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/fs.h> 28 #include <linux/slab.h> 29 #include <linux/err.h> 30 #include <linux/string.h> 31 #include <linux/mm.h> 32 #include <linux/fs.h> 33 34 struct linux_binprm; 35 struct cred; 36 struct rlimit; 37 struct siginfo; 38 struct sem_array; 39 struct sembuf; 40 struct kern_ipc_perm; 41 struct audit_context; 42 struct super_block; 43 struct inode; 44 struct dentry; 45 struct file; 46 struct vfsmount; 47 struct path; 48 struct qstr; 49 struct iattr; 50 struct fown_struct; 51 struct file_operations; 52 struct shmid_kernel; 53 struct msg_msg; 54 struct msg_queue; 55 struct xattr; 56 struct xfrm_sec_ctx; 57 struct mm_struct; 58 59 /* If capable should audit the security request */ 60 #define SECURITY_CAP_NOAUDIT 0 61 #define SECURITY_CAP_AUDIT 1 62 63 /* LSM Agnostic defines for sb_set_mnt_opts */ 64 #define SECURITY_LSM_NATIVE_LABELS 1 65 66 struct ctl_table; 67 struct audit_krule; 68 struct user_namespace; 69 struct timezone; 70 71 /* These functions are in security/commoncap.c */ 72 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 73 int cap, int audit); 74 extern int cap_settime(const struct timespec *ts, const struct timezone *tz); 75 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 76 extern int cap_ptrace_traceme(struct task_struct *parent); 77 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 78 extern int cap_capset(struct cred *new, const struct cred *old, 79 const kernel_cap_t *effective, 80 const kernel_cap_t *inheritable, 81 const kernel_cap_t *permitted); 82 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 83 extern int cap_bprm_secureexec(struct linux_binprm *bprm); 84 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 85 const void *value, size_t size, int flags); 86 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 87 extern int cap_inode_need_killpriv(struct dentry *dentry); 88 extern int cap_inode_killpriv(struct dentry *dentry); 89 extern int cap_mmap_addr(unsigned long addr); 90 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 91 unsigned long prot, unsigned long flags); 92 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 93 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 94 unsigned long arg4, unsigned long arg5); 95 extern int cap_task_setscheduler(struct task_struct *p); 96 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 97 extern int cap_task_setnice(struct task_struct *p, int nice); 98 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 99 100 struct msghdr; 101 struct sk_buff; 102 struct sock; 103 struct sockaddr; 104 struct socket; 105 struct flowi; 106 struct dst_entry; 107 struct xfrm_selector; 108 struct xfrm_policy; 109 struct xfrm_state; 110 struct xfrm_user_sec_ctx; 111 struct seq_file; 112 113 #ifdef CONFIG_MMU 114 extern unsigned long mmap_min_addr; 115 extern unsigned long dac_mmap_min_addr; 116 #else 117 #define mmap_min_addr 0UL 118 #define dac_mmap_min_addr 0UL 119 #endif 120 121 /* 122 * Values used in the task_security_ops calls 123 */ 124 /* setuid or setgid, id0 == uid or gid */ 125 #define LSM_SETID_ID 1 126 127 /* setreuid or setregid, id0 == real, id1 == eff */ 128 #define LSM_SETID_RE 2 129 130 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 131 #define LSM_SETID_RES 4 132 133 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 134 #define LSM_SETID_FS 8 135 136 /* forward declares to avoid warnings */ 137 struct sched_param; 138 struct request_sock; 139 140 /* bprm->unsafe reasons */ 141 #define LSM_UNSAFE_SHARE 1 142 #define LSM_UNSAFE_PTRACE 2 143 #define LSM_UNSAFE_PTRACE_CAP 4 144 #define LSM_UNSAFE_NO_NEW_PRIVS 8 145 146 #ifdef CONFIG_MMU 147 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 148 void __user *buffer, size_t *lenp, loff_t *ppos); 149 #endif 150 151 /* security_inode_init_security callback function to write xattrs */ 152 typedef int (*initxattrs) (struct inode *inode, 153 const struct xattr *xattr_array, void *fs_data); 154 155 #ifdef CONFIG_SECURITY 156 157 struct security_mnt_opts { 158 char **mnt_opts; 159 int *mnt_opts_flags; 160 int num_mnt_opts; 161 }; 162 163 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 164 { 165 opts->mnt_opts = NULL; 166 opts->mnt_opts_flags = NULL; 167 opts->num_mnt_opts = 0; 168 } 169 170 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 171 { 172 int i; 173 if (opts->mnt_opts) 174 for (i = 0; i < opts->num_mnt_opts; i++) 175 kfree(opts->mnt_opts[i]); 176 kfree(opts->mnt_opts); 177 opts->mnt_opts = NULL; 178 kfree(opts->mnt_opts_flags); 179 opts->mnt_opts_flags = NULL; 180 opts->num_mnt_opts = 0; 181 } 182 183 /* prototypes */ 184 extern int security_init(void); 185 186 /* Security operations */ 187 int security_binder_set_context_mgr(struct task_struct *mgr); 188 int security_binder_transaction(struct task_struct *from, 189 struct task_struct *to); 190 int security_binder_transfer_binder(struct task_struct *from, 191 struct task_struct *to); 192 int security_binder_transfer_file(struct task_struct *from, 193 struct task_struct *to, struct file *file); 194 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 195 int security_ptrace_traceme(struct task_struct *parent); 196 int security_capget(struct task_struct *target, 197 kernel_cap_t *effective, 198 kernel_cap_t *inheritable, 199 kernel_cap_t *permitted); 200 int security_capset(struct cred *new, const struct cred *old, 201 const kernel_cap_t *effective, 202 const kernel_cap_t *inheritable, 203 const kernel_cap_t *permitted); 204 int security_capable(const struct cred *cred, struct user_namespace *ns, 205 int cap); 206 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 