Section: Linux Programmer's Manual (2)
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sigreturn - return from signal handler and cleanup stack frame
int sigreturn(unsigned long __unused);
When the Linux kernel creates the stack frame for a signal handler, a
is inserted into the stack frame so that upon
return from the signal handler,
will be called.
call undoes everything that was
done---changing the process's signal mask, switching stacks (see
order to invoke the signal handler:
it restores the process's signal mask, switches stacks,
and restores the process's context (registers, processor flags),
so that the process directly resumes execution
at the point where it was interrupted by the signal.
is specific to Linux and should not be used in programs intended to be
call is used by the kernel to implement signal handlers.
be called directly.
Better yet, the specific use of the
argument varies depending on the architecture.
This page is part of release 3.27 of the Linux
A description of the project,
and information about reporting bugs,
can be found at
- RETURN VALUE
- CONFORMING TO
- SEE ALSO
This document was created by
using the manual pages.