patch-2.4.22 linux-2.4.22/crypto/compress.c

• Lines: 64
• Date: 2003-08-25 04:44:40.000000000 -0700
• Orig file: linux-2.4.21/crypto/compress.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/crypto/compress.c linux-2.4.22/crypto/compress.c
@@ -0,0 +1,63 @@
+/*
+ * 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 <asm/scatterlist.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(crypto_tfm_ctx(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(crypto_tfm_ctx(tfm),
+	                                                   src, slen, dst,
+	                                                   dlen);
+}
+
+int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags)
+{
+	return flags ? -EINVAL : 0;
+}
+
+int crypto_init_compress_ops(struct crypto_tfm *tfm)
+{
+	int ret = 0;
+	struct compress_tfm *ops = &tfm->crt_compress;
+	
+	ret = tfm->__crt_alg->cra_compress.coa_init(crypto_tfm_ctx(tfm));
+	if (ret)
+		goto out;
+
+	ops->cot_compress = crypto_compress;
+	ops->cot_decompress = crypto_decompress;
+	
+out:
+	return ret;
+}
+
+void crypto_exit_compress_ops(struct crypto_tfm *tfm)
+{
+	tfm->__crt_alg->cra_compress.coa_exit(crypto_tfm_ctx(tfm));
+}