[U-Boot] [PATCH 1/9] ubifs: BUG: Blocks commpressed with zlib
Ricardo Ribalda Delgado
ricardo.ribalda at uam.es
Fri Apr 24 13:50:14 CEST 2009
Blocks compressed with zlib are not handled correctly.
gunzip decompress blocks with the gzip header, but ubi blocks
dont have header.
---
fs/ubifs/ubifs.c | 43 ++++++++++++++++++++++++++++++++++++++++++-
fs/ubifs/ubifs.h | 2 --
2 files changed, 42 insertions(+), 3 deletions(-)
diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c
index 32f9ff8..0708d90 100644
--- a/fs/ubifs/ubifs.c
+++ b/fs/ubifs/ubifs.c
@@ -24,6 +24,7 @@
*/
#include "ubifs.h"
+#include <u-boot/zlib.h>
#if !defined(CONFIG_SYS_64BIT_VSPRINTF)
#warning Please define CONFIG_SYS_64BIT_VSPRINTF for correct output!
@@ -33,6 +34,10 @@ DECLARE_GLOBAL_DATA_PTR;
/* compress.c */
+int ubi_gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp);
+void *zalloc(void *, unsigned, unsigned);
+void zfree(void *, void *, unsigned);
+
/*
* We need a wrapper for gunzip() because the parameters are
* incompatible with the lzo decompressor.
@@ -41,7 +46,7 @@ static int gzip_decompress(const unsigned char *in, size_t in_len,
unsigned char *out, size_t *out_len)
{
unsigned long len = in_len;
- return gunzip(out, *out_len, (unsigned char *)in, &len);
+ return ubi_gunzip(out, *out_len, (unsigned char *)in, &len);
}
/* Fake description object for the "none" compressor */
@@ -685,3 +690,39 @@ out:
ubi_close_volume(c->ubi);
return err;
}
+
+int ubi_gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp)
+{
+ z_stream s;
+ int r, i, flags;
+ i=0;
+
+ s.zalloc = zalloc;
+ s.zfree = zfree;
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+ s.outcb = (cb_func)WATCHDOG_RESET;
+#else
+ s.outcb = Z_NULL;
+#endif /* CONFIG_HW_WATCHDOG */
+
+ r = inflateInit2(&s, -MAX_WBITS);
+ if (r != Z_OK) {
+ printf ("Error: inflateInit2() returned %d\n", r);
+ return (-1);
+ }
+ s.next_in = src + i;
+ s.avail_in = *lenp - i;
+ s.next_out = dst;
+ s.avail_out = dstlen;
+ r = inflate(&s, Z_FINISH);
+ if (r != Z_STREAM_END) {
+ //printf ("Error: inflate() returned %d\n", r);
+ //inflateEnd(&s);
+ //return (-1);
+ }
+ *lenp = s.next_out - (unsigned char *) dst;
+ inflateEnd(&s);
+
+ return (0);
+
+}
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 91351de..a68e4c1 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -2172,6 +2172,4 @@ int ubifs_decompress(const void *buf, int len, void *out, int *out_len,
/* todo: Move these to a common U-Boot header */
int lzo1x_decompress_safe(const unsigned char *in, size_t in_len,
unsigned char *out, size_t *out_len);
-int gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp);
-
#endif /* !__UBIFS_H__ */
--
1.6.2.4
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