path: root/main.cxx

// systemtap translator/driver
// Copyright (C) 2005-2010 Red Hat Inc.
// Copyright (C) 2005 IBM Corp.
// Copyright (C) 2006 Intel Corporation.
//
// This file is part of systemtap, and is free software.  You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.

#include "config.h"
#include "staptree.h"
#include "parse.h"
#include "elaborate.h"
#include "translate.h"
#include "buildrun.h"
#include "session.h"
#include "hash.h"
#include "cache.h"
#include "util.h"
#include "coveragedb.h"
#include "git_version.h"
#include "rpm_finder.h"
#include "task_finder.h"

#include "sys/sdt.h"

#include <iostream>
#include <fstream>
#include <sstream>
#include <cerrno>
#include <cstdlib>
#include <limits.h>

extern "C" {
#include <glob.h>
#include <unistd.h>
#include <signal.h>
#include <sys/utsname.h>
#include <sys/times.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <time.h>
#include <elfutils/libdwfl.h>
#include <getopt.h>
#include <unistd.h>
}

using namespace std;

#define PATH_TBD string("__TBD__")
extern const char* morehelp;

void
version ()
{
  clog
    << "SystemTap translator/driver "
    << "(version " << VERSION << "/" << dwfl_version (NULL)
    << " " << GIT_MESSAGE << ")" << endl
    << "Copyright (C) 2005-2010 Red Hat, Inc. and others" << endl
    << "This is free software; see the source for copying conditions." << endl;
}




void
usage (systemtap_session& s, int exitcode)
{
  version ();
  clog
    << endl
    << "Usage: stap [options] FILE         Run script in file."
    << endl
    << "   or: stap [options] -            Run script on stdin."
    << endl
    << "   or: stap [options] -e SCRIPT    Run given script."
    << endl
    << "   or: stap [options] -l PROBE     List matching probes."
    << endl
    << "   or: stap [options] -L PROBE     List matching probes and local variables."
    << endl
    << endl
    << "Options:" << endl
    << "   --         end of translator options, script options follow" << endl
    << "   -h --help  show help" << endl
    << "   -V         show version" << endl
    << "   -p NUM     stop after pass NUM 1-5, instead of " << s.last_pass << endl
    << "              (parse, elaborate, translate, compile, run)" << endl
    << "   -v         add verbosity to all passes" << endl
    << "   --vp {N}+  add per-pass verbosity [";
  for (unsigned i=0; i<5; i++)
    clog << (s.perpass_verbose[i] <= 9 ? s.perpass_verbose[i] : 9);
  clog 
    << "]" << endl
    << "   -k         keep temporary directory" << endl
    << "   -u         unoptimized translation" << (s.unoptimized ? " [set]" : "") << endl
    << "   -w         suppress warnings" << (s.suppress_warnings ? " [set]" : "") << endl
    << "   -W         turn warnings into errors" << (s.panic_warnings ? " [set]" : "") << endl
    << "   -g         guru mode" << (s.guru_mode ? " [set]" : "") << endl
    << "   -P         prologue-searching for function probes"
    << (s.prologue_searching ? " [set]" : "") << endl
    << "   -b         bulk (percpu file) mode" << (s.bulk_mode ? " [set]" : "") << endl
    << "   -s NUM     buffer size in megabytes, instead of " << s.buffer_size << endl
    << "   -I DIR     look in DIR for additional .stp script files";
  if (s.include_path.size() == 0)
    clog << endl;
  else
    clog << ", in addition to" << endl;
  for (unsigned i=0; i<s.include_path.size(); i++)
    clog << "              " << s.include_path[i] << endl;
  clog
    << "   -D NM=VAL  emit macro definition into generated C code" << endl
    << "   -B NM=VAL  pass option to kbuild make" << endl
    << "   -R DIR     look in DIR for runtime, instead of" << endl
    << "              " << s.runtime_path << endl
    << "   -r DIR     cross-compile to kernel with given build tree; or else" << endl
    << "   -r RELEASE cross-compile to kernel /lib/modules/RELEASE/build, instead of" << endl
    << "              " << s.kernel_build_tree << endl
    << "   -a ARCH    cross-compile to given architecture, instead of " << s.architecture << endl
    << "   -m MODULE  set probe module name, instead of " << endl
    << "              " << s.module_name << endl
    << "   -o FILE    send script output to file, instead of stdout. This supports" << endl
    << "              strftime(3) formats for FILE" << endl
    << "   -c CMD     start the probes, run CMD, and exit when it finishes" << endl
    << "   -x PID     sets target() to PID" << endl
    << "   -F         run as on-file flight recorder with -o." << endl
    << "              run as on-memory flight recorder without -o." << endl
    << "   -S size[,n] set maximum of the size and the number of files." << endl
    << "   -d OBJECT  add unwind/symbol data for OBJECT file";
  if (s.unwindsym_modules.size() == 0)
    clog << endl;
  else
    clog << ", in addition to" << endl;
  {
    vector<string> syms (s.unwindsym_modules.begin(), s.unwindsym_modules.end());
    for (unsigned i=0; i<syms.size(); i++)
      clog << "              " << syms[i] << endl;
  }
  clog
    << "   -t         collect probe timing information" << endl
#ifdef HAVE_LIBSQLITE3
    << "   -q         generate information on tapset coverage" << endl
#endif /* HAVE_LIBSQLITE3 */
    << "   --unprivileged" << endl
    << "              restrict usage to features available to unprivileged users" << endl
#if 0 /* PR6864: disable temporarily; should merge with -d somehow */
    << "   --kelf     make do with symbol table from vmlinux" << endl
    << "   --kmap[=FILE]" << endl
    << "              make do with symbol table from nm listing" << endl
#endif
  // Formerly present --ignore-{vmlinux,dwarf} options are for testsuite use
  // only, and don't belong in the eyesight of a plain user.
    << "   --compatible=VERSION" << endl
    << "              suppress incompatible language/tapset changes beyond VERSION," << endl
    << "              instead of " << s.compatible << endl
    << "   --skip-badvars" << endl
    << "              substitute zero for bad context $variables" << endl
    << endl
    ;

  time_t now;
  time (& now);
  struct tm* t = localtime (& now);
  if (t && t->tm_mon*3 + t->tm_mday*173 == 0xb6)
    clog << morehelp << endl;

  exit (exitcode);
}


static void uniq_list(list<string>& l)
{
	list<string> r;
	set<string> s;

	for (list<string>::iterator i = l.begin(); i != l.end(); ++i) {
		s.insert(*i);
	}

	for (list<string>::iterator i = l.begin(); i != l.end(); ++i) {
		if (s.find(*i) != s.end()) {
			s.erase(*i);
			r.push_back(*i);
		}
	}

	l.clear();
	l.assign(r.begin(), r.end());
}

static void
printscript(systemtap_session& s, ostream& o)
{
  if (s.listing_mode)
    {
      // We go through some heroic measures to produce clean output.
      // Record the alias and probe pointer as <name, set<derived_probe *> >
      map<string,set<derived_probe *> > probe_list;

      // Pre-process the probe alias
      for (unsigned i=0; i<s.probes.size(); i++)
        {
          if (pending_interrupts) return;

          derived_probe* p = s.probes[i];
          // NB: p->basest() is not so interesting;
          // p->almost_basest() doesn't quite work, so ...
          vector<probe*> chain;
          p->collect_derivation_chain (chain);
          probe* second = (chain.size()>1) ? chain[chain.size()-2] : chain[0];

          #if 0  // dump everything about the derivation chain
          p->printsig(cerr); cerr << endl;
          cerr << "chain[" << chain.size() << "]:" << endl;
          for (unsigned j=0; j<chain.size(); j++)
            {
              cerr << "  [" << j << "]: " << endl;
              cerr << "\tlocations[" << chain[j]->locations.size() << "]:" << endl;
              for (unsigned k=0; k<chain[j]->locations.size(); k++)
                {
                  cerr << "\t  [" << k << "]: ";
                  chain[j]->locations[k]->print(cerr);
                  cerr << endl;
                }
              const probe_alias *a = chain[j]->get_alias();
              if (a)
                {
                  cerr << "\taliases[" << a->alias_names.size() << "]:" << endl;
                  for (unsigned k=0; k<a->alias_names.size(); k++)
                    {
                      cerr << "\t  [" << k << "]: ";
                      a->alias_names[k]->print(cerr);
                      cerr << endl;
                    }
                }
            }
          #endif

          stringstream tmps;
          const probe_alias *a = second->get_alias();
          if (a)
            {
              assert (a->alias_names.size() >= 1);
              a->alias_names[0]->print(tmps); // XXX: [0] is arbitrary; perhaps print all
            }
          else
            {
              assert (second->locations.size() >= 1);
              second->locations[0]->print(tmps); // XXX: [0] is less arbitrary here, but still ...
            }
          string pp = tmps.str();

