Commit | Line | Data |
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b886d83c | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
3323eec9 MZ |
2 | /* |
3 | * Copyright (C) 2005,2006,2007,2008 IBM Corporation | |
4 | * | |
5 | * Authors: | |
6 | * Reiner Sailer <sailer@watson.ibm.com> | |
7 | * Mimi Zohar <zohar@us.ibm.com> | |
8 | * | |
3323eec9 MZ |
9 | * File: ima.h |
10 | * internal Integrity Measurement Architecture (IMA) definitions | |
11 | */ | |
12 | ||
13 | #ifndef __LINUX_IMA_H | |
14 | #define __LINUX_IMA_H | |
15 | ||
16 | #include <linux/types.h> | |
17 | #include <linux/crypto.h> | |
cf222217 | 18 | #include <linux/fs.h> |
3323eec9 MZ |
19 | #include <linux/security.h> |
20 | #include <linux/hash.h> | |
21 | #include <linux/tpm.h> | |
22 | #include <linux/audit.h> | |
1525b06d | 23 | #include <crypto/hash_info.h> |
3323eec9 | 24 | |
f381c272 MZ |
25 | #include "../integrity.h" |
26 | ||
3e8e5503 | 27 | enum ima_show_type { IMA_SHOW_BINARY, IMA_SHOW_BINARY_NO_FIELD_LEN, |
c019e307 | 28 | IMA_SHOW_BINARY_OLD_STRING_FMT, IMA_SHOW_ASCII }; |
20c59ce0 | 29 | enum tpm_pcrs { TPM_PCR0 = 0, TPM_PCR8 = 8, TPM_PCR10 = 10 }; |
3323eec9 MZ |
30 | |
31 | /* digest size for IMA, fits SHA1 or MD5 */ | |
f381c272 | 32 | #define IMA_DIGEST_SIZE SHA1_DIGEST_SIZE |
3323eec9 MZ |
33 | #define IMA_EVENT_NAME_LEN_MAX 255 |
34 | ||
1129d31b | 35 | #define IMA_HASH_BITS 10 |
3323eec9 MZ |
36 | #define IMA_MEASURE_HTABLE_SIZE (1 << IMA_HASH_BITS) |
37 | ||
adf53a77 RS |
38 | #define IMA_TEMPLATE_FIELD_ID_MAX_LEN 16 |
39 | #define IMA_TEMPLATE_NUM_FIELDS_MAX 15 | |
40 | ||
3ce1217d RS |
41 | #define IMA_TEMPLATE_IMA_NAME "ima" |
42 | #define IMA_TEMPLATE_IMA_FMT "d|n" | |
43 | ||
aa724fe1 RS |
44 | #define NR_BANKS(chip) ((chip != NULL) ? chip->nr_allocated_banks : 0) |
45 | ||
a756024e RS |
46 | /* current content of the policy */ |
47 | extern int ima_policy_flag; | |
48 | ||
4f2946aa TS |
49 | /* bitset of digests algorithms allowed in the setxattr hook */ |
50 | extern atomic_t ima_setxattr_allowed_hash_algorithms; | |
51 | ||
3323eec9 | 52 | /* set during initialization */ |
1624dc00 | 53 | extern int ima_hash_algo __ro_after_init; |
aa724fe1 | 54 | extern int ima_sha1_idx __ro_after_init; |
2592677c | 55 | extern int ima_hash_algo_idx __ro_after_init; |
aa724fe1 | 56 | extern int ima_extra_slots __ro_after_init; |
2fe5d6de | 57 | extern int ima_appraise; |
5c2a640a | 58 | extern struct tpm_chip *ima_tpm_chip; |
6cc7c266 | 59 | extern const char boot_aggregate_name[]; |
3323eec9 | 60 | |
23b57419 RS |
61 | /* IMA event related data */ |
62 | struct ima_event_data { | |
4de2f084 | 63 | struct ima_iint_cache *iint; |
23b57419 RS |
64 | struct file *file; |
65 | const unsigned char *filename; | |
66 | struct evm_ima_xattr_data *xattr_value; | |
67 | int xattr_len; | |
3878d505 | 68 | const struct modsig *modsig; |
8d94eb9b | 69 | const char *violation; |
86b4da8c PS |
70 | const void *buf; |
71 | int buf_len; | |
23b57419 RS |
72 | }; |
73 | ||
adf53a77 RS |
74 | /* IMA template field data definition */ |
