1 /* SPDX-License-Identifier: GPL-2.0-only */
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 *
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>
18 #include <linux/fs.h>
19 #include <linux/security.h>
20 #include <linux/hash.h>
21 #include <linux/tpm.h>
22 #include <linux/audit.h>
23 #include <crypto/hash_info.h>
24
25 #include "../integrity.h"
26
27 enum ima_show_type { IMA_SHOW_BINARY, IMA_SHOW_BINARY_NO_FIELD_LEN,
28 IMA_SHOW_BINARY_OLD_STRING_FMT, IMA_SHOW_ASCII };
29 enum tpm_pcrs { TPM_PCR0 = 0, TPM_PCR8 = 8, TPM_PCR10 = 10 };
30
31 /* digest size for IMA, fits SHA1 or MD5 */
32 #define IMA_DIGEST_SIZE SHA1_DIGEST_SIZE
33 #define IMA_EVENT_NAME_LEN_MAX 255
34
35 #define IMA_HASH_BITS 10
36 #define IMA_MEASURE_HTABLE_SIZE (1 << IMA_HASH_BITS)
37
38 #define IMA_TEMPLATE_FIELD_ID_MAX_LEN 16
39 #define IMA_TEMPLATE_NUM_FIELDS_MAX 15
40
41 #define IMA_TEMPLATE_IMA_NAME "ima"
42 #define IMA_TEMPLATE_IMA_FMT "d|n"
43
44 #define NR_BANKS(chip) ((chip != NULL) ? chip->nr_allocated_banks : 0)
45
46 /* current content of the policy */
47 extern int ima_policy_flag;
48
49 /* bitset of digests algorithms allowed in the setxattr hook */
50 extern atomic_t ima_setxattr_allowed_hash_algorithms;
51
52 /* IMA hash algorithm description */
53 struct ima_algo_desc {
54 struct crypto_shash *tfm;
55 enum hash_algo algo;
56 };
57
58 /* set during initialization */
59 extern int ima_hash_algo __ro_after_init;
60 extern int ima_sha1_idx __ro_after_init;
61 extern int ima_hash_algo_idx __ro_after_init;
62 extern int ima_extra_slots __ro_after_init;
63 extern struct ima_algo_desc *ima_algo_array __ro_after_init;
64
65 extern int ima_appraise;
66 extern struct tpm_chip *ima_tpm_chip;
67 extern const char boot_aggregate_name[];
68
69 /* IMA event related data */
70 struct ima_event_data {
71 struct ima_iint_cache *iint;
72 struct file *file;
73 const unsigned char *filename;
74 struct evm_ima_xattr_data *xattr_value;
75 int xattr_len;
76 const struct modsig *modsig;
77 const char *violation;
78 const void *buf;
79 int buf_len;
80 };
81
82 /* IMA template field data definition */
83 struct ima_field_data {
84 u8 *data;
85 u32 len;
86 };
87
88 /* IMA template field definition */
89 struct ima_template_field {
90 const char field_id[IMA_TEMPLATE_FIELD_ID_MAX_LEN];
91 int (*field_init)(struct ima_event_data *event_data,
92 struct ima_field_data *field_data);
93 void (*field_show)(struct seq_file *m, enum ima_show_type show,
94 struct ima_field_data *field_data);
95 };
96
97 /* IMA template descriptor definition */
98 struct ima_template_desc {
99 struct list_head list;
100 char *name;
101 char *fmt;
102 int num_fields;
103 const struct ima_template_field **fields;
104 };
105
106 struct ima_template_entry {
107 int pcr;
108 struct tpm_digest *digests;
109 struct ima_template_desc *template_desc; /* template descriptor */
110 u32 template_data_len;
111 struct ima_field_data template_data[]; /* template related data */
112 };
113
114 struct ima_queue_entry {
115 struct hlist_node hnext; /* place in hash collision list */
116 struct list_head later; /* place in ima_measurements list */
117 struct ima_template_entry *entry;
118 };
119 extern struct list_head ima_measurements; /* list of all measurements */
120
121 /* Some details preceding the binary serialized measurement list */
122 struct ima_kexec_hdr {
123 u16 version;
124 u16 _reserved0;
125 u32 _reserved1;
126 u64 buffer_size;
127 u64 count;
