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- // SPDX-License-Identifier: GPL-2.0-or-later
- /**
- * eCryptfs: Linux filesystem encryption layer
- * Functions only useful for debugging.
- *
- * Copyright (C) 2006 International Business Machines Corp.
- * Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
- */
- #include "ecryptfs_kernel.h"
- /**
- * ecryptfs_dump_auth_tok - debug function to print auth toks
- *
- * This function will print the contents of an ecryptfs authentication
- * token.
- */
- void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok)
- {
- char salt[ECRYPTFS_SALT_SIZE * 2 + 1];
- char sig[ECRYPTFS_SIG_SIZE_HEX + 1];
- ecryptfs_printk(KERN_DEBUG, "Auth tok at mem loc [%p]:\n",
- auth_tok);
- if (auth_tok->flags & ECRYPTFS_PRIVATE_KEY) {
- ecryptfs_printk(KERN_DEBUG, " * private key type\n");
- } else {
- ecryptfs_printk(KERN_DEBUG, " * passphrase type\n");
- ecryptfs_to_hex(salt, auth_tok->token.password.salt,
- ECRYPTFS_SALT_SIZE);
- salt[ECRYPTFS_SALT_SIZE * 2] = '\0';
- ecryptfs_printk(KERN_DEBUG, " * salt = [%s]\n", salt);
- if (auth_tok->token.password.flags &
- ECRYPTFS_PERSISTENT_PASSWORD) {
- ecryptfs_printk(KERN_DEBUG, " * persistent\n");
- }
- memcpy(sig, auth_tok->token.password.signature,
- ECRYPTFS_SIG_SIZE_HEX);
- sig[ECRYPTFS_SIG_SIZE_HEX] = '\0';
- ecryptfs_printk(KERN_DEBUG, " * signature = [%s]\n", sig);
- }
- ecryptfs_printk(KERN_DEBUG, " * session_key.flags = [0x%x]\n",
- auth_tok->session_key.flags);
- if (auth_tok->session_key.flags
- & ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT)
- ecryptfs_printk(KERN_DEBUG,
- " * Userspace decrypt request set\n");
- if (auth_tok->session_key.flags
- & ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT)
- ecryptfs_printk(KERN_DEBUG,
- " * Userspace encrypt request set\n");
- if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_DECRYPTED_KEY) {
- ecryptfs_printk(KERN_DEBUG, " * Contains decrypted key\n");
- ecryptfs_printk(KERN_DEBUG,
- " * session_key.decrypted_key_size = [0x%x]\n",
- auth_tok->session_key.decrypted_key_size);
- ecryptfs_printk(KERN_DEBUG, " * Decrypted session key "
- "dump:\n");
- if (ecryptfs_verbosity > 0)
- ecryptfs_dump_hex(auth_tok->session_key.decrypted_key,
- ECRYPTFS_DEFAULT_KEY_BYTES);
- }
- if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_ENCRYPTED_KEY) {
- ecryptfs_printk(KERN_DEBUG, " * Contains encrypted key\n");
- ecryptfs_printk(KERN_DEBUG,
- " * session_key.encrypted_key_size = [0x%x]\n",
- auth_tok->session_key.encrypted_key_size);
- ecryptfs_printk(KERN_DEBUG, " * Encrypted session key "
- "dump:\n");
- if (ecryptfs_verbosity > 0)
- ecryptfs_dump_hex(auth_tok->session_key.encrypted_key,
- auth_tok->session_key.
- encrypted_key_size);
- }
- }
- /**
- * ecryptfs_dump_hex - debug hex printer
- * @data: string of bytes to be printed
- * @bytes: number of bytes to print
- *
- * Dump hexadecimal representation of char array
- */
- void ecryptfs_dump_hex(char *data, int bytes)
- {
- if (ecryptfs_verbosity < 1)
- return;
- print_hex_dump(KERN_DEBUG, "ecryptfs: ", DUMP_PREFIX_OFFSET, 16, 1,
- data, bytes, false);
- }
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