X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fsha1.h;h=a0d633569e31bd221576d3cd226e126474650ce8;hp=5c1436170f8b2b79b6beb3098dd44bf36d737002;hb=ed828dc4cbf4eabc9f8b32cb4c6a86a04e087f7a;hpb=db046c7191d39535dfb49e9b9bdfc0751a8c17b4

diff --git a/src/sha1.h b/src/sha1.h
index 5c143617..a0d63356 100644
--- a/src/sha1.h
+++ b/src/sha1.h
@@ -25,13 +25,32 @@ static inline bool hashes_equal(const u8 h1[SHA1_HASH_SIZE],
 {
 	return memcmp(h1, h2, SHA1_HASH_SIZE) == 0;
 }
+static inline int hashes_cmp(const u8 h1[SHA1_HASH_SIZE],
+			     const u8 h2[SHA1_HASH_SIZE])
+{
+	return memcmp(h1, h2, SHA1_HASH_SIZE);
+}
 
 /* Prints a hash code field. */
-static inline void print_hash(const u8 hash[])
+static inline void print_hash(const u8 hash[SHA1_HASH_SIZE])
 {
 	print_byte_field(hash, SHA1_HASH_SIZE);
 }
 
+static inline bool is_zero_hash(const u8 hash[SHA1_HASH_SIZE])
+{
+	if (hash)
+		for (u8 i = 0; i < SHA1_HASH_SIZE / 4; i++)
+			if (((u32*)hash)[i])
+				return false;
+	return true;
+}
+
+static inline void zero_hash(u8 hash[SHA1_HASH_SIZE])
+{
+	memset(hash, 0, SHA1_HASH_SIZE);
+}
+
 
 #ifdef WITH_LIBCRYPTO