SIGRETURN (2)
return from signal handler and cleanup stack frame
SYNOPSIS
int sigreturn(unsigned long __unused );
DESCRIPTION
When the Linux kernel creates the stack frame for a signal handler, a
call to
sigreturn
is inserted into the stack frame so that the the signal handler will
call
sigreturn
upon return. This inserted call to
sigreturn
cleans up the stack so that the process can restart from where it was
interrupted by the signal.
RETURN VALUE
WARNING
The
sigreturn
call is used by the kernel to implement signal handlers. It should
never
be called directly. Better yet, the specific use of the
__unused
argument varies depending on the architecture.
CONFORMING TO
sigreturn
is specific to Linux and should not be used in programs intended to be
portable.
FILES
/usr/src/linux/arch/i386/kernel/signal.c
/usr/src/linux/arch/alpha/kernel/entry.S
SEE ALSO
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