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/*
* Copyright 2002-2019 Intel Corporation.
*
* This software is provided to you as Sample Source Code as defined in the accompanying
* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
* section 1.L.
*
* This software and the related documents are provided as is, with no express or implied
* warranties, other than those that are expressly stated in the License.
*/
/*! @file
* Test pause_tool messages when attaching to Linux process
* The application tests that pause_tool messages appears on INJECTOR stdout
*/
#include <assert.h>
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include <string>
#include <list>
#include <sched.h>
#include <sys/types.h>
#include <unistd.h>
using std::list;
using std::string;
#define DECSTR(buf, num) { buf = (char *)malloc(10); sprintf(buf, "%d", num); }
inline void PrintArguments(char **inArgv)
{
fprintf(stderr, "Going to run: ");
for(unsigned int i=0; inArgv[i] != 0; ++i)
{
fprintf(stderr, "%s ", inArgv[i]);
}
fprintf(stderr, "\n");
}
/* AttachAndInstrument()
* a special routine that runs $PIN
*/
void AttachAndInstrument(list <string > * pinArgs)
{
list <string >::iterator pinArgIt = pinArgs->begin();
string pinBinary = *pinArgIt;
pinArgIt++;
pid_t parent_pid = getpid();
int stdoutDupFd = dup(STDOUT_FILENO); // duplicating stdout to new file descriptor
close(STDOUT_FILENO); // closing stdout
pid_t child = fork();
if (child)
{
// INJECTEE is running with its stdout closed
return;
}
else
{
// inside child
// open stdout using the application original output
dup2(stdoutDupFd, STDOUT_FILENO);
// INJECTOR is running with the original stdout
char **inArgv = new char*[pinArgs->size()+10];
unsigned int idx = 0;
inArgv[idx++] = (char *)pinBinary.c_str();
inArgv[idx++] = (char*)"-pid";
inArgv[idx] = (char *)malloc(10);
sprintf(inArgv[idx++], "%d", parent_pid);
for (; pinArgIt != pinArgs->end(); pinArgIt++)
{
inArgv[idx++]= (char *)pinArgIt->c_str();
}
inArgv[idx] = 0;
PrintArguments(inArgv);
// Activate pin INJECTOR
execvp(inArgv[0], inArgv);
fprintf(stderr, "ERROR: execv %s failed\n", inArgv[0]);
kill(parent_pid, 9);
return;
}
}
/*
* Expected command line: <this exe> [-th_num NUM] -pin $PIN -pinarg <pin args > -t tool <tool args>
*/
void ParseCommandLine(int argc, char *argv[], list < string>* pinArgs)
{
string pinBinary;
for (int i=1; i<argc; i++)
{
string arg = string(argv[i]);
if (arg == "-pin")
{
pinBinary = argv[++i];
}
else if (arg == "-pinarg")
{
for (int parg = ++i; parg < argc; parg++)
{
pinArgs->push_back(string(argv[parg]));
++i;
}
}
}
assert(!pinBinary.empty());
pinArgs->push_front(pinBinary);
}
extern "C" int MainThreadReady(void)
{
return 0;
}
int main(int argc, char *argv[])
{
list <string> pinArgs;
ParseCommandLine(argc, argv, &pinArgs);
AttachAndInstrument(&pinArgs);
// Wait for pin to attach
while (!MainThreadReady())
{
sched_yield();
}
return 0;
}