projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 237fead6 MH |
2 | /** |
| 3 | * eCryptfs: Linux filesystem encryption layer | |
| 4 | * Functions only useful for debugging. | |
| 5 | * | |
| 6 | * Copyright (C) 2006 International Business Machines Corp. | |
| 7 | * Author(s): Michael A. Halcrow <mahalcro@us.ibm.com> | |
| 237fead6 MH |
8 | */ |
| 9 | ||
| 10 | #include "ecryptfs_kernel.h" | |
| 11 | ||
| 12 | /** | |
| 13 | * ecryptfs_dump_auth_tok - debug function to print auth toks | |
| 14 | * | |
| 15 | * This function will print the contents of an ecryptfs authentication | |
| 16 | * token. | |
| 17 | */ | |
| 18 | void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok) | |
| 19 | { | |
| 20 | char salt[ECRYPTFS_SALT_SIZE * 2 + 1]; | |
| 21 | char sig[ECRYPTFS_SIG_SIZE_HEX + 1]; | |
| 22 | ||
| 23 | ecryptfs_printk(KERN_DEBUG, "Auth tok at mem loc [%p]:\n", | |
| 24 | auth_tok); | |
| e2bd99ec | 25 | if (auth_tok->flags & ECRYPTFS_PRIVATE_KEY) { |
| 237fead6 | 26 | ecryptfs_printk(KERN_DEBUG, " * private key type\n"); |
| 237fead6 MH |
27 | } else { |
| 28 | ecryptfs_printk(KERN_DEBUG, " * passphrase type\n"); | |
| 29 | ecryptfs_to_hex(salt, auth_tok->token.password.salt, | |
| 30 | ECRYPTFS_SALT_SIZE); | |
| 31 | salt[ECRYPTFS_SALT_SIZE * 2] = '\0'; | |
| 32 | ecryptfs_printk(KERN_DEBUG, " * salt = [%s]\n", salt); | |
| e2bd99ec MH |
33 | if (auth_tok->token.password.flags & |
| 34 | ECRYPTFS_PERSISTENT_PASSWORD) { | |
| 237fead6 MH |
35 | ecryptfs_printk(KERN_DEBUG, " * persistent\n"); |
| 36 | } | |
| 37 | memcpy(sig, auth_tok->token.password.signature, | |
| 38 | ECRYPTFS_SIG_SIZE_HEX); | |
| 39 | sig[ECRYPTFS_SIG_SIZE_HEX] = '\0'; | |
| 40 | ecryptfs_printk(KERN_DEBUG, " * signature = [%s]\n", sig); | |
| 41 | } | |
| 42 | ecryptfs_printk(KERN_DEBUG, " * session_key.flags = [0x%x]\n", | |
| 43 | auth_tok->session_key.flags); | |
| 44 | if (auth_tok->session_key.flags | |
| 45 | & ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT) | |
| 46 | ecryptfs_printk(KERN_DEBUG, | |
| 47 | " * Userspace decrypt request set\n"); | |
| 48 | if (auth_tok->session_key.flags | |
| 49 | & ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT) | |
| 50 | ecryptfs_printk(KERN_DEBUG, | |
| 51 | " * Userspace encrypt request set\n"); | |
| 52 | if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_DECRYPTED_KEY) { | |
| 53 | ecryptfs_printk(KERN_DEBUG, " * Contains decrypted key\n"); | |
| 54 | ecryptfs_printk(KERN_DEBUG, | |
| 55 | " * session_key.decrypted_key_size = [0x%x]\n", | |
| 56 | auth_tok->session_key.decrypted_key_size); | |
| 57 | ecryptfs_printk(KERN_DEBUG, " * Decrypted session key " | |
| 58 | "dump:\n"); | |
| 59 | if (ecryptfs_verbosity > 0) | |
| 60 | ecryptfs_dump_hex(auth_tok->session_key.decrypted_key, | |
| 61 | ECRYPTFS_DEFAULT_KEY_BYTES); | |
| 62 | } | |
| 63 | if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_ENCRYPTED_KEY) { | |
| 64 | ecryptfs_printk(KERN_DEBUG, " * Contains encrypted key\n"); | |
| 65 | ecryptfs_printk(KERN_DEBUG, | |
| 66 | " * session_key.encrypted_key_size = [0x%x]\n", | |
| 67 | auth_tok->session_key.encrypted_key_size); | |
| 68 | ecryptfs_printk(KERN_DEBUG, " * Encrypted session key " | |
| 69 | "dump:\n"); | |
| 70 | if (ecryptfs_verbosity > 0) | |
| 71 | ecryptfs_dump_hex(auth_tok->session_key.encrypted_key, | |
| 72 | auth_tok->session_key. | |
| 73 | encrypted_key_size); | |
| 74 | } | |
| 75 | } | |
| 76 | ||
| 77 | /** | |
| 78 | * ecryptfs_dump_hex - debug hex printer | |
| 79 | * @data: string of bytes to be printed | |
| 80 | * @bytes: number of bytes to print | |
| 81 | * | |
| 82 | * Dump hexadecimal representation of char array | |
| 83 | */ | |
| 84 | void ecryptfs_dump_hex(char *data, int bytes) | |
| 85 | { | |
| 86 | int i = 0; | |
| 87 | int add_newline = 1; | |
| 88 | ||
| 89 | if (ecryptfs_verbosity < 1) | |
| 90 | return; | |
| 91 | if (bytes != 0) { | |
| 92 | printk(KERN_DEBUG "0x%.2x.", (unsigned char)data[i]); | |
| 93 | i++; | |
| 94 | } | |
| 95 | while (i < bytes) { | |
| 96 | printk("0x%.2x.", (unsigned char)data[i]); | |
| 97 | i++; | |
| 98 | if (i % 16 == 0) { | |
| 99 | printk("\n"); | |
| 100 | add_newline = 0; | |
| 101 | } else | |
| 102 | add_newline = 1; | |
| 103 | } | |
| 104 | if (add_newline) | |
| 105 | printk("\n"); | |
| 106 | } | |
| 107 |