128 };
129
130 /* IMA iint action cache flags */
131 #define IMA_MEASURE 0x00000001
132 #define IMA_MEASURED 0x00000002
133 #define IMA_APPRAISE 0x00000004
134 #define IMA_APPRAISED 0x00000008
135 /*#define IMA_COLLECT 0x00000010 do not use this flag */
136 #define IMA_COLLECTED 0x00000020
137 #define IMA_AUDIT 0x00000040
138 #define IMA_AUDITED 0x00000080
139 #define IMA_HASH 0x00000100
140 #define IMA_HASHED 0x00000200
141
142 /* IMA iint policy rule cache flags */
143 #define IMA_NONACTION_FLAGS 0xff000000
144 #define IMA_DIGSIG_REQUIRED 0x01000000
145 #define IMA_PERMIT_DIRECTIO 0x02000000
146 #define IMA_NEW_FILE 0x04000000
147 #define IMA_FAIL_UNVERIFIABLE_SIGS 0x10000000
148 #define IMA_MODSIG_ALLOWED 0x20000000
149 #define IMA_CHECK_BLACKLIST 0x40000000
150 #define IMA_VERITY_REQUIRED 0x80000000
151
152 #define IMA_DO_MASK (IMA_MEASURE | IMA_APPRAISE | IMA_AUDIT | \
153 IMA_HASH | IMA_APPRAISE_SUBMASK)
154 #define IMA_DONE_MASK (IMA_MEASURED | IMA_APPRAISED | IMA_AUDITED | \
155 IMA_HASHED | IMA_COLLECTED | \
156 IMA_APPRAISED_SUBMASK)
157
158 /* IMA iint subaction appraise cache flags */
159 #define IMA_FILE_APPRAISE 0x00001000
160 #define IMA_FILE_APPRAISED 0x00002000
161 #define IMA_MMAP_APPRAISE 0x00004000
162 #define IMA_MMAP_APPRAISED 0x00008000
163 #define IMA_BPRM_APPRAISE 0x00010000
164 #define IMA_BPRM_APPRAISED 0x00020000
165 #define IMA_READ_APPRAISE 0x00040000
166 #define IMA_READ_APPRAISED 0x00080000
167 #define IMA_CREDS_APPRAISE 0x00100000
168 #define IMA_CREDS_APPRAISED 0x00200000
169 #define IMA_APPRAISE_SUBMASK (IMA_FILE_APPRAISE | IMA_MMAP_APPRAISE | \
170 IMA_BPRM_APPRAISE | IMA_READ_APPRAISE | \
171 IMA_CREDS_APPRAISE)
172 #define IMA_APPRAISED_SUBMASK (IMA_FILE_APPRAISED | IMA_MMAP_APPRAISED | \
173 IMA_BPRM_APPRAISED | IMA_READ_APPRAISED | \
174 IMA_CREDS_APPRAISED)
175
176 /* IMA iint cache atomic_flags */
177 #define IMA_CHANGE_XATTR 0
178 #define IMA_UPDATE_XATTR 1
179 #define IMA_CHANGE_ATTR 2
180 #define IMA_DIGSIG 3
181 #define IMA_MUST_MEASURE 4
182
183 /* IMA integrity metadata associated with an inode */
184 struct ima_iint_cache {
185 struct mutex mutex; /* protects: version, flags, digest */
186 struct integrity_inode_attributes real_inode;
187 unsigned long flags;
188 unsigned long measured_pcrs;
189 unsigned long atomic_flags;
190 enum integrity_status ima_file_status:4;
191 enum integrity_status ima_mmap_status:4;
192 enum integrity_status ima_bprm_status:4;
193 enum integrity_status ima_read_status:4;
194 enum integrity_status ima_creds_status:4;
195 struct ima_digest_data *ima_hash;
196 };
197
198 extern struct lsm_blob_sizes ima_blob_sizes;
199
200 static inline struct ima_iint_cache *
ima_inode_get_iint(const struct inode * inode)201 ima_inode_get_iint(const struct inode *inode)
202 {
203 struct ima_iint_cache **iint_sec;
204
205 if (unlikely(!inode->i_security))
206 return NULL;
207
208 iint_sec = inode->i_security + ima_blob_sizes.lbs_inode;
209 return *iint_sec;
210 }
211
ima_inode_set_iint(const struct inode * inode,struct ima_iint_cache * iint)212 static inline void ima_inode_set_iint(const struct inode *inode,
213 struct ima_iint_cache *iint)
214 {
215 struct ima_iint_cache **iint_sec;
216
217 if (unlikely(!inode->i_security))
218 return;
219
220 iint_sec = inode->i_security + ima_blob_sizes.lbs_inode;
221 *iint_sec = iint;
222 }
223
224 struct ima_iint_cache *ima_iint_find(struct inode *inode);
