usr/src/lib/libc/gen/siginterrupt.c

/*      siginterrupt.c  4.1     85/03/11        */

#include <signal.h>

/*
 * Set signal state to prevent restart of system calls
 * after an instance of the indicated signal.
 */
siginterrupt(sig, flag)
        int sig, flag;
{
        struct sigvec sv;
        int ret;

        if ((ret = sigvec(sig, 0, &sv)) < 0)
                return (ret);
        if (flag)
                sv.sv_flags |= SV_INTERRUPT;
        else
                sv.sv_flags &= ~SV_INTERRUPT;
        return (sigvec(sig, &sv, 0));
}