[linux-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/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 (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>
4bb33cc8	14	#include <linux/module.h> /* for module_name() */
1da177e4 LT	15	#include <linux/rwsem.h>
	16	#include <linux/proc_fs.h>
	17	#include <linux/seq_file.h>
	18	#include "internal.h"
	19
1da177e4 LT	20	static void c_start(struct seq_file m, loff_t *pos)
1da177e4 LT	21	{
1da177e4	22	down_read(&crypto_alg_sem);
13d31894	23	return seq_list_start(&crypto_alg_list, *pos);
1da177e4 LT	24	}
	25
	26	static void c_next(struct seq_file m, void p, loff_t pos)
	27	{
13d31894	28	return seq_list_next(p, &crypto_alg_list, pos);
1da177e4 LT	29	}
	30
	31	static void c_stop(struct seq_file m, void p)
	32	{
	33	up_read(&crypto_alg_sem);
	34	}
	35
	36	static int c_show(struct seq_file m, void p)
	37	{
13d31894	38	struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
fde2f57c	39
1da177e4	40	seq_printf(m, "name : %s\n", alg->cra_name);
5cb1454b	41	seq_printf(m, "driver : %s\n", alg->cra_driver_name);
1da177e4	42	seq_printf(m, "module : %s\n", module_name(alg->cra_module));
5cb1454b	43	seq_printf(m, "priority : %d\n", alg->cra_priority);
ce8614a3	44	seq_printf(m, "refcnt : %u\n", refcount_read(&alg->cra_refcnt));
73d3864a HX	45	seq_printf(m, "selftest : %s\n",
	46	(alg->cra_flags & CRYPTO_ALG_TESTED) ?
	47	"passed" : "unknown");
b0cda2ba SM	48	seq_printf(m, "internal : %s\n",
	49	(alg->cra_flags & CRYPTO_ALG_INTERNAL) ?
	50	"yes" : "no");
67cd080c HX	51
	52	if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
	53	seq_printf(m, "type : larval\n");
	54	seq_printf(m, "flags : 0x%x\n", alg->cra_flags);
	55	goto out;
	56	}
	57
	58	if (alg->cra_type && alg->cra_type->show) {
	59	alg->cra_type->show(m, alg);
	60	goto out;
	61	}
fde2f57c	62
7f1cfe41	63	switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
1da177e4 LT	64	case CRYPTO_ALG_TYPE_CIPHER:
	65	seq_printf(m, "type : cipher\n");
	66	seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
	67	seq_printf(m, "min keysize : %u\n",
	68	alg->cra_cipher.cia_min_keysize);
	69	seq_printf(m, "max keysize : %u\n",
	70	alg->cra_cipher.cia_max_keysize);
	71	break;
1da177e4 LT	72	case CRYPTO_ALG_TYPE_COMPRESS:
	73	seq_printf(m, "type : compression\n");
	74	break;
	75	default:
67cd080c	76	seq_printf(m, "type : unknown\n");
1da177e4 LT	77	break;
	78	}
	79
67cd080c	80	out:
1da177e4 LT	81	seq_putc(m, '\n');
	82	return 0;
	83	}
	84
48c8949e	85	static const struct seq_operations crypto_seq_ops = {
1da177e4 LT	86	.start = c_start,
	87	.next = c_next,
	88	.stop = c_stop,
	89	.show = c_show
	90	};
	91
1da177e4 LT	92	void __init crypto_init_proc(void)
1da177e4 LT	93	{
fddda2b7	94	proc_create_seq("crypto", 0, NULL, &crypto_seq_ops);
1da177e4	95	}
cce9e06d HX	96
	97	void __exit crypto_exit_proc(void)
	98	{
	99	remove_proc_entry("crypto", NULL);
	100	}