122110Smckusick /* 2*35302Sbostic * Copyright (c) 1988 Regents of the University of California. 3*35302Sbostic * All rights reserved. 4*35302Sbostic * 5*35302Sbostic * Redistribution and use in source and binary forms are permitted 6*35302Sbostic * provided that the above copyright notice and this paragraph are 7*35302Sbostic * duplicated in all such forms and that any documentation, 8*35302Sbostic * advertising materials, and other materials related to such 9*35302Sbostic * distribution and use acknowledge that the software was developed 10*35302Sbostic * by the University of California, Berkeley. The name of the 11*35302Sbostic * University may not be used to endorse or promote products derived 12*35302Sbostic * from this software without specific prior written permission. 13*35302Sbostic * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14*35302Sbostic * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15*35302Sbostic * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 1622110Smckusick */ 1718295Smckusick 1826590Sdonn #if defined(LIBC_SCCS) && !defined(lint) 19*35302Sbostic static char sccsid[] = "@(#)siginterrupt.c 5.3 (Berkeley) 08/02/88"; 20*35302Sbostic #endif /* LIBC_SCCS and not lint */ 2122110Smckusick 2218295Smckusick #include <signal.h> 2318295Smckusick 2418295Smckusick /* 2518295Smckusick * Set signal state to prevent restart of system calls 2618295Smckusick * after an instance of the indicated signal. 2718295Smckusick */ 2818295Smckusick siginterrupt(sig, flag) 2918295Smckusick int sig, flag; 3018295Smckusick { 3118295Smckusick struct sigvec sv; 3218295Smckusick int ret; 3318295Smckusick 34*35302Sbostic if ((ret = sigvec(sig, (struct sigvec *)0, &sv)) < 0) 3518295Smckusick return (ret); 3618295Smckusick if (flag) 3718295Smckusick sv.sv_flags |= SV_INTERRUPT; 3818295Smckusick else 3918295Smckusick sv.sv_flags &= ~SV_INTERRUPT; 40*35302Sbostic return (sigvec(sig, &sv, (struct sigvec *)0)); 4118295Smckusick } 42