MrLucky

Hi,

The Win32 Api has the functions ReadProcessMemory and WriteProcessMemory, to read/write the memopry of a certain process.

But I'm a Linux user, and after a lot of searching I can't find equivalent functions that work on Linux.

Do they actually exists, and if so, do I need a library or something?

Salem

http://www.linuxmanpages.com/man2/ptrace.2.php

__________________
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.

MrLucky

woot thanks a lot!

Btw, is there any function to ge a list of running processes with their pid's?

CornedBee

No, you have to browse the /proc directory.

Just what are you trying to do?

__________________
All the buzzt!
CornedBee

"There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
- Flon's Law

matsp

If it's a process that you started, then you can also do "jobs" or some such. Or "ps". ("ps ax" will list ALL processes in the system).

But bear in mind that ptrace only works on processes that you own, unless you are root, so you can't poke around in someone elses processes (which is the same in Windows of course).

--
Mats

MrLucky

Ok, I think I'll use the ps command then

Trying to create a memory viewer/editor for Linux.

brewbuck

If he wants to change the memory of another process, he CAN do it with ptrace(). The alternate method is accessing /proc/xxx/mem, but under many kernels, this access is turned off, or restricted to read-only.

pheres

He has just to use the program lcap to enable the CAP_SYS_PTRACE capability. This can be done at run time without changing the kernel