75 | struct ima_field_data { | |
76 | u8 *data; | |
77 | u32 len; | |
78 | }; | |
79 | ||
80 | /* IMA template field definition */ | |
81 | struct ima_template_field { | |
82 | const char field_id[IMA_TEMPLATE_FIELD_ID_MAX_LEN]; | |
23b57419 RS |
83 | int (*field_init)(struct ima_event_data *event_data, |
84 | struct ima_field_data *field_data); | |
85 | void (*field_show)(struct seq_file *m, enum ima_show_type show, | |
86 | struct ima_field_data *field_data); | |
adf53a77 RS |
87 | }; |
88 | ||
89 | /* IMA template descriptor definition */ | |
90 | struct ima_template_desc { | |
3f23d624 | 91 | struct list_head list; |
adf53a77 RS |
92 | char *name; |
93 | char *fmt; | |
94 | int num_fields; | |
b2724d58 | 95 | const struct ima_template_field **fields; |
adf53a77 RS |
96 | }; |
97 | ||
3323eec9 | 98 | struct ima_template_entry { |
14b1da85 | 99 | int pcr; |
aa724fe1 | 100 | struct tpm_digest *digests; |
a71dc65d RS |
101 | struct ima_template_desc *template_desc; /* template descriptor */ |
102 | u32 template_data_len; | |
4739eeaf | 103 | struct ima_field_data template_data[]; /* template related data */ |
3323eec9 MZ |
104 | }; |
105 | ||
106 | struct ima_queue_entry { | |
107 | struct hlist_node hnext; /* place in hash collision list */ | |
108 | struct list_head later; /* place in ima_measurements list */ | |
109 | struct ima_template_entry *entry; | |
110 | }; | |
111 | extern struct list_head ima_measurements; /* list of all measurements */ | |
112 | ||
94c3aac5 MZ |
113 | /* Some details preceding the binary serialized measurement list */ |
114 | struct ima_kexec_hdr { | |
115 | u16 version; | |
116 | u16 _reserved0; | |
117 | u32 _reserved1; | |
118 | u64 buffer_size; | |
119 | u64 count; | |
120 | }; | |
121 | ||
4de2f084 RS |
122 | /* IMA iint action cache flags */ |
123 | #define IMA_MEASURE 0x00000001 | |
124 | #define IMA_MEASURED 0x00000002 | |
125 | #define IMA_APPRAISE 0x00000004 | |
126 | #define IMA_APPRAISED 0x00000008 | |
127 | /*#define IMA_COLLECT 0x00000010 do not use this flag */ | |
128 | #define IMA_COLLECTED 0x00000020 | |
129 | #define IMA_AUDIT 0x00000040 | |
130 | #define IMA_AUDITED 0x00000080 | |
131 | #define IMA_HASH 0x00000100 | |
132 | #define IMA_HASHED 0x00000200 | |
133 | ||
134 | /* IMA iint policy rule cache flags */ | |
135 | #define IMA_NONACTION_FLAGS 0xff000000 | |
136 | #define IMA_DIGSIG_REQUIRED 0x01000000 | |
137 | #define IMA_PERMIT_DIRECTIO 0x02000000 | |
138 | #define IMA_NEW_FILE 0x04000000 | |
139 | #define IMA_FAIL_UNVERIFIABLE_SIGS 0x10000000 | |
140 | #define IMA_MODSIG_ALLOWED 0x20000000 | |
141 | #define IMA_CHECK_BLACKLIST 0x40000000 | |
142 | #define IMA_VERITY_REQUIRED 0x80000000 | |
143 | ||
144 | #define IMA_DO_MASK (IMA_MEASURE | IMA_APPRAISE | IMA_AUDIT | \ | |
145 | IMA_HASH | IMA_APPRAISE_SUBMASK) | |
146 | #define IMA_DONE_MASK (IMA_MEASURED | IMA_APPRAISED | IMA_AUDITED | \ | |
147 | IMA_HASHED | IMA_COLLECTED | \ | |
148 | IMA_APPRAISED_SUBMASK) | |
149 | ||
150 | /* IMA iint subaction appraise cache flags */ | |
151 | #define IMA_FILE_APPRAISE 0x00001000 | |
