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100 lines
2.5 KiB
100 lines
2.5 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Scatterlist Cryptographic API. |
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* |
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* Procfs information. |
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* |
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* Copyright (c) 2002 James Morris <[email protected]> |
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* Copyright (c) 2005 Herbert Xu <[email protected]> |
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*/ |
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#include <linux/atomic.h> |
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#include <linux/init.h> |
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#include <linux/crypto.h> |
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#include <linux/module.h> /* for module_name() */ |
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#include <linux/rwsem.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include "internal.h" |
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static void *c_start(struct seq_file *m, loff_t *pos) |
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{ |
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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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} |
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static void *c_next(struct seq_file *m, void *p, loff_t *pos) |
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{ |
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return seq_list_next(p, &crypto_alg_list, pos); |
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} |
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static void c_stop(struct seq_file *m, void *p) |
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{ |
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up_read(&crypto_alg_sem); |
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} |
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static int c_show(struct seq_file *m, void *p) |
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{ |
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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\n", alg->cra_name); |
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seq_printf(m, "driver : %s\n", alg->cra_driver_name); |
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seq_printf(m, "module : %s\n", module_name(alg->cra_module)); |
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seq_printf(m, "priority : %d\n", alg->cra_priority); |
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seq_printf(m, "refcnt : %u\n", refcount_read(&alg->cra_refcnt)); |
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seq_printf(m, "selftest : %s\n", |
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(alg->cra_flags & CRYPTO_ALG_TESTED) ? |
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"passed" : "unknown"); |
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seq_printf(m, "internal : %s\n", |
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(alg->cra_flags & CRYPTO_ALG_INTERNAL) ? |
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"yes" : "no"); |
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if (alg->cra_flags & CRYPTO_ALG_LARVAL) { |
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seq_printf(m, "type : larval\n"); |
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seq_printf(m, "flags : 0x%x\n", alg->cra_flags); |
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goto out; |
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} |
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if (alg->cra_type && alg->cra_type->show) { |
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alg->cra_type->show(m, alg); |
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goto out; |
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} |
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switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { |
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case CRYPTO_ALG_TYPE_CIPHER: |
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seq_printf(m, "type : cipher\n"); |
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seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); |
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seq_printf(m, "min keysize : %u\n", |
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alg->cra_cipher.cia_min_keysize); |
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seq_printf(m, "max keysize : %u\n", |
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alg->cra_cipher.cia_max_keysize); |
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break; |
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case CRYPTO_ALG_TYPE_COMPRESS: |
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seq_printf(m, "type : compression\n"); |
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break; |
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default: |
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seq_printf(m, "type : unknown\n"); |
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break; |
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} |
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out: |
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seq_putc(m, '\n'); |
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return 0; |
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} |
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static const struct seq_operations crypto_seq_ops = { |
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.start = c_start, |
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.next = c_next, |
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.stop = c_stop, |
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.show = c_show |
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}; |
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void __init crypto_init_proc(void) |
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{ |
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proc_create_seq("crypto", 0, NULL, &crypto_seq_ops); |
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} |
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void __exit crypto_exit_proc(void) |
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{ |
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remove_proc_entry("crypto", NULL); |
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}
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