Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Scatterlist Cryptographic API. |
| 3 | * |
| 4 | * Procfs information. |
| 5 | * |
| 6 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> |
Herbert Xu | 5cb1454 | 2005-11-05 16:58:14 +1100 | [diff] [blame] | 7 | * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Herbert Xu | 6521f30 | 2006-08-06 20:28:44 +1000 | [diff] [blame] | 15 | |
| 16 | #include <asm/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/init.h> |
| 18 | #include <linux/crypto.h> |
| 19 | #include <linux/rwsem.h> |
| 20 | #include <linux/proc_fs.h> |
| 21 | #include <linux/seq_file.h> |
| 22 | #include "internal.h" |
| 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | static void *c_start(struct seq_file *m, loff_t *pos) |
| 25 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | down_read(&crypto_alg_sem); |
Pavel Emelianov | 13d3189 | 2007-07-15 23:39:53 -0700 | [diff] [blame] | 27 | return seq_list_start(&crypto_alg_list, *pos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | } |
| 29 | |
| 30 | static void *c_next(struct seq_file *m, void *p, loff_t *pos) |
| 31 | { |
Pavel Emelianov | 13d3189 | 2007-07-15 23:39:53 -0700 | [diff] [blame] | 32 | return seq_list_next(p, &crypto_alg_list, pos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | } |
| 34 | |
| 35 | static void c_stop(struct seq_file *m, void *p) |
| 36 | { |
| 37 | up_read(&crypto_alg_sem); |
| 38 | } |
| 39 | |
| 40 | static int c_show(struct seq_file *m, void *p) |
| 41 | { |
Pavel Emelianov | 13d3189 | 2007-07-15 23:39:53 -0700 | [diff] [blame] | 42 | struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
| 44 | seq_printf(m, "name : %s\n", alg->cra_name); |
Herbert Xu | 5cb1454 | 2005-11-05 16:58:14 +1100 | [diff] [blame] | 45 | seq_printf(m, "driver : %s\n", alg->cra_driver_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | seq_printf(m, "module : %s\n", module_name(alg->cra_module)); |
Herbert Xu | 5cb1454 | 2005-11-05 16:58:14 +1100 | [diff] [blame] | 47 | seq_printf(m, "priority : %d\n", alg->cra_priority); |
Herbert Xu | 6521f30 | 2006-08-06 20:28:44 +1000 | [diff] [blame] | 48 | seq_printf(m, "refcnt : %d\n", atomic_read(&alg->cra_refcnt)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Herbert Xu | a7581a0 | 2008-08-04 14:22:29 +0800 | [diff] [blame^] | 50 | switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | case CRYPTO_ALG_TYPE_CIPHER: |
| 52 | seq_printf(m, "type : cipher\n"); |
| 53 | seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); |
| 54 | seq_printf(m, "min keysize : %u\n", |
| 55 | alg->cra_cipher.cia_min_keysize); |
| 56 | seq_printf(m, "max keysize : %u\n", |
| 57 | alg->cra_cipher.cia_max_keysize); |
| 58 | break; |
| 59 | |
| 60 | case CRYPTO_ALG_TYPE_DIGEST: |
| 61 | seq_printf(m, "type : digest\n"); |
| 62 | seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); |
| 63 | seq_printf(m, "digestsize : %u\n", |
| 64 | alg->cra_digest.dia_digestsize); |
| 65 | break; |
| 66 | case CRYPTO_ALG_TYPE_COMPRESS: |
| 67 | seq_printf(m, "type : compression\n"); |
| 68 | break; |
| 69 | default: |
Herbert Xu | a7581a0 | 2008-08-04 14:22:29 +0800 | [diff] [blame^] | 70 | if (alg->cra_flags & CRYPTO_ALG_LARVAL) { |
| 71 | seq_printf(m, "type : larval\n"); |
| 72 | seq_printf(m, "flags : 0x%x\n", alg->cra_flags); |
| 73 | } else if (alg->cra_type && alg->cra_type->show) |
Herbert Xu | e853c3c | 2006-08-22 00:06:54 +1000 | [diff] [blame] | 74 | alg->cra_type->show(m, alg); |
| 75 | else |
| 76 | seq_printf(m, "type : unknown\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | break; |
| 78 | } |
| 79 | |
| 80 | seq_putc(m, '\n'); |
| 81 | return 0; |
| 82 | } |
| 83 | |
Jan Engelhardt | 48c8949 | 2008-03-13 19:37:45 +0800 | [diff] [blame] | 84 | static const struct seq_operations crypto_seq_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | .start = c_start, |
| 86 | .next = c_next, |
| 87 | .stop = c_stop, |
| 88 | .show = c_show |
| 89 | }; |
| 90 | |
| 91 | static int crypto_info_open(struct inode *inode, struct file *file) |
| 92 | { |
| 93 | return seq_open(file, &crypto_seq_ops); |
| 94 | } |
| 95 | |
Arjan van de Ven | 2b8693c | 2007-02-12 00:55:32 -0800 | [diff] [blame] | 96 | static const struct file_operations proc_crypto_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | .open = crypto_info_open, |
| 98 | .read = seq_read, |
| 99 | .llseek = seq_lseek, |
| 100 | .release = seq_release |
| 101 | }; |
| 102 | |
| 103 | void __init crypto_init_proc(void) |
| 104 | { |
Alexey Dobriyan | 607424d | 2008-03-05 19:27:51 +0800 | [diff] [blame] | 105 | proc_create("crypto", 0, NULL, &proc_crypto_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | } |
Herbert Xu | cce9e06 | 2006-08-21 21:08:13 +1000 | [diff] [blame] | 107 | |
| 108 | void __exit crypto_exit_proc(void) |
| 109 | { |
| 110 | remove_proc_entry("crypto", NULL); |
| 111 | } |