sigblock(2)
_________________________________________________________________
sigblock System Call
Add to set of blocked signals.
_________________________________________________________________
SYNTAX
#include <signal.h>
long sigblock (signal_mask)
long signal_mask;
PARAMETERS
signal_mask Set of additional signals to block.
DESCRIPTION
Sigblock adds the set of signals specified in <signal_mask> to
the set of signals currently being blocked from presentation.
Signal "s" is represented by the value "sigmask(s)" in
<signal_mask>.
It is not possible to block SIGKILL, SIGSTOP, or SIGCONT. It may
or may not be possible to block signals that are not defined by
the system. An attempt to block these signals will not produce
an error.
ACCESS CONTROL
None.
RETURN VALUE
<old_signal_mask>
The previous set of signals being blocked from
presentation.
EXCEPTIONS
None.
SEE ALSO
DG/UX 4.00 Page 1
Licensed material--property of copyright holder(s)
sigblock(2)
The related system calls: kill, sigvec, sigsetmask.
DG/UX 4.00 Page 2
Licensed material--property of copyright holder(s)