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Memory sniffing in linux

 
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Old 01-13-2009
PHP Memory sniffing in linux
I am trying to create an application that will be able to sniff memory of other applications.

I am not completely new to systems programming but I am not sure how to go about this task. I understand that accomplishing this mainly require these steps.

1: Get a list of processes
2: Find the process you want to sniff.
3: Get a list of page tables assigned to that process
4: Get R / R/W access to these page tables.
5: Sniff away.

I can do 1&2 just fine, but I have no clue how to accomplish the rest.

I understand that 3 will have to do something with the process control block, and 4 will probably have to do with some system calls with high privileges.

Any advice on doing this would be appreciated, and if there are any books on this subject in particular, that would be great as well.
 
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LEARN ABOUT ULTRIX

ipcmk

IPCMK(1)							   User Commands							  IPCMK(1)

NAME

       ipcmk - make various IPC resources

SYNOPSIS

       ipcmk [options]

DESCRIPTION

       ipcmk allows you to create shared memory segments, message queues, and semaphore arrays.

OPTIONS

       Resources can be specified with these options:

       -M, --shmem size
	      Create  a  shared  memory  segment of size bytes.  The size argument may be followed by the multiplicative suffixes KiB (=1024), MiB
	      (=1024*1024), and so on for GiB, etc. (the "iB" is optional, e.g., "K" has the same meaning as "KiB") or the suffixes KB (=1000), MB
	      (=1000*1000), and so on for GB, etc.

       -Q, --queue
	      Create a message queue.

       -S, --semaphore number
	      Create a semaphore array with number of elements.

       Other options are:

       -p, --mode mode
	      Access permissions for the resource.  Default is 0644.

       -V, --version
	      Display version information and exit.

       -h, --help
	      Display help text and exit.

SEE ALSO

       ipcrm(1), ipcs(1)

AUTHOR

       Hayden A. James <hayden.james@gmail.com>

AVAILABILITY

       The  ipcmk  command  is	part  of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils
       /util-linux/>.

util-linux							     July 2014								  IPCMK(1)