5 files changed, 42 insertions, 34 deletions

diff --git a/src/liblzma/common/auto_decoder.c b/src/liblzma/common/auto_decoder.c
index acfc3549..4272dadf 100644
--- a/src/liblzma/common/auto_decoder.c
+++ b/src/liblzma/common/auto_decoder.c
@@ -63,15 +63,15 @@ auto_decode(lzma_coder *coder, lzma_allocator *allocator,
 			return_if_error(lzma_alone_decoder_init(&coder->next,
 					allocator, coder->memlimit));
 
-			// If the application wants a warning about missing
+			// If the application wants to know about missing
 			// integrity check or about the check in general, we
 			// need to handle it here, because LZMA_Alone decoder
 			// doesn't accept any flags.
-			if (coder->flags & LZMA_WARN_NO_CHECK)
+			if (coder->flags & LZMA_TELL_NO_CHECK)
 				return LZMA_NO_CHECK;
 
-			if (coder->flags & LZMA_TELL_CHECK)
-				return LZMA_SEE_CHECK;
+			if (coder->flags & LZMA_TELL_ANY_CHECK)
+				return LZMA_GET_CHECK;
 		}
 
 	// Fall through
@@ -116,11 +116,11 @@ auto_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 
 static lzma_check
-auto_decoder_see_check(const lzma_coder *coder)
+auto_decoder_get_check(const lzma_coder *coder)
 {
-	// It is LZMA_Alone if see_check is NULL.
-	return coder->next.see_check == NULL ? LZMA_CHECK_NONE
-			: coder->next.see_check(coder->next.coder);
+	// It is LZMA_Alone if get_check is NULL.
+	return coder->next.get_check == NULL ? LZMA_CHECK_NONE
+			: coder->next.get_check(coder->next.coder);
 }
 
 
@@ -140,7 +140,7 @@ auto_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
 
 		next->code = &auto_decode;
 		next->end = &auto_decoder_end;
-		next->see_check = &auto_decoder_see_check;
+		next->get_check = &auto_decoder_get_check;
 		next->coder->next = LZMA_NEXT_CODER_INIT;
 	}
 
diff --git a/src/liblzma/common/common.c b/src/liblzma/common/common.c
index feac9cbf..c5f5039d 100644
--- a/src/liblzma/common/common.c
+++ b/src/liblzma/common/common.c
@@ -296,3 +296,10 @@ lzma_end(lzma_stream *strm)
 
 	return;
 }
+
+
+extern LZMA_API lzma_check
+lzma_get_check(const lzma_stream *strm)
+{
+	return strm->internal->next.get_check(strm->internal->next.coder);
+}
diff --git a/src/liblzma/common/common.h b/src/liblzma/common/common.h
index 81f2a9a4..bb999842 100644
--- a/src/liblzma/common/common.h
+++ b/src/liblzma/common/common.h
@@ -60,10 +60,10 @@
 /// Supported flags that can be passed to lzma_stream_decoder()
 /// or lzma_auto_decoder().
 #define LZMA_SUPPORTED_FLAGS \
-	(LZMA_WARN_NO_CHECK \
-	| LZMA_WARN_UNSUPPORTED_CHECK \
-	| LZMA_TELL_CHECK \
-	| LZMA_CONCATENATED)
+	( LZMA_TELL_NO_CHECK \
+	| LZMA_TELL_UNSUPPORTED_CHECK \
+	| LZMA_TELL_ANY_CHECK \
+	| LZMA_CONCATENATED )
 
 
 ///////////
@@ -134,10 +134,11 @@ struct lzma_next_coder_s {
 
 	/// Pointer to function to return the type of the integrity check.
 	/// Most coders won't support this.
-	lzma_check (*see_check)(const lzma_coder *coder);
+	lzma_check (*get_check)(const lzma_coder *coder);
 
-// 	uint64_t (*memconfig)(
-// 			lzma_coder *coder, uint64_t memlimit, bool change);
+	/// Pointer to function to get and/or change the memory usage limit.
+	/// If memlimit == 0, the limit is not changed.
+	uint64_t (*memconfig)(lzma_coder *coder, uint64_t memlimit);
 };
 
