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 <asm/atomic.h>
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>
24 static void *c_start(struct seq_file *m, loff_t *pos)
26 down_read(&crypto_alg_sem);
27 return seq_list_start(&crypto_alg_list, *pos);
30 static void *c_next(struct seq_file *m, void *p, loff_t *pos)
32 return seq_list_next(p, &crypto_alg_list, pos);
35 static void c_stop(struct seq_file *m, void *p)
37 up_read(&crypto_alg_sem);
40 static int c_show(struct seq_file *m, void *p)
42 struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list);
44 seq_printf(m, "name : %s\n", alg->cra_name);
45 seq_printf(m, "driver : %s\n", alg->cra_driver_name);
46 seq_printf(m, "module : %s\n", module_name(alg->cra_module));
47 seq_printf(m, "priority : %d\n", alg->cra_priority);
48 seq_printf(m, "refcnt : %d\n", atomic_read(&alg->cra_refcnt));
50 switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
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);
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);
66 case CRYPTO_ALG_TYPE_COMPRESS:
67 seq_printf(m, "type : compression\n");
70 if (alg->cra_type && alg->cra_type->show)
71 alg->cra_type->show(m, alg);
73 seq_printf(m, "type : unknown\n");
81 static struct seq_operations crypto_seq_ops = {
88 static int crypto_info_open(struct inode *inode, struct file *file)
90 return seq_open(file, &crypto_seq_ops);
93 static const struct file_operations proc_crypto_ops = {
94 .open = crypto_info_open,
97 .release = seq_release
100 void __init crypto_init_proc(void)
102 struct proc_dir_entry *proc;
104 proc = create_proc_entry("crypto", 0, NULL);
106 proc->proc_fops = &proc_crypto_ops;
109 void __exit crypto_exit_proc(void)
111 remove_proc_entry("crypto", NULL);