1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * Due to this file being licensed under the GPL there is controversy over 16 * whether this permits you to write a module that #includes this file 17 * without placing your module under the GPL. Please consult a lawyer for 18 * advice before doing this. 19 * 20 */ 21 22 #ifndef __LINUX_SECURITY_H 23 #define __LINUX_SECURITY_H 24 25 #include <linux/key.h> 26 #include <linux/capability.h> 27 #include <linux/slab.h> 28 #include <linux/err.h> 29 #include <linux/string.h> 30 #include <linux/mm.h> 31 32 struct linux_binprm; 33 struct cred; 34 struct rlimit; 35 struct siginfo; 36 struct sem_array; 37 struct sembuf; 38 struct kern_ipc_perm; 39 struct audit_context; 40 struct super_block; 41 struct inode; 42 struct dentry; 43 struct file; 44 struct vfsmount; 45 struct path; 46 struct qstr; 47 struct iattr; 48 struct fown_struct; 49 struct file_operations; 50 struct shmid_kernel; 51 struct msg_msg; 52 struct msg_queue; 53 struct xattr; 54 struct xfrm_sec_ctx; 55 struct mm_struct; 56 57 /* If capable should audit the security request */ 58 #define SECURITY_CAP_NOAUDIT 0 59 #define SECURITY_CAP_AUDIT 1 60 61 /* LSM Agnostic defines for sb_set_mnt_opts */ 62 #define SECURITY_LSM_NATIVE_LABELS 1 63 64 struct ctl_table; 65 struct audit_krule; 66 struct user_namespace; 67 struct timezone; 68 69 /* These functions are in security/commoncap.c */ 70 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 71 int cap, int audit); 72 extern int cap_settime(const struct timespec *ts, const struct timezone *tz); 73 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 74 extern int cap_ptrace_traceme(struct task_struct *parent); 75 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 76 extern int cap_capset(struct cred *new, const struct cred *old, 77 const kernel_cap_t *effective, 78 const kernel_cap_t *inheritable, 79 const kernel_cap_t *permitted); 80 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 81 extern int cap_bprm_secureexec(struct linux_binprm *bprm); 82 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 83 const void *value, size_t size, int flags); 84 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 85 extern int cap_inode_need_killpriv(struct dentry *dentry); 86 extern int cap_inode_killpriv(struct dentry *dentry); 87 extern int cap_mmap_addr(unsigned long addr); 88 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 89 unsigned long prot, unsigned long flags); 90 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 91 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 92 unsigned long arg4, unsigned long arg5); 93 extern int cap_task_setscheduler(struct task_struct *p); 94 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 95 extern int cap_task_setnice(struct task_struct *p, int nice); 96 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 97 98 struct msghdr; 99 struct sk_buff; 100 struct sock; 101 struct sockaddr; 102 struct socket; 103 struct flowi; 104 struct dst_entry; 105 struct xfrm_selector; 106 struct xfrm_policy; 107 struct xfrm_state; 108 struct xfrm_user_sec_ctx; 109 struct seq_file; 110 111 #ifdef CONFIG_MMU 112 extern unsigned long mmap_min_addr; 113 extern unsigned long dac_mmap_min_addr; 114 #else 115 #define mmap_min_addr 0UL 116 #define dac_mmap_min_addr 0UL 117 #endif 118 119 /* 120 * Values used in the task_security_ops calls 121 */ 122 /* setuid or setgid, id0 == uid or gid */ 123 #define LSM_SETID_ID 1 124 125 /* setreuid or setregid, id0 == real, id1 == eff */ 126 #define LSM_SETID_RE 2 127 128 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 129 #define LSM_SETID_RES 4 130 131 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 132 #define LSM_SETID_FS 8 133 134 /* forward declares to avoid warnings */ 135 struct sched_param; 136 struct request_sock; 137 138 /* bprm->unsafe reasons */ 139 #define LSM_UNSAFE_SHARE 1 140 #define LSM_UNSAFE_PTRACE 2 141 #define LSM_UNSAFE_PTRACE_CAP 4 142 #define LSM_UNSAFE_NO_NEW_PRIVS 8 143 144 #ifdef CONFIG_MMU 145 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 146 void __user *buffer, size_t *lenp, loff_t *ppos); 147 #endif 148 149 /* security_inode_init_security callback function to write xattrs */ 150 typedef int (*initxattrs) (struct inode *inode, 151 const struct xattr *xattr_array, void *fs_data); 152 153 #ifdef CONFIG_SECURITY 154 155 struct security_mnt_opts { 156 char **mnt_opts; 157 int *mnt_opts_flags; 158 int num_mnt_opts; 159 }; 160 161 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 162 { 163 opts->mnt_opts = NULL; 164 opts->mnt_opts_flags = NULL; 165 opts->num_mnt_opts = 0; 166 } 167 168 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 169 { 170 int i; 171 if (opts->mnt_opts) 172 for (i = 0; i < opts->num_mnt_opts; i++) 173 kfree(opts->mnt_opts[i]); 174 kfree(opts->mnt_opts); 175 opts->mnt_opts = NULL; 176 kfree(opts->mnt_opts_flags); 177 opts->mnt_opts_flags = NULL; 178 opts->num_mnt_opts = 0; 179 } 180 181 /* prototypes */ 182 extern int security_init(void); 183 184 /* Security operations */ 185 int security_binder_set_context_mgr(struct task_struct *mgr); 186 int security_binder_transaction(struct task_struct *from, 187 struct task_struct *to); 188 int security_binder_transfer_binder(struct task_struct *from, 189 struct task_struct *to); 190 int security_binder_transfer_file(struct task_struct *from, 191 struct task_struct *to, struct file *file); 192 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 193 int security_ptrace_traceme(struct task_struct *parent); 194 int security_capget(struct task_struct *target, 195 kernel_cap_t *effective, 196 kernel_cap_t *inheritable, 197 kernel_cap_t *permitted); 198 int security_capset(struct cred *new, const struct cred *old, 199 const kernel_cap_t *effective, 200 const kernel_cap_t *inheritable, 201 const kernel_cap_t *permitted); 202 int security_capable(const struct cred *cred, struct user_namespace *ns, 203 int cap); 204 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 205 int cap); 206 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 207 int security_quota_on(struct dentry *dentry); 208 int security_syslog(int type); 209 int security_settime(const struct timespec *ts, const struct timezone *tz); 210 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 211 int security_bprm_set_creds(struct linux_binprm *bprm); 212 int security_bprm_check(struct linux_binprm *bprm); 213 void security_bprm_committing_creds(struct linux_binprm *bprm); 214 void security_bprm_committed_creds(struct linux_binprm *bprm); 215 int security_bprm_secureexec(struct linux_binprm *bprm); 216 int security_sb_alloc(struct super_block *sb); 217 void security_sb_free(struct super_block *sb); 218 int security_sb_copy_data(char *orig, char *copy); 219 int security_sb_remount(struct super_block *sb, void *data); 220 int security_sb_kern_mount(struct super_block *sb, int flags, void *data); 221 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 222 int security_sb_statfs(struct dentry *dentry); 223 int security_sb_mount(const char *dev_name, struct path *path, 224 const char *type, unsigned long flags, void *data); 225 int security_sb_umount(struct vfsmount *mnt, int flags); 226 int security_sb_pivotroot(struct path *old_path, struct path *new_path); 227 int security_sb_set_mnt_opts(struct super_block *sb, 228 struct security_mnt_opts *opts, 229 unsigned long kern_flags, 230 unsigned long *set_kern_flags); 231 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 232 struct super_block *newsb); 233 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); 234 int security_dentry_init_security(struct dentry *dentry, int mode, 235 struct qstr *name, void **ctx, 236 u32 *ctxlen); 237 238 int security_inode_alloc(struct inode *inode); 239 void security_inode_free(struct inode *inode); 240 int security_inode_init_security(struct inode *inode, struct inode *dir, 241 const struct qstr *qstr, 242 initxattrs initxattrs, void *fs_data); 243 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 244 const struct qstr *qstr, const char **name, 245 void **value, size_t *len); 246 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 247 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 248 struct dentry *new_dentry); 249 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 250 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 251 const char *old_name); 252 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 253 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 254 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 255 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 256 struct inode *new_dir, struct dentry *new_dentry, 257 unsigned int flags); 258 int security_inode_readlink(struct dentry *dentry); 259 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 260 bool rcu); 261 int security_inode_permission(struct inode *inode, int mask); 262 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 263 int security_inode_getattr(const struct path *path); 264 int security_inode_setxattr(struct dentry *dentry, const char *name, 265 const void *value, size_t size, int flags); 266 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 267 const void *value, size_t size, int flags); 268 int security_inode_getxattr(struct dentry *dentry, const char *name); 269 int security_inode_listxattr(struct dentry *dentry); 270 int security_inode_removexattr(struct dentry *dentry, const char *name); 271 int security_inode_need_killpriv(struct dentry *dentry); 272 int security_inode_killpriv(struct dentry *dentry); 273 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 274 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 275 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 276 void security_inode_getsecid(struct inode *inode, u32 *secid); 277 int security_file_permission(struct file *file, int mask); 278 int security_file_alloc(struct file *file); 279 void security_file_free(struct file *file); 280 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 281 int security_mmap_file(struct file *file, unsigned long prot, 282 unsigned long flags); 283 int security_mmap_addr(unsigned long addr); 284 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 285 unsigned long prot); 286 int security_file_lock(struct file *file, unsigned int cmd); 287 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 288 void security_file_set_fowner(struct file *file); 289 int security_file_send_sigiotask(struct task_struct *tsk, 290 struct fown_struct *fown, int sig); 291 int security_file_receive(struct file *file); 292 int security_file_open(struct file *file, const struct cred *cred); 293 int security_task_create(unsigned long clone_flags); 294 void security_task_free(struct task_struct *task); 295 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 296 void security_cred_free(struct cred *cred); 297 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 298 void security_transfer_creds(struct cred *new, const struct cred *old); 299 int security_kernel_act_as(struct cred *new, u32 secid); 300 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 301 int security_kernel_fw_from_file(struct file *file, char *buf, size_t size); 302 int security_kernel_module_request(char *kmod_name); 303 int security_kernel_module_from_file(struct file *file); 304 int