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 struct fs_context; 57 struct fs_parameter; 58 enum fs_value_type; 59 60 /* Default (no) options for the capable function */ 61 #define CAP_OPT_NONE 0x0 62 /* If capable should audit the security request */ 63 #define CAP_OPT_NOAUDIT BIT(1) 64 /* If capable is being called by a setid function */ 65 #define CAP_OPT_INSETID BIT(2) 66 67 /* LSM Agnostic defines for fs_context::lsm_flags */ 68 #define SECURITY_LSM_NATIVE_LABELS 1 69 70 struct ctl_table; 71 struct audit_krule; 72 struct user_namespace; 73 struct timezone; 74 75 enum lsm_event { 76 LSM_POLICY_CHANGE, 77 }; 78 79 /* These functions are in security/commoncap.c */ 80 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 81 int cap, unsigned int opts); 82 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 83 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 84 extern int cap_ptrace_traceme(struct task_struct *parent); 85 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 86 extern int cap_capset(struct cred *new, const struct cred *old, 87 const kernel_cap_t *effective, 88 const kernel_cap_t *inheritable, 89 const kernel_cap_t *permitted); 90 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 91 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 92 const void *value, size_t size, int flags); 93 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 94 extern int cap_inode_need_killpriv(struct dentry *dentry); 95 extern int cap_inode_killpriv(struct dentry *dentry); 96 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 97 void **buffer, bool alloc); 98 extern int cap_mmap_addr(unsigned long addr); 99 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 100 unsigned long prot, unsigned long flags); 101 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 102 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 103 unsigned long arg4, unsigned long arg5); 104 extern int cap_task_setscheduler(struct task_struct *p); 105 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 106 extern int cap_task_setnice(struct task_struct *p, int nice); 107 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 108 109 struct msghdr; 110 struct sk_buff; 111 struct sock; 112 struct sockaddr; 113 struct socket; 114 struct flowi; 115 struct dst_entry; 116 struct xfrm_selector; 117 struct xfrm_policy; 118 struct xfrm_state; 119 struct xfrm_user_sec_ctx; 120 struct seq_file; 121 struct sctp_endpoint; 122 123 #ifdef CONFIG_MMU 124 extern unsigned long mmap_min_addr; 125 extern unsigned long dac_mmap_min_addr; 126 #else 127 #define mmap_min_addr 0UL 128 #define dac_mmap_min_addr 0UL 129 #endif 130 131 /* 132 * Values used in the task_security_ops calls 133 */ 134 /* setuid or setgid, id0 == uid or gid */ 135 #define LSM_SETID_ID 1 136 137 /* setreuid or setregid, id0 == real, id1 == eff */ 138 #define LSM_SETID_RE 2 139 140 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 141 #define LSM_SETID_RES 4 142 143 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 144 #define LSM_SETID_FS 8 145 146 /* Flags for security_task_prlimit(). */ 147 #define LSM_PRLIMIT_READ 1 148 #define LSM_PRLIMIT_WRITE 2 149 150 /* forward declares to avoid warnings */ 151 struct sched_param; 152 struct request_sock; 153 154 /* bprm->unsafe reasons */ 155 #define LSM_UNSAFE_SHARE 1 156 #define LSM_UNSAFE_PTRACE 2 157 #define LSM_UNSAFE_NO_NEW_PRIVS 4 158 159 #ifdef CONFIG_MMU 160 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 161 void __user *buffer, size_t *lenp, loff_t *ppos); 162 #endif 163 164 /* security_inode_init_security callback function to write xattrs */ 165 typedef int (*initxattrs) (struct inode *inode, 166 const struct xattr *xattr_array, void *fs_data); 167 168 169 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 170 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 171 #define __data_id_stringify(dummy, str) #str, 172 173 enum kernel_load_data_id { 174 __kernel_read_file_id(__data_id_enumify) 175 }; 176 177 static const char * const kernel_load_data_str[] = { 178 __kernel_read_file_id(__data_id_stringify) 179 }; 180 181 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 182 { 183 if ((unsigned)id >= LOADING_MAX_ID) 184 return kernel_load_data_str[LOADING_UNKNOWN]; 185 186 return kernel_load_data_str[id]; 187 } 188 189 #ifdef CONFIG_SECURITY 190 191 int call_lsm_notifier(enum lsm_event event, void *data); 192 int register_lsm_notifier(struct notifier_block *nb); 193 int unregister_lsm_notifier(struct notifier_block *nb); 194 195 /* prototypes */ 196 extern int security_init(void); 197 198 /* Security operations */ 199 int security_binder_set_context_mgr(struct task_struct *mgr); 200 int security_binder_transaction(struct task_struct *from, 201 struct task_struct *to); 202 int security_binder_transfer_binder(struct task_struct *from, 203 struct task_struct *to); 204 int security_binder_transfer_file(struct task_struct *from, 205 struct task_struct *to, struct file *file); 206 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 207 int security_ptrace_traceme(struct task_struct *parent); 208 int security_capget(struct task_struct *target, 209 kernel_cap_t *effective, 210 kernel_cap_t *inheritable, 211 kernel_cap_t *permitted); 212 int security_capset(struct cred *new, const struct cred *old, 213 const kernel_cap_t *effective, 214 const kernel_cap_t *inheritable, 215 const kernel_cap_t *permitted); 216 int security_capable(const struct cred *cred, 217 struct user_namespace *ns, 218 int cap, 219 unsigned int opts); 220 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 221 int security_quota_on(struct dentry *dentry); 222 int security_syslog(int type); 223 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 224 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 225 int security_bprm_set_creds(struct linux_binprm *bprm); 226 int security_bprm_check(struct linux_binprm *bprm); 227 void security_bprm_committing_creds(struct linux_binprm *bprm); 228 void security_bprm_committed_creds(struct linux_binprm *bprm); 229 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 230 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 