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 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/key.h> 27 #include <linux/capability.h> 28 #include <linux/fs.h> 29 #include <linux/slab.h> 30 #include <linux/err.h> 31 #include <linux/string.h> 32 #include <linux/mm.h> 33 #include <linux/fs.h> 34 35 struct linux_binprm; 36 struct cred; 37 struct rlimit; 38 struct siginfo; 39 struct sem_array; 40 struct sembuf; 41 struct kern_ipc_perm; 42 struct audit_context; 43 struct super_block; 44 struct inode; 45 struct dentry; 46 struct file; 47 struct vfsmount; 48 struct path; 49 struct qstr; 50 struct iattr; 51 struct fown_struct; 52 struct file_operations; 53 struct shmid_kernel; 54 struct msg_msg; 55 struct msg_queue; 56 struct xattr; 57 struct xfrm_sec_ctx; 58 struct mm_struct; 59 60 /* If capable should audit the security request */ 61 #define SECURITY_CAP_NOAUDIT 0 62 #define SECURITY_CAP_AUDIT 1 63 64 /* LSM Agnostic defines for sb_set_mnt_opts */ 65 #define SECURITY_LSM_NATIVE_LABELS 1 66 67 struct ctl_table; 68 struct audit_krule; 69 struct user_namespace; 70 struct timezone; 71 72 enum lsm_event { 73 LSM_POLICY_CHANGE, 74 }; 75 76 /* These functions are in security/commoncap.c */ 77 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 78 int cap, int audit); 79 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 80 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 81 extern int cap_ptrace_traceme(struct task_struct *parent); 82 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 83 extern int cap_capset(struct cred *new, const struct cred *old, 84 const kernel_cap_t *effective, 85 const kernel_cap_t *inheritable, 86 const kernel_cap_t *permitted); 87 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 88 extern int cap_bprm_secureexec(struct linux_binprm *bprm); 89 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 90 const void *value, size_t size, int flags); 91 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 92 extern int cap_inode_need_killpriv(struct dentry *dentry); 93 extern int cap_inode_killpriv(struct dentry *dentry); 94 extern int cap_mmap_addr(unsigned long addr); 95 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 96 unsigned long prot, unsigned long flags); 97 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 98 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 99 unsigned long arg4, unsigned long arg5); 100 extern int cap_task_setscheduler(struct task_struct *p); 101 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 102 extern int cap_task_setnice(struct task_struct *p, int nice); 103 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 104 105 struct msghdr; 106 struct sk_buff; 107 struct sock; 108 struct sockaddr; 109 struct socket; 110 struct flowi; 111 struct dst_entry; 112 struct xfrm_selector; 113 struct xfrm_policy; 114 struct xfrm_state; 115 struct xfrm_user_sec_ctx; 116 struct seq_file; 117 118 #ifdef CONFIG_MMU 119 extern unsigned long mmap_min_addr; 120 extern unsigned long dac_mmap_min_addr; 121 #else 122 #define mmap_min_addr 0UL 123 #define dac_mmap_min_addr 0UL 124 #endif 125 126 /* 127 * Values used in the task_security_ops calls 128 */ 129 /* setuid or setgid, id0 == uid or gid */ 130 #define LSM_SETID_ID 1 131 132 /* setreuid or setregid, id0 == real, id1 == eff */ 133 #define LSM_SETID_RE 2 134 135 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 136 #define LSM_SETID_RES 4 137 138 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 139 #define LSM_SETID_FS 8 140 141 /* Flags for security_task_prlimit(). */ 142 #define LSM_PRLIMIT_READ 1 143 #define LSM_PRLIMIT_WRITE 2 144 145 /* forward declares to avoid warnings */ 146 struct sched_param; 147 struct request_sock; 148 149 /* bprm->unsafe reasons */ 150 #define LSM_UNSAFE_SHARE 1 151 #define LSM_UNSAFE_PTRACE 2 152 #define LSM_UNSAFE_NO_NEW_PRIVS 4 153 154 #ifdef CONFIG_MMU 155 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 156 void __user *buffer, size_t *lenp, loff_t *ppos); 157 #endif 158 159 /* security_inode_init_security callback function to write xattrs */ 160 typedef int (*initxattrs) (struct inode *inode, 161 const struct xattr *xattr_array, void *fs_data); 162 163 #ifdef CONFIG_SECURITY 164 165 struct security_mnt_opts { 166 char **mnt_opts; 167 int *mnt_opts_flags; 168 int num_mnt_opts; 169 }; 170 171 int call_lsm_notifier(enum lsm_event event, void *data); 172 int register_lsm_notifier(struct notifier_block *nb); 173 int unregister_lsm_notifier(struct notifier_block *nb); 174 175 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 176 { 177 opts->mnt_opts = NULL; 178 opts->mnt_opts_flags = NULL; 179 opts->num_mnt_opts = 0; 180 } 181 182 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 183 { 184 int i; 185 if (opts->mnt_opts) 186 for (i = 0; i < opts->num_mnt_opts; i++) 187 kfree(opts->mnt_opts[i]); 188 kfree(opts->mnt_opts); 189 opts->mnt_opts = NULL; 190 kfree(opts->mnt_opts_flags); 191 opts->mnt_opts_flags = NULL; 192 opts->num_mnt_opts = 0; 193 } 194 195 /* prototypes */ 196 extern int security_init(void); 197 198 /* Security operations */ 199 int security_binder_set_context_mgr(struct task_struct *mgr); 200 int security_binder_transaction(struct task_struct *from, 201 struct task_struct *to); 202 int security_binder_transfer_binder(struct task_struct *from, 203 struct task_struct *to); 204 int security_binder_transfer_file(struct task_struct *from, 205 struct task_struct *to, struct file *file); 206 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 207 int security_ptrace_traceme(struct task_struct *parent); 208 int security_capget(struct task_struct *target, 209 kernel_cap_t *effective, 210 kernel_cap_t *inheritable, 211 kernel_cap_t *permitted); 212 int security_capset(struct cred *new, const struct cred *old, 213 const kernel_cap_t *effective, 214 const kernel_cap_t *inheritable, 215 const kernel_cap_t *permitted); 216 int security_capable(const struct cred *cred, struct user_namespace *ns, 217 int cap); 218 