security_task_fix_setuid(struct cred *new, const struct cred *old, 305 int flags); 306 int security_task_setpgid(struct task_struct *p, pid_t pgid); 307 int security_task_getpgid(struct task_struct *p); 308 int security_task_getsid(struct task_struct *p); 309 void security_task_getsecid(struct task_struct *p, u32 *secid); 310 int security_task_setnice(struct task_struct *p, int nice); 311 int security_task_setioprio(struct task_struct *p, int ioprio); 312 int security_task_getioprio(struct task_struct *p); 313 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 314 struct rlimit *new_rlim); 315 int security_task_setscheduler(struct task_struct *p); 316 int security_task_getscheduler(struct task_struct *p); 317 int security_task_movememory(struct task_struct *p); 318 int security_task_kill(struct task_struct *p, struct siginfo *info, 319 int sig, u32 secid); 320 int security_task_wait(struct task_struct *p); 321 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 322 unsigned long arg4, unsigned long arg5); 323 void security_task_to_inode(struct task_struct *p, struct inode *inode); 324 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 325 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 326 int security_msg_msg_alloc(struct msg_msg *msg); 327 void security_msg_msg_free(struct msg_msg *msg); 328 int security_msg_queue_alloc(struct msg_queue *msq); 329 void security_msg_queue_free(struct msg_queue *msq); 330 int security_msg_queue_associate(struct msg_queue *msq, int msqflg); 331 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd); 332 int security_msg_queue_msgsnd(struct msg_queue *msq, 333 struct msg_msg *msg, int msqflg); 334 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 335 struct task_struct *target, long type, int mode); 336 int security_shm_alloc(struct shmid_kernel *shp); 337 void security_shm_free(struct shmid_kernel *shp); 338 int security_shm_associate(struct shmid_kernel *shp, int shmflg); 339 int security_shm_shmctl(struct shmid_kernel *shp, int cmd); 340 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg); 341 int security_sem_alloc(struct sem_array *sma); 342 void security_sem_free(struct sem_array *sma); 343 int security_sem_associate(struct sem_array *sma, int semflg); 344 int security_sem_semctl(struct sem_array *sma, int cmd); 345 int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 346 unsigned nsops, int alter); 347 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 348 int security_getprocattr(struct task_struct *p, char *name, char **value); 349 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size); 350 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 351 int security_ismaclabel(const char *name); 352 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 353 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 354 void security_release_secctx(char *secdata, u32 seclen); 355 356 void security_inode_invalidate_secctx(struct inode *inode); 357 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 358 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 359 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 360 #else /* CONFIG_SECURITY */ 361 struct security_mnt_opts { 362 }; 363 364 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 365 { 366 } 367 368 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 369 { 370 } 371 372 /* 373 * This is the default capabilities functionality. Most of these functions 374 * are just stubbed out, but a few must call the proper capable code. 375 */ 376 377 static inline int security_init(void) 378 { 379 return 0; 380 } 381 382 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 383 { 384 return 0; 385 } 386 387 static inline int security_binder_transaction(struct task_struct *from, 388 struct task_struct *to) 389 { 390 return 0; 391 } 392 393 static inline int security_binder_transfer_binder(struct task_struct *from, 394 struct task_struct *to) 395 { 396 return 0; 397 } 398 399 static inline int security_binder_transfer_file(struct task_struct *from, 400 struct task_struct *to, 401 struct file *file) 402 { 403 return 0; 404 } 405 406 static inline int security_ptrace_access_check(struct task_struct *child, 407 unsigned int mode) 408 { 409 return cap_ptrace_access_check(child, mode); 410 } 411 412 static inline int security_ptrace_traceme(struct task_struct *parent) 413 { 414 return cap_ptrace_traceme(parent); 415 } 416 417 static inline int security_capget(struct task_struct *target, 418 kernel_cap_t *effective, 419 kernel_cap_t *inheritable, 420 kernel_cap_t *permitted) 421 { 422 return cap_capget(target, effective, inheritable, permitted); 423 } 424 425 static inline int security_capset(struct cred *new, 426 const struct cred *old, 427 const kernel_cap_t *effective, 428 const kernel_cap_t *inheritable, 429 const kernel_cap_t *permitted) 430 { 431 return cap_capset(new, old, effective, inheritable, permitted); 432 } 433 434 static inline int security_capable(const struct cred *cred, 435 struct user_namespace *ns, int cap) 436 { 437 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT); 438 } 439 440 static inline int security_capable_noaudit(const struct cred *cred, 441 struct user_namespace *ns, int cap) { 442 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 443 } 444 445 static inline int security_quotactl(int cmds, int type, int id, 446 struct super_block *sb) 447 { 448 return 0; 449 } 450 451 static inline int security_quota_on(struct dentry *dentry) 452 { 453 return 0; 454 } 455 456 static inline int security_syslog(int type) 457 { 458 return 0; 459 } 460 461 static inline int security_settime(const struct timespec *ts, 462 const struct