Revision bd4c625c061c2a38568d0add3478f59172455159 authored by Linus Torvalds on 13 July 2005, 03:21:28 UTC, committed by Linus Torvalds on 13 July 2005, 03:21:28 UTC
This was a pure indentation change, using: scripts/Lindent fs/reiserfs/*.c include/linux/reiserfs_*.h to make reiserfs match the regular Linux indentation style. As Jeff Mahoney <jeffm@suse.com> writes: The ReiserFS code is a mix of a number of different coding styles, sometimes different even from line-to-line. Since the code has been relatively stable for quite some time and there are few outstanding patches to be applied, it is time to reformat the code to conform to the Linux style standard outlined in Documentation/CodingStyle. This patch contains the result of running scripts/Lindent against fs/reiserfs/*.c and include/linux/reiserfs_*.h. There are places where the code can be made to look better, but I'd rather keep those patches separate so that there isn't a subtle by-hand hand accident in the middle of a huge patch. To be clear: This patch is reformatting *only*. A number of patches may follow that continue to make the code more consistent with the Linux coding style. Hans wasn't particularly enthusiastic about these patches, but said he wouldn't really oppose them either. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 7fa94c8
arc4.c
/*
* Cryptographic API
*
* ARC4 Cipher Algorithm
*
* Jon Oberheide <jon@oberheide.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/crypto.h>
#define ARC4_MIN_KEY_SIZE 1
#define ARC4_MAX_KEY_SIZE 256
#define ARC4_BLOCK_SIZE 1
struct arc4_ctx {
u8 S[256];
u8 x, y;
};
static int arc4_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
{
struct arc4_ctx *ctx = ctx_arg;
int i, j = 0, k = 0;
ctx->x = 1;
ctx->y = 0;
for(i = 0; i < 256; i++)
ctx->S[i] = i;
for(i = 0; i < 256; i++)
{
u8 a = ctx->S[i];
j = (j + in_key[k] + a) & 0xff;
ctx->S[i] = ctx->S[j];
ctx->S[j] = a;
if(++k >= key_len)
k = 0;
}
return 0;
}
static void arc4_crypt(void *ctx_arg, u8 *out, const u8 *in)
{
struct arc4_ctx *ctx = ctx_arg;
u8 *const S = ctx->S;
u8 x = ctx->x;
u8 y = ctx->y;
u8 a, b;
a = S[x];
y = (y + a) & 0xff;
b = S[y];
S[x] = b;
S[y] = a;
x = (x + 1) & 0xff;
*out++ = *in ^ S[(a + b) & 0xff];
ctx->x = x;
ctx->y = y;
}
static struct crypto_alg arc4_alg = {
.cra_name = "arc4",
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = ARC4_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct arc4_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(arc4_alg.cra_list),
.cra_u = { .cipher = {
.cia_min_keysize = ARC4_MIN_KEY_SIZE,
.cia_max_keysize = ARC4_MAX_KEY_SIZE,
.cia_setkey = arc4_set_key,
.cia_encrypt = arc4_crypt,
.cia_decrypt = arc4_crypt } }
};
static int __init arc4_init(void)
{
return crypto_register_alg(&arc4_alg);
}
static void __exit arc4_exit(void)
{
crypto_unregister_alg(&arc4_alg);
}
module_init(arc4_init);
module_exit(arc4_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ARC4 Cipher Algorithm");
MODULE_AUTHOR("Jon Oberheide <jon@oberheide.org>");
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