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 /* Default (no) options for the capable function */ 58 #define CAP_OPT_NONE 0x0 59 /* If capable should audit the security request */ 60 #define CAP_OPT_NOAUDIT BIT(1) 61 /* If capable is being called by a setid function */ 62 #define CAP_OPT_INSETID BIT(2) 63 64 /* LSM Agnostic defines for sb_set_mnt_opts */ 65 #define SECURITY_LSM_NATIVE_LABELS 1 66 67 struct ctl_table; 68 struct audit_krule; 69 struct user_namespace; 70 struct timezone; 71 72 enum lsm_event { 73 LSM_POLICY_CHANGE, 74 }; 75 76 /* These functions are in security/commoncap.c */ 77 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 78 int cap, unsigned int opts); 79 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 80 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 81 extern int cap_ptrace_traceme(struct task_struct *parent); 82 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 83 extern int cap_capset(struct cred *new, const struct cred *old, 84 const kernel_cap_t *effective, 85 const kernel_cap_t *inheritable, 86 const kernel_cap_t *permitted); 87 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 88 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 89 const void *value, size_t size, int flags); 90 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 91 extern int cap_inode_need_killpriv(struct dentry *dentry); 92 extern int cap_inode_killpriv(struct dentry *dentry); 93 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 94 void **buffer, bool alloc); 95 extern int cap_mmap_addr(unsigned long addr); 96 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 97 unsigned long prot, unsigned long flags); 98 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 99 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 100 unsigned long arg4, unsigned long arg5); 101 extern int cap_task_setscheduler(struct task_struct *p); 102 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 103 extern int cap_task_setnice(struct task_struct *p, int nice); 104 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 105 106 struct msghdr; 107 struct sk_buff; 108 struct sock; 109 struct sockaddr; 110 struct socket; 111 struct flowi; 112 struct dst_entry; 113 struct xfrm_selector; 114 struct xfrm_policy; 115 struct xfrm_state; 116 struct xfrm_user_sec_ctx; 117 struct seq_file; 118 struct sctp_endpoint; 119 120 #ifdef CONFIG_MMU 121 extern unsigned long mmap_min_addr; 122 extern unsigned long dac_mmap_min_addr; 123 #else 124 #define mmap_min_addr 0UL 125 #define dac_mmap_min_addr 0UL 126 #endif 127 128 /* 129 * Values used in the task_security_ops calls 130 */ 131 /* setuid or setgid, id0 == uid or gid */ 132 #define LSM_SETID_ID 1 133 134 /* setreuid or setregid, id0 == real, id1 == eff */ 135 #define LSM_SETID_RE 2 136 137 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 138 #define LSM_SETID_RES 4 139 140 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 141 #define LSM_SETID_FS 8 142 143 /* Flags for security_task_prlimit(). */ 144 #define LSM_PRLIMIT_READ 1 145 #define LSM_PRLIMIT_WRITE 2 146 147 /* forward declares to avoid warnings */ 148 struct sched_param; 149 struct request_sock; 150 151 /* bprm->unsafe reasons */ 152 #define LSM_UNSAFE_SHARE 1 153 #define LSM_UNSAFE_PTRACE 2 154 #define LSM_UNSAFE_NO_NEW_PRIVS 4 155 156 #ifdef CONFIG_MMU 157 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 158 void __user *buffer, size_t *lenp, loff_t *ppos); 159 #endif 160 161 /* security_inode_init_security callback function to write xattrs */ 162 typedef int (*initxattrs) (struct inode *inode, 163 const struct xattr *xattr_array, void *fs_data); 164 165 166 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 167 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 168 #define __data_id_stringify(dummy, str) #str, 169 170 enum kernel_load_data_id { 171 __kernel_read_file_id(__data_id_enumify) 172 }; 173 174 static const char * const kernel_load_data_str[] = { 175 __kernel_read_file_id(__data_id_stringify) 176 }; 177 178 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 179 { 180 if ((unsigned)id >= LOADING_MAX_ID) 181 return kernel_load_data_str[LOADING_UNKNOWN]; 182 183 return kernel_load_data_str[id]; 184 } 185 186 #ifdef CONFIG_SECURITY 187 188 int call_lsm_notifier(enum lsm_event event, void *data); 189 int register_lsm_notifier(struct notifier_block *nb); 190 int unregister_lsm_notifier(struct notifier_block *nb); 191 192 /* prototypes */ 193 extern int security_init(void); 194 195 /* Security operations */ 196 int security_binder_set_context_mgr(struct task_struct *mgr); 197 int security_binder_transaction(struct task_struct *from, 198 struct task_struct *to); 199 int security_binder_transfer_binder(struct task_struct *from, 200 struct task_struct *to); 201 int security_binder_transfer_file(struct task_struct *from, 202 struct task_struct *to, struct file *file); 203 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 204 int security_ptrace_traceme(struct task_struct *parent); 205 int security_capget(struct task_struct *target, 206 kernel_cap_t *effective, 207 kernel_cap_t *inheritable, 208 kernel_cap_t *permitted); 209 int security_capset(struct cred *new, const struct cred *old, 210 const kernel_cap_t *effective, 211 const kernel_cap_t *inheritable, 212 const kernel_cap_t *permitted); 213 int security_capable(const struct cred *cred, 214 struct user_namespace *ns, 215 int cap, 216 unsigned int opts); 217 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 218 int security_quota_on(struct dentry *dentry); 219 int security_syslog(int type); 220 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 221 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 222 int security_bprm_set_creds(struct linux_binprm *bprm); 223 int security_bprm_check(struct linux_binprm *bprm); 224 void security_bprm_committing_creds(struct linux_binprm *bprm); 225 void security_bprm_committed_creds(struct linux_binprm *bprm); 226 int security_sb_alloc(struct super_block *sb); 227 void security_sb_free(struct super_block *sb); 228 void security_free_mnt_opts(void **mnt_opts); 229 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 230 int security_sb_remount(struct super_block *sb, void *mnt_opts); 231 int security_sb_kern_mount(struct super_block *sb); 232 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 233 int security_sb_statfs(struct dentry *dentry); 234 int security_sb_mount(const char *dev_name, const struct path *path, 235 const char *type, unsigned long flags, void *data); 236 int security_sb_umount(struct vfsmount *mnt, int flags); 237 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 238 int security_sb_set_mnt_opts(struct super_block *sb, 239 void *mnt_opts, 240 unsigned long kern_flags, 241 unsigned long *set_kern_flags); 242 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 243 struct super_block *newsb, 244 unsigned long kern_flags, 245 unsigned long *set_kern_flags); 246 int security_add_mnt_opt(const char *option, const char *val, 247 int len, void **mnt_opts); 248 int security_dentry_init_security(struct dentry *dentry, int mode, 249 const struct qstr *name, void **ctx, 250 u32 *ctxlen); 251 int security_dentry_create_files_as(struct dentry *dentry, int mode, 252 struct qstr *name, 253 const struct cred *old, 254 struct cred *new); 255 256 int security_inode_alloc(struct inode *inode); 257 void security_inode_free(struct inode *inode); 258 int security_inode_init_security(struct inode *inode, struct inode *dir, 259 const struct qstr *qstr, 260 initxattrs initxattrs, void *fs_data); 261 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 262 const struct qstr *qstr, const char **name, 263 void **value, size_t *len); 264 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 265 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 266 struct dentry *new_dentry); 267 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 268 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 269 const char *old_name); 270 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 271 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 272 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 273 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 274 struct inode *new_dir, struct dentry *new_dentry, 275 unsigned int flags); 276 int security_inode_readlink(struct dentry *dentry); 277 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 278 bool rcu); 279 int security_inode_permission(struct inode *inode, int mask); 280 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 281 int security_inode_getattr(const struct path *path); 282 int security_inode_setxattr(struct dentry *dentry, const char *name, 283 const void *value, size_t size, int flags); 284 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 285 const void *value, size_t size, int flags); 286 int security_inode_getxattr(struct dentry *dentry, const char *name); 287 int security_inode_listxattr(struct dentry *dentry); 288 int security_inode_removexattr(struct dentry *dentry, const char *name); 289 int security_inode_need_killpriv(struct dentry *dentry); 290 int security_inode_killpriv(struct dentry *dentry); 291 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 292 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 293 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 294 void security_inode_getsecid(struct inode *inode, u32 *secid); 295 int security_inode_copy_up(struct dentry *src, struct cred **new); 296 int security_inode_copy_up_xattr(const char *name); 297 int security_file_permission(struct file *file, int mask); 298 int security_file_alloc(struct file *file); 299 void security_file_free(struct file *file); 300 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 301 int security_mmap_file(struct file *file, unsigned long prot, 302 unsigned long flags); 303 int security_mmap_addr(unsigned long addr); 304 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 305 unsigned long prot); 306 int security_file_lock(struct file *file, unsigned int cmd); 307 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 308 void security_file_set_fowner(struct file *file); 309 int security_file_send_sigiotask(struct task_struct *tsk, 310 struct fown_struct *fown, int sig); 311 int security_file_receive(struct file *file); 312 int security_file_open(struct file *file); 313 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 314 void security_task_free(struct task_struct *task); 315 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 316 void security_cred_free(struct cred *cred); 317 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 318 void security_transfer_creds(struct cred *new, const struct cred *old); 319 void security_cred_getsecid(const struct cred *c, u32 *secid); 320 int security_kernel_act_as(struct cred *new, u32 secid); 321 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 322 int security_kernel_module_request(char *kmod_name); 323 int security_kernel_load_data(enum kernel_load_data_id id); 324 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 325 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 326 enum kernel_read_file_id id); 327 int security_task_fix_setuid(struct cred *new, const struct cred *old, 328 int flags); 329 int security_task_setpgid(struct task_struct *p, pid_t pgid); 330 int security_task_getpgid(struct task_struct *p); 331 int security_task_getsid(struct task_struct *p); 332 void security_task_getsecid(struct task_struct *p, u32 *secid); 333 int security_task_setnice(struct task_struct *p, int nice); 334 int security_task_setioprio(struct task_struct *p, int ioprio); 335 int security_task_getioprio(struct task_struct *p); 336 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 337 unsigned int flags); 338 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 339 struct rlimit *new_rlim); 340 int security_task_setscheduler(struct task_struct *p); 341 int security_task_getscheduler(struct task_struct *p); 342 int security_task_movememory(struct task_struct *p); 343 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 344 