From 98813c24fbb554df8f24e0da578d1f557050c23d Mon Sep 17 00:00:00 2001
From: LoveSy <shana@zju.edu.cn>
Date: Tue, 14 Mar 2023 10:12:23 +0800
Subject: [PATCH] Drop trailing garbage of gzip decompress

I previously refered to minigzip from libz which copies all trailing
data to the output when decompressing. However, gzip, on the other
hand, drop trailing garbage by default. Consider ZIMAGE append
the kernel size with zero padding, we should drop trailing garbage
as well.
---
 native/src/boot/compress.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/native/src/boot/compress.cpp b/native/src/boot/compress.cpp
index 9e5b09eb1..d588d1605 100644
--- a/native/src/boot/compress.cpp
+++ b/native/src/boot/compress.cpp
@@ -86,7 +86,7 @@ private:
                 inflate(&strm, flush);
             } else {
                 mode = COPY;
-                bwrite(b, 1);
+                return true;
             }
         }
         strm.next_in = (Bytef *) buf;
@@ -103,7 +103,7 @@ private:
                     code = deflate(&strm, flush);
                     break;
                 case COPY:
-                    return bwrite(buf, len);
+                    return true;
                 default:
                     // should have been handled
                     return false;
@@ -137,7 +137,7 @@ private:
                 }
                 // There is still data in the stream, we need to copy it
                 mode = COPY;
-                bwrite(strm.next_in, strm.avail_in);
+                return true;
             }
         } while (strm.avail_out == 0);
         return true;