1/* 2 * Scatterlist Cryptographic API. 3 * 4 * Procfs information. 5 * 6 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the Free 10 * Software Foundation; either version 2 of the License, or (at your option) 11 * any later version. 12 * 13 */ 14#include <linux/init.h> 15//#include <linux/crypto.h> 16#include "rtl_crypto.h" 17#include <linux/rwsem.h> 18#include <linux/proc_fs.h> 19#include <linux/seq_file.h> 20#include "internal.h" 21 22extern struct list_head crypto_alg_list; 23extern struct rw_semaphore crypto_alg_sem; 24 25static void *c_start(struct seq_file *m, loff_t *pos) 26{ 27 struct list_head *v; 28 loff_t n = *pos; 29 30 down_read(&crypto_alg_sem); 31 list_for_each(v, &crypto_alg_list) 32 if (!n--) 33 return list_entry(v, struct crypto_alg, cra_list); 34 return NULL; 35} 36 37static void *c_next(struct seq_file *m, void *p, loff_t *pos) 38{ 39 struct list_head *v = p; 40 41 (*pos)++; 42 v = v->next; 43 return (v == &crypto_alg_list) ? 44 NULL : list_entry(v, struct crypto_alg, cra_list); 45} 46 47static void c_stop(struct seq_file *m, void *p) 48{ 49 up_read(&crypto_alg_sem); 50} 51 52static int c_show(struct seq_file *m, void *p) 53{ 54 struct crypto_alg *alg = (struct crypto_alg *)p; 55 56 seq_printf(m, "name : %s\n", alg->cra_name); 57 seq_printf(m, "module : %s\n", 58 (alg->cra_module ? 59 alg->cra_module->name : 60 "kernel")); 61 62 switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { 63 case CRYPTO_ALG_TYPE_CIPHER: 64 seq_printf(m, "type : cipher\n"); 65 seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); 66 seq_printf(m, "min keysize : %u\n", 67 alg->cra_cipher.cia_min_keysize); 68 seq_printf(m, "max keysize : %u\n", 69 alg->cra_cipher.cia_max_keysize); 70 break; 71 72 case CRYPTO_ALG_TYPE_DIGEST: 73 seq_printf(m, "type : digest\n"); 74 seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); 75 seq_printf(m, "digestsize : %u\n", 76 alg->cra_digest.dia_digestsize); 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 86 seq_putc(m, '\n'); 87 return 0; 88} 89 90static 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 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 struct proc_dir_entry *proc; 112 113 proc = create_proc_entry("crypto", 0, NULL); 114 if (proc) 115 proc->proc_fops = &proc_crypto_ops; 116} 117