int sig, const struct cred *cred); 345 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 346 unsigned long arg4, unsigned long arg5); 347 void security_task_to_inode(struct task_struct *p, struct inode *inode); 348 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 349 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 350 int security_msg_msg_alloc(struct msg_msg *msg); 351 void security_msg_msg_free(struct msg_msg *msg); 352 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 353 void security_msg_queue_free(struct kern_ipc_perm *msq); 354 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 355 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 356 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 357 struct msg_msg *msg, int msqflg); 358 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 359 struct task_struct *target, long type, int mode); 360 int security_shm_alloc(struct kern_ipc_perm *shp); 361 void security_shm_free(struct kern_ipc_perm *shp); 362 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 363 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 364 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 365 int security_sem_alloc(struct kern_ipc_perm *sma); 366 void security_sem_free(struct kern_ipc_perm *sma); 367 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 368 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 369 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 370 unsigned nsops, int alter); 371 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 372 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 373 char **value); 374 int security_setprocattr(const char *lsm, const char *name, void *value, 375 size_t size); 376 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 377 int security_ismaclabel(const char *name); 378 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 379 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 380 void security_release_secctx(char *secdata, u32 seclen); 381 382 void security_inode_invalidate_secctx(struct inode *inode); 383 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 384 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 385 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 386 #else /* CONFIG_SECURITY */ 387 388 static inline int call_lsm_notifier(enum lsm_event event, void *data) 389 { 390 return 0; 391 } 392 393 static inline int register_lsm_notifier(struct notifier_block *nb) 394 { 395 return 0; 396 } 397 398 static inline int unregister_lsm_notifier(struct notifier_block *nb) 399 { 400 return 0; 401 } 402 403 static inline void security_free_mnt_opts(void **mnt_opts) 404 { 405 } 406 407 /* 408 * This is the default capabilities functionality. Most of these functions 409 * are just stubbed out, but a few must call the proper capable code. 410 */ 411 412 static inline int security_init(void) 413 { 414 return 0; 415 } 416 417 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 418 { 419 return 0; 420 } 421 422 static inline int security_binder_transaction(struct task_struct *from, 423 struct task_struct *to) 424 { 425 return 0; 426 } 427 428 static inline int security_binder_transfer_binder(struct task_struct *from, 429 struct task_struct *to) 430 { 431 return 0; 432 } 433 434 static inline int security_binder_transfer_file(struct task_struct *from, 435 struct task_struct *to, 436 struct file *file) 437 { 438 return 0; 439 } 440 441 static inline int security_ptrace_access_check(struct task_struct *child, 442 unsigned int mode) 443 { 444 return cap_ptrace_access_check(child, mode); 445 } 446 447 static inline int security_ptrace_traceme(struct task_struct *parent) 448 { 449 return cap_ptrace_traceme(parent); 450 } 451 452 static inline int security_capget(struct task_struct *target, 453 kernel_cap_t *effective, 454 kernel_cap_t *inheritable, 455 kernel_cap_t *permitted) 456 { 457 return cap_capget(target, effective, inheritable, permitted); 458 } 459 460 static inline int security_capset(struct cred *new, 461 const struct cred *old, 462 const kernel_cap_t *effective, 463 const kernel_cap_t *inheritable, 464 const kernel_cap_t *permitted) 465 { 466 return cap_capset(new, old, effective, inheritable, permitted); 467 } 468 469 static inline int security_capable(const struct cred *cred, 470 struct user_namespace *ns, 471 int cap, 472 unsigned int opts) 473 { 474 return cap_capable(cred, ns, cap, opts); 475 } 476 477 static inline int security_quotactl(int cmds, int type, int id, 478 struct super_block *sb) 479 { 480 return 0; 481 } 482 483 static inline int security_quota_on(struct dentry *dentry) 484 { 485 return 0; 486 } 487 488 static inline int security_syslog(int type) 489 { 490 return 0; 491 } 492 493 static inline int security_settime64(const struct timespec64 *ts, 494 const struct timezone *tz) 495 { 496 return cap_settime(ts, tz); 497 } 498 499 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 500 { 501 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 502 } 503 504 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 505 { 506 return cap_bprm_set_creds(bprm); 507 } 508 509 static inline int security_bprm_check(struct linux_binprm *bprm) 510 { 511 return 0; 512 } 513 514 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 515 { 516 } 517 518 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 519 { 520 } 521 522 static inline int security_sb_alloc(struct super_block *sb) 523 { 524 return 0; 525 } 526 527 static inline void security_sb_free(struct super_block *sb) 528 { } 529 530 static inline int security_sb_eat_lsm_opts(char *options, 531 void **mnt_opts) 532 { 533 return 0; 534 } 535 536 static inline int security_sb_remount(struct super_block *sb, 537 void *mnt_opts) 538 { 539 return 0; 540 } 541 542 static inline int security_sb_kern_mount(struct super_block *sb) 543 { 544 return 0; 545 } 546 547 static inline int security_sb_show_options(struct seq_file *m, 548 struct super_block *sb) 549 { 550 return 0; 551 } 552 553 static inline int security_sb_statfs(struct dentry *dentry) 554 { 555 