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* grub-core/disk/raid6_recover.c: Use unsigned arithmetics when

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appropriate.
This commit is contained in:
Vladimir Serbinenko 2013-10-25 22:51:03 +02:00
parent 3523b8d8a7
commit 428295739e
2 changed files with 12 additions and 6 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
2013-10-25 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/disk/raid6_recover.c: Use unsigned arithmetics when
appropriate.
2013-10-25 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/video/bitmap_scale.c: Use unsigned arithmetics when

13
grub-core/disk/raid6_recover.c
View file

@ -30,11 +30,11 @@ GRUB_MOD_LICENSE ("GPLv3+");
/* x**y. */
static grub_uint8_t powx[255 * 2];
/* Such an s that x**s = y */
static int powx_inv[256];
static unsigned powx_inv[256];
static const grub_uint8_t poly = 0x1d;
static void
grub_raid_block_mulx (int mul, char *buf, int size)
grub_raid_block_mulx (unsigned mul, char *buf, int size)
{
int i;
grub_uint8_t *p;
@ -48,7 +48,7 @@ grub_raid_block_mulx (int mul, char *buf, int size)
static void
grub_raid6_init_table (void)
{
int i;
unsigned i;
grub_uint8_t cur = 1;
for (i = 0; i < 255; i++)
@ -148,7 +148,7 @@ grub_raid6_recover (struct grub_diskfilter_segment *array, int disknr, int p,
else
{
/* Two bad devices */
int c;
unsigned c;
if (grub_diskfilter_read_node (&array->nodes[p], sector,
size >> GRUB_DISK_SECTOR_BITS, buf))
@ -162,10 +162,11 @@ grub_raid6_recover (struct grub_diskfilter_segment *array, int disknr, int p,
grub_crypto_xor (qbuf, qbuf, buf, size);
c = (255 - bad1 + (255 - powx_inv[(powx[bad2 - bad1 + 255] ^ 1)])) % 255;
c = ((255 ^ bad1)
+ (255 ^ powx_inv[(powx[bad2 + (bad1 ^ 255)] ^ 1)])) % 255;
grub_raid_block_mulx (c, qbuf, size);
c = (bad2 + c) % 255;
c = ((unsigned) bad2 + c) % 255;
grub_raid_block_mulx (c, pbuf, size);
grub_crypto_xor (pbuf, pbuf, qbuf, size);