From: Gabor Juhos Date: Fri, 2 Mar 2012 23:08:56 +0000 (+0000) Subject: linux/3.2: add XZ decompressor support to crypto X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=b8bc1eca45289b8a529fcb4ab559505c101bc877;p=librecmc%2Flibrecmc.git linux/3.2: add XZ decompressor support to crypto SVN-Revision: 30792 --- diff --git a/target/linux/generic/config-3.2 b/target/linux/generic/config-3.2 index a44ebe7d4f..c4be769cd1 100644 --- a/target/linux/generic/config-3.2 +++ b/target/linux/generic/config-3.2 @@ -487,6 +487,7 @@ CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y # CONFIG_CRYPTO_WP512 is not set # CONFIG_CRYPTO_XCBC is not set # CONFIG_CRYPTO_XTS is not set +# CONFIG_CRYPTO_XZ is not set # CONFIG_CRYPTO_ZLIB is not set # CONFIG_CRYSTALHD is not set # CONFIG_CS5535_MFGPT is not set diff --git a/target/linux/generic/patches-3.2/540-crypto-xz-decompression-support.patch b/target/linux/generic/patches-3.2/540-crypto-xz-decompression-support.patch new file mode 100644 index 0000000000..e6e0a730a4 --- /dev/null +++ b/target/linux/generic/patches-3.2/540-crypto-xz-decompression-support.patch @@ -0,0 +1,146 @@ +--- a/crypto/Kconfig ++++ b/crypto/Kconfig +@@ -886,6 +886,13 @@ config CRYPTO_LZO + help + This is the LZO 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 +@@ -82,6 +82,7 @@ obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += mich + obj-$(CONFIG_CRYPTO_CRC32C) += crc32c.o + obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o authencesn.o + obj-$(CONFIG_CRYPTO_LZO) += lzo.o ++obj-$(CONFIG_CRYPTO_XZ) += xz.o + obj-$(CONFIG_CRYPTO_RNG2) += rng.o + obj-$(CONFIG_CRYPTO_RNG2) += krng.o + obj-$(CONFIG_CRYPTO_ANSI_CPRNG) += ansi_cprng.o +--- /dev/null ++++ b/crypto/xz.c +@@ -0,0 +1,117 @@ ++/* ++ * Cryptographic API. ++ * ++ * XZ decompression support. ++ * ++ * Copyright (c) 2012 Gabor Juhos ++ * ++ * 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 ++#include ++#include ++#include ++#include ++#include ++#include ++ ++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 "); diff --git a/target/linux/generic/patches-3.2/940-ocf_kbuild_integration.patch b/target/linux/generic/patches-3.2/940-ocf_kbuild_integration.patch index f22bd4ccd4..8108e3e486 100644 --- a/target/linux/generic/patches-3.2/940-ocf_kbuild_integration.patch +++ b/target/linux/generic/patches-3.2/940-ocf_kbuild_integration.patch @@ -1,6 +1,6 @@ --- a/crypto/Kconfig +++ b/crypto/Kconfig -@@ -923,3 +923,6 @@ config CRYPTO_USER_API_SKCIPHER +@@ -930,3 +930,6 @@ config CRYPTO_USER_API_SKCIPHER source "drivers/crypto/Kconfig" endif # if CRYPTO @@ -9,7 +9,7 @@ + --- a/crypto/Makefile +++ b/crypto/Makefile -@@ -91,6 +91,8 @@ obj-$(CONFIG_CRYPTO_USER_API) += af_alg. +@@ -92,6 +92,8 @@ obj-$(CONFIG_CRYPTO_USER_API) += af_alg. obj-$(CONFIG_CRYPTO_USER_API_HASH) += algif_hash.o obj-$(CONFIG_CRYPTO_USER_API_SKCIPHER) += algif_skcipher.o