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-rw-r--r--crypto/proc.c112
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;
+}