          // Now duplicate-eliminate.  An alias may have expanded to
          // several actual derived probe points, but we only want to
          // print the alias head name once.
          probe_list[pp].insert(p);
        }

      // print probe name and variables if there
      for (map<string, set<derived_probe *> >::iterator it=probe_list.begin(); it!=probe_list.end(); ++it)
        {
          o << it->first; // probe name or alias

          // Print the locals and arguments for -L mode only
          if (s.listing_mode_vars)
            {
              map<string,unsigned> var_count; // format <"name:type",count>
              map<string,unsigned> arg_count;
              list<string> var_list;
              list<string> arg_list;
              // traverse set<derived_probe *> to collect all locals and arguments
              for (set<derived_probe *>::iterator ix=it->second.begin(); ix!=it->second.end(); ++ix)
                {
                  derived_probe* p = *ix;
                  // collect available locals of the probe
                  for (unsigned j=0; j<p->locals.size(); j++)
                    {
                      stringstream tmps;
                      vardecl* v = p->locals[j];
                      v->printsig (tmps);
                      var_count[tmps.str()]++;
		      var_list.push_back(tmps.str());
                    }
                  // collect arguments of the probe if there
                  list<string> arg_set;
                  p->getargs(arg_set);
                  for (list<string>::iterator ia=arg_set.begin(); ia!=arg_set.end(); ++ia) {
                    arg_count[*ia]++;
                    arg_list.push_back(*ia);
		  }
                }

	      uniq_list(arg_list);
	      uniq_list(var_list);

              // print the set-intersection only
              for (list<string>::iterator ir=var_list.begin(); ir!=var_list.end(); ++ir)
                if (var_count.find(*ir)->second == it->second.size()) // print locals
                  o << " " << *ir;
              for (list<string>::iterator ir=arg_list.begin(); ir!=arg_list.end(); ++ir)
                if (arg_count.find(*ir)->second == it->second.size()) // print arguments
                  o << " " << *ir;
            }
          o << endl;
        }
    }
  else
    {
      if (s.embeds.size() > 0)
        o << "# global embedded code" << endl;
      for (unsigned i=0; i<s.embeds.size(); i++)
        {
          if (pending_interrupts) return;
          embeddedcode* ec = s.embeds[i];
          ec->print (o);
          o << endl;
        }

      if (s.globals.size() > 0)
        o << "# globals" << endl;
      for (unsigned i=0; i<s.globals.size(); i++)
        {
          if (pending_interrupts) return;
          vardecl* v = s.globals[i];
          v->printsig (o);
          if (s.verbose && v->init)
            {
              o << " = ";
              v->init->print(o);
            }
          o << endl;
        }

      if (s.functions.size() > 0)
        o << "# functions" << endl;
      for (map<string,functiondecl*>::iterator it = s.functions.begin(); it != s.functions.end(); it++)
        {
          if (pending_interrupts) return;
          functiondecl* f = it->second;
          f->printsig (o);
          o << endl;
          if (f->locals.size() > 0)
            o << "  # locals" << endl;
          for (unsigned j=0; j<f->locals.size(); j++)
            {
              vardecl* v = f->locals[j];
              o << "  ";
              v->printsig (o);
              o << endl;
            }
          if (s.verbose)
            {
              f->body->print (o);
              o << endl;
            }
        }

      if (s.probes.size() > 0)
        o << "# probes" << endl;
      for (unsigned i=0; i<s.probes.size(); i++)
        {
          if (pending_interrupts) return;
          derived_probe* p = s.probes[i];
          p->printsig (o);
          o << endl;
          if (p->locals.size() > 0)
            o << "  # locals" << endl;
          for (unsigned j=0; j<p->locals.size(); j++)
            {
              vardecl* v = p->locals[j];
              o << "  ";
              v->printsig (o);
              o << endl;
            }
          if (s.verbose)
            {
              p->body->print (o);
              o << endl;
            }
        }
    }
}


int pending_interrupts;

extern "C"
void handle_interrupt (int sig)
{
  kill_stap_spawn(sig);
  pending_interrupts ++;
  if (pending_interrupts > 1) // XXX: should be configurable? time-based?
    {
      char msg[] = "Too many interrupts received, exiting.\n";
      int rc = write (2, msg, sizeof(msg)-1);
      if (rc) {/* Do nothing; we don't care if our last gasp went out. */ ;}
      _exit (1);
    }
}


void
setup_signals (sighandler_t handler)
{
  struct sigaction sa;

  sa.sa_handler = handler;
  sigemptyset (&sa.sa_mask);
  if (handler != SIG_IGN)
    {
      sigaddset (&sa.sa_mask, SIGHUP);
      sigaddset (&sa.sa_mask, SIGPIPE);
      sigaddset (&sa.sa_mask, SIGINT);
      sigaddset (&sa.sa_mask, SIGTERM);
    }
  sa.sa_flags = SA_RESTART;

  sigaction (SIGHUP, &sa, NULL);
  sigaction (SIGPIPE, &sa, NULL);
  sigaction (SIGINT, &sa, NULL);
  sigaction (SIGTERM, &sa, NULL);
}

void setup_kernel_release (systemtap_session &s, const char* kstr) 
{
    if (kstr[0] == '/') // fully specified path
      {
        s.kernel_build_tree = kstr;
        string version_file_name = s.kernel_build_tree + "/include/config/kernel.release";
        // The file include/config/kernel.release within the
        // build tree is used to pull out the version information
        ifstream version_file (version_file_name.c_str());
        if (version_file.fail ())
          {
            cerr << "Missing " << version_file_name << endl;
            exit(1);
          }
        else
          {
            char c;
            s.kernel_release = "";
            while (version_file.get(c) && c != '\n')
              s.kernel_release.push_back(c);
          }
      }
    else
      {
        s.kernel_release = string (kstr);
        s.kernel_build_tree = "/lib/modules/" + s.kernel_release + "/build";
      }
}


int parse_kernel_config (systemtap_session &s)
{
  // PR10702: pull config options
  string kernel_config_file = s.kernel_build_tree + "/.config";
  struct stat st;
  int rc = stat(kernel_config_file.c_str(), &st);
  if (rc != 0)
    {
	clog << "Checking \"" << kernel_config_file << "\" failed: " << strerror(errno) << endl
	     << "Ensure kernel development headers & makefiles are installed." << endl;
	return rc;
    }

  ifstream kcf (kernel_config_file.c_str());
  string line;
  while (getline (kcf, line))
    {
      if (!startswith(line, "CONFIG_")) continue;
      size_t off = line.find('=');
      if (off == string::npos) continue;
      string key = line.substr(0, off);
      string value = line.substr(off+1, string::npos);
      s.kernel_config[key] = value;
    }
  if (s.verbose > 2)
    clog << "Parsed kernel \"" << kernel_config_file << "\", number of tuples: " << s.kernel_config.size() << endl;
  
  kcf.close();
  return 0;
}


int parse_kernel_exports (systemtap_session &s)
{
  string kernel_exports_file = s.kernel_build_tree + "/Module.symvers";
  struct stat st;
  int rc = stat(kernel_exports_file.c_str(), &st);
  if (rc != 0)
    {
	clog << "Checking \"" << kernel_exports_file << "\" failed: " << strerror(errno) << endl
	     << "Ensure kernel development headers & makefiles are installed." << endl;
	return rc;
    }

  ifstream kef (kernel_exports_file.c_str());
  string line;
  while (getline (kef, line))
    {
      vector<string> tokens;
      tokenize (line, tokens, "\t");
      if (tokens.size() == 4 &&
          tokens[2] == "vmlinux" &&
          tokens[3].substr(0,13) == string("EXPORT_SYMBOL"))
        s.kernel_exports.insert (tokens[1]);
    }
  if (s.verbose > 2)
    clog << "Parsed kernel \"" << kernel_exports_file << "\", number of vmlinux exports: " << s.kernel_exports.size() << endl;
  
  kef.close();
  return 0;
}


/*
 * Returns a string describing memory resource usage.
 * Since it seems getrusage() doesn't maintain the mem related fields,
 * this routine parses /proc/self/statm to get the statistics.
 */
static string
getmemusage ()
{
  static long sz = sysconf(_SC_PAGESIZE);

  long pages, kb;
  ostringstream oss;
  ifstream statm("/proc/self/statm");
  statm >> pages;
  kb = pages * sz / 1024;
  oss << "using " << kb << "virt/";
  statm >> pages;
  kb = pages * sz / 1024;
  oss << kb << "res/";
  statm >> pages;
  kb = pages * sz / 1024;
  oss << kb << "shr kb, ";
  return oss.str();
}

int
main (int argc, char * const argv [])
{
  string cmdline_script; // -e PROGRAM
  string script_file; // FILE
  bool have_script = false;
  bool save_module = false;

