/* * 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_FIPSstatic 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);}