Question

Is there any way in way in Android or in Android NDK to know which application is reading or writing data on disk or device memory?

Answer 1

I don’t know if there is a SDK way of doing it but Linux will allow you to list processes/open files/sockets and you can try grabbing things from there.

First use ps command to get PID of process, enter:

$ ps -aef | grep {process-name}
$ ps -aef | grep httpd

Next pass this PID to pfiles command,

$ pfiles {PID}
$ pfile 3533

This is how you’d list all open files used by firefox…

lsof -p `ps -C firefox -o pid=`

You can use System.exec() to execute these, but you also need to have root access. Which is something you had to have to view that kind of information anyway I suppose…

EDIT:

this is what i got from Py2Cmod

init.c

/* Generated by py2cmod
*
* py2cmod (c) 2001 Mark Rowe
*/

#include "Python.h"

static PyObject *ErrorObject;

/* ----------------------------------------------------- */

/* List of methods defined in the module */

static struct PyMethodDef iotop/__init___methods[] = {

{NULL,   (PyCFunction)NULL, 0, NULL}        /* sentinel */
};


/* Initialization function for the module (*must* be called initiotop/__init__) */

static char iotop/__init___module_documentation[] =  "";

void initiotop/__init__()
{
PyObject *m, *d;

/* Create the module and add the functions */
m = Py_InitModule4("iotop/__init__", iotop/__init___methods,
    iotop/__init___module_documentation,
    (PyObject*)NULL,PYTHON_API_VERSION);

/* Add some symbolic constants to the module */
d = PyModule_GetDict(m);
ErrorObject = PyString_FromString("iotop/__init__.error");
PyDict_SetItemString(d, "error", ErrorObject);

/* XXXX Add constants here */
PyDict_SetItemString(d, "__file__", PyString_FromString("iotop/__init__.py"));
PyDict_SetItemString(d, "__name__", PyString_FromString("iotop/__init__"));


/* Check for errors */
if (PyErr_Occurred())
    Py_FatalError("can't initialize module iotop/__init__");
}