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66dbc325 MZ |
1 | /* |
2 | * Copyright (C) 2005-2010 IBM Corporation | |
3 | * | |
4 | * Author: | |
5 | * Mimi Zohar <zohar@us.ibm.com> | |
6 | * Kylene Hall <kjhall@us.ibm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation, version 2 of the License. | |
11 | * | |
12 | * File: evm_main.c | |
13 | * implements evm_inode_setxattr, evm_inode_post_setxattr, | |
14 | * evm_inode_removexattr, and evm_verifyxattr | |
15 | */ | |
16 | ||
20ee451f JP |
17 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
18 | ||
66dbc325 MZ |
19 | #include <linux/module.h> |
20 | #include <linux/crypto.h> | |
9b97b6cd | 21 | #include <linux/audit.h> |
66dbc325 MZ |
22 | #include <linux/xattr.h> |
23 | #include <linux/integrity.h> | |
3e1be52d | 24 | #include <linux/evm.h> |
d46eb369 | 25 | #include <crypto/hash.h> |
613317bd | 26 | #include <crypto/algapi.h> |
66dbc325 MZ |
27 | #include "evm.h" |
28 | ||
29 | int evm_initialized; | |
30 | ||
9b97b6cd MZ |
31 | static char *integrity_status_msg[] = { |
32 | "pass", "fail", "no_label", "no_xattrs", "unknown" | |
33 | }; | |
66dbc325 | 34 | char *evm_hmac = "hmac(sha1)"; |
15647eb3 | 35 | char *evm_hash = "sha1"; |
d3b33679 | 36 | int evm_hmac_attrs; |
66dbc325 MZ |
37 | |
38 | char *evm_config_xattrnames[] = { | |
39 | #ifdef CONFIG_SECURITY_SELINUX | |
40 | XATTR_NAME_SELINUX, | |
41 | #endif | |
42 | #ifdef CONFIG_SECURITY_SMACK | |
43 | XATTR_NAME_SMACK, | |
3e38df56 DK |
44 | #ifdef CONFIG_EVM_EXTRA_SMACK_XATTRS |
45 | XATTR_NAME_SMACKEXEC, | |
46 | XATTR_NAME_SMACKTRANSMUTE, | |
47 | XATTR_NAME_SMACKMMAP, | |
48 | #endif | |
2fe5d6de MZ |
49 | #endif |
50 | #ifdef CONFIG_IMA_APPRAISE | |
51 | XATTR_NAME_IMA, | |
66dbc325 MZ |
52 | #endif |
53 | XATTR_NAME_CAPS, | |
54 | NULL | |
55 | }; | |
56 | ||
7102ebcd MZ |
57 | static int evm_fixmode; |
58 | static int __init evm_set_fixmode(char *str) | |
59 | { | |
60 | if (strncmp(str, "fix", 3) == 0) | |
61 | evm_fixmode = 1; | |
62 | return 0; | |
63 | } | |
64 | __setup("evm=", evm_set_fixmode); | |
65 | ||
d3b33679 DK |
66 | static void __init evm_init_config(void) |
67 | { | |
68 | #ifdef CONFIG_EVM_ATTR_FSUUID | |
69 | evm_hmac_attrs |= EVM_ATTR_FSUUID; | |
70 | #endif | |
71 | pr_info("HMAC attrs: 0x%x\n", evm_hmac_attrs); | |
72 | } | |
73 | ||
15647eb3 DK |
74 | static int evm_find_protected_xattrs(struct dentry *dentry) |
75 | { | |
c6f493d6 | 76 | struct inode *inode = d_backing_inode(dentry); |
15647eb3 DK |
77 | char **xattr; |
78 | int error; | |
79 | int count = 0; | |
80 | ||
5d6c3191 | 81 | if (!(inode->i_opflags & IOP_XATTR)) |
15647eb3 DK |
82 | return -EOPNOTSUPP; |
83 | ||
84 | for (xattr = evm_config_xattrnames; *xattr != NULL; xattr++) { | |
5d6c3191 | 85 | error = __vfs_getxattr(dentry, inode, *xattr, NULL, 0); |
15647eb3 DK |
86 | if (error < 0) { |
87 | if (error == -ENODATA) | |
88 | continue; | |
89 | return error; | |
90 | } | |
91 | count++; | |
92 | } | |
93 | ||
94 | return count; | |
95 | } | |
96 | ||
66dbc325 MZ |
97 | /* |
98 | * evm_verify_hmac - calculate and compare the HMAC with the EVM xattr | |
99 | * | |
100 | * Compute the HMAC on the dentry's protected set of extended attributes | |
7102ebcd MZ |
101 | * and compare it against the stored security.evm xattr. |
102 | * | |
103 | * For performance: | |
104 | * - use the previoulsy retrieved xattr value and length to calculate the | |