  // Initialize defaults
  systemtap_session s;
  struct utsname buf;
  (void) uname (& buf);
  s.kernel_release = string (buf.release);
  s.kernel_build_tree = "/lib/modules/" + s.kernel_release + "/build";

  // PR4186: Copy logic from coreutils uname (uname -i) to squash
  // i?86->i386.  Actually, copy logic from linux top-level Makefile
  // to squash uname -m -> $(SUBARCH).

  string machine = buf.machine;
  if (machine == "i486") machine = "i386";
  else if (machine == "i586") machine = "i386";
  else if (machine == "i686") machine = "i386";
  else if (machine == "sun4u") machine = "sparc64";
  else if (machine.substr(0,3) == "arm") machine = "arm";
  else if (machine == "sa110") machine = "arm";
  else if (machine == "s390x") machine = "s390";
  else if (machine.substr(0,3) == "ppc") machine = "powerpc";
  else if (machine.substr(0,4) == "mips") machine = "mips";
  else if (machine.substr(0,3) == "sh2") machine = "sh";
  else if (machine.substr(0,3) == "sh3") machine = "sh";
  else if (machine.substr(0,3) == "sh4") machine = "sh";

  s.architecture = machine;
  for (unsigned i=0; i<5; i++) s.perpass_verbose[i]=0;
  s.timing = false;
  s.guru_mode = false;
  s.bulk_mode = false;
  s.unoptimized = false;
  s.suppress_warnings = false;
  s.panic_warnings = false;
  s.listing_mode = false;
  s.listing_mode_vars = false;

#ifdef ENABLE_PROLOGUES
  s.prologue_searching = true;
#else
  s.prologue_searching = false;
#endif

  s.buffer_size = 0;
  s.last_pass = 5;
  s.module_name = "stap_" + lex_cast(getpid());
  s.stapconf_name = "stapconf_" + lex_cast(getpid()) + ".h";
  s.output_file = ""; // -o FILE
  s.keep_tmpdir = false;
  s.cmd = "";
  s.target_pid = 0;
  s.symtab = false;
  s.use_cache = true;
  s.use_script_cache = true;
  s.poison_cache = false;
  s.tapset_compile_coverage = false;
  s.need_uprobes = false;
  s.consult_symtab = false;
  s.ignore_vmlinux = false;
  s.ignore_dwarf = false;
  s.load_only = false;
  s.skip_badvars = false;
  s.unprivileged = false;
  s.omit_werror = false;
  s.compatible = VERSION; // XXX: perhaps also process GIT_SHAID if available?
  bool client_options = false;
  string client_options_disallowed;

  // Location of our signing certificate.
  // If we're root, use the database in SYSCONFDIR, otherwise
  // use the one in our $HOME directory.  */
  if (getuid() == 0)
    s.cert_db_path = SYSCONFDIR "/systemtap/ssl/server";
  else
    s.cert_db_path = getenv("HOME") + string ("/.systemtap/ssl/server");

  const char* s_p = getenv ("SYSTEMTAP_TAPSET");
  if (s_p != NULL)
  {
    s.include_path.push_back (s_p);
  }
  else
  {
    s.include_path.push_back (string(PKGDATADIR) + "/tapset");
  }

  const char* s_r = getenv ("SYSTEMTAP_RUNTIME");
  if (s_r != NULL)
    s.runtime_path = s_r;
  else
    s.runtime_path = string(PKGDATADIR) + "/runtime";

  const char* s_d = getenv ("SYSTEMTAP_DIR");
  if (s_d != NULL)
    s.data_path = s_d;
  else
    s.data_path = get_home_directory() + string("/.systemtap");
  if (create_dir(s.data_path.c_str()) == 1)
    {
      const char* e = strerror (errno);
      if (! s.suppress_warnings)
        cerr << "Warning: failed to create systemtap data directory (\""
             << s.data_path << "\"): " << e
             << ", disabling cache support." << endl;
      s.use_cache = s.use_script_cache = false;
    }

  if (s.use_cache)
    {
      s.cache_path = s.data_path + "/cache";
      if (create_dir(s.cache_path.c_str()) == 1)
        {
	  const char* e = strerror (errno);
          if (! s.suppress_warnings)
            cerr << "Warning: failed to create cache directory (\""
                 << s.cache_path << "\"): " << e
                 << ", disabling cache support." << endl;
	  s.use_cache = s.use_script_cache = false;
	}
    }

  // Location of our signing certificate.
  // If we're root, use the database in SYSCONFDIR, otherwise
  // use the one in s.data_path.  */
  if (geteuid() == 0)
    s.cert_db_path = SYSCONFDIR "/systemtap/ssl/server";
  else
    s.cert_db_path = s.data_path + "/ssl/server";

  const char* s_tc = getenv ("SYSTEMTAP_COVERAGE");
  if (s_tc != NULL)
    s.tapset_compile_coverage = true;

  const char* s_kr = getenv ("SYSTEMTAP_RELEASE");
  if (s_kr != NULL) {
    setup_kernel_release(s, s_kr);
  }

  while (true)
    {
      int long_opt;
      char * num_endptr;
#define LONG_OPT_KELF 1
#define LONG_OPT_KMAP 2
#define LONG_OPT_IGNORE_VMLINUX 3
#define LONG_OPT_IGNORE_DWARF 4
#define LONG_OPT_VERBOSE_PASS 5
#define LONG_OPT_SKIP_BADVARS 6
#define LONG_OPT_UNPRIVILEGED 7
#define LONG_OPT_OMIT_WERROR 8
#define LONG_OPT_CLIENT_OPTIONS 9
#define LONG_OPT_HELP 10
#define LONG_OPT_DISABLE_CACHE 11
#define LONG_OPT_POISON_CACHE 12
#define LONG_OPT_CLEAN_CACHE 13
#define LONG_OPT_COMPATIBLE 14
      // NB: also see find_hash(), usage(), switch stmt below, stap.1 man page
      static struct option long_options[] = {
        { "kelf", 0, &long_opt, LONG_OPT_KELF },
        { "kmap", 2, &long_opt, LONG_OPT_KMAP },
        { "ignore-vmlinux", 0, &long_opt, LONG_OPT_IGNORE_VMLINUX },
        { "ignore-dwarf", 0, &long_opt, LONG_OPT_IGNORE_DWARF },
	{ "skip-badvars", 0, &long_opt, LONG_OPT_SKIP_BADVARS },
        { "vp", 1, &long_opt, LONG_OPT_VERBOSE_PASS },
        { "unprivileged", 0, &long_opt, LONG_OPT_UNPRIVILEGED },
#define OWE5 "tter"
#define OWE1 "uild-"
#define OWE6 "fu-kb"
#define OWE2 "i-kno"
#define OWE4 "st"
#define OWE3 "w-be"
        { OWE4 OWE6 OWE1 OWE2 OWE3 OWE5, 0, &long_opt, LONG_OPT_OMIT_WERROR },
        { "client-options", 0, &long_opt, LONG_OPT_CLIENT_OPTIONS },
        { "help", 0, &long_opt, LONG_OPT_HELP },
        { "disable-cache", 0, &long_opt, LONG_OPT_DISABLE_CACHE },
        { "poison-cache", 0, &long_opt, LONG_OPT_POISON_CACHE },
        { "clean-cache", 0, &long_opt, LONG_OPT_CLEAN_CACHE },
        { "compatible", 1, &long_opt, LONG_OPT_COMPATIBLE },
        { NULL, 0, NULL, 0 }
      };
      int grc = getopt_long (argc, argv, "hVvtp:I:e:o:R:r:a:m:kgPc:x:D:bs:uqwl:d:L:FS:B:W",
                             long_options, NULL);
      if (grc < 0)
        break;
      switch (grc)
        {
        case 'V':
          version ();
          exit (0);