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 219 int cap); 220 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 221 int security_quota_on(struct dentry *dentry); 222 int security_syslog(int type); 223 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 224 static inline int security_settime(const struct timespec *ts, const struct timezone *tz) 225 { 226 struct timespec64 ts64 = timespec_to_timespec64(*ts); 227 228 return security_settime64(&ts64, tz); 229 } 230 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 231 int security_bprm_set_creds(struct linux_binprm *bprm); 232 int security_bprm_check(struct linux_binprm *bprm); 233 void security_bprm_committing_creds(struct linux_binprm *bprm); 234 void security_bprm_committed_creds(struct linux_binprm *bprm); 235 int security_bprm_secureexec(struct linux_binprm *bprm); 236 int security_sb_alloc(struct super_block *sb); 237 void security_sb_free(struct super_block *sb); 238 int security_sb_copy_data(char *orig, char *copy); 239 int security_sb_remount(struct super_block *sb, void *data); 240 int security_sb_kern_mount(struct super_block *sb, int flags, void *data); 241 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 242 int security_sb_statfs(struct dentry *dentry); 243 int security_sb_mount(const char *dev_name, const struct path *path, 244 const char *type, unsigned long flags, void *data); 245 int security_sb_umount(struct vfsmount *mnt, int flags); 246 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 247 int security_sb_set_mnt_opts(struct super_block *sb, 248 struct security_mnt_opts *opts, 249 unsigned long kern_flags, 250 unsigned long *set_kern_flags); 251 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 252 struct super_block *newsb, 253 unsigned long kern_flags, 254 unsigned long *set_kern_flags); 255 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); 256 int security_dentry_init_security(struct dentry *dentry, int mode, 257 const struct qstr *name, void **ctx, 258 u32 *ctxlen); 259 int security_dentry_create_files_as(struct dentry *dentry, int mode, 260 struct qstr *name, 261 const struct cred *old, 262 struct cred *new); 263 264 int security_inode_alloc(struct inode *inode); 265 void security_inode_free(struct inode *inode); 266 int security_inode_init_security(struct inode *inode, struct inode *dir, 267 const struct qstr *qstr, 268 initxattrs initxattrs, void *fs_data); 269 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 270 const struct qstr *qstr, const char **name, 271 void **value, size_t *len); 272 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 273 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 274 struct dentry *new_dentry); 275 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 276 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 277 const char *old_name); 278 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 279 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 280 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 281 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 282 struct inode *new_dir, struct dentry *new_dentry, 283 unsigned int flags); 284 int security_inode_readlink(struct dentry *dentry); 285 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 286 bool rcu); 287 int security_inode_permission(struct inode *inode, int mask); 288 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 289 int security_inode_getattr(const struct path *path); 290 int security_inode_setxattr(struct dentry *dentry, const char *name, 291 const void *value, size_t size, int flags); 292 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 293 const void *value, size_t size, int flags); 294 int security_inode_getxattr(struct dentry *dentry, const char *name); 295 int security_inode_listxattr(struct dentry *dentry); 296 int security_inode_removexattr(struct dentry *dentry, const char *name); 297 int security_inode_need_killpriv(struct dentry *dentry); 298 int security_inode_killpriv(struct dentry *dentry); 299 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 300 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 301 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 302 void security_inode_getsecid(struct inode *inode, u32 *secid); 303 int security_inode_copy_up(struct dentry *src, struct cred **new); 304 int security_inode_copy_up_xattr(const char *name); 305 int security_file_permission(struct file *file, int mask); 306 int security_file_alloc(struct file *file); 307 void security_file_free(struct file *file); 308 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 309 int security_mmap_file(struct file *file, unsigned long prot, 310 unsigned long flags); 311 int security_mmap_addr(unsigned long addr); 312 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 313 unsigned long prot); 314 int security_file_lock(struct file *file, unsigned int cmd); 315 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 316 void security_file_set_fowner(struct file *file); 317 int security_file_send_sigiotask(struct task_struct *tsk, 318 struct fown_struct *fown, int sig); 319 int security_file_receive(struct file *file); 320 int security_file_open(struct file *file, const struct cred *cred); 321 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 322 void security_task_free(struct task_struct *task); 323 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 324 void security_cred_free(struct cred *cred); 325 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 326 void security_transfer_creds(struct cred *new, const struct cred *old); 327 int security_kernel_act_as(struct cred *new, u32 secid); 328 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 329 int security_kernel_module_request(char *kmod_name); 330 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 331 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 332 enum kernel_read_file_id id); 333 int security_task_fix_setuid(struct cred *new, const struct cred *old, 334 int flags); 335 int security_task_setpgid(struct