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authorHerbert Xu <herbert@gondor.apana.org.au>2008-07-31 17:08:25 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2008-08-29 15:49:55 +1000
commitda7f033ddc9fdebb3223b0bf88a2a2ab5b797608 (patch)
tree619aa89f8787abf07a66e3925bfc72c44a067b04 /crypto/algboss.c
parent01b323245e4f6d4a22ffd73754f145f45c85988c (diff)
downloadlinux-linaro-android-da7f033ddc9fdebb3223b0bf88a2a2ab5b797608.tar.gz
crypto: cryptomgr - Add test infrastructure
This patch moves the newly created alg_test infrastructure into cryptomgr. This shall allow us to use it for testing at algorithm registrations. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/algboss.c')
-rw-r--r--crypto/algboss.c238
1 files changed, 238 insertions, 0 deletions
diff --git a/crypto/algboss.c b/crypto/algboss.c
new file mode 100644
index 00000000000..2662ac01484
--- /dev/null
+++ b/crypto/algboss.c
@@ -0,0 +1,238 @@
+/*
+ * Create default crypto algorithm instances.
+ *
+ * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.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/crypto.h>
+#include <linux/ctype.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kthread.h>
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/rtnetlink.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+
+#include "internal.h"
+
+struct cryptomgr_param {
+ struct rtattr *tb[CRYPTO_MAX_ATTRS + 2];
+
+ struct {
+ struct rtattr attr;
+ struct crypto_attr_type data;
+ } type;
+
+ union {
+ struct rtattr attr;
+ struct {
+ struct rtattr attr;
+ struct crypto_attr_alg data;
+ } alg;
+ struct {
+ struct rtattr attr;
+ struct crypto_attr_u32 data;
+ } nu32;
+ } attrs[CRYPTO_MAX_ATTRS];
+
+ char larval[CRYPTO_MAX_ALG_NAME];
+ char template[CRYPTO_MAX_ALG_NAME];
+};
+
+static int cryptomgr_probe(void *data)
+{
+ struct cryptomgr_param *param = data;
+ struct crypto_template *tmpl;
+ struct crypto_instance *inst;
+ int err;
+
+ tmpl = crypto_lookup_template(param->template);
+ if (!tmpl)
+ goto err;
+
+ do {
+ inst = tmpl->alloc(param->tb);
+ if (IS_ERR(inst))
+ err = PTR_ERR(inst);
+ else if ((err = crypto_register_instance(tmpl, inst)))
+ tmpl->free(inst);
+ } while (err == -EAGAIN && !signal_pending(current));
+
+ crypto_tmpl_put(tmpl);
+
+ if (err)
+ goto err;
+
+out:
+ kfree(param);
+ module_put_and_exit(0);
+
+err:
+ crypto_larval_error(param->larval, param->type.data.type,
+ param->type.data.mask);
+ goto out;
+}
+
+static int cryptomgr_schedule_probe(struct crypto_larval *larval)
+{
+ struct task_struct *thread;
+ struct cryptomgr_param *param;
+ const char *name = larval->alg.cra_name;
+ const char *p;
+ unsigned int len;
+ int i;
+
+ if (!try_module_get(THIS_MODULE))
+ goto err;
+
+ param = kzalloc(sizeof(*param), GFP_KERNEL);
+ if (!param)
+ goto err_put_module;
+
+ for (p = name; isalnum(*p) || *p == '-' || *p == '_'; p++)
+ ;
+
+ len = p - name;
+ if (!len || *p != '(')
+ goto err_free_param;
+
+ memcpy(param->template, name, len);
+
+ i = 0;
+ for (;;) {
+ int notnum = 0;
+
+ name = ++p;
+ len = 0;
+
+ for (; isalnum(*p) || *p == '-' || *p == '_'; p++)
+ notnum |= !isdigit(*p);
+
+ if (*p == '(') {
+ int recursion = 0;
+
+ for (;;) {
+ if (!*++p)
+ goto err_free_param;
+ if (*p == '(')
+ recursion++;
+ else if (*p == ')' && !recursion--)
+ break;
+ }
+
+ notnum = 1;
+ p++;
+ }
+
+ len = p - name;
+ if (!len)
+ goto err_free_param;
+
+ if (notnum) {
+ param->attrs[i].alg.attr.rta_len =
+ sizeof(param->attrs[i].alg);
+ param->attrs[i].alg.attr.rta_type = CRYPTOA_ALG;
+ memcpy(param->attrs[i].alg.data.name, name, len);
+ } else {
+ param->attrs[i].nu32.attr.rta_len =
+ sizeof(param->attrs[i].nu32);
+ param->attrs[i].nu32.attr.rta_type = CRYPTOA_U32;
+ param->attrs[i].nu32.data.num =
+ simple_strtol(name, NULL, 0);
+ }
+
+ param->tb[i + 1] = &param->attrs[i].attr;
+ i++;
+
+ if (i >= CRYPTO_MAX_ATTRS)
+ goto err_free_param;
+
+ if (*p == ')')
+ break;
+
+ if (*p != ',')
+ goto err_free_param;
+ }
+
+ if (!i)
+ goto err_free_param;
+
+ param->tb[i + 1] = NULL;
+
+ param->type.attr.rta_len = sizeof(param->type);
+ param->type.attr.rta_type = CRYPTOA_TYPE;
+ param->type.data.type = larval->alg.cra_flags;
+ param->type.data.mask = larval->mask;
+ param->tb[0] = &param->type.attr;
+
+ memcpy(param->larval, larval->alg.cra_name, CRYPTO_MAX_ALG_NAME);
+
+ thread = kthread_run(cryptomgr_probe, param, "cryptomgr");
+ if (IS_ERR(thread))
+ goto err_free_param;
+
+ return NOTIFY_STOP;
+
+err_free_param:
+ kfree(param);
+err_put_module:
+ module_put(THIS_MODULE);
+err:
+ return NOTIFY_OK;
+}
+
+static int cryptomgr_notify(struct notifier_block *this, unsigned long msg,
+ void *data)
+{
+ switch (msg) {
+ case CRYPTO_MSG_ALG_REQUEST:
+ return cryptomgr_schedule_probe(data);
+ }
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block cryptomgr_notifier = {
+ .notifier_call = cryptomgr_notify,
+};
+
+static int __init cryptomgr_init(void)
+{
+ int err;
+
+ err = testmgr_init();
+ if (err)
+ return err;
+
+ err = crypto_register_notifier(&cryptomgr_notifier);
+ if (err)
+ goto free_testmgr;
+
+ return 0;
+
+free_testmgr:
+ testmgr_exit();
+ return err;
+}
+
+static void __exit cryptomgr_exit(void)
+{
+ int err = crypto_unregister_notifier(&cryptomgr_notifier);
+ BUG_ON(err);
+
+ testmgr_exit();
+}
+
+subsys_initcall(cryptomgr_init);
+module_exit(cryptomgr_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Crypto Algorithm Manager");