152 | #define IMA_FILE_APPRAISED 0x00002000 | |
153 | #define IMA_MMAP_APPRAISE 0x00004000 | |
154 | #define IMA_MMAP_APPRAISED 0x00008000 | |
155 | #define IMA_BPRM_APPRAISE 0x00010000 | |
156 | #define IMA_BPRM_APPRAISED 0x00020000 | |
157 | #define IMA_READ_APPRAISE 0x00040000 | |
158 | #define IMA_READ_APPRAISED 0x00080000 | |
159 | #define IMA_CREDS_APPRAISE 0x00100000 | |
160 | #define IMA_CREDS_APPRAISED 0x00200000 | |
161 | #define IMA_APPRAISE_SUBMASK (IMA_FILE_APPRAISE | IMA_MMAP_APPRAISE | \ | |
162 | IMA_BPRM_APPRAISE | IMA_READ_APPRAISE | \ | |
163 | IMA_CREDS_APPRAISE) | |
164 | #define IMA_APPRAISED_SUBMASK (IMA_FILE_APPRAISED | IMA_MMAP_APPRAISED | \ | |
165 | IMA_BPRM_APPRAISED | IMA_READ_APPRAISED | \ | |
166 | IMA_CREDS_APPRAISED) | |
167 | ||
168 | /* IMA iint cache atomic_flags */ | |
169 | #define IMA_CHANGE_XATTR 0 | |
170 | #define IMA_UPDATE_XATTR 1 | |
171 | #define IMA_CHANGE_ATTR 2 | |
172 | #define IMA_DIGSIG 3 | |
173 | #define IMA_MUST_MEASURE 4 | |
174 | ||
175 | /* IMA integrity metadata associated with an inode */ | |
176 | struct ima_iint_cache { | |
177 | struct mutex mutex; /* protects: version, flags, digest */ | |
178 | u64 version; /* track inode changes */ | |
179 | unsigned long flags; | |
180 | unsigned long measured_pcrs; | |
181 | unsigned long atomic_flags; | |
182 | unsigned long real_ino; | |
183 | dev_t real_dev; | |
184 | enum integrity_status ima_file_status:4; | |
185 | enum integrity_status ima_mmap_status:4; | |
186 | enum integrity_status ima_bprm_status:4; | |
187 | enum integrity_status ima_read_status:4; | |
188 | enum integrity_status ima_creds_status:4; | |
189 | struct ima_digest_data *ima_hash; | |
190 | }; | |
191 | ||
192 | extern struct lsm_blob_sizes ima_blob_sizes; | |
193 | ||
194 | static inline struct ima_iint_cache * | |
195 | ima_inode_get_iint(const struct inode *inode) | |
196 | { | |
197 | struct ima_iint_cache **iint_sec; | |
198 | ||
199 | if (unlikely(!inode->i_security)) | |
200 | return NULL; | |
201 | ||
202 | iint_sec = inode->i_security + ima_blob_sizes.lbs_inode; | |
203 | return *iint_sec; | |
204 | } | |
205 | ||
206 | static inline void ima_inode_set_iint(const struct inode *inode, | |
207 | struct ima_iint_cache *iint) | |
208 | { | |
209 | struct ima_iint_cache **iint_sec; | |
210 | ||
211 | if (unlikely(!inode->i_security)) | |
212 | return; | |
213 | ||
214 | iint_sec = inode->i_security + ima_blob_sizes.lbs_inode; | |
215 | *iint_sec = iint; | |
216 | } | |
217 | ||
218 | struct ima_iint_cache *ima_iint_find(struct inode *inode); | |
219 | struct ima_iint_cache *ima_inode_get(struct inode *inode); | |
220 | void ima_inode_free(struct inode *inode); | |
221 | void __init ima_iintcache_init(void); | |
222 | ||
29d3c1c8 MG |
223 | extern const int read_idmap[]; |
224 | ||
94c3aac5 MZ |
225 | #ifdef CONFIG_HAVE_IMA_KEXEC |
226 | void ima_load_kexec_buffer(void); | |
227 | #else | |
228 | static inline void ima_load_kexec_buffer(void) {} | |
229 | #endif /* CONFIG_HAVE_IMA_KEXEC */ | |
230 | ||
cd3cec0a RS |