task_struct *p, pid_t pgid); 336 int security_task_getpgid(struct task_struct *p); 337 int security_task_getsid(struct task_struct *p); 338 void security_task_getsecid(struct task_struct *p, u32 *secid); 339 int security_task_setnice(struct task_struct *p, int nice); 340 int security_task_setioprio(struct task_struct *p, int ioprio); 341 int security_task_getioprio(struct task_struct *p); 342 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 343 unsigned int flags); 344 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 345 struct rlimit *new_rlim); 346 int security_task_setscheduler(struct task_struct *p); 347 int security_task_getscheduler(struct task_struct *p); 348 int security_task_movememory(struct task_struct *p); 349 int security_task_kill(struct task_struct *p, struct siginfo *info, 350 int sig, u32 secid); 351 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 352 unsigned long arg4, unsigned long arg5); 353 void security_task_to_inode(struct task_struct *p, struct inode *inode); 354 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 355 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 356 int security_msg_msg_alloc(struct msg_msg *msg); 357 void security_msg_msg_free(struct msg_msg *msg); 358 int security_msg_queue_alloc(struct msg_queue *msq); 359 void security_msg_queue_free(struct msg_queue *msq); 360 int security_msg_queue_associate(struct msg_queue *msq, int msqflg); 361 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd); 362 int security_msg_queue_msgsnd(struct msg_queue *msq, 363 struct msg_msg *msg, int msqflg); 364 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 365 struct task_struct *target, long type, int mode); 366 int security_shm_alloc(struct shmid_kernel *shp); 367 void security_shm_free(struct shmid_kernel *shp); 368 int security_shm_associate(struct shmid_kernel *shp, int shmflg); 369 int security_shm_shmctl(struct shmid_kernel *shp, int cmd); 370 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg); 371 int security_sem_alloc(struct sem_array *sma); 372 void security_sem_free(struct sem_array *sma); 373 int security_sem_associate(struct sem_array *sma, int semflg); 374 int security_sem_semctl(struct sem_array *sma, int cmd); 375 int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 376 unsigned nsops, int alter); 377 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 378 int security_getprocattr(struct task_struct *p, char *name, char **value); 379 int security_setprocattr(const char *name, void *value, size_t size); 380 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 381 int security_ismaclabel(const char *name); 382 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 383 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 384 void security_release_secctx(char *secdata, u32 seclen); 385 386 void security_inode_invalidate_secctx(struct inode *inode); 387 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 388 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 389 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 390 #else /* CONFIG_SECURITY */ 391 struct security_mnt_opts { 392 }; 393 394 static inline int call_lsm_notifier(enum lsm_event event, void *data) 395 { 396 return 0; 397 } 398 399 static inline int register_lsm_notifier(struct notifier_block *nb) 400 { 401 return 0; 402 } 403 404 static inline int unregister_lsm_notifier(struct notifier_block *nb) 405 { 406 return 0; 407 } 408 409 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 410 { 411 } 412 413 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 414 { 415 } 416 417 /* 418 * This is the default capabilities functionality. Most of these functions 419 * are just stubbed out, but a few must call the proper capable code. 420 */ 421 422 static inline int security_init(void) 423 { 424 return 0; 425 } 426 427 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 428 { 429 return 0; 430 } 431 432 static inline int security_binder_transaction(struct task_struct *from, 433 struct task_struct *to) 434 { 435 return 0; 436 } 437 438 static inline int security_binder_transfer_binder(struct task_struct *from, 439 struct task_struct *to) 440 { 441 return 0; 442 } 443 444 static inline int security_binder_transfer_file(struct task_struct *from, 445 struct task_struct *to, 446 struct file *file) 447 { 448 return 0; 449 } 450 451 static inline int security_ptrace_access_check(struct task_struct *child, 452 unsigned int mode) 453 { 454 return cap_ptrace_access_check(child, mode); 455 } 456 457 static inline int security_ptrace_traceme(struct task_struct *parent) 458 { 459 return cap_ptrace_traceme(parent); 460 } 461 462 static inline int security_capget(struct task_struct *target, 463 kernel_cap_t *effective, 464 kernel_cap_t *inheritable, 465 kernel_cap_t *permitted) 466 { 467 return cap_capget(target, effective, inheritable, permitted); 468 } 469 470 static inline int security_capset(struct cred *new, 471 const struct cred *old, 472 const kernel_cap_t *effective, 473 const kernel_cap_t *inheritable, 474 const kernel_cap_t *permitted) 475 { 476 return cap_capset(new, old, effective, inheritable, permitted); 477 } 478 479 static inline int security_capable(const struct cred *cred, 480 struct user_namespace *ns, int cap) 481 { 482 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT); 483 } 484 485 static inline int security_capable_noaudit(const struct cred *cred, 486 struct user_namespace *ns, int cap) { 487 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 488 } 489 490 static inline int security_quotactl(int cmds, int type, int id, 491 struct super_block *sb) 492 { 493 return 0; 494 } 495 496 static inline int security_quota_on(struct dentry *dentry) 497 { 498 return 0; 499 } 500 501 static inline int security_syslog(int type) 502 { 503 return 0; 504 } 505 506 static inline int security_settime64(const struct timespec64 *ts, 507 const struct timezone *tz) 508 { 509 return cap_settime(ts, tz); 510 } 511 512 static inline int security_settime(const struct timespec *ts, 513 const struct timezone *tz) 514 { 515 struct timespec64 ts64 = timespec_to_timespec64(*ts); 516 517 return cap_settime(&ts64, tz); 518 } 519 520 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 521 { 522 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 523 } 524 525 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 526 { 527 return cap_bprm_set_creds(bprm); 528 } 529 530 static inline int security_bprm_check(struct linux_binprm *bprm) 531 { 532 return 0; 533 } 534 535 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 536 { 537 } 538 539 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 540 { 541 } 542 543 static inline int security_bprm_secureexec(struct linux_binprm *bprm) 544 { 545 return cap_bprm_secureexec(bprm); 546 } 547 548 static inline int security_sb_alloc(struct super_block *sb) 549 { 550 return 0; 551 } 552 553 static inline void security_sb_free(struct super_block *sb) 554 { } 555 556 static inline int security_sb_copy_data(char *orig, char *copy) 557 { 558 return 0; 559 } 560 561 static inline int security_sb_remount(struct super_block *sb, void *data) 562 { 563 return 0; 564 } 565 566 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 567 { 568 return 0; 569 } 570 571 static inline int security_sb_show_options(struct seq_file *m, 572 struct super_block *sb) 573 { 574 return 0; 575 } 576 577 static inline int security_sb_statfs(struct dentry *dentry) 578 { 579 return 0; 580 } 581 582 static inline int security_sb_mount(const char *dev_name, const struct path *path, 583 const char *type, unsigned long flags, 584 void *data) 585 { 586 return 0; 587 } 588 589 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 590 { 591 return 0; 592 } 593 594 static inline int security_sb_pivotroot(const struct path *old_path, 595 const struct path *new_path) 596 { 597 return 0; 598 } 599 600 static inline int security_sb_set_mnt_opts(struct super_block *sb, 601 struct security_mnt_opts *opts, 602 unsigned long kern_flags, 603 unsigned long *set_kern_flags) 604 { 605 return 0; 606 } 607 608 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 609 struct super_block *newsb, 610 unsigned long kern_flags, 611 unsigned long *set_kern_flags) 612 { 613 return 0; 614 } 615 616 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 617 { 618 return 0; 619 } 620 621 static inline int security_inode_alloc(struct inode *inode) 622 { 623 return 0; 624 } 625 626 static inline void security_inode_free(struct inode *inode) 627 { } 628 629 static inline int security_dentry_init_security(struct dentry *dentry, 630 int mode, 631 const struct qstr *name, 632 void **ctx, 633 u32 *ctxlen) 634 { 635 return -EOPNOTSUPP; 636 } 637 638 static inline int security_dentry_create_files_as(struct dentry *dentry, 639 int mode, struct qstr *name, 640 const struct cred *old, 641 struct cred *new) 642 { 643 return 0; 644 } 645 646 647 static inline int security_inode_init_security(struct inode *inode, 648 struct inode *dir, 649 const struct qstr *qstr, 650 const initxattrs xattrs, 651 void *fs_data) 652 { 653 return 0; 654 } 655 656 static inline int security_old_inode_init_security(struct inode *inode, 657 struct inode *dir, 658 const struct qstr *qstr, 659 const char **name, 660 void **value, size_t *len) 661 { 662 return -EOPNOTSUPP; 663 } 664 665 static inline int security_inode_create(struct inode *dir, 666 struct dentry *dentry, 667 umode_t mode) 668 { 669 return 0; 670 } 671 672 static inline int security_inode_link(struct dentry *old_dentry, 673 struct inode *dir, 674 struct dentry *new_dentry) 675 { 676 return 0; 677 } 678 679 static inline int security_inode_unlink(struct inode *dir, 680 struct dentry *dentry) 681 { 682 return 0; 683 } 684 685 static inline int security_inode_symlink(struct inode *dir, 686 struct dentry *dentry, 687 const char *old_name) 688 { 689 return 0; 690 } 691 692 static inline int security_inode_mkdir(struct inode *dir, 693 struct dentry *dentry, 694 int mode) 695 { 696 return 0; 697 } 698 699 static inline int security_inode_rmdir(struct inode *dir, 700 struct dentry *dentry) 701 { 702 return 0; 703 } 704 705 static inline int security_inode_mknod(struct inode *dir, 706 struct dentry *dentry, 707 int mode, dev_t dev) 708 { 709 return 0; 710 } 711 712 static inline int security_inode_rename(struct inode *old_dir, 713 struct dentry *old_dentry, 714 struct inode *new_dir, 715 struct dentry *new_dentry, 716 unsigned int flags) 717 { 718 return 0; 719 } 720 721 static inline int security_inode_readlink(struct dentry *dentry) 722 { 723 return 0; 724 } 725 726 static inline int security_inode_follow_link(struct dentry *dentry, 727 struct inode *inode, 728 bool rcu) 729 { 730 return 0; 731 } 732 733 static inline int security_inode_permission(struct inode *inode, int mask) 734 { 735 return 0; 736 } 737 738 static inline int security_inode_setattr(struct dentry *dentry, 739 struct iattr *attr) 740 { 741 return 0; 742 } 743 744 static inline int security_inode_getattr(const struct path *path) 745 { 746 return 0; 747 } 748 749 static inline int security_inode_setxattr(struct dentry *dentry, 750 const char *name, const void *value, size_t size, int flags) 751 { 752 return cap_inode_setxattr(dentry, name, value, size, flags); 753 } 754 755 static inline void security_inode_post_setxattr(struct dentry *dentry, 756 const char *name, const void *value, size_t size, int flags) 757 { } 758 759 static inline int security_inode_getxattr(struct dentry *dentry, 760 const char *name) 761 { 762 return 0; 763 } 764 765 static inline int security_inode_listxattr(struct dentry *dentry) 766 { 767 return 0; 768 } 769 770 static inline int security_inode_removexattr(struct dentry *dentry, 771 const char *name) 772 { 773 return cap_inode_removexattr(dentry, name); 774 } 775 776 static inline int security_inode_need_killpriv(struct dentry *dentry) 777 { 778 return cap_inode_need_killpriv(dentry); 779 } 780 781 static inline int security_inode_killpriv(struct dentry *dentry) 782 { 783 return