@amd.com if (status == -1) 114913031Sbrandon.potter@amd.com return -errno; 115013031Sbrandon.potter@amd.com 115113031Sbrandon.potter@amd.com unsigned traversed = 0; 115213031Sbrandon.potter@amd.com while (traversed < status) { 115313539Sjavier.setoain@arm.com DE *buffer = (DE*)((Addr)buf_arg.bufferPtr() + traversed); 115413031Sbrandon.potter@amd.com 115513031Sbrandon.potter@amd.com auto host_reclen = buffer->d_reclen; 115613031Sbrandon.potter@amd.com 115713031Sbrandon.potter@amd.com /** 115813031Sbrandon.potter@amd.com * Convert the byte ordering from the host to the target before 115913031Sbrandon.potter@amd.com * passing the data back into the target's address space to preserve 116013031Sbrandon.potter@amd.com * endianness. 116113031Sbrandon.potter@amd.com */ 116213031Sbrandon.potter@amd.com buffer->d_ino = htog(buffer->d_ino); 116313031Sbrandon.potter@amd.com buffer->d_off = htog(buffer->d_off); 116413031Sbrandon.potter@amd.com buffer->d_reclen = htog(buffer->d_reclen); 116513031Sbrandon.potter@amd.com 116613031Sbrandon.potter@amd.com traversed += host_reclen; 116713031Sbrandon.potter@amd.com } 116813031Sbrandon.potter@amd.com 116913031Sbrandon.potter@amd.com buf_arg.copyOut(tc->getMemProxy()); 117013031Sbrandon.potter@amd.com return status; 117113031Sbrandon.potter@amd.com} 117213448Sciro.santilli@arm.com#endif 117313539Sjavier.setoain@arm.com 117413539Sjavier.setoain@arm.com#if defined(SYS_getdents) 117513539Sjavier.setoain@arm.comSyscallReturn 117613539Sjavier.setoain@arm.comgetdentsFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 117713539Sjavier.setoain@arm.com{ 117813539Sjavier.setoain@arm.com typedef struct linux_dirent { 117913539Sjavier.setoain@arm.com unsigned long d_ino; 118013539Sjavier.setoain@arm.com unsigned long d_off; 118113539Sjavier.setoain@arm.com unsigned short d_reclen; 118213539Sjavier.setoain@arm.com char dname[]; 118313539Sjavier.setoain@arm.com } LinDent; 118413539Sjavier.setoain@arm.com 118513539Sjavier.setoain@arm.com return getdentsImpl<LinDent, SYS_getdents>(desc, callnum, p, tc); 118613539Sjavier.setoain@arm.com} 118713539Sjavier.setoain@arm.com#endif 118813539Sjavier.setoain@arm.com 118913539Sjavier.setoain@arm.com#if defined(SYS_getdents64) 119013539Sjavier.setoain@arm.comSyscallReturn 119113539Sjavier.setoain@arm.comgetdents64Func(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc) 119213539Sjavier.setoain@arm.com{ 119313539Sjavier.setoain@arm.com typedef struct linux_dirent64 { 119413539Sjavier.setoain@arm.com ino64_t d_ino; 119513539Sjavier.setoain@arm.com off64_t d_off; 119613539Sjavier.setoain@arm.com unsigned short d_reclen; 119713539Sjavier.setoain@arm.com char dname[]; 119813539Sjavier.setoain@arm.com } LinDent64; 119913539Sjavier.setoain@arm.com 120013539Sjavier.setoain@arm.com return getdentsImpl<LinDent64, SYS_getdents64>(desc, callnum, p, tc); 120113539Sjavier.setoain@arm.com} 120213539Sjavier.setoain@arm.com#endif 120313568Sbrandon.potter@amd.com 120413568Sbrandon.potter@amd.comSyscallReturn 120513568Sbrandon.potter@amd.comshutdownFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 120613568Sbrandon.potter@amd.com{ 120713568Sbrandon.potter@amd.com int index = 0; 120813568Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 120913568Sbrandon.potter@amd.com int how = p->getSyscallArg(tc, index); 121013568Sbrandon.potter@amd.com 121113568Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 121213568Sbrandon.potter@amd.com if (!sfdp) 121313568Sbrandon.potter@amd.com return -EBADF; 121413568Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 121513568Sbrandon.potter@amd.com 121613568Sbrandon.potter@amd.com int retval = shutdown(sim_fd, how); 121713568Sbrandon.potter@amd.com 121813568Sbrandon.potter@amd.com return (retval == -1) ? -errno : retval; 121913568Sbrandon.potter@amd.com} 122013568Sbrandon.potter@amd.com 122113568Sbrandon.potter@amd.comSyscallReturn 122213568Sbrandon.potter@amd.combindFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 122313568Sbrandon.potter@amd.com{ 122413568Sbrandon.potter@amd.com int index = 0; 122513568Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 122613568Sbrandon.potter@amd.com Addr buf_ptr = p->getSyscallArg(tc, index); 122713568Sbrandon.potter@amd.com int addrlen = p->getSyscallArg(tc, index); 122813568Sbrandon.potter@amd.com 122913568Sbrandon.potter@amd.com BufferArg bufSock(buf_ptr, addrlen); 123013568Sbrandon.potter@amd.com bufSock.copyIn(tc->getMemProxy()); 123113568Sbrandon.potter@amd.com 123213568Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 123313568Sbrandon.potter@amd.com if (!sfdp) 123413568Sbrandon.potter@amd.com return -EBADF; 123513568Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 123613568Sbrandon.potter@amd.com 123713568Sbrandon.potter@amd.com int status = ::bind(sim_fd, 123813568Sbrandon.potter@amd.com (struct sockaddr *)bufSock.bufferPtr(), 123913568Sbrandon.potter@amd.com addrlen); 124013568Sbrandon.potter@amd.com 124113568Sbrandon.potter@amd.com return (status == -1) ? -errno : status; 124213568Sbrandon.potter@amd.com} 124313568Sbrandon.potter@amd.com 124413568Sbrandon.potter@amd.comSyscallReturn 124513568Sbrandon.potter@amd.comlistenFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 124613568Sbrandon.potter@amd.com{ 124713568Sbrandon.potter@amd.com int index = 0; 124813568Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 124913568Sbrandon.potter@amd.com int backlog = p->getSyscallArg(tc, index); 125013568Sbrandon.potter@amd.com 125113568Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 125213568Sbrandon.potter@amd.com if (!sfdp) 125313568Sbrandon.potter@amd.com return -EBADF; 125413568Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 125513568Sbrandon.potter@amd.com 125613568Sbrandon.potter@amd.com int status = listen(sim_fd, backlog); 125713568Sbrandon.potter@amd.com 125813568Sbrandon.potter@amd.com return (status == -1) ? -errno : status; 125913568Sbrandon.potter@amd.com} 126013568Sbrandon.potter@amd.com 126113568Sbrandon.potter@amd.comSyscallReturn 126213568Sbrandon.potter@amd.comconnectFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 126313568Sbrandon.potter@amd.com{ 126413568Sbrandon.potter@amd.com int index = 0; 126513568Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 126613568Sbrandon.potter@amd.com Addr buf_ptr = p->getSyscallArg(tc, index); 126713568Sbrandon.potter@amd.com int addrlen = p->getSyscallArg(tc, index); 126813568Sbrandon.potter@amd.com 126913568Sbrandon.potter@amd.com BufferArg addr(buf_ptr, addrlen); 127013568Sbrandon.potter@amd.com addr.copyIn(tc->getMemProxy()); 127113568Sbrandon.potter@amd.com 127213568Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 127313568Sbrandon.potter@amd.com if (!sfdp) 127413568Sbrandon.potter@amd.com return -EBADF; 127513568Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 127613568Sbrandon.potter@amd.com 127713568Sbrandon.potter@amd.com int status = connect(sim_fd, 127813568Sbrandon.potter@amd.com (struct sockaddr *)addr.bufferPtr(), 127913568Sbrandon.potter@amd.com (socklen_t)addrlen); 128013568Sbrandon.potter@amd.com 128113568Sbrandon.potter@amd.com return (status == -1) ? -errno : status; 128213568Sbrandon.potter@amd.com} 128313569Sbrandon.potter@amd.com 128413569Sbrandon.potter@amd.comSyscallReturn 128513569Sbrandon.potter@amd.comrecvfromFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 128613569Sbrandon.potter@amd.com{ 128713569Sbrandon.potter@amd.com int index = 0; 128813569Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 128913569Sbrandon.potter@amd.com Addr bufrPtr = p->getSyscallArg(tc, index); 129013569Sbrandon.potter@amd.com size_t bufrLen = p->getSyscallArg(tc, index); 129113569Sbrandon.potter@amd.com int flags = p->getSyscallArg(tc, index); 129213569Sbrandon.potter@amd.com Addr addrPtr = p->getSyscallArg(tc, index); 129313569Sbrandon.potter@amd.com Addr addrlenPtr = p->getSyscallArg(tc, index); 129413569Sbrandon.potter@amd.com 129513569Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 129613569Sbrandon.potter@amd.com if (!sfdp) 129713569Sbrandon.potter@amd.com return -EBADF; 129813569Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 129913569Sbrandon.potter@amd.com 130013569Sbrandon.potter@amd.com // Reserve buffer space. 130113569Sbrandon.potter@amd.com BufferArg bufrBuf(bufrPtr, bufrLen); 130213569Sbrandon.potter@amd.com 130313569Sbrandon.potter@amd.com // Get address length. 