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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2005,2006,2007,2008 IBM Corporation
4 *
5 * Authors:
6 * Reiner Sailer <[email protected]>
7 * Mimi Zohar <[email protected]>
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
27enum ima_show_type { IMA_SHOW_BINARY, IMA_SHOW_BINARY_NO_FIELD_LEN,
28 IMA_SHOW_BINARY_OLD_STRING_FMT, IMA_SHOW_ASCII };
29enum tpm_pcrs { TPM_PCR0 = 0, TPM_PCR8 = 8, TPM_PCR10 = 10 };
30
31/*
32 * BINARY: current binary measurements list
33 * BINARY_STAGED: staged binary measurements list
34 * BINARY_FULL: binary measurements list since IMA init (lost after kexec)
35 */
36enum binary_lists {
37 BINARY, BINARY_STAGED, BINARY_FULL, BINARY__LAST
38};
39
40/* digest size for IMA, fits SHA1 or MD5 */
41#define IMA_DIGEST_SIZE SHA1_DIGEST_SIZE
42#define IMA_EVENT_NAME_LEN_MAX 255
43
44#define IMA_HASH_BITS 10
45#define IMA_MEASURE_HTABLE_SIZE (1 << IMA_HASH_BITS)
46
47#define IMA_TEMPLATE_FIELD_ID_MAX_LEN 16
48#define IMA_TEMPLATE_NUM_FIELDS_MAX 15
49
50#define IMA_TEMPLATE_IMA_NAME "ima"
51#define IMA_TEMPLATE_IMA_FMT "d|n"
52
53#define NR_BANKS(chip) ((chip != NULL) ? chip->nr_allocated_banks : 0)
54
55/* current content of the policy */
56extern int ima_policy_flag;
57
58extern struct mutex ima_write_mutex;
59
60/* bitset of digests algorithms allowed in the setxattr hook */
61extern atomic_t ima_setxattr_allowed_hash_algorithms;
62
63/* IMA hash algorithm description */
64struct ima_algo_desc {
65 struct crypto_shash *tfm;
66 enum hash_algo algo;
67 unsigned int digest_size;
68};
69
70/* set during initialization */
71extern int ima_hash_algo __ro_after_init;
72extern int ima_sha1_idx __ro_after_init;
73extern int ima_hash_algo_idx __ro_after_init;
74extern int ima_extra_slots __ro_after_init;
75extern struct ima_algo_desc *ima_algo_array __ro_after_init;
76
77extern int ima_appraise;
78extern struct tpm_chip *ima_tpm_chip;
79extern const char boot_aggregate_name[];
80extern const char boot_aggregate_late_name[];
81
82/* IMA event related data */
83struct ima_event_data {
84 struct ima_iint_cache *iint;
85 struct file *file;
86 const unsigned char *filename;
87 struct evm_ima_xattr_data *xattr_value;
88 int xattr_len;
89 const struct modsig *modsig;
90 const char *violation;
91 const void *buf;
92 int buf_len;
93};
94
95/* IMA template field data definition */
96struct ima_field_data {
97 u8 *data;
98 u32 len;
99};
100
101/* IMA template field definition */
102struct ima_template_field {
103 const char field_id[IMA_TEMPLATE_FIELD_ID_MAX_LEN];
104 int (*field_init)(struct ima_event_data *event_data,
105 struct ima_field_data *field_data);
106 void (*field_show)(struct seq_file *m, enum ima_show_type show,
107 struct ima_field_data *field_data);
108};
109
110/* IMA template descriptor definition */
111struct ima_template_desc {
112 struct list_head list;
113 char *name;
114 char *fmt;
115 int num_fields;
116 const struct ima_template_field **fields;
117};
118
119struct ima_template_entry {
120 int pcr;
121 struct tpm_digest *digests;
122 struct ima_template_desc *template_desc; /* template descriptor */
123 u32 template_data_len;
124 struct ima_field_data template_data[]; /* template related data */
125};
126
127struct ima_queue_entry {
128 struct hlist_node hnext; /* place in hash collision list */
129 struct list_head later; /* place in ima_measurements list */