return 0; 556 } 557 558 static inline int security_sb_mount(const char *dev_name, const struct path *path, 559 const char *type, unsigned long flags, 560 void *data) 561 { 562 return 0; 563 } 564 565 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 566 { 567 return 0; 568 } 569 570 static inline int security_sb_pivotroot(const struct path *old_path, 571 const struct path *new_path) 572 { 573 return 0; 574 } 575 576 static inline int security_sb_set_mnt_opts(struct super_block *sb, 577 void *mnt_opts, 578 unsigned long kern_flags, 579 unsigned long *set_kern_flags) 580 { 581 return 0; 582 } 583 584 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 585 struct super_block *newsb, 586 unsigned long kern_flags, 587 unsigned long *set_kern_flags) 588 { 589 return 0; 590 } 591 592 static inline int security_add_mnt_opt(const char *option, const char *val, 593 int len, void **mnt_opts) 594 { 595 return 0; 596 } 597 598 static inline int security_inode_alloc(struct inode *inode) 599 { 600 return 0; 601 } 602 603 static inline void security_inode_free(struct inode *inode) 604 { } 605 606 static inline int security_dentry_init_security(struct dentry *dentry, 607 int mode, 608 const struct qstr *name, 609 void **ctx, 610 u32 *ctxlen) 611 { 612 return -EOPNOTSUPP; 613 } 614 615 static inline int security_dentry_create_files_as(struct dentry *dentry, 616 int mode, struct qstr *name, 617 const struct cred *old, 618 struct cred *new) 619 { 620 return 0; 621 } 622 623 624 static inline int security_inode_init_security(struct inode *inode, 625 struct inode *dir, 626 const struct qstr *qstr, 627 const initxattrs xattrs, 628 void *fs_data) 629 { 630 return 0; 631 } 632 633 static inline int security_old_inode_init_security(struct inode *inode, 634 struct inode *dir, 635 const struct qstr *qstr, 636 const char **name, 637 void **value, size_t *len) 638 { 639 return -EOPNOTSUPP; 640 } 641 642 static inline int security_inode_create(struct inode *dir, 643 struct dentry *dentry, 644 umode_t mode) 645 { 646 return 0; 647 } 648 649 static inline int security_inode_link(struct dentry *old_dentry, 650 struct inode *dir, 651 struct dentry *new_dentry) 652 { 653 return 0; 654 } 655 656 static inline int security_inode_unlink(struct inode *dir, 657 struct dentry *dentry) 658 { 659 return 0; 660 } 661 662 static inline int security_inode_symlink(struct inode *dir, 663 struct dentry *dentry, 664 const char *old_name) 665 { 666 return 0; 667 } 668 669 static inline int security_inode_mkdir(struct inode *dir, 670 struct dentry *dentry, 671 int mode) 672 { 673 return 0; 674 } 675 676 static inline int security_inode_rmdir(struct inode *dir, 677 struct dentry *dentry) 678 { 679 return 0; 680 } 681 682 static inline int security_inode_mknod(struct inode *dir, 683 struct dentry *dentry, 684 int mode, dev_t dev) 685 { 686 return 0; 687 } 688 689 static inline int security_inode_rename(struct inode *old_dir, 690 struct dentry *old_dentry, 691 struct inode *new_dir, 692 struct dentry *new_dentry, 693 unsigned int flags) 694 { 695 return 0; 696 } 697 698 static inline int security_inode_readlink(struct dentry *dentry) 699 { 700 return 0; 701 } 702 703 static inline int security_inode_follow_link(struct dentry *dentry, 704 struct inode *inode, 705 bool rcu) 706 { 707 return 0; 708 } 709 710 static inline int security_inode_permission(struct inode *inode, int mask) 711 { 712 return 0; 713 } 714 715 static inline int security_inode_setattr(struct dentry *dentry, 716 struct iattr *attr) 717 { 718 return 0; 719 } 720 721 static inline int security_inode_getattr(const struct path *path) 722 { 723 return 0; 724 } 725 726 static inline int security_inode_setxattr(struct dentry *dentry, 727 const char *name, const void *value, size_t size, int flags) 728 { 729 return cap_inode_setxattr(dentry, name, value, size, flags); 730 } 731 732 static inline void security_inode_post_setxattr(struct dentry *dentry, 733 const char *name, const void *value, size_t size, int flags) 734 { } 735 736 static inline int security_inode_getxattr(struct dentry *dentry, 737 const char *name) 738 { 739 return 0; 740 } 741 742 static inline int security_inode_listxattr(struct dentry *dentry) 743 { 744 return 0; 745 } 746 747 static inline int security_inode_removexattr(struct dentry *dentry, 748 const char *name) 749 { 750 return cap_inode_removexattr(dentry, name); 751 } 752 753 static inline int security_inode_need_killpriv(struct dentry *dentry) 754 { 755 return cap_inode_need_killpriv(dentry); 756 } 757 758 static inline int security_inode_killpriv(struct dentry *dentry) 759 { 760 return cap_inode_killpriv(dentry); 761 } 762 763 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 764 { 765 return -EOPNOTSUPP; 766 } 767 768 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 769 { 770 return -EOPNOTSUPP; 771 } 772 773 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 774 { 775 return 0; 776 } 777 778 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 779 { 780 *secid = 0; 781 } 782 783 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 784 { 785 return 0; 786 } 787 788 static inline int security_inode_copy_up_xattr(const char *name) 789 { 790 return -EOPNOTSUPP; 791 } 792 793 static inline int security_file_permission(struct file *file, int mask) 794 { 795 return 0; 796 } 797 798 static inline int security_file_alloc(struct file *file) 799 { 800 return 0; 801 } 802 803 static inline void security_file_free(struct file *file) 804 { } 805 806 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 807 unsigned long arg) 808 { 809 return 0; 810 } 811 812 static inline int security_mmap_file(struct file *file, unsigned long prot, 813 unsigned long flags) 814 { 815 return 0; 816 } 817 818 static inline int security_mmap_addr(unsigned long addr) 819 { 820 return cap_mmap_addr(addr); 821 } 822 823 static inline int security_file_mprotect(struct vm_area_struct *vma, 824 unsigned long reqprot, 825 unsigned long prot) 826 { 827 return 0; 828 } 829 830 static inline int security_file_lock(struct file *file, unsigned int cmd) 831 { 832 return 0; 833 } 834 835 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 836 unsigned long arg) 837 { 838 return 0; 839 } 840 841 static inline void security_file_set_fowner(struct file *file) 842 { 843 return; 844 } 845 846 static inline int security_file_send_sigiotask(struct task_struct *tsk, 847 struct fown_struct *fown, 848 int sig) 849 { 850 return 0; 851 } 852 853 static inline int security_file_receive(struct file *file) 854 { 855 return 0; 856 } 857 858 static inline int security_file_open(struct file *file) 859 { 860 return 0; 861 } 862 863 static inline int security_task_alloc(struct task_struct *task, 864 unsigned long clone_flags) 865 { 866 return 0; 867 } 868 869 static inline void security_task_free(struct task_struct *task) 870 { } 871 872 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 873 { 874 return 0; 875 } 876 877 static inline void security_cred_free(struct cred *cred) 878 { } 879 880 static inline int security_prepare_creds(struct cred *new, 881 const struct cred *old, 882 gfp_t gfp) 883 { 884 return 0; 885 } 886 887 static inline void security_transfer_creds(struct cred *new, 888 const struct cred *old) 889 { 890 } 891 892 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 893 { 894 return 0; 895 } 896 897 static inline int security_kernel_create_files_as(struct cred *cred, 898 struct inode *inode) 899 { 900 return 0; 901 } 902 903 static inline int security_kernel_module_request(char *kmod_name) 904 { 905 return 0; 906 } 907 908 static inline int security_kernel_load_data(enum kernel_load_data_id id) 909 { 910 return 0; 911 } 912 913 static inline int security_kernel_read_file(struct file *file, 914 enum kernel_read_file_id id) 915 { 916 return 0; 917 } 918 919 static inline int security_kernel_post_read_file(struct file *file, 920 char *buf, loff_t size, 921 enum kernel_read_file_id id) 922 { 923 return 0; 924 } 925 926 static inline int security_task_fix_setuid(struct cred *new, 927 const struct cred *old, 928 int flags) 929 { 930 return cap_task_fix_setuid(new, old, flags); 931 } 932 933 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 934 { 935 return 0; 936 } 937 938 static inline int security_task_getpgid(struct task_struct *p) 939 { 940 return 0; 941 } 942 943 static inline int security_task_getsid(struct task_struct *p) 944 { 945 return 0; 946 } 947 948 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 949 { 950 *secid = 0; 951 } 952 953 static inline int security_task_setnice(struct task_struct *p, int nice) 954 { 955 return cap_task_setnice(p, nice); 956 } 957 958 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 959 { 960 return cap_task_setioprio(p, ioprio); 961 } 962 963 static inline int security_task_getioprio(struct task_struct *p) 964 { 965 return 0; 966 } 967 968 static inline int security_task_prlimit(const struct cred *cred, 969 const struct cred *tcred, 970 unsigned int flags) 971 { 972 return 0; 973 } 974 975 static inline int security_task_setrlimit(struct task_struct *p, 976 unsigned int resource, 977 struct rlimit *new_rlim) 978 { 979 return 0; 980 } 981 982 static inline int security_task_setscheduler(struct task_struct *p) 983 { 984 return cap_task_setscheduler(p); 985 } 986 987 static inline int security_task_getscheduler(struct task_struct *p) 988 { 989 return 0; 990 } 991 992 static inline int security_task_movememory(struct task_struct *p) 993 { 994 return 0; 995 } 996 997 static inline int security_task_kill(struct task_struct *p, 998 struct kernel_siginfo *info, int sig, 999 const struct cred *cred) 1000 { 1001 return 0; 1002 } 1003 1004 static inline int security_task_prctl(int option, unsigned long arg2, 1005 unsigned long arg3, 1006 unsigned long arg4, 1007 unsigned long arg5) 1008 { 1009 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1010 } 1011 1012 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1013 { } 1014 1015 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1016 short flag) 1017 { 1018 return 0; 1019 } 1020 1021 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1022 { 1023 *secid = 0; 1024 } 1025 1026 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1027 { 1028 return 0; 1029 } 1030 1031 static inline void security_msg_msg_free(struct msg_msg *msg) 1032 { } 1033 1034 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1035 { 1036 return 0; 1037 } 1038 1039 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1040 { } 1041 1042 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1043 int msqflg) 1044 { 1045 return 0; 1046 } 1047 1048 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1049 { 1050 return 0; 1051 } 1052 1053 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1054 struct msg_msg *msg, int msqflg) 1055 { 1056 return 0; 1057 } 1058 1059 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1060 struct msg_msg *msg, 1061 struct task_struct *target, 1062 long type, int mode) 1063 { 1064 return 0; 1065 } 1066 1067 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1068 { 1069 return 0; 1070 } 1071 1072 static inline void security_shm_free(struct kern_ipc_perm *shp) 1073 { } 1074 1075 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1076 int shmflg) 1077 { 1078 return 0; 1079 } 1080 1081 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1082 { 1083 return 0; 1084 } 1085 1086 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1087 char __user *shmaddr, int shmflg) 1088 { 1089 return 0; 1090 } 1091 1092 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1093 { 1094 return 0; 1095 } 1096 1097 static inline void security_sem_free(struct kern_ipc_perm *sma) 1098 { } 1099 1100 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1101 { 1102 return 0; 1103 } 1104 1105 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1106 { 1107 return 0; 1108 } 1109 1110 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1111 struct sembuf *sops, unsigned nsops, 1112 int alter) 1113 { 1114 return 0; 1115 } 1116 1117 static inline void security_d_instantiate(struct dentry *dentry, 1118 