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 kernfs_node; 55 struct xfrm_sec_ctx; 56 struct mm_struct; 57 struct fs_context; 58 struct fs_parameter; 59 enum fs_value_type; 60 61 /* Default (no) options for the capable function */ 62 #define CAP_OPT_NONE 0x0 63 /* If capable should audit the security request */ 64 #define CAP_OPT_NOAUDIT BIT(1) 65 /* If capable is being called by a setid function */ 66 #define CAP_OPT_INSETID BIT(2) 67 68 /* LSM Agnostic defines for fs_context::lsm_flags */ 69 #define SECURITY_LSM_NATIVE_LABELS 1 70 71 struct ctl_table; 72 struct audit_krule; 73 struct user_namespace; 74 struct timezone; 75 76 enum lsm_event { 77 LSM_POLICY_CHANGE, 78 }; 79 80 /* These functions are in security/commoncap.c */ 81 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 82 int cap, unsigned int opts); 83 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 84 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 85 extern int cap_ptrace_traceme(struct task_struct *parent); 86 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 87 extern int cap_capset(struct cred *new, const struct cred *old, 88 const kernel_cap_t *effective, 89 const kernel_cap_t *inheritable, 90 const kernel_cap_t *permitted); 91 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 92 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 93 const void *value, size_t size, int flags); 94 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 95 extern int cap_inode_need_killpriv(struct dentry *dentry); 96 extern int cap_inode_killpriv(struct dentry *dentry); 97 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 98 void **buffer, bool alloc); 99 extern int cap_mmap_addr(unsigned long addr); 100 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 101 unsigned long prot, unsigned long flags); 102 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 103 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 104 unsigned long arg4, unsigned long arg5); 105 extern int cap_task_setscheduler(struct task_struct *p); 106 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 107 extern int cap_task_setnice(struct task_struct *p, int nice); 108 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 109 110 struct msghdr; 111 struct sk_buff; 112 struct sock; 113 struct sockaddr; 114 struct socket; 115 struct flowi; 116 struct dst_entry; 117 struct xfrm_selector; 118 struct xfrm_policy; 119 struct xfrm_state; 120 struct xfrm_user_sec_ctx; 121 struct seq_file; 122 struct sctp_endpoint; 123 124 #ifdef CONFIG_MMU 125 extern unsigned long mmap_min_addr; 126 extern unsigned long dac_mmap_min_addr; 127 #else 128 #define mmap_min_addr 0UL 129 #define dac_mmap_min_addr 0UL 130 #endif 131 132 /* 133 * Values used in the task_security_ops calls 134 */ 135 /* setuid or setgid, id0 == uid or gid */ 136 #define LSM_SETID_ID 1 137 138 /* setreuid or setregid, id0 == real, id1 == eff */ 139 #define LSM_SETID_RE 2 140 141 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 142 #define LSM_SETID_RES 4 143 144 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 145 #define LSM_SETID_FS 8 146 147 /* Flags for security_task_prlimit(). */ 148 #define LSM_PRLIMIT_READ 1 149 #define LSM_PRLIMIT_WRITE 2 150 151 /* forward declares to avoid warnings */ 152 struct sched_param; 153 struct request_sock; 154 155 /* bprm->unsafe reasons */ 156 #define LSM_UNSAFE_SHARE 1 157 #define LSM_UNSAFE_PTRACE 2 158 #define LSM_UNSAFE_NO_NEW_PRIVS 4 159 160 #ifdef CONFIG_MMU 161 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 162 void __user *buffer, size_t *lenp, loff_t *ppos); 163 #endif 164 165 /* security_inode_init_security callback function to write xattrs */ 166 typedef int (*initxattrs) (struct inode *inode, 167 const struct xattr *xattr_array, void *fs_data); 168 169 170 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 171 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 172 #define __data_id_stringify(dummy, str) #str, 173 174 enum kernel_load_data_id { 175 __kernel_read_file_id(__data_id_enumify) 176 }; 177 178 static const char * const kernel_load_data_str[] = { 179 __kernel_read_file_id(__data_id_stringify) 180 }; 181 182 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 183 { 184 if ((unsigned)id >= LOADING_MAX_ID) 185 return kernel_load_data_str[LOADING_UNKNOWN]; 186 187 return kernel_load_data_str[id]; 188 } 189 190 #ifdef CONFIG_SECURITY 191 192 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 193 int register_blocking_lsm_notifier(struct notifier_block *nb); 194 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 195 196 /* prototypes */ 197 extern int security_init(void); 198 199 /* Security operations */ 200 int security_binder_set_context_mgr(struct task_struct *mgr); 201 int security_binder_transaction(struct task_struct *from, 202 struct task_struct *to); 203 int security_binder_transfer_binder(struct task_struct *from, 204 struct task_struct *to); 205 int security_binder_transfer_file(struct task_struct *from, 206 struct task_struct *to, struct file *file); 207 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 208 int security_ptrace_traceme(struct task_struct *parent); 209 int security_capget(struct task_struct *target, 210 kernel_cap_t *effective, 211 kernel_cap_t *inheritable, 212 kernel_cap_t *permitted); 213 int security_capset(struct cred *new, const struct cred *old, 214 const kernel_cap_t *effective, 215 const kernel_cap_t *inheritable, 216 const kernel_cap_t *permitted); 217 int security_capable(const struct cred *cred, 218 struct user_namespace *ns, 219 int cap, 220 unsigned int opts); 221 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 222 int security_quota_on(struct dentry *dentry); 223 int security_syslog(int type); 224 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 225 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 226 int security_bprm_set_creds(struct linux_binprm *bprm); 227 int security_bprm_check(struct linux_binprm *bprm); 228 void security_bprm_committing_creds(struct linux_binprm *bprm); 229 void security_bprm_committed_creds(struct linux_binprm *bprm); 230 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 231 