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crypto/proc.c
2.99 KB
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/* * Scatterlist Cryptographic API. * * Procfs information. * * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> |
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* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> |
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* * 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. * */ |
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#include <linux/atomic.h> |
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#include <linux/init.h> #include <linux/crypto.h> |
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#include <linux/module.h> /* for module_name() */ |
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#include <linux/rwsem.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include "internal.h" |
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static void *c_start(struct seq_file *m, loff_t *pos) { |
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down_read(&crypto_alg_sem); |
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return seq_list_start(&crypto_alg_list, *pos); |
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} static void *c_next(struct seq_file *m, void *p, loff_t *pos) { |
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return seq_list_next(p, &crypto_alg_list, pos); |
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} 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) { |
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struct crypto_alg *alg = list_entry(p, struct crypto_alg, cra_list); |
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seq_printf(m, "name : %s ", alg->cra_name); |
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seq_printf(m, "driver : %s ", alg->cra_driver_name); |
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seq_printf(m, "module : %s ", module_name(alg->cra_module)); |
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seq_printf(m, "priority : %d ", alg->cra_priority); |
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seq_printf(m, "refcnt : %d ", atomic_read(&alg->cra_refcnt)); |
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seq_printf(m, "selftest : %s ", (alg->cra_flags & CRYPTO_ALG_TESTED) ? "passed" : "unknown"); |
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seq_printf(m, "internal : %s ", (alg->cra_flags & CRYPTO_ALG_INTERNAL) ? "yes" : "no"); |
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if (alg->cra_flags & CRYPTO_ALG_LARVAL) { seq_printf(m, "type : larval "); seq_printf(m, "flags : 0x%x ", alg->cra_flags); goto out; } if (alg->cra_type && alg->cra_type->show) { alg->cra_type->show(m, alg); goto out; } |
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switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) { |
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case CRYPTO_ALG_TYPE_CIPHER: seq_printf(m, "type : cipher "); seq_printf(m, "blocksize : %u ", alg->cra_blocksize); seq_printf(m, "min keysize : %u ", alg->cra_cipher.cia_min_keysize); seq_printf(m, "max keysize : %u ", alg->cra_cipher.cia_max_keysize); break; |
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case CRYPTO_ALG_TYPE_COMPRESS: seq_printf(m, "type : compression "); break; default: |
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seq_printf(m, "type : unknown "); |
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break; } |
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out: |
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seq_putc(m, ' '); return 0; } |
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static const struct seq_operations crypto_seq_ops = { |
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.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); } |
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static const struct file_operations proc_crypto_ops = { |
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.open = crypto_info_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release }; void __init crypto_init_proc(void) { |
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proc_create("crypto", 0, NULL, &proc_crypto_ops); |
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} |
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void __exit crypto_exit_proc(void) { remove_proc_entry("crypto", NULL); } |