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Revision 8097110d179b874d91c6495330c2b96c991e8c6e authored by Cliff Wickman on 24 June 2008, 17:20:06 UTC, committed by Tony Luck on 24 June 2008, 17:20:06 UTC 
[IA64] Handle count==0 in sn2_ptc_proc_write()
 
The fix applied in e0c6d97c65e0784aade7e97b9411f245a6c543e7
"security hole in sn2_ptc_proc_write" didn't take into account
the case where count==0 (which results in a buffer underrun
when adding the trailing '\0').  Thanks to Andi Kleen for
pointing this out.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
1 parent 2826f8c
Raw File
compress.c 
/*
 * Cryptographic API.
 *
 * Compression operations.
 *
 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
 *
 * 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/types.h>
#include <linux/crypto.h>
#include <linux/errno.h>
#include <linux/string.h>
#include "internal.h"

static int crypto_compress(struct crypto_tfm *tfm,
                            const u8 *src, unsigned int slen,
                            u8 *dst, unsigned int *dlen)
{
	return tfm->__crt_alg->cra_compress.coa_compress(tfm, src, slen, dst,
	                                                 dlen);
}

static int crypto_decompress(struct crypto_tfm *tfm,
                             const u8 *src, unsigned int slen,
                             u8 *dst, unsigned int *dlen)
{
	return tfm->__crt_alg->cra_compress.coa_decompress(tfm, src, slen, dst,
	                                                   dlen);
}

int crypto_init_compress_ops(struct crypto_tfm *tfm)
{
	struct compress_tfm *ops = &tfm->crt_compress;

	ops->cot_compress = crypto_compress;
	ops->cot_decompress = crypto_decompress;
	
	return 0;
}

void crypto_exit_compress_ops(struct crypto_tfm *tfm)
{
}
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