207 int cap); 208 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 209 int security_quota_on(struct dentry *dentry); 210 int security_syslog(int type); 211 int security_settime(const struct timespec *ts, const struct timezone *tz); 212 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 213 int security_bprm_set_creds(struct linux_binprm *bprm); 214 int security_bprm_check(struct linux_binprm *bprm); 215 void security_bprm_committing_creds(struct linux_binprm *bprm); 216 void security_bprm_committed_creds(struct linux_binprm *bprm); 217 int security_bprm_secureexec(struct linux_binprm *bprm); 218 int security_sb_alloc(struct super_block *sb); 219 void security_sb_free(struct super_block *sb); 220 int security_sb_copy_data(char *orig, char *copy); 221 int security_sb_remount(struct super_block *sb, void *data); 222 int security_sb_kern_mount(struct super_block *sb, int flags, void *data); 223 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 224 int security_sb_statfs(struct dentry *dentry); 225 int security_sb_mount(const char *dev_name, struct path *path, 226 const char *type, unsigned long flags, void *data); 227 int security_sb_umount(struct vfsmount *mnt, int flags); 228 int security_sb_pivotroot(struct path *old_path, struct path *new_path); 229 int security_sb_set_mnt_opts(struct super_block *sb, 230 struct security_mnt_opts *opts, 231 unsigned long kern_flags, 232 unsigned long *set_kern_flags); 233 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 234 struct super_block *newsb); 235 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); 236 int security_dentry_init_security(struct dentry *dentry, int mode, 237 struct qstr *name, void **ctx, 238 u32 *ctxlen); 239 240 int security_inode_alloc(struct inode *inode); 241 void security_inode_free(struct inode *inode); 242 int security_inode_init_security(struct inode *inode, struct inode *dir, 243 const struct qstr *qstr, 244 initxattrs initxattrs, void *fs_data); 245 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 246 const struct qstr *qstr, const char **name, 247 void **value, size_t *len); 248 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 249 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 250 struct dentry *new_dentry); 251 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 252 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 253 const char *old_name); 254 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 255 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 256 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 257 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 258 struct inode *new_dir, struct dentry *new_dentry, 259 unsigned int flags); 260 int security_inode_readlink(struct dentry *dentry); 261 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 262 bool rcu); 263 int security_inode_permission(struct inode *inode, int mask); 264 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 265 int security_inode_getattr(const struct path *path); 266 int security_inode_setxattr(struct dentry *dentry, const char *name, 267 const void *value, size_t size, int flags); 268 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 269 const void *value, size_t size, int flags); 270 int security_inode_getxattr(struct dentry *dentry, const char *name); 271 int security_inode_listxattr(struct dentry *dentry); 272 int security_inode_removexattr(struct dentry *dentry, const char *name); 273 int security_inode_need_killpriv(struct dentry *dentry); 274 int security_inode_killpriv(struct dentry *dentry); 275 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 276 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 277 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 278 void security_inode_getsecid(struct inode *inode, u32 *secid); 279 int security_file_permission(struct file *file, int mask); 280 int security_file_alloc(struct file *file); 281 void security_file_free(struct file *file); 282 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 283 int security_mmap_file(struct file *file, unsigned long prot, 284 unsigned long flags); 285 int security_mmap_addr(unsigned long addr); 286 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 287 unsigned long prot); 288 int security_file_lock(struct file *file, unsigned int cmd); 289 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 290 void security_file_set_fowner(struct file *file); 291 int security_file_send_sigiotask(struct task_struct *tsk, 292 struct fown_struct *fown, int sig); 293 int security_file_receive(struct file *file); 294 int security_file_open(struct file *file, const struct cred *cred); 295 int security_task_create(unsigned long clone_flags); 296 void security_task_free(struct task_struct *task); 297 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 298 void security_cred_free(struct cred *cred); 299 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 300 void security_transfer_creds(struct cred *new, const struct cred *old); 301 int security_kernel_act_as(struct cred *new, u32 secid); 302 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 303 int security_kernel_module_request(char *kmod_name); 304 int security_kernel_module_from_file(struct file *file); 305 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 306 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 307 enum kernel_read_file_id id); 308 int security_task_fix_setuid(struct cred *new, const struct cred *old, 309 int flags); 310 int security_task_setpgid(struct task_struct *p, pid_t pgid); 311 int security_task_getpgid(struct task_struct *p); 312 int security_task_getsid(struct