231 int security_sb_alloc(struct super_block *sb); 232 void security_sb_free(struct super_block *sb); 233 void security_free_mnt_opts(void **mnt_opts); 234 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 235 int security_sb_remount(struct super_block *sb, void *mnt_opts); 236 int security_sb_kern_mount(struct super_block *sb); 237 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 238 int security_sb_statfs(struct dentry *dentry); 239 int security_sb_mount(const char *dev_name, const struct path *path, 240 const char *type, unsigned long flags, void *data); 241 int security_sb_umount(struct vfsmount *mnt, int flags); 242 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 243 int security_sb_set_mnt_opts(struct super_block *sb, 244 void *mnt_opts, 245 unsigned long kern_flags, 246 unsigned long *set_kern_flags); 247 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 248 struct super_block *newsb, 249 unsigned long kern_flags, 250 unsigned long *set_kern_flags); 251 int security_add_mnt_opt(const char *option, const char *val, 252 int len, void **mnt_opts); 253 int security_move_mount(const struct path *from_path, const struct path *to_path); 254 int security_dentry_init_security(struct dentry *dentry, int mode, 255 const struct qstr *name, void **ctx, 256 u32 *ctxlen); 257 int security_dentry_create_files_as(struct dentry *dentry, int mode, 258 struct qstr *name, 259 const struct cred *old, 260 struct cred *new); 261 262 int security_inode_alloc(struct inode *inode); 263 void security_inode_free(struct inode *inode); 264 int security_inode_init_security(struct inode *inode, struct inode *dir, 265 const struct qstr *qstr, 266 initxattrs initxattrs, void *fs_data); 267 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 268 const struct qstr *qstr, const char **name, 269 void **value, size_t *len); 270 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 271 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 272 struct dentry *new_dentry); 273 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 274 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 275 const char *old_name); 276 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 277 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 278 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 279 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 280 struct inode *new_dir, struct dentry *new_dentry, 281 unsigned int flags); 282 int security_inode_readlink(struct dentry *dentry); 283 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 284 bool rcu); 285 int security_inode_permission(struct inode *inode, int mask); 286 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 287 int security_inode_getattr(const struct path *path); 288 int security_inode_setxattr(struct dentry *dentry, const char *name, 289 const void *value, size_t size, int flags); 290 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 291 const void *value, size_t size, int flags); 292 int security_inode_getxattr(struct dentry *dentry, const char *name); 293 int security_inode_listxattr(struct dentry *dentry); 294 int security_inode_removexattr(struct dentry *dentry, const char *name); 295 int security_inode_need_killpriv(struct dentry *dentry); 296 int security_inode_killpriv(struct dentry *dentry); 297 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 298 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 299 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 300 void security_inode_getsecid(struct inode *inode, u32 *secid); 301 int security_inode_copy_up(struct dentry *src, struct cred **new); 302 int security_inode_copy_up_xattr(const char *name); 303 int security_file_permission(struct file *file, int mask); 304 int security_file_alloc(struct file *file); 305 void security_file_free(struct file *file); 306 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 307 int security_mmap_file(struct file *file, unsigned long prot, 308 unsigned long flags); 309 int security_mmap_addr(unsigned long addr); 310 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 311 unsigned long prot); 312 int security_file_lock(struct file *file, unsigned int cmd); 313 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 314 void security_file_set_fowner(struct file *file); 315 int security_file_send_sigiotask(struct task_struct *tsk, 316 struct fown_struct *fown, int sig); 317 int security_file_receive(struct file *file); 318 int security_file_open(struct file *file); 319 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 320 void security_task_free(struct task_struct *task); 321 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 322 void security_cred_free(struct cred *cred); 323 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 324 void security_transfer_creds(struct cred *new, const struct cred *old); 325 void security_cred_getsecid(const struct cred *c, u32 *secid); 326 int security_kernel_act_as(struct cred *new, u32 secid); 327 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 328 int security_kernel_module_request(char *kmod_name); 329 int security_kernel_load_data(enum kernel_load_data_id id); 330 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 331 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 332 enum kernel_read_file_id id); 333 int security_task_fix_setuid(struct cred *new, const struct cred *old, 334 int flags); 335 int security_task_setpgid(struct task_struct *p, pid_t pgid); 336 int security_task_getpgid(struct task_struct *p); 337 int security_task_getsid(struct task_struct *p); 338 void security_task_getsecid(struct task_struct *p, u32 *secid); 339 int security_task_setnice(struct task_struct *p, int nice); 340 int security_task_setioprio(struct task_struct *p, int ioprio); 341 int security_task_getioprio(struct task_struct *p); 342 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 343 unsigned int flags); 344 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 345 struct rlimit *new_rlim); 346 int security_task_setscheduler(struct task_struct *p); 347 int security_task_getscheduler(struct task_struct *p); 348 int