X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=lib%2Fgunzip.c;h=bee3b9261f3449c438c43fac77bac45cde127238;hb=ebdd07f5b2e4b00eee7f8630b3b026a65c3f51c4;hp=bc746d655e60aebc84c207c634728b3f1a4e1e40;hpb=eb6b50f631628f48b7e72432ae878e6ff0e306c3;p=oweals%2Fu-boot.git

diff --git a/lib/gunzip.c b/lib/gunzip.c
index bc746d655e..bee3b9261f 100644
--- a/lib/gunzip.c
+++ b/lib/gunzip.c
@@ -1,18 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2000-2006
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
-#include <watchdog.h>
+#include <blk.h>
 #include <command.h>
 #include <console.h>
+#include <div64.h>
+#include <gzip.h>
 #include <image.h>
 #include <malloc.h>
+#include <memalign.h>
+#include <u-boot/crc.h>
+#include <watchdog.h>
 #include <u-boot/zlib.h>
-#include <div64.h>
 
 #define HEADER0			'\x1f'
 #define HEADER1			'\x8b'
@@ -41,7 +44,7 @@ void gzfree(void *x, void *addr, unsigned nb)
 	free (addr);
 }
 
-int gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp)
+int gzip_parse_header(const unsigned char *src, unsigned long len)
 {
 	int i, flags;
 
@@ -62,12 +65,21 @@ int gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp)
 			;
 	if ((flags & HEAD_CRC) != 0)
 		i += 2;
-	if (i >= *lenp) {
+	if (i >= len) {
 		puts ("Error: gunzip out of data in header\n");
 		return (-1);
 	}
+	return i;
+}
+
+int gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp)
+{
+	int offset = gzip_parse_header(src, *lenp);
+
+	if (offset < 0)
+		return offset;
 
-	return zunzip(dst, dstlen, src, lenp, 1, i);
+	return zunzip(dst, dstlen, src, lenp, 1, offset);
 }
 
 #ifdef CONFIG_CMD_UNZIP
@@ -193,7 +205,7 @@ int gzwrite(unsigned char *src, int len,
 
 	s.next_in = src + i;
 	s.avail_in = payload_size+8;
-	writebuf = (unsigned char *)malloc(szwritebuf);
+	writebuf = (unsigned char *)malloc_cache_aligned(szwritebuf);
 
 	/* decompress until deflate stream ends or end of file */
 	do {