SYSCALL_GET_ARGUMENT(9) Machine State SYSCALL_GET_ARGUMENT(9)
NAME
syscall_get_arguments - extract system call parameter values
SYNOPSIS
void syscall_get_arguments(struct task_struct * task, struct pt_regs * regs, unsigned int i, unsigned int n, unsigned long * args);
ARGUMENTS
task
task of interest, must be blocked
regs
task_pt_regs of task
i
argument index [0,5]
n
number of arguments; n+i must be [1,6].
args
array filled with argument values
DESCRIPTION
Fetches n arguments to the system call starting with the i'th argument (from 0 through 5). Argument i is stored in args[0], and so on. An
arch inline version is probably optimal when i and n are constants.
It's only valid to call this when task is stopped for tracing on entry to a system call, due to TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT.
It's invalid to call this with i + n > 6; we only support system calls taking up to 6 arguments.
Kernel Hackers Manual 2.6. July 2010 SYSCALL_GET_ARGUMENT(9)
