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NAME

       sigreturn - 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
       sigreturn() cleans up the stack so that the process  can  restart  from
       where it was interrupted by the signal.

RETURN VALUE

       sigreturn() never returns.

FILES

       /usr/src/linux/arch/i386/kernel/signal.c
       /usr/src/linux/arch/alpha/kernel/entry.S

CONFORMING TO

       sigreturn()  is  specific  to  Linux and should not be used in programs
       intended to be portable.

NOTES

       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.

SEE ALSO

       kill(2), signal(2), signal(7)

COLOPHON

       This  page  is  part of release 2.77 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.