Signed-off-by: David Sterba <[email protected]>
---
cmds-balance.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/cmds-balance.c b/cmds-balance.c
index 1fd8d2018b7a..457d693eec42 100644
--- a/cmds-balance.c
+++ b/cmds-balance.c
@@ -161,6 +161,37 @@ static int parse_range_strict(const char *range, u64
*start, u64 *end)
return 1;
}
+/*
+ * Convert 64bit range to 32bit with boundary checkso
+ */
+static int range_to_u32(u64 start, u64 end, u32 *start32, u32 *end32)
+{
+ if (start > (u32)-1)
+ return 1;
+
+ if (end != (u64)-1 && end > (u32)-1)
+ return 1;
+
+ *start32 = (u32)start;
+ *end32 = (u32)end;
+
+ return 0;
+}
+
+static int parse_range_u32(const char *range, u32 *start, u32 *end)
+{
+ u64 tmp_start;
+ u64 tmp_end;
+
+ if (parse_range(range, &tmp_start, &tmp_end))
+ return 1;
+
+ if (range_to_u32(tmp_start, tmp_end, start, end))
+ return 1;
+
+ return 0;
+}
+
static int parse_filters(char *filters, struct btrfs_balance_args *args)
{
char *this_char;
--
2.6.1
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