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28 .\" @(#)sigblock.2 8.1 (Berkeley) 6/2/93
29 .\" $FreeBSD: src/lib/libc/compat-43/sigblock.2,v 1.5.2.2 2001/12/21 10:07:08 ru Exp $
42 .Fn sigblock "int mask"
47 This interface is made obsolete by
52 adds the signals specified in
54 to the set of signals currently
55 being blocked from delivery.
56 Signals are blocked if the
61 is provided to construct the mask for a given
64 It is not possible to block
68 this restriction is silently
69 imposed by the system.
71 The previous set of masked signals is returned.
81 function call appeared in
83 and has been deprecated.