        case 'v':
          for (unsigned i=0; i<5; i++)
            s.perpass_verbose[i] ++;
	  break;

        case 't':
	  s.timing = true;
	  break;

        case 'w':
	  s.suppress_warnings = true;
	  break;

        case 'W':
	  s.panic_warnings = true;
	  break;

        case 'p':
          s.last_pass = (int)strtoul(optarg, &num_endptr, 10);
          if (*num_endptr != '\0' || s.last_pass < 1 || s.last_pass > 5)
            {
              cerr << "Invalid pass number (should be 1-5)." << endl;
              exit (1);
            }
          if (s.listing_mode && s.last_pass != 2)
            {
              cerr << "Listing (-l) mode implies pass 2." << endl;
              exit (1);
            }
          break;

        case 'I':
	  if (client_options)
	    client_options_disallowed += client_options_disallowed.empty () ? "-I" : ", -I";
          s.include_path.push_back (string (optarg));
          break;

        case 'd':
          {
            // At runtime user module names are resolved through their
            // canonical (absolute) path.
            const char *mpath = canonicalize_file_name (optarg);
            if (mpath == NULL) // Must be a kernel module name
              mpath = optarg;
            s.unwindsym_modules.insert (string (mpath));
            // PR10228: trigger task-finder logic early if -d /USER-MODULE/
            // given.
            if (mpath[0] == '/')
              enable_task_finder (s);
            break;
          }

        case 'e':
	  if (have_script)
	    {
	      cerr << "Only one script can be given on the command line."
		   << endl;
              exit (1);
	    }
          cmdline_script = string (optarg);
          have_script = true;
          break;

        case 'o':
          // NB: client_options not a problem, since pass 1-4 does not use output_file.
          s.output_file = string (optarg);
          break;

        case 'R':
          if (client_options) { cerr << "ERROR: -R invalid with --client-options" << endl; exit(1); }
          s.runtime_path = string (optarg);
          break;

        case 'm':
	  if (client_options)
	    client_options_disallowed += client_options_disallowed.empty () ? "-m" : ", -m";
          s.module_name = string (optarg);
	  save_module = true;
          // XXX: convert to assert_regexp_match()
	  {
	    // If the module name ends with '.ko', chop it off since
	    // modutils doesn't like modules named 'foo.ko.ko'.
	    if (endswith(s.module_name, ".ko"))
	      {
		s.module_name.erase(s.module_name.size() - 3);
		cerr << "Truncating module name to '" << s.module_name
		     << "'" << endl;
	      }

	    // Make sure an empty module name wasn't specified (-m "")
	    if (s.module_name.empty())
	    {
		cerr << "Module name cannot be empty." << endl;
		exit(1);
	    }

	    // Make sure the module name is only composed of the
	    // following chars: [_a-zA-Z0-9]
	    const string identchars("_" "abcdefghijklmnopqrstuvwxyz"
				    "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "0123456789");
	    if (s.module_name.find_first_not_of(identchars) != string::npos)
	      {
		cerr << "Invalid module name (must only be composed of"
		    " characters [_a-zA-Z0-9])." << endl;
		exit(1);
	      }

	    // Make sure module name isn't too long.
	    if (s.module_name.size() >= (MODULE_NAME_LEN - 1))
	      {
		s.module_name.resize(MODULE_NAME_LEN - 1);
		cerr << "Truncating module name to '" << s.module_name
		     << "'" << endl;
	      }
	  }

	  s.use_script_cache = false;
          break;

        case 'r':
          if (client_options) // NB: no paths!
            assert_regexp_match("-r parameter from client", optarg, "^[a-z0-9_.-]+$");
          setup_kernel_release(s, optarg);
          break;

        case 'a':
          assert_regexp_match("-a parameter", optarg, "^[a-z0-9_-]+$");
          s.architecture = string(optarg);
          break;

        case 'k':
          s.keep_tmpdir = true;
          s.use_script_cache = false; /* User wants to keep a usable build tree. */
          break;

        case 'g':
          s.guru_mode = true;
          break;

        case 'P':
          s.prologue_searching = true;
          break;

        case 'b':
          s.bulk_mode = true;
          break;

	case 'u':
	  s.unoptimized = true;
	  break;

        case 's':
          s.buffer_size = (int) strtoul (optarg, &num_endptr, 10);
          if (*num_endptr != '\0' || s.buffer_size < 1 || s.buffer_size > 4095)
            {
              cerr << "Invalid buffer size (should be 1-4095)." << endl;
	      exit(1);
            }
          break;

	case 'c':
	  s.cmd = string (optarg);
	  break;

	case 'x':
	  s.target_pid = (int) strtoul(optarg, &num_endptr, 10);
	  if (*num_endptr != '\0')
	    {
	      cerr << "Invalid target process ID number." << endl;
	      exit (1);
	    }
	  break;

	case 'D':
          assert_regexp_match ("-D parameter", optarg, "^[a-z_][a-z_0-9]*(=-?[a-z_0-9]+)?$");
	  if (client_options)
	    client_options_disallowed += client_options_disallowed.empty () ? "-D" : ", -D";
	  s.macros.push_back (string (optarg));
	  break;

	case 'S':
          assert_regexp_match ("-S parameter", optarg, "^[0-9]+(,[0-9]+)?$");
	  s.size_option = string (optarg);
	  break;

	case 'q':
          if (client_options) { cerr << "ERROR: -q invalid with --client-options" << endl; exit(1); } 
	  s.tapset_compile_coverage = true;
	  break;

        case 'h':
          usage (s, 0);
          break;

        case 'L':
          s.listing_mode_vars = true;
          s.unoptimized = true; // This causes retention of variables for listing_mode

        case 'l':
	  s.suppress_warnings = true;
          s.listing_mode = true;
          s.last_pass = 2;
          if (have_script)
            {
	      cerr << "Only one script can be given on the command line."
		   << endl;
	      exit (1);
            }
          cmdline_script = string("probe ") + string(optarg) + " {}";
          have_script = true;
          break;

        case 'F':
          s.load_only = true;
	  break;

	case 'B':
          if (client_options) { cerr << "ERROR: -B invalid with --client-options" << endl; exit(1); } 
          s.kbuildflags.push_back (string (optarg));
	  break;

        case 0:
          switch (long_opt)
            {
            case LONG_OPT_KELF:
	      s.consult_symtab = true;
	      break;
            case LONG_OPT_KMAP:
	      // Leave s.consult_symtab unset for now, to ease error checking.
              if (!s.kernel_symtab_path.empty())
		{
		  cerr << "You can't specify multiple --kmap options." << endl;
		  exit(1);
		}
              if (optarg)
                s.kernel_symtab_path = optarg;
              else
                s.kernel_symtab_path = PATH_TBD;
	      break;
	    case LONG_OPT_IGNORE_VMLINUX:
	      s.ignore_vmlinux = true;
	      break;
	    case LONG_OPT_IGNORE_DWARF:
	      s.ignore_dwarf = true;
	      break;
	    case LONG_OPT_VERBOSE_PASS:
              {
                bool ok = true;
                if (strlen(optarg) < 1 || strlen(optarg) > 5)
                  ok = false;
                if (ok)
                  for (unsigned i=0; i<strlen(optarg); i++)
                    if (isdigit (optarg[i]))
                      s.perpass_verbose[i] += optarg[i]-'0';
                    else
                      ok = false;
                
                if (! ok)
                  {
                    cerr << "Invalid --vp argument: it takes 1 to 5 digits." << endl;
                    exit (1);
                  }
                // NB: we don't do this: s.last_pass = strlen(optarg);
                break;
              }
	    case LONG_OPT_SKIP_BADVARS:
	      s.skip_badvars = true;
	      break;
	    case LONG_OPT_UNPRIVILEGED:
	      s.unprivileged = true;
              /* NB: for server security, it is essential that once this flag is
                 set, no future flag be able to unset it. */
	      break;
	    case LONG_OPT_OMIT_WERROR:
	      s.omit_werror = true;
	      break;
	    case LONG_OPT_CLIENT_OPTIONS:
	      client_options = true;
	      break;
	    case LONG_OPT_HELP:
	      usage (s, 0);
	      break;

