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 #include <linux/bpf.h> 35 36 struct linux_binprm; 37 struct cred; 38 struct rlimit; 39 struct siginfo; 40 struct sem_array; 41 struct sembuf; 42 struct kern_ipc_perm; 43 struct audit_context; 44 struct super_block; 45 struct inode; 46 struct dentry; 47 struct file; 48 struct vfsmount; 49 struct path; 50 struct qstr; 51 struct iattr; 52 struct fown_struct; 53 struct file_operations; 54 struct shmid_kernel; 55 struct msg_msg; 56 struct msg_queue; 57 struct xattr; 58 struct xfrm_sec_ctx; 59 struct mm_struct; 60 61 /* If capable should audit the security request */ 62 #define SECURITY_CAP_NOAUDIT 0 63 #define SECURITY_CAP_AUDIT 1 64 65 /* LSM Agnostic defines for sb_set_mnt_opts */ 66 #define SECURITY_LSM_NATIVE_LABELS 1 67 68 struct ctl_table; 69 struct audit_krule; 70 struct user_namespace; 71 struct timezone; 72 73 enum lsm_event { 74 LSM_POLICY_CHANGE, 75 }; 76 77 /* These functions are in security/commoncap.c */ 78 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 79 int cap, int audit); 80 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 81 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 82 extern int cap_ptrace_traceme(struct task_struct *parent); 83 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 84 extern int cap_capset(struct cred *new, const struct cred *old, 85 const kernel_cap_t *effective, 86 const kernel_cap_t *inheritable, 87 const kernel_cap_t *permitted); 88 extern int cap_bprm_set_creds(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_inode_getsecurity(struct inode *inode, const char *name, 95 void **buffer, bool alloc); 96 extern int cap_mmap_addr(unsigned long addr); 97 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 98 unsigned long prot, unsigned long flags); 99 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 100 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 101 unsigned long arg4, unsigned long arg5); 102 extern int cap_task_setscheduler(struct task_struct *p); 103 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 104 extern int cap_task_setnice(struct task_struct *p, int nice); 105 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 106 107 struct msghdr; 108 struct sk_buff; 109 struct sock; 110 struct sockaddr; 111 struct socket; 112 struct flowi; 113 struct dst_entry; 114 struct xfrm_selector; 115 struct xfrm_policy; 116 struct xfrm_state; 117 struct xfrm_user_sec_ctx; 118 struct seq_file; 119 120 #ifdef CONFIG_MMU 121 extern unsigned long mmap_min_addr; 122 extern unsigned long dac_mmap_min_addr; 123 #else 124 #define mmap_min_addr 0UL 125 #define dac_mmap_min_addr 0UL 126 #endif 127 128 /* 129 * Values used in the task_security_ops calls 130 */ 131 /* setuid or setgid, id0 == uid or gid */ 132 #define LSM_SETID_ID 1 133 134 /* setreuid or setregid, id0 == real, id1 == eff */ 135 #define LSM_SETID_RE 2 136 137 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 138 #define LSM_SETID_RES 4 139 140 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 141 #define LSM_SETID_FS 8 142 143 /* Flags for security_task_prlimit(). */ 144 #define LSM_PRLIMIT_READ 1 145 #define LSM_PRLIMIT_WRITE 2 146 147 /* forward declares to avoid warnings */ 148 struct sched_param; 149 struct request_sock; 150 151 /* bprm->unsafe reasons */ 152 #define LSM_UNSAFE_SHARE 1 153 #define LSM_UNSAFE_PTRACE 2 154 #define LSM_UNSAFE_NO_NEW_PRIVS 4 155 156 #ifdef CONFIG_MMU 157 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 158 void __user *buffer, size_t *lenp, loff_t *ppos); 159 #endif 160 161 /* security_inode_init_security callback function to write xattrs */ 162 typedef int (*initxattrs) (struct inode *inode, 163 const struct xattr *xattr_array, void *fs_data); 164 165 #ifdef CONFIG_SECURITY 166 167 struct security_mnt_opts { 168 char **mnt_opts; 169 int *mnt_opts_flags; 170 int num_mnt_opts; 171 }; 172 173 int call_lsm_notifier(enum lsm_event event, void *data); 174 int register_lsm_notifier(struct notifier_block *nb); 175 int unregister_lsm_notifier(struct notifier_block *nb); 176 177 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 178 { 179 opts->mnt_opts = NULL; 180 opts->mnt_opts_flags = NULL; 181 opts->num_mnt_opts = 0; 182 } 183 184 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 185 { 186 int i; 187 if (opts->mnt_opts) 188 for (i = 0; i < opts->num_mnt_opts; i++) 189 kfree(opts->mnt_opts[i]); 190 kfree(opts->mnt_opts); 191 opts->mnt_opts = NULL; 192 kfree(opts->mnt_opts_flags); 193 opts->mnt_opts_flags = NULL; 194 opts->num_mnt_opts = 0; 195 } 196 197 /* prototypes */ 198 extern int security_init(void); 199 200 /* Security operations */ 201 int security_binder_set_context_mgr(struct task_struct *mgr); 202 int security_binder_transaction(struct task_struct *from, 203 struct task_struct *to); 204 int security_binder_transfer_binder(struct task_struct *from, 205 struct task_struct *to); 206 int security_binder_transfer_file(struct task_struct *from, 207 struct task_struct *to, struct file *file); 208 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 209 int security_ptrace_traceme(struct task_struct *parent); 210 int security_capget(struct task_struct *target, 211 kernel_cap_t *effective, 212 kernel_cap_t *inheritable, 213 kernel_cap_t *permitted); 214 int security_capset(struct cred *new, const struct cred *old, 215 const kernel_cap_t *effective, 216 const kernel_cap_t *inheritable, 217 const kernel_cap_t *permitted); 218 int security_capable(const struct cred *cred, struct user_namespace *ns, 219 int cap); 220 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 221 int cap); 222 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 223 int security_quota_on(struct dentry *dentry); 224 int security_syslog(int type); 225 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 226 static inline int security_settime(const struct timespec *ts, const struct timezone *tz) 227 { 228 struct timespec64 ts64 = timespec_to_timespec64(*ts); 229 230 return security_settime64(&ts64, tz); 231 } 232 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 233 