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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 | /* * Scatterlist Cryptographic API. * * Procfs information. * * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * */ #include <linux/atomic.h> #include <linux/init.h> #include <linux/crypto.h> #include <linux/module.h> /* for module_name() */ #include <linux/rwsem.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include "internal.h" static void *c_start(struct seq_file *m, loff_t *pos) { down_read(&crypto_alg_sem); return seq_list_start(&crypto_alg_list, *pos); } static void *c_next(struct seq_file *m, void *p, loff_t *pos) { return seq_list_next(p, &crypto_alg_list, pos); } static void c_stop(struct seq_file *m, void *p) { up_read(&crypto_alg_sem); } static int c_show(struct seq_file *m, void *p) { struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list); seq_printf(m, "name : %s\n", alg->cra_name); seq_printf(m, "driver : %s\n", alg->cra_driver_name); seq_printf(m, "module : %s\n", module_name(alg->cra_module)); seq_printf(m, "priority : %d\n", alg->cra_priority); seq_printf(m, "refcnt : %u\n", refcount_read(&alg->cra_refcnt)); seq_printf(m, "selftest : %s\n", (alg->cra_flags & CRYPTO_ALG_TESTED) ? "passed" : "unknown"); seq_printf(m, "internal : %s\n", (alg->cra_flags & CRYPTO_ALG_INTERNAL) ? "yes" : "no"); if (alg->cra_flags & CRYPTO_ALG_LARVAL) { seq_printf(m, "type : larval\n"); seq_printf(m, "flags : 0x%x\n", alg->cra_flags); goto out; } if (alg->cra_type && alg->cra_type->show) { alg->cra_type->show(m, alg); goto out; } switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) { case CRYPTO_ALG_TYPE_CIPHER: seq_printf(m, "type : cipher\n"); seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); seq_printf(m, "min keysize : %u\n", alg->cra_cipher.cia_min_keysize); seq_printf(m, "max keysize : %u\n", alg->cra_cipher.cia_max_keysize); break; case CRYPTO_ALG_TYPE_COMPRESS: seq_printf(m, "type : compression\n"); break; default: seq_printf(m, "type : unknown\n"); break; } out: seq_putc(m, '\n'); return 0; } static const struct seq_operations crypto_seq_ops = { .start = c_start, .next = c_next, .stop = c_stop, .show = c_show }; static int crypto_info_open(struct inode *inode, struct file *file) { return seq_open(file, &crypto_seq_ops); } static const struct file_operations proc_crypto_ops = { .open = crypto_info_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release }; void __init crypto_init_proc(void) { proc_create("crypto", 0, NULL, &proc_crypto_ops); } void __exit crypto_exit_proc(void) { remove_proc_entry("crypto", NULL); } |