D38313.diff
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D38313.diff
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	diff --git a/stand/kboot/kboot.h b/stand/kboot/kboot.h
	--- a/stand/kboot/kboot.h
	+++ b/stand/kboot/kboot.h
	@@ -44,6 +44,7 @@
	uint64_t first_avail(uint64_t align, uint64_t min_size, uint64_t type);
	void print_avail(void);
	bool populate_avail_from_iomem(void);
	+uint64_t space_avail(uint64_t start);

	/* util.c */
	bool file2str(const char fn, char buffer, size_t buflen);
	diff --git a/stand/kboot/seg.c b/stand/kboot/seg.c
	--- a/stand/kboot/seg.c
	+++ b/stand/kboot/seg.c
	@@ -344,3 +344,22 @@
	close(fd);
	return true;
	}
	+
	+/*
	+ * Return the amount of space available in the segment that @start@ lives in,
	+ * from @start@ to the end of the segment.
	+ */
	+uint64_t
	+space_avail(uint64_t start)
	+{
	+ for (int i = 0; i < nr_seg; i++) {
	+ if (start >= segs[i].start && start <= segs[i].end)
	+ return segs[i].end - start;
	+ }
	+
	+ /*
	+ * Properly used, we should never get here. Unsure if this should be a
	+ * panic or not.
	+ */
	+ return 0;
	+}