105 | * HMAC.) | |
106 | * - cache the verification result in the iint, when available. | |
66dbc325 MZ |
107 | * |
108 | * Returns integrity status | |
109 | */ | |
110 | static enum integrity_status evm_verify_hmac(struct dentry *dentry, | |
111 | const char *xattr_name, | |
112 | char *xattr_value, | |
113 | size_t xattr_value_len, | |
114 | struct integrity_iint_cache *iint) | |
115 | { | |
15647eb3 DK |
116 | struct evm_ima_xattr_data *xattr_data = NULL; |
117 | struct evm_ima_xattr_data calc; | |
566be59a | 118 | enum integrity_status evm_status = INTEGRITY_PASS; |
15647eb3 | 119 | int rc, xattr_len; |
66dbc325 | 120 | |
7102ebcd | 121 | if (iint && iint->evm_status == INTEGRITY_PASS) |
24e0198e | 122 | return iint->evm_status; |
66dbc325 | 123 | |
6d38ca01 DK |
124 | /* if status is not PASS, try to check again - against -ENOMEM */ |
125 | ||
15647eb3 DK |
126 | /* first need to know the sig type */ |
127 | rc = vfs_getxattr_alloc(dentry, XATTR_NAME_EVM, (char **)&xattr_data, 0, | |
128 | GFP_NOFS); | |
129 | if (rc <= 0) { | |
1f100979 DK |
130 | evm_status = INTEGRITY_FAIL; |
131 | if (rc == -ENODATA) { | |
15647eb3 DK |
132 | rc = evm_find_protected_xattrs(dentry); |
133 | if (rc > 0) | |
134 | evm_status = INTEGRITY_NOLABEL; | |
135 | else if (rc == 0) | |
136 | evm_status = INTEGRITY_NOXATTRS; /* new file */ | |
1f100979 DK |
137 | } else if (rc == -EOPNOTSUPP) { |
138 | evm_status = INTEGRITY_UNKNOWN; | |
15647eb3 | 139 | } |
566be59a MZ |
140 | goto out; |
141 | } | |
66dbc325 | 142 | |
b1aaab22 | 143 | xattr_len = rc; |
15647eb3 DK |
144 | |
145 | /* check value type */ | |
146 | switch (xattr_data->type) { | |
147 | case EVM_XATTR_HMAC: | |
148 | rc = evm_calc_hmac(dentry, xattr_name, xattr_value, | |
149 | xattr_value_len, calc.digest); | |
150 | if (rc) | |
151 | break; | |
613317bd | 152 | rc = crypto_memneq(xattr_data->digest, calc.digest, |
15647eb3 DK |
153 | sizeof(calc.digest)); |
154 | if (rc) | |
155 | rc = -EINVAL; | |
156 | break; | |
157 | case EVM_IMA_XATTR_DIGSIG: | |
158 | rc = evm_calc_hash(dentry, xattr_name, xattr_value, | |
159 | xattr_value_len, calc.digest); | |
160 | if (rc) | |
161 | break; | |
162 | rc = integrity_digsig_verify(INTEGRITY_KEYRING_EVM, | |
b1aaab22 | 163 | (const char *)xattr_data, xattr_len, |
15647eb3 DK |
164 | calc.digest, sizeof(calc.digest)); |
165 | if (!rc) { | |
c2baec7f DK |
166 | /* Replace RSA with HMAC if not mounted readonly and |
167 | * not immutable | |
168 | */ | |
c6f493d6 DH |
169 | if (!IS_RDONLY(d_backing_inode(dentry)) && |
170 | !IS_IMMUTABLE(d_backing_inode(dentry))) | |
c2baec7f DK |
171 | evm_update_evmxattr(dentry, xattr_name, |
172 | xattr_value, | |
173 | xattr_value_len); | |
15647eb3 DK |
174 | } |
175 | break; | |
176 | default: | |
177 | rc = -EINVAL; | |
178 | break; | |
179 | } | |
180 | ||
181 | if (rc) | |
182 | evm_status = (rc == -ENODATA) ? | |
183 | INTEGRITY_NOXATTRS : INTEGRITY_FAIL; | |
7102ebcd MZ |
184 | out: |
185 | if (iint) | |
186 | iint->evm_status = evm_status; | |
15647eb3 | 187 | kfree(xattr_data); |
7102ebcd | 188 | return evm_status; |
66dbc325 MZ |
189 | } |
190 | ||
191 | static int evm_protected_xattr(const char *req_xattr_name) | |
192 | { | |
193 | char **xattrname; | |
194 | int namelen; | |
195 | int found = 0; | |
196 | ||
197 | namelen = strlen(req_xattr_name); | |
198 | for (xattrname = evm_config_xattrnames; *xattrname != NULL; xattrname++) { | |