cap_inode_killpriv(dentry); 784 } 785 786 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 787 { 788 return -EOPNOTSUPP; 789 } 790 791 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 792 { 793 return -EOPNOTSUPP; 794 } 795 796 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 797 { 798 return 0; 799 } 800 801 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 802 { 803 *secid = 0; 804 } 805 806 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 807 { 808 return 0; 809 } 810 811 static inline int security_inode_copy_up_xattr(const char *name) 812 { 813 return -EOPNOTSUPP; 814 } 815 816 static inline int security_file_permission(struct file *file, int mask) 817 { 818 return 0; 819 } 820 821 static inline int security_file_alloc(struct file *file) 822 { 823 return 0; 824 } 825 826 static inline void security_file_free(struct file *file) 827 { } 828 829 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 830 unsigned long arg) 831 { 832 return 0; 833 } 834 835 static inline int security_mmap_file(struct file *file, unsigned long prot, 836 unsigned long flags) 837 { 838 return 0; 839 } 840 841 static inline int security_mmap_addr(unsigned long addr) 842 { 843 return cap_mmap_addr(addr); 844 } 845 846 static inline int security_file_mprotect(struct vm_area_struct *vma, 847 unsigned long reqprot, 848 unsigned long prot) 849 { 850 return 0; 851 } 852 853 static inline int security_file_lock(struct file *file, unsigned int cmd) 854 { 855 return 0; 856 } 857 858 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 859 unsigned long arg) 860 { 861 return 0; 862 } 863 864 static inline void security_file_set_fowner(struct file *file) 865 { 866 return; 867 } 868 869 static inline int security_file_send_sigiotask(struct task_struct *tsk, 870 struct fown_struct *fown, 871 int sig) 872 { 873 return 0; 874 } 875 876 static inline int security_file_receive(struct file *file) 877 { 878 return 0; 879 } 880 881 static inline int security_file_open(struct file *file, 882 const struct cred *cred) 883 { 884 return 0; 885 } 886 887 static inline int security_task_alloc(struct task_struct *task, 888 unsigned long clone_flags) 889 { 890 return 0; 891 } 892 893 static inline void security_task_free(struct task_struct *task) 894 { } 895 896 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 897 { 898 return 0; 899 } 900 901 static inline void security_cred_free(struct cred *cred) 902 { } 903 904 static inline int security_prepare_creds(struct cred *new, 905 const struct cred *old, 906 gfp_t gfp) 907 { 908 return 0; 909 } 910 911 static inline void security_transfer_creds(struct cred *new, 912 const struct cred *old) 913 { 914 } 915 916 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 917 { 918 return 0; 919 } 920 921 static inline int security_kernel_create_files_as(struct cred *cred, 922 struct inode *inode) 923 { 924 return 0; 925 } 926 927 static inline int security_kernel_module_request(char *kmod_name) 928 { 929 return 0; 930 } 931 932 static inline int security_kernel_read_file(struct file *file, 933 enum kernel_read_file_id id) 934 { 935 return 0; 936 } 937 938 static inline int security_kernel_post_read_file(struct file *file, 939 char *buf, loff_t size, 940 enum kernel_read_file_id id) 941 { 942 return 0; 943 } 944 945 static inline int security_task_fix_setuid(struct cred *new, 946 const struct cred *old, 947 int flags) 948 { 949 return cap_task_fix_setuid(new, old, flags); 950 } 951 952 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 953 { 954 return 0; 955 } 956 957 static inline int security_task_getpgid(struct task_struct *p) 958 { 959 return 0; 960 } 961 962 static inline int security_task_getsid(struct task_struct *p) 963 { 964 return 0; 965 } 966 967 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 968 { 969 *secid = 0; 970 } 971 972 static inline int security_task_setnice(struct task_struct *p, int nice) 973 { 974 return cap_task_setnice(p, nice); 975 } 976 977 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 978 { 979 return cap_task_setioprio(p, ioprio); 980 } 981 982 static inline int security_task_getioprio(struct task_struct *p) 983 { 984 return 0; 985 } 986 987 static inline int security_task_prlimit(const struct cred *cred, 988 const struct cred *tcred, 989 unsigned int flags) 990 { 991 return 0; 992 } 993 994 static inline int security_task_setrlimit(struct task_struct *p, 995 unsigned int resource, 996 struct rlimit *new_rlim) 997 { 998 return 0; 999 } 1000 1001 static inline int security_task_setscheduler(struct task_struct *p) 1002 { 1003 return cap_task_setscheduler(p); 1004 } 1005 1006 static inline int security_task_getscheduler(struct task_struct *p) 1007 { 1008 return 0; 1009 } 1010 1011 static inline int security_task_movememory(struct task_struct *p) 1012 { 1013 return 0; 1014 } 1015 1016 static inline int security_task_kill(struct task_struct *p, 1017 struct siginfo *info, int sig, 1018 u32 secid) 1019 { 1020 return 0; 1021 } 1022 1023 static inline int security_task_prctl(int option, unsigned long arg2, 1024 unsigned long arg3, 1025 unsigned long arg4, 1026 unsigned long arg5) 1027 { 1028 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1029 } 1030 1031 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1032 { } 1033 1034 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1035 short flag) 1036 { 1037 return 0; 1038 } 1039 1040 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1041 { 1042 *secid = 0; 1043 } 1044 1045 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1046 { 1047 return 0; 1048 } 1049 1050 static inline void security_msg_msg_free(struct msg_msg *msg) 1051 { } 1052 1053 static inline int security_msg_queue_alloc(struct msg_queue *msq) 1054 { 1055 return 0; 1056 } 1057 1058 static inline void security_msg_queue_free(struct msg_queue *msq) 1059 { } 1060 1061 static inline int security_msg_queue_associate(struct msg_queue *msq, 1062 int msqflg) 1063 { 1064 return 0; 1065 } 1066 1067 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 