231 | #ifdef CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS |
232 | void ima_post_key_create_or_update(struct key *keyring, struct key *key, | |
233 | const void *payload, size_t plen, | |
234 | unsigned long flags, bool create); | |
235 | #endif | |
236 | ||
d68a6fe9 MZ |
237 | /* |
238 | * The default binary_runtime_measurements list format is defined as the | |
239 | * platform native format. The canonical format is defined as little-endian. | |
240 | */ | |
241 | extern bool ima_canonical_fmt; | |
242 | ||
3323eec9 | 243 | /* Internal IMA function definitions */ |
3323eec9 | 244 | int ima_init(void); |
bab73937 | 245 | int ima_fs_init(void); |
3323eec9 | 246 | int ima_add_template_entry(struct ima_template_entry *entry, int violation, |
9803d413 RS |
247 | const char *op, struct inode *inode, |
248 | const unsigned char *filename); | |
c7c8bb23 | 249 | int ima_calc_file_hash(struct file *file, struct ima_digest_data *hash); |
11d7646d DK |
250 | int ima_calc_buffer_hash(const void *buf, loff_t len, |
251 | struct ima_digest_data *hash); | |
b6f8f16f | 252 | int ima_calc_field_array_hash(struct ima_field_data *field_data, |
7ca79645 | 253 | struct ima_template_entry *entry); |
6cc7c266 | 254 | int ima_calc_boot_aggregate(struct ima_digest_data *hash); |
7d802a22 | 255 | void ima_add_violation(struct file *file, const unsigned char *filename, |
4de2f084 RS |
256 | struct ima_iint_cache *iint, const char *op, |
257 | const char *cause); | |
76bb28f6 | 258 | int ima_init_crypto(void); |
3ce1217d | 259 | void ima_putc(struct seq_file *m, void *data, int datalen); |
45b26133 | 260 | void ima_print_digest(struct seq_file *m, u8 *digest, u32 size); |
19453ce0 MG |
261 | int template_desc_init_fields(const char *template_fmt, |
262 | const struct ima_template_field ***fields, | |
263 | int *num_fields); | |
a71dc65d | 264 | struct ima_template_desc *ima_template_desc_current(void); |
dea87d08 | 265 | struct ima_template_desc *ima_template_desc_buf(void); |
19453ce0 | 266 | struct ima_template_desc *lookup_template_desc(const char *name); |
e5092255 | 267 | bool ima_template_has_modsig(const struct ima_template_desc *ima_template); |
94c3aac5 MZ |
268 | int ima_restore_measurement_entry(struct ima_template_entry *entry); |
269 | int ima_restore_measurement_list(loff_t bufsize, void *buf); | |
7b8589cc | 270 | int ima_measurements_show(struct seq_file *m, void *v); |
d158847a | 271 | unsigned long ima_get_binary_runtime_size(void); |
a71dc65d | 272 | int ima_init_template(void); |
3f23d624 | 273 | void ima_init_template_list(void); |
0b6cf6b9 | 274 | int __init ima_init_digests(void); |
b1694245 JK |
275 | int ima_lsm_policy_change(struct notifier_block *nb, unsigned long event, |
276 | void *lsm_data); | |
3323eec9 MZ |
277 | |
278 | /* | |
279 | * used to protect h_table and sha_table | |
280 | */ | |
281 | extern spinlock_t ima_queue_lock; | |
282 | ||
283 | struct ima_h_table { | |
284 | atomic_long_t len; /* number of stored measurements in the list */ | |
285 | atomic_long_t violations; | |
286 | struct hlist_head queue[IMA_MEASURE_HTABLE_SIZE]; | |