130 struct ima_template_entry *entry;
131};
132extern struct list_head ima_measurements; /* list of all measurements */
133extern struct list_head ima_measurements_staged; /* list of staged meas. */
134
135/* Some details preceding the binary serialized measurement list */
136struct ima_kexec_hdr {
137 u16 version;
138 u16 _reserved0;
139 u32 _reserved1;
140 u64 buffer_size;
141 u64 count;
142};
143
144/* IMA iint action cache flags */
145#define IMA_MEASURE 0x00000001
146#define IMA_MEASURED 0x00000002
147#define IMA_APPRAISE 0x00000004
148#define IMA_APPRAISED 0x00000008
149/*#define IMA_COLLECT 0x00000010 do not use this flag */
150#define IMA_COLLECTED 0x00000020
151#define IMA_AUDIT 0x00000040
152#define IMA_AUDITED 0x00000080
153#define IMA_HASH 0x00000100
154#define IMA_HASHED 0x00000200
155
156/* IMA iint policy rule cache flags */
157#define IMA_NONACTION_FLAGS 0xff000000
158#define IMA_DIGSIG_REQUIRED 0x01000000
159#define IMA_PERMIT_DIRECTIO 0x02000000
160#define IMA_NEW_FILE 0x04000000
161#define IMA_SIGV3_REQUIRED 0x08000000
162#define IMA_FAIL_UNVERIFIABLE_SIGS 0x10000000
163#define IMA_MODSIG_ALLOWED 0x20000000
164#define IMA_CHECK_BLACKLIST 0x40000000
165#define IMA_VERITY_REQUIRED 0x80000000
166
167/* Exclude non-action flags which are not rule-specific. */
168#define IMA_NONACTION_RULE_FLAGS (IMA_NONACTION_FLAGS & ~IMA_NEW_FILE)
169
170#define IMA_DO_MASK (IMA_MEASURE | IMA_APPRAISE | IMA_AUDIT | \
171 IMA_HASH | IMA_APPRAISE_SUBMASK)
172#define IMA_DONE_MASK (IMA_MEASURED | IMA_APPRAISED | IMA_AUDITED | \
173 IMA_HASHED | IMA_COLLECTED | \
174 IMA_APPRAISED_SUBMASK)
175
176/* IMA iint subaction appraise cache flags */
177#define IMA_FILE_APPRAISE 0x00001000
178#define IMA_FILE_APPRAISED 0x00002000
179#define IMA_MMAP_APPRAISE 0x00004000
180#define IMA_MMAP_APPRAISED 0x00008000
181#define IMA_BPRM_APPRAISE 0x00010000
182#define IMA_BPRM_APPRAISED 0x00020000
183#define IMA_READ_APPRAISE 0x00040000
184#define IMA_READ_APPRAISED 0x00080000
185#define IMA_CREDS_APPRAISE 0x00100000
186#define IMA_CREDS_APPRAISED 0x00200000
187#define IMA_APPRAISE_SUBMASK (IMA_FILE_APPRAISE | IMA_MMAP_APPRAISE | \
188 IMA_BPRM_APPRAISE | IMA_READ_APPRAISE | \
189 IMA_CREDS_APPRAISE)
190#define IMA_APPRAISED_SUBMASK (IMA_FILE_APPRAISED | IMA_MMAP_APPRAISED | \
191 IMA_BPRM_APPRAISED | IMA_READ_APPRAISED | \
192 IMA_CREDS_APPRAISED)
193
194/*
195 * IMA iint cache atomic_flags
196 *
197 * IMA_CHANGE_ATTR - indicates that chATTR() was called (chmod, chown, chgrp)
198 * and file attributes have changed. On file open, it causes IMA to clear
199 * iint->flags to re-evaluate policy and perform IMA functions again.
200 *
201 * IMA_CHANGE_XATTR - indicates that setxattr or removexattr was called and
202 * extended attributes have changed. On file open, it causes IMA to clear
203 * iint->flags IMA_DONE_MASK to re-appraise.
204 *
205 * IMA_UPDATE_XATTR - indicates that security.ima needs to be updated. It is
206 * cleared if file policy changes and no update is needed.
207 *
208 * IMA_DIGSIG - indicates that file security.ima has signature and file
209 * security.ima must not update on file close.
210 *
211 * IMA_MAY_EMIT_TOMTOU - indicates to add Time-of-Measure-Time-of-Use (ToMToU)
212 * integrity violation (a file that is already opened for read is opened for
213 * write) to the measurement list and to also emit an audit message.