timezone *tz) 463 { 464 return cap_settime(ts, tz); 465 } 466 467 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 468 { 469 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 470 } 471 472 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 473 { 474 return cap_bprm_set_creds(bprm); 475 } 476 477 static inline int security_bprm_check(struct linux_binprm *bprm) 478 { 479 return 0; 480 } 481 482 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 483 { 484 } 485 486 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 487 { 488 } 489 490 static inline int security_bprm_secureexec(struct linux_binprm *bprm) 491 { 492 return cap_bprm_secureexec(bprm); 493 } 494 495 static inline int security_sb_alloc(struct super_block *sb) 496 { 497 return 0; 498 } 499 500 static inline void security_sb_free(struct super_block *sb) 501 { } 502 503 static inline int security_sb_copy_data(char *orig, char *copy) 504 { 505 return 0; 506 } 507 508 static inline int security_sb_remount(struct super_block *sb, void *data) 509 { 510 return 0; 511 } 512 513 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 514 { 515 return 0; 516 } 517 518 static inline int security_sb_show_options(struct seq_file *m, 519 struct super_block *sb) 520 { 521 return 0; 522 } 523 524 static inline int security_sb_statfs(struct dentry *dentry) 525 { 526 return 0; 527 } 528 529 static inline int security_sb_mount(const char *dev_name, struct path *path, 530 const char *type, unsigned long flags, 531 void *data) 532 { 533 return 0; 534 } 535 536 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 537 { 538 return 0; 539 } 540 541 static inline int security_sb_pivotroot(struct path *old_path, 542 struct path *new_path) 543 { 544 return 0; 545 } 546 547 static inline int security_sb_set_mnt_opts(struct super_block *sb, 548 struct security_mnt_opts *opts, 549 unsigned long kern_flags, 550 unsigned long *set_kern_flags) 551 { 552 return 0; 553 } 554 555 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 556 struct super_block *newsb) 557 { 558 return 0; 559 } 560 561 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 562 { 563 return 0; 564 } 565 566 static inline int security_inode_alloc(struct inode *inode) 567 { 568 return 0; 569 } 570 571 static inline void security_inode_free(struct inode *inode) 572 { } 573 574 static inline int security_dentry_init_security(struct dentry *dentry, 575 int mode, 576 struct qstr *name, 577 void **ctx, 578 u32 *ctxlen) 579 { 580 return -EOPNOTSUPP; 581 } 582 583 584 static inline int security_inode_init_security(struct inode *inode, 585 struct inode *dir, 586 const struct qstr *qstr, 587 const initxattrs xattrs, 588 void *fs_data) 589 { 590 return 0; 591 } 592 593 static inline int security_old_inode_init_security(struct inode *inode, 594 struct inode *dir, 595 const struct qstr *qstr, 596 const char **name, 597 void **value, size_t *len) 598 { 599 return -EOPNOTSUPP; 600 } 601 602 static inline int security_inode_create(struct inode *dir, 603 struct dentry *dentry, 604 umode_t mode) 605 { 606 return 0; 607 } 608 609 static inline int security_inode_link(struct dentry *old_dentry, 610 struct inode *dir, 611 struct dentry *new_dentry) 612 { 613 return 0; 614 } 615 616 static inline int security_inode_unlink(struct inode *dir, 617 struct dentry *dentry) 618 { 619 return 0; 620 } 621 622 static inline int security_inode_symlink(struct inode *dir, 623 struct dentry *dentry, 624 const char *old_name) 625 { 626 return 0; 627 } 628 629 static inline int security_inode_mkdir(struct inode *dir, 630 struct dentry *dentry, 631 int mode) 632 { 633 return 0; 634 } 635 636 static inline int security_inode_rmdir(struct inode *dir, 637 struct dentry *dentry) 638 { 639 return 0; 640 } 641 642 static inline int security_inode_mknod(struct inode *dir, 643 struct dentry *dentry, 644 int mode, dev_t dev) 645 { 646 return 0; 647 } 648 649 static inline int security_inode_rename(struct inode *old_dir, 650 struct dentry *old_dentry, 651 struct inode *new_dir, 652 struct dentry *new_dentry, 653 unsigned int flags) 654 { 655 return 0; 656 } 657 658 static inline int security_inode_readlink(struct dentry *dentry) 659 { 660 return 0; 661 } 662 663 static inline int security_inode_follow_link(struct dentry *dentry, 664 struct inode *inode, 665 bool rcu) 666 { 667 return 0; 668 } 669 670 static inline int security_inode_permission(struct inode *inode, int mask) 671 { 672 return 0; 673 } 674 675 static inline int security_inode_setattr(struct dentry *dentry, 676 struct iattr *attr) 677 { 678 return 0; 679 } 680 681 static inline int security_inode_getattr(const struct path *path) 682 { 683 return 0; 684 } 685 686 static inline int security_inode_setxattr(struct dentry *dentry, 687 const char *name, const void *value, size_t size, int flags) 688 { 689 return cap_inode_setxattr(dentry, name, value, size, flags); 690 } 691 692 static inline void security_inode_post_setxattr(struct dentry *dentry, 693 const char *name, const void *value, size_t size, int flags) 694 { } 695 696 static inline int security_inode_getxattr(struct dentry *dentry, 697 const char *name) 698 { 699 return 0; 700 } 701 702 static inline int security_inode_listxattr(struct dentry *dentry) 703 { 704 return 0; 705 } 706 707 static inline int security_inode_removexattr(struct dentry *dentry, 708 const char *name) 709 { 710 return cap_inode_removexattr(dentry, name); 711 } 712 713 static inline int security_inode_need_killpriv(struct dentry *dentry) 714 { 715 return cap_inode_need_killpriv(dentry); 716 } 717 718 static inline int security_inode_killpriv(struct dentry *dentry) 719 { 720 return cap_inode_killpriv(dentry); 