/* * 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/init.h>#include <linux/crypto.h>#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){	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, "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);		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;}