From: Fabian Frederick <fabf@skynet.be>
Date: Wed, 8 Apr 2015 19:23:55 +0000 (+0200)
Subject: udf: improve error management in udf_CS0toNLS()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=78fc2e694f35d1d027448e5b7641f32719073320;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

udf: improve error management in udf_CS0toNLS()

Only callsite udf_get_filename() now returns error code as well.

Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Kara <jack@suse.cz>
---

diff --git a/fs/udf/unicode.c b/fs/udf/unicode.c
index 35cc9477b066..658aa14cc474 100644
--- a/fs/udf/unicode.c
+++ b/fs/udf/unicode.c
@@ -265,7 +265,7 @@ static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o,
 		memset(utf_o, 0, sizeof(struct ustr));
 		pr_err("unknown compression code (%d) stri=%s\n",
 		       cmp_id, ocu_i->u_name);
-		return 0;
+		return -EINVAL;
 	}
 
 	ocu = ocu_i->u_name;
@@ -357,8 +357,9 @@ int udf_get_filename(struct super_block *sb, uint8_t *sname, int slen,
 			goto out2;
 		}
 	} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
-		if (!udf_CS0toNLS(UDF_SB(sb)->s_nls_map, filename,
-				  unifilename)) {
+		ret = udf_CS0toNLS(UDF_SB(sb)->s_nls_map, filename,
+				   unifilename);
+		if (ret < 0) {
 			udf_debug("Failed in udf_get_filename: sname = %s\n",
 				  sname);
 			goto out2;