Change in flashrom[staging]: layout: Add a function to check if numeric range is included

[David Hendricks (Code Review)]

David Hendricks has uploaded this change for review. ( https://review.coreboot.org/20569

Change subject: layout: Add a function to check if numeric range is included
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layout: Add a function to check if numeric range is included

This adds a helper function to iterate thru ranges to check if a
specified numeric range is marked as included in the layout.

If no include -i arguments were used to specify included regions,
then all any range will return true.

Change-Id: I096410ea957fe204affa67734e7589a6e4424a26
Signed-off-by: David Hendricks 
---
M layout.c
M layout.h
2 files changed, 26 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/69/20569/1

diff --git a/layout.c b/layout.c
index 9bf0b03..a35a72c 100644
--- a/layout.c
+++ b/layout.c
@@ -225,3 +225,27 @@

return ret;
 }
+
+/* returns 1 if any offset within [base, base+len) is included in layout */
+int range_is_included(chipoff_t start, chipoff_t end)
+{
+	int i;
+
+	if (num_include_args == 0)
+		return 1;
+
+	for (i = 0; i < layout.num_entries; i++) {
+		struct romentry entry = layout.entries[i];
+
+		if (!entry.included)
+			continue;
+		if (end < entry.start)
+			continue;
+		if (start > entry.end)
+			continue;
+
+		return 1;
+	}
+
+	return 0;
+}
diff --git a/layout.h b/layout.h
index c93d754..6fc4e2e 100644
--- a/layout.h
+++ b/layout.h
@@ -66,4 +66,6 @@

int process_include_args(struct flashrom_layout *);

+int range_is_included(chipoff_t start, chipoff_t end);
+
 #endif				/* !__LAYOUT_H__ */