            // The caching options should not be available to server clients
            case LONG_OPT_DISABLE_CACHE:
              if (client_options) {
                  cerr << "ERROR: --disable-cache is invalid with --client-options" << endl;
                  exit(1);
              }
              s.use_cache = s.use_script_cache = false;
              break;
            case LONG_OPT_POISON_CACHE:
              if (client_options) {
                  cerr << "ERROR: --poison-cache is invalid with --client-options" << endl;
                  exit(1);
              }
              s.poison_cache = true;
              break;
            case LONG_OPT_CLEAN_CACHE:
              if (client_options) {
                  cerr << "ERROR: --clean-cache is invalid with --client-options" << endl;
                  exit(1);
              }
              clean_cache(s);
              exit(0);

            case LONG_OPT_COMPATIBLE:
              s.compatible = optarg;
              break;

            default:
              // NOTREACHED unless one added a getopt option but not a corresponding switch/case:
              cerr << "Unhandled long argument id " << long_opt << endl;
              exit(1);
            }
          break;

        default:
          // NOTREACHED unless one added a getopt option but not a corresponding switch/case:
          cerr << "Unhandled argument code " << (char)grc << endl;
          exit(1);
          break;
        }
    }

  // Check for options conflicts.

  if (client_options && s.last_pass > 4)
    {
      s.last_pass = 4; /* Quietly downgrade.  Server passed through -p5 naively. */
    }
  if (client_options && s.unprivileged && ! client_options_disallowed.empty ())
    {
      cerr << "You can't specify " << client_options_disallowed << " when --unprivileged is specified." << endl;
      usage (s, 1);
    }
  if ((s.cmd != "") && (s.target_pid))
    {
      cerr << "You can't specify -c and -x options together." << endl;
      usage (s, 1);
    }
  if (s.unprivileged && s.guru_mode)
    {
      cerr << "You can't specify -g and --unprivileged together." << endl;
      usage (s, 1);
    }
  if (!s.kernel_symtab_path.empty())
    {
      if (s.consult_symtab)
      {
        cerr << "You can't specify --kelf and --kmap together." << endl;
        usage (s, 1);
      }
      s.consult_symtab = true;
      if (s.kernel_symtab_path == PATH_TBD)
        s.kernel_symtab_path = string("/boot/System.map-") + s.kernel_release;
    }
  // Warn in case the target kernel release doesn't match the running one.
  if (s.last_pass > 4 &&
      (string(buf.release) != s.kernel_release ||
       machine != s.architecture)) // NB: squashed ARCH by PR4186 logic
   {
     if(! s.suppress_warnings)
       cerr << "WARNING: kernel release/architecture mismatch with host forces last-pass 4." << endl;
     s.last_pass = 4;
   }

  for (int i = optind; i < argc; i++)
    {
      if (! have_script)
        {
          script_file = string (argv[i]);
          have_script = true;
        }
      else
        s.args.push_back (string (argv[i]));
    }

  // need a user file
  // NB: this is also triggered if stap is invoked with no arguments at all
  if (! have_script)
    {
      cerr << "A script must be specified." << endl;
      usage(s, 1);
    }

  // translate path of runtime to absolute path
  if (s.runtime_path[0] != '/')
    {
      char cwd[PATH_MAX];
      if (getcwd(cwd, sizeof(cwd)))
        {
          s.runtime_path = string(cwd) + "/" + s.runtime_path;
        }
    }

  int rc = 0;
  
  // PASS 0: setting up
  s.verbose = s.perpass_verbose[0];
  STAP_PROBE1(stap, pass0__start, &s);


  // For PR1477, we used to override $PATH and $LC_ALL and other stuff
  // here.  We seem to use complete pathnames in
  // buildrun.cxx/tapsets.cxx now, so this is not necessary.  Further,
  // it interferes with util.cxx:find_executable(), used for $PATH
  // resolution.

  s.kernel_base_release.assign(s.kernel_release, 0, s.kernel_release.find('-'));

  // arguments parsed; get down to business
  if (s.verbose > 1)
    {
      version ();
      clog << "Session arch: " << s.architecture
           << " release: " << s.kernel_release
           << endl;
    }

  // Create a temporary directory to build within.
  // Be careful with this, as "s.tmpdir" is "rm -rf"'d at the end.
  {
    const char* tmpdir_env = getenv("TMPDIR");
    if (! tmpdir_env)
      tmpdir_env = "/tmp";

    string stapdir = "/stapXXXXXX";
    string tmpdirt = tmpdir_env + stapdir;
    mode_t mask = umask(0);
    const char* tmpdir = mkdtemp((char *)tmpdirt.c_str());
    umask(mask);
    if (! tmpdir)
      {
        const char* e = strerror (errno);
        cerr << "ERROR: cannot create temporary directory (\"" << tmpdirt << "\"): " << e << endl;
        exit (1); // die
      }
    else
      s.tmpdir = tmpdir;

    if (s.verbose>1)
      clog << "Created temporary directory \"" << s.tmpdir << "\"" << endl;
  }

  // Now that no further changes to s.kernel_build_tree can occur, let's use it.
  if (parse_kernel_config (s) != 0)
    exit (1);

  if (parse_kernel_exports (s) != 0)
    exit (1);


  // Create the name of the C source file within the temporary
  // directory.
  s.translated_source = string(s.tmpdir) + "/" + s.module_name + ".c";

  // Set up our handler to catch routine signals, to allow clean
  // and reasonably timely exit.
  setup_signals(&handle_interrupt);

  STAP_PROBE1(stap, pass0__end, &s);

  struct tms tms_before;
  times (& tms_before);
  struct timeval tv_before;
  gettimeofday (&tv_before, NULL);

  // PASS 1a: PARSING USER SCRIPT
  STAP_PROBE1(stap, pass1a__start, &s);

  struct stat user_file_stat;
  int user_file_stat_rc = -1;

  if (script_file == "-")
    {
      s.user_file = parser::parse (s, cin, s.guru_mode);
      user_file_stat_rc = fstat (STDIN_FILENO, & user_file_stat);
    }
  else if (script_file != "")
    {
      s.user_file = parser::parse (s, script_file, s.guru_mode);
      user_file_stat_rc = stat (script_file.c_str(), & user_file_stat);
    }
  else
    {
      istringstream ii (cmdline_script);
      s.user_file = parser::parse (s, ii, s.guru_mode);
    }
  if (s.user_file == 0)
    // syntax errors already printed
    rc ++;

  // Construct arch / kernel-versioning search path
  vector<string> version_suffixes;
  string kvr = s.kernel_release;
  const string& arch = s.architecture;
  // add full kernel-version-release (2.6.NN-FOOBAR) + arch
  version_suffixes.push_back ("/" + kvr + "/" + arch);
  version_suffixes.push_back ("/" + kvr);
  // add kernel version (2.6.NN) + arch
  if (kvr != s.kernel_base_release) {
    kvr = s.kernel_base_release;
    version_suffixes.push_back ("/" + kvr + "/" + arch);
    version_suffixes.push_back ("/" + kvr);
  }
  // add kernel family (2.6) + arch
  string::size_type dot1_index = kvr.find ('.');
  string::size_type dot2_index = kvr.rfind ('.');
  while (dot2_index > dot1_index && dot2_index != string::npos) {
    kvr.erase(dot2_index);
    version_suffixes.push_back ("/" + kvr + "/" + arch);
    version_suffixes.push_back ("/" + kvr);
    dot2_index = kvr.rfind ('.');
  }
  // add architecture search path
  version_suffixes.push_back("/" + arch);
  // add empty string as last element
  version_suffixes.push_back ("");

