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

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Scatterlist Cryptographic API.
 *
 * Procfs information.
 *
 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
 */

#include <linux/atomic.h>
#include <linux/init.h>
#include <linux/crypto.h>
#include <linux/fips.h>
#include <linux/module.h>	/* for module_name() */
#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)
{
	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       : %u\n", refcount_read(&alg->cra_refcnt));
	seq_printf(m, "selftest     : %s\n",
		   (alg->cra_flags & CRYPTO_ALG_TESTED) ?
		   "passed" : "unknown");
	seq_printf(m, "internal     : %s\n",
		   (alg->cra_flags & CRYPTO_ALG_INTERNAL) ?
		   "yes" : "no");
	if (fips_enabled) {
		seq_printf(m, "fips         : %s\n",
			   (alg->cra_flags & CRYPTO_ALG_FIPS_INTERNAL) ?
			   "no" : "yes");
	}

	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) {
	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
};

void __init crypto_init_proc(void)
{
	proc_create_seq("crypto", 0, NULL, &crypto_seq_ops);
}

void __exit crypto_exit_proc(void)
{
	remove_proc_entry("crypto", NULL);
}
Commit	Line	Data
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* Scatterlist Cryptographic API.
	4	*
	5	* Procfs information.
	6	*
	7	* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5cb1454b	8	* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
1da177e4	9	*/
6521f302	10
60063497	11	#include <linux/atomic.h>
1da177e4 LT	12	#include <linux/init.h>
1da177e4 LT	13	#include <linux/crypto.h>
c43cc882	14	#include <linux/fips.h>
4bb33cc8	15	#include <linux/module.h> /* for module_name() */
1da177e4 LT	16	#include <linux/rwsem.h>
	17	#include <linux/proc_fs.h>
	18	#include <linux/seq_file.h>
	19	#include "internal.h"
	20
1da177e4 LT	21	static void c_start(struct seq_file m, loff_t *pos)
1da177e4 LT	22	{
1da177e4	23	down_read(&crypto_alg_sem);
13d31894	24	return seq_list_start(&crypto_alg_list, *pos);
1da177e4 LT	25	}
	26
	27	static void c_next(struct seq_file m, void p, loff_t pos)
	28	{
13d31894	29	return seq_list_next(p, &crypto_alg_list, pos);
1da177e4 LT	30	}
	31
	32	static void c_stop(struct seq_file m, void p)
	33	{
	34	up_read(&crypto_alg_sem);
	35	}
	36
	37	static int c_show(struct seq_file m, void p)
	38	{
13d31894	39	struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
fde2f57c	40
1da177e4	41	seq_printf(m, "name : %s\n", alg->cra_name);
5cb1454b	42	seq_printf(m, "driver : %s\n", alg->cra_driver_name);
1da177e4	43	seq_printf(m, "module : %s\n", module_name(alg->cra_module));
5cb1454b	44	seq_printf(m, "priority : %d\n", alg->cra_priority);
ce8614a3	45	seq_printf(m, "refcnt : %u\n", refcount_read(&alg->cra_refcnt));
73d3864a HX	46	seq_printf(m, "selftest : %s\n",
	47	(alg->cra_flags & CRYPTO_ALG_TESTED) ?
	48	"passed" : "unknown");
b0cda2ba SM	49	seq_printf(m, "internal : %s\n",
	50	(alg->cra_flags & CRYPTO_ALG_INTERNAL) ?
	51	"yes" : "no");
c43cc882 HX	52	if (fips_enabled) {
	53	seq_printf(m, "fips : %s\n",
	54	(alg->cra_flags & CRYPTO_ALG_FIPS_INTERNAL) ?
	55	"no" : "yes");
	56	}
67cd080c HX	57
	58	if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
	59	seq_printf(m, "type : larval\n");
	60	seq_printf(m, "flags : 0x%x\n", alg->cra_flags);
	61	goto out;
	62	}
	63
	64	if (alg->cra_type && alg->cra_type->show) {
	65	alg->cra_type->show(m, alg);
	66	goto out;
	67	}
fde2f57c	68
7f1cfe41	69	switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
1da177e4 LT	70	case CRYPTO_ALG_TYPE_CIPHER:
	71	seq_printf(m, "type : cipher\n");
	72	seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
	73	seq_printf(m, "min keysize : %u\n",
	74	alg->cra_cipher.cia_min_keysize);
	75	seq_printf(m, "max keysize : %u\n",
	76	alg->cra_cipher.cia_max_keysize);
	77	break;
1da177e4 LT	78	case CRYPTO_ALG_TYPE_COMPRESS:
	79	seq_printf(m, "type : compression\n");
	80	break;
	81	default:
67cd080c	82	seq_printf(m, "type : unknown\n");
1da177e4 LT	83	break;
	84	}
	85
67cd080c	86	out:
1da177e4 LT	87	seq_putc(m, '\n');
	88	return 0;
	89	}
	90
48c8949e	91	static const struct seq_operations crypto_seq_ops = {
1da177e4 LT	92	.start = c_start,
	93	.next = c_next,
	94	.stop = c_stop,
	95	.show = c_show
	96	};
	97
1da177e4 LT	98	void __init crypto_init_proc(void)
1da177e4 LT	99	{
fddda2b7	100	proc_create_seq("crypto", 0, NULL, &crypto_seq_ops);
1da177e4	101	}
cce9e06d HX	102
	103	void __exit crypto_exit_proc(void)
	104	{
	105	remove_proc_entry("crypto", NULL);
	106	}