[linux-2.6-block.git] / crypto / proc.c

/*
 * 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;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Scatterlist Cryptographic API.
	3	*
	4	* Procfs information.
	5	*
	6	* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5cb1454b	7	* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
1da177e4 LT	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the Free
	11	* Software Foundation; either version 2 of the License, or (at your option)
	12	* any later version.
	13	*
	14	*/
	15	#include <linux/init.h>
	16	#include <linux/crypto.h>
	17	#include <linux/rwsem.h>
	18	#include <linux/proc_fs.h>
	19	#include <linux/seq_file.h>
	20	#include "internal.h"
	21
1da177e4 LT	22	static void c_start(struct seq_file m, loff_t *pos)
	23	{
	24	struct list_head *v;
	25	loff_t n = *pos;
	26
	27	down_read(&crypto_alg_sem);
	28	list_for_each(v, &crypto_alg_list)
	29	if (!n--)
	30	return list_entry(v, struct crypto_alg, cra_list);
	31	return NULL;
	32	}
	33
	34	static void c_next(struct seq_file m, void p, loff_t pos)
	35	{
	36	struct list_head *v = p;
	37
	38	(*pos)++;
	39	v = v->next;
	40	return (v == &crypto_alg_list) ?
	41	NULL : list_entry(v, struct crypto_alg, cra_list);
	42	}
	43
	44	static void c_stop(struct seq_file m, void p)
	45	{
	46	up_read(&crypto_alg_sem);
	47	}
	48
	49	static int c_show(struct seq_file m, void p)
	50	{
	51	struct crypto_alg alg = (struct crypto_alg )p;
	52
	53	seq_printf(m, "name : %s\n", alg->cra_name);
5cb1454b	54	seq_printf(m, "driver : %s\n", alg->cra_driver_name);
1da177e4	55	seq_printf(m, "module : %s\n", module_name(alg->cra_module));
5cb1454b	56	seq_printf(m, "priority : %d\n", alg->cra_priority);
1da177e4 LT	57
	58	switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
	59	case CRYPTO_ALG_TYPE_CIPHER:
	60	seq_printf(m, "type : cipher\n");
	61	seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
	62	seq_printf(m, "min keysize : %u\n",
	63	alg->cra_cipher.cia_min_keysize);
	64	seq_printf(m, "max keysize : %u\n",
	65	alg->cra_cipher.cia_max_keysize);
	66	break;
	67
	68	case CRYPTO_ALG_TYPE_DIGEST:
	69	seq_printf(m, "type : digest\n");
	70	seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
	71	seq_printf(m, "digestsize : %u\n",
	72	alg->cra_digest.dia_digestsize);
	73	break;
	74	case CRYPTO_ALG_TYPE_COMPRESS:
	75	seq_printf(m, "type : compression\n");
	76	break;
	77	default:
	78	seq_printf(m, "type : unknown\n");
	79	break;
	80	}
	81
	82	seq_putc(m, '\n');
	83	return 0;
	84	}
	85
	86	static struct seq_operations crypto_seq_ops = {
	87	.start = c_start,
	88	.next = c_next,
	89	.stop = c_stop,
	90	.show = c_show
	91	};
	92
	93	static int crypto_info_open(struct inode inode, struct file file)
	94	{
	95	return seq_open(file, &crypto_seq_ops);
	96	}
	97
	98	static struct file_operations proc_crypto_ops = {
	99	.open = crypto_info_open,
	100	.read = seq_read,
	101	.llseek = seq_lseek,
	102	.release = seq_release
	103	};
	104
	105	void __init crypto_init_proc(void)
	106	{
	107	struct proc_dir_entry *proc;
	108
	109	proc = create_proc_entry("crypto", 0, NULL);
	110	if (proc)
	111	proc->proc_fops = &proc_crypto_ops;
	112	}