  // PASS 1b: PARSING LIBRARY SCRIPTS
  STAP_PROBE1(stap, pass1b__start, &s);

  for (unsigned i=0; i<s.include_path.size(); i++)
    {
      // now iterate upon it
      for (unsigned k=0; k<version_suffixes.size(); k++)
        {
          glob_t globbuf;
          string dir = s.include_path[i] + version_suffixes[k] + "/*.stp";
          int r = glob(dir.c_str (), 0, NULL, & globbuf);
          if (r == GLOB_NOSPACE || r == GLOB_ABORTED)
            rc ++;
          // GLOB_NOMATCH is acceptable

          if (s.verbose>1 && globbuf.gl_pathc > 0)
            clog << "Searched \"" << dir << "\", "
                 << "found " << globbuf.gl_pathc << endl;

          for (unsigned j=0; j<globbuf.gl_pathc; j++)
            {
              if (pending_interrupts)
                break;

              // XXX: privilege only for /usr/share/systemtap?
              stapfile* f = parser::parse (s, globbuf.gl_pathv[j], true);
              if (f == 0)
                s.print_warning("tapset '" + string(globbuf.gl_pathv[j])
                                + "' has errors, and will be skipped.");
              else
                s.library_files.push_back (f);

              struct stat tapset_file_stat;
              int stat_rc = stat (globbuf.gl_pathv[j], & tapset_file_stat);
              if (stat_rc == 0 && user_file_stat_rc == 0 &&
                  user_file_stat.st_dev == tapset_file_stat.st_dev &&
                  user_file_stat.st_ino == tapset_file_stat.st_ino)
                {
                  clog << "usage error: tapset file '" << globbuf.gl_pathv[j]
                       << "' cannot be run directly as a session script." << endl;
                  rc ++;
                }

            }

          globfree (& globbuf);
        }
    }
  if (s.num_errors())
    rc ++;

  if (rc == 0 && s.last_pass == 1)
    {
      cout << "# parse tree dump" << endl;
      s.user_file->print (cout);
      cout << endl;
      if (s.verbose)
        for (unsigned i=0; i<s.library_files.size(); i++)
          {
            s.library_files[i]->print (cout);
            cout << endl;
          }
    }

  struct tms tms_after;
  times (& tms_after);
  unsigned _sc_clk_tck = sysconf (_SC_CLK_TCK);
  struct timeval tv_after;
  gettimeofday (&tv_after, NULL);

#define TIMESPRINT "in " << \
           (tms_after.tms_cutime + tms_after.tms_utime \
            - tms_before.tms_cutime - tms_before.tms_utime) * 1000 / (_sc_clk_tck) << "usr/" \
        << (tms_after.tms_cstime + tms_after.tms_stime \
            - tms_before.tms_cstime - tms_before.tms_stime) * 1000 / (_sc_clk_tck) << "sys/" \
        << ((tv_after.tv_sec - tv_before.tv_sec) * 1000 + \
            ((long)tv_after.tv_usec - (long)tv_before.tv_usec) / 1000) << "real ms."

  // syntax errors, if any, are already printed
  if (s.verbose)
    {
      clog << "Pass 1: parsed user script and "
           << s.library_files.size()
           << " library script(s) "
           << getmemusage()
           << TIMESPRINT
           << endl;
    }

  if (rc && !s.listing_mode)
    cerr << "Pass 1: parse failed.  "
         << "Try again with another '--vp 1' option."
         << endl;

  STAP_PROBE1(stap, pass1__end, &s);

  if (rc || s.last_pass == 1 || pending_interrupts) goto cleanup;

  times (& tms_before);
  gettimeofday (&tv_before, NULL);

  // PASS 2: ELABORATION
  s.verbose = s.perpass_verbose[1];
  STAP_PROBE1(stap, pass2__start, &s);
  rc = semantic_pass (s);

  if (s.listing_mode || (rc == 0 && s.last_pass == 2))
    printscript(s, cout);

  times (& tms_after);
  gettimeofday (&tv_after, NULL);

  if (s.verbose) clog << "Pass 2: analyzed script: "
                      << s.probes.size() << " probe(s), "
                      << s.functions.size() << " function(s), "
                      << s.embeds.size() << " embed(s), "
                      << s.globals.size() << " global(s) "
                      << getmemusage()
                      << TIMESPRINT
                      << endl;

  if (rc && !s.listing_mode)
    cerr << "Pass 2: analysis failed.  "
         << "Try again with another '--vp 01' option."
         << endl;

  /* Print out list of missing files.  XXX should be "if (rc)" ? */
  missing_rpm_list_print(s);

  STAP_PROBE1(stap, pass2__end, &s);

  if (rc || s.listing_mode || s.last_pass == 2 || pending_interrupts) goto cleanup;

  // Generate hash.  There isn't any point in generating the hash
  // if last_pass is 2, since we'll quit before using it.
  if (s.use_script_cache)
    {
      ostringstream o;
      unsigned saved_verbose;

      {
        // Make sure we're in verbose mode, so that printscript()
        // will output function/probe bodies.
        saved_verbose = s.verbose;
        s.verbose = 3;
        printscript(s, o);  // Print script to 'o'
        s.verbose = saved_verbose;
      }

      // Generate hash
      find_script_hash (s, o.str());

      // See if we can use cached source/module.
      if (get_script_from_cache(s))
        {
	  // If our last pass isn't 5, we're done (since passes 3 and
	  // 4 just generate what we just pulled out of the cache).
	  if (s.last_pass < 5 || pending_interrupts) goto cleanup;

	  // Short-circuit to pass 5.
	  goto pass_5;
	}
    }

  // PASS 3: TRANSLATION
  s.verbose = s.perpass_verbose[2];
  times (& tms_before);
  gettimeofday (&tv_before, NULL);
  STAP_PROBE1(stap, pass3__start, &s);

  rc = translate_pass (s);

  if (rc == 0 && s.last_pass == 3)
    {
      ifstream i (s.translated_source.c_str());
      cout << i.rdbuf();
    }

  times (& tms_after);
  gettimeofday (&tv_after, NULL);

  if (s.verbose) clog << "Pass 3: translated to C into \""
                      << s.translated_source
                      << "\" "
                      << getmemusage()
                      << TIMESPRINT
                      << endl;

  if (rc)
    cerr << "Pass 3: translation failed.  "
         << "Try again with another '--vp 001' option."
         << endl;

  STAP_PROBE1(stap, pass3__end, &s);

  if (rc || s.last_pass == 3 || pending_interrupts) goto cleanup;

  // PASS 4: COMPILATION
  s.verbose = s.perpass_verbose[3];
  times (& tms_before);
  gettimeofday (&tv_before, NULL);
  STAP_PROBE1(stap, pass4__start, &s);

  if (s.use_cache)
    {
      find_stapconf_hash(s);
      get_stapconf_from_cache(s);
    }
  rc = compile_pass (s);

  if (rc == 0 && s.last_pass == 4)
    {
      cout << ((s.hash_path == "") ? (s.module_name + string(".ko")) : s.hash_path);
      cout << endl;
    }

  times (& tms_after);
  gettimeofday (&tv_after, NULL);

  if (s.verbose) clog << "Pass 4: compiled C into \""
                      << s.module_name << ".ko"
                      << "\" "
                      << TIMESPRINT
                      << endl;

  if (rc)
    cerr << "Pass 4: compilation failed.  "
         << "Try again with another '--vp 0001' option."
         << endl;
  else
    {
      // Update cache. Cache cleaning is kicked off at the beginning of this function.
      if (s.use_script_cache)
        add_script_to_cache(s);
      if (s.use_cache)
        add_stapconf_to_cache(s);

      // We may need to save the module in $CWD if the cache was
      // inaccessible for some reason.
      if (! s.use_script_cache && s.last_pass == 4)
        save_module = true;

      // Copy module to the current directory.
      if (save_module && !pending_interrupts)
        {
	  string module_src_path = s.tmpdir + "/" + s.module_name + ".ko";
	  string module_dest_path = s.module_name + ".ko";
	  copy_file(module_src_path, module_dest_path, s.verbose > 1);
	}
    }