130413569Sbrandon.potter@amd.com socklen_t addrLen = 0; 130513569Sbrandon.potter@amd.com if (addrlenPtr != 0) { 130613569Sbrandon.potter@amd.com // Read address length parameter. 130713569Sbrandon.potter@amd.com BufferArg addrlenBuf(addrlenPtr, sizeof(socklen_t)); 130813569Sbrandon.potter@amd.com addrlenBuf.copyIn(tc->getMemProxy()); 130913569Sbrandon.potter@amd.com addrLen = *((socklen_t *)addrlenBuf.bufferPtr()); 131013569Sbrandon.potter@amd.com } 131113569Sbrandon.potter@amd.com 131213569Sbrandon.potter@amd.com struct sockaddr sa, *sap = NULL; 131313569Sbrandon.potter@amd.com if (addrLen != 0) { 131413569Sbrandon.potter@amd.com BufferArg addrBuf(addrPtr, addrLen); 131513569Sbrandon.potter@amd.com addrBuf.copyIn(tc->getMemProxy()); 131613569Sbrandon.potter@amd.com memcpy(&sa, (struct sockaddr *)addrBuf.bufferPtr(), 131713569Sbrandon.potter@amd.com sizeof(struct sockaddr)); 131813569Sbrandon.potter@amd.com sap = &sa; 131913569Sbrandon.potter@amd.com } 132013569Sbrandon.potter@amd.com 132113569Sbrandon.potter@amd.com ssize_t recvd_size = recvfrom(sim_fd, 132213569Sbrandon.potter@amd.com (void *)bufrBuf.bufferPtr(), 132313569Sbrandon.potter@amd.com bufrLen, flags, sap, (socklen_t *)&addrLen); 132413569Sbrandon.potter@amd.com 132513569Sbrandon.potter@amd.com if (recvd_size == -1) 132613569Sbrandon.potter@amd.com return -errno; 132713569Sbrandon.potter@amd.com 132813569Sbrandon.potter@amd.com // Pass the received data out. 132913569Sbrandon.potter@amd.com bufrBuf.copyOut(tc->getMemProxy()); 133013569Sbrandon.potter@amd.com 133113569Sbrandon.potter@amd.com // Copy address to addrPtr and pass it on. 133213569Sbrandon.potter@amd.com if (sap != NULL) { 133313569Sbrandon.potter@amd.com BufferArg addrBuf(addrPtr, addrLen); 133413569Sbrandon.potter@amd.com memcpy(addrBuf.bufferPtr(), sap, sizeof(sa)); 133513569Sbrandon.potter@amd.com addrBuf.copyOut(tc->getMemProxy()); 133613569Sbrandon.potter@amd.com } 133713569Sbrandon.potter@amd.com 133813569Sbrandon.potter@amd.com // Copy len to addrlenPtr and pass it on. 133913569Sbrandon.potter@amd.com if (addrLen != 0) { 134013569Sbrandon.potter@amd.com BufferArg addrlenBuf(addrlenPtr, sizeof(socklen_t)); 134113569Sbrandon.potter@amd.com *(socklen_t *)addrlenBuf.bufferPtr() = addrLen; 134213569Sbrandon.potter@amd.com addrlenBuf.copyOut(tc->getMemProxy()); 134313569Sbrandon.potter@amd.com } 134413569Sbrandon.potter@amd.com 134513569Sbrandon.potter@amd.com return recvd_size; 134613569Sbrandon.potter@amd.com} 134713569Sbrandon.potter@amd.com 134813569Sbrandon.potter@amd.comSyscallReturn 134913569Sbrandon.potter@amd.comsendtoFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 135013569Sbrandon.potter@amd.com{ 135113569Sbrandon.potter@amd.com int index = 0; 135213569Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 135313569Sbrandon.potter@amd.com Addr bufrPtr = p->getSyscallArg(tc, index); 135413569Sbrandon.potter@amd.com size_t bufrLen = p->getSyscallArg(tc, index); 135513569Sbrandon.potter@amd.com int flags = p->getSyscallArg(tc, index); 135613569Sbrandon.potter@amd.com Addr addrPtr = p->getSyscallArg(tc, index); 135713569Sbrandon.potter@amd.com socklen_t addrLen = p->getSyscallArg(tc, index); 135813569Sbrandon.potter@amd.com 135913569Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 136013569Sbrandon.potter@amd.com if (!sfdp) 136113569Sbrandon.potter@amd.com return -EBADF; 136213569Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 136313569Sbrandon.potter@amd.com 136413569Sbrandon.potter@amd.com // Reserve buffer space. 