security_task_movememory(struct task_struct *p); 349 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 350 int sig, const struct cred *cred); 351 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 352 unsigned long arg4, unsigned long arg5); 353 void security_task_to_inode(struct task_struct *p, struct inode *inode); 354 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 355 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 356 int security_msg_msg_alloc(struct msg_msg *msg); 357 void security_msg_msg_free(struct msg_msg *msg); 358 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 359 void security_msg_queue_free(struct kern_ipc_perm *msq); 360 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 361 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 362 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 363 struct msg_msg *msg, int msqflg); 364 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 365 struct task_struct *target, long type, int mode); 366 int security_shm_alloc(struct kern_ipc_perm *shp); 367 void security_shm_free(struct kern_ipc_perm *shp); 368 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 369 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 370 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 371 int security_sem_alloc(struct kern_ipc_perm *sma); 372 void security_sem_free(struct kern_ipc_perm *sma); 373 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 374 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 375 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 376 unsigned nsops, int alter); 377 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 378 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 379 char **value); 380 int security_setprocattr(const char *lsm, const char *name, void *value, 381 size_t size); 382 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 383 int security_ismaclabel(const char *name); 384 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 385 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 386 void security_release_secctx(char *secdata, u32 seclen); 387 388 void security_inode_invalidate_secctx(struct inode *inode); 389 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 390 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 391 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 392 #else /* CONFIG_SECURITY */ 393 394 static inline int call_lsm_notifier(enum lsm_event event, void *data) 395 { 396 return 0; 397 } 398 399 static inline int register_lsm_notifier(struct notifier_block *nb) 400 { 401 return 0; 402 } 403 404 static inline int unregister_lsm_notifier(struct notifier_block *nb) 405 { 406 return 0; 407 } 408 409 static inline void security_free_mnt_opts(void **mnt_opts) 410 { 411 } 412 413 /* 414 * This is the default capabilities functionality. Most of these functions 415 * are just stubbed out, but a few must call the proper capable code. 416 */ 417 418 static inline int security_init(void) 419 { 420 return 0; 421 } 422 423 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 424 { 425 return 0; 426 } 427 428 static inline int security_binder_transaction(struct task_struct *from, 429 struct task_struct *to) 430 { 431 return 0; 432 } 433 434 static inline int security_binder_transfer_binder(struct task_struct *from, 435 struct task_struct *to) 436 { 437 return 0; 438 } 439 440 static inline int security_binder_transfer_file(struct task_struct *from, 441 struct task_struct *to, 442 struct file *file) 443 { 444 return 0; 445 } 446 447 static inline int security_ptrace_access_check(struct task_struct *child, 448 unsigned int mode) 449 { 450 return cap_ptrace_access_check(child, mode); 451 } 452 453 static inline int security_ptrace_traceme(struct task_struct *parent) 454 { 455 return cap_ptrace_traceme(parent); 456 } 457 458 static inline int security_capget(struct task_struct *target, 459 kernel_cap_t *effective, 460 kernel_cap_t *inheritable, 461 kernel_cap_t *permitted) 462 { 463 return cap_capget(target, effective, inheritable, permitted); 464 } 465 466 static inline int security_capset(struct cred *new, 467 const struct cred *old, 468 const kernel_cap_t *effective, 469 const kernel_cap_t *inheritable, 470 const kernel_cap_t *permitted) 471 { 472 return cap_capset(new, old, effective, inheritable, permitted); 473 } 474 475 static inline int security_capable(const struct cred *cred, 476 struct user_namespace *ns, 477 int cap, 478 unsigned int opts) 479 { 480 return cap_capable(cred, ns, cap, opts); 481 } 482 483 static inline int security_quotactl(int cmds, int type, int id, 484 struct super_block *sb) 485 { 486 return 0; 487 } 488 489 static inline int security_quota_on(struct dentry *dentry) 490 { 491 return 0; 492 } 493 494 static inline int security_syslog(int type) 495 { 496 return 0; 497 } 498 499 static inline int security_settime64(const struct timespec64 *ts, 500 const struct timezone *tz) 501 { 502 return cap_settime(ts, tz); 503 } 504 505 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 506 { 507 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 508 } 509 510 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 511 { 512 return cap_bprm_set_creds(bprm); 513 } 514 515 static inline int security_bprm_check(struct linux_binprm *bprm) 516 { 517 return 0; 518 } 519 520 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 521 { 522 } 523 524 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 525 { 526 } 527 528 static inline int security_fs_context_dup(struct fs_context *fc, 529 struct fs_context *src_fc) 530 { 531 return 0; 532 } 533 static inline int security_fs_context_parse_param(struct fs_context *fc, 534 struct fs_parameter *param) 535 { 536 return -ENOPARAM; 537 } 538 539 static inline int security_sb_alloc(struct super_block *sb) 540 { 541 return 0; 542 } 543 544 static inline void security_sb_free(struct super_block *sb) 545 { } 546 547 static inline int security_sb_eat_lsm_opts(char *options, 548 void **mnt_opts) 549 { 550 return 0; 551 } 552 553 static inline int security_sb_remount(struct super_block *sb, 554 void *mnt_opts) 555 { 556 return 0; 557 } 558 559 static