int security_bprm_set_creds(struct linux_binprm *bprm); 234 int security_bprm_check(struct linux_binprm *bprm); 235 void security_bprm_committing_creds(struct linux_binprm *bprm); 236 void security_bprm_committed_creds(struct linux_binprm *bprm); 237 int security_sb_alloc(struct super_block *sb); 238 void security_sb_free(struct super_block *sb); 239 int security_sb_copy_data(char *orig, char *copy); 240 int security_sb_remount(struct super_block *sb, void *data); 241 int security_sb_kern_mount(struct super_block *sb, int flags, void *data); 242 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 243 int security_sb_statfs(struct dentry *dentry); 244 int security_sb_mount(const char *dev_name, const struct path *path, 245 const char *type, unsigned long flags, void *data); 246 int security_sb_umount(struct vfsmount *mnt, int flags); 247 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 248 int security_sb_set_mnt_opts(struct super_block *sb, 249 struct security_mnt_opts *opts, 250 unsigned long kern_flags, 251 unsigned long *set_kern_flags); 252 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 253 struct super_block *newsb, 254 unsigned long kern_flags, 255 unsigned long *set_kern_flags); 256 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); 257 int security_dentry_init_security(struct dentry *dentry, int mode, 258 const struct qstr *name, void **ctx, 259 u32 *ctxlen); 260 int security_dentry_create_files_as(struct dentry *dentry, int mode, 261 struct qstr *name, 262 const struct cred *old, 263 struct cred *new); 264 265 int security_inode_alloc(struct inode *inode); 266 void security_inode_free(struct inode *inode); 267 int security_inode_init_security(struct inode *inode, struct inode *dir, 268 const struct qstr *qstr, 269 initxattrs initxattrs, void *fs_data); 270 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 271 const struct qstr *qstr, const char **name, 272 void **value, size_t *len); 273 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 274 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 275 struct dentry *new_dentry); 276 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 277 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 278 const char *old_name); 279 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 280 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 281 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 282 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 283 struct inode *new_dir, struct dentry *new_dentry, 284 unsigned int flags); 285 int security_inode_readlink(struct dentry *dentry); 286 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 287 bool rcu); 288 int security_inode_permission(struct inode *inode, int mask); 289 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 290 int security_inode_getattr(const struct path *path); 291 int security_inode_setxattr(struct dentry *dentry, const char *name, 292 const void *value, size_t size, int flags); 293 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 294 const void *value, size_t size, int flags); 295 int security_inode_getxattr(struct dentry *dentry, const char *name); 296 int security_inode_listxattr(struct dentry *dentry); 297 int security_inode_removexattr(struct dentry *dentry, const char *name); 298 int security_inode_need_killpriv(struct dentry *dentry); 299 int security_inode_killpriv(struct dentry *dentry); 300 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 301 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 302 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 303 void security_inode_getsecid(struct inode *inode, u32 *secid); 304 int security_inode_copy_up(struct dentry *src, struct cred **new); 305 int security_inode_copy_up_xattr(const char *name); 306 int security_file_permission(struct file *file, int mask); 307 int security_file_alloc(struct file *file); 308 void security_file_free(struct file *file); 309 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 310 int security_mmap_file(struct file *file, unsigned long prot, 311 unsigned long flags); 312 int security_mmap_addr(unsigned long addr); 313 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 314 unsigned long prot); 315 int security_file_lock(struct file *file, unsigned int cmd); 316 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 317 void security_file_set_fowner(struct file *file); 318 int security_file_send_sigiotask(struct task_struct *tsk, 319 struct fown_struct *fown, int sig); 320 int security_file_receive(struct file *file); 321 int security_file_open(struct file *file, const struct cred *cred); 322 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 323 void security_task_free(struct task_struct *task); 324 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 325 void security_cred_free(struct cred *cred); 326 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 327 void security_transfer_creds(struct cred *new, const struct cred *old); 328 int security_kernel_act_as(struct cred *new, u32 secid); 329 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 330 int security_kernel_module_request(char *kmod_name); 331 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 332 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 333 enum kernel_read_file_id id); 334 int security_task_fix_setuid(struct cred *new, const struct cred *old, 335 int flags); 336 int security_task_setpgid(struct task_struct *p, pid_t pgid); 337 int security_task_getpgid(struct task_struct *p); 338 int security_task_getsid(struct task_struct *p); 339 void security_task_getsecid(struct task_struct *p, u32 *secid); 340 int security_task_setnice(struct task_struct *p, int nice); 341 int security_task_setioprio(struct task_struct *p, int ioprio); 342 int security_task_getioprio(struct task_struct *p); 343 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 344 unsigned int flags); 345 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 346 struct rlimit *new_rlim); 347 int security_task_setscheduler(struct task_struct *p); 348 int security_task_getscheduler(struct