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_inode_setxattr(struct dentry *dentry, const char *name, 89 const void *value, size_t size, int flags); 90 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 91 extern int cap_inode_need_killpriv(struct dentry *dentry); 92 extern int cap_inode_killpriv(struct dentry *dentry); 93 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 94 void **buffer, bool alloc); 95 extern int cap_mmap_addr(unsigned long addr); 96 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 97 unsigned long prot, unsigned long flags); 98 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 99 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 100 unsigned long arg4, unsigned long arg5); 101 extern int cap_task_setscheduler(struct task_struct *p); 102 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 103 extern int cap_task_setnice(struct task_struct *p, int nice); 104 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 105 106 struct msghdr; 107 struct sk_buff; 108 struct sock; 109 struct sockaddr; 110 struct socket; 111 struct flowi; 112 struct dst_entry; 113 struct xfrm_selector; 114 struct xfrm_policy; 115 struct xfrm_state; 116 struct xfrm_user_sec_ctx; 117 struct seq_file; 118 119 #ifdef CONFIG_MMU 120 extern unsigned long mmap_min_addr; 121 extern unsigned long dac_mmap_min_addr; 122 #else 123 #define mmap_min_addr 0UL 124 #define dac_mmap_min_addr 0UL 125 #endif 126 127 /* 128 * Values used in the task_security_ops calls 129 */ 130 /* setuid or setgid, id0 == uid or gid */ 131 #define LSM_SETID_ID 1 132 133 /* setreuid or setregid, id0 == real, id1 == eff */ 134 #define LSM_SETID_RE 2 135 136 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 137 #define LSM_SETID_RES 4 138 139 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 140 #define LSM_SETID_FS 8 141 142 /* Flags for security_task_prlimit(). */ 143 #define LSM_PRLIMIT_READ 1 144 #define LSM_PRLIMIT_WRITE 2 145 146 /* forward declares to avoid warnings */ 147 struct sched_param; 148 struct request_sock; 149 150 /* bprm->unsafe reasons */ 151 #define LSM_UNSAFE_SHARE 1 152 #define LSM_UNSAFE_PTRACE 2 153 #define LSM_UNSAFE_NO_NEW_PRIVS 4 154 155 #ifdef CONFIG_MMU 156 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 157 void __user *buffer, size_t *lenp, loff_t *ppos); 158 #endif 159 160 /* security_inode_init_security callback function to write xattrs */ 161 typedef int (*initxattrs) (struct inode *inode, 162 const struct xattr *xattr_array, void *fs_data); 163 164 #ifdef CONFIG_SECURITY 165 166 struct security_mnt_opts { 167 char **mnt_opts; 168 int *mnt_opts_flags; 169 int num_mnt_opts; 170 }; 171 172 int call_lsm_notifier(enum lsm_event event, void *data); 173 int register_lsm_notifier(struct notifier_block *nb); 174 int unregister_lsm_notifier(struct notifier_block *nb); 175 176 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 177 { 178 opts->mnt_opts = NULL; 179 opts->mnt_opts_flags = NULL; 180 opts->num_mnt_opts = 0; 181 } 182 183 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 184 { 185 int i; 186 if (opts->mnt_opts) 187 for (i = 0; i < opts->num_mnt_opts; i++) 188 kfree(opts->mnt_opts[i]); 189 kfree(opts->mnt_opts); 190 opts->mnt_opts = NULL; 191 kfree(opts->mnt_opts_flags); 192 opts->mnt_opts_flags = NULL; 193 opts->num_mnt_opts = 0; 194 } 195 196 /* prototypes */ 197 extern int security_init(void); 198 199 /* Security operations */ 200 int security_binder_set_context_mgr(struct task_struct *mgr); 201 int security_binder_transaction(struct task_struct *from, 202 struct task_struct *to); 203 int security_binder_transfer_binder(struct task_struct *from, 204 struct task_struct *to); 205 int security_binder_transfer_file(struct task_struct *from, 206 struct task_struct *to, struct file *file); 207 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 208 int security_ptrace_traceme(struct task_struct *parent); 209 int security_capget(struct task_struct *target, 210 kernel_cap_t *effective, 211 kernel_cap_t *inheritable, 212 kernel_cap_t *permitted); 213 int security_capset(struct cred *new, const struct cred *old, 214 const kernel_cap_t *effective, 215 const kernel_cap_t *inheritable, 216 const kernel_cap_t *permitted); 217 int security_capable(const struct cred *cred, struct user_namespace *ns, 218 int cap); 219 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 220 int cap); 221 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 222 int