sigsetmask(2)
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sigsetmask System Call
Specify set of blocked signals.
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SYNTAX
#include <signal.h>
int sigsetmask (signal_mask)
int signal_mask;
PARAMETERS
signal_mask Set of signals to be blocked.
DESCRIPTION
Sigsetmask assigns the set of signals specified in <signal_mask>
to the set of signals 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
The related system calls: kill, sigvec, sigblock, sigpause.
DG/UX 4.00 Page 1
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