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2874c5fd28
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Scatterlist Cryptographic API.
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*
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* Procfs information.
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*
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* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
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* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
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*/
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#include <linux/atomic.h>
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#include <linux/init.h>
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#include <linux/crypto.h>
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#include <linux/module.h> /* for module_name() */
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#include <linux/rwsem.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include "internal.h"
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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down_read(&crypto_alg_sem);
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return seq_list_start(&crypto_alg_list, *pos);
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}
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static void *c_next(struct seq_file *m, void *p, loff_t *pos)
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{
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return seq_list_next(p, &crypto_alg_list, pos);
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}
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static void c_stop(struct seq_file *m, void *p)
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{
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up_read(&crypto_alg_sem);
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}
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static int c_show(struct seq_file *m, void *p)
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{
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struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
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seq_printf(m, "name : %s\n", alg->cra_name);
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seq_printf(m, "driver : %s\n", alg->cra_driver_name);
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seq_printf(m, "module : %s\n", module_name(alg->cra_module));
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seq_printf(m, "priority : %d\n", alg->cra_priority);
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seq_printf(m, "refcnt : %u\n", refcount_read(&alg->cra_refcnt));
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seq_printf(m, "selftest : %s\n",
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(alg->cra_flags & CRYPTO_ALG_TESTED) ?
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"passed" : "unknown");
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seq_printf(m, "internal : %s\n",
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(alg->cra_flags & CRYPTO_ALG_INTERNAL) ?
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"yes" : "no");
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if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
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seq_printf(m, "type : larval\n");
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seq_printf(m, "flags : 0x%x\n", alg->cra_flags);
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goto out;
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}
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if (alg->cra_type && alg->cra_type->show) {
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alg->cra_type->show(m, alg);
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goto out;
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}
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switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {
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case CRYPTO_ALG_TYPE_CIPHER:
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seq_printf(m, "type : cipher\n");
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seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
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seq_printf(m, "min keysize : %u\n",
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alg->cra_cipher.cia_min_keysize);
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seq_printf(m, "max keysize : %u\n",
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alg->cra_cipher.cia_max_keysize);
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break;
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case CRYPTO_ALG_TYPE_COMPRESS:
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seq_printf(m, "type : compression\n");
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break;
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default:
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seq_printf(m, "type : unknown\n");
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break;
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}
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out:
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seq_putc(m, '\n');
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return 0;
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}
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static const struct seq_operations crypto_seq_ops = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = c_show
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};
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void __init crypto_init_proc(void)
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{
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proc_create_seq("crypto", 0, NULL, &crypto_seq_ops);
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}
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void __exit crypto_exit_proc(void)
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{
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remove_proc_entry("crypto", NULL);
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}
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