| 1 | /* |
| 2 | * Security plug functions |
| 3 | * |
| 4 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> |
| 5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> |
| 6 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> |
| 7 | * Copyright (C) 2016 Mellanox Technologies |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/bpf.h> |
| 16 | #include <linux/capability.h> |
| 17 | #include <linux/dcache.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/lsm_hooks.h> |
| 22 | #include <linux/integrity.h> |
| 23 | #include <linux/ima.h> |
| 24 | #include <linux/evm.h> |
| 25 | #include <linux/fsnotify.h> |
| 26 | #include <linux/mman.h> |
| 27 | #include <linux/mount.h> |
| 28 | #include <linux/personality.h> |
| 29 | #include <linux/backing-dev.h> |
| 30 | #include <linux/string.h> |
| 31 | #include <net/flow.h> |
| 32 | |
| 33 | #include <trace/events/initcall.h> |
| 34 | |
| 35 | #define MAX_LSM_EVM_XATTR 2 |
| 36 | |
| 37 | /* Maximum number of letters for an LSM name string */ |
| 38 | #define SECURITY_NAME_MAX 10 |
| 39 | |
| 40 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
| 41 | static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain); |
| 42 | |
| 43 | char *lsm_names; |
| 44 | /* Boot-time LSM user choice */ |
| 45 | static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = |
| 46 | CONFIG_DEFAULT_SECURITY; |
| 47 | |
| 48 | static void __init do_security_initcalls(void) |
| 49 | { |
| 50 | int ret; |
| 51 | initcall_t *call; |
| 52 | call = __security_initcall_start; |
| 53 | trace_initcall_level("security"); |
| 54 | while (call < __security_initcall_end) { |
| 55 | trace_initcall_start((*call)); |
| 56 | ret = (*call) (); |
| 57 | trace_initcall_finish((*call), ret); |
| 58 | call++; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * security_init - initializes the security framework |
| 64 | * |
| 65 | * This should be called early in the kernel initialization sequence. |
| 66 | */ |
| 67 | int __init security_init(void) |
| 68 | { |
| 69 | int i; |
| 70 | struct hlist_head *list = (struct hlist_head *) &security_hook_heads; |
| 71 | |
| 72 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head); |
| 73 | i++) |
| 74 | INIT_HLIST_HEAD(&list[i]); |
| 75 | pr_info("Security Framework initialized\n"); |
| 76 | |
| 77 | /* |
| 78 | * Load minor LSMs, with the capability module always first. |
| 79 | */ |
| 80 | capability_add_hooks(); |
| 81 | yama_add_hooks(); |
| 82 | loadpin_add_hooks(); |
| 83 | |
| 84 | /* |
| 85 | * Load all the remaining security modules. |
| 86 | */ |
| 87 | do_security_initcalls(); |
| 88 | |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | /* Save user chosen LSM */ |
| 93 | static int __init choose_lsm(char *str) |
| 94 | { |
| 95 | strncpy(chosen_lsm, str, SECURITY_NAME_MAX); |
| 96 | return 1; |
| 97 | } |
| 98 | __setup("security=", choose_lsm); |
| 99 | |
| 100 | static bool match_last_lsm(const char *list, const char *lsm) |
| 101 | { |
| 102 | const char *last; |
| 103 | |
| 104 | if (WARN_ON(!list || !lsm)) |
| 105 | return false; |
| 106 | last = strrchr(list, ','); |
| 107 | if (last) |
| 108 | /* Pass the comma, strcmp() will check for '\0' */ |
| 109 | last++; |
| 110 | else |
| 111 | last = list; |
| 112 | return !strcmp(last, lsm); |
| 113 | } |
| 114 | |
| 115 | static int lsm_append(char *new, char **result) |
| 116 | { |
| 117 | char *cp; |
| 118 | |
| 119 | if (*result == NULL) { |
| 120 | *result = kstrdup(new, GFP_KERNEL); |
| 121 | } else { |
| 122 | /* Check if it is the last registered name */ |
| 123 | if (match_last_lsm(*result, new)) |
| 124 | return 0; |
| 125 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
| 126 | if (cp == NULL) |
| 127 | return -ENOMEM; |
| 128 | kfree(*result); |
| 129 | *result = cp; |
| 130 | } |
| 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * security_module_enable - Load given security module on boot ? |
| 136 | * @module: the name of the module |
| 137 | * |
| 138 | * Each LSM must pass this method before registering its own operations |
| 139 | * to avoid security registration races. This method may also be used |
| 140 | * to check if your LSM is currently loaded during kernel initialization. |
| 141 | * |
| 142 | * Returns: |
| 143 | * |
| 144 | * true if: |
| 145 | * |
| 146 | * - The passed LSM is the one chosen by user at boot time, |
| 147 | * - or the passed LSM is configured as the default and the user did not |
| 148 | * choose an alternate LSM at boot time. |
| 149 | * |
| 150 | * Otherwise, return false. |
| 151 | */ |
| 152 | int __init security_module_enable(const char *module) |
| 153 | { |
| 154 | return !strcmp(module, chosen_lsm); |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * security_add_hooks - Add a modules hooks to the hook lists. |
| 159 | * @hooks: the hooks to add |
| 160 | * @count: the number of hooks to add |
| 161 | * @lsm: the name of the security module |
| 162 | * |
| 163 | * Each LSM has to register its hooks with the infrastructure. |
| 164 | */ |
| 165 | void __init security_add_hooks(struct security_hook_list *hooks, int count, |
| 166 | char *lsm) |
| 167 | { |
| 168 | int i; |
| 169 | |
| 170 | for (i = 0; i < count; i++) { |
| 171 | hooks[i].lsm = lsm; |
| 172 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
| 173 | } |
| 174 | if (lsm_append(lsm, &lsm_names) < 0) |
| 175 | panic("%s - Cannot get early memory.\n", __func__); |
| 176 | } |
| 177 | |
| 178 | int call_lsm_notifier(enum lsm_event event, void *data) |
| 179 | { |
| 180 | return atomic_notifier_call_chain(&lsm_notifier_chain, event, data); |
| 181 | } |
| 182 | EXPORT_SYMBOL(call_lsm_notifier); |
| 183 | |
| 184 | int register_lsm_notifier(struct notifier_block *nb) |
| 185 | { |
| 186 | return atomic_notifier_chain_register(&lsm_notifier_chain, nb); |
| 187 | } |
| 188 | EXPORT_SYMBOL(register_lsm_notifier); |
| 189 | |
| 190 | int unregister_lsm_notifier(struct notifier_block *nb) |
| 191 | { |
| 192 | return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb); |
| 193 | } |
| 194 | EXPORT_SYMBOL(unregister_lsm_notifier); |
| 195 | |
| 196 | /* |
| 197 | * Hook list operation macros. |
| 198 | * |
| 199 | * call_void_hook: |
| 200 | * This is a hook that does not return a value. |
| 201 | * |
| 202 | * call_int_hook: |
| 203 | * This is a hook that returns a value. |
| 204 | */ |
| 205 | |
| 206 | #define call_void_hook(FUNC, ...) \ |
| 207 | do { \ |
| 208 | struct security_hook_list *P; \ |
| 209 | \ |
| 210 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
| 211 | P->hook.FUNC(__VA_ARGS__); \ |
| 212 | } while (0) |
| 213 | |
| 214 | #define call_int_hook(FUNC, IRC, ...) ({ \ |
| 215 | int RC = IRC; \ |
| 216 | do { \ |
| 217 | struct security_hook_list *P; \ |
| 218 | \ |
| 219 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
| 220 | RC = P->hook.FUNC(__VA_ARGS__); \ |
| 221 | if (RC != 0) \ |
| 222 | break; \ |
| 223 | } \ |
| 224 | } while (0); \ |
| 225 | RC; \ |
| 226 | }) |
| 227 | |
| 228 | /* Security operations */ |
| 229 | |
| 230 | int security_binder_set_context_mgr(struct task_struct *mgr) |
| 231 | { |
| 232 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
| 233 | } |
| 234 | |
| 235 | int security_binder_transaction(struct task_struct *from, |
| 236 | struct task_struct *to) |
| 237 | { |
