Hi, You might want to look at access_process_vm() in mm/memory.c. If you know the pid of the target process, you can use it to search the corresponding task_struct using find_task_by_pid_ns() with init_pid_ns.
Good luck :) Sangman On Wed, Apr 28, 2010 at 7:21 PM, Yang Fangkai <[email protected]>wrote: > Dear List, > > I am developing a virtual device driver such that the user can > write to the driver a process' pid and a virtual address, and the > module will use these two values to get the memory contents of the > target process. I am wondering if there is any easy functions that can > fetch user page's data at this virtual address. Thank you! > > I have tried get_user but this is not possible because the > modules executing get_user at another process's context. I also tried > to use ptrace_readdata, however, it seems that the file at > /kernel/ptrace.c leaves a function access_process_vm undefined and > also I don't know how to compile the source code of my module with > this file (the linker seaches file in /linux/include by default). I am > wondering if there are any other solutions... > > Best, > > Fangkai > > -- > To unsubscribe from this list: send an email with > "unsubscribe kernelnewbies" to [email protected] > Please read the FAQ at http://kernelnewbies.org/FAQ > >