199 | if ((strlen(*xattrname) == namelen) | |
200 | && (strncmp(req_xattr_name, *xattrname, namelen) == 0)) { | |
201 | found = 1; | |
202 | break; | |
203 | } | |
cb723180 MZ |
204 | if (strncmp(req_xattr_name, |
205 | *xattrname + XATTR_SECURITY_PREFIX_LEN, | |
206 | strlen(req_xattr_name)) == 0) { | |
207 | found = 1; | |
208 | break; | |
209 | } | |
66dbc325 MZ |
210 | } |
211 | return found; | |
212 | } | |
213 | ||
214 | /** | |
215 | * evm_verifyxattr - verify the integrity of the requested xattr | |
216 | * @dentry: object of the verify xattr | |
217 | * @xattr_name: requested xattr | |
218 | * @xattr_value: requested xattr value | |
219 | * @xattr_value_len: requested xattr value length | |
220 | * | |
221 | * Calculate the HMAC for the given dentry and verify it against the stored | |
222 | * security.evm xattr. For performance, use the xattr value and length | |
223 | * previously retrieved to calculate the HMAC. | |
224 | * | |
225 | * Returns the xattr integrity status. | |
226 | * | |
227 | * This function requires the caller to lock the inode's i_mutex before it | |
228 | * is executed. | |
229 | */ | |
230 | enum integrity_status evm_verifyxattr(struct dentry *dentry, | |
231 | const char *xattr_name, | |
2960e6cb DK |
232 | void *xattr_value, size_t xattr_value_len, |
233 | struct integrity_iint_cache *iint) | |
66dbc325 | 234 | { |
66dbc325 MZ |
235 | if (!evm_initialized || !evm_protected_xattr(xattr_name)) |
236 | return INTEGRITY_UNKNOWN; | |
237 | ||
2960e6cb | 238 | if (!iint) { |
c6f493d6 | 239 | iint = integrity_iint_find(d_backing_inode(dentry)); |
2960e6cb DK |
240 | if (!iint) |
241 | return INTEGRITY_UNKNOWN; | |
242 | } | |
243 | return evm_verify_hmac(dentry, xattr_name, xattr_value, | |
66dbc325 | 244 | xattr_value_len, iint); |
66dbc325 MZ |
245 | } |
246 | EXPORT_SYMBOL_GPL(evm_verifyxattr); | |
247 | ||
7102ebcd MZ |
248 | /* |
249 | * evm_verify_current_integrity - verify the dentry's metadata integrity | |
250 | * @dentry: pointer to the affected dentry | |
251 | * | |
252 | * Verify and return the dentry's metadata integrity. The exceptions are | |
253 | * before EVM is initialized or in 'fix' mode. | |
254 | */ | |
255 | static enum integrity_status evm_verify_current_integrity(struct dentry *dentry) | |
256 | { | |
c6f493d6 | 257 | struct inode *inode = d_backing_inode(dentry); |
7102ebcd MZ |
258 | |
259 | if (!evm_initialized || !S_ISREG(inode->i_mode) || evm_fixmode) | |
260 | return 0; | |
261 | return evm_verify_hmac(dentry, NULL, NULL, 0, NULL); | |
262 | } | |
263 | ||
a924ce0b MZ |
264 | /* |
265 | * evm_protect_xattr - protect the EVM extended attribute | |
266 | * | |
bf6d0f5d MZ |
267 | * Prevent security.evm from being modified or removed without the |
268 | * necessary permissions or when the existing value is invalid. | |
269 | * | |
270 | * The posix xattr acls are 'system' prefixed, which normally would not | |
271 | * affect security.evm. An interesting side affect of writing posix xattr | |
272 | * acls is their modifying of the i_mode, which is included in security.evm. | |
273 | * For posix xattr acls only, permit security.evm, even if it currently | |
274 | * doesn't exist, to be updated. | |
a924ce0b MZ |
275 | */ |
276 | static int evm_protect_xattr(struct dentry *dentry, const char *xattr_name, | |
277 | const void *xattr_value, size_t xattr_value_len) | |
278 | { | |