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 232 int security_sb_alloc(struct super_block *sb); 233 void security_sb_free(struct super_block *sb); 234 void security_free_mnt_opts(void **mnt_opts); 235 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 236 int security_sb_remount(struct super_block *sb, void *mnt_opts); 237 int security_sb_kern_mount(struct super_block *sb); 238 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 239 int security_sb_statfs(struct dentry *dentry); 240 int security_sb_mount(const char *dev_name, const struct path *path, 241 const char *type, unsigned long flags, void *data); 242 int security_sb_umount(struct vfsmount *mnt, int flags); 243 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 244 int security_sb_set_mnt_opts(struct super_block *sb, 245 void *mnt_opts, 246 unsigned long kern_flags, 247 unsigned long *set_kern_flags); 248 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 249 struct super_block *newsb, 250 unsigned long kern_flags, 251 unsigned long *set_kern_flags); 252 int security_add_mnt_opt(const char *option, const char *val, 253 int len, void **mnt_opts); 254 int security_move_mount(const struct path *from_path, const struct path *to_path); 255 int security_dentry_init_security(struct dentry *dentry, int mode, 256 const struct qstr *name, void **ctx, 257 u32 *ctxlen); 258 int security_dentry_create_files_as(struct dentry *dentry, int mode, 259 struct qstr *name, 260 const struct cred *old, 261 struct cred *new); 262 263 int security_inode_alloc(struct inode *inode); 264 void security_inode_free(struct inode *inode); 265 int security_inode_init_security(struct inode *inode, struct inode *dir, 266 const struct qstr *qstr, 267 initxattrs initxattrs, void *fs_data); 268 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 269 const struct qstr *qstr, const char **name, 270 void **value, size_t *len); 271 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 272 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 273 struct dentry *new_dentry); 274 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 275 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 276 const char *old_name); 277 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 278 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 279 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 280 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 281 struct inode *new_dir, struct dentry *new_dentry, 282 unsigned int flags); 283 int security_inode_readlink(struct dentry *dentry); 284 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 285 bool rcu); 286 int security_inode_permission(struct inode *inode, int mask); 287 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 288 int security_inode_getattr(const struct path *path); 289 int security_inode_setxattr(struct dentry *dentry, const char *name, 290 const void *value, size_t size, int flags); 291 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 292 const void *value, size_t size, int flags); 293 int security_inode_getxattr(struct dentry *dentry, const char *name); 294 int security_inode_listxattr(struct dentry *dentry); 295 int security_inode_removexattr(struct dentry *dentry, const char *name); 296 int security_inode_need_killpriv(struct dentry *dentry); 297 int security_inode_killpriv(struct dentry *dentry); 298 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 299 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 300 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 301 void security_inode_getsecid(struct inode *inode, u32 *secid); 302 int security_inode_copy_up(struct dentry *src, struct cred **new); 303 int security_inode_copy_up_xattr(const char *name); 304 int security_kernfs_init_security(struct kernfs_node *kn_dir, 305 struct kernfs_node *kn); 306 int security_file_permission(struct file *file, int mask); 307 int security_file_alloc(struct file *file); 308 void security_file_free(struct file *file); 309 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 310 int security_mmap_file(struct file *file, unsigned long prot, 311 unsigned long flags); 312 int security_mmap_addr(unsigned long addr); 313 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 314 unsigned long prot); 315 int security_file_lock(struct file *file, unsigned int cmd); 316 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 317 void security_file_set_fowner(struct file *file); 318 int security_file_send_sigiotask(struct task_struct *tsk, 319 struct fown_struct *fown, int sig); 320 int security_file_receive(struct file *file); 321 int security_file_open(struct file *file); 322 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 323 void security_task_free(struct task_struct *task); 324 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 325 void security_cred_free(struct cred *cred); 326 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 327 void security_transfer_creds(struct cred *new, const struct cred *old); 328 void security_cred_getsecid(const struct cred *c, u32 *secid); 329 int security_kernel_act_as(struct cred *new, u32 secid); 330 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 331 int security_kernel_module_request(char *kmod_name); 332 int security_kernel_load_data(enum kernel_load_data_id id); 333 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 334 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 335 enum kernel_read_file_id id); 336 int security_task_fix_setuid(struct cred *new, const struct cred *old, 337 int flags); 338 int security_task_setpgid(struct task_struct *p, pid_t pgid); 339 int security_task_getpgid(struct task_struct *p); 340 int security_task_getsid(struct task_struct *p); 341 void security_task_getsecid(struct task_struct *p, u32 *secid); 342 int security_task_setnice(struct task_struct *p, int nice); 343 int security_task_setioprio(struct task_struct *p, int ioprio); 344 int security_task_getioprio(struct task_struct *p); 345 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 346 unsigned int flags); 347 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 348 struct rlimit *new_rlim); 349 int security_task_setscheduler(struct