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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/fips.h>
15#include <linux/module.h> /* for module_name() */
16#include <linux/rwsem.h>
17#include <linux/proc_fs.h>
18#include <linux/seq_file.h>
19#include "internal.h"
20
21static void *c_start(struct seq_file *m, loff_t *pos)
22{
23 down_read(&crypto_alg_sem);
24 return seq_list_start(&crypto_alg_list, *pos);
25}
26
27static void *c_next(struct seq_file *m, void *p, loff_t *pos)
28{
29 return seq_list_next(p, &crypto_alg_list, pos);
30}
31
32static void c_stop(struct seq_file *m, void *p)
33{
34 up_read(&crypto_alg_sem);
35}
36
37static int c_show(struct seq_file *m, void *p)
38{
39 struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
40
41 seq_printf(m, "name : %s\n", alg->cra_name);
42 seq_printf(m, "driver : %s\n", alg->cra_driver_name);
43 seq_printf(m, "module : %s\n", module_name(alg->cra_module));
44 seq_printf(m, "priority : %d\n", alg->cra_priority);
45 seq_printf(m, "refcnt : %u\n", refcount_read(&alg->cra_refcnt));
46 seq_printf(m, "selftest : %s\n",
47 (alg->cra_flags & CRYPTO_ALG_TESTED) ?
48 "passed" : "unknown");
49 seq_printf(m, "internal : %s\n",
50 (alg->cra_flags & CRYPTO_ALG_INTERNAL) ?
51 "yes" : "no");
52 if (fips_enabled) {
53 seq_printf(m, "fips : %s\n",
54 (alg->cra_flags & CRYPTO_ALG_FIPS_INTERNAL) ?
55 "no" : "yes");
56 }
57
58 if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
59 seq_printf(m, "type : larval\n");
60 seq_printf(m, "flags : 0x%x\n", alg->cra_flags);
61 goto out;
62 }
63
64 if (alg->cra_type && alg->cra_type->show) {
65 alg->cra_type->show(m, alg);
66 goto out;
67 }
68
69 switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
70 case CRYPTO_ALG_TYPE_CIPHER:
71 seq_printf(m, "type : cipher\n");
72 seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
73 seq_printf(m, "min keysize : %u\n",
74 alg->cra_cipher.cia_min_keysize);
75 seq_printf(m, "max keysize : %u\n",
76 alg->cra_cipher.cia_max_keysize);
77 break;
78 case CRYPTO_ALG_TYPE_COMPRESS:
79 seq_printf(m, "type : compression\n");
80 break;
81 default:
82 seq_printf(m, "type : unknown\n");
83 break;
84 }
85
86out:
87 seq_putc(m, '\n');
88 return 0;
89}
90
91static const struct seq_operations crypto_seq_ops = {
92 .start = c_start,
93 .next = c_next,
94 .stop = c_stop,
95 .show = c_show
96};
97
98void __init crypto_init_proc(void)
99{
100 proc_create_seq("crypto", 0, NULL, &crypto_seq_ops);
101}
102
103void __exit crypto_exit_proc(void)
104{
105 remove_proc_entry("crypto", NULL);
106}
1/*
2 * Scatterlist Cryptographic API.
3 *
4 * Procfs information.
5 *
6 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
7 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 *
14 */
15
16#include <linux/atomic.h>
17#include <linux/init.h>
18#include <linux/crypto.h>
19#include <linux/module.h> /* for module_name() */
20#include <linux/rwsem.h>
21#include <linux/proc_fs.h>
22#include <linux/seq_file.h>
23#include "internal.h"
24
25static void *c_start(struct seq_file *m, loff_t *pos)
26{
27 down_read(&crypto_alg_sem);
28 return seq_list_start(&crypto_alg_list, *pos);
29}
30
31static void *c_next(struct seq_file *m, void *p, loff_t *pos)
32{
33 return seq_list_next(p, &crypto_alg_list, pos);
34}
35
36static void c_stop(struct seq_file *m, void *p)
37{
38 up_read(&crypto_alg_sem);
39}
40
41static int c_show(struct seq_file *m, void *p)
42{
43 struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
44
45 seq_printf(m, "name : %s\n", alg->cra_name);
46 seq_printf(m, "driver : %s\n", alg->cra_driver_name);
47 seq_printf(m, "module : %s\n", module_name(alg->cra_module));
48 seq_printf(m, "priority : %d\n", alg->cra_priority);
49 seq_printf(m, "refcnt : %u\n", refcount_read(&alg->cra_refcnt));
50 seq_printf(m, "selftest : %s\n",
51 (alg->cra_flags & CRYPTO_ALG_TESTED) ?
52 "passed" : "unknown");
53 seq_printf(m, "internal : %s\n",
54 (alg->cra_flags & CRYPTO_ALG_INTERNAL) ?
55 "yes" : "no");
56
57 if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
58 seq_printf(m, "type : larval\n");
59 seq_printf(m, "flags : 0x%x\n", alg->cra_flags);
60 goto out;
61 }
62
63 if (alg->cra_type && alg->cra_type->show) {
64 alg->cra_type->show(m, alg);
65 goto out;
66 }
67
68 switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {
69 case CRYPTO_ALG_TYPE_CIPHER:
70 seq_printf(m, "type : cipher\n");
71 seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
72 seq_printf(m, "min keysize : %u\n",
73 alg->cra_cipher.cia_min_keysize);
74 seq_printf(m, "max keysize : %u\n",
75 alg->cra_cipher.cia_max_keysize);
76 break;
77 case CRYPTO_ALG_TYPE_COMPRESS:
78 seq_printf(m, "type : compression\n");
79 break;
80 default:
81 seq_printf(m, "type : unknown\n");
82 break;
83 }
84
85out:
86 seq_putc(m, '\n');
87 return 0;
88}
89
90static const struct seq_operations crypto_seq_ops = {
91 .start = c_start,
92 .next = c_next,
93 .stop = c_stop,
94 .show = c_show
95};
96
97static int crypto_info_open(struct inode *inode, struct file *file)
98{
99 return seq_open(file, &crypto_seq_ops);
100}
101
102static const struct file_operations proc_crypto_ops = {
103 .open = crypto_info_open,
104 .read = seq_read,
105 .llseek = seq_lseek,
106 .release = seq_release
107};
108
109void __init crypto_init_proc(void)
110{
111 proc_create("crypto", 0, NULL, &proc_crypto_ops);
112}
113
114void __exit crypto_exit_proc(void)
115{
116 remove_proc_entry("crypto", NULL);
117}