721 } 722 723 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 724 { 725 return -EOPNOTSUPP; 726 } 727 728 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 729 { 730 return -EOPNOTSUPP; 731 } 732 733 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 734 { 735 return 0; 736 } 737 738 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 739 { 740 *secid = 0; 741 } 742 743 static inline int security_file_permission(struct file *file, int mask) 744 { 745 return 0; 746 } 747 748 static inline int security_file_alloc(struct file *file) 749 { 750 return 0; 751 } 752 753 static inline void security_file_free(struct file *file) 754 { } 755 756 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 757 unsigned long arg) 758 { 759 return 0; 760 } 761 762 static inline int security_mmap_file(struct file *file, unsigned long prot, 763 unsigned long flags) 764 { 765 return 0; 766 } 767 768 static inline int security_mmap_addr(unsigned long addr) 769 { 770 return cap_mmap_addr(addr); 771 } 772 773 static inline int security_file_mprotect(struct vm_area_struct *vma, 774 unsigned long reqprot, 775 unsigned long prot) 776 { 777 return 0; 778 } 779 780 static inline int security_file_lock(struct file *file, unsigned int cmd) 781 { 782 return 0; 783 } 784 785 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 786 unsigned long arg) 787 { 788 return 0; 789 } 790 791 static inline void security_file_set_fowner(struct file *file) 792 { 793 return; 794 } 795 796 static inline int security_file_send_sigiotask(struct task_struct *tsk, 797 struct fown_struct *fown, 798 int sig) 799 { 800 return 0; 801 } 802 803 static inline int security_file_receive(struct file *file) 804 { 805 return 0; 806 } 807 808 static inline int security_file_open(struct file *file, 809 const struct cred *cred) 810 { 811 return 0; 812 } 813 814 static inline int security_task_create(unsigned long clone_flags) 815 { 816 return 0; 817 } 818 819 static inline void security_task_free(struct task_struct *task) 820 { } 821 822 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 823 { 824 return 0; 825 } 826 827 static inline void security_cred_free(struct cred *cred) 828 { } 829 830 static inline int security_prepare_creds(struct cred *new, 831 const struct cred *old, 832 gfp_t gfp) 833 { 834 return 0; 835 } 836 837 static inline void security_transfer_creds(struct cred *new, 838 const struct cred *old) 839 { 840 } 841 842 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 843 { 844 return 0; 845 } 846 847 static inline int security_kernel_create_files_as(struct cred *cred, 848 struct inode *inode) 849 { 850 return 0; 851 } 852 853 static inline int security_kernel_fw_from_file(struct file *file, 854 char *buf, size_t size) 855 { 856 return 0; 857 } 858 859 static inline int security_kernel_module_request(char *kmod_name) 860 { 861 return 0; 862 } 863 864 static inline int security_kernel_module_from_file(struct file *file) 865 { 866 return 0; 867 } 868 869 static inline int security_task_fix_setuid(struct cred *new, 870 const struct cred *old, 871 int flags) 872 { 873 return cap_task_fix_setuid(new, old, flags); 874 } 875 876 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 877 { 878 return 0; 879 } 880 881 static inline int security_task_getpgid(struct task_struct *p) 882 { 883 return 0; 884 } 885 886 static inline int security_task_getsid(struct task_struct *p) 887 { 888 return 0; 889 } 890 891 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 892 { 893 *secid = 0; 894 } 895 896 static inline int security_task_setnice(struct task_struct *p, int nice) 897 { 898 return cap_task_setnice(p, nice); 899 } 900 901 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 902 { 903 return cap_task_setioprio(p, ioprio); 904 } 905 906 static inline int security_task_getioprio(struct task_struct *p) 907 { 908 return 0; 909 } 910 911 static inline int security_task_setrlimit(struct task_struct *p, 912 unsigned int resource, 913 struct rlimit *new_rlim) 914 { 915 return 0; 916 } 917 918 static inline int security_task_setscheduler(struct task_struct *p) 919 { 920 return cap_task_setscheduler(p); 921 } 922 923 static inline int security_task_getscheduler(struct task_struct *p) 924 { 925 return 0; 926 } 927 928 static inline int security_task_movememory(struct task_struct *p) 929 { 930 return 0; 931 } 932 933 static inline int security_task_kill(struct task_struct *p, 934 struct siginfo *info, int sig, 935 u32 secid) 936 { 937 return 0; 938 } 939 940 static inline int security_task_wait(struct task_struct *p) 941 { 942 return 0; 943 } 944 945 static inline int security_task_prctl(int option, unsigned long arg2, 946 unsigned long arg3, 947 unsigned long arg4, 948 unsigned long arg5) 949 { 950 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 951 } 952 953 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 954 { } 955 956 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 957 short flag) 958 { 959 return 0; 960 } 961 962 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 963 { 964 *secid = 0; 965 } 966 967 static inline int security_msg_msg_alloc(struct msg_msg *msg) 968 { 969 return 0; 970 } 971 972 static inline void security_msg_msg_free(struct msg_msg *msg) 973 { } 974 975 static inline int security_msg_queue_alloc(struct msg_queue *msq) 976 { 977 return 0; 978 } 979 980 static inline void security_msg_queue_free(struct msg_queue *msq) 981 { } 982 983 static inline int security_msg_queue_associate(struct msg_queue *msq, 984 int msqflg) 985 { 986 return 0; 987 } 988 989 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 990 { 991 return 0; 992 } 993 994 static inline int