task_struct *p); 349 int security_task_movememory(struct task_struct *p); 350 int security_task_kill(struct task_struct *p, struct siginfo *info, 351 int sig, u32 secid); 352 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 353 unsigned long arg4, unsigned long arg5); 354 void security_task_to_inode(struct task_struct *p, struct inode *inode); 355 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 356 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 357 int security_msg_msg_alloc(struct msg_msg *msg); 358 void security_msg_msg_free(struct msg_msg *msg); 359 int security_msg_queue_alloc(struct msg_queue *msq); 360 void security_msg_queue_free(struct msg_queue *msq); 361 int security_msg_queue_associate(struct msg_queue *msq, int msqflg); 362 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd); 363 int security_msg_queue_msgsnd(struct msg_queue *msq, 364 struct msg_msg *msg, int msqflg); 365 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 366 struct task_struct *target, long type, int mode); 367 int security_shm_alloc(struct shmid_kernel *shp); 368 void security_shm_free(struct shmid_kernel *shp); 369 int security_shm_associate(struct shmid_kernel *shp, int shmflg); 370 int security_shm_shmctl(struct shmid_kernel *shp, int cmd); 371 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg); 372 int security_sem_alloc(struct sem_array *sma); 373 void security_sem_free(struct sem_array *sma); 374 int security_sem_associate(struct sem_array *sma, int semflg); 375 int security_sem_semctl(struct sem_array *sma, int cmd); 376 int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 377 unsigned nsops, int alter); 378 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 379 int security_getprocattr(struct task_struct *p, char *name, char **value); 380 int security_setprocattr(const char *name, void *value, size_t size); 381 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 382 int security_ismaclabel(const char *name); 383 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 384 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 385 void security_release_secctx(char *secdata, u32 seclen); 386 387 void security_inode_invalidate_secctx(struct inode *inode); 388 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 389 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 390 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 391 #else /* CONFIG_SECURITY */ 392 struct security_mnt_opts { 393 }; 394 395 static inline int call_lsm_notifier(enum lsm_event event, void *data) 396 { 397 return 0; 398 } 399 400 static inline int register_lsm_notifier(struct notifier_block *nb) 401 { 402 return 0; 403 } 404 405 static inline int unregister_lsm_notifier(struct notifier_block *nb) 406 { 407 return 0; 408 } 409 410 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 411 { 412 } 413 414 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 415 { 416 } 417 418 /* 419 * This is the default capabilities functionality. Most of these functions 420 * are just stubbed out, but a few must call the proper capable code. 421 */ 422 423 static inline int security_init(void) 424 { 425 return 0; 426 } 427 428 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 429 { 430 return 0; 431 } 432 433 static inline int security_binder_transaction(struct task_struct *from, 434 struct task_struct *to) 435 { 436 return 0; 437 } 438 439 static inline int security_binder_transfer_binder(struct task_struct *from, 440 struct task_struct *to) 441 { 442 return 0; 443 } 444 445 static inline int security_binder_transfer_file(struct task_struct *from, 446 struct task_struct *to, 447 struct file *file) 448 { 449 return 0; 450 } 451 452 static inline int security_ptrace_access_check(struct task_struct *child, 453 unsigned int mode) 454 { 455 return cap_ptrace_access_check(child, mode); 456 } 457 458 static inline int security_ptrace_traceme(struct task_struct *parent) 459 { 460 return cap_ptrace_traceme(parent); 461 } 462 463 static inline int security_capget(struct task_struct *target, 464 kernel_cap_t *effective, 465 kernel_cap_t *inheritable, 466 kernel_cap_t *permitted) 467 { 468 return cap_capget(target, effective, inheritable, permitted); 469 } 470 471 static inline int security_capset(struct cred *new, 472 const struct cred *old, 473 const kernel_cap_t *effective, 474 const kernel_cap_t *inheritable, 475 const kernel_cap_t *permitted) 476 { 477 return cap_capset(new, old, effective, inheritable, permitted); 478 } 479 480 static inline int security_capable(const struct cred *cred, 481 struct user_namespace *ns, int cap) 482 { 483 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT); 484 } 485 486 static inline int security_capable_noaudit(const struct cred *cred, 487 struct user_namespace *ns, int cap) { 488 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 489 } 490 491 static inline int security_quotactl(int cmds, int type, int id, 492 struct super_block *sb) 493 { 494 return 0; 495 } 496 497 static inline int security_quota_on(struct dentry *dentry) 498 { 499 return 0; 500 } 501 502 static inline int security_syslog(int type) 503 { 504 return 0; 505 } 506 507 static inline int security_settime64(const struct timespec64 *ts, 508 const struct timezone *tz) 509 { 510 return cap_settime(ts, tz); 511 } 512 513 static inline int security_settime(const struct timespec *ts, 514 const struct timezone *tz) 515 { 516 struct timespec64 ts64 = timespec_to_timespec64(*ts); 517 518 return cap_settime(&ts64, tz); 519 } 520 521 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 522 { 523 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 524 } 525 526 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 527 { 528 return cap_bprm_set_creds(bprm); 529 } 530 531 static inline int security_bprm_check(struct linux_binprm *bprm) 532 { 533 return 0; 534 } 535 536 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 537 { 538 } 539 540 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 541 { 542 } 543 544 static inline int security_sb_alloc(struct super_block *sb) 545 { 546 return 0; 