sigret(2)                      DG/UX R4.11MU05                     sigret(2)


NAME
       sigret - restore the process state to that contained in a signal
       frame

SYNOPSIS
       #include <signal.h>

       void  sigret ()

DESCRIPTION
       The sigret call is used to restore the process to the state before it
       invoked a signal handler (that is, this is a "return from signal
       handler").  The state is pointed to by the stack pointer and contains
       a signal frame that was pushed onto the process stack when the signal
       handler was invoked.

       Generally, the signal frame should be identical to the values in the
       original signal frame pushed onto the user's stack.  There are some
       fields of the signal frame that can be modified to alter the process
       context when it returns from the signal handler [see siginfo(5)].

ACCESS CONTROL
       None.

RETURN VALUE
       This function never returns.  Execution resumes at the context
       specified by the signal frame.  If an error occurs, this function
       terminates the process with an exit status which indicates that the
       process was killed by a SIGSEGV signal.

DIAGNOSTICS
       Errno may be set to one of the following error codes:

       EFAULT    The signal frame pointed to by the stack pointer could not
                 be accessed.

       EINVAL    The signal frame pointed to by the stack pointer contains
                 invalid information.

SEE ALSO
       kill(2), ptrace(2), sigblock(2), sigpause(2), sigsetmask(2),
       sigstack(2), sigvec(2), siginfo(5).


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