OL> + /* were we from a system call? if so, get old error/retval */
OL> + if (syscall_get_nr(current, regs) >= 0)
OL> + ret = syscall_get_error(current, regs);
OL> The test "were we from a system call ?" is implemented differently
OL> on the s390, for example. Compare the code in handle_signal(),
OL> whose logic I follow.
As far as I can tell, handle_signal() doesn't make that determination
on s390. However, do_signal() does:
/* Are we from a system call? */
if (regs->svcnr) {
which is identical to the outcome of your code, based on the
implementation of syscall_get_nr():
static inline long syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
return regs->svcnr ? regs->svcnr : -1;
}
Perhaps I need to further study where your function is used to figure
out what obscure details I'm missing... :)
--
Dan Smith
IBM Linux Technology Center
email: danms@xxxxxxxxxx
_______________________________________________
Containers mailing list
Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linux-foundation.org/mailman/listinfo/containers