214 *
215 * IMA_EMITTED_OPENWRITERS - indicates to add open-writers integrity violation
216 * (a file that is already opened for write is opened for read) to the
217 * measurement list and to also emit an audit message.
218 *
219 */
220#define IMA_CHANGE_XATTR 0
221#define IMA_UPDATE_XATTR 1
222#define IMA_CHANGE_ATTR 2
223#define IMA_DIGSIG 3
224#define IMA_MAY_EMIT_TOMTOU 4
225#define IMA_EMITTED_OPENWRITERS 5
226
227/* IMA integrity metadata associated with an inode */
228struct ima_iint_cache {
229 struct mutex mutex; /* protects: version, flags, digest */
230 struct integrity_inode_attributes real_inode;
231 unsigned long flags;
232 unsigned long measured_pcrs;
233 unsigned long atomic_flags;
234 enum integrity_status ima_file_status:4;
235 enum integrity_status ima_mmap_status:4;
236 enum integrity_status ima_bprm_status:4;
237 enum integrity_status ima_read_status:4;
238 enum integrity_status ima_creds_status:4;
239 struct ima_digest_data *ima_hash;
240};
241
242extern struct lsm_blob_sizes ima_blob_sizes;
243
244static inline struct ima_iint_cache *
245ima_inode_get_iint(const struct inode *inode)
246{
247 struct ima_iint_cache **iint_sec;
248
249 if (unlikely(!inode->i_security))
250 return NULL;
251
252 iint_sec = inode->i_security + ima_blob_sizes.lbs_inode;
253 return *iint_sec;
254}
255
256static inline void ima_inode_set_iint(const struct inode *inode,
257 struct ima_iint_cache *iint)
258{
259 struct ima_iint_cache **iint_sec;
260
261 if (unlikely(!inode->i_security))
262 return;
263
264 iint_sec = inode->i_security + ima_blob_sizes.lbs_inode;
265 *iint_sec = iint;
266}
267
268struct ima_iint_cache *ima_iint_find(struct inode *inode);
269struct ima_iint_cache *ima_inode_get(struct inode *inode);
270void ima_inode_free_rcu(void *inode_security);
271void __init ima_iintcache_init(void);
272
273extern const int read_idmap[];
274
275#ifdef CONFIG_HAVE_IMA_KEXEC
276void ima_load_kexec_buffer(void);
277#else
278static inline void ima_load_kexec_buffer(void) {}
279#endif /* CONFIG_HAVE_IMA_KEXEC */
280
281#ifdef CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS
282void ima_post_key_create_or_update(struct key *keyring, struct key *key,
283 const void *payload, size_t plen,
284 unsigned long flags, bool create);
285#endif
286
287#ifdef CONFIG_IMA_KEXEC
288void ima_measure_kexec_event(const char *event_name);
289#else
290static inline void ima_measure_kexec_event(const char *event_name) {}
291#endif
292
293/*
294 * The default binary_runtime_measurements list format is defined as the
295 * platform native format. The canonical format is defined as little-endian.
