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