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