task_struct *p); 313 void security_task_getsecid(struct task_struct *p, u32 *secid); 314 int security_task_setnice(struct task_struct *p, int nice); 315 int security_task_setioprio(struct task_struct *p, int ioprio); 316 int security_task_getioprio(struct task_struct *p); 317 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 318 struct rlimit *new_rlim); 319 int security_task_setscheduler(struct task_struct *p); 320 int security_task_getscheduler(struct task_struct *p); 321 int security_task_movememory(struct task_struct *p); 322 int security_task_kill(struct task_struct *p, struct siginfo *info, 323 int sig, u32 secid); 324 int security_task_wait(struct task_struct *p); 325 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 326 unsigned long arg4, unsigned long arg5); 327 void security_task_to_inode(struct task_struct *p, struct inode *inode); 328 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 329 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 330 int security_msg_msg_alloc(struct msg_msg *msg); 331 void security_msg_msg_free(struct msg_msg *msg); 332 int security_msg_queue_alloc(struct msg_queue *msq); 333 void security_msg_queue_free(struct msg_queue *msq); 334 int security_msg_queue_associate(struct msg_queue *msq, int msqflg); 335 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd); 336 int security_msg_queue_msgsnd(struct msg_queue *msq, 337 struct msg_msg *msg, int msqflg); 338 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 339 struct task_struct *target, long type, int mode); 340 int security_shm_alloc(struct shmid_kernel *shp); 341 void security_shm_free(struct shmid_kernel *shp); 342 int security_shm_associate(struct shmid_kernel *shp, int shmflg); 343 int security_shm_shmctl(struct shmid_kernel *shp, int cmd); 344 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg); 345 int security_sem_alloc(struct sem_array *sma); 346 void security_sem_free(struct sem_array *sma); 347 int security_sem_associate(struct sem_array *sma, int semflg); 348 int security_sem_semctl(struct sem_array *sma, int cmd); 349 int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 350 unsigned nsops, int alter); 351 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 352 int security_getprocattr(struct task_struct *p, char *name, char **value); 353 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size); 354 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 355 int security_ismaclabel(const char *name); 356 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 357 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 358 void security_release_secctx(char *secdata, u32 seclen); 359 360 void security_inode_invalidate_secctx(struct inode *inode); 361 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 362 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 363 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 364 #else /* CONFIG_SECURITY */ 365 struct security_mnt_opts { 366 }; 367 368 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 369 { 370 } 371 372 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 373 { 374 } 375 376 /* 377 * This is the default capabilities functionality. Most of these functions 378 * are just stubbed out, but a few must call the proper capable code. 379 */ 380 381 static inline int security_init(void) 382 { 383 return 0; 384 } 385 386 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 387 { 388 return 0; 389 } 390 391 static inline int security_binder_transaction(struct task_struct *from, 392 struct task_struct *to) 393 { 394 return 0; 395 } 396 397 static inline int security_binder_transfer_binder(struct task_struct *from, 398 struct task_struct *to) 399 { 400 return 0; 401 } 402 403 static inline int security_binder_transfer_file(struct task_struct *from, 404 struct task_struct *to, 405 struct file *file) 406 { 407 return 0; 408 } 409 410 static inline int security_ptrace_access_check(struct task_struct *child, 411 unsigned int mode) 412 { 413 return cap_ptrace_access_check(child, mode); 414 } 415 416 static inline int security_ptrace_traceme(struct task_struct *parent) 417 { 418 return cap_ptrace_traceme(parent); 419 } 420 421 static inline int security_capget(struct task_struct *target, 422 kernel_cap_t *effective, 423 kernel_cap_t *inheritable, 424 kernel_cap_t *permitted) 425 { 426 return cap_capget(target, effective, inheritable, permitted); 427 } 428 429 static inline int security_capset(struct cred *new, 430 const struct cred *old, 431 const kernel_cap_t *effective, 432 const kernel_cap_t *inheritable, 433 const kernel_cap_t *permitted) 434 { 435 return cap_capset(new, old, effective, inheritable, permitted); 436 } 437 438 static inline int security_capable(const struct cred *cred, 439 struct user_namespace *ns, int cap) 440 { 441 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT); 442 } 443 444 static inline int security_capable_noaudit(const struct cred *cred, 445 struct user_namespace *ns, int cap) { 446 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 447 } 448 449 static inline int security_quotactl(int cmds, int type, int id, 450 struct super_block *sb) 451 { 452 return 0; 453 } 454 455 static inline int security_quota_on(struct dentry *dentry) 456 { 457 return 0; 458 } 459 460 static inline int security_syslog(int type) 461 { 462 return 0; 463 } 464 465 static inline int security_settime(const struct timespec *ts, 466 const struct timezone *tz) 467 { 468 return cap_settime(ts, tz); 469 } 470 471 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 472 { 473 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 474 } 475 476 