1068 { 1069 return 0; 1070 } 1071 1072 static inline int security_msg_queue_msgsnd(struct msg_queue *msq, 1073 struct msg_msg *msg, int msqflg) 1074 { 1075 return 0; 1076 } 1077 1078 static inline int security_msg_queue_msgrcv(struct msg_queue *msq, 1079 struct msg_msg *msg, 1080 struct task_struct *target, 1081 long type, int mode) 1082 { 1083 return 0; 1084 } 1085 1086 static inline int security_shm_alloc(struct shmid_kernel *shp) 1087 { 1088 return 0; 1089 } 1090 1091 static inline void security_shm_free(struct shmid_kernel *shp) 1092 { } 1093 1094 static inline int security_shm_associate(struct shmid_kernel *shp, 1095 int shmflg) 1096 { 1097 return 0; 1098 } 1099 1100 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 1101 { 1102 return 0; 1103 } 1104 1105 static inline int security_shm_shmat(struct shmid_kernel *shp, 1106 char __user *shmaddr, int shmflg) 1107 { 1108 return 0; 1109 } 1110 1111 static inline int security_sem_alloc(struct sem_array *sma) 1112 { 1113 return 0; 1114 } 1115 1116 static inline void security_sem_free(struct sem_array *sma) 1117 { } 1118 1119 static inline int security_sem_associate(struct sem_array *sma, int semflg) 1120 { 1121 return 0; 1122 } 1123 1124 static inline int security_sem_semctl(struct sem_array *sma, int cmd) 1125 { 1126 return 0; 1127 } 1128 1129 static inline int security_sem_semop(struct sem_array *sma, 1130 struct sembuf *sops, unsigned nsops, 1131 int alter) 1132 { 1133 return 0; 1134 } 1135 1136 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1137 { } 1138 1139 static inline int security_getprocattr(struct task_struct *p, char *name, char **value) 1140 { 1141 return -EINVAL; 1142 } 1143 1144 static inline int security_setprocattr(char *name, void *value, size_t size) 1145 { 1146 return -EINVAL; 1147 } 1148 1149 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1150 { 1151 return 0; 1152 } 1153 1154 static inline int security_ismaclabel(const char *name) 1155 { 1156 return 0; 1157 } 1158 1159 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1160 { 1161 return -EOPNOTSUPP; 1162 } 1163 1164 static inline int security_secctx_to_secid(const char *secdata, 1165 u32 seclen, 1166 u32 *secid) 1167 { 1168 return -EOPNOTSUPP; 1169 } 1170 1171 static inline void security_release_secctx(char *secdata, u32 seclen) 1172 { 1173 } 1174 1175 static inline void security_inode_invalidate_secctx(struct inode *inode) 1176 { 1177 } 1178 1179 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1180 { 1181 return -EOPNOTSUPP; 1182 } 1183 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1184 { 1185 return -EOPNOTSUPP; 1186 } 1187 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1188 { 1189 return -EOPNOTSUPP; 1190 } 1191 #endif /* CONFIG_SECURITY */ 1192 1193 #ifdef CONFIG_SECURITY_NETWORK 1194 1195 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1196 int security_unix_may_send(struct socket *sock, struct socket *other); 1197 int security_socket_create(int family, int type, int protocol, int kern); 1198 int security_socket_post_create(struct socket *sock, int family, 1199 int type, int protocol, int kern); 1200 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1201 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1202 int security_socket_listen(struct socket *sock, int backlog); 1203 int security_socket_accept(struct socket *sock, struct socket *newsock); 1204 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1205 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1206 int size, int flags); 1207 int security_socket_getsockname(struct socket *sock); 1208 int security_socket_getpeername(struct socket *sock); 1209 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1210 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1211 int security_socket_shutdown(struct socket *sock, int how); 1212 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1213 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1214 int __user *optlen, unsigned len); 1215 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1216 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1217 void security_sk_free(struct sock *sk); 1218 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1219 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1220 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1221 void security_sock_graft(struct sock*sk, struct socket *parent); 1222 int security_inet_conn_request(struct sock *sk, 1223 struct sk_buff *skb, struct request_sock *req); 1224 void security_inet_csk_clone(struct sock *newsk, 1225 const struct request_sock *req); 1226 void security_inet_conn_established(struct sock *sk, 1227 struct sk_buff *skb); 1228 int security_secmark_relabel_packet(u32 secid); 1229 void security_secmark_refcount_inc(void); 1230 void security_secmark_refcount_dec(void); 1231 int security_tun_dev_alloc_security(void **security); 1232 void security_tun_dev_free_security(void *security); 1233 int security_tun_dev_create(void); 1234 int security_tun_dev_attach_queue(void *security); 1235 int security_tun_dev_attach(struct sock *sk, void *security); 1236 int security_tun_dev_open(void *security); 1237 1238 #else /* CONFIG_SECURITY_NETWORK */ 1239 static inline int security_unix_stream_connect(struct sock *sock, 1240 struct sock *other, 1241 struct sock *newsk) 1242 { 1243 return 0; 1244 } 1245 1246 static inline int security_unix_may_send(struct socket *sock, 1247 struct socket *other) 1248 { 1249 return 0; 1250 } 1251 1252 static inline int security_socket_create(int family, int type, 1253 int protocol, int kern) 1254 { 1255 return 0; 1256 } 1257 1258 static inline int security_socket_post_create(struct socket *sock, 1259 int family, 1260 int type, 1261 int protocol, int kern) 1262 { 1263 return 0; 1264 } 1265 1266 static inline int security_socket_bind(struct socket *sock, 1267 struct sockaddr *address, 1268 int addrlen) 1269 { 1270 return 0; 1271 } 1272 1273 static inline int security_socket_connect(struct socket *sock, 1274 struct sockaddr *address, 