| 238 | return call_int_hook(binder_transaction, 0, from, to); |
| 239 | } |
| 240 | |
| 241 | int security_binder_transfer_binder(struct task_struct *from, |
| 242 | struct task_struct *to) |
| 243 | { |
| 244 | return call_int_hook(binder_transfer_binder, 0, from, to); |
| 245 | } |
| 246 | |
| 247 | int security_binder_transfer_file(struct task_struct *from, |
| 248 | struct task_struct *to, struct file *file) |
| 249 | { |
| 250 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
| 251 | } |
| 252 | |
| 253 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
| 254 | { |
| 255 | return call_int_hook(ptrace_access_check, 0, child, mode); |
| 256 | } |
| 257 | |
| 258 | int security_ptrace_traceme(struct task_struct *parent) |
| 259 | { |
| 260 | return call_int_hook(ptrace_traceme, 0, parent); |
| 261 | } |
| 262 | |
| 263 | int security_capget(struct task_struct *target, |
| 264 | kernel_cap_t *effective, |
| 265 | kernel_cap_t *inheritable, |
| 266 | kernel_cap_t *permitted) |
| 267 | { |
| 268 | return call_int_hook(capget, 0, target, |
| 269 | effective, inheritable, permitted); |
| 270 | } |
| 271 | |
| 272 | int security_capset(struct cred *new, const struct cred *old, |
| 273 | const kernel_cap_t *effective, |
| 274 | const kernel_cap_t *inheritable, |
| 275 | const kernel_cap_t *permitted) |
| 276 | { |
| 277 | return call_int_hook(capset, 0, new, old, |
| 278 | effective, inheritable, permitted); |
| 279 | } |
| 280 | |
| 281 | int security_capable(const struct cred *cred, struct user_namespace *ns, |
| 282 | int cap) |
| 283 | { |
| 284 | return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT); |
| 285 | } |
| 286 | |
| 287 | int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, |
| 288 | int cap) |
| 289 | { |
| 290 | return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT); |
| 291 | } |
| 292 | |
| 293 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
| 294 | { |
| 295 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
| 296 | } |
| 297 | |
| 298 | int security_quota_on(struct dentry *dentry) |
| 299 | { |
| 300 | return call_int_hook(quota_on, 0, dentry); |
| 301 | } |
| 302 | |
| 303 | int security_syslog(int type) |
| 304 | { |
| 305 | return call_int_hook(syslog, 0, type); |
| 306 | } |
| 307 | |
| 308 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
| 309 | { |
| 310 | return call_int_hook(settime, 0, ts, tz); |
| 311 | } |
| 312 | |
| 313 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
| 314 | { |
| 315 | struct security_hook_list *hp; |
| 316 | int cap_sys_admin = 1; |
| 317 | int rc; |
| 318 | |
| 319 | /* |
| 320 | * The module will respond with a positive value if |
| 321 | * it thinks the __vm_enough_memory() call should be |
| 322 | * made with the cap_sys_admin set. If all of the modules |
| 323 | * agree that it should be set it will. If any module |
| 324 | * thinks it should not be set it won't. |
| 325 | */ |
| 326 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
| 327 | rc = hp->hook.vm_enough_memory(mm, pages); |
| 328 | if (rc <= 0) { |
| 329 | cap_sys_admin = 0; |
| 330 | break; |
| 331 | } |
| 332 | } |
| 333 | return __vm_enough_memory(mm, pages, cap_sys_admin); |
| 334 | } |
| 335 | |
| 336 | int security_bprm_set_creds(struct linux_binprm *bprm) |
| 337 | { |
| 338 | return call_int_hook(bprm_set_creds, 0, bprm); |
| 339 | } |
| 340 | |
| 341 | int security_bprm_check(struct linux_binprm *bprm) |
| 342 | { |
| 343 | int ret; |
| 344 | |
| 345 | ret = call_int_hook(bprm_check_security, 0, bprm); |
| 346 | if (ret) |
| 347 | return ret; |
| 348 | return ima_bprm_check(bprm); |
| 349 | } |
| 350 | |
| 351 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
| 352 | { |
| 353 | call_void_hook(bprm_committing_creds, bprm); |
| 354 | } |
| 355 | |
| 356 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
| 357 | { |
| 358 | call_void_hook(bprm_committed_creds, bprm); |
| 359 | } |
| 360 | |
| 361 | int security_sb_alloc(struct super_block *sb) |
| 362 | { |
| 363 | return call_int_hook(sb_alloc_security, 0, sb); |
| 364 | } |
| 365 | |
| 366 | void security_sb_free(struct super_block *sb) |
| 367 | { |
| 368 | call_void_hook(sb_free_security, sb); |
| 369 | } |
| 370 | |
| 371 | int security_sb_copy_data(char *orig, char *copy) |
| 372 | { |
| 373 | return call_int_hook(sb_copy_data, 0, orig, copy); |
| 374 | } |
| 375 | EXPORT_SYMBOL(security_sb_copy_data); |
| 376 | |
| 377 | int security_sb_remount(struct super_block *sb, void *data) |
| 378 | { |
| 379 | return call_int_hook(sb_remount, 0, sb, data); |
| 380 | } |
| 381 | |
| 382 | int security_sb_kern_mount(struct super_block *sb, int flags, void *data) |
| 383 | { |
| 384 | return call_int_hook(sb_kern_mount, 0, sb, flags, data); |
| 385 | } |
| 386 | |
| 387 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
| 388 | { |
| 389 | return call_int_hook(sb_show_options, 0, m, sb); |
| 390 | } |
| 391 | |
| 392 | int security_sb_statfs(struct dentry *dentry) |
| 393 | { |
| 394 | return call_int_hook(sb_statfs, 0, dentry); |
| 395 | } |
| 396 | |
| 397 | int security_sb_mount(const char *dev_name, const struct path *path, |
| 398 | const char *type, unsigned long flags, void *data) |
| 399 | { |
| 400 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
| 401 | } |
| 402 | |
| 403 | int security_sb_umount(struct vfsmount *mnt, int flags) |
| 404 | { |
| 405 | return call_int_hook(sb_umount, 0, mnt, flags); |
| 406 | } |
| 407 | |
| 408 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
| 409 | { |
| 410 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
| 411 | } |
| 412 | |
| 413 | int security_sb_set_mnt_opts(struct super_block *sb, |
| 414 | struct security_mnt_opts *opts, |
| 415 | unsigned long kern_flags, |
| 416 | unsigned long *set_kern_flags) |
| 417 | { |
| 418 | return call_int_hook(sb_set_mnt_opts, |
| 419 | opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb, |
| 420 | opts, kern_flags, set_kern_flags); |
| 421 | } |
| 422 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
| 423 | |
| 424 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
| 425 | struct super_block *newsb, |
| 426 | unsigned long kern_flags, |
| 427 | unsigned long *set_kern_flags) |
| 428 | { |
| 429 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
| 430 | kern_flags, set_kern_flags); |
| 431 | } |
| 432 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
| 433 | |
| 434 | int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) |
| 435 | { |
| 436 | return call_int_hook(sb_parse_opts_str, 0, options, opts); |
| 437 | } |
| 438 | EXPORT_SYMBOL(security_sb_parse_opts_str); |
| 439 | |
| 440 | int security_inode_alloc(struct inode *inode) |
| 441 | { |
| 442 | inode->i_security = NULL; |
| 443 | return call_int_hook(inode_alloc_security, 0, inode); |
| 444 | } |
| 445 | |
| 446 | void security_inode_free(struct inode *inode) |
| 447 | { |
| 448 | integrity_inode_free(inode); |
| 449 | call_void_hook(inode_free_security, inode); |
| 450 | } |
| 451 | |
| 452 | int security_dentry_init_security(struct dentry *dentry, int mode, |
| 453 | const struct qstr *name, void **ctx, |
| 454 | u32 *ctxlen) |
| 455 | { |
| 456 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
| 457 | name, ctx, ctxlen); |
| 458 | } |
| 459 | EXPORT_SYMBOL(security_dentry_init_security); |