136513569Sbrandon.potter@amd.com BufferArg bufrBuf(bufrPtr, bufrLen); 136613569Sbrandon.potter@amd.com bufrBuf.copyIn(tc->getMemProxy()); 136713569Sbrandon.potter@amd.com 136813569Sbrandon.potter@amd.com struct sockaddr sa, *sap = nullptr; 136913569Sbrandon.potter@amd.com memset(&sa, 0, sizeof(sockaddr)); 137013569Sbrandon.potter@amd.com if (addrLen != 0) { 137113569Sbrandon.potter@amd.com BufferArg addrBuf(addrPtr, addrLen); 137213569Sbrandon.potter@amd.com addrBuf.copyIn(tc->getMemProxy()); 137313569Sbrandon.potter@amd.com memcpy(&sa, (sockaddr*)addrBuf.bufferPtr(), addrLen); 137413569Sbrandon.potter@amd.com sap = &sa; 137513569Sbrandon.potter@amd.com } 137613569Sbrandon.potter@amd.com 137713569Sbrandon.potter@amd.com ssize_t sent_size = sendto(sim_fd, 137813569Sbrandon.potter@amd.com (void *)bufrBuf.bufferPtr(), 137913569Sbrandon.potter@amd.com bufrLen, flags, sap, (socklen_t)addrLen); 138013569Sbrandon.potter@amd.com 138113569Sbrandon.potter@amd.com return (sent_size == -1) ? -errno : sent_size; 138213569Sbrandon.potter@amd.com} 138313569Sbrandon.potter@amd.com 138413569Sbrandon.potter@amd.comSyscallReturn 138513569Sbrandon.potter@amd.comrecvmsgFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 138613569Sbrandon.potter@amd.com{ 138713569Sbrandon.potter@amd.com int index = 0; 138813569Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 138913569Sbrandon.potter@amd.com Addr msgPtr = p->getSyscallArg(tc, index); 139013569Sbrandon.potter@amd.com int flags = p->getSyscallArg(tc, index); 139113569Sbrandon.potter@amd.com 139213569Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 139313569Sbrandon.potter@amd.com if (!sfdp) 139413569Sbrandon.potter@amd.com return -EBADF; 139513569Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 139613569Sbrandon.potter@amd.com 139713569Sbrandon.potter@amd.com /** 139813569Sbrandon.potter@amd.com * struct msghdr { 139913569Sbrandon.potter@amd.com * void *msg_name; // optional address 140013569Sbrandon.potter@amd.com * socklen_t msg_namelen; // size of address 140113569Sbrandon.potter@amd.com * struct iovec *msg_iov; // iovec array 140213569Sbrandon.potter@amd.com * size_t msg_iovlen; // number entries in msg_iov 140313569Sbrandon.potter@amd.com * i // entries correspond to buffer 140413569Sbrandon.potter@amd.com * void *msg_control; // ancillary data 140513569Sbrandon.potter@amd.com * size_t msg_controllen; // ancillary data buffer len 140613569Sbrandon.potter@amd.com * int msg_flags; // flags on received message 140713569Sbrandon.potter@amd.com * }; 140813569Sbrandon.potter@amd.com * 140913569Sbrandon.potter@amd.com * struct iovec { 141013569Sbrandon.potter@amd.com * void *iov_base; // starting address 141113569Sbrandon.potter@amd.com * size_t iov_len; // number of bytes to transfer 141213569Sbrandon.potter@amd.com * }; 141313569Sbrandon.potter@amd.com */ 141413569Sbrandon.potter@amd.com 141513569Sbrandon.potter@amd.com /** 141613569Sbrandon.potter@amd.com * The plan with this system call is to replace all of the pointers in the 141713569Sbrandon.potter@amd.com * structure and the substructure with BufferArg class pointers. We will 141813569Sbrandon.potter@amd.com * copy every field from the structures into our BufferArg classes. 141913569Sbrandon.potter@amd.com */ 142013569Sbrandon.potter@amd.com BufferArg msgBuf(msgPtr, sizeof(struct msghdr)); 142113569Sbrandon.potter@amd.com msgBuf.copyIn(tc->getMemProxy()); 142213569Sbrandon.potter@amd.com struct msghdr *msgHdr = (struct msghdr *)msgBuf.bufferPtr(); 142313569Sbrandon.potter@amd.com 142413569Sbrandon.potter@amd.com /** 142513569Sbrandon.potter@amd.com * We will use these address place holders to retain the pointers which 142613569Sbrandon.potter@amd.com * we are going to replace with our own buffers in our simulator address 142713569Sbrandon.potter@amd.com * space. 142813569Sbrandon.potter@amd.com */ 142913569Sbrandon.potter@amd.com Addr msg_name_phold = 0; 143013569Sbrandon.potter@amd.com Addr msg_iov_phold = 0; 143113569Sbrandon.potter@amd.com Addr iovec_base_phold[msgHdr->msg_iovlen]; 143213569Sbrandon.potter@amd.com Addr msg_control_phold = 0; 143313569Sbrandon.potter@amd.com 143413569Sbrandon.potter@amd.com /** 143513569Sbrandon.potter@amd.com * Record msg_name pointer then replace with buffer pointer. 143613569Sbrandon.potter@amd.com */ 143713569Sbrandon.potter@amd.com BufferArg *nameBuf = NULL; 143813569Sbrandon.potter@amd.com if (msgHdr->msg_name) { 143913569Sbrandon.potter@amd.com /*1*/msg_name_phold = (Addr)msgHdr->msg_name; 144013569Sbrandon.potter@amd.com /*2*/nameBuf = new BufferArg(msg_name_phold, msgHdr->msg_namelen); 144113569Sbrandon.potter@amd.com /*3*/nameBuf->copyIn(tc->getMemProxy()); 144213569Sbrandon.potter@amd.com /*4*/msgHdr->msg_name = nameBuf->bufferPtr(); 144313569Sbrandon.potter@amd.com } 144413569Sbrandon.potter@amd.com 144513569Sbrandon.potter@amd.com /** 144613569Sbrandon.potter@amd.com * Record msg_iov pointer then replace with buffer pointer. Also, setup 144713569Sbrandon.potter@amd.com * an array of buffer pointers for the iovec structs record and replace 144813569Sbrandon.potter@amd.com * their pointers with buffer pointers. 144913569Sbrandon.potter@amd.com */ 145013569Sbrandon.potter@amd.com BufferArg *iovBuf = NULL; 145113569Sbrandon.potter@amd.com BufferArg *iovecBuf[msgHdr->msg_iovlen]; 145213569Sbrandon.potter@amd.com for (int i = 0; i < msgHdr->msg_iovlen; i++) { 145313569Sbrandon.potter@amd.com iovec_base_phold[i] = 0; 145413569Sbrandon.potter@amd.com iovecBuf[i] = NULL; 145513569Sbrandon.potter@amd.com } 145613569Sbrandon.potter@amd.com 145713569Sbrandon.potter@amd.com if (msgHdr->msg_iov) { 145813569Sbrandon.potter@amd.com /*1*/msg_iov_phold = (Addr)msgHdr->msg_iov; 145913569Sbrandon.potter@amd.com /*2*/iovBuf = new BufferArg(msg_iov_phold, msgHdr->msg_iovlen * 146013569Sbrandon.potter@amd.com sizeof(struct iovec)); 146113569Sbrandon.potter@amd.com /*3*/iovBuf->copyIn(tc->getMemProxy()); 146213569Sbrandon.potter@amd.com for (int i = 0; i < msgHdr->msg_iovlen; i++) { 146313569Sbrandon.potter@amd.com if (((struct iovec *)iovBuf->bufferPtr())[i].iov_base) { 146413569Sbrandon.potter@amd.com /*1*/iovec_base_phold[i] = 146513569Sbrandon.potter@amd.com (Addr)((struct iovec *)iovBuf->bufferPtr())[i].iov_base; 146613569Sbrandon.potter@amd.com /*2*/iovecBuf[i] = new BufferArg(iovec_base_phold[i], 146713569Sbrandon.potter@amd.com ((struct iovec *)iovBuf->bufferPtr())[i].iov_len); 146813569Sbrandon.potter@amd.com /*3*/iovecBuf[i]->copyIn(tc->getMemProxy()); 146913569Sbrandon.potter@amd.com /*4*/((struct iovec *)iovBuf->bufferPtr())[i].iov_base = 147013569Sbrandon.potter@amd.com iovecBuf[i]->bufferPtr(); 147113569Sbrandon.potter@amd.com } 147213569Sbrandon.potter@amd.com } 147313569Sbrandon.potter@amd.com /*4*/msgHdr->msg_iov = (struct iovec *)iovBuf->bufferPtr(); 147413569Sbrandon.potter@amd.com } 147513569Sbrandon.potter@amd.com 147613569Sbrandon.potter@amd.com /** 147713569Sbrandon.potter@amd.com * Record msg_control pointer then replace with buffer pointer. 147813569Sbrandon.potter@amd.com */ 147913569Sbrandon.potter@amd.com BufferArg *controlBuf = NULL; 148013569Sbrandon.potter@amd.com if (msgHdr->msg_control) { 148113569Sbrandon.potter@amd.com /*1*/msg_control_phold = (Addr)msgHdr->msg_control; 148213569Sbrandon.potter@amd.com /*2*/controlBuf = new BufferArg(msg_control_phold, 148313569Sbrandon.potter@amd.com CMSG_ALIGN(msgHdr->msg_controllen)); 148413569Sbrandon.potter@amd.com /*3*/controlBuf->copyIn(tc->getMemProxy()); 148513569Sbrandon.potter@amd.com /*4*/msgHdr->msg_control = controlBuf->bufferPtr(); 148613569Sbrandon.potter@amd.com } 148713569Sbrandon.potter@amd.com 148813569Sbrandon.potter@amd.com ssize_t recvd_size = recvmsg(sim_fd, msgHdr, flags); 148913569Sbrandon.potter@amd.com 149013569Sbrandon.potter@amd.com if (recvd_size < 0) 149113569Sbrandon.potter@amd.com return -errno; 149213569Sbrandon.potter@amd.com 149313569Sbrandon.potter@amd.com if (msgHdr->msg_name) { 149413569Sbrandon.potter@amd.com nameBuf->copyOut(tc->getMemProxy()); 149513569Sbrandon.potter@amd.com delete(nameBuf); 149613569Sbrandon.potter@amd.com msgHdr->msg_name = (void *)msg_name_phold; 149713569Sbrandon.potter@amd.com } 149813569Sbrandon.potter@amd.com 149913569Sbrandon.potter@amd.com if (msgHdr->msg_iov) { 150013569Sbrandon.potter@amd.com for (int i = 0; i< msgHdr->msg_iovlen; i++) { 150113569Sbrandon.potter@amd.com if (((struct iovec *)iovBuf->bufferPtr())[i].iov_base) { 150213569Sbrandon.potter@amd.com iovecBuf[i]->copyOut(tc->getMemProxy()); 150313569Sbrandon.potter@amd.com delete iovecBuf[i]; 150413569Sbrandon.potter@amd.com ((struct iovec *)iovBuf->bufferPtr())[i].iov_base = 150513569Sbrandon.potter@amd.com (void *)iovec_base_phold[i]; 150613569Sbrandon.potter@amd.com } 150713569Sbrandon.potter@amd.com } 150813569Sbrandon.potter@amd.com iovBuf->copyOut(tc->getMemProxy()); 150913569Sbrandon.potter@amd.com delete iovBuf; 151013569Sbrandon.potter@amd.com msgHdr->msg_iov = (struct iovec *)msg_iov_phold; 151113569Sbrandon.potter@amd.com } 151213569Sbrandon.potter@amd.com 151313569Sbrandon.potter@amd.com if (msgHdr->msg_control) { 151413569Sbrandon.potter@amd.com controlBuf->copyOut(tc->getMemProxy()); 151513569Sbrandon.potter@amd.com delete(controlBuf); 151613569Sbrandon.potter@amd.com msgHdr->msg_control = (void *)msg_control_phold; 151713569Sbrandon.potter@amd.com } 151813569Sbrandon.potter@amd.com 151913569Sbrandon.potter@amd.com msgBuf.copyOut(tc->getMemProxy()); 152013569Sbrandon.potter@amd.com 152113569Sbrandon.potter@amd.com return recvd_size; 152213569Sbrandon.potter@amd.com} 152313569Sbrandon.potter@amd.com 152413569Sbrandon.potter@amd.comSyscallReturn 152513569Sbrandon.potter@amd.comsendmsgFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 152613569Sbrandon.potter@amd.com{ 152713569Sbrandon.potter@amd.com int index = 0; 152813569Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 152913569Sbrandon.potter@amd.com Addr msgPtr = p->getSyscallArg(tc, index); 153013569Sbrandon.potter@amd.com int flags = p->getSyscallArg(tc, index); 153113569Sbrandon.potter@amd.com 153213569Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 153313569Sbrandon.potter@amd.com if (!sfdp) 153413569Sbrandon.potter@amd.com return -EBADF; 153513569Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 153613569Sbrandon.potter@amd.com 153713569Sbrandon.potter@amd.com /** 153813569Sbrandon.potter@amd.com * Reserve buffer space. 153913569Sbrandon.potter@amd.com */ 154013569Sbrandon.potter@amd.com BufferArg msgBuf(msgPtr, sizeof(struct msghdr)); 154113569Sbrandon.potter@amd.com msgBuf.copyIn(tc->getMemProxy()); 154213569Sbrandon.potter@amd.com struct msghdr msgHdr = *((struct msghdr *)msgBuf.bufferPtr()); 154313569Sbrandon.potter@amd.com 154413569Sbrandon.potter@amd.com /** 154513569Sbrandon.potter@amd.com * Assuming msgHdr.msg_iovlen >= 1, then there is no point calling 154613569Sbrandon.potter@amd.com * recvmsg without a buffer. 154713569Sbrandon.potter@amd.com */ 154813569Sbrandon.potter@amd.com struct iovec *iovPtr = msgHdr.msg_iov; 154913569Sbrandon.potter@amd.com BufferArg iovBuf((Addr)iovPtr, sizeof(struct iovec) * msgHdr.msg_iovlen); 155013569Sbrandon.potter@amd.com iovBuf.copyIn(tc->getMemProxy()); 155113569Sbrandon.potter@amd.com struct iovec *iov = (struct iovec *)iovBuf.bufferPtr(); 155213569Sbrandon.potter@amd.com msgHdr.msg_iov = iov; 155313569Sbrandon.potter@amd.com 155413569Sbrandon.potter@amd.com /** 155513569Sbrandon.potter@amd.com * Cannot instantiate buffers till inside the loop. 155613569Sbrandon.potter@amd.com * Create array to hold buffer addresses, to be used during copyIn of 155713569Sbrandon.potter@amd.com * send data. 155813569Sbrandon.potter@amd.com */ 155913569Sbrandon.potter@amd.com BufferArg **bufferArray = (BufferArg **)malloc(msgHdr.msg_iovlen 156013569Sbrandon.potter@amd.com * sizeof(BufferArg *)); 156113569Sbrandon.potter@amd.com 156213569Sbrandon.potter@amd.com /** 156313569Sbrandon.potter@amd.com * Iterate through the iovec structures: 156413569Sbrandon.potter@amd.com * Get the base buffer addreses, reserve iov_len amount of space for each. 156513569Sbrandon.potter@amd.com * Put the buf address into the bufferArray for later retrieval. 156613569Sbrandon.potter@amd.com */ 156713569Sbrandon.potter@amd.com for (int iovIndex = 0 ; iovIndex < msgHdr.msg_iovlen; iovIndex++) { 156813569Sbrandon.potter@amd.com Addr basePtr = (Addr) iov[iovIndex].iov_base; 156913569Sbrandon.potter@amd.com bufferArray[iovIndex] = new BufferArg(basePtr, iov[iovIndex].iov_len); 157013569Sbrandon.potter@amd.com bufferArray[iovIndex]->copyIn(tc->getMemProxy()); 157113569Sbrandon.potter@amd.com iov[iovIndex].iov_base = bufferArray[iovIndex]->bufferPtr(); 157213569Sbrandon.potter@amd.com } 157313569Sbrandon.potter@amd.com 157413569Sbrandon.potter@amd.com ssize_t sent_size = sendmsg(sim_fd, &msgHdr, flags); 157513569Sbrandon.potter@amd.com int local_errno = errno; 157613569Sbrandon.potter@amd.com 157713569Sbrandon.potter@amd.com /** 157813569Sbrandon.potter@amd.com * Free dynamically allocated memory. 