SYSCALL_GET_RETURN_V(9) Machine State SYSCALL_GET_RETURN_V(9)
NAME
syscall_get_return_value - get the return value of a traced system call
SYNOPSIS
long syscall_get_return_value(struct task_struct * task, struct pt_regs * regs);
ARGUMENTS
task
task of interest, must be blocked
regs
task_pt_regs of task
DESCRIPTION
Returns the return value of the successful system call. This value is meaningless if syscall_get_error returned nonzero.
It's only valid to call this when task is stopped for tracing on exit from a system call, due to TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT.
Kernel Hackers Manual 2.6. July 2010 SYSCALL_GET_RETURN_V(9)