| 460 | |
| 461 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
| 462 | struct qstr *name, |
| 463 | const struct cred *old, struct cred *new) |
| 464 | { |
| 465 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, |
| 466 | name, old, new); |
| 467 | } |
| 468 | EXPORT_SYMBOL(security_dentry_create_files_as); |
| 469 | |
| 470 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
| 471 | const struct qstr *qstr, |
| 472 | const initxattrs initxattrs, void *fs_data) |
| 473 | { |
| 474 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
| 475 | struct xattr *lsm_xattr, *evm_xattr, *xattr; |
| 476 | int ret; |
| 477 | |
| 478 | if (unlikely(IS_PRIVATE(inode))) |
| 479 | return 0; |
| 480 | |
| 481 | if (!initxattrs) |
| 482 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
| 483 | dir, qstr, NULL, NULL, NULL); |
| 484 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
| 485 | lsm_xattr = new_xattrs; |
| 486 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
| 487 | &lsm_xattr->name, |
| 488 | &lsm_xattr->value, |
| 489 | &lsm_xattr->value_len); |
| 490 | if (ret) |
| 491 | goto out; |
| 492 | |
| 493 | evm_xattr = lsm_xattr + 1; |
| 494 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); |
| 495 | if (ret) |
| 496 | goto out; |
| 497 | ret = initxattrs(inode, new_xattrs, fs_data); |
| 498 | out: |
| 499 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
| 500 | kfree(xattr->value); |
| 501 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
| 502 | } |
| 503 | EXPORT_SYMBOL(security_inode_init_security); |
| 504 | |
| 505 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, |
| 506 | const struct qstr *qstr, const char **name, |
| 507 | void **value, size_t *len) |
| 508 | { |
| 509 | if (unlikely(IS_PRIVATE(inode))) |
| 510 | return -EOPNOTSUPP; |
| 511 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
| 512 | qstr, name, value, len); |
| 513 | } |
| 514 | EXPORT_SYMBOL(security_old_inode_init_security); |
| 515 | |
| 516 | #ifdef CONFIG_SECURITY_PATH |
| 517 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
| 518 | unsigned int dev) |
| 519 | { |
| 520 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| 521 | return 0; |
| 522 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
| 523 | } |
| 524 | EXPORT_SYMBOL(security_path_mknod); |
| 525 | |
| 526 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
| 527 | { |
| 528 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| 529 | return 0; |
| 530 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
| 531 | } |
| 532 | EXPORT_SYMBOL(security_path_mkdir); |
| 533 | |
| 534 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
| 535 | { |
| 536 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| 537 | return 0; |
| 538 | return call_int_hook(path_rmdir, 0, dir, dentry); |
| 539 | } |
| 540 | |
| 541 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
| 542 | { |
| 543 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| 544 | return 0; |
| 545 | return call_int_hook(path_unlink, 0, dir, dentry); |
| 546 | } |
| 547 | EXPORT_SYMBOL(security_path_unlink); |
| 548 | |
| 549 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
| 550 | const char *old_name) |
| 551 | { |
| 552 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| 553 | return 0; |
| 554 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
| 555 | } |
| 556 | |
| 557 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
| 558 | struct dentry *new_dentry) |
| 559 | { |
| 560 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
| 561 | return 0; |
| 562 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
| 563 | } |
| 564 | |
| 565 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
| 566 | const struct path *new_dir, struct dentry *new_dentry, |
| 567 | unsigned int flags) |
| 568 | { |
| 569 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
| 570 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) |
| 571 | return 0; |
| 572 | |
| 573 | if (flags & RENAME_EXCHANGE) { |
| 574 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
| 575 | old_dir, old_dentry); |
| 576 | if (err) |
| 577 | return err; |
| 578 | } |
| 579 | |
| 580 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
| 581 | new_dentry); |
| 582 | } |
| 583 | EXPORT_SYMBOL(security_path_rename); |
| 584 | |
| 585 | int security_path_truncate(const struct path *path) |
| 586 | { |
| 587 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
| 588 | return 0; |
| 589 | return call_int_hook(path_truncate, 0, path); |
| 590 | } |
| 591 | |
| 592 | int security_path_chmod(const struct path *path, umode_t mode) |
| 593 | { |
| 594 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
| 595 | return 0; |
| 596 | return call_int_hook(path_chmod, 0, path, mode); |
| 597 | } |
| 598 | |
| 599 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
| 600 | { |
| 601 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
| 602 | return 0; |
| 603 | return call_int_hook(path_chown, 0, path, uid, gid); |
| 604 | } |
| 605 | |
| 606 | int security_path_chroot(const struct path *path) |
| 607 | { |
| 608 | return call_int_hook(path_chroot, 0, path); |
| 609 | } |
| 610 | #endif |
| 611 | |
| 612 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
| 613 | { |
| 614 | if (unlikely(IS_PRIVATE(dir))) |
| 615 | return 0; |
| 616 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
| 617 | } |
| 618 | EXPORT_SYMBOL_GPL(security_inode_create); |
| 619 | |
| 620 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, |
| 621 | struct dentry *new_dentry) |
| 622 | { |
| 623 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
| 624 | return 0; |
| 625 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
| 626 | } |
| 627 | |
| 628 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) |
| 629 | { |
| 630 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| 631 | return 0; |
| 632 | return call_int_hook(inode_unlink, 0, dir, dentry); |
| 633 | } |
| 634 | |
| 635 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, |
| 636 | const char *old_name) |
| 637 | { |
| 638 | if (unlikely(IS_PRIVATE(dir))) |
| 639 | return 0; |
| 640 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
| 641 | } |
| 642 | |
| 643 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
| 644 | { |
| 645 | if (unlikely(IS_PRIVATE(dir))) |
| 646 | return 0; |
| 647 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
| 648 | } |
| 649 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
| 650 | |
| 651 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) |
| 652 | { |
| 653 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| 654 | return 0; |
| 655 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
| 656 | } |
| 657 | |
| 658 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
| 659 | { |
| 660 | if (unlikely(IS_PRIVATE(dir))) |
| 661 | return 0; |
| 662 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
| 663 | } |
| 664 | |
| 665 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, |
| 666 | struct inode *new_dir, struct dentry *new_dentry, |
| 667 | unsigned int flags) |
| 668 | { |
| 669 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
| 670 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) |
| 671 | return 0; |
| 672 | |
| 673 | if (flags & RENAME_EXCHANGE) { |