547 } 548 549 static inline void security_sb_free(struct super_block *sb) 550 { } 551 552 static inline int security_sb_copy_data(char *orig, char *copy) 553 { 554 return 0; 555 } 556 557 static inline int security_sb_remount(struct super_block *sb, void *data) 558 { 559 return 0; 560 } 561 562 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 563 { 564 return 0; 565 } 566 567 static inline int security_sb_show_options(struct seq_file *m, 568 struct super_block *sb) 569 { 570 return 0; 571 } 572 573 static inline int security_sb_statfs(struct dentry *dentry) 574 { 575 return 0; 576 } 577 578 static inline int security_sb_mount(const char *dev_name, const struct path *path, 579 const char *type, unsigned long flags, 580 void *data) 581 { 582 return 0; 583 } 584 585 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 586 { 587 return 0; 588 } 589 590 static inline int security_sb_pivotroot(const struct path *old_path, 591 const struct path *new_path) 592 { 593 return 0; 594 } 595 596 static inline int security_sb_set_mnt_opts(struct super_block *sb, 597 struct security_mnt_opts *opts, 598 unsigned long kern_flags, 599 unsigned long *set_kern_flags) 600 { 601 return 0; 602 } 603 604 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 605 struct super_block *newsb, 606 unsigned long kern_flags, 607 unsigned long *set_kern_flags) 608 { 609 return 0; 610 } 611 612 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 613 { 614 return 0; 615 } 616 617 static inline int security_inode_alloc(struct inode *inode) 618 { 619 return 0; 620 } 621 622 static inline void security_inode_free(struct inode *inode) 623 { } 624 625 static inline int security_dentry_init_security(struct dentry *dentry, 626 int mode, 627 const struct qstr *name, 628 void **ctx, 629 u32 *ctxlen) 630 { 631 return -EOPNOTSUPP; 632 } 633 634 static inline int security_dentry_create_files_as(struct dentry *dentry, 635 int mode, struct qstr *name, 636 const struct cred *old, 637 struct cred *new) 638 { 639 return 0; 640 } 641 642 643 static inline int security_inode_init_security(struct inode *inode, 644 struct inode *dir, 645 const struct qstr *qstr, 646 const initxattrs xattrs, 647 void *fs_data) 648 { 649 return 0; 650 } 651 652 static inline int security_old_inode_init_security(struct inode *inode, 653 struct inode *dir, 654 const struct qstr *qstr, 655 const char **name, 656 void **value, size_t *len) 657 { 658 return -EOPNOTSUPP; 659 } 660 661 static inline int security_inode_create(struct inode *dir, 662 struct dentry *dentry, 663 umode_t mode) 664 { 665 return 0; 666 } 667 668 static inline int security_inode_link(struct dentry *old_dentry, 669 struct inode *dir, 670 struct dentry *new_dentry) 671 { 672 return 0; 673 } 674 675 static inline int security_inode_unlink(struct inode *dir, 676 struct dentry *dentry) 677 { 678 return 0; 679 } 680 681 static inline int security_inode_symlink(struct inode *dir, 682 struct dentry *dentry, 683 const char *old_name) 684 { 685 return 0; 686 } 687 688 static inline int security_inode_mkdir(struct inode *dir, 689 struct dentry *dentry, 690 int mode) 691 { 692 return 0; 693 } 694 695 static inline int security_inode_rmdir(struct inode *dir, 696 struct dentry *dentry) 697 { 698 return 0; 699 } 700 701 static inline int security_inode_mknod(struct inode *dir, 702 struct dentry *dentry, 703 int mode, dev_t dev) 704 { 705 return 0; 706 } 707 708 static inline int security_inode_rename(struct inode *old_dir, 709 struct dentry *old_dentry, 710 struct inode *new_dir, 711 struct dentry *new_dentry, 712 unsigned int flags) 713 { 714 return 0; 715 } 716 717 static inline int security_inode_readlink(struct dentry *dentry) 718 { 719 return 0; 720 } 721 722 static inline int security_inode_follow_link(struct dentry *dentry, 723 struct inode *inode, 724 bool rcu) 725 { 726 return 0; 727 } 728 729 static inline int security_inode_permission(struct inode *inode, int mask) 730 { 731 return 0; 732 } 733 734 static inline int security_inode_setattr(struct dentry *dentry, 735 struct iattr *attr) 736 { 737 return 0; 738 } 739 740 static inline int security_inode_getattr(const struct path *path) 741 { 742 return 0; 743 } 744 745 static inline int security_inode_setxattr(struct dentry *dentry, 746 const char *name, const void *value, size_t size, int flags) 747 { 748 return cap_inode_setxattr(dentry, name, value, size, flags); 749 } 750 751 static inline void security_inode_post_setxattr(struct dentry *dentry, 752 const char *name, const void *value, size_t size, int flags) 753 { } 754 755 static inline int security_inode_getxattr(struct dentry *dentry, 756 const char *name) 757 { 758 return 0; 759 } 760 761 static inline int security_inode_listxattr(struct dentry *dentry) 762 { 763 return 0; 764 } 765 766 static inline int security_inode_removexattr(struct dentry *dentry, 767 const char *name) 768 { 769 return cap_inode_removexattr(dentry, name); 770 } 771 772 static inline int security_inode_need_killpriv(struct dentry *dentry) 773 { 774 return cap_inode_need_killpriv(dentry); 775 } 776 777 static inline int security_inode_killpriv(struct dentry *dentry) 778 { 779 return cap_inode_killpriv(dentry); 780 } 781 782 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 783 { 784 return -EOPNOTSUPP; 785 } 786 787 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 788 { 789 return -EOPNOTSUPP; 790 } 791 792 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 793 { 794 return 0; 795 } 796 797 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 798 { 799 *secid = 0; 800 } 801 802 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 803 { 804 return 0; 805 } 806 807 static inline int security_inode_copy_up_xattr(const char *name) 808 { 809 return -EOPNOTSUPP; 810 } 811 812 static inline int security_file_permission(struct file *file, int mask) 813 { 814 return 0; 815 } 816 817 static inline int security_file_alloc(struct file *file) 818 { 819 return 0; 820 } 821 822 static inline void security_file_free(struct file *file) 823 { } 824 825 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 