dedup

commit 874e674f9ffc61d83ff6e756d9749d4ae9d1129b
parent 738efabad162925277a2e7bb809ea127fd75d497
Author: sin <sin@2f30.org>
Date:   Wed, 10 Apr 2019 13:52:45 +0100

Add an explicit check for unsupported algos to make the error obvious

Diffstat:
M
dedup.c
 | 
6
++++++

1 file changed, 6 insertions(+), 0 deletions(-)
diff --git a/dedup.c b/dedup.c
@@ -470,9 +470,15 @@ load_blk_hdr(void)
 	v &= COMPR_ALGO_MASK;
 	compr_algo = v;
 
+	if (compr_algo < 0 || compr_algo >= NR_COMPRS)
+		errx(1, "unsupported compression algorithm :%d", compr_algo);
+
 	v = blk_hdr.flags >> HASH_ALGO_SHIFT;
 	v &= HASH_ALGO_MASK;
 	hash_algo = v;
+
+	if (hash_algo < 0 || hash_algo >= NR_HASHES)
+		errx(1, "unsupported hash algorithm :%d", hash_algo);
 }
 
 static void