157913569Sbrandon.potter@amd.com */ 158013569Sbrandon.potter@amd.com for (int iovIndex = 0 ; iovIndex < msgHdr.msg_iovlen; iovIndex++) { 158113569Sbrandon.potter@amd.com BufferArg *baseBuf = ( BufferArg *)bufferArray[iovIndex]; 158213569Sbrandon.potter@amd.com delete(baseBuf); 158313569Sbrandon.potter@amd.com } 158413569Sbrandon.potter@amd.com 158513569Sbrandon.potter@amd.com /** 158613569Sbrandon.potter@amd.com * Malloced above. 158713569Sbrandon.potter@amd.com */ 158813569Sbrandon.potter@amd.com free(bufferArray); 158913569Sbrandon.potter@amd.com 159013569Sbrandon.potter@amd.com return (sent_size < 0) ? -local_errno : sent_size; 159113569Sbrandon.potter@amd.com} 159213569Sbrandon.potter@amd.com 159313571Sbrandon.potter@amd.comSyscallReturn 159413571Sbrandon.potter@amd.comgetsockoptFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 159513571Sbrandon.potter@amd.com{ 159613571Sbrandon.potter@amd.com // union of all possible return value types from getsockopt 159713571Sbrandon.potter@amd.com union val { 159813571Sbrandon.potter@amd.com int i_val; 159913571Sbrandon.potter@amd.com long l_val; 160013571Sbrandon.potter@amd.com struct linger linger_val; 160113571Sbrandon.potter@amd.com struct timeval timeval_val; 160213571Sbrandon.potter@amd.com } val; 160313571Sbrandon.potter@amd.com 160413571Sbrandon.potter@amd.com int index = 0; 160513571Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 160613571Sbrandon.potter@amd.com int level = p->getSyscallArg(tc, index); 160713571Sbrandon.potter@amd.com int optname = p->getSyscallArg(tc, index); 160813571Sbrandon.potter@amd.com Addr valPtr = p->getSyscallArg(tc, index); 160913571Sbrandon.potter@amd.com Addr lenPtr = p->getSyscallArg(tc, index); 161013571Sbrandon.potter@amd.com 161113571Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 161213571Sbrandon.potter@amd.com if (!sfdp) 161313571Sbrandon.potter@amd.com return -EBADF; 161413571Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 161513571Sbrandon.potter@amd.com 161613571Sbrandon.potter@amd.com socklen_t len = sizeof(val); 161713571Sbrandon.potter@amd.com int status = getsockopt(sim_fd, level, optname, &val, &len); 161813571Sbrandon.potter@amd.com 161913571Sbrandon.potter@amd.com if (status == -1) 162013571Sbrandon.potter@amd.com return -errno; 162113571Sbrandon.potter@amd.com 162213571Sbrandon.potter@amd.com // copy val to valPtr and pass it on 162313571Sbrandon.potter@amd.com BufferArg valBuf(valPtr, sizeof(val)); 162413571Sbrandon.potter@amd.com memcpy(valBuf.bufferPtr(), &val, sizeof(val)); 162513571Sbrandon.potter@amd.com valBuf.copyOut(tc->getMemProxy()); 162613571Sbrandon.potter@amd.com 162713571Sbrandon.potter@amd.com // copy len to lenPtr and pass it on 162813571Sbrandon.potter@amd.com BufferArg lenBuf(lenPtr, sizeof(len)); 162913571Sbrandon.potter@amd.com memcpy(lenBuf.bufferPtr(), &len, sizeof(len)); 163013571Sbrandon.potter@amd.com lenBuf.copyOut(tc->getMemProxy()); 163113571Sbrandon.potter@amd.com 163213571Sbrandon.potter@amd.com return status; 163313571Sbrandon.potter@amd.com} 163413571Sbrandon.potter@amd.com 163513571Sbrandon.potter@amd.comSyscallReturn 163613571Sbrandon.potter@amd.comgetsocknameFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 163713571Sbrandon.potter@amd.com{ 163813571Sbrandon.potter@amd.com int index = 0; 163913571Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 164013571Sbrandon.potter@amd.com Addr addrPtr = p->getSyscallArg(tc, index); 164113571Sbrandon.potter@amd.com Addr lenPtr = p->getSyscallArg(tc, index); 164213571Sbrandon.potter@amd.com 164313571Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 164413571Sbrandon.potter@amd.com if (!sfdp) 164513571Sbrandon.potter@amd.com return -EBADF; 164613571Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 164713571Sbrandon.potter@amd.com 164813571Sbrandon.potter@amd.com // lenPtr is an in-out paramenter: 164913571Sbrandon.potter@amd.com // sending the address length in, conveying the final length out 165013571Sbrandon.potter@amd.com 165113571Sbrandon.potter@amd.com // Read in the value of len from the passed pointer. 