296 */
297extern bool ima_canonical_fmt;
298
299/* Internal IMA function definitions */
300int ima_init(void);
301int ima_fs_init(void);
302int ima_add_template_entry(struct ima_template_entry *entry, int violation,
303 const char *op, struct inode *inode,
304 const unsigned char *filename);
305int ima_calc_file_hash(struct file *file, struct ima_digest_data *hash);
306int ima_calc_buffer_hash(const void *buf, loff_t len,
307 struct ima_digest_data *hash);
308int ima_calc_field_array_hash(struct ima_field_data *field_data,
309 struct ima_template_entry *entry);
310int ima_calc_boot_aggregate(struct ima_digest_data *hash);
311void ima_add_violation(struct file *file, const unsigned char *filename,
312 struct ima_iint_cache *iint, const char *op,
313 const char *cause);
314int ima_init_crypto(void);
315void ima_putc(struct seq_file *m, void *data, int datalen);
316void ima_print_digest(struct seq_file *m, u8 *digest, u32 size);
317int template_desc_init_fields(const char *template_fmt,
318 const struct ima_template_field ***fields,
319 int *num_fields);
320struct ima_template_desc *ima_template_desc_current(void);
321struct ima_template_desc *ima_template_desc_buf(void);
322struct ima_template_desc *lookup_template_desc(const char *name);
323bool ima_template_has_modsig(const struct ima_template_desc *ima_template);
324int ima_queue_stage(void);
325int ima_queue_staged_delete_all(void);
326int ima_queue_delete_partial(unsigned long req_value);
327int ima_restore_measurement_entry(struct ima_template_entry *entry);
328int ima_restore_measurement_list(loff_t bufsize, void *buf);
329int ima_measurements_show(struct seq_file *m, void *v);
330int __init ima_init_htable(void);
331unsigned long ima_get_binary_runtime_size(enum binary_lists binary_list);
332int ima_init_template(void);
333void ima_init_template_list(void);
334int __init ima_init_digests(void);
335void __init ima_init_reboot_notifier(void);
336int ima_lsm_policy_change(struct notifier_block *nb, unsigned long event,
337 void *lsm_data);
338
339/*
340 * used to protect h_table and sha_table
341 */
342extern spinlock_t ima_queue_lock;
343
344/* Total number of measurement list records since hard boot. */
345extern atomic_long_t ima_num_records[BINARY__LAST];
346/* Total number of violations since hard boot. */
347extern atomic_long_t ima_num_violations;
348extern struct hlist_head __rcu *ima_htable;
349extern bool ima_flush_htable;
350
351static inline unsigned int ima_hash_key(u8 *digest)
352{
353 /* there is no point in taking a hash of part of a digest */
354 return (digest[0] | digest[1] << 8) % IMA_MEASURE_HTABLE_SIZE;
355}
356
357#define __ima_hooks(hook) \
358 hook(NONE, none) \
359 hook(FILE_CHECK, file) \
360 hook(MMAP_CHECK, mmap) \
361 hook(MMAP_CHECK_REQPROT, mmap_reqprot) \
362 hook(BPRM_CHECK, bprm) \
363 hook(CREDS_CHECK, creds) \
364 hook(POST_SETATTR, post_setattr) \
365 hook(MODULE_CHECK, module) \
366 hook(FIRMWARE_CHECK, firmware) \
367 hook(KEXEC_KERNEL_CHECK, kexec_kernel) \
368 hook(KEXEC_INITRAMFS_CHECK, kexec_initramfs) \
369 hook(POLICY_CHECK, policy) \
370 hook(KEXEC_CMDLINE, kexec_cmdline) \
371 hook(KEY_CHECK, key) \
372 hook(CRITICAL_DATA, critical_data) \
373 hook(SETXATTR_CHECK, setxattr_check) \
374 hook(MAX_CHECK, none)
375
376#define __ima_hook_enumify(ENUM, str) ENUM,
377#define __ima_stringify(arg) (#arg)
378#define __ima_hook_measuring_stringify(ENUM, str) \
379 (__ima_stringify(measuring_ ##str)),
380
381enum ima_hooks {
382 __ima_hooks(__ima_hook_enumify)
383};
384
385static const char * const ima_hooks_measure_str[] = {
386 __ima_hooks(__ima_hook_measuring_stringify)
387};
388
389static inline const char *func_measure_str(enum ima_hooks func)
390{
391 if (func >= MAX_CHECK)
392 return ima_hooks_measure_str[NONE];
393
394 return ima_hooks_measure_str[func];
395}
396
397extern const char *const func_tokens[];
398
399struct modsig;
400
401#ifdef CONFIG_IMA_QUEUE_EARLY_BOOT_KEYS
402/*
403 * To track keys that need to be measured.
