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