rt_sigprocmask

RT_SIGPROCMASK(2)	   Linux Programmer’s Guide	    RT_SIGPROCMASK(2)



NAME
       rt_sigprocmask - Change the list of currently blocked signals

SYNOPSIS
       long sys_rt_sigprocmask (sigset_t *set, sigset_t *oset,
				size_t sigsetsize);


DESCRIPTION
       rt_sigprocmask changes the list of currently blocked signals. The  set
       value  stores the signal mask of the pending signals. The previous ac-
       tion on the signal is saved in oact. The value of  how  indicates  how
       the call should behave; its values are as follows:


       SIG_BLOCK
	      The  set of blocked signals is the union of the current set and
	      the set argument.


       SIG_UNBLOCK
	      The signals in set are removed from the current set of  blocked
	      signals. It is okay to unblock a signal that is not blocked.


       SIG_SETMASK
	      The  set of blocked signals is set to the set argument. sigset-
	      size should indicate the size of a sigset_t type.



RETURN VALUE
       rt_sigprocmask returns 0 on success; otherwise, rt_sigprocmask returns
       one of the errors listed in the "Errors" section.


ERRORS
       -EINVAL
	      sigsetsize was not equivalent to the size of a sigset_t type.


       -EFAULT
	      An invalid set, act, or oact was specified.


SEE ALSO
       rt_sigaction(2),	  rt_sigpending(2),   rt_sigqueueinfo(2),   rt_sigre-
       turn(2), rt_sigsuspend(2), rt_sigtimedwait(2)


AUTHOR
       Niki Rahimi



Linux 2.6			2004-March-12		    RT_SIGPROCMASK(2)