1 files changed, 112 insertions, 0 deletions

diff --git a/crypto/proc.c b/crypto/proc.c
new file mode 100644
index 000000000000..630ba91c08f1
--- /dev/null
+++ b/crypto/proc.c
@@ -0,0 +1,112 @@
+/*
+ * Scatterlist Cryptographic API.
+ *
+ * Procfs information.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.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/init.h>
+#include <linux/crypto.h>
+#include <linux/rwsem.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include "internal.h"
+
+extern struct list_head crypto_alg_list;
+extern struct rw_semaphore crypto_alg_sem;
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+        struct list_head *v;
+        loff_t n = *pos;
+
+        down_read(&crypto_alg_sem);
+        list_for_each(v, &crypto_alg_list)
+                if (!n--)
+                        return list_entry(v, struct crypto_alg, cra_list);
+        return NULL;
+}
+
+static void *c_next(struct seq_file *m, void *p, loff_t *pos)
+{
+        struct list_head *v = p;
+        
+        (*pos)++;
+        v = v->next;
+        return (v == &crypto_alg_list) ?
+                NULL : list_entry(v, struct crypto_alg, cra_list);
+}
+
+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 = (struct crypto_alg *)p;
+        
+        seq_printf(m, "name         : %s\n", alg->cra_name);
+        seq_printf(m, "module       : %s\n", module_name(alg->cra_module));
+        
+        switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
+        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_DIGEST:
+                seq_printf(m, "type         : digest\n");
+                seq_printf(m, "blocksize    : %u\n", alg->cra_blocksize);
+                seq_printf(m, "digestsize   : %u\n",
+                           alg->cra_digest.dia_digestsize);
+                break;
+        case CRYPTO_ALG_TYPE_COMPRESS:
+                seq_printf(m, "type         : compression\n");
+                break;
+        default:
+                seq_printf(m, "type         : unknown\n");
+                break;
+        }
+
+        seq_putc(m, '\n');
+        return 0;
+}
+
+static struct seq_operations crypto_seq_ops = {
+        .start          = c_start,
+        .next           = c_next,
+        .stop           = c_stop,
+        .show           = c_show
+};
+
+static int crypto_info_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &crypto_seq_ops);
+}
+        
+static struct file_operations proc_crypto_ops = {
+        .open           = crypto_info_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release
+};
+
+void __init crypto_init_proc(void)
+{
+        struct proc_dir_entry *proc;
+        
+        proc = create_proc_entry("crypto", 0, NULL);
+        if (proc)
+                proc->proc_fops = &proc_crypto_ops;
+}