826 unsigned long arg) 827 { 828 return 0; 829 } 830 831 static inline int security_mmap_file(struct file *file, unsigned long prot, 832 unsigned long flags) 833 { 834 return 0; 835 } 836 837 static inline int security_mmap_addr(unsigned long addr) 838 { 839 return cap_mmap_addr(addr); 840 } 841 842 static inline int security_file_mprotect(struct vm_area_struct *vma, 843 unsigned long reqprot, 844 unsigned long prot) 845 { 846 return 0; 847 } 848 849 static inline int security_file_lock(struct file *file, unsigned int cmd) 850 { 851 return 0; 852 } 853 854 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 855 unsigned long arg) 856 { 857 return 0; 858 } 859 860 static inline void security_file_set_fowner(struct file *file) 861 { 862 return; 863 } 864 865 static inline int security_file_send_sigiotask(struct task_struct *tsk, 866 struct fown_struct *fown, 867 int sig) 868 { 869 return 0; 870 } 871 872 static inline int security_file_receive(struct file *file) 873 { 874 return 0; 875 } 876 877 static inline int security_file_open(struct file *file, 878 const struct cred *cred) 879 { 880 return 0; 881 } 882 883 static inline int security_task_alloc(struct task_struct *task, 884 unsigned long clone_flags) 885 { 886 return 0; 887 } 888 889 static inline void security_task_free(struct task_struct *task) 890 { } 891 892 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 893 { 894 return 0; 895 } 896 897 static inline void security_cred_free(struct cred *cred) 898 { } 899 900 static inline int security_prepare_creds(struct cred *new, 901 const struct cred *old, 902 gfp_t gfp) 903 { 904 return 0; 905 } 906 907 static inline void security_transfer_creds(struct cred *new, 908 const struct cred *old) 909 { 910 } 911 912 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 913 { 914 return 0; 915 } 916 917 static inline int security_kernel_create_files_as(struct cred *cred, 918 struct inode *inode) 919 { 920 return 0; 921 } 922 923 static inline int security_kernel_module_request(char *kmod_name) 924 { 925 return 0; 926 } 927 928 static inline int security_kernel_read_file(struct file *file, 929 enum kernel_read_file_id id) 930 { 931 return 0; 932 } 933 934 static inline int security_kernel_post_read_file(struct file *file, 935 char *buf, loff_t size, 936 enum kernel_read_file_id id) 937 { 938 return 0; 939 } 940 941 static inline int security_task_fix_setuid(struct cred *new, 942 const struct cred *old, 943 int flags) 944 { 945 return cap_task_fix_setuid(new, old, flags); 946 } 947 948 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 949 { 950 return 0; 951 } 952 953 static inline int security_task_getpgid(struct task_struct *p) 954 { 955 return 0; 956 } 957 958 static inline int security_task_getsid(struct task_struct *p) 959 { 960 return 0; 961 } 962 963 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 964 { 965 *secid = 0; 966 } 967 968 static inline int security_task_setnice(struct task_struct *p, int nice) 969 { 970 return cap_task_setnice(p, nice); 971 } 972 973 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 974 { 975 return cap_task_setioprio(p, ioprio); 976 } 977 978 static inline int security_task_getioprio(struct task_struct *p) 979 { 980 return 0; 981 } 982 983 static inline int security_task_prlimit(const struct cred *cred, 984 const struct cred *tcred, 985 unsigned int flags) 986 { 987 return 0; 988 } 989 990 static inline int security_task_setrlimit(struct task_struct *p, 991 unsigned int resource, 992 struct rlimit *new_rlim) 993 { 994 return 0; 995 } 996 997 static inline int security_task_setscheduler(struct task_struct *p) 998 { 999 return cap_task_setscheduler(p); 1000 } 1001 1002 static inline int security_task_getscheduler(struct task_struct *p) 1003 { 1004 return 0; 1005 } 1006 1007 static inline int security_task_movememory(struct task_struct *p) 1008 { 1009 return 0; 1010 } 1011 1012 static inline int security_task_kill(struct task_struct *p, 1013 struct siginfo *info, int sig, 1014 u32 secid) 1015 { 1016 return 0; 1017 } 1018 1019 static inline int security_task_prctl(int option, unsigned long arg2, 1020 unsigned long arg3, 1021 unsigned long arg4, 1022 unsigned long arg5) 1023 { 1024 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1025 } 1026 1027 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1028 { } 1029 1030 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1031 short flag) 1032 { 1033 return 0; 1034 } 1035 1036 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1037 { 1038 *secid = 0; 1039 } 1040 1041 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1042 { 1043 return 0; 1044 } 1045 1046 static inline void security_msg_msg_free(struct msg_msg *msg) 1047 { } 1048 1049 static inline int security_msg_queue_alloc(struct msg_queue *msq) 1050 { 1051 return 0; 1052 } 1053 1054 static inline void security_msg_queue_free(struct msg_queue *msq) 1055 { } 1056 1057 static inline int security_msg_queue_associate(struct msg_queue *msq, 1058 int msqflg) 1059 { 1060 return 0; 1061 } 1062 1063 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 1064 { 1065 return 0; 1066 } 1067 1068 static inline int security_msg_queue_msgsnd(struct msg_queue *msq, 1069 struct msg_msg *msg, int msqflg) 1070 { 1071 return 0; 1072 } 1073 1074 static inline int security_msg_queue_msgrcv(struct msg_queue *msq, 1075 struct msg_msg *msg, 1076 struct task_struct *target, 1077 long type, int mode) 1078 { 1079 return 0; 1080 } 1081 1082 static inline int security_shm_alloc(struct shmid_kernel *shp) 1083 { 1084 return 0; 1085 } 1086 1087 static inline void security_shm_free(struct shmid_kernel *shp) 1088 { } 1089 1090 static inline int security_shm_associate(struct shmid_kernel *shp, 1091 int shmflg) 1092 { 1093 return 0; 1094 } 1095 1096 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 1097 { 1098 return 0; 1099 } 1100 1101 static inline int security_shm_shmat(struct shmid_kernel *shp, 1102 char __user *shmaddr, int shmflg) 1103 { 1104 return 0; 1105 } 1106 1107 static inline int security_sem_alloc(struct sem_array *sma) 1108 { 1109 return 