404 */
405struct ima_key_entry {
406 struct list_head list;
407 void *payload;
408 size_t payload_len;
409 char *keyring_name;
410};
411void ima_init_key_queue(void);
412bool ima_should_queue_key(void);
413bool ima_queue_key(struct key *keyring, const void *payload,
414 size_t payload_len);
415void ima_process_queued_keys(void);
416#else
417static inline void ima_init_key_queue(void) {}
418static inline bool ima_should_queue_key(void) { return false; }
419static inline bool ima_queue_key(struct key *keyring,
420 const void *payload,
421 size_t payload_len) { return false; }
422static inline void ima_process_queued_keys(void) {}
423#endif /* CONFIG_IMA_QUEUE_EARLY_BOOT_KEYS */
424
425/* LIM API function definitions */
426int ima_get_action(const struct mnt_idmap *idmap, struct inode *inode,
427 const struct cred *cred, struct lsm_prop *prop, int mask,
428 enum ima_hooks func, int *pcr,
429 struct ima_template_desc **template_desc,
430 const char *func_data, unsigned int *allowed_algos);
431int ima_must_measure(struct inode *inode, int mask, enum ima_hooks func);
432int ima_collect_measurement(struct ima_iint_cache *iint, struct file *file,
433 void *buf, loff_t size, enum hash_algo algo,
434 struct modsig *modsig);
435void ima_store_measurement(struct ima_iint_cache *iint, struct file *file,
436 const unsigned char *filename,
437 struct evm_ima_xattr_data *xattr_value,
438 int xattr_len, const struct modsig *modsig, int pcr,
439 struct ima_template_desc *template_desc);
440int process_buffer_measurement(const struct mnt_idmap *idmap,
441 struct inode *inode, const void *buf, int size,
442 const char *eventname, enum ima_hooks func,
443 int pcr, const char *func_data,
444 bool buf_hash, u8 *digest, size_t digest_len);
445void ima_audit_measurement(struct ima_iint_cache *iint,
446 const unsigned char *filename);
447int ima_alloc_init_template(struct ima_event_data *event_data,
448 struct ima_template_entry **entry,
449 struct ima_template_desc *template_desc);
450int ima_store_template(struct ima_template_entry *entry, int violation,
451 struct inode *inode,
452 const unsigned char *filename, int pcr);
453void ima_free_template_entry(struct ima_template_entry *entry);
454const char *ima_d_path(const struct path *path, char **pathbuf, char *filename);
455
456/* IMA policy related functions */
457int ima_match_policy(const struct mnt_idmap *idmap, struct inode *inode,
458 const struct cred *cred, struct lsm_prop *prop,
459 enum ima_hooks func, int mask, int flags, int *pcr,
460 struct ima_template_desc **template_desc,
461 const char *func_data, unsigned int *allowed_algos);
462void ima_init_policy(void);
463void ima_update_policy(void);
464void ima_update_policy_flags(void);
465ssize_t ima_parse_add_rule(char *);
466void ima_delete_rules(void);
467int ima_check_policy(void);
468void *ima_policy_start(struct seq_file *m, loff_t *pos);
469void *ima_policy_next(struct seq_file *m, void *v, loff_t *pos);
470void ima_policy_stop(struct seq_file *m, void *v);
471int ima_policy_show(struct seq_file *m, void *v);
472void ima_measure_loaded_policy(void);
473int ima_measure_raw_policy(const char *buf, size_t buf_len);
474
475/* Appraise integrity measurements */
476#define IMA_APPRAISE_ENFORCE 0x01
477#define IMA_APPRAISE_FIX 0x02
478#define IMA_APPRAISE_LOG 0x04
479#define IMA_APPRAISE_MODULES 0x08
480#define IMA_APPRAISE_FIRMWARE 0x10
481#define IMA_APPRAISE_POLICY 0x20
482#define IMA_APPRAISE_KEXEC 0x40
483
484#ifdef CONFIG_IMA_APPRAISE
485int ima_check_blacklist(struct ima_iint_cache *iint,
486 const struct modsig *modsig, int pcr);
487int ima_appraise_measurement(enum ima_hooks func, struct ima_iint_cache *iint,
488 struct file *file, const unsigned char *filename,
489 struct evm_ima_xattr_data *xattr_value,
490 int xattr_len, const struct modsig *modsig,
491 bool bprm_is_check);
492int ima_must_appraise(const struct mnt_idmap *idmap, struct inode *inode,
