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-rw-r--r--fs/udf/unicode.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/udf/unicode.c b/fs/udf/unicode.c
index 3ff42f4..695389a 100644
--- a/fs/udf/unicode.c
+++ b/fs/udf/unicode.c
@@ -335,9 +335,21 @@ try_again:
return u_len;
}
-int udf_CS0toUTF8(uint8_t *utf_o, int o_len, const uint8_t *ocu_i, int i_len)
+int udf_dstrCS0toUTF8(uint8_t *utf_o, int o_len,
+ const uint8_t *ocu_i, int i_len)
{
- return udf_name_from_CS0(utf_o, o_len, ocu_i, i_len,
+ int s_len = 0;
+
+ if (i_len > 0) {
+ s_len = ocu_i[i_len - 1];
+ if (s_len >= i_len) {
+ pr_err("incorrect dstring lengths (%d/%d)\n",
+ s_len, i_len);
+ return -EINVAL;
+ }
+ }
+
+ return udf_name_from_CS0(utf_o, o_len, ocu_i, s_len,
udf_uni2char_utf8, 0);
}
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