inline int security_sb_kern_mount(struct super_block *sb) 560 { 561 return 0; 562 } 563 564 static inline int security_sb_show_options(struct seq_file *m, 565 struct super_block *sb) 566 { 567 return 0; 568 } 569 570 static inline int security_sb_statfs(struct dentry *dentry) 571 { 572 return 0; 573 } 574 575 static inline int security_sb_mount(const char *dev_name, const struct path *path, 576 const char *type, unsigned long flags, 577 void *data) 578 { 579 return 0; 580 } 581 582 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 583 { 584 return 0; 585 } 586 587 static inline int security_sb_pivotroot(const struct path *old_path, 588 const struct path *new_path) 589 { 590 return 0; 591 } 592 593 static inline int security_sb_set_mnt_opts(struct super_block *sb, 594 void *mnt_opts, 595 unsigned long kern_flags, 596 unsigned long *set_kern_flags) 597 { 598 return 0; 599 } 600 601 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 602 struct super_block *newsb, 603 unsigned long kern_flags, 604 unsigned long *set_kern_flags) 605 { 606 return 0; 607 } 608 609 static inline int security_add_mnt_opt(const char *option, const char *val, 610 int len, void **mnt_opts) 611 { 612 return 0; 613 } 614 615 static inline int security_move_mount(const struct path *from_path, 616 const struct path *to_path) 617 { 618 return 0; 619 } 620 621 static inline int security_inode_alloc(struct inode *inode) 622 { 623 return 0; 624 } 625 626 static inline void security_inode_free(struct inode *inode) 627 { } 628 629 static inline int security_dentry_init_security(struct dentry *dentry, 630 int mode, 631 const struct qstr *name, 632 void **ctx, 633 u32 *ctxlen) 634 { 635 return -EOPNOTSUPP; 636 } 637 638 static inline int security_dentry_create_files_as(struct dentry *dentry, 639 int mode, struct qstr *name, 640 const struct cred *old, 641 struct cred *new) 642 { 643 return 0; 644 } 645 646 647 static inline int security_inode_init_security(struct inode *inode, 648 struct inode *dir, 649 const struct qstr *qstr, 650 const initxattrs xattrs, 651 void *fs_data) 652 { 653 return 0; 654 } 655 656 static inline int security_old_inode_init_security(struct inode *inode, 657 struct inode *dir, 658 const struct qstr *qstr, 659 const char **name, 660 void **value, size_t *len) 661 { 662 return -EOPNOTSUPP; 663 } 664 665 static inline int security_inode_create(struct inode *dir, 666 struct dentry *dentry, 667 umode_t mode) 668 { 669 return 0; 670 } 671 672 static inline int security_inode_link(struct dentry *old_dentry, 673 struct inode *dir, 674 struct dentry *new_dentry) 675 { 676 return 0; 677 } 678 679 static inline int security_inode_unlink(struct inode *dir, 680 struct dentry *dentry) 681 { 682 return 0; 683 } 684 685 static inline int security_inode_symlink(struct inode *dir, 686 struct dentry *dentry, 687 const char *old_name) 688 { 689 return 0; 690 } 691 692 static inline int security_inode_mkdir(struct inode *dir, 693 struct dentry *dentry, 694 int mode) 695 { 696 return 0; 697 } 698 699 static inline int security_inode_rmdir(struct inode *dir, 700 struct dentry *dentry) 701 { 702 return 0; 703 } 704 705 static inline int security_inode_mknod(struct inode *dir, 706 struct dentry *dentry, 707 int mode, dev_t dev) 708 { 709 return 0; 710 } 711 712 static inline int security_inode_rename(struct inode *old_dir, 713 struct dentry *old_dentry, 714 struct inode *new_dir, 715 struct dentry *new_dentry, 716 unsigned int flags) 717 { 718 return 0; 719 } 720 721 static inline int security_inode_readlink(struct dentry *dentry) 722 { 723 return 0; 724 } 725 726 static inline int security_inode_follow_link(struct dentry *dentry, 727 struct inode *inode, 728 bool rcu) 729 { 730 return 0; 731 } 732 733 static inline int security_inode_permission(struct inode *inode, int mask) 734 { 735 return 0; 736 } 737 738 static inline int security_inode_setattr(struct dentry *dentry, 739 struct iattr *attr) 740 { 741 return 0; 742 } 743 744 static inline int security_inode_getattr(const struct path *path) 745 { 746 return 0; 747 } 748 749 static inline int security_inode_setxattr(struct dentry *dentry, 750 const char *name, const void *value, size_t size, int flags) 751 { 752 return cap_inode_setxattr(dentry, name, value, size, flags); 753 } 754 755 static inline void security_inode_post_setxattr(struct dentry *dentry, 756 const char *name, const void *value, size_t size, int flags) 757 { } 758 759 static inline int security_inode_getxattr(struct dentry *dentry, 760 const char *name) 761 { 762 return 0; 763 } 764 765 static inline int security_inode_listxattr(struct dentry *dentry) 766 { 767 return 0; 768 } 769 770 static inline int security_inode_removexattr(struct dentry *dentry, 771 const char *name) 772 { 773 return cap_inode_removexattr(dentry, name); 774 } 775 776 static inline int security_inode_need_killpriv(struct dentry *dentry) 777 { 778 return cap_inode_need_killpriv(dentry); 779 } 780 781 static inline int security_inode_killpriv(struct dentry *dentry) 782 { 783 return cap_inode_killpriv(dentry); 784 } 785 786 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 787 { 788 return -EOPNOTSUPP; 789 } 790 791 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 792 { 793 return -EOPNOTSUPP; 794 } 795 796 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 797 { 798 return 0; 799 } 800 801 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 802 { 803 *secid = 0; 804 } 805 806 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 807 { 808 return 0; 809 } 810 811 static inline int security_inode_copy_up_xattr(const char *name) 812 { 813 return -EOPNOTSUPP; 814 } 815 816 static inline int security_file_permission(struct file *file, int mask) 817 { 818 return 0; 819 } 820 821 static inline int security_file_alloc(struct file *file) 822 { 823 return 0; 824 } 825 826 static inline void security_file_free(struct file *file) 827 { } 828 829 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 830 unsigned long arg) 831 { 832 return 0; 833 } 834 835 static inline int security_mmap_file(struct file *file, unsigned long prot, 836 unsigned long flags) 837 { 838 return 