task_struct *p); 350 int security_task_getscheduler(struct task_struct *p); 351 int security_task_movememory(struct task_struct *p); 352 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 353 int sig, const struct cred *cred); 354 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 355 unsigned long arg4, unsigned long arg5); 356 void security_task_to_inode(struct task_struct *p, struct inode *inode); 357 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 358 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 359 int security_msg_msg_alloc(struct msg_msg *msg); 360 void security_msg_msg_free(struct msg_msg *msg); 361 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 362 void security_msg_queue_free(struct kern_ipc_perm *msq); 363 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 364 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 365 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 366 struct msg_msg *msg, int msqflg); 367 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 368 struct task_struct *target, long type, int mode); 369 int security_shm_alloc(struct kern_ipc_perm *shp); 370 void security_shm_free(struct kern_ipc_perm *shp); 371 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 372 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 373 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 374 int security_sem_alloc(struct kern_ipc_perm *sma); 375 void security_sem_free(struct kern_ipc_perm *sma); 376 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 377 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 378 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 379 unsigned nsops, int alter); 380 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 381 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 382 char **value); 383 int security_setprocattr(const char *lsm, const char *name, void *value, 384 size_t size); 385 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 386 int security_ismaclabel(const char *name); 387 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 388 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 389 void security_release_secctx(char *secdata, u32 seclen); 390 391 void security_inode_invalidate_secctx(struct inode *inode); 392 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 393 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 394 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 395 #else /* CONFIG_SECURITY */ 396 397 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 398 { 399 return 0; 400 } 401 402 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 403 { 404 return 0; 405 } 406 407 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 408 { 409 return 0; 410 } 411 412 static inline void security_free_mnt_opts(void **mnt_opts) 413 { 414 } 415 416 /* 417 * This is the default capabilities functionality. Most of these functions 418 * are just stubbed out, but a few must call the proper capable code. 419 */ 420 421 static inline int security_init(void) 422 { 423 return 0; 424 } 425 426 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 427 { 428 return 0; 429 } 430 431 static inline int security_binder_transaction(struct task_struct *from, 432 struct task_struct *to) 433 { 434 return 0; 435 } 436 437 static inline int security_binder_transfer_binder(struct task_struct *from, 438 struct task_struct *to) 439 { 440 return 0; 441 } 442 443 static inline int security_binder_transfer_file(struct task_struct *from, 444 struct task_struct *to, 445 struct file *file) 446 { 447 return 0; 448 } 449 450 static inline int security_ptrace_access_check(struct task_struct *child, 451 unsigned int mode) 452 { 453 return cap_ptrace_access_check(child, mode); 454 } 455 456 static inline int security_ptrace_traceme(struct task_struct *parent) 457 { 458 return cap_ptrace_traceme(parent); 459 } 460 461 static inline int security_capget(struct task_struct *target, 462 kernel_cap_t *effective, 463 kernel_cap_t *inheritable, 464 kernel_cap_t *permitted) 465 { 466 return cap_capget(target, effective, inheritable, permitted); 467 } 468 469 static inline int security_capset(struct cred *new, 470 const struct cred *old, 471 const kernel_cap_t *effective, 472 const kernel_cap_t *inheritable, 473 const kernel_cap_t *permitted) 474 { 475 return cap_capset(new, old, effective, inheritable, permitted); 476 } 477 478 static inline int security_capable(const struct cred *cred, 479 struct user_namespace *ns, 480 int cap, 481 unsigned int opts) 482 { 483 return cap_capable(cred, ns, cap, opts); 484 } 485 486 static inline int security_quotactl(int cmds, int type, int id, 487 struct super_block *sb) 488 { 489 return 0; 490 } 491 492 static inline int security_quota_on(struct dentry *dentry) 493 { 494 return 0; 495 } 496 497 static inline int security_syslog(int type) 498 { 499 return 0; 500 } 501 502 static inline int security_settime64(const struct timespec64 *ts, 503 const struct timezone *tz) 504 { 505 return cap_settime(ts, tz); 506 } 507 508 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 509 { 510 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 511 } 512 513 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 514 { 515 return cap_bprm_set_creds(bprm); 516 } 517 518 static inline int security_bprm_check(struct linux_binprm *bprm) 519 { 520 return 0; 521 } 522 523 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 524 { 525 } 526 527 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 528 { 529 } 530 531 static inline int security_fs_context_dup(struct fs_context *fc, 532 struct fs_context *src_fc) 533 { 534 return 0; 535 } 536 static inline int security_fs_context_parse_param(struct fs_context *fc, 537 struct fs_parameter *param) 538 { 539 return -ENOPARAM; 540 } 541 542 static inline int security_sb_alloc(struct super_block *sb) 543 { 544 return 0; 545 } 546 547 static inline void security_sb_free(struct super_block *sb) 548 { } 549 550 static inline int security_sb_eat_lsm_opts(char *options, 551 void **mnt_opts) 552 { 553 return 0; 554 } 555 556 static inline int security_sb_remount(struct super_block *sb, 557 void *mnt_opts) 558 { 559 return 