0; 1110 } 1111 1112 static inline void security_sem_free(struct sem_array *sma) 1113 { } 1114 1115 static inline int security_sem_associate(struct sem_array *sma, int semflg) 1116 { 1117 return 0; 1118 } 1119 1120 static inline int security_sem_semctl(struct sem_array *sma, int cmd) 1121 { 1122 return 0; 1123 } 1124 1125 static inline int security_sem_semop(struct sem_array *sma, 1126 struct sembuf *sops, unsigned nsops, 1127 int alter) 1128 { 1129 return 0; 1130 } 1131 1132 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1133 { } 1134 1135 static inline int security_getprocattr(struct task_struct *p, char *name, char **value) 1136 { 1137 return -EINVAL; 1138 } 1139 1140 static inline int security_setprocattr(char *name, void *value, size_t size) 1141 { 1142 return -EINVAL; 1143 } 1144 1145 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1146 { 1147 return 0; 1148 } 1149 1150 static inline int security_ismaclabel(const char *name) 1151 { 1152 return 0; 1153 } 1154 1155 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1156 { 1157 return -EOPNOTSUPP; 1158 } 1159 1160 static inline int security_secctx_to_secid(const char *secdata, 1161 u32 seclen, 1162 u32 *secid) 1163 { 1164 return -EOPNOTSUPP; 1165 } 1166 1167 static inline void security_release_secctx(char *secdata, u32 seclen) 1168 { 1169 } 1170 1171 static inline void security_inode_invalidate_secctx(struct inode *inode) 1172 { 1173 } 1174 1175 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1176 { 1177 return -EOPNOTSUPP; 1178 } 1179 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1180 { 1181 return -EOPNOTSUPP; 1182 } 1183 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1184 { 1185 return -EOPNOTSUPP; 1186 } 1187 #endif /* CONFIG_SECURITY */ 1188 1189 #ifdef CONFIG_SECURITY_NETWORK 1190 1191 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1192 int security_unix_may_send(struct socket *sock, struct socket *other); 1193 int security_socket_create(int family, int type, int protocol, int kern); 1194 int security_socket_post_create(struct socket *sock, int family, 1195 int type, int protocol, int kern); 1196 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1197 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1198 int security_socket_listen(struct socket *sock, int backlog); 1199 int security_socket_accept(struct socket *sock, struct socket *newsock); 1200 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1201 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1202 int size, int flags); 1203 int security_socket_getsockname(struct socket *sock); 1204 int security_socket_getpeername(struct socket *sock); 1205 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1206 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1207 int security_socket_shutdown(struct socket *sock, int how); 1208 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1209 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1210 int __user *optlen, unsigned len); 1211 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1212 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1213 void security_sk_free(struct sock *sk); 1214 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1215 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1216 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1217 void security_sock_graft(struct sock*sk, struct socket *parent); 1218 int security_inet_conn_request(struct sock *sk, 1219 struct sk_buff *skb, struct request_sock *req); 1220 void security_inet_csk_clone(struct sock *newsk, 1221 const struct request_sock *req); 1222 void security_inet_conn_established(struct sock *sk, 1223 struct sk_buff *skb); 1224 int security_secmark_relabel_packet(u32 secid); 1225 void security_secmark_refcount_inc(void); 1226 void security_secmark_refcount_dec(void); 1227 int security_tun_dev_alloc_security(void **security); 1228 void security_tun_dev_free_security(void *security); 1229 int security_tun_dev_create(void); 1230 int security_tun_dev_attach_queue(void *security); 1231 int security_tun_dev_attach(struct sock *sk, void *security); 1232 int security_tun_dev_open(void *security); 1233 1234 #else /* CONFIG_SECURITY_NETWORK */ 1235 static inline int security_unix_stream_connect(struct sock *sock, 1236 struct sock *other, 1237 struct sock *newsk) 1238 { 1239 return 0; 1240 } 1241 1242 static inline int security_unix_may_send(struct socket *sock, 1243 struct socket *other) 1244 { 1245 return 0; 1246 } 1247 1248 static inline int security_socket_create(int family, int type, 1249 int protocol, int kern) 1250 { 1251 return 0; 1252 } 1253 1254 static inline int security_socket_post_create(struct socket *sock, 1255 int family, 1256 int type, 1257 int protocol, int kern) 1258 { 1259 return 0; 1260 } 1261 1262 static inline int security_socket_bind(struct socket *sock, 1263 struct sockaddr *address, 1264 int addrlen) 1265 { 1266 return 0; 1267 } 1268 1269 static inline int security_socket_connect(struct socket *sock, 1270 struct sockaddr *address, 1271 int addrlen) 1272 { 1273 return 0; 1274 } 1275 1276 static inline int security_socket_listen(struct socket *sock, int backlog) 1277 { 1278 return 0; 1279 } 1280 1281 static inline int security_socket_accept(struct socket *sock, 1282 struct socket *newsock) 1283 { 1284 return 0; 1285 } 1286 1287 static inline int security_socket_sendmsg(struct socket *sock, 1288 struct msghdr *msg, int size) 1289 { 1290 return 0; 1291 } 1292 1293 static inline int security_socket_recvmsg(struct socket *sock, 1294 struct msghdr *msg, int size, 1295 int flags) 1296 { 1297 return 0; 1298 } 1299 1300 static inline int security_socket_getsockname(struct socket *sock) 1301 { 1302 return 0; 1303 } 1304 1305 static inline int security_socket_getpeername(struct socket *sock) 1306 { 1307 return 0; 1308 } 1309 1310 static inline int security_socket_getsockopt(struct socket *sock, 1311 int level, int optname) 1312 { 1313 return 0; 1314 } 1315 1316 static inline int security_socket_setsockopt(struct socket *sock, 1317 int level, int optname) 1318 { 1319 return 0; 1320 } 1321 