287 | }; | |
288 | extern struct ima_h_table ima_htable; | |
289 | ||
1129d31b | 290 | static inline unsigned int ima_hash_key(u8 *digest) |
3323eec9 | 291 | { |
1129d31b KS |
292 | /* there is no point in taking a hash of part of a digest */ |
293 | return (digest[0] | digest[1] << 8) % IMA_MEASURE_HTABLE_SIZE; | |
3323eec9 MZ |
294 | } |
295 | ||
34e980bb LR |
296 | #define __ima_hooks(hook) \ |
297 | hook(NONE, none) \ | |
298 | hook(FILE_CHECK, file) \ | |
299 | hook(MMAP_CHECK, mmap) \ | |
4958db32 | 300 | hook(MMAP_CHECK_REQPROT, mmap_reqprot) \ |
34e980bb LR |
301 | hook(BPRM_CHECK, bprm) \ |
302 | hook(CREDS_CHECK, creds) \ | |
303 | hook(POST_SETATTR, post_setattr) \ | |
304 | hook(MODULE_CHECK, module) \ | |
305 | hook(FIRMWARE_CHECK, firmware) \ | |
306 | hook(KEXEC_KERNEL_CHECK, kexec_kernel) \ | |
307 | hook(KEXEC_INITRAMFS_CHECK, kexec_initramfs) \ | |
308 | hook(POLICY_CHECK, policy) \ | |
309 | hook(KEXEC_CMDLINE, kexec_cmdline) \ | |
310 | hook(KEY_CHECK, key) \ | |
d6e64501 | 311 | hook(CRITICAL_DATA, critical_data) \ |
4f2946aa | 312 | hook(SETXATTR_CHECK, setxattr_check) \ |
34e980bb LR |
313 | hook(MAX_CHECK, none) |
314 | ||
315 | #define __ima_hook_enumify(ENUM, str) ENUM, | |
316 | #define __ima_stringify(arg) (#arg) | |
317 | #define __ima_hook_measuring_stringify(ENUM, str) \ | |
318 | (__ima_stringify(measuring_ ##str)), | |
2663218b | 319 | |
4ad87a3d | 320 | enum ima_hooks { |
2663218b | 321 | __ima_hooks(__ima_hook_enumify) |
4ad87a3d MZ |
322 | }; |
323 | ||
34e980bb LR |
324 | static const char * const ima_hooks_measure_str[] = { |
325 | __ima_hooks(__ima_hook_measuring_stringify) | |
326 | }; | |
327 | ||
328 | static inline const char *func_measure_str(enum ima_hooks func) | |
329 | { | |
330 | if (func >= MAX_CHECK) | |
331 | return ima_hooks_measure_str[NONE]; | |
332 | ||
333 | return ima_hooks_measure_str[func]; | |
334 | } | |
335 | ||
39b07096 TJB |
336 | extern const char *const func_tokens[]; |
337 | ||
338 | struct modsig; | |
339 | ||
9f81a2ed LR |
340 | #ifdef CONFIG_IMA_QUEUE_EARLY_BOOT_KEYS |
341 | /* | |
342 | * To track keys that need to be measured. | |
343 | */ | |
344 | struct ima_key_entry { | |
345 | struct list_head list; | |
346 | void *payload; | |
347 | size_t payload_len; | |
348 | char *keyring_name; | |
349 | }; | |
5b3014b9 | 350 | void ima_init_key_queue(void); |
9f81a2ed LR |
351 | bool ima_should_queue_key(void); |
352 | bool ima_queue_key(struct key *keyring, const void *payload, | |
353 | size_t payload_len); | |
354 | void ima_process_queued_keys(void); | |
355 | #else | |
5b3014b9 | 356 | static inline void ima_init_key_queue(void) {} |
9f81a2ed LR |
357 | static inline bool ima_should_queue_key(void) { return false; } |
358 | static inline bool ima_queue_key(struct key *keyring, | |
359 | const void *payload, | |
360 | size_t payload_len) { return false; } | |
361 | static inline void ima_process_queued_keys(void) {} | |
362 | #endif /* CONFIG_IMA_QUEUE_EARLY_BOOT_KEYS */ | |
363 | ||
3323eec9 | 364 | /* LIM API function definitions */ |