0; 839 } 840 841 static inline int security_mmap_addr(unsigned long addr) 842 { 843 return cap_mmap_addr(addr); 844 } 845 846 static inline int security_file_mprotect(struct vm_area_struct *vma, 847 unsigned long reqprot, 848 unsigned long prot) 849 { 850 return 0; 851 } 852 853 static inline int security_file_lock(struct file *file, unsigned int cmd) 854 { 855 return 0; 856 } 857 858 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 859 unsigned long arg) 860 { 861 return 0; 862 } 863 864 static inline void security_file_set_fowner(struct file *file) 865 { 866 return; 867 } 868 869 static inline int security_file_send_sigiotask(struct task_struct *tsk, 870 struct fown_struct *fown, 871 int sig) 872 { 873 return 0; 874 } 875 876 static inline int security_file_receive(struct file *file) 877 { 878 return 0; 879 } 880 881 static inline int security_file_open(struct file *file) 882 { 883 return 0; 884 } 885 886 static inline int security_task_alloc(struct task_struct *task, 887 unsigned long clone_flags) 888 { 889 return 0; 890 } 891 892 static inline void security_task_free(struct task_struct *task) 893 { } 894 895 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 896 { 897 return 0; 898 } 899 900 static inline void security_cred_free(struct cred *cred) 901 { } 902 903 static inline int security_prepare_creds(struct cred *new, 904 const struct cred *old, 905 gfp_t gfp) 906 { 907 return 0; 908 } 909 910 static inline void security_transfer_creds(struct cred *new, 911 const struct cred *old) 912 { 913 } 914 915 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 916 { 917 return 0; 918 } 919 920 static inline int security_kernel_create_files_as(struct cred *cred, 921 struct inode *inode) 922 { 923 return 0; 924 } 925 926 static inline int security_kernel_module_request(char *kmod_name) 927 { 928 return 0; 929 } 930 931 static inline int security_kernel_load_data(enum kernel_load_data_id id) 932 { 933 return 0; 934 } 935 936 static inline int security_kernel_read_file(struct file *file, 937 enum kernel_read_file_id id) 938 { 939 return 0; 940 } 941 942 static inline int security_kernel_post_read_file(struct file *file, 943 char *buf, loff_t size, 944 enum kernel_read_file_id id) 945 { 946 return 0; 947 } 948 949 static inline int security_task_fix_setuid(struct cred *new, 950 const struct cred *old, 951 int flags) 952 { 953 return cap_task_fix_setuid(new, old, flags); 954 } 955 956 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 957 { 958 return 0; 959 } 960 961 static inline int security_task_getpgid(struct task_struct *p) 962 { 963 return 0; 964 } 965 966 static inline int security_task_getsid(struct task_struct *p) 967 { 968 return 0; 969 } 970 971 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 972 { 973 *secid = 0; 974 } 975 976 static inline int security_task_setnice(struct task_struct *p, int nice) 977 { 978 return cap_task_setnice(p, nice); 979 } 980 981 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 982 { 983 return cap_task_setioprio(p, ioprio); 984 } 985 986 static inline int security_task_getioprio(struct task_struct *p) 987 { 988 return 0; 989 } 990 991 static inline int security_task_prlimit(const struct cred *cred, 992 const struct cred *tcred, 993 unsigned int flags) 994 { 995 return 0; 996 } 997 998 static inline int security_task_setrlimit(struct task_struct *p, 999 unsigned int resource, 1000 struct rlimit *new_rlim) 1001 { 1002 return 0; 1003 } 1004 1005 static inline int security_task_setscheduler(struct task_struct *p) 1006 { 1007 return cap_task_setscheduler(p); 1008 } 1009 1010 static inline int security_task_getscheduler(struct task_struct *p) 1011 { 1012 return 0; 1013 } 1014 1015 static inline int security_task_movememory(struct task_struct *p) 1016 { 1017 return 0; 1018 } 1019 1020 static inline int security_task_kill(struct task_struct *p, 1021 struct kernel_siginfo *info, int sig, 1022 const struct cred *cred) 1023 { 1024 return 0; 1025 } 1026 1027 static inline int security_task_prctl(int option, unsigned long arg2, 1028 unsigned long arg3, 1029 unsigned long arg4, 1030 unsigned long arg5) 1031 { 1032 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1033 } 1034 1035 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1036 { } 1037 1038 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1039 short flag) 1040 { 1041 return 0; 1042 } 1043 1044 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1045 { 1046 *secid = 0; 1047 } 1048 1049 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1050 { 1051 return 0; 1052 } 1053 1054 static inline void security_msg_msg_free(struct msg_msg *msg) 1055 { } 1056 1057 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1058 { 1059 return 0; 1060 } 1061 1062 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1063 { } 1064 1065 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1066 int msqflg) 1067 { 1068 return 0; 1069 } 1070 1071 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1072 { 1073 return 0; 1074 } 1075 1076 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1077 struct msg_msg *msg, int msqflg) 1078 { 1079 return 0; 1080 } 1081 1082 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1083 struct msg_msg *msg, 1084 struct task_struct *target, 1085 long type, int mode) 1086 { 1087 return 0; 1088 } 1089 1090 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1091 { 1092 return 0; 1093 } 1094 1095 static inline void security_shm_free(struct kern_ipc_perm *shp) 1096 { } 1097 1098 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1099 int shmflg) 1100 { 1101 return 0; 1102 } 1103 1104 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1105 { 1106 return 0; 1107 } 1108 1109 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1110 char __user *shmaddr, int shmflg) 1111 { 1112 return 0; 1113 } 1114 1115 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1116 { 1117 return 0; 1118 } 1119 1120 static inline void security_sem_free(struct kern_ipc_perm *sma) 1121 { } 1122 1123 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1124 { 1125 return 0; 1126 } 1127 1128 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1129 { 1130 return 0; 1131 } 1132 1133 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1134 struct sembuf *sops, unsigned nsops, 1135 int alter) 1136 { 1137 return 0; 1138 } 1139 1140 static inline void security_d_instantiate(struct dentry *dentry, 1141 struct inode *inode) 1142 { } 1143 1144 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1145 char *name, char **value) 1146 { 1147 return -EINVAL; 1148 } 1149 1150 static inline int security_setprocattr(const char *lsm, char *name, 1151 void *value, size_t size) 1152 { 1153 return -EINVAL; 1154 } 1155 1156 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1157 { 1158 return 0; 1159 } 1160 1161 static inline int security_ismaclabel(const char *name) 1162 { 1163 return 0; 1164 } 1165 1166 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1167 { 1168 return -EOPNOTSUPP; 1169 } 1170 1171 static inline int security_secctx_to_secid(const char *secdata, 1172 u32 seclen, 1173 u32 *secid) 1174 { 1175 return -EOPNOTSUPP; 1176 } 1177 1178 static inline void security_release_secctx(char *secdata, u32 seclen) 1179 { 1180 } 1181 1182 static inline void security_inode_invalidate_secctx(struct inode *inode) 1183 { 1184 } 1185 1186 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1187 { 1188 return -EOPNOTSUPP; 1189 } 1190 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1191 { 1192 return -EOPNOTSUPP; 1193 } 1194 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1195 { 1196 return -EOPNOTSUPP; 1197 } 1198 #endif /* CONFIG_SECURITY */ 1199 1200 #ifdef CONFIG_SECURITY_NETWORK 1201 1202 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1203 int security_unix_may_send(struct socket *sock, struct socket *other); 1204 int security_socket_create(int family, int type, int protocol, int kern); 1205 int security_socket_post_create(struct socket *sock, int family, 1206 int type, int protocol, int kern); 1207 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1208 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1209 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1210 int security_socket_listen(struct socket *sock, int backlog); 1211 int security_socket_accept(struct socket *sock, struct socket *newsock); 1212 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1213 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1214 int size, int flags); 1215 int security_socket_getsockname(struct socket *sock); 1216 int security_socket_getpeername(struct socket *sock); 1217 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1218 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1219 int security_socket_shutdown(struct socket *sock, int how); 1220 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1221 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1222 int __user *optlen, unsigned len); 1223 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1224 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1225 void security_sk_free(struct sock *sk); 1226 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1227 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1228 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1229 void security_sock_graft(struct sock*sk, struct socket *parent); 1230 int security_inet_conn_request(struct sock *sk, 1231 struct sk_buff *skb, struct request_sock *req); 1232 void security_inet_csk_clone(struct sock *newsk, 1233 const struct request_sock *req); 1234 void security_inet_conn_established(struct sock *sk, 1235 struct sk_buff *skb); 1236 int security_secmark_relabel_packet(u32 secid); 1237 void security_secmark_refcount_inc(void); 1238 void security_secmark_refcount_dec(void); 1239 int security_tun_dev_alloc_security(void **security); 1240 void security_tun_dev_free_security(void *security); 1241 int security_tun_dev_create(void); 1242 int security_tun_dev_attach_queue(void *security); 1243 int security_tun_dev_attach(struct sock *sk, void *security); 1244 int security_tun_dev_open(void *security); 1245 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1246 int security_sctp_bind_connect(struct sock *sk, int optname, 1247 struct sockaddr *address, int addrlen); 1248 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1249 struct sock *newsk); 1250 1251 #else /* CONFIG_SECURITY_NETWORK */ 1252 static inline int security_unix_stream_connect(struct sock *sock, 1253 struct sock *other, 1254 struct sock *newsk) 1255 { 1256 return 0; 1257 } 1258 1259 static inline int security_unix_may_send(struct socket *sock, 1260 struct socket *other) 1261 { 1262 return 0; 1263 } 1264 1265 static inline int security_socket_create(int family, int type, 1266 int protocol, int kern) 1267 { 1268 return 0; 1269 } 1270 1271 static inline int security_socket_post_create(struct socket *sock, 1272 int family, 1273 int type, 1274 int protocol, int kern) 1275 { 1276 return 0; 1277 } 1278 1279 static inline int security_socket_socketpair(struct socket *socka, 1280 struct socket *sockb) 1281 { 1282 return 0; 1283 } 1284 1285 static inline int security_socket_bind(struct socket *sock, 1286 struct sockaddr *address, 1287 int addrlen) 1288 { 1289 return 0; 1290 } 1291 1292 static inline int security_socket_connect(struct socket *sock, 1293 struct sockaddr *address, 1294 int addrlen) 1295 { 1296 return 0; 1297 } 1298 1299 static inline int security_socket_listen(struct socket *sock, int backlog) 1300 { 1301 return 0; 1302 } 1303 1304 static inline int security_socket_accept(struct socket *sock, 1305 struct socket *newsock) 1306 { 1307 return 0; 1308 } 1309 1310 static inline int security_socket_sendmsg(struct socket *sock, 1311 struct msghdr *msg, int size) 1312 { 1313 return 0; 1314 } 1315 1316 static inline int security_socket_recvmsg(struct socket *sock, 1317 struct msghdr *msg, int size, 1318 int flags) 1319 { 1320 return 0; 1321 } 1322 1323 static inline int security_socket_getsockname(struct socket *sock) 1324 { 1325 return 0; 1326 } 1327 1328 static inline int security_socket_getpeername(struct socket *sock) 1329 { 1330 return 0; 1331 } 1332 1333 static inline int security_socket_getsockopt(struct socket *sock, 1334 int level, int optname) 1335 { 