Example #1
0
static bool
GetFreeBSDProcessUserAndGroup(ProcessInstanceInfo &process_info)
{
    struct kinfo_proc proc_kinfo;
    size_t proc_kinfo_size;

    if (process_info.ProcessIDIsValid())
    {
        int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID,
            (int)process_info.GetProcessID() };
        proc_kinfo_size = sizeof(struct kinfo_proc);

        if (::sysctl (mib, 4, &proc_kinfo, &proc_kinfo_size, NULL, 0) == 0)
        {
            if (proc_kinfo_size > 0)
            {
                process_info.SetParentProcessID (proc_kinfo.ki_ppid);
                process_info.SetUserID (proc_kinfo.ki_ruid);
                process_info.SetGroupID (proc_kinfo.ki_rgid);
                process_info.SetEffectiveUserID (proc_kinfo.ki_uid);
                if (proc_kinfo.ki_ngroups > 0)
                    process_info.SetEffectiveGroupID (proc_kinfo.ki_groups[0]);
                else
                    process_info.SetEffectiveGroupID (UINT32_MAX);
                return true;
            }
        }
    }
    process_info.SetParentProcessID (LLDB_INVALID_PROCESS_ID);
    process_info.SetUserID (UINT32_MAX);
    process_info.SetGroupID (UINT32_MAX);
    process_info.SetEffectiveUserID (UINT32_MAX);
    process_info.SetEffectiveGroupID (UINT32_MAX);
    return false;
}
Example #2
0
static bool
GetNetBSDProcessUserAndGroup(ProcessInstanceInfo &process_info)
{
    ::kvm_t *kdp;
    char errbuf[_POSIX2_LINE_MAX]; /* XXX: error string unused */

    struct ::kinfo_proc2 *proc_kinfo;
    const int pid = process_info.GetProcessID();
    int nproc;

    if (!process_info.ProcessIDIsValid())
        goto error;

    if ((kdp = ::kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf)) == NULL)
        goto error;

    if ((proc_kinfo = ::kvm_getproc2(kdp, KERN_PROC_PID, pid,
                                     sizeof(struct ::kinfo_proc2),
                                     &nproc)) == NULL) {
        ::kvm_close(kdp);
        goto error;
    }

    if (nproc < 1) {
        ::kvm_close(kdp); /* XXX: we don't check for error here */
        goto error;
    }

    process_info.SetParentProcessID (proc_kinfo->p_ppid);
    process_info.SetUserID (proc_kinfo->p_ruid);
    process_info.SetGroupID (proc_kinfo->p_rgid);
    process_info.SetEffectiveUserID (proc_kinfo->p_uid);
    process_info.SetEffectiveGroupID (proc_kinfo->p_gid);

    ::kvm_close(kdp); /* XXX: we don't check for error here */

    return true;

error:
    process_info.SetParentProcessID (LLDB_INVALID_PROCESS_ID);
    process_info.SetUserID (UINT32_MAX);
    process_info.SetGroupID (UINT32_MAX);
    process_info.SetEffectiveUserID (UINT32_MAX);
    process_info.SetEffectiveGroupID (UINT32_MAX);
    return false;
}
static void
GetLinuxProcessUserAndGroup (lldb::pid_t pid, ProcessInstanceInfo &process_info, lldb::pid_t &tracerpid)
{
    tracerpid = 0;
    uint32_t rUid = UINT32_MAX;     // Real User ID
    uint32_t eUid = UINT32_MAX;     // Effective User ID
    uint32_t rGid = UINT32_MAX;     // Real Group ID
    uint32_t eGid = UINT32_MAX;     // Effective Group ID

    // Read the /proc/$PID/status file and parse the Uid:, Gid:, and TracerPid: fields.
    lldb::DataBufferSP buf_sp = ReadProcPseudoFile (pid, "status");

    static const char uid_token[] = "Uid:";
    char *buf_uid = strstr ((char *)buf_sp->GetBytes(), uid_token);
    if (buf_uid)
    {
        // Real, effective, saved set, and file system UIDs. Read the first two.
        buf_uid += sizeof(uid_token);
        rUid = strtol (buf_uid, &buf_uid, 10);
        eUid = strtol (buf_uid, &buf_uid, 10);
    }

    static const char gid_token[] = "Gid:";
    char *buf_gid = strstr ((char *)buf_sp->GetBytes(), gid_token);
    if (buf_gid)
    {
        // Real, effective, saved set, and file system GIDs. Read the first two.
        buf_gid += sizeof(gid_token);
        rGid = strtol (buf_gid, &buf_gid, 10);
        eGid = strtol (buf_gid, &buf_gid, 10);
    }

    static const char tracerpid_token[] = "TracerPid:";
    char *buf_tracerpid = strstr((char *)buf_sp->GetBytes(), tracerpid_token);
    if (buf_tracerpid)
    {
        // Tracer PID. 0 if we're not being debugged.
        buf_tracerpid += sizeof(tracerpid_token);
        tracerpid = strtol (buf_tracerpid, &buf_tracerpid, 10);
    }

    process_info.SetUserID (rUid);
    process_info.SetEffectiveUserID (eUid);
    process_info.SetGroupID (rGid);
    process_info.SetEffectiveGroupID (eGid);
}
Example #4
0
File: Host.cpp Project: emaste/lldb
static bool GetStatusInfo(::pid_t Pid, ProcessInstanceInfo &ProcessInfo,
                          ProcessState &State, ::pid_t &TracerPid) {
  auto BufferOrError = getProcFile(Pid, "status");
  if (!BufferOrError)
    return false;

  llvm::StringRef Rest = BufferOrError.get()->getBuffer();
  while(!Rest.empty()) {
    llvm::StringRef Line;
    std::tie(Line, Rest) = Rest.split('\n');

    if (Line.consume_front("Gid:")) {
      // Real, effective, saved set, and file system GIDs. Read the first two.
      Line = Line.ltrim();
      uint32_t RGid, EGid;
      Line.consumeInteger(10, RGid);
      Line = Line.ltrim();
      Line.consumeInteger(10, EGid);

      ProcessInfo.SetGroupID(RGid);
      ProcessInfo.SetEffectiveGroupID(EGid);
    } else if (Line.consume_front("Uid:")) {
      // Real, effective, saved set, and file system UIDs. Read the first two.
      Line = Line.ltrim();
      uint32_t RUid, EUid;
      Line.consumeInteger(10, RUid);
      Line = Line.ltrim();
      Line.consumeInteger(10, EUid);

      ProcessInfo.SetUserID(RUid);
      ProcessInfo.SetEffectiveUserID(EUid);
    } else if (Line.consume_front("PPid:")) {
      ::pid_t PPid;
      Line.ltrim().consumeInteger(10, PPid);
      ProcessInfo.SetParentProcessID(PPid);
    } else if (Line.consume_front("State:")) {
      char S = Line.ltrim().front();
      switch (S) {
      case 'R':
        State = ProcessState::Running;
        break;
      case 'S':
        State = ProcessState::Sleeping;
        break;
      case 'D':
        State = ProcessState::DiskSleep;
        break;
      case 'Z':
        State = ProcessState::Zombie;
        break;
      case 'T':
        State = ProcessState::TracedOrStopped;
        break;
      case 'W':
        State = ProcessState::Paging;
        break;
      }
    } else if (Line.consume_front("TracerPid:")) {
      Line = Line.ltrim();
      Line.consumeInteger(10, TracerPid);
    }
  }
  return true;
}