| 674 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
| 675 | old_dir, old_dentry); |
| 676 | if (err) |
| 677 | return err; |
| 678 | } |
| 679 | |
| 680 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
| 681 | new_dir, new_dentry); |
| 682 | } |
| 683 | |
| 684 | int security_inode_readlink(struct dentry *dentry) |
| 685 | { |
| 686 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| 687 | return 0; |
| 688 | return call_int_hook(inode_readlink, 0, dentry); |
| 689 | } |
| 690 | |
| 691 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
| 692 | bool rcu) |
| 693 | { |
| 694 | if (unlikely(IS_PRIVATE(inode))) |
| 695 | return 0; |
| 696 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
| 697 | } |
| 698 | |
| 699 | int security_inode_permission(struct inode *inode, int mask) |
| 700 | { |
| 701 | if (unlikely(IS_PRIVATE(inode))) |
| 702 | return 0; |
| 703 | return call_int_hook(inode_permission, 0, inode, mask); |
| 704 | } |
| 705 | |
| 706 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) |
| 707 | { |
| 708 | int ret; |
| 709 | |
| 710 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| 711 | return 0; |
| 712 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
| 713 | if (ret) |
| 714 | return ret; |
| 715 | return evm_inode_setattr(dentry, attr); |
| 716 | } |
| 717 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
| 718 | |
| 719 | int security_inode_getattr(const struct path *path) |
| 720 | { |
| 721 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
| 722 | return 0; |
| 723 | return call_int_hook(inode_getattr, 0, path); |
| 724 | } |
| 725 | |
| 726 | int security_inode_setxattr(struct dentry *dentry, const char *name, |
| 727 | const void *value, size_t size, int flags) |
| 728 | { |
| 729 | int ret; |
| 730 | |
| 731 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| 732 | return 0; |
| 733 | /* |
| 734 | * SELinux and Smack integrate the cap call, |
| 735 | * so assume that all LSMs supplying this call do so. |
| 736 | */ |
| 737 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, |
| 738 | flags); |
| 739 | |
| 740 | if (ret == 1) |
| 741 | ret = cap_inode_setxattr(dentry, name, value, size, flags); |
| 742 | if (ret) |
| 743 | return ret; |
| 744 | ret = ima_inode_setxattr(dentry, name, value, size); |
| 745 | if (ret) |
| 746 | return ret; |
| 747 | return evm_inode_setxattr(dentry, name, value, size); |
| 748 | } |
| 749 | |
| 750 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
| 751 | const void *value, size_t size, int flags) |
| 752 | { |
| 753 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| 754 | return; |
| 755 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
| 756 | evm_inode_post_setxattr(dentry, name, value, size); |
| 757 | } |
| 758 | |
| 759 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
| 760 | { |
| 761 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| 762 | return 0; |
| 763 | return call_int_hook(inode_getxattr, 0, dentry, name); |
| 764 | } |
| 765 | |
| 766 | int security_inode_listxattr(struct dentry *dentry) |
| 767 | { |
| 768 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| 769 | return 0; |
| 770 | return call_int_hook(inode_listxattr, 0, dentry); |
| 771 | } |
| 772 | |
| 773 | int security_inode_removexattr(struct dentry *dentry, const char *name) |
| 774 | { |
| 775 | int ret; |
| 776 | |
| 777 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| 778 | return 0; |
| 779 | /* |
| 780 | * SELinux and Smack integrate the cap call, |
| 781 | * so assume that all LSMs supplying this call do so. |
| 782 | */ |
| 783 | ret = call_int_hook(inode_removexattr, 1, dentry, name); |
| 784 | if (ret == 1) |
| 785 | ret = cap_inode_removexattr(dentry, name); |
| 786 | if (ret) |
| 787 | return ret; |
| 788 | ret = ima_inode_removexattr(dentry, name); |
| 789 | if (ret) |
| 790 | return ret; |
| 791 | return evm_inode_removexattr(dentry, name); |
| 792 | } |
| 793 | |
| 794 | int security_inode_need_killpriv(struct dentry *dentry) |
| 795 | { |
| 796 | return call_int_hook(inode_need_killpriv, 0, dentry); |
| 797 | } |
| 798 | |
| 799 | int security_inode_killpriv(struct dentry *dentry) |
| 800 | { |
| 801 | return call_int_hook(inode_killpriv, 0, dentry); |
| 802 | } |
| 803 | |
| 804 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
| 805 | { |
| 806 | struct security_hook_list *hp; |
| 807 | int rc; |
| 808 | |
| 809 | if (unlikely(IS_PRIVATE(inode))) |
| 810 | return -EOPNOTSUPP; |
| 811 | /* |
| 812 | * Only one module will provide an attribute with a given name. |
| 813 | */ |
| 814 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
| 815 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); |
| 816 | if (rc != -EOPNOTSUPP) |
| 817 | return rc; |
| 818 | } |
| 819 | return -EOPNOTSUPP; |
| 820 | } |
| 821 | |
| 822 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) |
| 823 | { |
| 824 | struct security_hook_list *hp; |
| 825 | int rc; |
| 826 | |
| 827 | if (unlikely(IS_PRIVATE(inode))) |
| 828 | return -EOPNOTSUPP; |
| 829 | /* |
| 830 | * Only one module will provide an attribute with a given name. |
| 831 | */ |
| 832 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
| 833 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
| 834 | flags); |
| 835 | if (rc != -EOPNOTSUPP) |
| 836 | return rc; |
| 837 | } |
| 838 | return -EOPNOTSUPP; |
| 839 | } |
| 840 | |
| 841 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) |
| 842 | { |
| 843 | if (unlikely(IS_PRIVATE(inode))) |
| 844 | return 0; |
| 845 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
| 846 | } |
| 847 | EXPORT_SYMBOL(security_inode_listsecurity); |
| 848 | |
| 849 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
| 850 | { |
| 851 | call_void_hook(inode_getsecid, inode, secid); |
| 852 | } |
| 853 | |
| 854 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
| 855 | { |
| 856 | return call_int_hook(inode_copy_up, 0, src, new); |
| 857 | } |
| 858 | EXPORT_SYMBOL(security_inode_copy_up); |
| 859 | |
| 860 | int security_inode_copy_up_xattr(const char *name) |
| 861 | { |
| 862 | return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name); |
| 863 | } |
| 864 | EXPORT_SYMBOL(security_inode_copy_up_xattr); |
| 865 | |
| 866 | int security_file_permission(struct file *file, int mask) |
| 867 | { |
| 868 | int ret; |
| 869 | |
| 870 | ret = call_int_hook(file_permission, 0, file, mask); |
| 871 | if (ret) |
| 872 | return ret; |
| 873 | |
| 874 | return fsnotify_perm(file, mask); |
| 875 | } |
| 876 | |
| 877 | int security_file_alloc(struct file *file) |
| 878 | { |
| 879 | return call_int_hook(file_alloc_security, 0, file); |
| 880 | } |
| 881 | |
| 882 | void security_file_free(struct file *file) |
| 883 | { |
| 884 | call_void_hook(file_free_security, file); |
| 885 | } |
| 886 | |
| 887 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 888 | { |
| 889 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
| 890 | } |
| 891 | |
| 892 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
| 893 | { |
| 894 | /* |
| 895 | * Does we have PROT_READ and does the application expect |
| 896 | * it to imply PROT_EXEC? If not, nothing to talk about... |
| 897 | */ |
| 898 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
| 899 | return prot; |
| 900 | if (!(current->personality & READ_IMPLIES_EXEC)) |
