aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/generic/patches-3.12/540-crypto-xz-decompression-support.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/generic/patches-3.12/540-crypto-xz-decompression-support.patch')
-rw-r--r--target/linux/generic/patches-3.12/540-crypto-xz-decompression-support.patch146
1 files changed, 0 insertions, 146 deletions
diff --git a/target/linux/generic/patches-3.12/540-crypto-xz-decompression-support.patch b/target/linux/generic/patches-3.12/540-crypto-xz-decompression-support.patch
deleted file mode 100644
index 6e26648e3b..0000000000
--- a/target/linux/generic/patches-3.12/540-crypto-xz-decompression-support.patch
+++ /dev/null
@@ -1,146 +0,0 @@
---- a/crypto/Kconfig
-+++ b/crypto/Kconfig
-@@ -1352,6 +1352,13 @@ config CRYPTO_LZ4HC
- help
- This is the LZ4 high compression mode algorithm.
-
-+config CRYPTO_XZ
-+ tristate "XZ compression algorithm"
-+ select CRYPTO_ALGAPI
-+ select XZ_DEC
-+ help
-+ This is the XZ algorithm. Only decompression is supported for now.
-+
- comment "Random Number Generation"
-
- config CRYPTO_ANSI_CPRNG
---- a/crypto/Makefile
-+++ b/crypto/Makefile
-@@ -88,6 +88,7 @@ obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.
- obj-$(CONFIG_CRYPTO_LZO) += lzo.o
- obj-$(CONFIG_CRYPTO_LZ4) += lz4.o
- obj-$(CONFIG_CRYPTO_LZ4HC) += lz4hc.o
-+obj-$(CONFIG_CRYPTO_XZ) += xz.o
- obj-$(CONFIG_CRYPTO_842) += 842.o
- obj-$(CONFIG_CRYPTO_RNG2) += rng.o
- obj-$(CONFIG_CRYPTO_RNG2) += krng.o
---- /dev/null
-+++ b/crypto/xz.c
-@@ -0,0 +1,117 @@
-+/*
-+ * Cryptographic API.
-+ *
-+ * XZ decompression support.
-+ *
-+ * Copyright (c) 2012 Gabor Juhos <juhosg@openwrt.org>
-+ *
-+ * This program is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License version 2 as published by
-+ * the Free Software Foundation.
-+ *
-+ */
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/crypto.h>
-+#include <linux/xz.h>
-+#include <linux/interrupt.h>
-+#include <linux/mm.h>
-+#include <linux/net.h>
-+
-+struct xz_comp_ctx {
-+ struct xz_dec *decomp_state;
-+ struct xz_buf decomp_buf;
-+};
-+
-+static int crypto_xz_decomp_init(struct xz_comp_ctx *ctx)
-+{
-+ ctx->decomp_state = xz_dec_init(XZ_SINGLE, 0);
-+ if (!ctx->decomp_state)
-+ return -ENOMEM;
-+
-+ return 0;
-+}
-+
-+static void crypto_xz_decomp_exit(struct xz_comp_ctx *ctx)
-+{
-+ xz_dec_end(ctx->decomp_state);
-+}
-+
-+static int crypto_xz_init(struct crypto_tfm *tfm)
-+{
-+ struct xz_comp_ctx *ctx = crypto_tfm_ctx(tfm);
-+
-+ return crypto_xz_decomp_init(ctx);
-+}
-+
-+static void crypto_xz_exit(struct crypto_tfm *tfm)
-+{
-+ struct xz_comp_ctx *ctx = crypto_tfm_ctx(tfm);
-+
-+ crypto_xz_decomp_exit(ctx);
-+}
-+
-+static int crypto_xz_compress(struct crypto_tfm *tfm, const u8 *src,
-+ unsigned int slen, u8 *dst, unsigned int *dlen)
-+{
-+ return -EOPNOTSUPP;
-+}
-+
-+static int crypto_xz_decompress(struct crypto_tfm *tfm, const u8 *src,
-+ unsigned int slen, u8 *dst, unsigned int *dlen)
-+{
-+ struct xz_comp_ctx *dctx = crypto_tfm_ctx(tfm);
-+ struct xz_buf *xz_buf = &dctx->decomp_buf;
-+ int ret;
-+
-+ memset(xz_buf, '\0', sizeof(struct xz_buf));
-+
-+ xz_buf->in = (u8 *) src;
-+ xz_buf->in_pos = 0;
-+ xz_buf->in_size = slen;
-+ xz_buf->out = (u8 *) dst;
-+ xz_buf->out_pos = 0;
-+ xz_buf->out_size = *dlen;
-+
-+ ret = xz_dec_run(dctx->decomp_state, xz_buf);
-+ if (ret != XZ_STREAM_END) {
-+ ret = -EINVAL;
-+ goto out;
-+ }
-+
-+ *dlen = xz_buf->out_pos;
-+ ret = 0;
-+
-+out:
-+ return ret;
-+}
-+
-+static struct crypto_alg crypto_xz_alg = {
-+ .cra_name = "xz",
-+ .cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
-+ .cra_ctxsize = sizeof(struct xz_comp_ctx),
-+ .cra_module = THIS_MODULE,
-+ .cra_list = LIST_HEAD_INIT(crypto_xz_alg.cra_list),
-+ .cra_init = crypto_xz_init,
-+ .cra_exit = crypto_xz_exit,
-+ .cra_u = { .compress = {
-+ .coa_compress = crypto_xz_compress,
-+ .coa_decompress = crypto_xz_decompress } }
-+};
-+
-+static int __init crypto_xz_mod_init(void)
-+{
-+ return crypto_register_alg(&crypto_xz_alg);
-+}
-+
-+static void __exit crypto_xz_mod_exit(void)
-+{
-+ crypto_unregister_alg(&crypto_xz_alg);
-+}
-+
-+module_init(crypto_xz_mod_init);
-+module_exit(crypto_xz_mod_exit);
-+
-+MODULE_LICENSE("GPL v2");
-+MODULE_DESCRIPTION("Crypto XZ decompression support");
-+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");