279 | enum integrity_status evm_status; | |
280 | ||
281 | if (strcmp(xattr_name, XATTR_NAME_EVM) == 0) { | |
282 | if (!capable(CAP_SYS_ADMIN)) | |
283 | return -EPERM; | |
bf6d0f5d MZ |
284 | } else if (!evm_protected_xattr(xattr_name)) { |
285 | if (!posix_xattr_acl(xattr_name)) | |
286 | return 0; | |
287 | evm_status = evm_verify_current_integrity(dentry); | |
288 | if ((evm_status == INTEGRITY_PASS) || | |
566be59a | 289 | (evm_status == INTEGRITY_NOXATTRS)) |
bf6d0f5d | 290 | return 0; |
9b97b6cd | 291 | goto out; |
bf6d0f5d | 292 | } |
a924ce0b | 293 | evm_status = evm_verify_current_integrity(dentry); |
3dcbad52 DK |
294 | if (evm_status == INTEGRITY_NOXATTRS) { |
295 | struct integrity_iint_cache *iint; | |
296 | ||
c6f493d6 | 297 | iint = integrity_iint_find(d_backing_inode(dentry)); |
3dcbad52 DK |
298 | if (iint && (iint->flags & IMA_NEW_FILE)) |
299 | return 0; | |
5101a185 MZ |
300 | |
301 | /* exception for pseudo filesystems */ | |
fc64005c AV |
302 | if (dentry->d_sb->s_magic == TMPFS_MAGIC |
303 | || dentry->d_sb->s_magic == SYSFS_MAGIC) | |
5101a185 MZ |
304 | return 0; |
305 | ||
306 | integrity_audit_msg(AUDIT_INTEGRITY_METADATA, | |
307 | dentry->d_inode, dentry->d_name.name, | |
308 | "update_metadata", | |
309 | integrity_status_msg[evm_status], | |
310 | -EPERM, 0); | |
3dcbad52 | 311 | } |
9b97b6cd MZ |
312 | out: |
313 | if (evm_status != INTEGRITY_PASS) | |
c6f493d6 | 314 | integrity_audit_msg(AUDIT_INTEGRITY_METADATA, d_backing_inode(dentry), |
9b97b6cd MZ |
315 | dentry->d_name.name, "appraise_metadata", |
316 | integrity_status_msg[evm_status], | |
317 | -EPERM, 0); | |
a924ce0b MZ |
318 | return evm_status == INTEGRITY_PASS ? 0 : -EPERM; |
319 | } | |
320 | ||
66dbc325 MZ |
321 | /** |
322 | * evm_inode_setxattr - protect the EVM extended attribute | |
323 | * @dentry: pointer to the affected dentry | |
324 | * @xattr_name: pointer to the affected extended attribute name | |
325 | * @xattr_value: pointer to the new extended attribute value | |
326 | * @xattr_value_len: pointer to the new extended attribute value length | |
327 | * | |
2fb1c9a4 MZ |
328 | * Before allowing the 'security.evm' protected xattr to be updated, |
329 | * verify the existing value is valid. As only the kernel should have | |
330 | * access to the EVM encrypted key needed to calculate the HMAC, prevent | |
331 | * userspace from writing HMAC value. Writing 'security.evm' requires | |
332 | * requires CAP_SYS_ADMIN privileges. | |
66dbc325 MZ |
333 | */ |
334 | int evm_inode_setxattr(struct dentry *dentry, const char *xattr_name, | |
335 | const void *xattr_value, size_t xattr_value_len) | |
336 | { | |
2fb1c9a4 MZ |
337 | const struct evm_ima_xattr_data *xattr_data = xattr_value; |
338 | ||
3b1deef6 DK |
339 | if (strcmp(xattr_name, XATTR_NAME_EVM) == 0) { |
340 | if (!xattr_value_len) | |
341 | return -EINVAL; | |
342 | if (xattr_data->type != EVM_IMA_XATTR_DIGSIG) | |
343 | return -EPERM; | |
344 | } | |
a924ce0b MZ |
345 | return evm_protect_xattr(dentry, xattr_name, xattr_value, |
346 | xattr_value_len); | |
66dbc325 MZ |
347 | } |
348 | ||
349 | /** | |
350 | * evm_inode_removexattr - protect the EVM extended attribute | |
351 | * @dentry: pointer to the affected dentry | |
352 | * @xattr_name: pointer to the affected extended attribute name | |
353 | * | |
7102ebcd MZ |
354 | * Removing 'security.evm' requires CAP_SYS_ADMIN privileges and that |