493 int mask, enum ima_hooks func);
494void ima_update_xattr(struct ima_iint_cache *iint, struct file *file);
495enum integrity_status ima_get_cache_status(struct ima_iint_cache *iint,
496 enum ima_hooks func);
497enum hash_algo ima_get_hash_algo(const struct evm_ima_xattr_data *xattr_value,
498 int xattr_len);
499int ima_read_xattr(struct dentry *dentry,
500 struct evm_ima_xattr_data **xattr_value, int xattr_len);
501void __init init_ima_appraise_lsm(const struct lsm_id *lsmid);
502
503#else
504static inline int ima_check_blacklist(struct ima_iint_cache *iint,
505 const struct modsig *modsig, int pcr)
506{
507 return 0;
508}
509
510static inline int ima_appraise_measurement(enum ima_hooks func,
511 struct ima_iint_cache *iint,
512 struct file *file,
513 const unsigned char *filename,
514 struct evm_ima_xattr_data *xattr_value,
515 int xattr_len,
516 const struct modsig *modsig,
517 bool bprm_is_check)
518{
519 return INTEGRITY_UNKNOWN;
520}
521
522static inline int ima_must_appraise(const struct mnt_idmap *idmap,
523 struct inode *inode, int mask,
524 enum ima_hooks func)
525{
526 return 0;
527}
528
529static inline void ima_update_xattr(struct ima_iint_cache *iint,
530 struct file *file)
531{
532}
533
534static inline enum integrity_status
535ima_get_cache_status(struct ima_iint_cache *iint, enum ima_hooks func)
536{
537 return INTEGRITY_UNKNOWN;
538}
539
540static inline enum hash_algo
541ima_get_hash_algo(struct evm_ima_xattr_data *xattr_value, int xattr_len)
542{
543 return ima_hash_algo;
544}
545
546static inline int ima_read_xattr(struct dentry *dentry,
547 struct evm_ima_xattr_data **xattr_value,
548 int xattr_len)
549{
550 return 0;
551}
552
553static inline void __init init_ima_appraise_lsm(const struct lsm_id *lsmid)
554{
555}
556
557#endif /* CONFIG_IMA_APPRAISE */
558
559#ifdef CONFIG_IMA_APPRAISE_MODSIG
560int ima_read_modsig(enum ima_hooks func, const void *buf, loff_t buf_len,
561 struct modsig **modsig);
562void ima_collect_modsig(struct modsig *modsig, const void *buf, loff_t size);
563int ima_get_modsig_digest(const struct modsig *modsig, enum hash_algo *algo,
564 const u8 **digest, u32 *digest_size);
565int ima_get_raw_modsig(const struct modsig *modsig, const void **data,
566 u32 *data_len);
567void ima_free_modsig(struct modsig *modsig);
568#else
569static inline int ima_read_modsig(enum ima_hooks func, const void *buf,
570 loff_t buf_len, struct modsig **modsig)
571{
572 return -EOPNOTSUPP;
573}
574
575static inline void ima_collect_modsig(struct modsig *modsig, const void *buf,
576 loff_t size)
577{
578}
579
580static inline int ima_get_modsig_digest(const struct modsig *modsig,
581 enum hash_algo *algo, const u8 **digest,
582 u32 *digest_size)
583{
584 return -EOPNOTSUPP;
585}
586
587static inline int ima_get_raw_modsig(const struct modsig *modsig,
588 const void **data, u32 *data_len)
589{
590 return -EOPNOTSUPP;
591}
592
593static inline void ima_free_modsig(struct modsig *modsig)
594{
595}
596#endif /* CONFIG_IMA_APPRAISE_MODSIG */
597
598/* LSM based policy rules require audit */
599#ifdef CONFIG_IMA_LSM_RULES
600
601#define ima_filter_rule_init security_audit_rule_init
602#define ima_filter_rule_free security_audit_rule_free
603#define ima_filter_rule_match security_audit_rule_match
604
605#else
606
607static inline int ima_filter_rule_init(u32 field, u32 op, char *rulestr,
608 void **lsmrule, gfp_t gfp)
609{
610 return -EINVAL;
611}
612
613static inline void ima_filter_rule_free(void *lsmrule)
614{
615}
616
617static inline int ima_filter_rule_match(struct lsm_prop *prop, u32 field, u32 op,
618 void *lsmrule)
619{
620 return -EINVAL;
621}
622#endif /* CONFIG_IMA_LSM_RULES */
623
624#ifdef CONFIG_IMA_READ_POLICY
625#define POLICY_FILE_FLAGS (S_IWUSR | S_IRUSR)
626#else
627#define POLICY_FILE_FLAGS S_IWUSR
628#endif /* CONFIG_IMA_READ_POLICY */
629
630#endif /* __LINUX_IMA_H */