security_quota_on(struct dentry *dentry); 223 int security_syslog(int type); 224 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 225 static inline int security_settime(const struct timespec *ts, const struct timezone *tz) 226 { 227 struct timespec64 ts64 = timespec_to_timespec64(*ts); 228 229 return security_settime64(&ts64, tz); 230 } 231 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 232 int security_bprm_set_creds(struct linux_binprm *bprm); 233 int security_bprm_check(struct linux_binprm *bprm); 234 void security_bprm_committing_creds(struct linux_binprm *bprm); 235 void security_bprm_committed_creds(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_sb_alloc(struct super_block *sb) 544 { 545 return 0; 546 } 547 548 static inline void security_sb_free(struct super_block *sb) 549 { } 550 551 static inline int security_sb_copy_data(char *orig, char *copy) 552 { 553 return 0; 554 } 555 556 static inline int security_sb_remount(struct super_block *sb, void *data) 557 { 558 return 0; 559 } 560 561 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 562 { 563 return 0; 564 } 565 566 static inline int security_sb_show_options(struct seq_file *m, 567 struct super_block *sb) 568 { 569 return 0; 570 } 571 572 static inline int security_sb_statfs(struct dentry *dentry) 573 { 574 return 0; 575 } 576 577 static inline int security_sb_mount(const char *dev_name, const struct path *path, 578 const char *type, unsigned long flags, 579 void *data) 580 { 581 return 0; 582 } 583 584 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 585 { 586 return 0; 587 } 588 589 static inline int security_sb_pivotroot(const struct path *old_path, 590 const struct path *new_path) 591 { 592 return 0; 593 } 594 595 static inline int security_sb_set_mnt_opts(struct super_block *sb, 596 struct security_mnt_opts *opts, 597 unsigned long kern_flags, 598 unsigned long *set_kern_flags) 599 { 600 return 0; 601 } 602 603 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 604 struct super_block *newsb, 605 unsigned long kern_flags, 606 unsigned long *set_kern_flags) 607 { 608 return 0; 609 } 610 611 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 612 { 613 return 0; 614 } 615 616 static inline int security_inode_alloc(struct inode *inode) 617 { 618 return 0; 619 } 620 621 static inline void security_inode_free(struct inode *inode) 622 { } 623 624 static inline int security_dentry_init_security(struct dentry *dentry, 625 int mode, 626 const struct qstr *name, 627 void **ctx, 628 u32 *ctxlen) 629 { 630 return -EOPNOTSUPP; 631 } 632 633 static inline int security_dentry_create_files_as(struct dentry *dentry, 634 int mode, struct qstr *name, 635 const struct cred *old, 636 struct cred *new) 637 { 638 return 0; 639 } 640 641 642 static inline int security_inode_init_security(struct inode *inode, 643 struct inode *dir, 644 const struct qstr *qstr, 645 const initxattrs xattrs, 646 void *fs_data) 647 { 648 return 0; 649 } 650 651 static inline int security_old_inode_init_security(struct inode *inode, 652 struct inode *dir, 653 const struct qstr *qstr, 654 const char **name, 655 void **value, size_t *len) 656 { 657 return -EOPNOTSUPP; 658 } 659 660 static inline int security_inode_create(struct inode *dir, 661 struct dentry *dentry, 662 umode_t mode) 663 { 664 return 0; 665 } 666 667 static inline int security_inode_link(struct dentry *old_dentry, 668 struct inode *dir, 669 struct dentry *new_dentry) 670 { 671 return 0; 672 } 673 674 static inline int security_inode_unlink(struct inode *dir, 675 struct dentry *dentry) 676 { 677 return 0; 678 } 679 680 static inline int security_inode_symlink(struct inode *dir, 681 struct dentry *dentry, 682 const char *old_name) 683 { 684 return 0; 685 } 686 687 static inline int security_inode_mkdir(struct inode *dir, 688 struct dentry *dentry, 689 int mode) 690 { 691 return 0; 692 } 693 694 static inline int security_inode_rmdir(struct inode *dir, 695 struct dentry *dentry) 696 { 697 return 0; 698 } 699 700 static inline int security_inode_mknod(struct inode *dir, 701 struct dentry *dentry, 702 int mode, dev_t dev) 703 { 704 return 0; 705 } 706 707 static inline int security_inode_rename(struct inode *old_dir, 708 struct dentry *old_dentry, 709 struct inode *new_dir, 710 struct dentry *new_dentry, 711 unsigned int flags) 712 { 713 return 0; 714 } 715 716 static inline int security_inode_readlink(struct dentry *dentry) 717 { 718 return 0; 719 } 720 721 static inline int