225 struct ima_iint_cache *ima_inode_get(struct inode *inode);
226 void ima_inode_free_rcu(void *inode_security);
227 void __init ima_iintcache_init(void);
228
229 extern const int read_idmap[];
230
231 #ifdef CONFIG_HAVE_IMA_KEXEC
232 void ima_load_kexec_buffer(void);
233 #else
ima_load_kexec_buffer(void)234 static inline void ima_load_kexec_buffer(void) {}
235 #endif /* CONFIG_HAVE_IMA_KEXEC */
236
237 #ifdef CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS
238 void ima_post_key_create_or_update(struct key *keyring, struct key *key,
239 const void *payload, size_t plen,
240 unsigned long flags, bool create);
241 #endif
242
243 /*
244 * The default binary_runtime_measurements list format is defined as the
245 * platform native format. The canonical format is defined as little-endian.
246 */
247 extern bool ima_canonical_fmt;
248
249 /* Internal IMA function definitions */
250 int ima_init(void);
251 int ima_fs_init(void);
252 int ima_add_template_entry(struct ima_template_entry *entry, int violation,
253 const char *op, struct inode *inode,
254 const unsigned char *filename);
255 int ima_calc_file_hash(struct file *file, struct ima_digest_data *hash);
256 int ima_calc_buffer_hash(const void *buf, loff_t len,
257 struct ima_digest_data *hash);
258 int ima_calc_field_array_hash(struct ima_field_data *field_data,
259 struct ima_template_entry *entry);
260 int ima_calc_boot_aggregate(struct ima_digest_data *hash);
261 void ima_add_violation(struct file *file, const unsigned char *filename,
262 struct ima_iint_cache *iint, const char *op,
263 const char *cause);
264 int ima_init_crypto(void);
265 void ima_putc(struct seq_file *m, void *data, int datalen);
266 void ima_print_digest(struct seq_file *m, u8 *digest, u32 size);
267 int template_desc_init_fields(const char *template_fmt,
268 const struct ima_template_field ***fields,
269 int *num_fields);
270 struct ima_template_desc *ima_template_desc_current(void);
271 struct ima_template_desc *ima_template_desc_buf(void);
272 struct ima_template_desc *lookup_template_desc(const char *name);
273 bool ima_template_has_modsig(const struct ima_template_desc *ima_template);
274 int ima_restore_measurement_entry(struct ima_template_entry *entry);
275 int ima_restore_measurement_list(loff_t bufsize, void *buf);
276 int ima_measurements_show(struct seq_file *m, void *v);
277 unsigned long ima_get_binary_runtime_size(void);
278 int ima_init_template(void);
279 void ima_init_template_list(void);
280 int __init ima_init_digests(void);
281 int ima_lsm_policy_change(struct notifier_block *nb, unsigned long event,
282 void *lsm_data);
283
284 /*
285 * used to protect h_table and sha_table
286 */
287 extern spinlock_t ima_queue_lock;
288
289 struct ima_h_table {
290 atomic_long_t len; /* number of stored measurements in the list */
291 atomic_long_t violations;
292 struct hlist_head queue[IMA_MEASURE_HTABLE_SIZE];
293 };
294 extern struct ima_h_table ima_htable;
295
ima_hash_key(u8 * digest)296 static inline unsigned int ima_hash_key(u8 *digest)
297 {
298 /* there is no point in taking a hash of part of a digest */
299 return (digest[0] | digest[1] << 8) % IMA_MEASURE_HTABLE_SIZE;
300 }
301
302 #define __ima_hooks(hook) \
303 hook(NONE, none) \
304 hook(FILE_CHECK, file) \
305 hook(MMAP_CHECK, mmap) \
306 hook(MMAP_CHECK_REQPROT, mmap_reqprot) \
307 hook(BPRM_CHECK, bprm) \
308 hook(CREDS_CHECK, creds) \
309 hook(POST_SETATTR, post_setattr) \
