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![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): 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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/**
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* eCryptfs: Linux filesystem encryption layer
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* Functions only useful for debugging.
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*
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* Copyright (C) 2006 International Business Machines Corp.
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* Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
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*/
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#include "ecryptfs_kernel.h"
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/**
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* ecryptfs_dump_auth_tok - debug function to print auth toks
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*
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* This function will print the contents of an ecryptfs authentication
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* token.
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*/
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void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok)
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{
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char salt[ECRYPTFS_SALT_SIZE * 2 + 1];
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char sig[ECRYPTFS_SIG_SIZE_HEX + 1];
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ecryptfs_printk(KERN_DEBUG, "Auth tok at mem loc [%p]:\n",
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auth_tok);
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if (auth_tok->flags & ECRYPTFS_PRIVATE_KEY) {
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ecryptfs_printk(KERN_DEBUG, " * private key type\n");
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} else {
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ecryptfs_printk(KERN_DEBUG, " * passphrase type\n");
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ecryptfs_to_hex(salt, auth_tok->token.password.salt,
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ECRYPTFS_SALT_SIZE);
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salt[ECRYPTFS_SALT_SIZE * 2] = '\0';
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ecryptfs_printk(KERN_DEBUG, " * salt = [%s]\n", salt);
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if (auth_tok->token.password.flags &
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ECRYPTFS_PERSISTENT_PASSWORD) {
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ecryptfs_printk(KERN_DEBUG, " * persistent\n");
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}
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memcpy(sig, auth_tok->token.password.signature,
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ECRYPTFS_SIG_SIZE_HEX);
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sig[ECRYPTFS_SIG_SIZE_HEX] = '\0';
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ecryptfs_printk(KERN_DEBUG, " * signature = [%s]\n", sig);
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}
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ecryptfs_printk(KERN_DEBUG, " * session_key.flags = [0x%x]\n",
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auth_tok->session_key.flags);
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if (auth_tok->session_key.flags
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& ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT)
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ecryptfs_printk(KERN_DEBUG,
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" * Userspace decrypt request set\n");
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if (auth_tok->session_key.flags
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& ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT)
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ecryptfs_printk(KERN_DEBUG,
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" * Userspace encrypt request set\n");
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if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_DECRYPTED_KEY) {
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ecryptfs_printk(KERN_DEBUG, " * Contains decrypted key\n");
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ecryptfs_printk(KERN_DEBUG,
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" * session_key.decrypted_key_size = [0x%x]\n",
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auth_tok->session_key.decrypted_key_size);
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ecryptfs_printk(KERN_DEBUG, " * Decrypted session key "
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"dump:\n");
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if (ecryptfs_verbosity > 0)
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ecryptfs_dump_hex(auth_tok->session_key.decrypted_key,
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ECRYPTFS_DEFAULT_KEY_BYTES);
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}
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if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_ENCRYPTED_KEY) {
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ecryptfs_printk(KERN_DEBUG, " * Contains encrypted key\n");
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ecryptfs_printk(KERN_DEBUG,
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" * session_key.encrypted_key_size = [0x%x]\n",
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auth_tok->session_key.encrypted_key_size);
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ecryptfs_printk(KERN_DEBUG, " * Encrypted session key "
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"dump:\n");
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if (ecryptfs_verbosity > 0)
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ecryptfs_dump_hex(auth_tok->session_key.encrypted_key,
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auth_tok->session_key.
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encrypted_key_size);
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}
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}
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/**
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* ecryptfs_dump_hex - debug hex printer
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* @data: string of bytes to be printed
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* @bytes: number of bytes to print
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*
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* Dump hexadecimal representation of char array
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*/
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void ecryptfs_dump_hex(char *data, int bytes)
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{
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int i = 0;
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int add_newline = 1;
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if (ecryptfs_verbosity < 1)
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return;
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if (bytes != 0) {
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printk(KERN_DEBUG "0x%.2x.", (unsigned char)data[i]);
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i++;
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}
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while (i < bytes) {
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printk("0x%.2x.", (unsigned char)data[i]);
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i++;
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if (i % 16 == 0) {
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printk("\n");
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add_newline = 0;
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} else
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add_newline = 1;
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}
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if (add_newline)
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printk("\n");
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}
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