security_inode_follow_link(struct dentry *dentry, 722 struct inode *inode, 723 bool rcu) 724 { 725 return 0; 726 } 727 728 static inline int security_inode_permission(struct inode *inode, int mask) 729 { 730 return 0; 731 } 732 733 static inline int security_inode_setattr(struct dentry *dentry, 734 struct iattr *attr) 735 { 736 return 0; 737 } 738 739 static inline int security_inode_getattr(const struct path *path) 740 { 741 return 0; 742 } 743 744 static inline int security_inode_setxattr(struct dentry *dentry, 745 const char *name, const void *value, size_t size, int flags) 746 { 747 return cap_inode_setxattr(dentry, name, value, size, flags); 748 } 749 750 static inline void security_inode_post_setxattr(struct dentry *dentry, 751 const char *name, const void *value, size_t size, int flags) 752 { } 753 754 static inline int security_inode_getxattr(struct dentry *dentry, 755 const char *name) 756 { 757 return 0; 758 } 759 760 static inline int security_inode_listxattr(struct dentry *dentry) 761 { 762 return 0; 763 } 764 765 static inline int security_inode_removexattr(struct dentry *dentry, 766 const char *name) 767 { 768 return cap_inode_removexattr(dentry, name); 769 } 770 771 static inline int security_inode_need_killpriv(struct dentry *dentry) 772 { 773 return cap_inode_need_killpriv(dentry); 774 } 775 776 static inline int security_inode_killpriv(struct dentry *dentry) 777 { 778 return cap_inode_killpriv(dentry); 779 } 780 781 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 782 { 783 return -EOPNOTSUPP; 784 } 785 786 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 787 { 788 return -EOPNOTSUPP; 789 } 790 791 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 792 { 793 return 0; 794 } 795 796 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 797 { 798 *secid = 0; 799 } 800 801 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 802 { 803 return 0; 804 } 805 806 static inline int security_inode_copy_up_xattr(const char *name) 807 { 808 return -EOPNOTSUPP; 809 } 810 811 static inline int security_file_permission(struct file *file, int mask) 812 { 813 return 0; 814 } 815 816 static inline int security_file_alloc(struct file *file) 817 { 818 return 0; 819 } 820 821 static inline void security_file_free(struct file *file) 822 { } 823 824 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 825 unsigned long arg) 826 { 827 return 0; 828 } 829 830 static inline int security_mmap_file(struct file *file, unsigned long prot, 831 unsigned long flags) 832 { 833 return 0; 834 } 835 836 static inline int security_mmap_addr(unsigned long addr) 837 { 838 return cap_mmap_addr(addr); 839 } 840 841 static inline int security_file_mprotect(struct vm_area_struct *vma, 842 unsigned long reqprot, 843 unsigned long prot) 844 { 845 return 0; 846 } 847 848 static inline int security_file_lock(struct file *file, unsigned int cmd) 849 { 850 return 0; 851 } 852 853 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 854 unsigned long arg) 855 { 856 return 0; 857 } 858 859 static inline void security_file_set_fowner(struct file *file) 860 { 861 return; 862 } 863 864 static inline int security_file_send_sigiotask(struct task_struct *tsk, 865 struct fown_struct *fown, 866 int sig) 867 { 868 return 0; 869 } 870 871 static inline int security_file_receive(struct file *file) 872 { 873 return 0; 874 } 875 876 static inline int security_file_open(struct file *file, 877 const struct cred *cred) 878 { 879 return 0; 880 } 881 882 static inline int security_task_alloc(struct task_struct *task, 883 unsigned long clone_flags) 884 { 885 return 0; 886 } 887 888 static inline void security_task_free(struct task_struct *task) 889 { } 890 891 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 892 { 893 return 0; 894 } 895 896 static inline void security_cred_free(struct cred *cred) 897 { } 898 899 static inline int security_prepare_creds(struct cred *new, 900 const struct cred *old, 901 gfp_t gfp) 902 { 903 return 0; 904 } 905 906 static inline void security_transfer_creds(struct cred *new, 907 const struct cred *old) 908 { 909 } 910 911 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 912 { 913 return 0; 914 } 915 916 static inline int security_kernel_create_files_as(struct cred *cred, 917 struct inode *inode) 918 { 919 return 0; 920 } 921 922 static inline int security_kernel_module_request(char *kmod_name) 923 { 924 return 0; 925 } 926 927 static inline int security_kernel_read_file(struct