v4.19.13 snapshot.
diff --git a/crypto/proc.c b/crypto/proc.c
new file mode 100644
index 0000000..f4eb613
--- /dev/null
+++ b/crypto/proc.c
@@ -0,0 +1,105 @@
+/*
+ * Scatterlist Cryptographic API.
+ *
+ * Procfs information.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ * Copyright (c) 2005 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/atomic.h>
+#include <linux/init.h>
+#include <linux/crypto.h>
+#include <linux/module.h> /* for module_name() */
+#include <linux/rwsem.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include "internal.h"
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+ down_read(&crypto_alg_sem);
+ return seq_list_start(&crypto_alg_list, *pos);
+}
+
+static void *c_next(struct seq_file *m, void *p, loff_t *pos)
+{
+ return seq_list_next(p, &crypto_alg_list, pos);
+}
+
+static void c_stop(struct seq_file *m, void *p)
+{
+ up_read(&crypto_alg_sem);
+}
+
+static int c_show(struct seq_file *m, void *p)
+{
+ struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
+
+ seq_printf(m, "name : %s\n", alg->cra_name);
+ seq_printf(m, "driver : %s\n", alg->cra_driver_name);
+ seq_printf(m, "module : %s\n", module_name(alg->cra_module));
+ seq_printf(m, "priority : %d\n", alg->cra_priority);
+ seq_printf(m, "refcnt : %u\n", refcount_read(&alg->cra_refcnt));
+ seq_printf(m, "selftest : %s\n",
+ (alg->cra_flags & CRYPTO_ALG_TESTED) ?
+ "passed" : "unknown");
+ seq_printf(m, "internal : %s\n",
+ (alg->cra_flags & CRYPTO_ALG_INTERNAL) ?
+ "yes" : "no");
+
+ if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
+ seq_printf(m, "type : larval\n");
+ seq_printf(m, "flags : 0x%x\n", alg->cra_flags);
+ goto out;
+ }
+
+ if (alg->cra_type && alg->cra_type->show) {
+ alg->cra_type->show(m, alg);
+ goto out;
+ }
+
+ switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {
+ case CRYPTO_ALG_TYPE_CIPHER:
+ seq_printf(m, "type : cipher\n");
+ seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
+ seq_printf(m, "min keysize : %u\n",
+ alg->cra_cipher.cia_min_keysize);
+ seq_printf(m, "max keysize : %u\n",
+ alg->cra_cipher.cia_max_keysize);
+ break;
+ case CRYPTO_ALG_TYPE_COMPRESS:
+ seq_printf(m, "type : compression\n");
+ break;
+ default:
+ seq_printf(m, "type : unknown\n");
+ break;
+ }
+
+out:
+ seq_putc(m, '\n');
+ return 0;
+}
+
+static const struct seq_operations crypto_seq_ops = {
+ .start = c_start,
+ .next = c_next,
+ .stop = c_stop,
+ .show = c_show
+};
+
+void __init crypto_init_proc(void)
+{
+ proc_create_seq("crypto", 0, NULL, &crypto_seq_ops);
+}
+
+void __exit crypto_exit_proc(void)
+{
+ remove_proc_entry("crypto", NULL);
+}