syscall_get_nr man page on Scientific

syscall_get_nr man page on Scientific

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SYSCALL_GET_NR(9)		 Machine State		     SYSCALL_GET_NR(9)

NAME
       syscall_get_nr - find what system call a task is executing

SYNOPSIS
       int syscall_get_nr(struct task_struct * task, struct pt_regs * regs);

ARGUMENTS
       task
	   task of interest, must be blocked

       regs

	   task_pt_regs of task

DESCRIPTION
       If task is executing a system call or is at system call tracing about
       to attempt one, returns the system call number. If task is not
       executing a system call, i.e. it´s blocked inside the kernel for a
       fault or signal, returns -1.

       Note this returns int even on 64-bit machines. Only 32 bits of system
       call number can be meaningful. If the actual arch value is 64 bits,
       this truncates to 32 bits so 0xffffffff means -1.

       It´s only valid to call this when task is known to be blocked.

Kernel Hackers Manual 2.6.	 November 2013		     SYSCALL_GET_NR(9)

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