1336 return 0; 1337 } 1338 1339 static inline int security_socket_setsockopt(struct socket *sock, 1340 int level, int optname) 1341 { 1342 return 0; 1343 } 1344 1345 static inline int security_socket_shutdown(struct socket *sock, int how) 1346 { 1347 return 0; 1348 } 1349 static inline int security_sock_rcv_skb(struct sock *sk, 1350 struct sk_buff *skb) 1351 { 1352 return 0; 1353 } 1354 1355 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1356 int __user *optlen, unsigned len) 1357 { 1358 return -ENOPROTOOPT; 1359 } 1360 1361 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1362 { 1363 return -ENOPROTOOPT; 1364 } 1365 1366 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1367 { 1368 return 0; 1369 } 1370 1371 static inline void security_sk_free(struct sock *sk) 1372 { 1373 } 1374 1375 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1376 { 1377 } 1378 1379 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1380 { 1381 } 1382 1383 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1384 { 1385 } 1386 1387 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1388 { 1389 } 1390 1391 static inline int security_inet_conn_request(struct sock *sk, 1392 struct sk_buff *skb, struct request_sock *req) 1393 { 1394 return 0; 1395 } 1396 1397 static inline void security_inet_csk_clone(struct sock *newsk, 1398 const struct request_sock *req) 1399 { 1400 } 1401 1402 static inline void security_inet_conn_established(struct sock *sk, 1403 struct sk_buff *skb) 1404 { 1405 } 1406 1407 static inline int security_secmark_relabel_packet(u32 secid) 1408 { 1409 return 0; 1410 } 1411 1412 static inline void security_secmark_refcount_inc(void) 1413 { 1414 } 1415 1416 static inline void security_secmark_refcount_dec(void) 1417 { 1418 } 1419 1420 static inline int security_tun_dev_alloc_security(void **security) 1421 { 1422 return 0; 1423 } 1424 1425 static inline void security_tun_dev_free_security(void *security) 1426 { 1427 } 1428 1429 static inline int security_tun_dev_create(void) 1430 { 1431 return 0; 1432 } 1433 1434 static inline int security_tun_dev_attach_queue(void *security) 1435 { 1436 return 0; 1437 } 1438 1439 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1440 { 1441 return 0; 1442 } 1443 1444 static inline int security_tun_dev_open(void *security) 1445 { 1446 return 0; 1447 } 1448 1449 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1450 struct sk_buff *skb) 1451 { 1452 return 0; 1453 } 1454 1455 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1456 struct sockaddr *address, 1457 int addrlen) 1458 { 1459 return 0; 1460 } 1461 1462 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1463 struct sock *sk, 1464 struct sock *newsk) 1465 { 1466 } 1467 #endif /* CONFIG_SECURITY_NETWORK */ 1468 1469 #ifdef CONFIG_SECURITY_INFINIBAND 1470 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1471 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1472 int security_ib_alloc_security(void **sec); 1473 void security_ib_free_security(void *sec); 1474 #else /* CONFIG_SECURITY_INFINIBAND */ 1475 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1476 { 1477 return 0; 1478 } 1479 1480 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1481 { 1482 return 0; 1483 } 1484 1485 static inline int security_ib_alloc_security(void **sec) 1486 { 1487 return 0; 1488 } 1489 1490 static inline void security_ib_free_security(void *sec) 1491 { 1492 } 1493 #endif /* CONFIG_SECURITY_INFINIBAND */ 1494 1495 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1496 1497 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1498 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1499 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1500 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1501 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1502 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1503 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1504 struct xfrm_sec_ctx *polsec, u32 secid); 1505 int security_xfrm_state_delete(struct xfrm_state *x); 1506 void security_xfrm_state_free(struct xfrm_state *x); 1507 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1508 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1509 struct xfrm_policy *xp, 1510 const struct flowi *fl); 1511 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1512 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1513 1514 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1515 1516 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1517 struct xfrm_user_sec_ctx *sec_ctx, 1518 gfp_t gfp) 1519 { 1520 return 0; 1521 } 1522 1523 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1524 { 1525 return 0; 1526 } 1527 1528 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1529 { 1530 } 1531 1532 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1533 { 1534 return 0; 1535 } 1536 1537 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1538 struct xfrm_user_sec_ctx *sec_ctx) 1539 { 1540 return 0; 1541 } 1542 1543 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1544 struct xfrm_sec_ctx *polsec, u32 secid) 1545 { 1546 return 0; 1547 } 1548 1549 static inline void security_xfrm_state_free(struct xfrm_state *x) 1550 { 1551 } 1552 1553 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1554 { 1555 return 0; 1556 } 1557 1558 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1559 { 1560 return 0; 1561 } 1562 1563 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1564 struct xfrm_policy *xp, const struct flowi *fl) 1565 { 1566 return 1; 1567 } 1568 1569 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1570 { 1571 return 0; 1572 } 1573 1574 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1575 { 1576 } 1577 1578 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1579 1580 #ifdef CONFIG_SECURITY_PATH 1581 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1582 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1583 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1584 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1585 unsigned int dev); 1586 int security_path_truncate(const struct path *path); 1587 