cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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proc.c (2550B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * Scatterlist Cryptographic API.
      4 *
      5 * Procfs information.
      6 *
      7 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
      8 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
      9 */
     10
     11#include <linux/atomic.h>
     12#include <linux/init.h>
     13#include <linux/crypto.h>
     14#include <linux/module.h>	/* for module_name() */
     15#include <linux/rwsem.h>
     16#include <linux/proc_fs.h>
     17#include <linux/seq_file.h>
     18#include "internal.h"
     19
     20static void *c_start(struct seq_file *m, loff_t *pos)
     21{
     22	down_read(&crypto_alg_sem);
     23	return seq_list_start(&crypto_alg_list, *pos);
     24}
     25
     26static void *c_next(struct seq_file *m, void *p, loff_t *pos)
     27{
     28	return seq_list_next(p, &crypto_alg_list, pos);
     29}
     30
     31static void c_stop(struct seq_file *m, void *p)
     32{
     33	up_read(&crypto_alg_sem);
     34}
     35
     36static int c_show(struct seq_file *m, void *p)
     37{
     38	struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
     39
     40	seq_printf(m, "name         : %s\n", alg->cra_name);
     41	seq_printf(m, "driver       : %s\n", alg->cra_driver_name);
     42	seq_printf(m, "module       : %s\n", module_name(alg->cra_module));
     43	seq_printf(m, "priority     : %d\n", alg->cra_priority);
     44	seq_printf(m, "refcnt       : %u\n", refcount_read(&alg->cra_refcnt));
     45	seq_printf(m, "selftest     : %s\n",
     46		   (alg->cra_flags & CRYPTO_ALG_TESTED) ?
     47		   "passed" : "unknown");
     48	seq_printf(m, "internal     : %s\n",
     49		   (alg->cra_flags & CRYPTO_ALG_INTERNAL) ?
     50		   "yes" : "no");
     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	}
     62
     63	switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
     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;
     72	case CRYPTO_ALG_TYPE_COMPRESS:
     73		seq_printf(m, "type         : compression\n");
     74		break;
     75	default:
     76		seq_printf(m, "type         : unknown\n");
     77		break;
     78	}
     79
     80out:
     81	seq_putc(m, '\n');
     82	return 0;
     83}
     84
     85static const struct seq_operations crypto_seq_ops = {
     86	.start		= c_start,
     87	.next		= c_next,
     88	.stop		= c_stop,
     89	.show		= c_show
     90};
     91
     92void __init crypto_init_proc(void)
     93{
     94	proc_create_seq("crypto", 0, NULL, &crypto_seq_ops);
     95}
     96
     97void __exit crypto_exit_proc(void)
     98{
     99	remove_proc_entry("crypto", NULL);
    100}