1322 static inline int security_socket_shutdown(struct socket *sock, int how) 1323 { 1324 return 0; 1325 } 1326 static inline int security_sock_rcv_skb(struct sock *sk, 1327 struct sk_buff *skb) 1328 { 1329 return 0; 1330 } 1331 1332 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1333 int __user *optlen, unsigned len) 1334 { 1335 return -ENOPROTOOPT; 1336 } 1337 1338 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1339 { 1340 return -ENOPROTOOPT; 1341 } 1342 1343 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1344 { 1345 return 0; 1346 } 1347 1348 static inline void security_sk_free(struct sock *sk) 1349 { 1350 } 1351 1352 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1353 { 1354 } 1355 1356 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1357 { 1358 } 1359 1360 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1361 { 1362 } 1363 1364 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1365 { 1366 } 1367 1368 static inline int security_inet_conn_request(struct sock *sk, 1369 struct sk_buff *skb, struct request_sock *req) 1370 { 1371 return 0; 1372 } 1373 1374 static inline void security_inet_csk_clone(struct sock *newsk, 1375 const struct request_sock *req) 1376 { 1377 } 1378 1379 static inline void security_inet_conn_established(struct sock *sk, 1380 struct sk_buff *skb) 1381 { 1382 } 1383 1384 static inline int security_secmark_relabel_packet(u32 secid) 1385 { 1386 return 0; 1387 } 1388 1389 static inline void security_secmark_refcount_inc(void) 1390 { 1391 } 1392 1393 static inline void security_secmark_refcount_dec(void) 1394 { 1395 } 1396 1397 static inline int security_tun_dev_alloc_security(void **security) 1398 { 1399 return 0; 1400 } 1401 1402 static inline void security_tun_dev_free_security(void *security) 1403 { 1404 } 1405 1406 static inline int security_tun_dev_create(void) 1407 { 1408 return 0; 1409 } 1410 1411 static inline int security_tun_dev_attach_queue(void *security) 1412 { 1413 return 0; 1414 } 1415 1416 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1417 { 1418 return 0; 1419 } 1420 1421 static inline int security_tun_dev_open(void *security) 1422 { 1423 return 0; 1424 } 1425 #endif /* CONFIG_SECURITY_NETWORK */ 1426 1427 #ifdef CONFIG_SECURITY_INFINIBAND 1428 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1429 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1430 int security_ib_alloc_security(void **sec); 1431 void security_ib_free_security(void *sec); 1432 #else /* CONFIG_SECURITY_INFINIBAND */ 1433 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1434 { 1435 return 0; 1436 } 1437 1438 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1439 { 1440 return 0; 1441 } 1442 1443 static inline int security_ib_alloc_security(void **sec) 1444 { 1445 return 0; 1446 } 1447 1448 static inline void security_ib_free_security(void *sec) 1449 { 1450 } 1451 #endif /* CONFIG_SECURITY_INFINIBAND */ 1452 1453 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1454 1455 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1456 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1457 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1458 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1459 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1460 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1461 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1462 struct xfrm_sec_ctx *polsec, u32 secid); 1463 int security_xfrm_state_delete(struct xfrm_state *x); 1464 void security_xfrm_state_free(struct xfrm_state *x); 1465 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1466 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1467 struct xfrm_policy *xp, 1468 const struct flowi *fl); 1469 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1470 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1471 1472 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1473 1474 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1475 struct xfrm_user_sec_ctx *sec_ctx, 1476 gfp_t gfp) 1477 { 1478 return 0; 1479 } 1480 1481 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1482 { 1483 return 0; 1484 } 1485 1486 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1487 { 1488 } 1489 1490 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1491 { 1492 return 0; 1493 } 1494 1495 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1496 struct xfrm_user_sec_ctx *sec_ctx) 1497 { 1498 return 0; 1499 } 1500 1501 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1502 struct xfrm_sec_ctx *polsec, u32 secid) 1503 { 1504 return 0; 1505 } 1506 1507 static inline void security_xfrm_state_free(struct xfrm_state *x) 1508 { 1509 } 1510 1511 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1512 { 1513 return 0; 1514 } 1515 1516 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1517 { 1518 return 0; 1519 } 1520 1521 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1522 struct xfrm_policy *xp, const struct flowi *fl) 1523 { 1524 return 1; 1525 } 1526 1527 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1528 { 1529 return 0; 1530 } 1531 1532 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1533 { 1534 } 1535 1536 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1537 1538 #ifdef CONFIG_SECURITY_PATH 1539 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1540 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1541 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1542 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1543 unsigned int dev); 1544 int security_path_truncate(const struct path *path); 1545 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1546 const char *old_name); 1547 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1548 struct dentry *new_dentry); 1549 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1550 const struct path *new_dir, struct dentry *new_dentry, 1551 unsigned int flags); 1552 int security_path_chmod(const struct path *path, umode_t mode); 1553 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1554 int security_path_chroot(const struct path *path); 