0; 560 } 561 562 static inline int security_sb_kern_mount(struct super_block *sb) 563 { 564 return 0; 565 } 566 567 static inline int security_sb_show_options(struct seq_file *m, 568 struct super_block *sb) 569 { 570 return 0; 571 } 572 573 static inline int security_sb_statfs(struct dentry *dentry) 574 { 575 return 0; 576 } 577 578 static inline int security_sb_mount(const char *dev_name, const struct path *path, 579 const char *type, unsigned long flags, 580 void *data) 581 { 582 return 0; 583 } 584 585 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 586 { 587 return 0; 588 } 589 590 static inline int security_sb_pivotroot(const struct path *old_path, 591 const struct path *new_path) 592 { 593 return 0; 594 } 595 596 static inline int security_sb_set_mnt_opts(struct super_block *sb, 597 void *mnt_opts, 598 unsigned long kern_flags, 599 unsigned long *set_kern_flags) 600 { 601 return 0; 602 } 603 604 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 605 struct super_block *newsb, 606 unsigned long kern_flags, 607 unsigned long *set_kern_flags) 608 { 609 return 0; 610 } 611 612 static inline int security_add_mnt_opt(const char *option, const char *val, 613 int len, void **mnt_opts) 614 { 615 return 0; 616 } 617 618 static inline int security_move_mount(const struct path *from_path, 619 const struct path *to_path) 620 { 621 return 0; 622 } 623 624 static inline int security_inode_alloc(struct inode *inode) 625 { 626 return 0; 627 } 628 629 static inline void security_inode_free(struct inode *inode) 630 { } 631 632 static inline int security_dentry_init_security(struct dentry *dentry, 633 int mode, 634 const struct qstr *name, 635 void **ctx, 636 u32 *ctxlen) 637 { 638 return -EOPNOTSUPP; 639 } 640 641 static inline int security_dentry_create_files_as(struct dentry *dentry, 642 int mode, struct qstr *name, 643 const struct cred *old, 644 struct cred *new) 645 { 646 return 0; 647 } 648 649 650 static inline int security_inode_init_security(struct inode *inode, 651 struct inode *dir, 652 const struct qstr *qstr, 653 const initxattrs xattrs, 654 void *fs_data) 655 { 656 return 0; 657 } 658 659 static inline int security_old_inode_init_security(struct inode *inode, 660 struct inode *dir, 661 const struct qstr *qstr, 662 const char **name, 663 void **value, size_t *len) 664 { 665 return -EOPNOTSUPP; 666 } 667 668 static inline int security_inode_create(struct inode *dir, 669 struct dentry *dentry, 670 umode_t mode) 671 { 672 return 0; 673 } 674 675 static inline int security_inode_link(struct dentry *old_dentry, 676 struct inode *dir, 677 struct dentry *new_dentry) 678 { 679 return 0; 680 } 681 682 static inline int security_inode_unlink(struct inode *dir, 683 struct dentry *dentry) 684 { 685 return 0; 686 } 687 688 static inline int security_inode_symlink(struct inode *dir, 689 struct dentry *dentry, 690 const char *old_name) 691 { 692 return 0; 693 } 694 695 static inline int security_inode_mkdir(struct inode *dir, 696 struct dentry *dentry, 697 int mode) 698 { 699 return 0; 700 } 701 702 static inline int security_inode_rmdir(struct inode *dir, 703 struct dentry *dentry) 704 { 705 return 0; 706 } 707 708 static inline int security_inode_mknod(struct inode *dir, 709 struct dentry *dentry, 710 int mode, dev_t dev) 711 { 712 return 0; 713 } 714 715 static inline int security_inode_rename(struct inode *old_dir, 716 struct dentry *old_dentry, 717 struct inode *new_dir, 718 struct dentry *new_dentry, 719 unsigned int flags) 720 { 721 return 0; 722 } 723 724 static inline int security_inode_readlink(struct dentry *dentry) 725 { 726 return 0; 727 } 728 729 static inline int security_inode_follow_link(struct dentry *dentry, 730 struct inode *inode, 731 bool rcu) 732 { 733 return 0; 734 } 735 736 static inline int security_inode_permission(struct inode *inode, int mask) 737 { 738 return 0; 739 } 740 741 static inline int security_inode_setattr(struct dentry *dentry, 742 struct iattr *attr) 743 { 744 return 0; 745 } 746 747 static inline int security_inode_getattr(const struct path *path) 748 { 749 return 0; 750 } 751 752 static inline int security_inode_setxattr(struct dentry *dentry, 753 const char *name, const void *value, size_t size, int flags) 754 { 755 return cap_inode_setxattr(dentry, name, value, size, flags); 756 } 757 758 static inline void security_inode_post_setxattr(struct dentry *dentry, 759 const char *name, const void *value, size_t size, int flags) 760 { } 761 762 static inline int security_inode_getxattr(struct dentry *dentry, 763 const char *name) 764 { 765 return 0; 766 } 767 768 static inline int security_inode_listxattr(struct dentry *dentry) 769 { 770 return 0; 771 } 772 773 static inline int security_inode_removexattr(struct dentry *dentry, 774 const char *name) 775 { 776 return cap_inode_removexattr(dentry, name); 777 } 778 779 static inline int security_inode_need_killpriv(struct dentry *dentry) 780 { 781 return cap_inode_need_killpriv(dentry); 782 } 783 784 static inline int security_inode_killpriv(struct dentry *dentry) 785 { 786 return cap_inode_killpriv(dentry); 787 } 788 789 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 790 { 791 return -EOPNOTSUPP; 792 } 793 794 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 795 { 796 return -EOPNOTSUPP; 797 } 798 799 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 800 { 801 return 0; 802 } 803 804 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 805 { 806 *secid = 0; 807 } 808 809 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 810 { 811 return 0; 812 } 813 814 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 815 struct kernfs_node *kn) 816 { 817 return 0; 818 } 819 820 static inline int security_inode_copy_up_xattr(const char *name) 821 { 822 return -EOPNOTSUPP; 823 } 824 825 static inline int security_file_permission(struct file *file, int mask) 826 { 827 return 0; 828 } 829 830 static inline int security_file_alloc(struct file *file) 831 { 832 return 0; 833 } 834 835 static inline void security_file_free(struct file *file) 836 { } 837 838 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 839 unsigned long arg) 840 { 841 return 0; 842 } 843 844 static