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