[Xen-devel] Get the pid of a process from hypervisor

[Carlo Maiero <zesster@xxxxxxxxx>]

Hi,

how can i get the pid of a systemcall from do_guest_trap in traps.c?

I tried with this code put in do_guest_trap:

�� uint32_t pid;

�� uint32_t thread_info_address;

�� uint32_t task_struct_addr;

�� int pid_offset=268; // i got this number using the module in xenaccess

��unsigned_long *tmp;

�

//I start getting the address of the thread:

�� thread_info_address= v->arch.guest_context.kernel_sp & 0xFFFFE000;

//then i get the struct of the task

�� tmp=(unsigned long*)(thread_info_addr);

�� get_user(task_struct_addr,tmp);

//finally i get pid:

��tmp =(unsigned long*)(task_struct_addr + pid_offset);

��get_user(pid,tmp);

��printk("pid %d",pid);

What is wrong in the code?

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel