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35 .Nd manipulate signal dispositions
40 .\" The following is Quite Ugly, but syntactically correct. Don't try to
43 .Fn sigset "int sig" "void \*(lp*disp\*(rp\*(lpint\*(rp\*(rp\*(rp\*(lpint"
46 This interface is made obsolete by
54 function manipulates the disposition of the signal
56 The new disposition is given in
64 or the address of a handler function,
67 is changed accordingly, and
69 is removed from the process' signal mask.
72 is the address of a handler function,
74 will be added to the process' signal mask during execution of the handler.
81 is added to the calling process' signal mask and the disposition of
92 and the previous disposition of
94 if it had not been blocked.
99 is set to indicate the error.
103 function will fail if:
108 is not a valid signal number.
110 An attempt is made to ignore a signal that cannot be ignored,