1555 #else /* CONFIG_SECURITY_PATH */ 1556 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1557 { 1558 return 0; 1559 } 1560 1561 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1562 umode_t mode) 1563 { 1564 return 0; 1565 } 1566 1567 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1568 { 1569 return 0; 1570 } 1571 1572 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1573 umode_t mode, unsigned int dev) 1574 { 1575 return 0; 1576 } 1577 1578 static inline int security_path_truncate(const struct path *path) 1579 { 1580 return 0; 1581 } 1582 1583 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1584 const char *old_name) 1585 { 1586 return 0; 1587 } 1588 1589 static inline int security_path_link(struct dentry *old_dentry, 1590 const struct path *new_dir, 1591 struct dentry *new_dentry) 1592 { 1593 return 0; 1594 } 1595 1596 static inline int security_path_rename(const struct path *old_dir, 1597 struct dentry *old_dentry, 1598 const struct path *new_dir, 1599 struct dentry *new_dentry, 1600 unsigned int flags) 1601 { 1602 return 0; 1603 } 1604 1605 static inline int security_path_chmod(const struct path *path, umode_t mode) 1606 { 1607 return 0; 1608 } 1609 1610 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1611 { 1612 return 0; 1613 } 1614 1615 static inline int security_path_chroot(const struct path *path) 1616 { 1617 return 0; 1618 } 1619 #endif /* CONFIG_SECURITY_PATH */ 1620 1621 #ifdef CONFIG_KEYS 1622 #ifdef CONFIG_SECURITY 1623 1624 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1625 void security_key_free(struct key *key); 1626 int security_key_permission(key_ref_t key_ref, 1627 const struct cred *cred, unsigned perm); 1628 int security_key_getsecurity(struct key *key, char **_buffer); 1629 1630 #else 1631 1632 static inline int security_key_alloc(struct key *key, 1633 const struct cred *cred, 1634 unsigned long flags) 1635 { 1636 return 0; 1637 } 1638 1639 static inline void security_key_free(struct key *key) 1640 { 1641 } 1642 1643 static inline int security_key_permission(key_ref_t key_ref, 1644 const struct cred *cred, 1645 unsigned perm) 1646 { 1647 return 0; 1648 } 1649 1650 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1651 { 1652 *_buffer = NULL; 1653 return 0; 1654 } 1655 1656 #endif 1657 #endif /* CONFIG_KEYS */ 1658 1659 #ifdef CONFIG_AUDIT 1660 #ifdef CONFIG_SECURITY 1661 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1662 int security_audit_rule_known(struct audit_krule *krule); 1663 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1664 struct audit_context *actx); 1665 void security_audit_rule_free(void *lsmrule); 1666 1667 #else 1668 1669 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1670 void **lsmrule) 1671 { 1672 return 0; 1673 } 1674 1675 static inline int security_audit_rule_known(struct audit_krule *krule) 1676 { 1677 return 0; 1678 } 1679 1680 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1681 void *lsmrule, struct audit_context *actx) 1682 { 1683 return 0; 1684 } 1685 1686 static inline void security_audit_rule_free(void *lsmrule) 1687 { } 1688 1689 #endif /* CONFIG_SECURITY */ 1690 #endif /* CONFIG_AUDIT */ 1691 1692 #ifdef CONFIG_SECURITYFS 1693 1694 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1695 struct dentry *parent, void *data, 1696 const struct file_operations *fops); 1697 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1698 struct dentry *securityfs_create_symlink(const char *name, 1699 struct dentry *parent, 1700 const char *target, 1701 const struct inode_operations *iops); 1702 extern void securityfs_remove(struct dentry *dentry); 1703 1704 #else /* CONFIG_SECURITYFS */ 1705 1706 static inline struct dentry *securityfs_create_dir(const char *name, 1707 struct dentry *parent) 1708 { 1709 return ERR_PTR(-ENODEV); 1710 } 1711 1712 static inline struct dentry *securityfs_create_file(const char *name, 1713 umode_t mode, 1714 struct dentry *parent, 1715 void *data, 1716 const struct file_operations *fops) 1717 { 1718 return ERR_PTR(-ENODEV); 1719 } 1720 1721 static inline struct dentry *securityfs_create_symlink(const char *name, 1722 struct dentry *parent, 1723 const char *target, 1724 const struct inode_operations *iops) 1725 { 1726 return ERR_PTR(-ENODEV); 1727 } 1728 1729 static inline void securityfs_remove(struct dentry *dentry) 1730 {} 1731 1732 #endif 1733 1734 #ifdef CONFIG_BPF_SYSCALL 1735 #ifdef CONFIG_SECURITY 1736 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1737 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1738 extern int security_bpf_prog(struct bpf_prog *prog); 1739 extern int security_bpf_map_alloc(struct bpf_map *map); 1740 extern void security_bpf_map_free(struct bpf_map *map); 1741 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1742 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1743 #else 1744 static inline int security_bpf(int cmd, union bpf_attr *attr, 1745 unsigned int size) 1746 { 1747 return 0; 1748 } 1749 1750 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1751 { 1752 return 0; 1753 } 1754 1755 static inline int security_bpf_prog(struct bpf_prog *prog) 1756 { 1757 return 0; 1758 } 1759 1760 static inline int security_bpf_map_alloc(struct bpf_map *map) 1761 { 1762 return 0; 1763 } 1764 1765 static inline void security_bpf_map_free(struct bpf_map *map) 1766 { } 1767 1768 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1769 { 1770 return 0; 1771 } 1772 1773 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1774 { } 1775 #endif /* CONFIG_SECURITY */ 1776 #endif /* CONFIG_BPF_SYSCALL */ 1777 1778 #ifdef CONFIG_SECURITY 1779 1780 static inline char *alloc_secdata(void) 1781 { 1782 return (char *)get_zeroed_page(GFP_KERNEL); 1783 } 1784 1785 static inline void free_secdata(void *secdata) 1786 { 1787 free_page((unsigned long)secdata); 1788 } 1789 1790 #else 1791 1792 static inline char *alloc_secdata(void) 1793 { 1794 return (char *)1; 1795 } 1796 1797 static inline void free_secdata(void *secdata) 1798 { } 1799 #endif /* CONFIG_SECURITY */ 1800 1801 #endif /* ! __LINUX_SECURITY_H */ 1802 1803