file *file, 928 enum kernel_read_file_id id) 929 { 930 return 0; 931 } 932 933 static inline int security_kernel_post_read_file(struct file *file, 934 char *buf, loff_t size, 935 enum kernel_read_file_id id) 936 { 937 return 0; 938 } 939 940 static inline int security_task_fix_setuid(struct cred *new, 941 const struct cred *old, 942 int flags) 943 { 944 return cap_task_fix_setuid(new, old, flags); 945 } 946 947 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 948 { 949 return 0; 950 } 951 952 static inline int security_task_getpgid(struct task_struct *p) 953 { 954 return 0; 955 } 956 957 static inline int security_task_getsid(struct task_struct *p) 958 { 959 return 0; 960 } 961 962 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 963 { 964 *secid = 0; 965 } 966 967 static inline int security_task_setnice(struct task_struct *p, int nice) 968 { 969 return cap_task_setnice(p, nice); 970 } 971 972 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 973 { 974 return cap_task_setioprio(p, ioprio); 975 } 976 977 static inline int security_task_getioprio(struct task_struct *p) 978 { 979 return 0; 980 } 981 982 static inline int security_task_prlimit(const struct cred *cred, 983 const struct cred *tcred, 984 unsigned int flags) 985 { 986 return 0; 987 } 988 989 static inline int security_task_setrlimit(struct task_struct *p, 990 unsigned int resource, 991 struct rlimit *new_rlim) 992 { 993 return 0; 994 } 995 996 static inline int security_task_setscheduler(struct task_struct *p) 997 { 998 return cap_task_setscheduler(p); 999 } 1000 1001 static inline int security_task_getscheduler(struct task_struct *p) 1002 { 1003 return 0; 1004 } 1005 1006 static inline int security_task_movememory(struct task_struct *p) 1007 { 1008 return 0; 1009 } 1010 1011 static inline int security_task_kill(struct task_struct *p, 1012 struct siginfo *info, int sig, 1013 u32 secid) 1014 { 1015 return 0; 1016 } 1017 1018 static inline int security_task_prctl(int option, unsigned long arg2, 1019 unsigned long arg3, 1020 unsigned long arg4, 1021 unsigned long arg5) 1022 { 1023 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1024 } 1025 1026 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1027 { } 1028 1029 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1030 short flag) 1031 { 1032 return 0; 1033 } 1034 1035 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1036 { 1037 *secid = 0; 1038 } 1039 1040 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1041 { 1042 return 0; 1043 } 1044 1045 static inline void security_msg_msg_free(struct msg_msg *msg) 1046 { } 1047 1048 static inline int security_msg_queue_alloc(struct msg_queue *msq) 1049 { 1050 return 0; 1051 } 1052 1053 static inline void security_msg_queue_free(struct msg_queue *msq) 1054 { } 1055 1056 static inline int security_msg_queue_associate(struct msg_queue *msq, 1057 int msqflg) 1058 { 1059 return 0; 1060 } 1061 1062 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 1063 { 1064 return 0; 1065 } 1066 1067 static inline int security_msg_queue_msgsnd(struct msg_queue *msq, 1068 struct msg_msg *msg, int msqflg) 1069 { 1070 return 0; 1071 } 1072 1073 static inline int security_msg_queue_msgrcv(struct msg_queue *msq, 1074 struct msg_msg *msg, 1075 struct task_struct *target, 1076 long type, int mode) 1077 { 1078 return 0; 1079 } 1080 1081 static inline int security_shm_alloc(struct shmid_kernel *shp) 1082 { 1083 return 0; 1084 } 1085 1086 static inline void security_shm_free(struct shmid_kernel *shp) 1087 { } 1088 1089 static inline int security_shm_associate(struct shmid_kernel *shp, 1090 int shmflg) 1091 { 1092 return 0; 1093 } 1094 1095 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 1096 { 1097 return 0; 1098 } 1099 1100 static inline int security_shm_shmat(struct shmid_kernel *shp, 1101 char __user *shmaddr, int shmflg) 1102 { 1103 return 0; 1104 } 1105 1106 static inline int security_sem_alloc(struct sem_array *sma) 1107 { 1108 return 0; 1109 } 1110 1111 static inline void security_sem_free(struct sem_array *sma) 1112 { } 1113 1114 static inline int security_sem_associate(struct sem_array *sma, int semflg) 1115 { 1116 return 0; 1117 } 1118 1119 static inline int security_sem_semctl(struct sem_array *sma, int cmd) 1120 { 1121 return 0; 1122 } 1123 1124 static inline int security_sem_semop(struct sem_array *sma, 1125 struct sembuf *sops, unsigned nsops, 1126 int alter) 1127 { 1128 return 0; 1129 } 1130 1131 