inline int security_mmap_file(struct file *file, unsigned long prot, 845 unsigned long flags) 846 { 847 return 0; 848 } 849 850 static inline int security_mmap_addr(unsigned long addr) 851 { 852 return cap_mmap_addr(addr); 853 } 854 855 static inline int security_file_mprotect(struct vm_area_struct *vma, 856 unsigned long reqprot, 857 unsigned long prot) 858 { 859 return 0; 860 } 861 862 static inline int security_file_lock(struct file *file, unsigned int cmd) 863 { 864 return 0; 865 } 866 867 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 868 unsigned long arg) 869 { 870 return 0; 871 } 872 873 static inline void security_file_set_fowner(struct file *file) 874 { 875 return; 876 } 877 878 static inline int security_file_send_sigiotask(struct task_struct *tsk, 879 struct fown_struct *fown, 880 int sig) 881 { 882 return 0; 883 } 884 885 static inline int security_file_receive(struct file *file) 886 { 887 return 0; 888 } 889 890 static inline int security_file_open(struct file *file) 891 { 892 return 0; 893 } 894 895 static inline int security_task_alloc(struct task_struct *task, 896 unsigned long clone_flags) 897 { 898 return 0; 899 } 900 901 static inline void security_task_free(struct task_struct *task) 902 { } 903 904 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 905 { 906 return 0; 907 } 908 909 static inline void security_cred_free(struct cred *cred) 910 { } 911 912 static inline int security_prepare_creds(struct cred *new, 913 const struct cred *old, 914 gfp_t gfp) 915 { 916 return 0; 917 } 918 919 static inline void security_transfer_creds(struct cred *new, 920 const struct cred *old) 921 { 922 } 923 924 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 925 { 926 return 0; 927 } 928 929 static inline int security_kernel_create_files_as(struct cred *cred, 930 struct inode *inode) 931 { 932 return 0; 933 } 934 935 static inline int security_kernel_module_request(char *kmod_name) 936 { 937 return 0; 938 } 939 940 static inline int security_kernel_load_data(enum kernel_load_data_id id) 941 { 942 return 0; 943 } 944 945 static inline int security_kernel_read_file(struct file *file, 946 enum kernel_read_file_id id) 947 { 948 return 0; 949 } 950 951 static inline int security_kernel_post_read_file(struct file *file, 952 char *buf, loff_t size, 953 enum kernel_read_file_id id) 954 { 955 return 0; 956 } 957 958 static inline int security_task_fix_setuid(struct cred *new, 959 const struct cred *old, 960 int flags) 961 { 962 return cap_task_fix_setuid(new, old, flags); 963 } 964 965 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 966 { 967 return 0; 968 } 969 970 static inline int security_task_getpgid(struct task_struct *p) 971 { 972 return 0; 973 } 974 975 static inline int security_task_getsid(struct task_struct *p) 976 { 977 return 0; 978 } 979 980 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 981 { 982 *secid = 0; 983 } 984 985 static inline int security_task_setnice(struct task_struct *p, int nice) 986 { 987 return cap_task_setnice(p, nice); 988 } 989 990 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 991 { 992 return cap_task_setioprio(p, ioprio); 993 } 994 995 static inline int security_task_getioprio(struct task_struct *p) 996 { 997 return 0; 998 } 999 1000 static inline int security_task_prlimit(const struct cred *cred, 1001 const struct cred *tcred, 1002 unsigned int flags) 1003 { 1004 return 0; 1005 } 1006 1007 static inline int security_task_setrlimit(struct task_struct *p, 1008 unsigned int resource, 1009 struct rlimit *new_rlim) 1010 { 1011 return 0; 1012 } 1013 1014 static inline int security_task_setscheduler(struct task_struct *p) 1015 { 1016 return cap_task_setscheduler(p); 1017 } 1018 1019 static inline int security_task_getscheduler(struct task_struct *p) 1020 { 1021 return 0; 1022 } 1023 1024 static inline int security_task_movememory(struct task_struct *p) 1025 { 1026 return 0; 1027 } 1028 1029 static inline int security_task_kill(struct task_struct *p, 1030 struct kernel_siginfo *info, int sig, 1031 const struct cred *cred) 1032 { 1033 return 0; 1034 } 1035 1036 static inline int security_task_prctl(int option, unsigned long arg2, 1037 unsigned long arg3, 1038 unsigned long arg4, 1039 unsigned long arg5) 1040 { 1041 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1042 } 1043 1044 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1045 { } 1046 1047 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1048 short flag) 1049 { 1050 return 0; 1051 } 1052 1053 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1054 { 1055 *secid = 0; 1056 } 1057 1058 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1059 { 1060 return 0; 1061 } 1062 1063 static inline void security_msg_msg_free(struct msg_msg *msg) 1064 { } 1065 1066 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1067 { 1068 return 0; 1069 } 1070 1071 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1072 { } 1073 1074 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1075 int msqflg) 1076 { 1077 return 0; 1078 } 1079 1080 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1081 { 1082 return 0; 1083 } 1084 1085 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1086 struct msg_msg *msg, int msqflg) 1087 { 1088 return 0; 1089 } 1090 1091 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1092 struct msg_msg *msg, 1093 struct task_struct *target, 1094 long type, int mode) 1095 { 1096 return 0; 1097 } 1098 1099 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1100 { 1101 return 0; 1102 } 1103 1104 static inline void security_shm_free(struct kern_ipc_perm *shp) 1105 { } 1106 1107 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1108 int shmflg) 1109 { 1110 return 0; 1111 } 1112 1113 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1114 { 1115 return 0; 1116 } 1117 1118 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1119 char __user *shmaddr, int shmflg) 1120 { 1121 return 0; 1122 } 1123 1124 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1125 { 1126 return 0; 1127 } 1128 1129 static inline void security_sem_free(struct kern_ipc_perm *sma) 1130 { } 1131 1132 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1133 { 1134 return 0; 1135 } 1136 1137 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1138 { 1139 return 0; 1140 } 1141 1142 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1143 struct sembuf *sops, unsigned nsops, 1144 int alter) 1145 { 1146 return 0; 1147 } 1148 1149 static inline void security_d_instantiate(struct dentry *dentry, 1150 struct inode *inode) 1151 { } 1152 1153 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1154 char *name, char **value) 1155 { 1156 return -EINVAL; 1157 } 1158 1159 static inline int security_setprocattr(const char *lsm, char *name, 1160 void *value, size_t size) 1161 { 1162 return -EINVAL; 1163 } 1164 1165 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1166 { 1167 return 0; 1168 } 1169 1170 static inline int security_ismaclabel(const char *name) 1171 { 1172 return 0; 1173 } 1174 1175 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1176 { 1177 return -EOPNOTSUPP; 1178 } 1179 1180 static inline int security_secctx_to_secid(const char *secdata, 1181 u32 seclen, 1182 u32 *secid) 1183 { 1184 return -EOPNOTSUPP; 1185 } 1186 1187 static inline void security_release_secctx(char *secdata, u32 seclen) 1188 { 1189 } 1190 1191 static inline void security_inode_invalidate_secctx(struct inode *inode) 1192 { 1193 } 1194 1195 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1196 { 1197 return -EOPNOTSUPP; 1198 } 1199 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1200 { 1201 return -EOPNOTSUPP; 1202 } 1203 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1204 { 1205 return -EOPNOTSUPP; 1206 } 1207 #endif /* CONFIG_SECURITY */ 1208 1209 #ifdef CONFIG_SECURITY_NETWORK 1210 1211 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1212 int security_unix_may_send(struct socket *sock, struct socket *other); 1213 int security_socket_create(int family, int type, int protocol, int kern); 1214 int security_socket_post_create(struct socket *sock, int family, 1215 int type, int protocol, int kern); 1216 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1217 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1218 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1219 int security_socket_listen(struct socket *sock, int backlog); 1220 int security_socket_accept(struct socket *sock, struct socket *newsock); 1221 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1222 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1223 int size, int flags); 1224 int security_socket_getsockname(struct socket *sock); 1225 int security_socket_getpeername(struct socket *sock); 1226 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1227 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1228 int security_socket_shutdown(struct socket *sock, int how); 1229 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1230 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1231 int __user *optlen, unsigned len); 1232 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1233 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1234 void security_sk_free(struct sock *sk); 1235 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1236 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1237 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1238 void security_sock_graft(struct sock*sk, struct socket *parent); 1239 int security_inet_conn_request(struct sock *sk, 1240 struct sk_buff *skb, struct request_sock *req); 1241 void security_inet_csk_clone(struct sock *newsk, 1242 const struct request_sock *req); 1243 void security_inet_conn_established(struct sock *sk, 1244 struct sk_buff *skb); 1245 int security_secmark_relabel_packet(u32 secid); 1246 void security_secmark_refcount_inc(void); 1247 void security_secmark_refcount_dec(void); 1248 int security_tun_dev_alloc_security(void **security); 1249 void security_tun_dev_free_security(void *security); 1250 int security_tun_dev_create(void); 1251 int security_tun_dev_attach_queue(void *security); 1252 int security_tun_dev_attach(struct sock *sk, void *security); 1253 int security_tun_dev_open(void *security); 1254 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1255 int security_sctp_bind_connect(struct sock *sk, int optname, 1256 struct sockaddr *address, int addrlen); 1257 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1258 struct sock *newsk); 1259 1260 #else /* CONFIG_SECURITY_NETWORK */ 1261 static inline int security_unix_stream_connect(struct sock *sock, 1262 struct sock *other, 1263 struct sock *newsk) 1264 { 1265 return 0; 1266 } 1267 1268 static inline int security_unix_may_send(struct socket *sock, 1269 struct socket *other) 1270 { 1271 return 0; 1272 } 1273 1274 static inline int security_socket_create(int family, int type, 1275 int protocol, int kern) 1276 { 1277 return 0; 1278 } 1279 1280 static inline int security_socket_post_create(struct socket *sock, 1281 int family, 1282 int type, 1283 int protocol, int kern) 1284 { 1285 return 0; 1286 } 1287 1288 static inline int security_socket_socketpair(struct socket *socka, 1289 struct socket *sockb) 1290 { 1291 return 0; 1292 } 1293 1294 static inline int security_socket_bind(struct socket *sock, 1295 struct sockaddr *address, 1296 int addrlen) 1297 { 1298 return 0; 1299 } 1300 1301 static inline int security_socket_connect(struct socket *sock, 1302 struct sockaddr *address, 1303 int addrlen) 1304 { 1305 return 0; 1306 } 1307 1308 static inline int security_socket_listen(struct socket *sock, int backlog) 1309 { 1310 return 0; 1311 } 1312 1313 static inline int security_socket_accept(struct socket *sock, 1314 struct socket *newsock) 1315 { 1316 return 0; 1317 } 1318 1319 static inline int security_socket_sendmsg(struct socket *sock, 1320 struct msghdr *msg, int size) 1321 { 1322 return 0; 1323 } 1324 1325 static inline int security_socket_recvmsg(struct socket *sock, 1326 struct msghdr *msg, int size, 1327 int flags) 1328 { 1329 return 0; 1330 } 1331 1332 static inline int security_socket_getsockname(struct socket *sock) 1333 { 1334 return 0; 1335 } 1336 1337 static inline int security_socket_getpeername(struct socket *sock) 1338 { 1339 return 0; 1340 } 1341 1342 static inline int security_socket_getsockopt(struct