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1588 const char *old_name); 1589 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1590 struct dentry *new_dentry); 1591 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1592 const struct path *new_dir, struct dentry *new_dentry, 1593 unsigned int flags); 1594 int security_path_chmod(const struct path *path, umode_t mode); 1595 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1596 int security_path_chroot(const struct path *path); 1597 #else /* CONFIG_SECURITY_PATH */ 1598 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1599 { 1600 return 0; 1601 } 1602 1603 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1604 umode_t mode) 1605 { 1606 return 0; 1607 } 1608 1609 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1610 { 1611 return 0; 1612 } 1613 1614 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1615 umode_t mode, unsigned int dev) 1616 { 1617 return 0; 1618 } 1619 1620 static inline int security_path_truncate(const struct path *path) 1621 { 1622 return 0; 1623 } 1624 1625 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1626 const char *old_name) 1627 { 1628 return 0; 1629 } 1630 1631 static inline int security_path_link(struct dentry *old_dentry, 1632 const struct path *new_dir, 1633 struct dentry *new_dentry) 1634 { 1635 return 0; 1636 } 1637 1638 static inline int security_path_rename(const struct path *old_dir, 1639 struct dentry *old_dentry, 1640 const struct path *new_dir, 1641 struct dentry *new_dentry, 1642 unsigned int flags) 1643 { 1644 return 0; 1645 } 1646 1647 static inline int security_path_chmod(const struct path *path, umode_t mode) 1648 { 1649 return 0; 1650 } 1651 1652 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1653 { 1654 return 0; 1655 } 1656 1657 static inline int security_path_chroot(const struct path *path) 1658 { 1659 return 0; 1660 } 1661 #endif /* CONFIG_SECURITY_PATH */ 1662 1663 #ifdef CONFIG_KEYS 1664 #ifdef CONFIG_SECURITY 1665 1666 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1667 void security_key_free(struct key *key); 1668 int security_key_permission(key_ref_t key_ref, 1669 const struct cred *cred, unsigned perm); 1670 int security_key_getsecurity(struct key *key, char **_buffer); 1671 1672 #else 1673 1674 static inline int security_key_alloc(struct key *key, 1675 const struct cred *cred, 1676 unsigned long flags) 1677 { 1678 return 0; 1679 } 1680 1681 static inline void security_key_free(struct key *key) 1682 { 1683 } 1684 1685 static inline int security_key_permission(key_ref_t key_ref, 1686 const struct cred *cred, 1687 unsigned perm) 1688 { 1689 return 0; 1690 } 1691 1692 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1693 { 1694 *_buffer = NULL; 1695 return 0; 1696 } 1697 1698 #endif 1699 #endif /* CONFIG_KEYS */ 1700 1701 #ifdef CONFIG_AUDIT 1702 #ifdef CONFIG_SECURITY 1703 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1704 int security_audit_rule_known(struct audit_krule *krule); 1705 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1706 void security_audit_rule_free(void *lsmrule); 1707 1708 #else 1709 1710 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1711 void **lsmrule) 1712 { 1713 return 0; 1714 } 1715 1716 static inline int security_audit_rule_known(struct audit_krule *krule) 1717 { 1718 return 0; 1719 } 1720 1721 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1722 void *lsmrule) 1723 { 1724 return 0; 1725 } 1726 1727 static inline void security_audit_rule_free(void *lsmrule) 1728 { } 1729 1730 #endif /* CONFIG_SECURITY */ 1731 #endif /* CONFIG_AUDIT */ 1732 1733 #ifdef CONFIG_SECURITYFS 1734 1735 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1736 struct dentry *parent, void *data, 1737 const struct file_operations *fops); 1738 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1739 struct dentry *securityfs_create_symlink(const char *name, 1740 struct dentry *parent, 1741 const char *target, 1742 const struct inode_operations *iops); 1743 extern void securityfs_remove(struct dentry *dentry); 1744 1745 #else /* CONFIG_SECURITYFS */ 1746 1747 static inline struct dentry *securityfs_create_dir(const char *name, 1748 struct dentry *parent) 1749 { 1750 return ERR_PTR(-ENODEV); 1751 } 1752 1753 static inline struct dentry *securityfs_create_file(const char *name, 1754 umode_t mode, 1755 struct dentry *parent, 1756 void *data, 1757 const struct file_operations *fops) 1758 { 1759 return ERR_PTR(-ENODEV); 1760 } 1761 1762 static inline struct dentry *securityfs_create_symlink(const char *name, 1763 struct dentry *parent, 1764 const char *target, 1765 const struct inode_operations *iops) 1766 { 1767 return ERR_PTR(-ENODEV); 1768 } 1769 1770 static inline void securityfs_remove(struct dentry *dentry) 1771 {} 1772 1773 #endif 1774 1775 #ifdef CONFIG_BPF_SYSCALL 1776 union bpf_attr; 1777 struct bpf_map; 1778 struct bpf_prog; 1779 struct bpf_prog_aux; 1780 #ifdef CONFIG_SECURITY 1781 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1782 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1783 extern int security_bpf_prog(struct bpf_prog *prog); 1784 extern int security_bpf_map_alloc(struct bpf_map *map); 1785 extern void security_bpf_map_free(struct bpf_map *map); 1786 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1787 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1788 #else 1789 static inline int security_bpf(int cmd, union bpf_attr *attr, 1790 unsigned int size) 1791 { 1792 return 0; 1793 } 1794 1795 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1796 { 1797 return 0; 1798 } 1799 1800 static inline int security_bpf_prog(struct bpf_prog *prog) 1801 { 1802 return 0; 1803 } 1804 1805 static inline int security_bpf_map_alloc(struct bpf_map *map) 1806 { 1807 return 0; 1808 } 1809 1810 static inline void security_bpf_map_free(struct bpf_map *map) 1811 { } 1812 1813 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1814 { 1815 return 0; 1816 } 1817 1818 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1819 { } 1820 #endif /* CONFIG_SECURITY */ 1821 #endif /* CONFIG_BPF_SYSCALL */ 1822 1823 #endif /* ! __LINUX_SECURITY_H */ 1824 1825