39f60c1c | 365 | int ima_get_action(struct mnt_idmap *idmap, struct inode *inode, |
a2d2329e CB |
366 | const struct cred *cred, u32 secid, int mask, |
367 | enum ima_hooks func, int *pcr, | |
e9085e0a | 368 | struct ima_template_desc **template_desc, |
1624dc00 | 369 | const char *func_data, unsigned int *allowed_algos); |
4ad87a3d | 370 | int ima_must_measure(struct inode *inode, int mask, enum ima_hooks func); |
4de2f084 RS |
371 | int ima_collect_measurement(struct ima_iint_cache *iint, struct file *file, |
372 | void *buf, loff_t size, enum hash_algo algo, | |
373 | struct modsig *modsig); | |
374 | void ima_store_measurement(struct ima_iint_cache *iint, struct file *file, | |
bcbc9b0c MZ |
375 | const unsigned char *filename, |
376 | struct evm_ima_xattr_data *xattr_value, | |
3878d505 | 377 | int xattr_len, const struct modsig *modsig, int pcr, |
19453ce0 | 378 | struct ima_template_desc *template_desc); |
39f60c1c | 379 | int process_buffer_measurement(struct mnt_idmap *idmap, |
ce5bb5a8 RS |
380 | struct inode *inode, const void *buf, int size, |
381 | const char *eventname, enum ima_hooks func, | |
382 | int pcr, const char *func_data, | |
ca3c9bdb | 383 | bool buf_hash, u8 *digest, size_t digest_len); |
4de2f084 | 384 | void ima_audit_measurement(struct ima_iint_cache *iint, |
e7c568e0 | 385 | const unsigned char *filename); |
23b57419 | 386 | int ima_alloc_init_template(struct ima_event_data *event_data, |
19453ce0 MG |
387 | struct ima_template_entry **entry, |
388 | struct ima_template_desc *template_desc); | |
3323eec9 | 389 | int ima_store_template(struct ima_template_entry *entry, int violation, |
14b1da85 ER |
390 | struct inode *inode, |
391 | const unsigned char *filename, int pcr); | |
a7ed7c60 | 392 | void ima_free_template_entry(struct ima_template_entry *entry); |
bc15ed66 | 393 | const char *ima_d_path(const struct path *path, char **pathbuf, char *filename); |
3323eec9 | 394 | |
3323eec9 | 395 | /* IMA policy related functions */ |
39f60c1c | 396 | int ima_match_policy(struct mnt_idmap *idmap, struct inode *inode, |
a2d2329e CB |
397 | const struct cred *cred, u32 secid, enum ima_hooks func, |
398 | int mask, int flags, int *pcr, | |
e9085e0a | 399 | struct ima_template_desc **template_desc, |
1624dc00 | 400 | const char *func_data, unsigned int *allowed_algos); |
3323eec9 MZ |
401 | void ima_init_policy(void); |
402 | void ima_update_policy(void); | |
4f2946aa | 403 | void ima_update_policy_flags(void); |
6ccd0456 | 404 | ssize_t ima_parse_add_rule(char *); |
4af4662f | 405 | void ima_delete_rules(void); |
0112721d | 406 | int ima_check_policy(void); |
80eae209 PM |
407 | void *ima_policy_start(struct seq_file *m, loff_t *pos); |
408 | void *ima_policy_next(struct seq_file *m, void *v, loff_t *pos); | |
409 | void ima_policy_stop(struct seq_file *m, void *v); | |
410 | int ima_policy_show(struct seq_file *m, void *v); | |
4af4662f | 411 | |
2fe5d6de MZ |
412 | /* Appraise integrity measurements */ |
413 | #define IMA_APPRAISE_ENFORCE 0x01 | |
414 | #define IMA_APPRAISE_FIX 0x02 | |