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1132 { } 1133 1134 static inline int security_getprocattr(struct task_struct *p, char *name, char **value) 1135 { 1136 return -EINVAL; 1137 } 1138 1139 static inline int security_setprocattr(char *name, void *value, size_t size) 1140 { 1141 return -EINVAL; 1142 } 1143 1144 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1145 { 1146 return 0; 1147 } 1148 1149 static inline int security_ismaclabel(const char *name) 1150 { 1151 return 0; 1152 } 1153 1154 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1155 { 1156 return -EOPNOTSUPP; 1157 } 1158 1159 static inline int security_secctx_to_secid(const char *secdata, 1160 u32 seclen, 1161 u32 *secid) 1162 { 1163 return -EOPNOTSUPP; 1164 } 1165 1166 static inline void security_release_secctx(char *secdata, u32 seclen) 1167 { 1168 } 1169 1170 static inline void security_inode_invalidate_secctx(struct inode *inode) 1171 { 1172 } 1173 1174 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1175 { 1176 return -EOPNOTSUPP; 1177 } 1178 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1179 { 1180 return -EOPNOTSUPP; 1181 } 1182 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1183 { 1184 return -EOPNOTSUPP; 1185 } 1186 #endif /* CONFIG_SECURITY */ 1187 1188 #ifdef CONFIG_SECURITY_NETWORK 1189 1190 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1191 int security_unix_may_send(struct socket *sock, struct socket *other); 1192 int security_socket_create(int family, int type, int protocol, int kern); 1193 int security_socket_post_create(struct socket *sock, int family, 1194 int type, int protocol, int kern); 1195 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1196 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1197 int security_socket_listen(struct socket *sock, int backlog); 1198 int security_socket_accept(struct socket *sock, struct socket *newsock); 1199 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1200 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1201 int size, int flags); 1202 int security_socket_getsockname(struct socket *sock); 1203 int security_socket_getpeername(struct socket *sock); 1204 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1205 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1206 int security_socket_shutdown(struct socket *sock, int how); 1207 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1208 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1209 int __user *optlen, unsigned len); 1210 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1211 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1212 void security_sk_free(struct sock *sk); 1213 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1214 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1215 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1216 void security_sock_graft(struct sock*sk, struct socket *parent); 1217 int security_inet_conn_request(struct sock *sk, 1218 struct sk_buff *skb, struct request_sock *req); 1219 void security_inet_csk_clone(struct sock *newsk, 1220 const struct request_sock *req); 1221 void security_inet_conn_established(struct sock *sk, 1222 struct sk_buff *skb); 1223 int security_secmark_relabel_packet(u32 secid); 1224 void security_secmark_refcount_inc(void); 1225 void security_secmark_refcount_dec(void); 1226 int security_tun_dev_alloc_security(void **security); 1227 void security_tun_dev_free_security(void *security); 1228 int security_tun_dev_create(void); 1229 int security_tun_dev_attach_queue(void *security); 1230 int security_tun_dev_attach(struct sock *sk, void *security); 1231 int security_tun_dev_open(void *security); 1232 1233 #else /* CONFIG_SECURITY_NETWORK */ 1234 static inline int security_unix_stream_connect(struct sock *sock, 1235 struct sock *other, 1236 struct sock *newsk) 1237 { 1238 return 0; 1239 } 1240 1241 static inline int security_unix_may_send(struct socket *sock, 1242 struct socket *other) 1243 { 1244 return 0; 1245 } 1246 1247 static inline int security_socket_create(int family, int type, 1248 int protocol, int kern) 1249 { 1250 return 0; 1251 } 1252 1253 static inline int security_socket_post_create(struct socket *sock, 1254 int family, 1255 int type, 1256 int protocol, int kern) 1257 { 1258 return 0; 1259 } 1260 1261 static inline int security_socket_bind(struct socket *sock, 1262 struct sockaddr *address, 1263 int addrlen) 1264 { 1265 return 0; 1266 } 1267 1268 static inline int