355 | * the current value is valid. | |
66dbc325 MZ |
356 | */ |
357 | int evm_inode_removexattr(struct dentry *dentry, const char *xattr_name) | |
358 | { | |
a924ce0b | 359 | return evm_protect_xattr(dentry, xattr_name, NULL, 0); |
66dbc325 MZ |
360 | } |
361 | ||
523b74b1 DK |
362 | static void evm_reset_status(struct inode *inode) |
363 | { | |
364 | struct integrity_iint_cache *iint; | |
365 | ||
366 | iint = integrity_iint_find(inode); | |
367 | if (iint) | |
368 | iint->evm_status = INTEGRITY_UNKNOWN; | |
369 | } | |
370 | ||
66dbc325 MZ |
371 | /** |
372 | * evm_inode_post_setxattr - update 'security.evm' to reflect the changes | |
373 | * @dentry: pointer to the affected dentry | |
374 | * @xattr_name: pointer to the affected extended attribute name | |
375 | * @xattr_value: pointer to the new extended attribute value | |
376 | * @xattr_value_len: pointer to the new extended attribute value length | |
377 | * | |
378 | * Update the HMAC stored in 'security.evm' to reflect the change. | |
379 | * | |
380 | * No need to take the i_mutex lock here, as this function is called from | |
381 | * __vfs_setxattr_noperm(). The caller of which has taken the inode's | |
382 | * i_mutex lock. | |
383 | */ | |
384 | void evm_inode_post_setxattr(struct dentry *dentry, const char *xattr_name, | |
385 | const void *xattr_value, size_t xattr_value_len) | |
386 | { | |
bf6d0f5d MZ |
387 | if (!evm_initialized || (!evm_protected_xattr(xattr_name) |
388 | && !posix_xattr_acl(xattr_name))) | |
66dbc325 MZ |
389 | return; |
390 | ||
523b74b1 DK |
391 | evm_reset_status(dentry->d_inode); |
392 | ||
66dbc325 | 393 | evm_update_evmxattr(dentry, xattr_name, xattr_value, xattr_value_len); |
66dbc325 MZ |
394 | } |
395 | ||
396 | /** | |
397 | * evm_inode_post_removexattr - update 'security.evm' after removing the xattr | |
398 | * @dentry: pointer to the affected dentry | |
399 | * @xattr_name: pointer to the affected extended attribute name | |
400 | * | |
401 | * Update the HMAC stored in 'security.evm' to reflect removal of the xattr. | |
7c51bb00 DK |
402 | * |
403 | * No need to take the i_mutex lock here, as this function is called from | |
404 | * vfs_removexattr() which takes the i_mutex. | |
66dbc325 MZ |
405 | */ |
406 | void evm_inode_post_removexattr(struct dentry *dentry, const char *xattr_name) | |
407 | { | |
66dbc325 MZ |
408 | if (!evm_initialized || !evm_protected_xattr(xattr_name)) |
409 | return; | |
410 | ||
523b74b1 DK |
411 | evm_reset_status(dentry->d_inode); |
412 | ||
66dbc325 | 413 | evm_update_evmxattr(dentry, xattr_name, NULL, 0); |
66dbc325 MZ |
414 | } |
415 | ||
817b54aa MZ |
416 | /** |
417 | * evm_inode_setattr - prevent updating an invalid EVM extended attribute | |
418 | * @dentry: pointer to the affected dentry | |
419 | */ | |
420 | int evm_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
421 | { | |
422 | unsigned int ia_valid = attr->ia_valid; | |
423 | enum integrity_status evm_status; | |
424 | ||
a924ce0b | 425 | if (!(ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID))) |
817b54aa MZ |
426 | return 0; |
427 | evm_status = evm_verify_current_integrity(dentry); | |
566be59a MZ |
428 | if ((evm_status == INTEGRITY_PASS) || |
429 | (evm_status == INTEGRITY_NOXATTRS)) | |
430 | return 0; | |
c6f493d6 | 431 | integrity_audit_msg(AUDIT_INTEGRITY_METADATA, d_backing_inode(dentry), |
9b97b6cd MZ |
432 | dentry->d_name.name, "appraise_metadata", |
