4.3BSD - /usr/src/lib/libc/gen/siginterrupt.c

   1: /*
   2:  * Copyright (c) 1985 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #if defined(LIBC_SCCS) && !defined(lint)
   8: static char sccsid[] = "@(#)siginterrupt.c	5.2 (Berkeley) 3/9/86";
   9: #endif LIBC_SCCS and not lint
  10: 
  11: #include <signal.h>
  12: 
  13: /*
  14:  * Set signal state to prevent restart of system calls
  15:  * after an instance of the indicated signal.
  16:  */
  17: siginterrupt(sig, flag)
  18:     int sig, flag;
  19: {
  20:     struct sigvec sv;
  21:     int ret;
  22: 
  23:     if ((ret = sigvec(sig, 0, &sv)) < 0)
  24:         return (ret);
  25:     if (flag)
  26:         sv.sv_flags |= SV_INTERRUPT;
  27:     else
  28:         sv.sv_flags &= ~SV_INTERRUPT;
  29:     return (sigvec(sig, &sv, 0));
  30: }

Defined functions

Defined variables