  STAP_PROBE1(stap, pass4__end, &s);

  if (rc || s.last_pass == 4 || pending_interrupts) goto cleanup;


  // PASS 5: RUN
pass_5:
  s.verbose = s.perpass_verbose[4];
  times (& tms_before);
  gettimeofday (&tv_before, NULL);
  // NB: this message is a judgement call.  The other passes don't emit
  // a "hello, I'm starting" message, but then the others aren't interactive
  // and don't take an indefinite amount of time.
  STAP_PROBE1(stap, pass5__start, &s);
  if (s.verbose) clog << "Pass 5: starting run." << endl;
  rc = run_pass (s);
  times (& tms_after);
  gettimeofday (&tv_after, NULL);
  if (s.verbose) clog << "Pass 5: run completed "
                      << TIMESPRINT
                      << endl;

  if (rc)
    cerr << "Pass 5: run failed.  "
         << "Try again with another '--vp 00001' option."
         << endl;

  // if (rc) goto cleanup;

  STAP_PROBE1(stap, pass5__end, &s);

  // PASS 6: cleaning up
 cleanup:

  STAP_PROBE1(stap, pass6__start, &s);

  // update the database information
  if (!rc && s.tapset_compile_coverage && !pending_interrupts) {
#ifdef HAVE_LIBSQLITE3
    update_coverage_db(s);
#else
    cerr << "Coverage database not available without libsqlite3" << endl;
#endif
  }

  // Clean up temporary directory.  Obviously, be careful with this.
  if (s.tmpdir == "")
    ; // do nothing
  else
    {
      if (s.keep_tmpdir)
        // NB: the format of this message needs to match the expectations
        // of stap-server-connect.c.
        clog << "Keeping temporary directory \"" << s.tmpdir << "\"" << endl;
      else
        {
	  // Ignore signals while we're deleting the temporary directory.
	  setup_signals (SIG_IGN);

	  // Remove the temporary directory.
          string cleanupcmd = "rm -rf ";
          cleanupcmd += s.tmpdir;

	  (void) stap_system (s.verbose, cleanupcmd);
        }
    }

  STAP_PROBE1(stap, pass6__end, &s);