165213571Sbrandon.potter@amd.com BufferArg lenBuf(lenPtr, sizeof(socklen_t)); 165313571Sbrandon.potter@amd.com lenBuf.copyIn(tc->getMemProxy()); 165413571Sbrandon.potter@amd.com socklen_t len = *(socklen_t *)lenBuf.bufferPtr(); 165513571Sbrandon.potter@amd.com 165613571Sbrandon.potter@amd.com struct sockaddr sa; 165713571Sbrandon.potter@amd.com int status = getsockname(sim_fd, &sa, &len); 165813571Sbrandon.potter@amd.com 165913571Sbrandon.potter@amd.com if (status == -1) 166013571Sbrandon.potter@amd.com return -errno; 166113571Sbrandon.potter@amd.com 166213571Sbrandon.potter@amd.com // Copy address to addrPtr and pass it on. 166313571Sbrandon.potter@amd.com BufferArg addrBuf(addrPtr, sizeof(sa)); 166413571Sbrandon.potter@amd.com memcpy(addrBuf.bufferPtr(), &sa, sizeof(sa)); 166513571Sbrandon.potter@amd.com addrBuf.copyOut(tc->getMemProxy()); 166613571Sbrandon.potter@amd.com 166713571Sbrandon.potter@amd.com // Copy len to lenPtr and pass it on. 166813571Sbrandon.potter@amd.com *(socklen_t *)lenBuf.bufferPtr() = len; 166913571Sbrandon.potter@amd.com lenBuf.copyOut(tc->getMemProxy()); 167013571Sbrandon.potter@amd.com 167113571Sbrandon.potter@amd.com return status; 167213571Sbrandon.potter@amd.com} 167313571Sbrandon.potter@amd.com 167413571Sbrandon.potter@amd.comSyscallReturn 167513571Sbrandon.potter@amd.comgetpeernameFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 167613571Sbrandon.potter@amd.com{ 167713571Sbrandon.potter@amd.com int index = 0; 167813571Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 167913571Sbrandon.potter@amd.com Addr sockAddrPtr = p->getSyscallArg(tc, index); 168013571Sbrandon.potter@amd.com Addr addrlenPtr = p->getSyscallArg(tc, index); 168113571Sbrandon.potter@amd.com 168213571Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 168313571Sbrandon.potter@amd.com if (!sfdp) 168413571Sbrandon.potter@amd.com return -EBADF; 168513571Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 168613571Sbrandon.potter@amd.com 168713571Sbrandon.potter@amd.com BufferArg bufAddrlen(addrlenPtr, sizeof(unsigned)); 168813571Sbrandon.potter@amd.com bufAddrlen.copyIn(tc->getMemProxy()); 168913571Sbrandon.potter@amd.com BufferArg bufSock(sockAddrPtr, *(unsigned *)bufAddrlen.bufferPtr()); 169013571Sbrandon.potter@amd.com 169113571Sbrandon.potter@amd.com int retval = getpeername(sim_fd, 169213571Sbrandon.potter@amd.com (struct sockaddr *)bufSock.bufferPtr(), 169313571Sbrandon.potter@amd.com (unsigned *)bufAddrlen.bufferPtr()); 169413571Sbrandon.potter@amd.com 169513571Sbrandon.potter@amd.com if (retval != -1) { 169613571Sbrandon.potter@amd.com bufSock.copyOut(tc->getMemProxy()); 169713571Sbrandon.potter@amd.com bufAddrlen.copyOut(tc->getMemProxy()); 169813571Sbrandon.potter@amd.com } 169913571Sbrandon.potter@amd.com 170013571Sbrandon.potter@amd.com return (retval == -1) ? -errno : retval; 170113571Sbrandon.potter@amd.com} 170213571Sbrandon.potter@amd.com 170313571Sbrandon.potter@amd.comSyscallReturn 170413571Sbrandon.potter@amd.comsetsockoptFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc) 170513571Sbrandon.potter@amd.com{ 170613571Sbrandon.potter@amd.com int index = 0; 170713571Sbrandon.potter@amd.com int tgt_fd = p->getSyscallArg(tc, index); 170813571Sbrandon.potter@amd.com int level = p->getSyscallArg(tc, index); 170913571Sbrandon.potter@amd.com int optname = p->getSyscallArg(tc, index); 171013571Sbrandon.potter@amd.com Addr valPtr = p->getSyscallArg(tc, index); 171113571Sbrandon.potter@amd.com socklen_t len = p->getSyscallArg(tc, index); 171213571Sbrandon.potter@amd.com 171313571Sbrandon.potter@amd.com BufferArg valBuf(valPtr, len); 171413571Sbrandon.potter@amd.com valBuf.copyIn(tc->getMemProxy()); 171513571Sbrandon.potter@amd.com 171613571Sbrandon.potter@amd.com auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]); 171713571Sbrandon.potter@amd.com if (!sfdp) 171813571Sbrandon.potter@amd.com return -EBADF; 171913571Sbrandon.potter@amd.com int sim_fd = sfdp->getSimFD(); 172013571Sbrandon.potter@amd.com 172113571Sbrandon.potter@amd.com int status = setsockopt(sim_fd, level, optname, 172213571Sbrandon.potter@amd.com (struct sockaddr *)valBuf.bufferPtr(), len); 172313571Sbrandon.potter@amd.com 172413571Sbrandon.potter@amd.com return (status == -1) ? -errno : status; 172513571Sbrandon.potter@amd.com} 172613571Sbrandon.potter@amd.com 1727