1 // SPDX-License-Identifier: GPL-2.0-or-later <<
2 /* 1 /*
3 * Scatterlist Cryptographic API. 2 * Scatterlist Cryptographic API.
4 * 3 *
5 * Procfs information. 4 * Procfs information.
6 * 5 *
7 * Copyright (c) 2002 James Morris <jmorris@in 6 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
8 * Copyright (c) 2005 Herbert Xu <herbert@gond 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 *
9 */ 14 */
10 15
11 #include <linux/atomic.h> 16 #include <linux/atomic.h>
12 #include <linux/init.h> 17 #include <linux/init.h>
13 #include <linux/crypto.h> 18 #include <linux/crypto.h>
14 #include <linux/fips.h> <<
15 #include <linux/module.h> /* for module_ 19 #include <linux/module.h> /* for module_name() */
16 #include <linux/rwsem.h> 20 #include <linux/rwsem.h>
17 #include <linux/proc_fs.h> 21 #include <linux/proc_fs.h>
18 #include <linux/seq_file.h> 22 #include <linux/seq_file.h>
19 #include "internal.h" 23 #include "internal.h"
20 24
21 static void *c_start(struct seq_file *m, loff_ 25 static void *c_start(struct seq_file *m, loff_t *pos)
22 { 26 {
23 down_read(&crypto_alg_sem); 27 down_read(&crypto_alg_sem);
24 return seq_list_start(&crypto_alg_list 28 return seq_list_start(&crypto_alg_list, *pos);
25 } 29 }
26 30
27 static void *c_next(struct seq_file *m, void * 31 static void *c_next(struct seq_file *m, void *p, loff_t *pos)
28 { 32 {
29 return seq_list_next(p, &crypto_alg_li 33 return seq_list_next(p, &crypto_alg_list, pos);
30 } 34 }
31 35
32 static void c_stop(struct seq_file *m, void *p 36 static void c_stop(struct seq_file *m, void *p)
33 { 37 {
34 up_read(&crypto_alg_sem); 38 up_read(&crypto_alg_sem);
35 } 39 }
36 40
37 static int c_show(struct seq_file *m, void *p) 41 static int c_show(struct seq_file *m, void *p)
38 { 42 {
39 struct crypto_alg *alg = list_entry(p, 43 struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
40 !! 44
41 seq_printf(m, "name : %s\n", a 45 seq_printf(m, "name : %s\n", alg->cra_name);
42 seq_printf(m, "driver : %s\n", a 46 seq_printf(m, "driver : %s\n", alg->cra_driver_name);
43 seq_printf(m, "module : %s\n", m 47 seq_printf(m, "module : %s\n", module_name(alg->cra_module));
44 seq_printf(m, "priority : %d\n", a 48 seq_printf(m, "priority : %d\n", alg->cra_priority);
45 seq_printf(m, "refcnt : %u\n", r !! 49 seq_printf(m, "refcnt : %d\n", atomic_read(&alg->cra_refcnt));
46 seq_printf(m, "selftest : %s\n", 50 seq_printf(m, "selftest : %s\n",
47 (alg->cra_flags & CRYPTO_AL 51 (alg->cra_flags & CRYPTO_ALG_TESTED) ?
48 "passed" : "unknown"); 52 "passed" : "unknown");
49 seq_printf(m, "internal : %s\n", 53 seq_printf(m, "internal : %s\n",
50 (alg->cra_flags & CRYPTO_AL 54 (alg->cra_flags & CRYPTO_ALG_INTERNAL) ?
51 "yes" : "no"); 55 "yes" : "no");
52 if (fips_enabled) { <<
53 seq_printf(m, "fips : <<
54 (alg->cra_flags & C <<
55 "no" : "yes"); <<
56 } <<
57 56
58 if (alg->cra_flags & CRYPTO_ALG_LARVAL 57 if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
59 seq_printf(m, "type : 58 seq_printf(m, "type : larval\n");
60 seq_printf(m, "flags : 59 seq_printf(m, "flags : 0x%x\n", alg->cra_flags);
61 goto out; 60 goto out;
62 } 61 }
63 62
64 if (alg->cra_type && alg->cra_type->sh 63 if (alg->cra_type && alg->cra_type->show) {
65 alg->cra_type->show(m, alg); 64 alg->cra_type->show(m, alg);
66 goto out; 65 goto out;
67 } 66 }
68 !! 67
69 switch (alg->cra_flags & CRYPTO_ALG_TY !! 68 switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {
70 case CRYPTO_ALG_TYPE_CIPHER: 69 case CRYPTO_ALG_TYPE_CIPHER:
71 seq_printf(m, "type : 70 seq_printf(m, "type : cipher\n");
72 seq_printf(m, "blocksize : 71 seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
73 seq_printf(m, "min keysize : 72 seq_printf(m, "min keysize : %u\n",
74 alg->c 73 alg->cra_cipher.cia_min_keysize);
75 seq_printf(m, "max keysize : 74 seq_printf(m, "max keysize : %u\n",
76 alg->c 75 alg->cra_cipher.cia_max_keysize);
77 break; 76 break;
78 case CRYPTO_ALG_TYPE_COMPRESS: 77 case CRYPTO_ALG_TYPE_COMPRESS:
79 seq_printf(m, "type : 78 seq_printf(m, "type : compression\n");
80 break; 79 break;
81 default: 80 default:
82 seq_printf(m, "type : 81 seq_printf(m, "type : unknown\n");
83 break; 82 break;
84 } 83 }
85 84
86 out: 85 out:
87 seq_putc(m, '\n'); 86 seq_putc(m, '\n');
88 return 0; 87 return 0;
89 } 88 }
90 89
91 static const struct seq_operations crypto_seq_ 90 static const struct seq_operations crypto_seq_ops = {
92 .start = c_start, 91 .start = c_start,
93 .next = c_next, 92 .next = c_next,
94 .stop = c_stop, 93 .stop = c_stop,
95 .show = c_show 94 .show = c_show
96 }; 95 };
97 96
>> 97 static int crypto_info_open(struct inode *inode, struct file *file)
>> 98 {
>> 99 return seq_open(file, &crypto_seq_ops);
>> 100 }
>> 101
>> 102 static 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
98 void __init crypto_init_proc(void) 109 void __init crypto_init_proc(void)
99 { 110 {
100 proc_create_seq("crypto", 0, NULL, &cr !! 111 proc_create("crypto", 0, NULL, &proc_crypto_ops);
101 } 112 }
102 113
103 void __exit crypto_exit_proc(void) 114 void __exit crypto_exit_proc(void)
104 { 115 {
105 remove_proc_entry("crypto", NULL); 116 remove_proc_entry("crypto", NULL);
106 } 117 }
107 118
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