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 477 { 478 return cap_bprm_set_creds(bprm); 479 } 480 481 static inline int security_bprm_check(struct linux_binprm *bprm) 482 { 483 return 0; 484 } 485 486 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 487 { 488 } 489 490 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 491 { 492 } 493 494 static inline int security_bprm_secureexec(struct linux_binprm *bprm) 495 { 496 return cap_bprm_secureexec(bprm); 497 } 498 499 static inline int security_sb_alloc(struct super_block *sb) 500 { 501 return 0; 502 } 503 504 static inline void security_sb_free(struct super_block *sb) 505 { } 506 507 static inline int security_sb_copy_data(char *orig, char *copy) 508 { 509 return 0; 510 } 511 512 static inline int security_sb_remount(struct super_block *sb, void *data) 513 { 514 return 0; 515 } 516 517 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 518 { 519 return 0; 520 } 521 522 static inline int security_sb_show_options(struct seq_file *m, 523 struct super_block *sb) 524 { 525 return 0; 526 } 527 528 static inline int security_sb_statfs(struct dentry *dentry) 529 { 530 return 0; 531 } 532 533 static inline int security_sb_mount(const char *dev_name, struct path *path, 534 const char *type, unsigned long flags, 535 void *data) 536 { 537 return 0; 538 } 539 540 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 541 { 542 return 0; 543 } 544 545 static inline int security_sb_pivotroot(struct path *old_path, 546 struct path *new_path) 547 { 548 return 0; 549 } 550 551 static inline int security_sb_set_mnt_opts(struct super_block *sb, 552 struct security_mnt_opts *opts, 553 unsigned long kern_flags, 554 unsigned long *set_kern_flags) 555 { 556 return 0; 557 } 558 559 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 560 struct super_block *newsb) 561 { 562 return 0; 563 } 564 565 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 566 { 567 return 0; 568 } 569 570 static inline int security_inode_alloc(struct inode *inode) 571 { 572 return 0; 573 } 574 575 static inline void security_inode_free(struct inode *inode) 576 { } 577 578 static inline int security_dentry_init_security(struct dentry *dentry, 579 int mode, 580 struct qstr *name, 581 void **ctx, 582 u32 *ctxlen) 583 { 584 return -EOPNOTSUPP; 585 } 586 587 588 static inline int security_inode_init_security(struct inode *inode, 589 struct inode *dir, 590 const struct qstr *qstr, 591 const initxattrs xattrs, 592 void *fs_data) 593 { 594 return 0; 595 } 596 597 static inline int security_old_inode_init_security(struct inode *inode, 598 struct inode *dir, 599 const struct qstr *qstr, 600 const char **name, 601 void **value, size_t *len) 602 { 603 return -EOPNOTSUPP; 604 } 605 606 static inline int security_inode_create(struct inode *dir, 607 struct dentry *dentry, 608 umode_t mode) 609 { 610 return 0; 611 } 612 613 static inline int security_inode_link(struct dentry *old_dentry, 614 struct inode *dir, 615 struct dentry *new_dentry) 616 { 617 return 0; 618 } 619 620 static inline int security_inode_unlink(struct inode *dir, 621 struct dentry *dentry) 622 { 623 return 0; 624 } 625 626 static inline int security_inode_symlink(struct inode *dir, 627 struct dentry *dentry, 628 const char *old_name) 629 { 630 return 0; 631 } 632 633 static inline int security_inode_mkdir(struct inode *dir, 634 struct dentry *dentry, 635 int mode) 636 { 637 return 0; 638 } 639 640 static inline int security_inode_rmdir(struct inode *dir, 641 struct dentry *dentry) 642 { 643 return 0; 644 } 645 646 static inline int security_inode_mknod(struct inode *dir, 647 struct dentry *dentry, 648 int mode, dev_t dev) 649 { 650 return 0; 651 } 652 653 static inline int security_inode_rename(struct inode *old_dir, 654 struct dentry *old_dentry, 655 struct inode *new_dir, 656 struct dentry *new_dentry, 657 unsigned int flags) 658 { 659 return 0; 660 } 661 662 static inline int security_inode_readlink(struct dentry *dentry) 663 { 664 return 0; 665 } 666 667 static inline int security_inode_follow_link(struct dentry *dentry, 668 struct inode *inode, 669 bool rcu) 670 { 671 return 0; 672 } 673 674 static inline int security_inode_permission(struct inode *inode, int mask) 675 { 676 return 0; 677 } 678 679 static inline int security_inode_setattr(struct dentry *dentry, 680 struct iattr *attr) 681 { 682 return 0; 683 } 684 685 static inline int security_inode_getattr(const struct path *path) 686 { 687 return 0; 688 } 689 690 static inline int security_inode_setxattr(struct dentry *dentry, 691 const char *name, const void *value, size_t size, int flags) 692 { 693 return cap_inode_setxattr(dentry, name, value, size, flags); 694 } 695 696 static inline void security_inode_post_setxattr(struct dentry *dentry, 697 const char *name, const void *value, size_t size, int flags) 698 { } 699 700 static inline int security_inode_getxattr(struct dentry *dentry, 701 const char *name) 702 { 703 return 0; 704 } 705 706 static inline int security_inode_listxattr(struct dentry *dentry) 707 { 708 return 0; 709 } 710 711 static inline int security_inode_removexattr(struct dentry *dentry, 712 const char *name) 713 { 714 return cap_inode_removexattr(dentry, name); 715 } 716 717 static inline int security_inode_need_killpriv(struct dentry *dentry) 718 { 719 return cap_inode_need_killpriv(dentry); 720 } 721 722 static inline int security_inode_killpriv(struct dentry *dentry) 723 { 724 return cap_inode_killpriv(dentry); 725 } 726 727 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 728 { 729 return -EOPNOTSUPP; 730 } 731 732 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 733 { 734 return -EOPNOTSUPP; 735 } 736 737 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 738 { 739 return 0; 740 } 741 742 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 743 { 744 *secid = 0; 745 } 746 747 static inline int security_file_permission(struct file *file, int mask) 748 { 749 return 0; 750 } 751 752 static inline int security_file_alloc(struct file *file) 753 { 754 return 0; 755 } 756 757 static inline void security_file_free(struct file *file) 758 { } 759 760 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 761 unsigned long arg) 762 { 763 return 0; 764 } 765 766 static inline int security_mmap_file(struct file *file, unsigned long prot, 767 unsigned long flags) 768 { 769 return 0; 770 } 771 772 static inline int security_mmap_addr(unsigned long addr) 773 { 774 return cap_mmap_addr(addr); 775 } 776 777 static inline int security_file_mprotect(struct vm_area_struct *vma, 778 unsigned long reqprot, 779 unsigned long prot) 780 { 781 return 0; 782 } 783 784 static inline int security_file_lock(struct file *file, unsigned int cmd) 785 { 786 return 0; 787 } 788 789 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 790 unsigned long arg) 791 { 792 return 0; 793 } 794 795 static inline void security_file_set_fowner(struct file *file) 796 { 797 return; 798 } 799 800 static inline int security_file_send_sigiotask(struct task_struct *tsk, 801 struct fown_struct *fown, 802 int sig) 803 { 804 return 0; 805 } 806 807 static inline int security_file_receive(struct file *file) 808 { 809 return 0; 810 } 811 812 static inline int security_file_open(struct file *file, 813 const struct cred *cred) 814 { 815 return 0; 816 } 817 818 static inline int security_task_create(unsigned long clone_flags) 819 { 820 return 0; 821 } 822 823 static inline void security_task_free(struct task_struct *task) 824 { } 825 826 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 827 { 828 return 0; 829 } 830 831 static inline void security_cred_free(struct cred *cred) 832 { } 833 834 static inline int security_prepare_creds(struct cred *new, 835 const struct cred *old, 836 gfp_t gfp) 837 { 838 return 0; 839 } 840 841 static inline void security_transfer_creds(struct cred *new, 842 const struct cred *old) 843 { 844 } 845 846 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 847 { 848 return 0; 849 } 850 851 static inline int security_kernel_create_files_as(struct cred *cred, 852 struct inode *inode) 853 { 854 return 0; 855 } 856 857 static inline int security_kernel_module_request(char *kmod_name) 858 { 859 return 0; 860 } 861 862 static inline int security_kernel_read_file(struct file *file, 863 enum kernel_read_file_id id) 864 { 865 return 0; 866 } 867 868 static inline int security_kernel_post_read_file(struct file *file, 869 char *buf, loff_t size, 870 enum kernel_read_file_id id) 871 { 872 return 0; 873 } 874 875 static inline int security_task_fix_setuid(struct cred *new, 876 const struct cred *old, 877 int flags) 878 { 879 return cap_task_fix_setuid(new, old, flags); 880 } 881 882 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 883 { 884 return 0; 885 } 886 887 static inline int security_task_getpgid(struct task_struct *p) 888 { 889 return 0; 890 } 891 892 static inline int security_task_getsid(struct task_struct *p) 893 { 894 return 0; 895 } 896 897 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 898 { 899 *secid = 0; 900 } 901 902 static inline int security_task_setnice(struct task_struct *p, int nice) 903 { 904 return cap_task_setnice(p, nice); 905 } 906 907 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 908 { 909 return cap_task_setioprio(p, ioprio); 910 } 911 912 static inline int security_task_getioprio(struct task_struct *p) 913 { 914 return 0; 915 } 916 917 static inline int security_task_setrlimit(struct task_struct *p, 918 unsigned int resource, 919 struct rlimit *new_rlim) 920 { 921 return 0; 922 } 923 924 static inline int security_task_setscheduler(struct task_struct *p) 925 { 926 return cap_task_setscheduler(p); 927 } 928 929 static inline int security_task_getscheduler(struct task_struct *p) 930 { 931 return 0; 932 } 933 934 static inline int security_task_movememory(struct task_struct *p) 935 { 936 return 0; 937 } 938 939 static inline int security_task_kill(struct task_struct *p, 940 struct siginfo *info, int sig, 941 u32 secid) 942 { 943 return 0; 944 } 945 946 static inline int security_task_wait(struct task_struct *p) 947 { 948 return 0; 949 } 950 951 static inline int security_task_prctl(int option, unsigned long arg2, 952 unsigned long arg3, 953 unsigned long arg4, 954 unsigned long arg5) 955 { 956 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 957 } 958 959 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 960 { } 961 962 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 963 short flag) 964 { 965 return 0; 966 } 967 968 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 969 { 970 *secid = 0; 971 } 972 973 static inline int security_msg_msg_alloc(struct msg_msg *msg) 974 { 975 return 0; 976 } 977 978 static inline void security_msg_msg_free(struct msg_msg *msg) 979 { } 980 981 static inline int security_msg_queue_alloc(struct msg_queue *msq) 982 { 983 return 0; 984 } 985 986 static inline void security_msg_queue_free(struct msg_queue *msq) 987 { } 988 989 static inline int security_msg_queue_associate(struct msg_queue *msq, 990 int msqflg) 991 { 992 return 0; 993 } 994 995 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 996 { 997 return 0; 998 } 999 1000 static inline int security_msg_queue_msgsnd(struct msg_queue *msq, 1001 struct msg_msg *msg, int msqflg) 1002 { 1003 return 0; 1004 } 1005 1006 