struct inode *inode) 1119 { } 1120 1121 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1122 char *name, char **value) 1123 { 1124 return -EINVAL; 1125 } 1126 1127 static inline int security_setprocattr(const char *lsm, char *name, 1128 void *value, size_t size) 1129 { 1130 return -EINVAL; 1131 } 1132 1133 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1134 { 1135 return 0; 1136 } 1137 1138 static inline int security_ismaclabel(const char *name) 1139 { 1140 return 0; 1141 } 1142 1143 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1144 { 1145 return -EOPNOTSUPP; 1146 } 1147 1148 static inline int security_secctx_to_secid(const char *secdata, 1149 u32 seclen, 1150 u32 *secid) 1151 { 1152 return -EOPNOTSUPP; 1153 } 1154 1155 static inline void security_release_secctx(char *secdata, u32 seclen) 1156 { 1157 } 1158 1159 static inline void security_inode_invalidate_secctx(struct inode *inode) 1160 { 1161 } 1162 1163 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1164 { 1165 return -EOPNOTSUPP; 1166 } 1167 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1168 { 1169 return -EOPNOTSUPP; 1170 } 1171 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1172 { 1173 return -EOPNOTSUPP; 1174 } 1175 #endif /* CONFIG_SECURITY */ 1176 1177 #ifdef CONFIG_SECURITY_NETWORK 1178 1179 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1180 int security_unix_may_send(struct socket *sock, struct socket *other); 1181 int security_socket_create(int family, int type, int protocol, int kern); 1182 int security_socket_post_create(struct socket *sock, int family, 1183 int type, int protocol, int kern); 1184 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1185 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1186 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1187 int security_socket_listen(struct socket *sock, int backlog); 1188 int security_socket_accept(struct socket *sock, struct socket *newsock); 1189 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1190 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1191 int size, int flags); 1192 int security_socket_getsockname(struct socket *sock); 1193 int security_socket_getpeername(struct socket *sock); 1194 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1195 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1196 int security_socket_shutdown(struct socket *sock, int how); 1197 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1198 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1199 int __user *optlen, unsigned len); 1200 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1201 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1202 void security_sk_free(struct sock *sk); 1203 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1204 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1205 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1206 void security_sock_graft(struct sock*sk, struct socket *parent); 1207 int security_inet_conn_request(struct sock *sk, 1208 struct sk_buff *skb, struct request_sock *req); 1209 void security_inet_csk_clone(struct sock *newsk, 1210 const struct request_sock *req); 1211 void security_inet_conn_established(struct sock *sk, 1212 struct sk_buff *skb); 1213 int security_secmark_relabel_packet(u32 secid); 1214 void security_secmark_refcount_inc(void); 1215 void security_secmark_refcount_dec(void); 1216 int security_tun_dev_alloc_security(void **security); 1217 void security_tun_dev_free_security(void *security); 1218 int security_tun_dev_create(void); 1219 int security_tun_dev_attach_queue(void *security); 1220 int security_tun_dev_attach(struct sock *sk, void *security); 1221 int security_tun_dev_open(void *security); 1222 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1223 int security_sctp_bind_connect(struct sock *sk, int optname, 1224 struct sockaddr *address, int addrlen); 1225 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1226 struct sock *newsk); 1227 1228 #else /* CONFIG_SECURITY_NETWORK */ 1229 static inline int security_unix_stream_connect(struct sock *sock, 1230 struct sock *other, 1231 struct sock *newsk) 1232 { 1233 return 0; 1234 } 1235 1236 static inline int security_unix_may_send(struct socket *sock, 1237 struct socket *other) 1238 { 1239 return 0; 1240 } 1241 1242 static inline int security_socket_create(int family, int type, 1243 int protocol, int kern) 1244 { 1245 return 0; 1246 } 1247 1248 static inline int security_socket_post_create(struct socket *sock, 1249 int family, 1250 int type, 1251 int protocol, int kern) 1252 { 1253 return 0; 1254 } 1255 1256 static inline int security_socket_socketpair(struct socket *socka, 1257 struct socket *sockb) 1258 { 1259 return 0; 1260 } 1261 1262 static inline int security_socket_bind(struct socket *sock, 1263 struct sockaddr *address, 1264 int addrlen) 1265 { 1266 return 0; 1267 } 1268 1269 static inline int security_socket_connect(struct socket *sock, 1270 struct sockaddr *address, 1271 int addrlen) 1272 { 1273 return 0; 1274 } 1275 1276 static inline int security_socket_listen(struct socket *sock, int backlog) 1277 { 1278 return 0; 1279 } 1280 1281 static inline int security_socket_accept(struct socket *sock, 1282 struct socket *newsock) 1283 { 1284 return 0; 1285 } 1286 1287 static inline int security_socket_sendmsg(struct socket *sock, 1288 struct msghdr *msg, int size) 1289 { 1290 return 0; 1291 } 1292 1293 static inline int security_socket_recvmsg(struct socket *sock, 1294 struct msghdr *msg, int size, 1295 int flags) 1296 { 1297 return 0; 1298 } 1299 1300 static inline int security_socket_getsockname(struct socket *sock) 1301 { 1302 return 0; 1303 } 1304 1305 static inline int security_socket_getpeername(struct socket *sock) 1306 { 1307 return 0; 1308 } 1309 1310 static inline int security_socket_getsockopt(struct socket *sock, 1311 int level, int optname) 1312 { 1313 return 0; 1314 } 1315 1316 static inline int security_socket_setsockopt(struct socket *sock, 1317 int level, int optname) 1318 { 1319 return 0; 1320 } 1321 1322 static inline