310 hook(MODULE_CHECK, module) \
311 hook(FIRMWARE_CHECK, firmware) \
312 hook(KEXEC_KERNEL_CHECK, kexec_kernel) \
313 hook(KEXEC_INITRAMFS_CHECK, kexec_initramfs) \
314 hook(POLICY_CHECK, policy) \
315 hook(KEXEC_CMDLINE, kexec_cmdline) \
316 hook(KEY_CHECK, key) \
317 hook(CRITICAL_DATA, critical_data) \
318 hook(SETXATTR_CHECK, setxattr_check) \
319 hook(MAX_CHECK, none)
320
321 #define __ima_hook_enumify(ENUM, str) ENUM,
322 #define __ima_stringify(arg) (#arg)
323 #define __ima_hook_measuring_stringify(ENUM, str) \
324 (__ima_stringify(measuring_ ##str)),
325
326 enum ima_hooks {
327 __ima_hooks(__ima_hook_enumify)
328 };
329
330 static const char * const ima_hooks_measure_str[] = {
331 __ima_hooks(__ima_hook_measuring_stringify)
332 };
333
func_measure_str(enum ima_hooks func)334 static inline const char *func_measure_str(enum ima_hooks func)
335 {
336 if (func >= MAX_CHECK)
337 return ima_hooks_measure_str[NONE];
338
339 return ima_hooks_measure_str[func];
340 }
341
342 extern const char *const func_tokens[];
343
344 struct modsig;
345
346 #ifdef CONFIG_IMA_QUEUE_EARLY_BOOT_KEYS
347 /*
348 * To track keys that need to be measured.
349 */
350 struct ima_key_entry {
351 struct list_head list;
352 void *payload;
353 size_t payload_len;
354 char *keyring_name;
355 };
356 void ima_init_key_queue(void);
357 bool ima_should_queue_key(void);
358 bool ima_queue_key(struct key *keyring, const void *payload,
359 size_t payload_len);
360 void ima_process_queued_keys(void);
361 #else
ima_init_key_queue(void)362 static inline void ima_init_key_queue(void) {}
ima_should_queue_key(void)363 static inline bool ima_should_queue_key(void) { return false; }
ima_queue_key(struct key * keyring,const void * payload,size_t payload_len)364 static inline bool ima_queue_key(struct key *keyring,
365 const void *payload,
366 size_t payload_len) { return false; }
ima_process_queued_keys(void)367 static inline void ima_process_queued_keys(void) {}
368 #endif /* CONFIG_IMA_QUEUE_EARLY_BOOT_KEYS */
369
370 /* LIM API function definitions */
371 int ima_get_action(struct mnt_idmap *idmap, struct inode *inode,
372 const struct cred *cred, u32 secid, int mask,
373 enum ima_hooks func, int *pcr,
374 struct ima_template_desc **template_desc,
375 const char *func_data, unsigned int *allowed_algos);
376 int ima_must_measure(struct inode *inode, int mask, enum ima_hooks func);
377 int ima_collect_measurement(struct ima_iint_cache *iint, struct file *file,
378 void *buf, loff_t size, enum hash_algo algo,
379 struct modsig *modsig);
380 void ima_store_measurement(struct ima_iint_cache *iint, struct file *file,
381 const unsigned char *filename,
382 struct evm_ima_xattr_data *xattr_value,
383 int xattr_len, const struct modsig *modsig, int pcr,
384 struct ima_template_desc *template_desc);
385 int process_buffer_measurement(struct mnt_idmap *idmap,
386 struct inode *inode, const void *buf, int size,
387 const char *eventname, enum ima_hooks func,
388 int pcr, const char *func_data,
389 bool buf_hash, u8 *digest, size_t digest_len);
390 void ima_audit_measurement(struct ima_iint_cache *iint,
391 const unsigned char *filename);
392 int ima_alloc_init_template(struct ima_event_data *event_data,
393 struct ima_template_entry **entry,
394 struct ima_template_desc *template_desc);
395 int ima_store_template(struct ima_template_entry *entry, int violation,
396 struct inode *inode,
397 const unsigned char *filename, int pcr);