static inline int security_msg_queue_msgrcv(struct msg_queue *msq, 1007 struct msg_msg *msg, 1008 struct task_struct *target, 1009 long type, int mode) 1010 { 1011 return 0; 1012 } 1013 1014 static inline int security_shm_alloc(struct shmid_kernel *shp) 1015 { 1016 return 0; 1017 } 1018 1019 static inline void security_shm_free(struct shmid_kernel *shp) 1020 { } 1021 1022 static inline int security_shm_associate(struct shmid_kernel *shp, 1023 int shmflg) 1024 { 1025 return 0; 1026 } 1027 1028 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 1029 { 1030 return 0; 1031 } 1032 1033 static inline int security_shm_shmat(struct shmid_kernel *shp, 1034 char __user *shmaddr, int shmflg) 1035 { 1036 return 0; 1037 } 1038 1039 static inline int security_sem_alloc(struct sem_array *sma) 1040 { 1041 return 0; 1042 } 1043 1044 static inline void security_sem_free(struct sem_array *sma) 1045 { } 1046 1047 static inline int security_sem_associate(struct sem_array *sma, int semflg) 1048 { 1049 return 0; 1050 } 1051 1052 static inline int security_sem_semctl(struct sem_array *sma, int cmd) 1053 { 1054 return 0; 1055 } 1056 1057 static inline int security_sem_semop(struct sem_array *sma, 1058 struct sembuf *sops, unsigned nsops, 1059 int alter) 1060 { 1061 return 0; 1062 } 1063 1064 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1065 { } 1066 1067 static inline int security_getprocattr(struct task_struct *p, char *name, char **value) 1068 { 1069 return -EINVAL; 1070 } 1071 1072 static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 1073 { 1074 return -EINVAL; 1075 } 1076 1077 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1078 { 1079 return 0; 1080 } 1081 1082 static inline int security_ismaclabel(const char *name) 1083 { 1084 return 0; 1085 } 1086 1087 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1088 { 1089 return -EOPNOTSUPP; 1090 } 1091 1092 static inline int security_secctx_to_secid(const char *secdata, 1093 u32 seclen, 1094 u32 *secid) 1095 { 1096 return -EOPNOTSUPP; 1097 } 1098 1099 static inline void security_release_secctx(char *secdata, u32 seclen) 1100 { 1101 } 1102 1103 static inline void security_inode_invalidate_secctx(struct inode *inode) 1104 { 1105 } 1106 1107 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1108 { 1109 return -EOPNOTSUPP; 1110 } 1111 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1112 { 1113 return -EOPNOTSUPP; 1114 } 1115 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1116 { 1117 return -EOPNOTSUPP; 1118 } 1119 #endif /* CONFIG_SECURITY */ 1120 1121 #ifdef CONFIG_SECURITY_NETWORK 1122 1123 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1124 int security_unix_may_send(struct socket *sock, struct socket *other); 1125 int security_socket_create(int family, int type, int protocol, int kern); 1126 int security_socket_post_create(struct socket *sock, int family, 1127 int type, int protocol, int kern); 1128 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1129 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1130 int security_socket_listen(struct socket *sock, int backlog); 1131 int security_socket_accept(struct socket *sock, struct socket *newsock); 1132 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1133 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1134 int size, int flags); 1135 int security_socket_getsockname(struct socket *sock); 1136 int security_socket_getpeername(struct socket *sock); 1137 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1138 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1139 int security_socket_shutdown(struct socket *sock, int how); 1140 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1141 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1142 int __user *optlen, unsigned len); 1143 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1144 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1145 void security_sk_free(struct sock *sk); 1146 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1147 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1148 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1149 void security_sock_graft(struct sock*sk, struct socket *parent); 1150 int security_inet_conn_request(struct sock *sk, 1151 struct sk_buff *skb, struct request_sock *req); 1152 void security_inet_csk_clone(struct sock *newsk, 1153 const struct request_sock *req); 1154 void security_inet_conn_established(struct sock *sk, 1155 struct sk_buff *skb); 1156 int security_secmark_relabel_packet(u32 secid); 1157 void security_secmark_refcount_inc(void); 1158 void security_secmark_refcount_dec(void); 1159 int security_tun_dev_alloc_security(void **security); 1160 void security_tun_dev_free_security(void *security); 1161 int security_tun_dev_create(void); 1162 int security_tun_dev_attach_queue(void *security); 1163 int security_tun_dev_attach(struct sock *sk, void *security); 1164 int security_tun_dev_open(void *security); 1165 1166 #else /* CONFIG_SECURITY_NETWORK */ 1167 static inline int security_unix_stream_connect(struct sock *sock, 1168 struct sock *other, 1169 struct sock *newsk) 1170 { 1171 return 0; 1172 } 1173 1174 static inline int security_unix_may_send(struct socket *sock, 1175 struct socket *other) 1176 { 1177 return 0; 1178 } 1179 1180 static inline int security_socket_create(int family, int type, 1181 int protocol, int kern) 1182 { 1183 return 0; 1184 } 1185 1186 static inline int security_socket_post_create(struct socket *sock, 1187 int family, 1188 int type, 1189 int protocol, int kern) 1190 { 1191 return 0; 1192 } 1193 1194 static inline int security_socket_bind(struct socket *sock, 1195 struct