[net-next-2.6.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 <asm/atomic.h>
#include <linux/init.h>
#include <linux/crypto.h>
#include <linux/rwsem.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/sysctl.h>
#include "internal.h"

#ifdef CONFIG_CRYPTO_FIPS
static struct ctl_table crypto_sysctl_table[] = {
	{
		.procname       = "fips_enabled",
		.data           = &fips_enabled,
		.maxlen         = sizeof(int),
		.mode           = 0444,
		.proc_handler   = proc_dointvec
	},
	{}
};

static struct ctl_table crypto_dir_table[] = {
	{
		.procname       = "crypto",
		.mode           = 0555,
		.child          = crypto_sysctl_table
	},
	{}
};

static struct ctl_table_header *crypto_sysctls;

static void crypto_proc_fips_init(void)
{
	crypto_sysctls = register_sysctl_table(crypto_dir_table);
}

static void crypto_proc_fips_exit(void)
{
	if (crypto_sysctls)
		unregister_sysctl_table(crypto_sysctls);
}
#else
#define crypto_proc_fips_init()
#define crypto_proc_fips_exit()
#endif

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       : %d\n", atomic_read(&alg->cra_refcnt));
	seq_printf(m, "selftest     : %s\n",
		   (alg->cra_flags & CRYPTO_ALG_TESTED) ?
		   "passed" : "unknown");

	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
};

static int crypto_info_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &crypto_seq_ops);
}
        
static const 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)
{
	proc_create("crypto", 0, NULL, &proc_crypto_ops);
	crypto_proc_fips_init();
}

void __exit crypto_exit_proc(void)
{
	crypto_proc_fips_exit();
	remove_proc_entry("crypto", NULL);
}
Commit	Line	Data
	1	/*
	2	* Scatterlist Cryptographic API.
	3	*
	4	* Procfs information.
	5	*
	6	* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
	7	* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
	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
	16	#include <asm/atomic.h>
	17	#include <linux/init.h>
	18	#include <linux/crypto.h>
	19	#include <linux/rwsem.h>
	20	#include <linux/proc_fs.h>
	21	#include <linux/seq_file.h>
	22	#include <linux/sysctl.h>
	23	#include "internal.h"
	24
	25	#ifdef CONFIG_CRYPTO_FIPS
	26	static struct ctl_table crypto_sysctl_table[] = {
	27	{
	28	.procname = "fips_enabled",
	29	.data = &fips_enabled,
	30	.maxlen = sizeof(int),
	31	.mode = 0444,
	32	.proc_handler = proc_dointvec
	33	},
	34	{}
	35	};
	36
	37	static struct ctl_table crypto_dir_table[] = {
	38	{
	39	.procname = "crypto",
	40	.mode = 0555,
	41	.child = crypto_sysctl_table
	42	},
	43	{}
	44	};
	45
	46	static struct ctl_table_header *crypto_sysctls;
	47
	48	static void crypto_proc_fips_init(void)
	49	{
	50	crypto_sysctls = register_sysctl_table(crypto_dir_table);
	51	}
	52
	53	static void crypto_proc_fips_exit(void)
	54	{
	55	if (crypto_sysctls)
	56	unregister_sysctl_table(crypto_sysctls);
	57	}
	58	#else
	59	#define crypto_proc_fips_init()
	60	#define crypto_proc_fips_exit()
	61	#endif
	62
	63	static void c_start(struct seq_file m, loff_t *pos)
	64	{
	65	down_read(&crypto_alg_sem);
	66	return seq_list_start(&crypto_alg_list, *pos);
	67	}
	68
	69	static void c_next(struct seq_file m, void p, loff_t pos)
	70	{
	71	return seq_list_next(p, &crypto_alg_list, pos);
	72	}
	73
	74	static void c_stop(struct seq_file m, void p)
	75	{
	76	up_read(&crypto_alg_sem);
	77	}
	78
	79	static int c_show(struct seq_file m, void p)
	80	{
	81	struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
	82
	83	seq_printf(m, "name : %s\n", alg->cra_name);
	84	seq_printf(m, "driver : %s\n", alg->cra_driver_name);
	85	seq_printf(m, "module : %s\n", module_name(alg->cra_module));
	86	seq_printf(m, "priority : %d\n", alg->cra_priority);
	87	seq_printf(m, "refcnt : %d\n", atomic_read(&alg->cra_refcnt));
	88	seq_printf(m, "selftest : %s\n",
	89	(alg->cra_flags & CRYPTO_ALG_TESTED) ?
	90	"passed" : "unknown");
	91
	92	if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
	93	seq_printf(m, "type : larval\n");
	94	seq_printf(m, "flags : 0x%x\n", alg->cra_flags);
	95	goto out;
	96	}
	97
	98	if (alg->cra_type && alg->cra_type->show) {
	99	alg->cra_type->show(m, alg);
	100	goto out;
	101	}
	102
	103	switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK \| CRYPTO_ALG_LARVAL)) {
	104	case CRYPTO_ALG_TYPE_CIPHER:
	105	seq_printf(m, "type : cipher\n");
	106	seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
	107	seq_printf(m, "min keysize : %u\n",
	108	alg->cra_cipher.cia_min_keysize);
	109	seq_printf(m, "max keysize : %u\n",
	110	alg->cra_cipher.cia_max_keysize);
	111	break;
	112	case CRYPTO_ALG_TYPE_COMPRESS:
	113	seq_printf(m, "type : compression\n");
	114	break;
	115	default:
	116	seq_printf(m, "type : unknown\n");
	117	break;
	118	}
	119
	120	out:
	121	seq_putc(m, '\n');
	122	return 0;
	123	}
	124
	125	static const struct seq_operations crypto_seq_ops = {
	126	.start = c_start,
	127	.next = c_next,
	128	.stop = c_stop,
	129	.show = c_show
	130	};
	131
	132	static int crypto_info_open(struct inode inode, struct file file)
	133	{
	134	return seq_open(file, &crypto_seq_ops);
	135	}
	136
	137	static const struct file_operations proc_crypto_ops = {
	138	.open = crypto_info_open,
	139	.read = seq_read,
	140	.llseek = seq_lseek,
	141	.release = seq_release
	142	};
	143
	144	void __init crypto_init_proc(void)
	145	{
	146	proc_create("crypto", 0, NULL, &proc_crypto_ops);
	147	crypto_proc_fips_init();
	148	}
	149
	150	void __exit crypto_exit_proc(void)
	151	{
	152	crypto_proc_fips_exit();
	153	remove_proc_entry("crypto", NULL);
	154	}