NAME    [Toc]    [Back]

       sigblock  -  Provide a compatibility interface to the sigprocmask
 function

SYNOPSIS    [Toc]    [Back]

       int sigblock(
               int mask );

PARAMETERS    [Toc]    [Back]

       Specifies the signals to be added to the  set  of  signals
       currently being blocked from delivery.

DESCRIPTION    [Toc]    [Back]

       The  sigblock()  function  causes the signals specified by
       the mask parameter to be added to the set of signals  currently
  being  blocked  from  delivery.  The  signals  are
       blocked from delivery by logically ORing  the  mask  value
       into  the  signal mask of the process. Signal i is blocked
       if the i-th bit in the mask parameter is  a  value  of  1.
       Only  signals with values 1-31 can be masked with the sigblock()
 function.

NOTES    [Toc]    [Back]

       It is not possible to block SIGKILL. The  system  provides
       no indication of this restriction.

       The sigblock() function is provided for compatibility with
       other UNIX systems. It provides a subset of the operations
       provided by the sigprocmask() function.

RETURN VALUES    [Toc]    [Back]

       On  completion,  the  previous  set  of  masked signals is
       returned.

SEE ALSO    [Toc]    [Back]

       Functions: kill(2), sigaction(2), sigprocmask(2),  sigsuspend(2), sigvec(2), sigpause(3)



                                                      sigblock(2)