2faa6ef3 DK |
415 | #define IMA_APPRAISE_LOG 0x04 |
416 | #define IMA_APPRAISE_MODULES 0x08 | |
417 | #define IMA_APPRAISE_FIRMWARE 0x10 | |
19f8a847 | 418 | #define IMA_APPRAISE_POLICY 0x20 |
16c267aa | 419 | #define IMA_APPRAISE_KEXEC 0x40 |
2fe5d6de MZ |
420 | |
421 | #ifdef CONFIG_IMA_APPRAISE | |
4de2f084 | 422 | int ima_check_blacklist(struct ima_iint_cache *iint, |
273df864 | 423 | const struct modsig *modsig, int pcr); |
4de2f084 | 424 | int ima_appraise_measurement(enum ima_hooks func, struct ima_iint_cache *iint, |
d3634d0f DK |
425 | struct file *file, const unsigned char *filename, |
426 | struct evm_ima_xattr_data *xattr_value, | |
39b07096 | 427 | int xattr_len, const struct modsig *modsig); |
39f60c1c | 428 | int ima_must_appraise(struct mnt_idmap *idmap, struct inode *inode, |
a2d2329e | 429 | int mask, enum ima_hooks func); |
4de2f084 RS |
430 | void ima_update_xattr(struct ima_iint_cache *iint, struct file *file); |
431 | enum integrity_status ima_get_cache_status(struct ima_iint_cache *iint, | |
4ad87a3d | 432 | enum ima_hooks func); |
50f742dd | 433 | enum hash_algo ima_get_hash_algo(const struct evm_ima_xattr_data *xattr_value, |
1525b06d | 434 | int xattr_len); |
d3634d0f | 435 | int ima_read_xattr(struct dentry *dentry, |
f6fbd8cb | 436 | struct evm_ima_xattr_data **xattr_value, int xattr_len); |
84594c9e | 437 | void __init init_ima_appraise_lsm(const struct lsm_id *lsmid); |
2fe5d6de MZ |
438 | |
439 | #else | |
4de2f084 | 440 | static inline int ima_check_blacklist(struct ima_iint_cache *iint, |
273df864 NJ |
441 | const struct modsig *modsig, int pcr) |
442 | { | |
443 | return 0; | |
444 | } | |
445 | ||
4ad87a3d | 446 | static inline int ima_appraise_measurement(enum ima_hooks func, |
4de2f084 | 447 | struct ima_iint_cache *iint, |
2fe5d6de | 448 | struct file *file, |
d3634d0f DK |
449 | const unsigned char *filename, |
450 | struct evm_ima_xattr_data *xattr_value, | |
39b07096 TJB |
451 | int xattr_len, |
452 | const struct modsig *modsig) | |
2fe5d6de MZ |
453 | { |
454 | return INTEGRITY_UNKNOWN; | |
455 | } | |
456 | ||
39f60c1c | 457 | static inline int ima_must_appraise(struct mnt_idmap *idmap, |
a2d2329e | 458 | struct inode *inode, int mask, |
d26e1936 | 459 | enum ima_hooks func) |
2fe5d6de MZ |
460 | { |
461 | return 0; | |
462 | } | |
463 | ||
4de2f084 | 464 | static inline void ima_update_xattr(struct ima_iint_cache *iint, |
2fe5d6de MZ |
465 | struct file *file) |
466 | { | |
467 | } | |
d79d72e0 | 468 | |
4de2f084 RS |
469 | static inline enum integrity_status |
470 | ima_get_cache_status(struct ima_iint_cache *iint, enum ima_hooks func) | |
d79d72e0 MZ |
471 | { |
472 | return INTEGRITY_UNKNOWN; | |
473 | } | |
d3634d0f | 474 | |
1525b06d DK |
475 | static inline enum hash_algo |
476 | ima_get_hash_algo(struct evm_ima_xattr_data *xattr_value, int xattr_len) | |
d3634d0f | 477 | { |
1525b06d | 478 | return ima_hash_algo; |
d3634d0f DK |
479 | } |
480 | ||
481 | static inline int ima_read_xattr(struct dentry *dentry, | |
f6fbd8cb PM |
482 | struct evm_ima_xattr_data **xattr_value, |