int security_socket_shutdown(struct socket *sock, int how) 1323 { 1324 return 0; 1325 } 1326 static inline int security_sock_rcv_skb(struct sock *sk, 1327 struct sk_buff *skb) 1328 { 1329 return 0; 1330 } 1331 1332 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1333 int __user *optlen, unsigned len) 1334 { 1335 return -ENOPROTOOPT; 1336 } 1337 1338 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1339 { 1340 return -ENOPROTOOPT; 1341 } 1342 1343 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1344 { 1345 return 0; 1346 } 1347 1348 static inline void security_sk_free(struct sock *sk) 1349 { 1350 } 1351 1352 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1353 { 1354 } 1355 1356 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1357 { 1358 } 1359 1360 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1361 { 1362 } 1363 1364 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1365 { 1366 } 1367 1368 static inline int security_inet_conn_request(struct sock *sk, 1369 struct sk_buff *skb, struct request_sock *req) 1370 { 1371 return 0; 1372 } 1373 1374 static inline void security_inet_csk_clone(struct sock *newsk, 1375 const struct request_sock *req) 1376 { 1377 } 1378 1379 static inline void security_inet_conn_established(struct sock *sk, 1380 struct sk_buff *skb) 1381 { 1382 } 1383 1384 static inline int security_secmark_relabel_packet(u32 secid) 1385 { 1386 return 0; 1387 } 1388 1389 static inline void security_secmark_refcount_inc(void) 1390 { 1391 } 1392 1393 static inline void security_secmark_refcount_dec(void) 1394 { 1395 } 1396 1397 static inline int security_tun_dev_alloc_security(void **security) 1398 { 1399 return 0; 1400 } 1401 1402 static inline void security_tun_dev_free_security(void *security) 1403 { 1404 } 1405 1406 static inline int security_tun_dev_create(void) 1407 { 1408 return 0; 1409 } 1410 1411 static inline int security_tun_dev_attach_queue(void *security) 1412 { 1413 return 0; 1414 } 1415 1416 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1417 { 1418 return 0; 1419 } 1420 1421 static inline int security_tun_dev_open(void *security) 1422 { 1423 return 0; 1424 } 1425 1426 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1427 struct sk_buff *skb) 1428 { 1429 return 0; 1430 } 1431 1432 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1433 struct sockaddr *address, 1434 int addrlen) 1435 { 1436 return 0; 1437 } 1438 1439 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1440 struct sock *sk, 1441 struct sock *newsk) 1442 { 1443 } 1444 #endif /* CONFIG_SECURITY_NETWORK */ 1445 1446 #ifdef CONFIG_SECURITY_INFINIBAND 1447 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1448 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1449 int security_ib_alloc_security(void **sec); 1450 void security_ib_free_security(void *sec); 1451 #else /* CONFIG_SECURITY_INFINIBAND */ 1452 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1453 { 1454 return 0; 1455 } 1456 1457 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1458 { 1459 return 0; 1460 } 1461 1462 static inline int security_ib_alloc_security(void **sec) 1463 { 1464 return 0; 1465 } 1466 1467 static inline void security_ib_free_security(void *sec) 1468 { 1469 } 1470 #endif /* CONFIG_SECURITY_INFINIBAND */ 1471 1472 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1473 1474 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1475 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1476 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1477 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1478 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1479 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1480 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1481 struct xfrm_sec_ctx *polsec, u32 secid); 1482 int security_xfrm_state_delete(struct xfrm_state *x); 1483 void security_xfrm_state_free(struct xfrm_state *x); 1484 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1485 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1486 struct xfrm_policy *xp, 1487 const struct flowi *fl); 1488 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1489 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1490 1491 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1492 1493 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1494 struct xfrm_user_sec_ctx *sec_ctx, 1495 gfp_t gfp) 1496 { 1497 return 0; 1498 } 1499 1500 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1501 { 1502 return 0; 1503 } 1504 1505 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1506 { 1507 } 1508 1509 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1510 { 1511 return 0; 1512 } 1513 1514 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1515 struct xfrm_user_sec_ctx *sec_ctx) 1516 { 1517 return 0; 1518 } 1519 1520 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1521 struct xfrm_sec_ctx *polsec, u32 secid) 1522 { 1523 return 0; 1524 } 1525 1526 static inline void security_xfrm_state_free(struct xfrm_state *x) 1527 { 1528 } 1529 1530 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1531 { 1532 return 0; 1533 } 1534 1535 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1536 { 1537 return 0; 1538 } 1539 1540 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1541 struct xfrm_policy *xp, const struct flowi *fl) 1542 { 1543 return 1; 1544 } 1545 1546 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1547 { 1548 return 0; 1549 } 1550 1551 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1552 { 1553 } 1554 1555 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1556 1557 #ifdef CONFIG_SECURITY_PATH 1558 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1559 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1560 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1561 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1562 unsigned int dev); 1563 int security_path_truncate(const struct path *path); 1564 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1565 const char *old_name); 1566 