398 void ima_free_template_entry(struct ima_template_entry *entry);
399 const char *ima_d_path(const struct path *path, char **pathbuf, char *filename);
400
401 /* IMA policy related functions */
402 int ima_match_policy(struct mnt_idmap *idmap, struct inode *inode,
403 const struct cred *cred, u32 secid, enum ima_hooks func,
404 int mask, int flags, int *pcr,
405 struct ima_template_desc **template_desc,
406 const char *func_data, unsigned int *allowed_algos);
407 void ima_init_policy(void);
408 void ima_update_policy(void);
409 void ima_update_policy_flags(void);
410 ssize_t ima_parse_add_rule(char *);
411 void ima_delete_rules(void);
412 int ima_check_policy(void);
413 void *ima_policy_start(struct seq_file *m, loff_t *pos);
414 void *ima_policy_next(struct seq_file *m, void *v, loff_t *pos);
415 void ima_policy_stop(struct seq_file *m, void *v);
416 int ima_policy_show(struct seq_file *m, void *v);
417
418 /* Appraise integrity measurements */
419 #define IMA_APPRAISE_ENFORCE 0x01
420 #define IMA_APPRAISE_FIX 0x02
421 #define IMA_APPRAISE_LOG 0x04
422 #define IMA_APPRAISE_MODULES 0x08
423 #define IMA_APPRAISE_FIRMWARE 0x10
424 #define IMA_APPRAISE_POLICY 0x20
425 #define IMA_APPRAISE_KEXEC 0x40
426
427 #ifdef CONFIG_IMA_APPRAISE
428 int ima_check_blacklist(struct ima_iint_cache *iint,
429 const struct modsig *modsig, int pcr);
430 int ima_appraise_measurement(enum ima_hooks func, struct ima_iint_cache *iint,
431 struct file *file, const unsigned char *filename,
432 struct evm_ima_xattr_data *xattr_value,
433 int xattr_len, const struct modsig *modsig);
434 int ima_must_appraise(struct mnt_idmap *idmap, struct inode *inode,
435 int mask, enum ima_hooks func);
436 void ima_update_xattr(struct ima_iint_cache *iint, struct file *file);
437 enum integrity_status ima_get_cache_status(struct ima_iint_cache *iint,
438 enum ima_hooks func);
439 enum hash_algo ima_get_hash_algo(const struct evm_ima_xattr_data *xattr_value,
440 int xattr_len);
441 int ima_read_xattr(struct dentry *dentry,
442 struct evm_ima_xattr_data **xattr_value, int xattr_len);
443 void __init init_ima_appraise_lsm(const struct lsm_id *lsmid);
444
445 #else
ima_check_blacklist(struct ima_iint_cache * iint,const struct modsig * modsig,int pcr)446 static inline int ima_check_blacklist(struct ima_iint_cache *iint,
447 const struct modsig *modsig, int pcr)
448 {
449 return 0;
450 }
451
ima_appraise_measurement(enum ima_hooks func,struct ima_iint_cache * iint,struct file * file,const unsigned char * filename,struct evm_ima_xattr_data * xattr_value,int xattr_len,const struct modsig * modsig)452 static inline int ima_appraise_measurement(enum ima_hooks func,
453 struct ima_iint_cache *iint,
454 struct file *file,
455 const unsigned char *filename,
456 struct evm_ima_xattr_data *xattr_value,
457 int xattr_len,
458 const struct modsig *modsig)
459 {
460 return INTEGRITY_UNKNOWN;
461 }
462
ima_must_appraise(struct mnt_idmap * idmap,struct inode * inode,int mask,enum ima_hooks func)463 static inline int ima_must_appraise(struct mnt_idmap *idmap,
464 struct inode *inode, int mask,
465 enum ima_hooks func)
466 {
467 return 0;
468 }
469
ima_update_xattr(struct ima_iint_cache * iint,struct file * file)470 static inline void ima_update_xattr(struct ima_iint_cache *iint,
471 struct file *file)
472 {
473 }
474
475 static inline enum integrity_status
ima_get_cache_status(struct ima_iint_cache * iint,enum ima_hooks func)476 ima_get_cache_status(struct ima_iint_cache *iint, enum ima_hooks func)