socket *sock, 1343 int level, int optname) 1344 { 1345 return 0; 1346 } 1347 1348 static inline int security_socket_setsockopt(struct socket *sock, 1349 int level, int optname) 1350 { 1351 return 0; 1352 } 1353 1354 static inline int security_socket_shutdown(struct socket *sock, int how) 1355 { 1356 return 0; 1357 } 1358 static inline int security_sock_rcv_skb(struct sock *sk, 1359 struct sk_buff *skb) 1360 { 1361 return 0; 1362 } 1363 1364 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1365 int __user *optlen, unsigned len) 1366 { 1367 return -ENOPROTOOPT; 1368 } 1369 1370 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1371 { 1372 return -ENOPROTOOPT; 1373 } 1374 1375 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1376 { 1377 return 0; 1378 } 1379 1380 static inline void security_sk_free(struct sock *sk) 1381 { 1382 } 1383 1384 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1385 { 1386 } 1387 1388 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1389 { 1390 } 1391 1392 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1393 { 1394 } 1395 1396 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1397 { 1398 } 1399 1400 static inline int security_inet_conn_request(struct sock *sk, 1401 struct sk_buff *skb, struct request_sock *req) 1402 { 1403 return 0; 1404 } 1405 1406 static inline void security_inet_csk_clone(struct sock *newsk, 1407 const struct request_sock *req) 1408 { 1409 } 1410 1411 static inline void security_inet_conn_established(struct sock *sk, 1412 struct sk_buff *skb) 1413 { 1414 } 1415 1416 static inline int security_secmark_relabel_packet(u32 secid) 1417 { 1418 return 0; 1419 } 1420 1421 static inline void security_secmark_refcount_inc(void) 1422 { 1423 } 1424 1425 static inline void security_secmark_refcount_dec(void) 1426 { 1427 } 1428 1429 static inline int security_tun_dev_alloc_security(void **security) 1430 { 1431 return 0; 1432 } 1433 1434 static inline void security_tun_dev_free_security(void *security) 1435 { 1436 } 1437 1438 static inline int security_tun_dev_create(void) 1439 { 1440 return 0; 1441 } 1442 1443 static inline int security_tun_dev_attach_queue(void *security) 1444 { 1445 return 0; 1446 } 1447 1448 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1449 { 1450 return 0; 1451 } 1452 1453 static inline int security_tun_dev_open(void *security) 1454 { 1455 return 0; 1456 } 1457 1458 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1459 struct sk_buff *skb) 1460 { 1461 return 0; 1462 } 1463 1464 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1465 struct sockaddr *address, 1466 int addrlen) 1467 { 1468 return 0; 1469 } 1470 1471 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1472 struct sock *sk, 1473 struct sock *newsk) 1474 { 1475 } 1476 #endif /* CONFIG_SECURITY_NETWORK */ 1477 1478 #ifdef CONFIG_SECURITY_INFINIBAND 1479 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1480 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1481 int security_ib_alloc_security(void **sec); 1482 void security_ib_free_security(void *sec); 1483 #else /* CONFIG_SECURITY_INFINIBAND */ 1484 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1485 { 1486 return 0; 1487 } 1488 1489 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1490 { 1491 return 0; 1492 } 1493 1494 static inline int security_ib_alloc_security(void **sec) 1495 { 1496 return 0; 1497 } 1498 1499 static inline void security_ib_free_security(void *sec) 1500 { 1501 } 1502 #endif /* CONFIG_SECURITY_INFINIBAND */ 1503 1504 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1505 1506 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1507 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1508 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1509 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1510 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1511 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1512 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1513 struct xfrm_sec_ctx *polsec, u32 secid); 1514 int security_xfrm_state_delete(struct xfrm_state *x); 1515 void security_xfrm_state_free(struct xfrm_state *x); 1516 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1517 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1518 struct xfrm_policy *xp, 1519 const struct flowi *fl); 1520 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1521 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1522 1523 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1524 1525 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1526 struct xfrm_user_sec_ctx *sec_ctx, 1527 gfp_t gfp) 1528 { 1529 return 0; 1530 } 1531 1532 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1533 { 1534 return 0; 1535 } 1536 1537 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1538 { 1539 } 1540 1541 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1542 { 1543 return 0; 1544 } 1545 1546 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1547 struct xfrm_user_sec_ctx *sec_ctx) 1548 { 1549 return 0; 1550 } 1551 1552 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1553 struct xfrm_sec_ctx *polsec, u32 secid) 1554 { 1555 return 0; 1556 } 1557 1558 static inline void security_xfrm_state_free(struct xfrm_state *x) 1559 { 1560 } 1561 1562 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1563 { 1564 return 0; 1565 } 1566 1567 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1568 { 1569 return 0; 1570 } 1571 1572 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1573 struct xfrm_policy *xp, const struct flowi *fl) 1574 { 1575 return 1; 1576 } 1577 1578 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1579 { 1580 return 0; 1581 } 1582 1583 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1584 { 1585 } 1586 1587 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1588 1589 #ifdef CONFIG_SECURITY_PATH 1590 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1591 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1592 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1593 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1594 unsigned int dev); 1595 int security_path_truncate(const