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1567 struct dentry *new_dentry); 1568 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1569 const struct path *new_dir, struct dentry *new_dentry, 1570 unsigned int flags); 1571 int security_path_chmod(const struct path *path, umode_t mode); 1572 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1573 int security_path_chroot(const struct path *path); 1574 #else /* CONFIG_SECURITY_PATH */ 1575 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1576 { 1577 return 0; 1578 } 1579 1580 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1581 umode_t mode) 1582 { 1583 return 0; 1584 } 1585 1586 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1587 { 1588 return 0; 1589 } 1590 1591 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1592 umode_t mode, unsigned int dev) 1593 { 1594 return 0; 1595 } 1596 1597 static inline int security_path_truncate(const struct path *path) 1598 { 1599 return 0; 1600 } 1601 1602 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1603 const char *old_name) 1604 { 1605 return 0; 1606 } 1607 1608 static inline int security_path_link(struct dentry *old_dentry, 1609 const struct path *new_dir, 1610 struct dentry *new_dentry) 1611 { 1612 return 0; 1613 } 1614 1615 static inline int security_path_rename(const struct path *old_dir, 1616 struct dentry *old_dentry, 1617 const struct path *new_dir, 1618 struct dentry *new_dentry, 1619 unsigned int flags) 1620 { 1621 return 0; 1622 } 1623 1624 static inline int security_path_chmod(const struct path *path, umode_t mode) 1625 { 1626 return 0; 1627 } 1628 1629 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1630 { 1631 return 0; 1632 } 1633 1634 static inline int security_path_chroot(const struct path *path) 1635 { 1636 return 0; 1637 } 1638 #endif /* CONFIG_SECURITY_PATH */ 1639 1640 #ifdef CONFIG_KEYS 1641 #ifdef CONFIG_SECURITY 1642 1643 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1644 void security_key_free(struct key *key); 1645 int security_key_permission(key_ref_t key_ref, 1646 const struct cred *cred, unsigned perm); 1647 int security_key_getsecurity(struct key *key, char **_buffer); 1648 1649 #else 1650 1651 static inline int security_key_alloc(struct key *key, 1652 const struct cred *cred, 1653 unsigned long flags) 1654 { 1655 return 0; 1656 } 1657 1658 static inline void security_key_free(struct key *key) 1659 { 1660 } 1661 1662 static inline int security_key_permission(key_ref_t key_ref, 1663 const struct cred *cred, 1664 unsigned perm) 1665 { 1666 return 0; 1667 } 1668 1669 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1670 { 1671 *_buffer = NULL; 1672 return 0; 1673 } 1674 1675 #endif 1676 #endif /* CONFIG_KEYS */ 1677 1678 #ifdef CONFIG_AUDIT 1679 #ifdef CONFIG_SECURITY 1680 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1681 int security_audit_rule_known(struct audit_krule *krule); 1682 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1683 void security_audit_rule_free(void *lsmrule); 1684 1685 #else 1686 1687 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1688 void **lsmrule) 1689 { 1690 return 0; 1691 } 1692 1693 static inline int security_audit_rule_known(struct audit_krule *krule) 1694 { 1695 return 0; 1696 } 1697 1698 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1699 void *lsmrule) 1700 { 1701 return 0; 1702 } 1703 1704 static inline void security_audit_rule_free(void *lsmrule) 1705 { } 1706 1707 #endif /* CONFIG_SECURITY */ 1708 #endif /* CONFIG_AUDIT */ 1709 1710 #ifdef CONFIG_SECURITYFS 1711 1712 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1713 struct dentry *parent, void *data, 1714 const struct file_operations *fops); 1715 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1716 struct dentry *securityfs_create_symlink(const char *name, 1717 struct dentry *parent, 1718 const char *target, 1719 const struct inode_operations *iops); 1720 extern void securityfs_remove(struct dentry *dentry); 1721 1722 #else /* CONFIG_SECURITYFS */ 1723 1724 static inline struct dentry *securityfs_create_dir(const char *name, 1725 struct dentry *parent) 1726 { 1727 return ERR_PTR(-ENODEV); 1728 } 1729 1730 static inline struct dentry *securityfs_create_file(const char *name, 1731 umode_t mode, 1732 struct dentry *parent, 1733 void *data, 1734 const struct file_operations *fops) 1735 { 1736 return ERR_PTR(-ENODEV); 1737 } 1738 1739 static inline struct dentry *securityfs_create_symlink(const char *name, 1740 struct dentry *parent, 1741 const char *target, 1742 const struct inode_operations *iops) 1743 { 1744 return ERR_PTR(-ENODEV); 1745 } 1746 1747 static inline void securityfs_remove(struct dentry *dentry) 1748 {} 1749 1750 #endif 1751 1752 #ifdef CONFIG_BPF_SYSCALL 1753 union bpf_attr; 1754 struct bpf_map; 1755 struct bpf_prog; 1756 struct bpf_prog_aux; 1757 #ifdef CONFIG_SECURITY 1758 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1759 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1760 extern int security_bpf_prog(struct bpf_prog *prog); 1761 extern int security_bpf_map_alloc(struct bpf_map *map); 1762 extern void security_bpf_map_free(struct bpf_map *map); 1763 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1764 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1765 #else 1766 static inline int security_bpf(int cmd, union bpf_attr *attr, 1767 unsigned int size) 1768 { 1769 return 0; 1770 } 1771 1772 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1773 { 1774 return 0; 1775 } 1776 1777 static inline int security_bpf_prog(struct bpf_prog *prog) 1778 { 1779 return 0; 1780 } 1781 1782 static inline int security_bpf_map_alloc(struct bpf_map *map) 1783 { 1784 return 0; 1785 } 1786 1787 static inline void security_bpf_map_free(struct bpf_map *map) 1788 { } 1789 1790 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1791 { 1792 return 0; 1793 } 1794 1795 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1796 { } 1797 #endif /* CONFIG_SECURITY */ 1798 #endif /* CONFIG_BPF_SYSCALL */ 1799 1800 #endif /* ! __LINUX_SECURITY_H */ 1801 1802