Merge tag 'platform-drivers-x86-v4.20-1' of git://git.infradead.org/linux-platform...

[linux-2.6-block.git] / lib / lz4 / lz4defs.h

diff --git a/lib/lz4/lz4defs.h b/lib/lz4/lz4defs.h
index 00a0b58a0871bc3c1f0afca8aa9bbd03aab09edd..1a7fa9d9170fb6007eb66a14b3425570294c92d9 100644 (file)
--- a/lib/lz4/lz4defs.h
+++ b/lib/lz4/lz4defs.h
@@ -75,6 +75,11 @@ typedef uintptr_t uptrval;
 #define WILDCOPYLENGTH 8
 #define LASTLITERALS 5
 #define MFLIMIT (WILDCOPYLENGTH + MINMATCH)
+/*
+ * ensure it's possible to write 2 x wildcopyLength
+ * without overflowing output buffer
+ */
+#define MATCH_SAFEGUARD_DISTANCE  ((2 * WILDCOPYLENGTH) - MINMATCH)
 
 /* Increase this value ==> compression run slower on incompressible data */
 #define LZ4_SKIPTRIGGER 6
@@ -222,6 +227,8 @@ typedef enum { noDict = 0, withPrefix64k, usingExtDict } dict_directive;
 typedef enum { noDictIssue = 0, dictSmall } dictIssue_directive;
 
 typedef enum { endOnOutputSize = 0, endOnInputSize = 1 } endCondition_directive;
-typedef enum { full = 0, partial = 1 } earlyEnd_directive;
+typedef enum { decode_full_block = 0, partial_decode = 1 } earlyEnd_directive;
+
+#define LZ4_STATIC_ASSERT(c)   BUILD_BUG_ON(!(c))
 
 #endif