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// build/run probes
// Copyright (C) 2005 Red Hat Inc.
//
// 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 "buildrun.h"
#include <fstream>
#include <sstream>
extern "C" {
#include "signal.h"
}
using namespace std;
int
compile_pass (systemtap_session& s)
{
// fill in a quick Makefile
string makefile_nm = s.tmpdir + "/Makefile";
ofstream o (makefile_nm.c_str());
int rc = 0;
// Create makefile
if (s.test_mode)
{
string module_dir = string("/lib/modules/")
+ s.kernel_release + "/build";
o << "CFLAGS += -I \"" << module_dir << "/include\"" << endl;
o << "CFLAGS += -I \"" << s.runtime_path << "/user\"" << endl;
o << "CFLAGS += -I \"" << s.runtime_path << "\"" << endl;
o << "CFLAGS += -I \"" << module_dir << "/include/asm/mach-default\"" << endl;
o << s.module_name << ": " << s.translated_source << endl;
o << "\t$(CC) $(CFLAGS) -o " << s.module_name
<< " " << s.translated_source << endl;
o.close ();
}
else
{
// Assumes linux 2.6 kbuild
o << "CFLAGS += -Wno-unused -Werror" << endl;
o << "CFLAGS += -I \"" << s.runtime_path << "\"" << endl;
o << "CFLAGS += -I \"" << s.runtime_path << "/relayfs\"" << endl;
o << "obj-m := " << s.module_name << ".o" << endl;
o.close ();
}
// Run make
if (s.test_mode)
{
string make_cmd = string("/usr/bin/make -C \"") + s.tmpdir + "\"";
if (! s.verbose)
make_cmd += " -s >/dev/null 2>&1";
if (s.verbose) clog << "Running " << make_cmd << endl;
rc = system (make_cmd.c_str());
if (s.verbose) clog << "Pass 4: compiled into \""
<< s.module_name
<< "\"" << endl;
}
else
{
string module_dir = string("/lib/modules/")
+ s.kernel_release + "/build";
string make_cmd = string("/usr/bin/make")
+ string (" -C \"") + module_dir + string("\"");
make_cmd += string(" M=\"") + s.tmpdir + string("\" modules");
if (! s.verbose)
make_cmd += " -s >/dev/null 2>&1";
if (s.verbose) clog << "Running " << make_cmd << endl;
rc = system (make_cmd.c_str());
if (s.verbose) clog << "Pass 4: compiled into \""
<< s.module_name << ".ko"
<< "\"" << endl;
}
return rc;
}
template <typename T>
static string
stringify(T t)
{
ostringstream s;
s << t;
return s.str ();
}
int
run_pass (systemtap_session& s)
{
int rc = 0;
if (s.test_mode)
{
string run_cmd = s.tmpdir + "/" + s.module_name;
if (s.verbose) clog << "Running " << run_cmd << endl;
rc = system (run_cmd.c_str ());
}
else // real run
{
// leave parent process alone
sighandler_t oldsig = signal (SIGINT, SIG_IGN);
// for now, just spawn stpd
string stpd_cmd = string("/usr/bin/sudo ")
+ string(PKGLIBDIR) + "/stpd "
+ "-r " // disable relayfs
+ (s.verbose ? "" : "-q ");
if (s.cmd != "")
stpd_cmd += "-c \"" + s.cmd + "\" ";
if (s.target_pid)
stpd_cmd += "-t " + stringify(s.target_pid) + " ";
stpd_cmd += s.tmpdir + "/" + s.module_name + ".ko";
if (s.verbose) clog << "Running " << stpd_cmd << endl;
rc = system (stpd_cmd.c_str ());
signal (SIGINT, oldsig);
}
return rc;
}
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