sockaddr *address, 1196 int addrlen) 1197 { 1198 return 0; 1199 } 1200 1201 static inline int security_socket_connect(struct socket *sock, 1202 struct sockaddr *address, 1203 int addrlen) 1204 { 1205 return 0; 1206 } 1207 1208 static inline int security_socket_listen(struct socket *sock, int backlog) 1209 { 1210 return 0; 1211 } 1212 1213 static inline int security_socket_accept(struct socket *sock, 1214 struct socket *newsock) 1215 { 1216 return 0; 1217 } 1218 1219 static inline int security_socket_sendmsg(struct socket *sock, 1220 struct msghdr *msg, int size) 1221 { 1222 return 0; 1223 } 1224 1225 static inline int security_socket_recvmsg(struct socket *sock, 1226 struct msghdr *msg, int size, 1227 int flags) 1228 { 1229 return 0; 1230 } 1231 1232 static inline int security_socket_getsockname(struct socket *sock) 1233 { 1234 return 0; 1235 } 1236 1237 static inline int security_socket_getpeername(struct socket *sock) 1238 { 1239 return 0; 1240 } 1241 1242 static inline int security_socket_getsockopt(struct socket *sock, 1243 int level, int optname) 1244 { 1245 return 0; 1246 } 1247 1248 static inline int security_socket_setsockopt(struct socket *sock, 1249 int level, int optname) 1250 { 1251 return 0; 1252 } 1253 1254 static inline int security_socket_shutdown(struct socket *sock, int how) 1255 { 1256 return 0; 1257 } 1258 static inline int security_sock_rcv_skb(struct sock *sk, 1259 struct sk_buff *skb) 1260 { 1261 return 0; 1262 } 1263 1264 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1265 int __user *optlen, unsigned len) 1266 { 1267 return -ENOPROTOOPT; 1268 } 1269 1270 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1271 { 1272 return -ENOPROTOOPT; 1273 } 1274 1275 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1276 { 1277 return 0; 1278 } 1279 1280 static inline void security_sk_free(struct sock *sk) 1281 { 1282 } 1283 1284 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1285 { 1286 } 1287 1288 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1289 { 1290 } 1291 1292 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1293 { 1294 } 1295 1296 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1297 { 1298 } 1299 1300 static inline int security_inet_conn_request(struct sock *sk, 1301 struct sk_buff *skb, struct request_sock *req) 1302 { 1303 return 0; 1304 } 1305 1306 static inline void security_inet_csk_clone(struct sock *newsk, 1307 const struct request_sock *req) 1308 { 1309 } 1310 1311 static inline void security_inet_conn_established(struct sock *sk, 1312 struct sk_buff *skb) 1313 { 1314 } 1315 1316 static inline int security_secmark_relabel_packet(u32 secid) 1317 { 1318 return 0; 1319 } 1320 1321 static inline void security_secmark_refcount_inc(void) 1322 { 1323 } 1324 1325 static inline void security_secmark_refcount_dec(void) 1326 { 1327 } 1328 1329 static inline int security_tun_dev_alloc_security(void **security) 1330 { 1331 return 0; 1332 } 1333 1334 static inline void security_tun_dev_free_security(void *security) 1335 { 1336 } 1337 1338 static inline int security_tun_dev_create(void) 1339 { 1340 return 0; 1341 } 1342 1343 static inline int security_tun_dev_attach_queue(void *security) 1344 { 1345 return 0; 1346 } 1347 1348 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1349 { 1350 return 0; 1351 } 1352 1353 static inline int security_tun_dev_open(void *security) 1354 { 1355 return 0; 1356 } 1357 #endif /* CONFIG_SECURITY_NETWORK */ 1358 1359 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1360 1361 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1362 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1363 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1364 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1365 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1366 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1367 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1368 struct xfrm_sec_ctx *polsec, u32 secid); 1369 int security_xfrm_state_delete(struct xfrm_state *x); 1370 void security_xfrm_state_free(struct xfrm_state *x); 1371 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1372 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1373 struct xfrm_policy *xp, 1374 const struct flowi *fl); 1375 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1376 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1377 1378 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1379 1380 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1381 struct xfrm_user_sec_ctx *sec_ctx, 1382 gfp_t gfp) 1383 { 1384 return 0; 1385 } 1386 1387 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1388 { 1389 return 0; 1390 } 1391 1392 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1393 { 1394 } 1395 1396 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1397 { 1398 return 0; 1399 } 1400 1401 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1402 struct xfrm_user_sec_ctx *sec_ctx) 1403 { 1404 return 0; 1405 } 1406 1407 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1408 struct xfrm_sec_ctx *polsec, u32 secid) 1409 { 1410 return 0; 1411 } 1412 1413 static inline void security_xfrm_state_free(struct xfrm_state *x) 1414 { 1415 } 1416 1417 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1418 { 1419 return 0; 1420 } 1421 1422 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1423 { 1424 return 0; 1425 } 1426 1427 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1428 struct xfrm_policy *xp, const struct flowi *fl) 1429 { 1430 return 1; 1431 } 1432 1433 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1434 { 1435 return 0; 1436 } 1437 1438 