223 lines
7.0 KiB
C++
223 lines
7.0 KiB
C++
//===-- source/Host/openbsd/Host.cpp ----------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// C Includes
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#include <sys/types.h>
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#include <sys/signal.h>
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#include <sys/exec.h>
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#include <sys/proc.h>
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#include <sys/ptrace.h>
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#include <sys/sysctl.h>
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#include <sys/user.h>
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#include <stdio.h>
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Core/Module.h"
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#include "lldb/Host/Host.h"
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#include "lldb/Host/HostInfo.h"
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#include "lldb/Target/Platform.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Utility/CleanUp.h"
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#include "lldb/Utility/DataBufferHeap.h"
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#include "lldb/Utility/DataExtractor.h"
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#include "lldb/Utility/Endian.h"
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#include "lldb/Utility/Log.h"
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#include "lldb/Utility/NameMatches.h"
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#include "lldb/Utility/Status.h"
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#include "lldb/Utility/StreamString.h"
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#include "llvm/Support/Host.h"
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extern "C" {
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extern char **environ;
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}
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using namespace lldb;
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using namespace lldb_private;
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size_t Host::GetEnvironment(StringList &env) {
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char *v;
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char **var = environ;
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for (; var != NULL && *var != NULL; ++var) {
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v = strchr(*var, (int)'-');
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if (v == NULL)
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continue;
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env.AppendString(v);
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}
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return env.GetSize();
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}
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static bool
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GetOpenBSDProcessArgs(const ProcessInstanceInfoMatch *match_info_ptr,
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ProcessInstanceInfo &process_info) {
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if (process_info.ProcessIDIsValid()) {
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int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_ARGS,
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(int)process_info.GetProcessID()};
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char arg_data[8192];
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size_t arg_data_size = sizeof(arg_data);
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if (::sysctl(mib, 4, arg_data, &arg_data_size, NULL, 0) == 0) {
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DataExtractor data(arg_data, arg_data_size, endian::InlHostByteOrder(),
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sizeof(void *));
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lldb::offset_t offset = 0;
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const char *cstr;
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cstr = data.GetCStr(&offset);
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if (cstr) {
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process_info.GetExecutableFile().SetFile(cstr, false);
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if (!(match_info_ptr == NULL ||
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NameMatches(
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process_info.GetExecutableFile().GetFilename().GetCString(),
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match_info_ptr->GetNameMatchType(),
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match_info_ptr->GetProcessInfo().GetName())))
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return false;
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Args &proc_args = process_info.GetArguments();
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while (1) {
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const uint8_t *p = data.PeekData(offset, 1);
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while ((p != NULL) && (*p == '\0') && offset < arg_data_size) {
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++offset;
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p = data.PeekData(offset, 1);
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}
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if (p == NULL || offset >= arg_data_size)
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return true;
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cstr = data.GetCStr(&offset);
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if (cstr)
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proc_args.AppendArgument(llvm::StringRef(cstr));
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else
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return true;
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}
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}
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}
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}
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return false;
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}
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static bool GetOpenBSDProcessCPUType(ProcessInstanceInfo &process_info) {
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if (process_info.ProcessIDIsValid()) {
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process_info.GetArchitecture() =
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HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
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return true;
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}
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process_info.GetArchitecture().Clear();
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return false;
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}
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static bool GetOpenBSDProcessUserAndGroup(ProcessInstanceInfo &process_info) {
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struct kinfo_proc proc_kinfo;
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size_t proc_kinfo_size;
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if (process_info.ProcessIDIsValid()) {
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int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID,
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(int)process_info.GetProcessID()};
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proc_kinfo_size = sizeof(struct kinfo_proc);
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if (::sysctl(mib, 4, &proc_kinfo, &proc_kinfo_size, NULL, 0) == 0) {
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if (proc_kinfo_size > 0) {
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process_info.SetParentProcessID(proc_kinfo.p_ppid);
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process_info.SetUserID(proc_kinfo.p_ruid);
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process_info.SetGroupID(proc_kinfo.p_rgid);
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process_info.SetEffectiveUserID(proc_kinfo.p_uid);
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process_info.SetEffectiveGroupID(proc_kinfo.p_gid);
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return true;
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}
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}
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}
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process_info.SetParentProcessID(LLDB_INVALID_PROCESS_ID);
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process_info.SetUserID(UINT32_MAX);
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process_info.SetGroupID(UINT32_MAX);
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process_info.SetEffectiveUserID(UINT32_MAX);
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process_info.SetEffectiveGroupID(UINT32_MAX);
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return false;
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}
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uint32_t Host::FindProcesses(const ProcessInstanceInfoMatch &match_info,
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ProcessInstanceInfoList &process_infos) {
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std::vector<struct kinfo_proc> kinfos;
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int mib[3] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL};
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size_t pid_data_size = 0;
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if (::sysctl(mib, 3, NULL, &pid_data_size, NULL, 0) != 0)
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return 0;
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// Add a few extra in case a few more show up
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const size_t estimated_pid_count =
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(pid_data_size / sizeof(struct kinfo_proc)) + 10;
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kinfos.resize(estimated_pid_count);
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pid_data_size = kinfos.size() * sizeof(struct kinfo_proc);
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if (::sysctl(mib, 3, &kinfos[0], &pid_data_size, NULL, 0) != 0)
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return 0;
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const size_t actual_pid_count = (pid_data_size / sizeof(struct kinfo_proc));
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bool all_users = match_info.GetMatchAllUsers();
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const ::pid_t our_pid = getpid();
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const uid_t our_uid = getuid();
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for (size_t i = 0; i < actual_pid_count; i++) {
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const struct kinfo_proc &kinfo = kinfos[i];
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const bool kinfo_user_matches = (all_users || (kinfo.p_ruid == our_uid) ||
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// Special case, if lldb is being run as
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// root we can attach to anything.
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(our_uid == 0));
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if (kinfo_user_matches == false || // Make sure the user is acceptable
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kinfo.p_pid == our_pid || // Skip this process
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kinfo.p_pid == 0 || // Skip kernel (kernel pid is zero)
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kinfo.p_stat == SZOMB || // Zombies are bad, they like brains...
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kinfo.p_psflags & PS_TRACED || // Being debugged?
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kinfo.p_flag & P_WEXIT) // Working on exiting
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continue;
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ProcessInstanceInfo process_info;
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process_info.SetProcessID(kinfo.p_pid);
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process_info.SetParentProcessID(kinfo.p_ppid);
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process_info.SetUserID(kinfo.p_ruid);
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process_info.SetGroupID(kinfo.p_rgid);
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process_info.SetEffectiveUserID(kinfo.p_svuid);
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process_info.SetEffectiveGroupID(kinfo.p_svgid);
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// Make sure our info matches before we go fetch the name and cpu type
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if (match_info.Matches(process_info) &&
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GetOpenBSDProcessArgs(&match_info, process_info)) {
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GetOpenBSDProcessCPUType(process_info);
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if (match_info.Matches(process_info))
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process_infos.Append(process_info);
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}
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}
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return process_infos.GetSize();
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}
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bool Host::GetProcessInfo(lldb::pid_t pid, ProcessInstanceInfo &process_info) {
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process_info.SetProcessID(pid);
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if (GetOpenBSDProcessArgs(NULL, process_info)) {
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// should use libprocstat instead of going right into sysctl?
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GetOpenBSDProcessCPUType(process_info);
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GetOpenBSDProcessUserAndGroup(process_info);
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return true;
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}
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process_info.Clear();
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return false;
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}
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Status Host::ShellExpandArguments(ProcessLaunchInfo &launch_info) {
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return Status("unimplemented");
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}
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