zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/crypto/pcompress.c b/ap/os/linux/linux-3.4.x/crypto/pcompress.c
new file mode 100644
index 0000000..6f2a361
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/crypto/pcompress.c
@@ -0,0 +1,120 @@
+/*
+ * Cryptographic API.
+ *
+ * Partial (de)compression operations.
+ *
+ * Copyright 2008 Sony Corporation
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/crypto.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/seq_file.h>
+#include <linux/string.h>
+#include <linux/cryptouser.h>
+#include <net/netlink.h>
+
+#include <crypto/compress.h>
+#include <crypto/internal/compress.h>
+
+#include "internal.h"
+
+
+static int crypto_pcomp_init(struct crypto_tfm *tfm, u32 type, u32 mask)
+{
+ return 0;
+}
+
+static unsigned int crypto_pcomp_extsize(struct crypto_alg *alg)
+{
+ return alg->cra_ctxsize;
+}
+
+static int crypto_pcomp_init_tfm(struct crypto_tfm *tfm)
+{
+ return 0;
+}
+
+#ifdef CONFIG_NET
+static int crypto_pcomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ struct crypto_report_comp rpcomp;
+
+ strncpy(rpcomp.type, "pcomp", sizeof(rpcomp.type));
+ NLA_PUT(skb, CRYPTOCFGA_REPORT_COMPRESS,
+ sizeof(struct crypto_report_comp), &rpcomp);
+
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+#else
+static int crypto_pcomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ return -ENOSYS;
+}
+#endif
+
+static void crypto_pcomp_show(struct seq_file *m, struct crypto_alg *alg)
+ __attribute__ ((unused));
+static void crypto_pcomp_show(struct seq_file *m, struct crypto_alg *alg)
+{
+ seq_printf(m, "type : pcomp\n");
+}
+
+static const struct crypto_type crypto_pcomp_type = {
+ .extsize = crypto_pcomp_extsize,
+ .init = crypto_pcomp_init,
+ .init_tfm = crypto_pcomp_init_tfm,
+#ifdef CONFIG_PROC_FS
+ .show = crypto_pcomp_show,
+#endif
+ .report = crypto_pcomp_report,
+ .maskclear = ~CRYPTO_ALG_TYPE_MASK,
+ .maskset = CRYPTO_ALG_TYPE_MASK,
+ .type = CRYPTO_ALG_TYPE_PCOMPRESS,
+ .tfmsize = offsetof(struct crypto_pcomp, base),
+};
+
+struct crypto_pcomp *crypto_alloc_pcomp(const char *alg_name, u32 type,
+ u32 mask)
+{
+ return crypto_alloc_tfm(alg_name, &crypto_pcomp_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_alloc_pcomp);
+
+int crypto_register_pcomp(struct pcomp_alg *alg)
+{
+ struct crypto_alg *base = &alg->base;
+
+ base->cra_type = &crypto_pcomp_type;
+ base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+ base->cra_flags |= CRYPTO_ALG_TYPE_PCOMPRESS;
+
+ return crypto_register_alg(base);
+}
+EXPORT_SYMBOL_GPL(crypto_register_pcomp);
+
+int crypto_unregister_pcomp(struct pcomp_alg *alg)
+{
+ return crypto_unregister_alg(&alg->base);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_pcomp);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Partial (de)compression type");
+MODULE_AUTHOR("Sony Corporation");