fix intrctl_io_firstline() to properly return NULL if there are no records
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@ -1,4 +1,4 @@
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/* $NetBSD: intrctl_io.c,v 1.3 2016/08/05 06:58:55 knakahara Exp $ */
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/* $NetBSD: intrctl_io.c,v 1.4 2018/06/23 11:11:00 jdolecek Exp $ */
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/*
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* Copyright (c) 2015 Internet Initiative Japan Inc.
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@ -27,7 +27,7 @@
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: intrctl_io.c,v 1.3 2016/08/05 06:58:55 knakahara Exp $");
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__RCSID("$NetBSD: intrctl_io.c,v 1.4 2018/06/23 11:11:00 jdolecek Exp $");
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#include <sys/sysctl.h>
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#include <sys/intrio.h>
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@ -108,8 +108,15 @@ struct intrio_list_line *
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intrctl_io_firstline(void *handle)
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{
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struct intrio_list *list = handle;
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struct intrio_list_line *next;
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char *buf_end;
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return (struct intrio_list_line *)((char *)list + list->il_lineoffset);
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buf_end = (char *)list + list->il_bufsize;
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next = (struct intrio_list_line *)((char *)list + list->il_lineoffset);
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if ((char *)next >= buf_end)
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return NULL;
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return next;
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}
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struct intrio_list_line *
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