// 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)	__acquires_shared(&crypto_alg_sem){	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)	__must_hold_shared(&crypto_alg_sem){	return seq_list_next(p, &crypto_alg_list, pos);} static void c_stop(struct seq_file *m, void *p)	__releases_shared(&crypto_alg_sem){	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",		   str_yes_no(alg->cra_flags & CRYPTO_ALG_INTERNAL));	if (fips_enabled)		seq_printf(m, "fips         : %s\n",			str_no_yes(alg->cra_flags & CRYPTO_ALG_FIPS_INTERNAL)); 	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;	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);}