security_socket_connect(struct socket *sock, 1269 struct sockaddr *address, 1270 int addrlen) 1271 { 1272 return 0; 1273 } 1274 1275 static inline int security_socket_listen(struct socket *sock, int backlog) 1276 { 1277 return 0; 1278 } 1279 1280 static inline int security_socket_accept(struct socket *sock, 1281 struct socket *newsock) 1282 { 1283 return 0; 1284 } 1285 1286 static inline int security_socket_sendmsg(struct socket *sock, 1287 struct msghdr *msg, int size) 1288 { 1289 return 0; 1290 } 1291 1292 static inline int security_socket_recvmsg(struct socket *sock, 1293 struct msghdr *msg, int size, 1294 int flags) 1295 { 1296 return 0; 1297 } 1298 1299 static inline int security_socket_getsockname(struct socket *sock) 1300 { 1301 return 0; 1302 } 1303 1304 static inline int security_socket_getpeername(struct socket *sock) 1305 { 1306 return 0; 1307 } 1308 1309 static inline int security_socket_getsockopt(struct socket *sock, 1310 int level, int optname) 1311 { 1312 return 0; 1313 } 1314 1315 static inline int security_socket_setsockopt(struct socket *sock, 1316 int level, int optname) 1317 { 1318 return 0; 1319 } 1320 1321 static inline int security_socket_shutdown(struct socket *sock, int how) 1322 { 1323 return 0; 1324 } 1325 static inline int security_sock_rcv_skb(struct sock *sk, 1326 struct sk_buff *skb) 1327 { 1328 return 0; 1329 } 1330 1331 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1332 int __user *optlen, unsigned len) 1333 { 1334 return -ENOPROTOOPT; 1335 } 1336 1337 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1338 { 1339 return -ENOPROTOOPT; 1340 } 1341 1342 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1343 { 1344 return 0; 1345 } 1346 1347 static inline void security_sk_free(struct sock *sk) 1348 { 1349 } 1350 1351 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1352 { 1353 } 1354 1355 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1356 { 1357 } 1358 1359 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1360 { 1361 } 1362 1363 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1364 { 1365 } 1366 1367 static inline int security_inet_conn_request(struct sock *sk, 1368 struct sk_buff *skb, struct request_sock *req) 1369 { 1370 return 0; 1371 } 1372 1373 static inline void security_inet_csk_clone(struct sock *newsk, 1374 const struct request_sock *req) 1375 { 1376 } 1377 1378 static inline void security_inet_conn_established(struct sock *sk, 1379 struct sk_buff *skb) 1380 { 1381 } 1382 1383 static inline int security_secmark_relabel_packet(u32 secid) 1384 { 1385 return 0; 1386 } 1387 1388 static inline void security_secmark_refcount_inc(void) 1389 { 1390 } 1391 1392 static inline void security_secmark_refcount_dec(void) 1393 { 1394 } 1395 1396 static inline int security_tun_dev_alloc_security(void **security) 1397 { 1398 return 0; 1399 } 1400 1401 static inline void security_tun_dev_free_security(void *security) 1402 { 1403 } 1404 1405 static inline int security_tun_dev_create(void) 1406 { 1407 return 0; 1408 } 1409 1410 static inline int security_tun_dev_attach_queue(void *security) 1411 { 1412 return 0; 1413 } 1414 1415 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1416 { 1417 return 0; 1418 } 1419 1420 static inline int security_tun_dev_open(void *security) 1421 { 1422 return 0; 1423 } 1424 #endif /* CONFIG_SECURITY_NETWORK */ 1425 1426 #ifdef CONFIG_SECURITY_INFINIBAND 1427 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1428 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1429 int security_ib_alloc_security(void **sec); 1430 void security_ib_free_security(void *sec); 1431 #else /* CONFIG_SECURITY_INFINIBAND */ 1432 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1433 { 1434 return 0; 1435 } 1436 1437 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1438 { 1439 return 0; 1440 } 1441 1442 static inline int security_ib_alloc_security(void **sec) 1443 { 1444 return 0; 1445 } 1446 1447 static inline void security_ib_free_security(void *sec) 1448 { 1449 } 1450 #endif /* CONFIG_SECURITY_INFINIBAND */ 1451 1452 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1453 1454 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1455 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1456 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1457 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1458 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1459 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1460 