483 | int xattr_len) | |
d3634d0f DK |
484 | { |
485 | return 0; | |
486 | } | |
487 | ||
84594c9e RS |
488 | static inline void __init init_ima_appraise_lsm(const struct lsm_id *lsmid) |
489 | { | |
490 | } | |
491 | ||
bb543e39 | 492 | #endif /* CONFIG_IMA_APPRAISE */ |
2fe5d6de | 493 | |
9044d627 | 494 | #ifdef CONFIG_IMA_APPRAISE_MODSIG |
39b07096 TJB |
495 | int ima_read_modsig(enum ima_hooks func, const void *buf, loff_t buf_len, |
496 | struct modsig **modsig); | |
15588227 | 497 | void ima_collect_modsig(struct modsig *modsig, const void *buf, loff_t size); |
3878d505 TJB |
498 | int ima_get_modsig_digest(const struct modsig *modsig, enum hash_algo *algo, |
499 | const u8 **digest, u32 *digest_size); | |
500 | int ima_get_raw_modsig(const struct modsig *modsig, const void **data, | |
501 | u32 *data_len); | |
39b07096 | 502 | void ima_free_modsig(struct modsig *modsig); |
9044d627 | 503 | #else |
39b07096 TJB |
504 | static inline int ima_read_modsig(enum ima_hooks func, const void *buf, |
505 | loff_t buf_len, struct modsig **modsig) | |
506 | { | |
507 | return -EOPNOTSUPP; | |
508 | } | |
509 | ||
15588227 TJB |
510 | static inline void ima_collect_modsig(struct modsig *modsig, const void *buf, |
511 | loff_t size) | |
512 | { | |
513 | } | |
514 | ||
3878d505 TJB |
515 | static inline int ima_get_modsig_digest(const struct modsig *modsig, |
516 | enum hash_algo *algo, const u8 **digest, | |
517 | u32 *digest_size) | |
518 | { | |
519 | return -EOPNOTSUPP; | |
520 | } | |
521 | ||
522 | static inline int ima_get_raw_modsig(const struct modsig *modsig, | |
523 | const void **data, u32 *data_len) | |
524 | { | |
525 | return -EOPNOTSUPP; | |
526 | } | |
527 | ||
39b07096 TJB |
528 | static inline void ima_free_modsig(struct modsig *modsig) |
529 | { | |
530 | } | |
9044d627 TJB |
531 | #endif /* CONFIG_IMA_APPRAISE_MODSIG */ |
532 | ||
4af4662f MZ |
533 | /* LSM based policy rules require audit */ |
534 | #ifdef CONFIG_IMA_LSM_RULES | |
535 | ||
b8867eed TH |
536 | #define ima_filter_rule_init security_audit_rule_init |
537 | #define ima_filter_rule_free security_audit_rule_free | |
538 | #define ima_filter_rule_match security_audit_rule_match | |
4af4662f MZ |
539 | |
540 | #else | |
541 | ||
b8867eed TH |
542 | static inline int ima_filter_rule_init(u32 field, u32 op, char *rulestr, |
543 | void **lsmrule) | |
4af4662f MZ |
544 | { |
545 | return -EINVAL; | |
546 | } | |
547 | ||
b8867eed | 548 | static inline void ima_filter_rule_free(void *lsmrule) |
9ff8a616 TH |
549 | { |
550 | } | |
551 | ||
b8867eed TH |
552 | static inline int ima_filter_rule_match(u32 secid, u32 field, u32 op, |
553 | void *lsmrule) | |
4af4662f MZ |
554 | { |
555 | return -EINVAL; | |
556 | } | |
5d659f28 | 557 | #endif /* CONFIG_IMA_LSM_RULES */ |
80eae209 PM |
558 | |
559 | #ifdef CONFIG_IMA_READ_POLICY | |
560 | #define POLICY_FILE_FLAGS (S_IWUSR | S_IRUSR) | |
561 | #else | |
562 | #define POLICY_FILE_FLAGS S_IWUSR | |
5d659f28 | 563 | #endif /* CONFIG_IMA_READ_POLICY */ |
80eae209 PM |
564 | |
565 | #endif /* __LINUX_IMA_H */ |