| 901 | return prot; |
| 902 | /* |
| 903 | * if that's an anonymous mapping, let it. |
| 904 | */ |
| 905 | if (!file) |
| 906 | return prot | PROT_EXEC; |
| 907 | /* |
| 908 | * ditto if it's not on noexec mount, except that on !MMU we need |
| 909 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
| 910 | */ |
| 911 | if (!path_noexec(&file->f_path)) { |
| 912 | #ifndef CONFIG_MMU |
| 913 | if (file->f_op->mmap_capabilities) { |
| 914 | unsigned caps = file->f_op->mmap_capabilities(file); |
| 915 | if (!(caps & NOMMU_MAP_EXEC)) |
| 916 | return prot; |
| 917 | } |
| 918 | #endif |
| 919 | return prot | PROT_EXEC; |
| 920 | } |
| 921 | /* anything on noexec mount won't get PROT_EXEC */ |
| 922 | return prot; |
| 923 | } |
| 924 | |
| 925 | int security_mmap_file(struct file *file, unsigned long prot, |
| 926 | unsigned long flags) |
| 927 | { |
| 928 | int ret; |
| 929 | ret = call_int_hook(mmap_file, 0, file, prot, |
| 930 | mmap_prot(file, prot), flags); |
| 931 | if (ret) |
| 932 | return ret; |
| 933 | return ima_file_mmap(file, prot); |
| 934 | } |
| 935 | |
| 936 | int security_mmap_addr(unsigned long addr) |
| 937 | { |
| 938 | return call_int_hook(mmap_addr, 0, addr); |
| 939 | } |
| 940 | |
| 941 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
| 942 | unsigned long prot) |
| 943 | { |
| 944 | return call_int_hook(file_mprotect, 0, vma, reqprot, prot); |
| 945 | } |
| 946 | |
| 947 | int security_file_lock(struct file *file, unsigned int cmd) |
| 948 | { |
| 949 | return call_int_hook(file_lock, 0, file, cmd); |
| 950 | } |
| 951 | |
| 952 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) |
| 953 | { |
| 954 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
| 955 | } |
| 956 | |
| 957 | void security_file_set_fowner(struct file *file) |
| 958 | { |
| 959 | call_void_hook(file_set_fowner, file); |
| 960 | } |
| 961 | |
| 962 | int security_file_send_sigiotask(struct task_struct *tsk, |
| 963 | struct fown_struct *fown, int sig) |
| 964 | { |
| 965 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
| 966 | } |
| 967 | |
| 968 | int security_file_receive(struct file *file) |
| 969 | { |
| 970 | return call_int_hook(file_receive, 0, file); |
| 971 | } |
| 972 | |
| 973 | int security_file_open(struct file *file, const struct cred *cred) |
| 974 | { |
| 975 | int ret; |
| 976 | |
| 977 | ret = call_int_hook(file_open, 0, file, cred); |
| 978 | if (ret) |
| 979 | return ret; |
| 980 | |
| 981 | return fsnotify_perm(file, MAY_OPEN); |
| 982 | } |
| 983 | |
| 984 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
| 985 | { |
| 986 | return call_int_hook(task_alloc, 0, task, clone_flags); |
| 987 | } |
| 988 | |
| 989 | void security_task_free(struct task_struct *task) |
| 990 | { |
| 991 | call_void_hook(task_free, task); |
| 992 | } |
| 993 | |
| 994 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
| 995 | { |
| 996 | return call_int_hook(cred_alloc_blank, 0, cred, gfp); |
| 997 | } |
| 998 | |
| 999 | void security_cred_free(struct cred *cred) |
| 1000 | { |
| 1001 | call_void_hook(cred_free, cred); |
| 1002 | } |
| 1003 | |
| 1004 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
| 1005 | { |
| 1006 | return call_int_hook(cred_prepare, 0, new, old, gfp); |
| 1007 | } |
| 1008 | |
| 1009 | void security_transfer_creds(struct cred *new, const struct cred *old) |
| 1010 | { |
| 1011 | call_void_hook(cred_transfer, new, old); |
| 1012 | } |
| 1013 | |
| 1014 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
| 1015 | { |
| 1016 | *secid = 0; |
| 1017 | call_void_hook(cred_getsecid, c, secid); |
| 1018 | } |
| 1019 | EXPORT_SYMBOL(security_cred_getsecid); |
| 1020 | |
| 1021 | int security_kernel_act_as(struct cred *new, u32 secid) |
| 1022 | { |
| 1023 | return call_int_hook(kernel_act_as, 0, new, secid); |
| 1024 | } |
| 1025 | |
| 1026 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) |
| 1027 | { |
| 1028 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
| 1029 | } |
| 1030 | |
| 1031 | int security_kernel_module_request(char *kmod_name) |
| 1032 | { |
| 1033 | return call_int_hook(kernel_module_request, 0, kmod_name); |
| 1034 | } |
| 1035 | |
| 1036 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id) |
| 1037 | { |
| 1038 | int ret; |
| 1039 | |
| 1040 | ret = call_int_hook(kernel_read_file, 0, file, id); |
| 1041 | if (ret) |
| 1042 | return ret; |
| 1043 | return ima_read_file(file, id); |
| 1044 | } |
| 1045 | EXPORT_SYMBOL_GPL(security_kernel_read_file); |
| 1046 | |
| 1047 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
| 1048 | enum kernel_read_file_id id) |
| 1049 | { |
| 1050 | int ret; |
| 1051 | |
| 1052 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); |
| 1053 | if (ret) |
| 1054 | return ret; |
| 1055 | return ima_post_read_file(file, buf, size, id); |
| 1056 | } |
| 1057 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); |
| 1058 | |
| 1059 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
| 1060 | int flags) |
| 1061 | { |
| 1062 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
| 1063 | } |
| 1064 | |
| 1065 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
| 1066 | { |
| 1067 | return call_int_hook(task_setpgid, 0, p, pgid); |
| 1068 | } |
| 1069 | |
| 1070 | int security_task_getpgid(struct task_struct *p) |
| 1071 | { |
| 1072 | return call_int_hook(task_getpgid, 0, p); |
| 1073 | } |
| 1074 | |
| 1075 | int security_task_getsid(struct task_struct *p) |
| 1076 | { |
| 1077 | return call_int_hook(task_getsid, 0, p); |
| 1078 | } |
| 1079 | |
| 1080 | void security_task_getsecid(struct task_struct *p, u32 *secid) |
| 1081 | { |
| 1082 | *secid = 0; |
| 1083 | call_void_hook(task_getsecid, p, secid); |
| 1084 | } |
| 1085 | EXPORT_SYMBOL(security_task_getsecid); |
| 1086 | |
| 1087 | int security_task_setnice(struct task_struct *p, int nice) |
| 1088 | { |
| 1089 | return call_int_hook(task_setnice, 0, p, nice); |
| 1090 | } |
| 1091 | |
| 1092 | int security_task_setioprio(struct task_struct *p, int ioprio) |
| 1093 | { |
| 1094 | return call_int_hook(task_setioprio, 0, p, ioprio); |
| 1095 | } |
| 1096 | |
| 1097 | int security_task_getioprio(struct task_struct *p) |
| 1098 | { |
| 1099 | return call_int_hook(task_getioprio, 0, p); |
| 1100 | } |
| 1101 | |
| 1102 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
| 1103 | unsigned int flags) |
| 1104 | { |
| 1105 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); |
| 1106 | } |
| 1107 | |
| 1108 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
| 1109 | struct rlimit *new_rlim) |
| 1110 | { |
| 1111 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
| 1112 | } |
| 1113 | |
| 1114 | int security_task_setscheduler(struct task_struct *p) |
| 1115 | { |
| 1116 | return call_int_hook(task_setscheduler, 0, p); |
| 1117 | } |
| 1118 | |
| 1119 | int security_task_getscheduler(struct task_struct *p) |
| 1120 | { |
| 1121 | return call_int_hook(task_getscheduler, 0, p); |
| 1122 | } |
| 1123 | |
| 1124 | int security_task_movememory(struct task_struct *p) |
| 1125 | { |
| 1126 | return call_int_hook(task_movememory, 0, p); |
| 1127 | } |
| 1128 | |
| 1129 | int security_task_kill(struct task_struct *p, struct siginfo *info, |
| 1130 | int sig, const struct cred *cred) |
| 1131 | { |
| 1132 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
| 1133 | } |
| 1134 | |
| 1135 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
| 1136 | unsigned long arg4, unsigned long arg5) |
| 1137 | { |
| 1138 | int thisrc; |
| 1139 | int rc = -ENOSYS; |
| 1140 | struct security_hook_list *hp; |
| 1141 | |
| 1142 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
| 1143 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
| 1144 | if (thisrc != -ENOSYS) { |
| 1145 | rc = thisrc; |
| 1146 | if (thisrc != 0) |
| 1147 | break; |
| 1148 | } |
| 1149 | } |
| 1150 | return rc; |
| 1151 | } |
| 1152 | |
| 1153 | void security_task_to_inode(struct task_struct *p, struct inode *inode) |
| 1154 | { |
| 1155 | call_void_hook(task_to_inode, p, inode); |
| 1156 | } |
| 1157 | |
| 1158 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) |
| 1159 | { |
| 1160 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
| 1161 | } |
| 1162 | |
| 1163 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
| 1164 | { |
| 1165 | *secid = 0; |
| 1166 | call_void_hook(ipc_getsecid, ipcp, secid); |
| 1167 | } |
| 1168 | |
| 1169 | int security_msg_msg_alloc(struct msg_msg *msg) |
| 1170 | { |
| 1171 | return call_int_hook(msg_msg_alloc_security, 0, msg); |
| 1172 | } |
| 1173 | |
| 1174 | void security_msg_msg_free(struct msg_msg *msg) |
| 1175 | { |
| 1176 | call_void_hook(msg_msg_free_security, msg); |
| 1177 | } |
| 1178 | |
| 1179 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
| 1180 | { |
| 1181 | return call_int_hook(msg_queue_alloc_security, 0, msq); |
| 1182 | } |
| 1183 | |
| 1184 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
| 1185 | { |
| 1186 | call_void_hook(msg_queue_free_security, msq); |
| 1187 | } |
| 1188 | |
| 1189 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
| 1190 | { |
| 1191 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
| 1192 | } |
| 1193 | |
| 1194 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
| 1195 | { |
| 1196 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
| 1197 | } |
| 1198 | |
| 1199 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
| 1200 | struct msg_msg *msg, int msqflg) |
| 1201 | { |
| 1202 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
| 1203 | } |
| 1204 | |
| 1205 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
| 1206 | struct task_struct *target, long type, int mode) |
| 1207 | { |
| 1208 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
| 1209 | } |
| 1210 | |
| 1211 | int security_shm_alloc(struct kern_ipc_perm *shp) |
| 1212 | { |
| 1213 | return call_int_hook(shm_alloc_security, 0, shp); |
| 1214 | } |
| 1215 | |
| 1216 | void security_shm_free(struct kern_ipc_perm *shp) |
| 1217 | { |
| 1218 | call_void_hook(shm_free_security, shp); |
| 1219 | } |
| 1220 | |
| 1221 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
| 1222 | { |
| 1223 | return call_int_hook(shm_associate, 0, shp, shmflg); |
| 1224 | } |
| 1225 | |
| 1226 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
| 1227 | { |
| 1228 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
| 1229 | } |
| 1230 | |
| 1231 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
| 1232 | { |
| 1233 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
| 1234 | } |
| 1235 | |
| 1236 | int security_sem_alloc(struct kern_ipc_perm *sma) |
| 1237 | { |
| 1238 | return call_int_hook(sem_alloc_security, 0, sma); |
| 1239 | } |
| 1240 | |
| 1241 | void security_sem_free(struct kern_ipc_perm *sma) |
| 1242 | { |
| 1243 | call_void_hook(sem_free_security, sma); |
| 1244 | } |
| 1245 | |
| 1246 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
| 1247 | { |
| 1248 | return call_int_hook(sem_associate, 0, sma, semflg); |
| 1249 | } |
| 1250 | |
| 1251 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
| 1252 | { |
| 1253 | return call_int_hook(sem_semctl, 0, sma, cmd); |
| 1254 | } |
| 1255 | |
| 1256 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
| 1257 | unsigned nsops, int alter) |
| 1258 | { |
| 1259 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
| 1260 | } |
| 1261 | |
| 1262 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) |
| 1263 | { |
| 1264 | if (unlikely(inode && IS_PRIVATE(inode))) |
| 1265 | return; |
| 1266 | call_void_hook(d_instantiate, dentry, inode); |
| 1267 | } |
| 1268 | EXPORT_SYMBOL(security_d_instantiate); |
| 1269 | |
| 1270 | int security_getprocattr(struct task_struct *p, char *name, char **value) |
| 1271 | { |
| 1272 | return call_int_hook(getprocattr, -EINVAL, p, name, value); |
| 1273 | } |
| 1274 | |
| 1275 | int security_setprocattr(const char *name, void *value, size_t size) |
| 1276 | { |
| 1277 | return call_int_hook(setprocattr, -EINVAL, name, value, size); |
| 1278 | } |
| 1279 | |
| 1280 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) |
| 1281 | { |
| 1282 | return call_int_hook(netlink_send, 0, sk, skb); |
| 1283 | } |
| 1284 | |
| 1285 | int security_ismaclabel(const char *name) |
| 1286 | { |
| 1287 | return call_int_hook(ismaclabel, 0, name); |
| 1288 | } |
| 1289 | EXPORT_SYMBOL(security_ismaclabel); |
| 1290 | |
| 1291 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
| 1292 | { |
| 1293 | return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata, |
| 1294 | seclen); |
| 1295 | } |
| 1296 | EXPORT_SYMBOL(security_secid_to_secctx); |
| 1297 | |
| 1298 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
| 1299 | { |
| 1300 | *secid = 0; |
| 1301 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
| 1302 | } |
| 1303 | EXPORT_SYMBOL(security_secctx_to_secid); |
| 1304 | |
| 1305 | void security_release_secctx(char *secdata, u32 seclen) |
| 1306 | { |
| 1307 | call_void_hook(release_secctx, secdata, seclen); |
| 1308 | } |
| 1309 | EXPORT_SYMBOL(security_release_secctx); |
| 1310 | |
| 1311 | void security_inode_invalidate_secctx(struct inode *inode) |
| 1312 | { |
| 1313 | call_void_hook(inode_invalidate_secctx, inode); |
| 1314 | } |
| 1315 | EXPORT_SYMBOL(security_inode_invalidate_secctx); |
| 1316 | |
| 1317 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
| 1318 | { |
| 1319 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
| 1320 | } |
| 1321 | EXPORT_SYMBOL(security_inode_notifysecctx); |
| 1322 | |
| 1323 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) |
| 1324 | { |
| 1325 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
| 1326 | } |
| 1327 | EXPORT_SYMBOL(security_inode_setsecctx); |
| 1328 | |
| 1329 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) |
| 1330 | { |
| 1331 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
| 1332 | } |
| 1333 | EXPORT_SYMBOL(security_inode_getsecctx); |
| 1334 | |
| 1335 | #ifdef CONFIG_SECURITY_NETWORK |
| 1336 | |
| 1337 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
| 1338 | { |
| 1339 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
| 1340 | } |
| 1341 | EXPORT_SYMBOL(security_unix_stream_connect); |
| 1342 | |
| 1343 | int security_unix_may_send(struct socket *sock, struct socket *other) |
| 1344 | { |
| 1345 | return call_int_hook(unix_may_send, 0, sock, other); |
| 1346 | } |
| 1347 | EXPORT_SYMBOL(security_unix_may_send); |
| 1348 | |
| 1349 | int security_socket_create(int family, int type, int protocol, int kern) |
| 1350 | { |
| 1351 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
| 1352 | } |
| 1353 | |