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1461 struct xfrm_sec_ctx *polsec, u32 secid); 1462 int security_xfrm_state_delete(struct xfrm_state *x); 1463 void security_xfrm_state_free(struct xfrm_state *x); 1464 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1465 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1466 struct xfrm_policy *xp, 1467 const struct flowi *fl); 1468 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1469 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1470 1471 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1472 1473 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1474 struct xfrm_user_sec_ctx *sec_ctx, 1475 gfp_t gfp) 1476 { 1477 return 0; 1478 } 1479 1480 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1481 { 1482 return 0; 1483 } 1484 1485 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1486 { 1487 } 1488 1489 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1490 { 1491 return 0; 1492 } 1493 1494 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1495 struct xfrm_user_sec_ctx *sec_ctx) 1496 { 1497 return 0; 1498 } 1499 1500 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1501 struct xfrm_sec_ctx *polsec, u32 secid) 1502 { 1503 return 0; 1504 } 1505 1506 static inline void security_xfrm_state_free(struct xfrm_state *x) 1507 { 1508 } 1509 1510 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1511 { 1512 return 0; 1513 } 1514 1515 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1516 { 1517 return 0; 1518 } 1519 1520 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1521 struct xfrm_policy *xp, const struct flowi *fl) 1522 { 1523 return 1; 1524 } 1525 1526 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1527 { 1528 return 0; 1529 } 1530 1531 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1532 { 1533 } 1534 1535 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1536 1537 #ifdef CONFIG_SECURITY_PATH 1538 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1539 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1540 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1541 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1542 unsigned int dev); 1543 int security_path_truncate(const struct path *path); 1544 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1545 const char *old_name); 1546 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1547 struct dentry *new_dentry); 1548 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1549 const struct path *new_dir, struct dentry *new_dentry, 1550 unsigned int flags); 1551 int security_path_chmod(const struct path *path, umode_t mode); 1552 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1553 int security_path_chroot(const struct path *path); 1554 #else /* CONFIG_SECURITY_PATH */ 1555 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1556 { 1557 return 0; 1558 } 1559 1560 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1561 umode_t mode) 1562 { 1563 return 0; 1564 } 1565 1566 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1567 { 1568 return 0; 1569 } 1570 1571 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1572 umode_t mode, unsigned int dev) 1573 { 1574 return 0; 1575 } 1576 1577 static inline int security_path_truncate(const struct path *path) 1578 { 1579 return 0; 1580 } 1581 1582 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1583 const char *old_name) 1584 { 1585 return 0; 1586 } 1587 1588 static inline int security_path_link(struct dentry *old_dentry, 1589 const struct path *new_dir, 1590 struct dentry *new_dentry) 1591 { 1592 return 0; 1593 } 1594 1595 static inline int security_path_rename(const struct path *old_dir, 1596 struct dentry *old_dentry, 1597 const struct path *new_dir, 1598 struct dentry *new_dentry, 1599 unsigned int flags) 1600 { 1601 return 0; 1602 } 1603 1604 static inline int security_path_chmod(const struct path *path, umode_t mode) 1605 { 1606 return 0; 1607 } 1608 1609 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1610 { 1611 return 0; 1612 } 1613 1614 static inline int security_path_chroot(const struct path *path) 1615 { 1616 return 0; 1617 } 1618 #endif /* CONFIG_SECURITY_PATH */ 1619 1620 #ifdef CONFIG_KEYS 1621 #ifdef CONFIG_SECURITY 1622 1623 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1624 void security_key_free(struct key *key); 1625 int security_key_permission(key_ref_t key_ref, 1626 const struct cred *cred, unsigned perm); 1627 int