477 {
478 return INTEGRITY_UNKNOWN;
479 }
480
481 static inline enum hash_algo
ima_get_hash_algo(struct evm_ima_xattr_data * xattr_value,int xattr_len)482 ima_get_hash_algo(struct evm_ima_xattr_data *xattr_value, int xattr_len)
483 {
484 return ima_hash_algo;
485 }
486
ima_read_xattr(struct dentry * dentry,struct evm_ima_xattr_data ** xattr_value,int xattr_len)487 static inline int ima_read_xattr(struct dentry *dentry,
488 struct evm_ima_xattr_data **xattr_value,
489 int xattr_len)
490 {
491 return 0;
492 }
493
init_ima_appraise_lsm(const struct lsm_id * lsmid)494 static inline void __init init_ima_appraise_lsm(const struct lsm_id *lsmid)
495 {
496 }
497
498 #endif /* CONFIG_IMA_APPRAISE */
499
500 #ifdef CONFIG_IMA_APPRAISE_MODSIG
501 int ima_read_modsig(enum ima_hooks func, const void *buf, loff_t buf_len,
502 struct modsig **modsig);
503 void ima_collect_modsig(struct modsig *modsig, const void *buf, loff_t size);
504 int ima_get_modsig_digest(const struct modsig *modsig, enum hash_algo *algo,
505 const u8 **digest, u32 *digest_size);
506 int ima_get_raw_modsig(const struct modsig *modsig, const void **data,
507 u32 *data_len);
508 void ima_free_modsig(struct modsig *modsig);
509 #else
ima_read_modsig(enum ima_hooks func,const void * buf,loff_t buf_len,struct modsig ** modsig)510 static inline int ima_read_modsig(enum ima_hooks func, const void *buf,
511 loff_t buf_len, struct modsig **modsig)
512 {
513 return -EOPNOTSUPP;
514 }
515
ima_collect_modsig(struct modsig * modsig,const void * buf,loff_t size)516 static inline void ima_collect_modsig(struct modsig *modsig, const void *buf,
517 loff_t size)
518 {
519 }
520
ima_get_modsig_digest(const struct modsig * modsig,enum hash_algo * algo,const u8 ** digest,u32 * digest_size)521 static inline int ima_get_modsig_digest(const struct modsig *modsig,
522 enum hash_algo *algo, const u8 **digest,
523 u32 *digest_size)
524 {
525 return -EOPNOTSUPP;
526 }
527
ima_get_raw_modsig(const struct modsig * modsig,const void ** data,u32 * data_len)528 static inline int ima_get_raw_modsig(const struct modsig *modsig,
529 const void **data, u32 *data_len)
530 {
531 return -EOPNOTSUPP;
532 }
533
ima_free_modsig(struct modsig * modsig)534 static inline void ima_free_modsig(struct modsig *modsig)
535 {
536 }
537 #endif /* CONFIG_IMA_APPRAISE_MODSIG */
538
539 /* LSM based policy rules require audit */
540 #ifdef CONFIG_IMA_LSM_RULES
541
542 #define ima_filter_rule_init security_audit_rule_init
543 #define ima_filter_rule_free security_audit_rule_free
544 #define ima_filter_rule_match security_audit_rule_match
545
546 #else
547
ima_filter_rule_init(u32 field,u32 op,char * rulestr,void ** lsmrule,gfp_t gfp)548 static inline int ima_filter_rule_init(u32 field, u32 op, char *rulestr,
549 void **lsmrule, gfp_t gfp)
550 {
551 return -EINVAL;
552 }
553
ima_filter_rule_free(void * lsmrule)554 static inline void ima_filter_rule_free(void *lsmrule)
555 {
556 }
557
ima_filter_rule_match(u32 secid,u32 field,u32 op,void * lsmrule)558 static inline int ima_filter_rule_match(u32 secid, u32 field, u32 op,
559 void *lsmrule)
560 {
561 return -EINVAL;
562 }
563 #endif /* CONFIG_IMA_LSM_RULES */
564
565 #ifdef CONFIG_IMA_READ_POLICY
566 #define POLICY_FILE_FLAGS (S_IWUSR | S_IRUSR)
567 #else
568 #define POLICY_FILE_FLAGS S_IWUSR
569 #endif /* CONFIG_IMA_READ_POLICY */
570
571 #endif /* __LINUX_IMA_H */
572