  return (rc||pending_interrupts) ? EXIT_FAILURE : EXIT_SUCCESS;
}


/*
Perngrq sebz fzvyrlgnc.fit, rkcbegrq gb n 1484k1110 fzvyrlgnc.cat,
gurapr  catgbcnz | cazfpnyr -jvqgu 160 | 
cczqvgure -qvz 4 -erq 2 -terra 2 -oyhr 2  | cczgbnafv -2k4 | bq -i -j19 -g k1 | 
phg -s2- -q' ' | frq -r 'f,^,\\k,' -r 'f, ,\\k,t' -r 'f,^,",'  -r 'f,$,",'
*/
const char* morehelp =
"\x1b\x5b\x30\x6d\x1b\x5b\x33\x37\x6d\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x60\x20\x20\x2e\x60\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x0a\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
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"\x20\x20\x20\x20\x0a\x20\x20\x20\x20\x20\x20\x3b\x3c\x2e\x2e\x2c\x2e\x2e\x20"
"\x3a\x3c\x3b\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x60\x3a\x3a\x3a"
"\x60\x20\x20\x20\x20\x20\x60\x3a\x1b\x5b\x33\x33\x6d\x3c\x3b\x1b\x5b\x33\x31"
"\x6d\x3c\x3b\x3c\x1b\x5b\x33\x33\x6d\x3b\x1b\x5b\x33\x31\x6d\x3c\x1b\x5b\x33"
"\x33\x6d\x3b\x1b\x5b\x33\x31\x6d\x3c\x3c\x1b\x5b\x33\x30\x6d\x53\x24\x53\x1b"
"\x5b\x33\x31\x6d\x53\x1b\x5b\x33\x37\x6d\x27\x1b\x5b\x33\x33\x6d\x2e\x3a\x3b"
"\x1b\x5b\x33\x31\x6d\x3c\x3b\x3c\x1b\x5b\x33\x33\x6d\x3a\x1b\x5b\x33\x31\x6d"
"\x3c\x1b\x5b\x33\x33\x6d\x3a\x1b\x5b\x33\x37\x6d\x60\x20\x20\x20\x60\x2e\x3a"
"\x3a\x20\x20\x20\x20\x20\x20\x20\x0a\x20\x20\x2e\x3a\x3a\x3c\x53\x3c\x3a\x60"
"\x3a\x3a\x3a\x3a\x53\x1b\x5b\x33\x32\x6d\x53\x1b\x5b\x33\x37\x6d\x3b\x27\x3a"
"\x3c\x2c\x2e\x20\x20\x20\x20\x20\x20\x20\x20\x20\x60\x3a\x3a\x3a\x3a\x2e\x60"
"\x2e\x60\x2e\x60\x3a\x1b\x5b\x33\x33\x6d\x3c\x3a\x1b\x5b\x33\x31\x6d\x3c\x1b"
"\x5b\x33\x33\x6d\x53\x1b\x5b\x33\x31\x6d\x3c\x1b\x5b\x33\x33\x6d\x3b\x1b\x5b"
"\x33\x31\x6d\x3c\x2c\x1b\x5b\x33\x33\x6d\x3c\x3b\x3a\x1b\x5b\x33\x31\x6d\x2c"
"\x1b\x5b\x33\x33\x6d\x3c\x3b\x1b\x5b\x33\x31\x6d\x3c\x1b\x5b\x33\x33\x6d\x53"
"\x1b\x5b\x33\x31\x6d\x3c\x1b\x5b\x33\x33\x6d\x3b\x3c\x1b\x5b\x33\x37\x6d\x3a"
"\x60\x2e\x60\x2e\x3b\x1b\x5b\x33\x34\x6d\x53\x1b\x5b\x33\x37\x6d\x53\x3f\x27"
"\x20\x20\x20\x20\x20\x20\x20\x20\x0a\x2e\x60\x3a\x60\x3a\x3c\x53\x53\x3b\x3c"
"\x3a\x60\x3a\x3a\x53\x53\x53\x3c\x3a\x60\x3a\x1b\x5b\x33\x30\x6d\x53\x1b\x5b"
"\x33\x37\x6d\x2b\x20\x20\x20\x20\x20\x20\x60\x20\x20\x20\x3a\x1b\x5b\x33\x34"
"\x6d\x53\x1b\x5b\x33\x30\x6d\x53\x46\x24\x1b\x5b\x33\x37\x6d\x2c\x60\x3a\x3a"
"\x3a\x3c\x3a\x3c\x1b\x5b\x33\x33\x6d\x53\x1b\x5b\x33\x37\x6d\x3c\x1b\x5b\x33"
"\x33\x6d\x53\x1b\x5b\x33\x31\x6d\x53\x1b\x5b\x33\x33\x6d\x3b\x1b\x5b\x33\x31"
"\x6d\x53\x3b\x53\x1b\x5b\x33\x33\x6d\x3b\x1b\x5b\x33\x31\x6d\x53\x1b\x5b\x33"
"\x33\x6d\x53\x1b\x5b\x33\x37\x6d\x3c\x1b\x5b\x33\x33\x6d\x53\x1b\x5b\x33\x37"
"\x6d\x3c\x53\x3c\x3a\x3a\x3a\x3a\x3f\x1b\x5b\x33\x30\x6d\x53\x24\x48\x1b\x5b"
"\x33\x37\x6d\x27\x60\x20\x60\x20\x20\x20\x20\x20\x20\x0a\x2e\x60\x3a\x60\x2e"
"\x60\x3a\x60\x2e\x60\x3a\x60\x2e\x60\x3a\x60\x2e\x60\x3a\x60\x2e\x1b\x5b\x33"
"\x30\x6d\x53\x46\x1b\x5b\x33\x37\x6d\x20\x20\x20\x20\x60\x20\x20\x20\x60\x20"
"\x60\x3a\x1b\x5b\x33\x30\x6d\x3c\x46\x46\x46\x1b\x5b\x33\x37\x6d\x3f\x2e\x60"
"\x3a\x60\x3a\x60\x3a\x60\x3a\x60\x3a\x3c\x3a\x60\x3a\x27\x3a\x60\x3a\x60\x3a"
"\x60\x3a\x60\x3b\x1b\x5b\x33\x30\x6d\x53\x46\x48\x46\x1b\x5b\x33\x37\x6d\x27"
"\x20\x60\x20\x60\x20\x60\x20\x20\x20\x20\x0a\x20\x3c\x3b\x3a\x2e\x60\x20\x60"
"\x2e\x60\x20\x60\x2e\x60\x20\x60\x2e\x60\x2c\x53\x1b\x5b\x33\x32\x6d\x53\x1b"
"\x5b\x33\x30\x6d\x53\x1b\x5b\x33\x37\x6d\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x60\x20\x60\x3c\x1b\x5b\x33\x30\x6d\x46\x46\x46\x1b\x5b\x33\x34\x6d"
"\x2b\x1b\x5b\x33\x37\x6d\x3a\x20\x60\x20\x60\x20\x60\x2e\x60\x20\x60\x2e\x60"
"\x20\x60\x2e\x60\x20\x60\x20\x60\x2c\x1b\x5b\x33\x30\x6d\x24\x46\x48\x46\x1b"
"\x5b\x33\x37\x6d\x27\x20\x60\x20\x20\x20\x60\x20\x20\x20\x20\x20\x20\x0a\x20"
"\x60\x3a\x1b\x5b\x33\x30\x6d\x53\x24\x1b\x5b\x33\x37\x6d\x53\x53\x53\x3b\x3c"
"\x2c\x60\x2c\x3b\x3b\x53\x3f\x53\x1b\x5b\x33\x30\x6d\x24\x46\x3c\x1b\x5b\x33"
"\x37\x6d\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x60\x20\x60"
"\x3c\x1b\x5b\x33\x30\x6d\x48\x46\x46\x46\x1b\x5b\x33\x37\x6d\x3f\x2e\x60\x20"
"\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x3b\x76\x1b\x5b\x33\x30\x6d"
"\x48\x46\x48\x46\x1b\x5b\x33\x37\x6d\x27\x20\x60\x20\x20\x20\x60\x20\x20\x20"
"\x20\x20\x20\x20\x20\x0a\x20\x20\x20\x60\x3c\x1b\x5b\x33\x30\x6d\x46\x24\x1b"
"\x5b\x33\x37\x6d\x53\x53\x53\x53\x53\x53\x1b\x5b\x33\x30\x6d\x53\x24\x53\x46"
"\x46\x46\x1b\x5b\x33\x37\x6d\x27\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x60\x3c\x1b\x5b\x33\x30\x6d\x23\x46\x46\x46"
"\x24\x1b\x5b\x33\x37\x6d\x76\x2c\x2c\x20\x2e\x20\x2e\x20\x2c\x2c\x76\x1b\x5b"
"\x33\x30\x6d\x26\x24\x46\x46\x48\x3c\x1b\x5b\x33\x37\x6d\x27\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x0a\x20\x20\x20\x20\x20\x60"
"\x3c\x1b\x5b\x33\x30\x6d\x53\x46\x46\x24\x46\x24\x46\x46\x48\x46\x53\x1b\x5b"
"\x33\x37\x6d\x20\x20\x20\x20\x20\x20\x20\x20\x2e\x60\x20\x60\x2e\x60\x2e\x60"
"\x2e\x60\x2e\x60\x3a\x3a\x3a\x3a\x3a\x1b\x5b\x33\x30\x6d\x2a\x46\x46\x46\x48"
"\x46\x48\x46\x48\x46\x46\x46\x48\x46\x48\x46\x48\x1b\x5b\x33\x37\x6d\x3c\x22"
"\x2e\x60\x2e\x60\x2e\x60\x2e\x60\x2e\x60\x20\x20\x20\x20\x20\x20\x20\x20\x0a"
"\x20\x20\x20\x20\x20\x20\x20\x60\x3a\x1b\x5b\x33\x30\x6d\x48\x46\x46\x46\x48"
"\x46\x46\x46\x1b\x5b\x33\x37\x6d\x27\x20\x20\x20\x60\x20\x60\x2e\x60\x20\x60"
"\x2e\x60\x2e\x60\x3a\x60\x3a\x60\x3a\x60\x3a\x60\x3a\x3a\x3a\x60\x3a\x3c\x3c"
"\x1b\x5b\x33\x30\x6d\x3c\x46\x48\x46\x46\x46\x48\x46\x46\x46\x1b\x5b\x33\x37"
"\x6d\x27\x3a\x60\x3a\x60\x3a\x60\x3a\x60\x2e\x60\x2e\x60\x20\x60\x2e\x60\x20"
"\x60\x20\x60\x20\x20\x0a\x20\x20\x20\x20\x20\x20\x20\x20\x20\x60\x22\x1b\x5b"
"\x33\x30\x6d\x2a\x46\x48\x46\x1b\x5b\x33\x37\x6d\x3f\x20\x20\x20\x60\x20\x60"
"\x2e\x60\x20\x60\x2e\x60\x2e\x60\x3a\x60\x2e\x60\x3a\x60\x3a\x60\x3a\x60\x3a"
"\x60\x3a\x60\x3a\x60\x3a\x60\x3a\x1b\x5b\x33\x30\x6d\x46\x46\x48\x46\x48\x46"
"\x1b\x5b\x33\x37\x6d\x27\x3a\x60\x3a\x60\x3a\x60\x3a\x60\x2e\x60\x3a\x60\x2e"
"\x60\x2e\x60\x20\x60\x2e\x60\x20\x60\x20\x60\x0a\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x60\x3c\x1b\x5b\x33\x30\x6d\x48\x46\x46\x1b\x5b\x33\x37\x6d"
"\x2b\x60\x20\x20\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x2e\x60\x20"
"\x60\x2e\x60\x20\x60\x2e\x60\x20\x60\x3a\x60\x2e\x60\x3b\x1b\x5b\x33\x30\x6d"
"\x48\x46\x46\x46\x1b\x5b\x33\x37\x6d\x27\x2e\x60\x2e\x60\x20\x60\x2e\x60\x20"
"\x60\x2e\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x20\x20\x60\x20\x20\x0a\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x22\x1b\x5b\x33\x30\x6d\x3c"
"\x48\x46\x53\x1b\x5b\x33\x37\x6d\x2b\x3a\x20\x20\x20\x60\x20\x60\x20\x60\x20"
"\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x2c\x1b"
"\x5b\x33\x30\x6d\x24\x46\x48\x46\x1b\x5b\x33\x37\x6d\x3f\x20\x60\x20\x60\x20"
"\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x60\x20\x20\x20\x60"
"\x20\x20\x20\x20\x0a\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x60\x22\x3c\x1b\x5b\x33\x30\x6d\x48\x24\x46\x46\x1b\x5b\x33\x37\x6d\x3e\x2c"
"\x2e\x2e\x20\x20\x20\x20\x20\x20\x20\x20\x60\x20\x20\x20\x60\x20\x20\x20\x3b"
"\x2c\x2c\x1b\x5b\x33\x30\x6d\x24\x53\x46\x46\x46\x1b\x5b\x33\x37\x6d\x27\x22"
"\x20\x20\x60\x20\x20\x20\x60\x20\x20\x20\x60\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x0a\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x60\x22\x1b\x5b\x33\x30\x6d\x2a\x3c\x48"
"\x46\x46\x24\x53\x24\x1b\x5b\x33\x37\x6d\x53\x53\x53\x3e\x3e\x3e\x3e\x3e\x53"
"\x3e\x53\x1b\x5b\x33\x30\x6d\x24\x53\x24\x46\x24\x48\x46\x23\x1b\x5b\x33\x37"
"\x6d\x27\x22\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x0a\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x60\x60\x22\x3c\x1b\x5b\x33\x30\x6d\x2a\x3c\x3c\x3c\x48\x46\x46\x46\x48\x46"
"\x46\x46\x23\x3c\x1b\x5b\x33\x36\x6d\x3c\x1b\x5b\x33\x37\x6d\x3c\x27\x22\x22"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
"\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x0a\x1b"
                                                                "\x5b\x30\x6d";


/* vim: set sw=2 ts=8 cino=>4,n-2,{2,^-2,t0,(0,u0,w1,M1 : */