 
@@ -148,7 +149,8 @@ struct lzma_next_coder_s {
 		.init = (uintptr_t)(NULL), \
 		.code = NULL, \
 		.end = NULL, \
-		.see_check = NULL, \
+		.get_check = NULL, \
+		.memconfig = NULL, \
 	}
 
 
diff --git a/src/liblzma/common/easy.c b/src/liblzma/common/easy.c
index ae0e4f74..6f6dc0fa 100644
--- a/src/liblzma/common/easy.c
+++ b/src/liblzma/common/easy.c
@@ -113,7 +113,7 @@ lzma_easy_encoder(lzma_stream *strm, lzma_easy_level level)
 }
 
 
-extern LZMA_API uint32_t
+extern LZMA_API uint64_t
 lzma_easy_memory_usage(lzma_easy_level level)
 {
 	lzma_filter filters[5];
diff --git a/src/liblzma/common/stream_decoder.c b/src/liblzma/common/stream_decoder.c
index cf7af7ac..7d1df9cc 100644
--- a/src/liblzma/common/stream_decoder.c
+++ b/src/liblzma/common/stream_decoder.c
@@ -55,14 +55,14 @@ struct lzma_coder_s {
 
 	/// If true, LZMA_NO_CHECK is returned if the Stream has
 	/// no integrity check.
-	bool warn_no_check;
+	bool tell_no_check;
 
 	/// If true, LZMA_UNSUPPORTED_CHECK is returned if the Stream has
 	/// an integrity check that isn't supported by this liblzma build.
-	bool warn_unsupported_check;
+	bool tell_unsupported_check;
 
-	/// If true, LZMA_SEE_CHECK is returned after decoding Stream Header.
-	bool tell_check;
+	/// If true, LZMA_GET_CHECK is returned after decoding Stream Header.
+	bool tell_any_check;
 
 	/// If true, we will decode concatenated Streams that possibly have
 	/// Stream Padding between or after them. LZMA_STREAM_END is returned
@@ -141,17 +141,17 @@ stream_decode(lzma_coder *coder, lzma_allocator *allocator,
 
 		// Detect if there's no integrity check or if it is
 		// unsupported if those were requested by the application.
-		if (coder->warn_no_check && coder->stream_flags.check
+		if (coder->tell_no_check && coder->stream_flags.check
 				== LZMA_CHECK_NONE)
 			return LZMA_NO_CHECK;
 
-		if (coder->warn_unsupported_check
+		if (coder->tell_unsupported_check
 				&& !lzma_check_is_supported(
 					coder->stream_flags.check))
 			return LZMA_UNSUPPORTED_CHECK;
 
-		if (coder->tell_check)
-			return LZMA_SEE_CHECK;
+		if (coder->tell_any_check)
+			return LZMA_GET_CHECK;
 	}
 
 	// Fall through
@@ -366,7 +366,7 @@ stream_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
 
 
 static lzma_check
-stream_decoder_see_check(const lzma_coder *coder)
+stream_decoder_get_check(const lzma_coder *coder)
 {
 	return coder->stream_flags.check;
 }
@@ -388,19 +388,18 @@ lzma_stream_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
 
 		next->code = &stream_decode;
 		next->end = &stream_decoder_end;
-		next->see_check = &stream_decoder_see_check;
+		next->get_check = &stream_decoder_get_check;
 
 		next->coder->block_decoder = LZMA_NEXT_CODER_INIT;
 		next->coder->index_hash = NULL;
 	}
 
 	next->coder->memlimit = memlimit;
-	next->coder->warn_no_check = (flags & LZMA_WARN_NO_CHECK) != 0;
-	next->coder->warn_unsupported_check
-			= (flags & LZMA_WARN_UNSUPPORTED_CHECK) != 0;
-	next->coder->tell_check = (flags & LZMA_TELL_CHECK) != 0;
-	next->coder->concatenated
-			= (flags & LZMA_CONCATENATED) != 0;
+	next->coder->tell_no_check = (flags & LZMA_TELL_NO_CHECK) != 0;
+	next->coder->tell_unsupported_check
+			= (flags & LZMA_TELL_UNSUPPORTED_CHECK) != 0;
+	next->coder->tell_any_check = (flags & LZMA_TELL_ANY_CHECK) != 0;
+	next->coder->concatenated = (flags & LZMA_CONCATENATED) != 0;
 
 	return stream_decoder_reset(next->coder, allocator);
 }