| 1354 | int security_socket_post_create(struct socket *sock, int family, |
| 1355 | int type, int protocol, int kern) |
| 1356 | { |
| 1357 | return call_int_hook(socket_post_create, 0, sock, family, type, |
| 1358 | protocol, kern); |
| 1359 | } |
| 1360 | |
| 1361 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
| 1362 | { |
| 1363 | return call_int_hook(socket_socketpair, 0, socka, sockb); |
| 1364 | } |
| 1365 | EXPORT_SYMBOL(security_socket_socketpair); |
| 1366 | |
| 1367 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
| 1368 | { |
| 1369 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
| 1370 | } |
| 1371 | |
| 1372 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) |
| 1373 | { |
| 1374 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
| 1375 | } |
| 1376 | |
| 1377 | int security_socket_listen(struct socket *sock, int backlog) |
| 1378 | { |
| 1379 | return call_int_hook(socket_listen, 0, sock, backlog); |
| 1380 | } |
| 1381 | |
| 1382 | int security_socket_accept(struct socket *sock, struct socket *newsock) |
| 1383 | { |
| 1384 | return call_int_hook(socket_accept, 0, sock, newsock); |
| 1385 | } |
| 1386 | |
| 1387 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
| 1388 | { |
| 1389 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
| 1390 | } |
| 1391 | |
| 1392 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, |
| 1393 | int size, int flags) |
| 1394 | { |
| 1395 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
| 1396 | } |
| 1397 | |
| 1398 | int security_socket_getsockname(struct socket *sock) |
| 1399 | { |
| 1400 | return call_int_hook(socket_getsockname, 0, sock); |
| 1401 | } |
| 1402 | |
| 1403 | int security_socket_getpeername(struct socket *sock) |
| 1404 | { |
| 1405 | return call_int_hook(socket_getpeername, 0, sock); |
| 1406 | } |
| 1407 | |
| 1408 | int security_socket_getsockopt(struct socket *sock, int level, int optname) |
| 1409 | { |
| 1410 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
| 1411 | } |
| 1412 | |
| 1413 | int security_socket_setsockopt(struct socket *sock, int level, int optname) |
| 1414 | { |
| 1415 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
| 1416 | } |
| 1417 | |
| 1418 | int security_socket_shutdown(struct socket *sock, int how) |
| 1419 | { |
| 1420 | return call_int_hook(socket_shutdown, 0, sock, how); |
| 1421 | } |
| 1422 | |
| 1423 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) |
| 1424 | { |
| 1425 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
| 1426 | } |
| 1427 | EXPORT_SYMBOL(security_sock_rcv_skb); |
| 1428 | |
| 1429 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, |
| 1430 | int __user *optlen, unsigned len) |
| 1431 | { |
| 1432 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
| 1433 | optval, optlen, len); |
| 1434 | } |
| 1435 | |
| 1436 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) |
| 1437 | { |
| 1438 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
| 1439 | skb, secid); |
| 1440 | } |
| 1441 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); |
| 1442 | |
| 1443 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) |
| 1444 | { |
| 1445 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
| 1446 | } |
| 1447 | |
| 1448 | void security_sk_free(struct sock *sk) |
| 1449 | { |
| 1450 | call_void_hook(sk_free_security, sk); |
| 1451 | } |
| 1452 | |
| 1453 | void security_sk_clone(const struct sock *sk, struct sock *newsk) |
| 1454 | { |
| 1455 | call_void_hook(sk_clone_security, sk, newsk); |
| 1456 | } |
| 1457 | EXPORT_SYMBOL(security_sk_clone); |
| 1458 | |
| 1459 | void security_sk_classify_flow(struct sock *sk, struct flowi *fl) |
| 1460 | { |
| 1461 | call_void_hook(sk_getsecid, sk, &fl->flowi_secid); |
| 1462 | } |
| 1463 | EXPORT_SYMBOL(security_sk_classify_flow); |
| 1464 | |
| 1465 | void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) |
| 1466 | { |
| 1467 | call_void_hook(req_classify_flow, req, fl); |
| 1468 | } |
| 1469 | EXPORT_SYMBOL(security_req_classify_flow); |
| 1470 | |
| 1471 | void security_sock_graft(struct sock *sk, struct socket *parent) |
| 1472 | { |
| 1473 | call_void_hook(sock_graft, sk, parent); |
| 1474 | } |
| 1475 | EXPORT_SYMBOL(security_sock_graft); |
| 1476 | |
| 1477 | int security_inet_conn_request(struct sock *sk, |
| 1478 | struct sk_buff *skb, struct request_sock *req) |
| 1479 | { |
| 1480 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
| 1481 | } |
| 1482 | EXPORT_SYMBOL(security_inet_conn_request); |
| 1483 | |
| 1484 | void security_inet_csk_clone(struct sock *newsk, |
| 1485 | const struct request_sock *req) |
| 1486 | { |
| 1487 | call_void_hook(inet_csk_clone, newsk, req); |
| 1488 | } |
| 1489 | |
| 1490 | void security_inet_conn_established(struct sock *sk, |
| 1491 | struct sk_buff *skb) |
| 1492 | { |
| 1493 | call_void_hook(inet_conn_established, sk, skb); |
| 1494 | } |
| 1495 | EXPORT_SYMBOL(security_inet_conn_established); |
| 1496 | |
| 1497 | int security_secmark_relabel_packet(u32 secid) |
| 1498 | { |
| 1499 | return call_int_hook(secmark_relabel_packet, 0, secid); |
| 1500 | } |
| 1501 | EXPORT_SYMBOL(security_secmark_relabel_packet); |
| 1502 | |
| 1503 | void security_secmark_refcount_inc(void) |
| 1504 | { |
| 1505 | call_void_hook(secmark_refcount_inc); |
| 1506 | } |
| 1507 | EXPORT_SYMBOL(security_secmark_refcount_inc); |
| 1508 | |
| 1509 | void security_secmark_refcount_dec(void) |
| 1510 | { |
| 1511 | call_void_hook(secmark_refcount_dec); |
| 1512 | } |
| 1513 | EXPORT_SYMBOL(security_secmark_refcount_dec); |
| 1514 | |
| 1515 | int security_tun_dev_alloc_security(void **security) |
| 1516 | { |
| 1517 | return call_int_hook(tun_dev_alloc_security, 0, security); |
| 1518 | } |
| 1519 | EXPORT_SYMBOL(security_tun_dev_alloc_security); |
| 1520 | |
| 1521 | void security_tun_dev_free_security(void *security) |
| 1522 | { |
| 1523 | call_void_hook(tun_dev_free_security, security); |
| 1524 | } |
| 1525 | EXPORT_SYMBOL(security_tun_dev_free_security); |
| 1526 | |
| 1527 | int security_tun_dev_create(void) |
| 1528 | { |
| 1529 | return call_int_hook(tun_dev_create, 0); |
| 1530 | } |
| 1531 | EXPORT_SYMBOL(security_tun_dev_create); |
| 1532 | |
| 1533 | int security_tun_dev_attach_queue(void *security) |
| 1534 | { |
| 1535 | return call_int_hook(tun_dev_attach_queue, 0, security); |
| 1536 | } |
| 1537 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
| 1538 | |
| 1539 | int security_tun_dev_attach(struct sock *sk, void *security) |
| 1540 | { |
| 1541 | return call_int_hook(tun_dev_attach, 0, sk, security); |
| 1542 | } |
| 1543 | EXPORT_SYMBOL(security_tun_dev_attach); |
| 1544 | |
| 1545 | int security_tun_dev_open(void *security) |
| 1546 | { |
| 1547 | return call_int_hook(tun_dev_open, 0, security); |
| 1548 | } |
| 1549 | EXPORT_SYMBOL(security_tun_dev_open); |
| 1550 | |
| 1551 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
| 1552 | { |
| 1553 | return call_int_hook(sctp_assoc_request, 0, ep, skb); |
| 1554 | } |
| 1555 | EXPORT_SYMBOL(security_sctp_assoc_request); |
| 1556 | |
| 1557 | int security_sctp_bind_connect(struct sock *sk, int optname, |
| 1558 | struct sockaddr *address, int addrlen) |
| 1559 | { |
| 1560 | return call_int_hook(sctp_bind_connect, 0, sk, optname, |
| 1561 | address, addrlen); |
| 1562 | } |