security_msg_queue_msgsnd(struct msg_queue *msq, 995 struct msg_msg *msg, int msqflg) 996 { 997 return 0; 998 } 999 1000 static inline int security_msg_queue_msgrcv(struct msg_queue *msq, 1001 struct msg_msg *msg, 1002 struct task_struct *target, 1003 long type, int mode) 1004 { 1005 return 0; 1006 } 1007 1008 static inline int security_shm_alloc(struct shmid_kernel *shp) 1009 { 1010 return 0; 1011 } 1012 1013 static inline void security_shm_free(struct shmid_kernel *shp) 1014 { } 1015 1016 static inline int security_shm_associate(struct shmid_kernel *shp, 1017 int shmflg) 1018 { 1019 return 0; 1020 } 1021 1022 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 1023 { 1024 return 0; 1025 } 1026 1027 static inline int security_shm_shmat(struct shmid_kernel *shp, 1028 char __user *shmaddr, int shmflg) 1029 { 1030 return 0; 1031 } 1032 1033 static inline int security_sem_alloc(struct sem_array *sma) 1034 { 1035 return 0; 1036 } 1037 1038 static inline void security_sem_free(struct sem_array *sma) 1039 { } 1040 1041 static inline int security_sem_associate(struct sem_array *sma, int semflg) 1042 { 1043 return 0; 1044 } 1045 1046 static inline int security_sem_semctl(struct sem_array *sma, int cmd) 1047 { 1048 return 0; 1049 } 1050 1051 static inline int security_sem_semop(struct sem_array *sma, 1052 struct sembuf *sops, unsigned nsops, 1053 int alter) 1054 { 1055 return 0; 1056 } 1057 1058 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1059 { } 1060 1061 static inline int security_getprocattr(struct task_struct *p, char *name, char **value) 1062 { 1063 return -EINVAL; 1064 } 1065 1066 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 1067 { 1068 return -EINVAL; 1069 } 1070 1071 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1072 { 1073 return 0; 1074 } 1075 1076 static inline int security_ismaclabel(const char *name) 1077 { 1078 return 0; 1079 } 1080 1081 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1082 { 1083 return -EOPNOTSUPP; 1084 } 1085 1086 static inline int security_secctx_to_secid(const char *secdata, 1087 u32 seclen, 1088 u32 *secid) 1089 { 1090 return -EOPNOTSUPP; 1091 } 1092 1093 static inline void security_release_secctx(char *secdata, u32 seclen) 1094 { 1095 } 1096 1097 static inline void security_inode_invalidate_secctx(struct inode *inode) 1098 { 1099 } 1100 1101 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1102 { 1103 return -EOPNOTSUPP; 1104 } 1105 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1106 { 1107 return -EOPNOTSUPP; 1108 } 1109 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1110 { 1111 return -EOPNOTSUPP; 1112 } 1113 #endif /* CONFIG_SECURITY */ 1114 1115 #ifdef CONFIG_SECURITY_NETWORK 1116 1117 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1118 int security_unix_may_send(struct socket *sock, struct socket *other); 1119 int security_socket_create(int family, int type, int protocol, int kern); 1120 int security_socket_post_create(struct socket *sock, int family, 1121 int type, int protocol, int kern); 1122 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1123 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1124 int security_socket_listen(struct socket *sock, int backlog); 1125 int security_socket_accept(struct socket *sock, struct socket *newsock); 1126 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1127 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1128 int size, int flags); 1129 int security_socket_getsockname(struct socket *sock); 1130 int security_socket_getpeername(struct socket *sock); 1131 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1132 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1133 int security_socket_shutdown(struct socket *sock, int how); 1134 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1135 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1136 int __user *optlen, unsigned len); 1137 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1138 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1139 void security_sk_free(struct sock *sk); 1140 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1141 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1142 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1143 void security_sock_graft(struct sock*sk, struct socket *parent); 1144 int security_inet_conn_request(struct sock *sk, 1145 struct sk_buff *skb, struct request_sock *req); 1146 void security_inet_csk_clone(struct sock *newsk, 1147 const struct request_sock *req); 1148 void security_inet_conn_established(struct sock *sk, 1149 struct sk_buff *skb); 1150 int security_secmark_relabel_packet(u32 secid); 1151 void security_secmark_refcount_inc(void); 1152 void security_secmark_refcount_dec(void); 1153 int security_tun_dev_alloc_security(void **security); 1154 void security_tun_dev_free_security(void *security); 1155 int security_tun_dev_create(void); 1156 int security_tun_dev_attach_queue(void *security); 1157 int security_tun_dev_attach(struct sock *sk, void *security); 1158 int security_tun_dev_open(void *security); 1159 1160 #else /* CONFIG_SECURITY_NETWORK */ 1161 static inline int security_unix_stream_connect(struct sock *sock, 1162 struct sock *other, 1163 struct sock *newsk) 1164 { 1165 return 0; 1166 } 1167 1168 static inline int security_unix_may_send(struct socket *sock, 1169 struct socket *other) 1170 { 1171 return 0; 1172 } 1173 1174 static inline int security_socket_create(int family, int type, 1175 int protocol, int kern) 1176 { 1177 return 0; 1178 } 1179 1180 static inline int security_socket_post_create(struct socket *sock, 1181 int family, 1182 int type, 1183 int protocol, int kern) 1184 { 1185 return 0; 1186 } 1187 1188 static inline int security_socket_bind(struct socket *sock, 1189 struct sockaddr *address, 1190 int addrlen) 1191 { 1192 return 0; 1193 } 1194 1195 static inline int security_socket_connect(struct socket *sock, 1196 struct sockaddr *address, 1197 int addrlen) 1198 { 1199 return 0; 1200 } 1201 1202 static inline int security_socket_listen(struct socket *sock, int backlog) 1203 { 1204 return 0; 1205 } 1206 1207 static inline int security_socket_accept(struct socket *sock, 1208 struct socket *newsock) 1209 { 1210 return 0; 1211 } 1212 1213 static inline int security_socket_sendmsg(struct socket *sock, 1214 struct msghdr *msg, int size) 1215 { 1216 return 0; 1217 } 1218 1219 static inline int security_socket_recvmsg(struct socket *sock, 1220 struct msghdr *msg, int size, 1221 int flags) 1222 { 1223 return 0; 1224 } 1225 1226 static inline int security_socket_getsockname(struct socket *sock) 1227 { 1228 return 0; 1229 } 1230 1231 static inline int security_socket_getpeername(struct socket *sock) 1232 { 1233 return 0; 1234 } 1235 1236 static inline int security_socket_getsockopt(struct socket *sock, 1237 int level, int optname) 1238 { 1239 return 0; 1240 } 1241 1242 static inline int security_socket_setsockopt(struct socket *sock, 1243 int level, int optname) 1244 { 1245 return 0; 1246 } 1247 1248 static inline int security_socket_shutdown(struct socket *sock, int how) 1249 { 1250 return 0; 1251 } 1252 static inline int security_sock_rcv_skb(struct sock *sk, 1253 struct sk_buff *skb) 1254 { 1255 return 0; 1256 } 1257 1258 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1259 int __user *optlen, unsigned len) 1260 { 1261 return -ENOPROTOOPT; 1262 } 1263 1264 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1265 { 1266 return -ENOPROTOOPT; 1267 } 1268 1269 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1270 { 1271 return 0; 1272 } 1273 1274 static inline void security_sk_free(struct sock *sk) 1275 { 1276 } 1277 1278 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1279 { 1280 } 1281 1282 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1283 { 1284 } 1285 1286 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1287 { 1288 } 1289 1290 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1291 { 1292 } 1293 1294 static inline int security_inet_conn_request(struct sock *sk, 1295 struct sk_buff *skb, struct request_sock *req) 1296 { 1297 return 0; 1298 } 1299 1300 static inline void security_inet_csk_clone(struct sock *newsk, 1301 const struct request_sock *req) 1302 { 1303 } 1304 1305 static inline void security_inet_conn_established(struct sock *sk, 1306 struct sk_buff *skb) 1307 { 1308 } 1309 1310 static inline int security_secmark_relabel_packet(u32 secid) 1311 { 1312 return 0; 1313 } 1314 1315 static inline void security_secmark_refcount_inc(void) 1316 { 1317 } 1318 1319 static inline void security_secmark_refcount_dec(void) 1320 { 1321 } 1322 1323 static inline int security_tun_dev_alloc_security(void **security) 1324 { 1325 return 0; 1326 } 1327 1328 static inline void security_tun_dev_free_security(void *security) 1329 { 1330 } 1331 1332 static inline int security_tun_dev_create(void) 1333 { 1334 return 0; 1335 } 1336 1337 static inline int security_tun_dev_attach_queue(void *security) 1338 { 1339 return 0; 1340 } 1341 1342 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1343 { 1344 return 0; 1345 } 1346 1347 static inline int security_tun_dev_open(void *security) 1348 { 1349 return 0; 1350 } 1351 #endif /* CONFIG_SECURITY_NETWORK */ 1352 1353 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1354 1355 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1356 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1357 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1358 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1359 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1360 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1361 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1362 struct xfrm_sec_ctx *polsec, u32 secid); 1363 int security_xfrm_state_delete(struct xfrm_state *x); 1364 void security_xfrm_state_free(struct xfrm_state *x); 1365 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1366 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1367 struct xfrm_policy *xp, 1368 const struct flowi *fl); 1369 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1370 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1371 1372 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1373 1374 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1375 struct xfrm_user_sec_ctx *sec_ctx, 1376 gfp_t gfp) 1377 { 1378 return 0; 1379 } 1380 1381 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1382 { 1383 return 0; 1384 } 1385 1386 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1387 { 1388 } 1389 1390 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1391 { 1392 return 0; 1393 } 1394 1395 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1396 struct xfrm_user_sec_ctx *sec_ctx) 1397 { 1398 return 0; 1399 } 1400 1401 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1402 struct xfrm_sec_ctx *polsec, u32 secid) 1403 { 1404 return 0; 1405 } 1406 1407 static inline void security_xfrm_state_free(struct xfrm_state *x) 1408 { 1409 } 1410 1411 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1412 { 1413 return 0; 1414 } 1415 1416 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1417 { 1418 return 0; 1419 } 1420 1421 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1422 struct xfrm_policy *xp, const struct flowi *fl) 1423 { 1424 return 1; 1425 } 1426 1427 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1428 { 1429 return 0; 1430 } 1431 1432 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1433 { 1434 } 1435 1436 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1437 1438 #ifdef CONFIG_SECURITY_PATH 1439 int security_path_unlink(struct path *dir, struct dentry *dentry); 1440 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode); 1441 int security_path_rmdir(struct path *dir, struct dentry *dentry); 1442 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, 1443 unsigned int dev); 1444 int security_path_truncate(struct path *path); 1445 int security_path_symlink(struct path *dir, struct dentry *dentry, 1446 const char *old_name); 1447 int security_path_link(struct dentry *old_dentry, struct path *new_dir, 1448 struct dentry *new_dentry); 1449 int security_path_rename(struct path *old_dir, struct dentry *old_dentry, 1450 struct path *new_dir, struct dentry *new_dentry, 1451 unsigned int flags); 1452 int security_path_chmod(struct path *path, umode_t mode); 1453 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid); 1454 int security_path_chroot(struct path *path); 1455 #else /* CONFIG_SECURITY_PATH */ 1456 static inline int security_path_unlink(struct path *dir, struct dentry *dentry) 1457 { 1458 return 0; 1459 } 1460 1461 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry, 1462 umode_t mode) 1463 { 1464 return 0; 1465 } 1466 1467 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry) 1468 { 1469 return 0; 1470 } 1471 1472 static inline int security_path_mknod(struct path *dir, struct dentry *dentry, 1473 umode_t mode, unsigned int dev) 1474 { 1475 return 0; 1476 } 1477 1478 static inline int security_path_truncate(struct path *path) 1479 { 1480 return 0; 1481 } 1482 1483 static inline int security_path_symlink(struct path *dir, struct dentry *dentry, 1484 const char *old_name) 1485 { 1486 return 0; 1487 } 1488 1489 static inline int security_path_link(struct dentry *old_dentry, 1490 struct path *new_dir, 1491 struct dentry *new_dentry) 1492 { 1493 return 0; 1494 } 1495 1496 static inline int security_path_rename(struct path *old_dir, 1497 struct dentry *old_dentry, 1498 struct path *new_dir, 1499 struct dentry *new_dentry, 1500 unsigned int flags) 1501 { 1502 return 0; 1503 } 1504 1505 static inline int security_path_chmod(struct path *path, umode_t mode) 1506 { 1507 return 0; 1508 } 1509 1510 static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid) 1511 { 1512 return 0; 1513 } 1514 1515 static inline int security_path_chroot(struct path *path) 1516 { 1517 return 0; 1518 } 1519 #endif /* CONFIG_SECURITY_PATH */ 1520 1521 #ifdef CONFIG_KEYS 1522 #ifdef CONFIG_SECURITY 1523 1524 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1525 void security_key_free(struct key *key); 1526 int security_key_permission(key_ref_t key_ref, 1527 const struct cred *cred, unsigned perm); 1528 int security_key_getsecurity(struct key *key, char **_buffer); 1529 1530 #else 1531 1532 static inline int security_key_alloc(struct key *key, 1533 const struct cred *cred, 1534 unsigned long flags) 1535 { 1536 return 0; 1537 } 1538 1539 static inline void security_key_free(struct key *key) 1540 { 1541 } 1542 1543 static inline int security_key_permission(key_ref_t key_ref, 1544 const struct cred *cred, 1545 unsigned perm) 1546 { 1547 return 0; 1548 } 1549 1550 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1551 { 1552 *_buffer = NULL; 1553 return 0; 1554 } 1555 1556 #endif 1557 #endif /* CONFIG_KEYS */ 1558 1559 #ifdef CONFIG_AUDIT 1560 #ifdef CONFIG_SECURITY 1561 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1562 int security_audit_rule_known(struct audit_krule *krule); 1563 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1564 struct audit_context *actx); 1565 void security_audit_rule_free(void *lsmrule); 1566 1567 #else 1568 1569 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1570 void **lsmrule) 1571 { 1572 return 0; 1573 } 1574 1575 static inline int security_audit_rule_known(struct audit_krule *krule) 1576 { 1577 return 0; 1578 } 1579 1580 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1581 void *lsmrule, struct audit_context *actx) 1582 { 1583 return 0; 1584 } 1585 1586 static inline void security_audit_rule_free(void *lsmrule) 1587 { } 1588 1589 #endif /* CONFIG_SECURITY */ 1590 #endif /* CONFIG_AUDIT */ 1591 1592 #ifdef CONFIG_SECURITYFS 1593 1594 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1595 struct dentry *parent, void *data, 1596 const struct file_operations *fops); 1597 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1598 extern void securityfs_remove(struct dentry *dentry); 1599 1600 #else /* CONFIG_SECURITYFS */ 1601 1602 static inline struct dentry *securityfs_create_dir(const char *name, 1603 struct dentry *parent) 1604 { 1605 return ERR_PTR(-ENODEV); 1606 } 1607 1608 static inline struct dentry *securityfs_create_file(const char *name, 1609 umode_t mode, 1610 struct dentry *parent, 1611 void *data, 1612 const struct file_operations *fops) 1613 { 1614 return ERR_PTR(-ENODEV); 1615 } 1616 1617 static inline void securityfs_remove(struct dentry *dentry) 1618 {} 1619 1620 #endif 1621 1622 #ifdef CONFIG_SECURITY 1623 1624 static inline char *alloc_secdata(void) 1625 { 1626 return (char *)get_zeroed_page(GFP_KERNEL); 1627 } 1628 1629 static inline void free_secdata(void *secdata) 1630 { 1631 free_page((unsigned long)secdata); 1632 } 1633 1634 #else 1635 1636 static inline char *alloc_secdata(void) 1637 { 1638 return (char *)1; 1639 } 1640 1641 static inline void free_secdata(void *secdata) 1642 { } 1643 #endif /* CONFIG_SECURITY */ 1644 1645 #endif /* ! __LINUX_SECURITY_H */ 1646 1647