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1439 { 1440 } 1441 1442 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1443 1444 #ifdef CONFIG_SECURITY_PATH 1445 int security_path_unlink(struct path *dir, struct dentry *dentry); 1446 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode); 1447 int security_path_rmdir(struct path *dir, struct dentry *dentry); 1448 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, 1449 unsigned int dev); 1450 int security_path_truncate(struct path *path); 1451 int security_path_symlink(struct path *dir, struct dentry *dentry, 1452 const char *old_name); 1453 int security_path_link(struct dentry *old_dentry, struct path *new_dir, 1454 struct dentry *new_dentry); 1455 int security_path_rename(struct path *old_dir, struct dentry *old_dentry, 1456 struct path *new_dir, struct dentry *new_dentry, 1457 unsigned int flags); 1458 int security_path_chmod(struct path *path, umode_t mode); 1459 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid); 1460 int security_path_chroot(struct path *path); 1461 #else /* CONFIG_SECURITY_PATH */ 1462 static inline int security_path_unlink(struct path *dir, struct dentry *dentry) 1463 { 1464 return 0; 1465 } 1466 1467 static inline int security_path_mkdir(struct path *dir, struct dentry *dentry, 1468 umode_t mode) 1469 { 1470 return 0; 1471 } 1472 1473 static inline int security_path_rmdir(struct path *dir, struct dentry *dentry) 1474 { 1475 return 0; 1476 } 1477 1478 static inline int security_path_mknod(struct path *dir, struct dentry *dentry, 1479 umode_t mode, unsigned int dev) 1480 { 1481 return 0; 1482 } 1483 1484 static inline int security_path_truncate(struct path *path) 1485 { 1486 return 0; 1487 } 1488 1489 static inline int security_path_symlink(struct path *dir, struct dentry *dentry, 1490 const char *old_name) 1491 { 1492 return 0; 1493 } 1494 1495 static inline int security_path_link(struct dentry *old_dentry, 1496 struct path *new_dir, 1497 struct dentry *new_dentry) 1498 { 1499 return 0; 1500 } 1501 1502 static inline int security_path_rename(struct path *old_dir, 1503 struct dentry *old_dentry, 1504 struct path *new_dir, 1505 struct dentry *new_dentry, 1506 unsigned int flags) 1507 { 1508 return 0; 1509 } 1510 1511 static inline int security_path_chmod(struct path *path, umode_t mode) 1512 { 1513 return 0; 1514 } 1515 1516 static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid) 1517 { 1518 return 0; 1519 } 1520 1521 static inline int security_path_chroot(struct path *path) 1522 { 1523 return 0; 1524 } 1525 #endif /* CONFIG_SECURITY_PATH */ 1526 1527 #ifdef CONFIG_KEYS 1528 #ifdef CONFIG_SECURITY 1529 1530 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1531 void security_key_free(struct key *key); 1532 int security_key_permission(key_ref_t key_ref, 1533 const struct cred *cred, unsigned perm); 1534 int security_key_getsecurity(struct key *key, char **_buffer); 1535 1536 #else 1537 1538 static inline int security_key_alloc(struct key *key, 1539 const struct cred *cred, 1540 unsigned long flags) 1541 { 1542 return 0; 1543 } 1544 1545 static inline void security_key_free(struct key *key) 1546 { 1547 } 1548 1549 static inline int security_key_permission(key_ref_t key_ref, 1550 const struct cred *cred, 1551 unsigned perm) 1552 { 1553 return 0; 1554 } 1555 1556 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1557 { 1558 *_buffer = NULL; 1559 return 0; 1560 } 1561 1562 #endif 1563 #endif /* CONFIG_KEYS */ 1564 1565 #ifdef CONFIG_AUDIT 1566 #ifdef CONFIG_SECURITY 1567 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1568 int security_audit_rule_known(struct audit_krule *krule); 1569 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1570 struct audit_context *actx); 1571 void security_audit_rule_free(void *lsmrule); 1572 1573 #else 1574 1575 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1576 void **lsmrule) 1577 { 1578 return 0; 1579 } 1580 1581 static inline int security_audit_rule_known(struct audit_krule *krule) 1582 { 1583 return 0; 1584 } 1585 1586 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1587 void *lsmrule, struct audit_context *actx) 1588 { 1589 return 0; 1590 } 1591 1592 static inline void security_audit_rule_free(void *lsmrule) 1593 { } 1594 1595 #endif /* CONFIG_SECURITY */ 1596 #endif /* CONFIG_AUDIT */ 1597 1598 #ifdef CONFIG_SECURITYFS 1599 1600 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1601 struct dentry *parent, void *data, 1602 const struct file_operations *fops); 1603 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1604 extern void securityfs_remove(struct dentry *dentry); 1605 1606 #else /* CONFIG_SECURITYFS */ 1607 1608 static inline struct dentry *securityfs_create_dir(const char *name, 1609 struct dentry *parent) 1610 { 1611 return ERR_PTR(-ENODEV); 1612 } 1613 1614 static inline struct dentry *securityfs_create_file(const char *name, 1615 umode_t mode, 1616 struct dentry *parent, 1617 void *data, 1618 const struct file_operations *fops) 1619 { 1620 return ERR_PTR(-ENODEV); 1621 } 1622 1623 static inline void securityfs_remove(struct dentry *dentry) 1624 {} 1625 1626 #endif 1627 1628 #ifdef CONFIG_SECURITY 1629 1630 static inline char *alloc_secdata(void) 1631 { 1632 return (char *)get_zeroed_page(GFP_KERNEL); 1633 } 1634 1635 static inline void free_secdata(void *secdata) 1636 { 1637 free_page((unsigned long)secdata); 1638 } 1639 1640 #else 1641 1642 static inline char *alloc_secdata(void) 1643 { 1644 return (char *)1; 1645 } 1646 1647 static inline void free_secdata(void *secdata) 1648 { } 1649 #endif /* CONFIG_SECURITY */ 1650 1651 #endif /* ! __LINUX_SECURITY_H */ 1652 1653