433 | integrity_status_msg[evm_status], -EPERM, 0); | |
566be59a | 434 | return -EPERM; |
817b54aa MZ |
435 | } |
436 | ||
66dbc325 MZ |
437 | /** |
438 | * evm_inode_post_setattr - update 'security.evm' after modifying metadata | |
439 | * @dentry: pointer to the affected dentry | |
440 | * @ia_valid: for the UID and GID status | |
441 | * | |
442 | * For now, update the HMAC stored in 'security.evm' to reflect UID/GID | |
443 | * changes. | |
444 | * | |
445 | * This function is called from notify_change(), which expects the caller | |
446 | * to lock the inode's i_mutex. | |
447 | */ | |
448 | void evm_inode_post_setattr(struct dentry *dentry, int ia_valid) | |
449 | { | |
450 | if (!evm_initialized) | |
451 | return; | |
452 | ||
453 | if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID)) | |
454 | evm_update_evmxattr(dentry, NULL, NULL, 0); | |
66dbc325 MZ |
455 | } |
456 | ||
cb723180 MZ |
457 | /* |
458 | * evm_inode_init_security - initializes security.evm | |
459 | */ | |
460 | int evm_inode_init_security(struct inode *inode, | |
461 | const struct xattr *lsm_xattr, | |
462 | struct xattr *evm_xattr) | |
463 | { | |
464 | struct evm_ima_xattr_data *xattr_data; | |
465 | int rc; | |
466 | ||
467 | if (!evm_initialized || !evm_protected_xattr(lsm_xattr->name)) | |
5a4730ba | 468 | return 0; |
cb723180 MZ |
469 | |
470 | xattr_data = kzalloc(sizeof(*xattr_data), GFP_NOFS); | |
471 | if (!xattr_data) | |
472 | return -ENOMEM; | |
473 | ||
474 | xattr_data->type = EVM_XATTR_HMAC; | |
475 | rc = evm_init_hmac(inode, lsm_xattr, xattr_data->digest); | |
476 | if (rc < 0) | |
477 | goto out; | |
478 | ||
479 | evm_xattr->value = xattr_data; | |
480 | evm_xattr->value_len = sizeof(*xattr_data); | |
9548906b | 481 | evm_xattr->name = XATTR_EVM_SUFFIX; |
cb723180 MZ |
482 | return 0; |
483 | out: | |
484 | kfree(xattr_data); | |
485 | return rc; | |
486 | } | |
487 | EXPORT_SYMBOL_GPL(evm_inode_init_security); | |
488 | ||
2ce523eb DK |
489 | #ifdef CONFIG_EVM_LOAD_X509 |
490 | void __init evm_load_x509(void) | |
491 | { | |
26ddabfe DK |
492 | int rc; |
493 | ||
494 | rc = integrity_load_x509(INTEGRITY_KEYRING_EVM, CONFIG_EVM_X509_PATH); | |
495 | if (!rc) | |
496 | evm_initialized |= EVM_INIT_X509; | |
2ce523eb DK |
497 | } |
498 | #endif | |
499 | ||
66dbc325 MZ |
500 | static int __init init_evm(void) |
501 | { | |
502 | int error; | |
503 | ||
d3b33679 DK |
504 | evm_init_config(); |
505 | ||
f4dc3778 DK |
506 | error = integrity_init_keyring(INTEGRITY_KEYRING_EVM); |
507 | if (error) | |
508 | return error; | |
509 | ||
66dbc325 MZ |
510 | error = evm_init_secfs(); |
511 | if (error < 0) { | |
20ee451f | 512 | pr_info("Error registering secfs\n"); |
f4dc3778 | 513 | return error; |
66dbc325 | 514 | } |
15647eb3 DK |
515 | |
516 | return 0; | |
66dbc325 MZ |
517 | } |
518 | ||
66dbc325 MZ |
519 | /* |
520 | * evm_display_config - list the EVM protected security extended attributes | |
521 | */ | |
522 | static int __init evm_display_config(void) | |
523 | { | |
524 | char **xattrname; | |
525 | ||
526 | for (xattrname = evm_config_xattrnames; *xattrname != NULL; xattrname++) | |
20ee451f | 527 | pr_info("%s\n", *xattrname); |
66dbc325 MZ |
528 | return 0; |
529 | } | |
530 | ||
531 | pure_initcall(evm_display_config); | |
532 | late_initcall(init_evm); | |
533 | ||
534 | MODULE_DESCRIPTION("Extended Verification Module"); | |
535 | MODULE_LICENSE("GPL"); |