SIGRETURN(2) Linux Programmer's Manual SIGRETURN(2)NAMEsigreturn - 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 signal
handler will call sigreturn() upon return. This inserted call to sigre‐
turn() cleans up the stack so that the process can restart from where
it was interrupted by the signal.
RETURN VALUEsigreturn() never returns.
WARNING
The sigreturn() call is used by the kernel to implement signal han‐
dlers. It should never be called directly. Better yet, the specific use
of the __unused argument varies depending on the architecture.
CONFORMING TOsigreturn() 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 ALSOkill(2), signal(2), signal(7)Linux 1.3.20 1995-08-21 SIGRETURN(2)