2 * Scatterlist Cryptographic API.
6 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
7 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
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)
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>
25 static void *c_start(struct seq_file *m, loff_t *pos)
27 down_read(&crypto_alg_sem);
28 return seq_list_start(&crypto_alg_list, *pos);
31 static void *c_next(struct seq_file *m, void *p, loff_t *pos)
33 return seq_list_next(p, &crypto_alg_list, pos);
36 static void c_stop(struct seq_file *m, void *p)
38 up_read(&crypto_alg_sem);
41 static int c_show(struct seq_file *m, void *p)
43 struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
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 : %d\n", atomic_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) ?
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);
63 if (alg->cra_type && alg->cra_type->show) {
64 alg->cra_type->show(m, alg);
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);
77 case CRYPTO_ALG_TYPE_COMPRESS:
78 seq_printf(m, "type : compression\n");
81 seq_printf(m, "type : unknown\n");
90 static const struct seq_operations crypto_seq_ops = {
97 static int crypto_info_open(struct inode *inode, struct file *file)
99 return seq_open(file, &crypto_seq_ops);
102 static const struct file_operations proc_crypto_ops = {
103 .open = crypto_info_open,
106 .release = seq_release
109 void __init crypto_init_proc(void)
111 proc_create("crypto", 0, NULL, &proc_crypto_ops);
114 void __exit crypto_exit_proc(void)
116 remove_proc_entry("crypto", NULL);