| 1563 | EXPORT_SYMBOL(security_sctp_bind_connect); |
| 1564 | |
| 1565 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, |
| 1566 | struct sock *newsk) |
| 1567 | { |
| 1568 | call_void_hook(sctp_sk_clone, ep, sk, newsk); |
| 1569 | } |
| 1570 | EXPORT_SYMBOL(security_sctp_sk_clone); |
| 1571 | |
| 1572 | #endif /* CONFIG_SECURITY_NETWORK */ |
| 1573 | |
| 1574 | #ifdef CONFIG_SECURITY_INFINIBAND |
| 1575 | |
| 1576 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) |
| 1577 | { |
| 1578 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); |
| 1579 | } |
| 1580 | EXPORT_SYMBOL(security_ib_pkey_access); |
| 1581 | |
| 1582 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
| 1583 | { |
| 1584 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); |
| 1585 | } |
| 1586 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); |
| 1587 | |
| 1588 | int security_ib_alloc_security(void **sec) |
| 1589 | { |
| 1590 | return call_int_hook(ib_alloc_security, 0, sec); |
| 1591 | } |
| 1592 | EXPORT_SYMBOL(security_ib_alloc_security); |
| 1593 | |
| 1594 | void security_ib_free_security(void *sec) |
| 1595 | { |
| 1596 | call_void_hook(ib_free_security, sec); |
| 1597 | } |
| 1598 | EXPORT_SYMBOL(security_ib_free_security); |
| 1599 | #endif /* CONFIG_SECURITY_INFINIBAND */ |
| 1600 | |
| 1601 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
| 1602 | |
| 1603 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
| 1604 | struct xfrm_user_sec_ctx *sec_ctx, |
| 1605 | gfp_t gfp) |
| 1606 | { |
| 1607 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
| 1608 | } |
| 1609 | EXPORT_SYMBOL(security_xfrm_policy_alloc); |
| 1610 | |
| 1611 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
| 1612 | struct xfrm_sec_ctx **new_ctxp) |
| 1613 | { |
| 1614 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
| 1615 | } |
| 1616 | |
| 1617 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
| 1618 | { |
| 1619 | call_void_hook(xfrm_policy_free_security, ctx); |
| 1620 | } |
| 1621 | EXPORT_SYMBOL(security_xfrm_policy_free); |
| 1622 | |
| 1623 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
| 1624 | { |
| 1625 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
| 1626 | } |
| 1627 | |
| 1628 | int security_xfrm_state_alloc(struct xfrm_state *x, |
| 1629 | struct xfrm_user_sec_ctx *sec_ctx) |
| 1630 | { |
| 1631 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
| 1632 | } |
| 1633 | EXPORT_SYMBOL(security_xfrm_state_alloc); |
| 1634 | |
| 1635 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, |
| 1636 | struct xfrm_sec_ctx *polsec, u32 secid) |
| 1637 | { |
| 1638 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
| 1639 | } |
| 1640 | |
| 1641 | int security_xfrm_state_delete(struct xfrm_state *x) |
| 1642 | { |
| 1643 | return call_int_hook(xfrm_state_delete_security, 0, x); |
| 1644 | } |
| 1645 | EXPORT_SYMBOL(security_xfrm_state_delete); |
| 1646 | |
| 1647 | void security_xfrm_state_free(struct xfrm_state *x) |
| 1648 | { |
| 1649 | call_void_hook(xfrm_state_free_security, x); |
| 1650 | } |
| 1651 | |
| 1652 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
| 1653 | { |
| 1654 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
| 1655 | } |
| 1656 | |
| 1657 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, |
| 1658 | struct xfrm_policy *xp, |
| 1659 | const struct flowi *fl) |
| 1660 | { |
| 1661 | struct security_hook_list *hp; |
| 1662 | int rc = 1; |
| 1663 | |
| 1664 | /* |
| 1665 | * Since this function is expected to return 0 or 1, the judgment |
| 1666 | * becomes difficult if multiple LSMs supply this call. Fortunately, |
| 1667 | * we can use the first LSM's judgment because currently only SELinux |
| 1668 | * supplies this call. |
| 1669 | * |
| 1670 | * For speed optimization, we explicitly break the loop rather than |
| 1671 | * using the macro |
| 1672 | */ |
| 1673 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
| 1674 | list) { |
| 1675 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); |
| 1676 | break; |
| 1677 | } |
| 1678 | return rc; |
| 1679 | } |
| 1680 | |
| 1681 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) |
| 1682 | { |
| 1683 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
| 1684 | } |
| 1685 | |
| 1686 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) |
| 1687 | { |
| 1688 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, |
| 1689 | 0); |
| 1690 | |
| 1691 | BUG_ON(rc); |
| 1692 | } |
| 1693 | EXPORT_SYMBOL(security_skb_classify_flow); |
| 1694 | |
| 1695 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ |
| 1696 | |
| 1697 | #ifdef CONFIG_KEYS |
| 1698 | |
| 1699 | int security_key_alloc(struct key *key, const struct cred *cred, |
| 1700 | unsigned long flags) |
| 1701 | { |
| 1702 | return call_int_hook(key_alloc, 0, key, cred, flags); |
| 1703 | } |
| 1704 | |
| 1705 | void security_key_free(struct key *key) |
| 1706 | { |
| 1707 | call_void_hook(key_free, key); |
| 1708 | } |
| 1709 | |
| 1710 | int security_key_permission(key_ref_t key_ref, |
| 1711 | const struct cred *cred, unsigned perm) |
| 1712 | { |
| 1713 | return call_int_hook(key_permission, 0, key_ref, cred, perm); |
| 1714 | } |
| 1715 | |
| 1716 | int security_key_getsecurity(struct key *key, char **_buffer) |
| 1717 | { |
| 1718 | *_buffer = NULL; |
| 1719 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
| 1720 | } |
| 1721 | |
| 1722 | #endif /* CONFIG_KEYS */ |
| 1723 | |
| 1724 | #ifdef CONFIG_AUDIT |
| 1725 | |
| 1726 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) |
| 1727 | { |
| 1728 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
| 1729 | } |
| 1730 | |
| 1731 | int security_audit_rule_known(struct audit_krule *krule) |
| 1732 | { |
| 1733 | return call_int_hook(audit_rule_known, 0, krule); |
| 1734 | } |
| 1735 | |
| 1736 | void security_audit_rule_free(void *lsmrule) |
| 1737 | { |
| 1738 | call_void_hook(audit_rule_free, lsmrule); |
| 1739 | } |
| 1740 | |
| 1741 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, |
| 1742 | struct audit_context *actx) |
| 1743 | { |
| 1744 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule, |
| 1745 | actx); |
| 1746 | } |
| 1747 | #endif /* CONFIG_AUDIT */ |
| 1748 | |
| 1749 | #ifdef CONFIG_BPF_SYSCALL |
| 1750 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) |
| 1751 | { |
| 1752 | return call_int_hook(bpf, 0, cmd, attr, size); |
| 1753 | } |
| 1754 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) |
| 1755 | { |
| 1756 | return call_int_hook(bpf_map, 0, map, fmode); |
| 1757 | } |
| 1758 | int security_bpf_prog(struct bpf_prog *prog) |
| 1759 | { |
| 1760 | return call_int_hook(bpf_prog, 0, prog); |
| 1761 | } |
| 1762 | int security_bpf_map_alloc(struct bpf_map *map) |
| 1763 | { |
| 1764 | return call_int_hook(bpf_map_alloc_security, 0, map); |
| 1765 | } |
| 1766 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) |
| 1767 | { |
| 1768 | return call_int_hook(bpf_prog_alloc_security, 0, aux); |
| 1769 | } |
| 1770 | void security_bpf_map_free(struct bpf_map *map) |
| 1771 | { |
| 1772 | call_void_hook(bpf_map_free_security, map); |
| 1773 | } |
| 1774 | void security_bpf_prog_free(struct bpf_prog_aux *aux) |
| 1775 | { |
| 1776 | call_void_hook(bpf_prog_free_security, aux); |
| 1777 | } |
| 1778 | #endif /* CONFIG_BPF_SYSCALL */ |