1*22110Smckusick /* 2*22110Smckusick * Copyright (c) 1985 Regents of the University of California. 3*22110Smckusick * All rights reserved. The Berkeley software License Agreement 4*22110Smckusick * specifies the terms and conditions for redistribution. 5*22110Smckusick */ 618295Smckusick 7*22110Smckusick #ifndef lint 8*22110Smckusick static char sccsid[] = "@(#)siginterrupt.c 5.1 (Berkeley) 06/05/85"; 9*22110Smckusick #endif not lint 10*22110Smckusick 1118295Smckusick #include <signal.h> 1218295Smckusick 1318295Smckusick /* 1418295Smckusick * Set signal state to prevent restart of system calls 1518295Smckusick * after an instance of the indicated signal. 1618295Smckusick */ 1718295Smckusick siginterrupt(sig, flag) 1818295Smckusick int sig, flag; 1918295Smckusick { 2018295Smckusick struct sigvec sv; 2118295Smckusick int ret; 2218295Smckusick 2318295Smckusick if ((ret = sigvec(sig, 0, &sv)) < 0) 2418295Smckusick return (ret); 2518295Smckusick if (flag) 2618295Smckusick sv.sv_flags |= SV_INTERRUPT; 2718295Smckusick else 2818295Smckusick sv.sv_flags &= ~SV_INTERRUPT; 2918295Smckusick return (sigvec(sig, &sv, 0)); 3018295Smckusick } 31