File exfatprogs-libexfat-make-set_bit_le-64-bit-comp... of Package exfatprogs.27900

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File exfatprogs-libexfat-make-set_bit_le-64-bit-compatible.patch of Package exfatprogs.27900

From 53e575bb646422860b85299cd93a80659d5a2189 Mon Sep 17 00:00:00 2001
From: Eric Sandeen <sandeen@sandeen.net>
Date: Wed, 31 Mar 2021 21:40:54 +0900
Subject: [PATCH] exfatprogs: libexfat: make set_bit_le() 64-bit compatible
References: bsc#1184882

Eric found that bitmap data is not written normally in bitmap location
on s390x(64bit big endian system).
This patch make set_bit_le() etc 64-bit compatible, something like this
does seem to put the bits in the right place in the allocation bitmap at
mkfs time.

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>

diff --git a/lib/libexfat.c b/lib/libexfat.c
index 61a0778..13dfbaf 100644
--- a/lib/libexfat.c
+++ b/lib/libexfat.c
@@ -20,18 +20,20 @@
 #include "libexfat.h"
 #include "version.h"
 
+#define BITS_PER_LONG		(sizeof(long) * CHAR_BIT)
+
 #ifdef WORDS_BIGENDIAN
-#define BITOP_LE_SWIZZLE	(~0x7)
+#define BITOP_LE_SWIZZLE	((BITS_PER_LONG - 1) & ~0x7)
 #else
 #define BITOP_LE_SWIZZLE        0
 #endif
 
-#define BIT_MASK(nr)            ((1) << ((nr) % 32))
-#define BIT_WORD(nr)            ((nr) / 32)
+#define BIT_MASK(nr)            (1UL << ((nr) % BITS_PER_LONG))
+#define BIT_WORD(nr)            ((nr) / BITS_PER_LONG)
 
 unsigned int print_level  = EXFAT_INFO;
 
-static inline void set_bit(int nr, unsigned int *addr)
+static inline void set_bit(int nr, void *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -39,7 +41,7 @@ static inline void set_bit(int nr, unsigned int *addr)
 	*p  |= mask;
 }
 
-static inline void clear_bit(int nr, unsigned int *addr)
+static inline void clear_bit(int nr, void *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);

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File exfatprogs-libexfat-make-set_bit_le-64-bit-compatible.patch of Package exfatprogs.27900

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