struct path *path); 1596 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1597 const char *old_name); 1598 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1599 struct dentry *new_dentry); 1600 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1601 const struct path *new_dir, struct dentry *new_dentry, 1602 unsigned int flags); 1603 int security_path_chmod(const struct path *path, umode_t mode); 1604 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1605 int security_path_chroot(const struct path *path); 1606 #else /* CONFIG_SECURITY_PATH */ 1607 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1608 { 1609 return 0; 1610 } 1611 1612 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1613 umode_t mode) 1614 { 1615 return 0; 1616 } 1617 1618 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1619 { 1620 return 0; 1621 } 1622 1623 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1624 umode_t mode, unsigned int dev) 1625 { 1626 return 0; 1627 } 1628 1629 static inline int security_path_truncate(const struct path *path) 1630 { 1631 return 0; 1632 } 1633 1634 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1635 const char *old_name) 1636 { 1637 return 0; 1638 } 1639 1640 static inline int security_path_link(struct dentry *old_dentry, 1641 const struct path *new_dir, 1642 struct dentry *new_dentry) 1643 { 1644 return 0; 1645 } 1646 1647 static inline int security_path_rename(const struct path *old_dir, 1648 struct dentry *old_dentry, 1649 const struct path *new_dir, 1650 struct dentry *new_dentry, 1651 unsigned int flags) 1652 { 1653 return 0; 1654 } 1655 1656 static inline int security_path_chmod(const struct path *path, umode_t mode) 1657 { 1658 return 0; 1659 } 1660 1661 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1662 { 1663 return 0; 1664 } 1665 1666 static inline int security_path_chroot(const struct path *path) 1667 { 1668 return 0; 1669 } 1670 #endif /* CONFIG_SECURITY_PATH */ 1671 1672 #ifdef CONFIG_KEYS 1673 #ifdef CONFIG_SECURITY 1674 1675 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1676 void security_key_free(struct key *key); 1677 int security_key_permission(key_ref_t key_ref, 1678 const struct cred *cred, unsigned perm); 1679 int security_key_getsecurity(struct key *key, char **_buffer); 1680 1681 #else 1682 1683 static inline int security_key_alloc(struct key *key, 1684 const struct cred *cred, 1685 unsigned long flags) 1686 { 1687 return 0; 1688 } 1689 1690 static inline void security_key_free(struct key *key) 1691 { 1692 } 1693 1694 static inline int security_key_permission(key_ref_t key_ref, 1695 const struct cred *cred, 1696 unsigned perm) 1697 { 1698 return 0; 1699 } 1700 1701 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1702 { 1703 *_buffer = NULL; 1704 return 0; 1705 } 1706 1707 #endif 1708 #endif /* CONFIG_KEYS */ 1709 1710 #ifdef CONFIG_AUDIT 1711 #ifdef CONFIG_SECURITY 1712 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1713 int security_audit_rule_known(struct audit_krule *krule); 1714 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1715 void security_audit_rule_free(void *lsmrule); 1716 1717 #else 1718 1719 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1720 void **lsmrule) 1721 { 1722 return 0; 1723 } 1724 1725 static inline int security_audit_rule_known(struct audit_krule *krule) 1726 { 1727 return 0; 1728 } 1729 1730 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1731 void *lsmrule) 1732 { 1733 return 0; 1734 } 1735 1736 static inline void security_audit_rule_free(void *lsmrule) 1737 { } 1738 1739 #endif /* CONFIG_SECURITY */ 1740 #endif /* CONFIG_AUDIT */ 1741 1742 #ifdef CONFIG_SECURITYFS 1743 1744 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1745 struct dentry *parent, void *data, 1746 const struct file_operations *fops); 1747 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1748 struct dentry *securityfs_create_symlink(const char *name, 1749 struct dentry *parent, 1750 const char *target, 1751 const struct inode_operations *iops); 1752 extern void securityfs_remove(struct dentry *dentry); 1753 1754 #else /* CONFIG_SECURITYFS */ 1755 1756 static inline struct dentry *securityfs_create_dir(const char *name, 1757 struct dentry *parent) 1758 { 1759 return ERR_PTR(-ENODEV); 1760 } 1761 1762 static inline struct dentry *securityfs_create_file(const char *name, 1763 umode_t mode, 1764 struct dentry *parent, 1765 void *data, 1766 const struct file_operations *fops) 1767 { 1768 return ERR_PTR(-ENODEV); 1769 } 1770 1771 static inline struct dentry *securityfs_create_symlink(const char *name, 1772 struct dentry *parent, 1773 const char *target, 1774 const struct inode_operations *iops) 1775 { 1776 return ERR_PTR(-ENODEV); 1777 } 1778 1779 static inline void securityfs_remove(struct dentry *dentry) 1780 {} 1781 1782 #endif 1783 1784 #ifdef CONFIG_BPF_SYSCALL 1785 union bpf_attr; 1786 struct bpf_map; 1787 struct bpf_prog; 1788 struct bpf_prog_aux; 1789 #ifdef CONFIG_SECURITY 1790 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1791 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1792 extern int security_bpf_prog(struct bpf_prog *prog); 1793 extern int security_bpf_map_alloc(struct bpf_map *map); 1794 extern void security_bpf_map_free(struct bpf_map *map); 1795 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1796 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1797 #else 1798 static inline int security_bpf(int cmd, union bpf_attr *attr, 1799 unsigned int size) 1800 { 1801 return 0; 1802 } 1803 1804 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1805 { 1806 return 0; 1807 } 1808 1809 static inline int security_bpf_prog(struct bpf_prog *prog) 1810 { 1811 return 0; 1812 } 1813 1814 static inline int security_bpf_map_alloc(struct bpf_map *map) 1815 { 1816 return 0; 1817 } 1818 1819 static inline void security_bpf_map_free(struct bpf_map *map) 1820 { } 1821 1822 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1823 { 1824 return 0; 1825 } 1826 1827 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1828 { } 1829 #endif /* CONFIG_SECURITY */ 1830 #endif /* CONFIG_BPF_SYSCALL */ 1831 1832 #endif /* ! __LINUX_SECURITY_H */ 1833 1834