1275 int addrlen) 1276 { 1277 return 0; 1278 } 1279 1280 static inline int security_socket_listen(struct socket *sock, int backlog) 1281 { 1282 return 0; 1283 } 1284 1285 static inline int security_socket_accept(struct socket *sock, 1286 struct socket *newsock) 1287 { 1288 return 0; 1289 } 1290 1291 static inline int security_socket_sendmsg(struct socket *sock, 1292 struct msghdr *msg, int size) 1293 { 1294 return 0; 1295 } 1296 1297 static inline int security_socket_recvmsg(struct socket *sock, 1298 struct msghdr *msg, int size, 1299 int flags) 1300 { 1301 return 0; 1302 } 1303 1304 static inline int security_socket_getsockname(struct socket *sock) 1305 { 1306 return 0; 1307 } 1308 1309 static inline int security_socket_getpeername(struct socket *sock) 1310 { 1311 return 0; 1312 } 1313 1314 static inline int security_socket_getsockopt(struct socket *sock, 1315 int level, int optname) 1316 { 1317 return 0; 1318 } 1319 1320 static inline int security_socket_setsockopt(struct socket *sock, 1321 int level, int optname) 1322 { 1323 return 0; 1324 } 1325 1326 static inline int security_socket_shutdown(struct socket *sock, int how) 1327 { 1328 return 0; 1329 } 1330 static inline int security_sock_rcv_skb(struct sock *sk, 1331 struct sk_buff *skb) 1332 { 1333 return 0; 1334 } 1335 1336 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1337 int __user *optlen, unsigned len) 1338 { 1339 return -ENOPROTOOPT; 1340 } 1341 1342 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1343 { 1344 return -ENOPROTOOPT; 1345 } 1346 1347 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1348 { 1349 return 0; 1350 } 1351 1352 static inline void security_sk_free(struct sock *sk) 1353 { 1354 } 1355 1356 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1357 { 1358 } 1359 1360 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1361 { 1362 } 1363 1364 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1365 { 1366 } 1367 1368 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1369 { 1370 } 1371 1372 static inline int security_inet_conn_request(struct sock *sk, 1373 struct sk_buff *skb, struct request_sock *req) 1374 { 1375 return 0; 1376 } 1377 1378 static inline void security_inet_csk_clone(struct sock *newsk, 1379 const struct request_sock *req) 1380 { 1381 } 1382 1383 static inline void security_inet_conn_established(struct sock *sk, 1384 struct sk_buff *skb) 1385 { 1386 } 1387 1388 static inline int security_secmark_relabel_packet(u32 secid) 1389 { 1390 return 0; 1391 } 1392 1393 static inline void security_secmark_refcount_inc(void) 1394 { 1395 } 1396 1397 static inline void security_secmark_refcount_dec(void) 1398 { 1399 } 1400 1401 static inline int security_tun_dev_alloc_security(void **security) 1402 { 1403 return 0; 1404 } 1405 1406 static inline void security_tun_dev_free_security(void *security) 1407 { 1408 } 1409 1410 static inline int security_tun_dev_create(void) 1411 { 1412 return 0; 1413 } 1414 1415 static inline int security_tun_dev_attach_queue(void *security) 1416 { 1417 return 0; 1418 } 1419 1420 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1421 { 1422 return 0; 1423 } 1424 1425 static inline int security_tun_dev_open(void *security) 1426 { 1427 return 0; 1428 } 1429 #endif /* CONFIG_SECURITY_NETWORK */ 1430 1431 #ifdef CONFIG_SECURITY_INFINIBAND 1432 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1433 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1434 int security_ib_alloc_security(void **sec); 1435 void security_ib_free_security(void *sec); 1436 #else /* CONFIG_SECURITY_INFINIBAND */ 1437 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1438 { 1439 return 0; 1440 } 1441 1442 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1443 { 1444 return 0; 1445 } 1446 1447 static inline int security_ib_alloc_security(void **sec) 1448 { 1449 return 0; 1450 } 1451 1452 static inline void security_ib_free_security(void *sec) 1453 { 1454 } 1455 #endif /* CONFIG_SECURITY_INFINIBAND */ 1456 1457 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1458 1459 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1460 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1461 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1462 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1463 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1464 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1465 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1466 struct xfrm_sec_ctx *polsec, u32 secid); 1467 int security_xfrm_state_delete(struct xfrm_state *x); 1468 void security_xfrm_state_free(struct xfrm_state *x); 1469 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1470 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1471 struct xfrm_policy *xp, 1472 const struct flowi *fl); 1473 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1474 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1475 1476 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1477 1478 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1479 struct xfrm_user_sec_ctx *sec_ctx, 1480 gfp_t gfp) 1481 { 1482 return 0; 1483 } 1484 1485 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1486 { 1487 return 0; 1488 } 1489 1490 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1491 { 1492 } 1493 1494 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1495 { 1496 return 0; 1497 } 1498 1499 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1500 struct xfrm_user_sec_ctx *sec_ctx) 1501 { 1502 return 0; 1503 } 1504 1505 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1506 struct xfrm_sec_ctx *polsec, u32 secid) 1507 { 1508 return 0; 1509 } 1510 1511 static inline void security_xfrm_state_free(struct xfrm_state *x) 1512 { 1513 } 1514 1515 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1516 { 1517 return 0; 1518 } 1519 1520 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1521 { 1522 return 0; 1523 } 1524 1525 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1526 struct xfrm_policy *xp, const struct flowi *fl) 1527 { 1528 return 1; 1529 } 1530 1531 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1532 { 1533 return 0; 1534 } 1535 1536 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1537 { 1538 } 1539 1540 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1541 1542 #ifdef CONFIG_SECURITY_PATH 1543 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1544 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1545 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1546 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1547 unsigned int dev); 1548 int security_path_truncate(const struct path *path); 1549 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1550 const char *old_name); 1551 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1552 struct dentry *new_dentry); 1553 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1554 const struct path *new_dir, struct dentry *new_dentry, 1555 unsigned int flags); 1556 int security_path_chmod(const struct path *path, umode_t mode); 1557 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1558 int security_path_chroot(const struct path *path); 1559 #else /* CONFIG_SECURITY_PATH */ 1560 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1561 { 1562 return 0; 1563 } 1564 1565 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1566 umode_t mode) 1567 { 1568 return 0; 1569 } 1570 1571 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1572 { 1573 return 0; 1574 } 1575 1576 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1577 umode_t mode, unsigned int dev) 1578 { 1579 return 0; 1580 } 1581 1582 static inline int security_path_truncate(const struct path *path) 1583 { 1584 return 0; 1585 } 1586 1587 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1588 const char *old_name) 1589 { 1590 return 0; 1591 } 1592 1593 static inline int security_path_link(struct dentry *old_dentry, 1594 const struct path *new_dir, 1595 struct dentry *new_dentry) 1596 { 1597 return 0; 1598 } 1599 1600 static inline int security_path_rename(const struct path *old_dir, 1601 struct dentry *old_dentry, 1602 const struct path *new_dir, 1603 struct dentry *new_dentry, 1604 unsigned int flags) 1605 { 1606 return 0; 1607 } 1608 1609 static inline int security_path_chmod(const struct path *path, umode_t mode) 1610 { 1611 return 0; 1612 } 1613 1614 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1615 { 1616 return 0; 1617 } 1618 1619 static inline int security_path_chroot(const struct path *path) 1620 { 1621 return 0; 1622 } 1623 #endif /* CONFIG_SECURITY_PATH */ 1624 1625 #ifdef CONFIG_KEYS 1626 #ifdef CONFIG_SECURITY 1627 1628 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1629 void security_key_free(struct key *key); 1630 int security_key_permission(key_ref_t key_ref, 1631 const struct cred *cred, unsigned perm); 1632 int security_key_getsecurity(struct key *key, char **_buffer); 1633 1634 #else 1635 1636 static inline int security_key_alloc(struct key *key, 1637 const struct cred *cred, 1638 unsigned long flags) 1639 { 1640 return 0; 1641 } 1642 1643 static inline void security_key_free(struct key *key) 1644 { 1645 } 1646 1647 static inline int security_key_permission(key_ref_t key_ref, 1648 const struct cred *cred, 1649 unsigned perm) 1650 { 1651 return 0; 1652 } 1653 1654 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1655 { 1656 *_buffer = NULL; 1657 return 0; 1658 } 1659 1660 #endif 1661 #endif /* CONFIG_KEYS */ 1662 1663 #ifdef CONFIG_AUDIT 1664 #ifdef CONFIG_SECURITY 1665 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1666 int security_audit_rule_known(struct audit_krule *krule); 1667 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1668 struct audit_context *actx); 1669 void security_audit_rule_free(void *lsmrule); 1670 1671 #else 1672 1673 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1674 void **lsmrule) 1675 { 1676 return 0; 1677 } 1678 1679 static inline int security_audit_rule_known(struct audit_krule *krule) 1680 { 1681 return 0; 1682 } 1683 1684 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1685 void *lsmrule, struct audit_context *actx) 1686 { 1687 return 0; 1688 } 1689 1690 static inline void security_audit_rule_free(void *lsmrule) 1691 { } 1692 1693 #endif /* CONFIG_SECURITY */ 1694 #endif /* CONFIG_AUDIT */ 1695 1696 #ifdef CONFIG_SECURITYFS 1697 1698 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1699 struct dentry *parent, void *data, 1700 const struct file_operations *fops); 1701 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1702 struct dentry *securityfs_create_symlink(const char *name, 1703 struct dentry *parent, 1704 const char *target, 1705 const struct inode_operations *iops); 1706 extern void securityfs_remove(struct dentry *dentry); 1707 1708 #else /* CONFIG_SECURITYFS */ 1709 1710 static inline struct dentry *securityfs_create_dir(const char *name, 1711 struct dentry *parent) 1712 { 1713 return ERR_PTR(-ENODEV); 1714 } 1715 1716 static inline struct dentry *securityfs_create_file(const char *name, 1717 umode_t mode, 1718 struct dentry *parent, 1719 void *data, 1720 const struct file_operations *fops) 1721 { 1722 return ERR_PTR(-ENODEV); 1723 } 1724 1725 static inline struct dentry *securityfs_create_symlink(const char *name, 1726 struct dentry *parent, 1727 const char *target, 1728 const struct inode_operations *iops) 1729 { 1730 return ERR_PTR(-ENODEV); 1731 } 1732 1733 static inline void securityfs_remove(struct dentry *dentry) 1734 {} 1735 1736 #endif 1737 1738 #ifdef CONFIG_SECURITY 1739 1740 static inline char *alloc_secdata(void) 1741 { 1742 return (char *)get_zeroed_page(GFP_KERNEL); 1743 } 1744 1745 static inline void free_secdata(void *secdata) 1746 { 1747 free_page((unsigned long)secdata); 1748 } 1749 1750 #else 1751 1752 static inline char *alloc_secdata(void) 1753 { 1754 return (char *)1; 1755 } 1756 1757 static inline void free_secdata(void *secdata) 1758 { } 1759 #endif /* CONFIG_SECURITY */ 1760 1761 #endif /* ! __LINUX_SECURITY_H */ 1762 1763