security_key_getsecurity(struct key *key, char **_buffer); 1628 1629 #else 1630 1631 static inline int security_key_alloc(struct key *key, 1632 const struct cred *cred, 1633 unsigned long flags) 1634 { 1635 return 0; 1636 } 1637 1638 static inline void security_key_free(struct key *key) 1639 { 1640 } 1641 1642 static inline int security_key_permission(key_ref_t key_ref, 1643 const struct cred *cred, 1644 unsigned perm) 1645 { 1646 return 0; 1647 } 1648 1649 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1650 { 1651 *_buffer = NULL; 1652 return 0; 1653 } 1654 1655 #endif 1656 #endif /* CONFIG_KEYS */ 1657 1658 #ifdef CONFIG_AUDIT 1659 #ifdef CONFIG_SECURITY 1660 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1661 int security_audit_rule_known(struct audit_krule *krule); 1662 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1663 struct audit_context *actx); 1664 void security_audit_rule_free(void *lsmrule); 1665 1666 #else 1667 1668 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1669 void **lsmrule) 1670 { 1671 return 0; 1672 } 1673 1674 static inline int security_audit_rule_known(struct audit_krule *krule) 1675 { 1676 return 0; 1677 } 1678 1679 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1680 void *lsmrule, struct audit_context *actx) 1681 { 1682 return 0; 1683 } 1684 1685 static inline void security_audit_rule_free(void *lsmrule) 1686 { } 1687 1688 #endif /* CONFIG_SECURITY */ 1689 #endif /* CONFIG_AUDIT */ 1690 1691 #ifdef CONFIG_SECURITYFS 1692 1693 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1694 struct dentry *parent, void *data, 1695 const struct file_operations *fops); 1696 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1697 struct dentry *securityfs_create_symlink(const char *name, 1698 struct dentry *parent, 1699 const char *target, 1700 const struct inode_operations *iops); 1701 extern void securityfs_remove(struct dentry *dentry); 1702 1703 #else /* CONFIG_SECURITYFS */ 1704 1705 static inline struct dentry *securityfs_create_dir(const char *name, 1706 struct dentry *parent) 1707 { 1708 return ERR_PTR(-ENODEV); 1709 } 1710 1711 static inline struct dentry *securityfs_create_file(const char *name, 1712 umode_t mode, 1713 struct dentry *parent, 1714 void *data, 1715 const struct file_operations *fops) 1716 { 1717 return ERR_PTR(-ENODEV); 1718 } 1719 1720 static inline struct dentry *securityfs_create_symlink(const char *name, 1721 struct dentry *parent, 1722 const char *target, 1723 const struct inode_operations *iops) 1724 { 1725 return ERR_PTR(-ENODEV); 1726 } 1727 1728 static inline void securityfs_remove(struct dentry *dentry) 1729 {} 1730 1731 #endif 1732 1733 #ifdef CONFIG_BPF_SYSCALL 1734 union bpf_attr; 1735 struct bpf_map; 1736 struct bpf_prog; 1737 struct bpf_prog_aux; 1738 #ifdef CONFIG_SECURITY 1739 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1740 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1741 extern int security_bpf_prog(struct bpf_prog *prog); 1742 extern int security_bpf_map_alloc(struct bpf_map *map); 1743 extern void security_bpf_map_free(struct bpf_map *map); 1744 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1745 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1746 #else 1747 static inline int security_bpf(int cmd, union bpf_attr *attr, 1748 unsigned int size) 1749 { 1750 return 0; 1751 } 1752 1753 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1754 { 1755 return 0; 1756 } 1757 1758 static inline int security_bpf_prog(struct bpf_prog *prog) 1759 { 1760 return 0; 1761 } 1762 1763 static inline int security_bpf_map_alloc(struct bpf_map *map) 1764 { 1765 return 0; 1766 } 1767 1768 static inline void security_bpf_map_free(struct bpf_map *map) 1769 { } 1770 1771 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1772 { 1773 return 0; 1774 } 1775 1776 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1777 { } 1778 #endif /* CONFIG_SECURITY */ 1779 #endif /* CONFIG_BPF_SYSCALL */ 1780 1781 #ifdef CONFIG_SECURITY 1782 1783 static inline char *alloc_secdata(void) 1784 { 1785 return (char *)get_zeroed_page(GFP_KERNEL); 1786 } 1787 1788 static inline void free_secdata(void *secdata) 1789 { 1790 free_page((unsigned long)secdata); 1791 } 1792 1793 #else 1794 1795 static inline char *alloc_secdata(void) 1796 { 1797 return (char *)1; 1798 } 1799 1800 static inline void free_secdata(void *secdata) 1801 { } 1802 #endif /* CONFIG_SECURITY */ 1803 1804 #endif /* ! __LINUX_SECURITY_H */ 1805 1806