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 siginfo; 39 struct sembuf; 40 struct kern_ipc_perm; 41 struct audit_context; 42 struct super_block; 43 struct inode; 44 struct dentry; 45 struct file; 46 struct vfsmount; 47 struct path; 48 struct qstr; 49 struct iattr; 50 struct fown_struct; 51 struct file_operations; 52 struct msg_msg; 53 struct xattr; 54 struct xfrm_sec_ctx; 55 struct mm_struct; 56 57 /* If capable should audit the security request */ 58 #define SECURITY_CAP_NOAUDIT 0 59 #define SECURITY_CAP_AUDIT 1 60 61 /* LSM Agnostic defines for sb_set_mnt_opts */ 62 #define SECURITY_LSM_NATIVE_LABELS 1 63 64 struct ctl_table; 65 struct audit_krule; 66 struct user_namespace; 67 struct timezone; 68 69 enum lsm_event { 70 LSM_POLICY_CHANGE, 71 }; 72 73 /* These functions are in security/commoncap.c */ 74 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 75 int cap, int audit); 76 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 77 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 78 extern int cap_ptrace_traceme(struct task_struct *parent); 79 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 80 extern int cap_capset(struct cred *new, const struct cred *old, 81 const kernel_cap_t *effective, 82 const kernel_cap_t *inheritable, 83 const kernel_cap_t *permitted); 84 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 85 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 86 const void *value, size_t size, int flags); 87 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 88 extern int cap_inode_need_killpriv(struct dentry *dentry); 89 extern int cap_inode_killpriv(struct dentry *dentry); 90 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 91 void **buffer, bool alloc); 92 extern int cap_mmap_addr(unsigned long addr); 93 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 94 unsigned long prot, unsigned long flags); 95 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 96 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 97 unsigned long arg4, unsigned long arg5); 98 extern int cap_task_setscheduler(struct task_struct *p); 99 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 100 extern int cap_task_setnice(struct task_struct *p, int nice); 101 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 102 103 struct msghdr; 104 struct sk_buff; 105 struct sock; 106 struct sockaddr; 107 struct socket; 108 struct flowi; 109 struct dst_entry; 110 struct xfrm_selector; 111 struct xfrm_policy; 112 struct xfrm_state; 113 struct xfrm_user_sec_ctx; 114 struct seq_file; 115 struct sctp_endpoint; 116 117 #ifdef CONFIG_MMU 118 extern unsigned long mmap_min_addr; 119 extern unsigned long dac_mmap_min_addr; 120 #else 121 #define mmap_min_addr 0UL 122 #define dac_mmap_min_addr 0UL 123 #endif 124 125 /* 126 * Values used in the task_security_ops calls 127 */ 128 /* setuid or setgid, id0 == uid or gid */ 129 #define LSM_SETID_ID 1 130 131 /* setreuid or setregid, id0 == real, id1 == eff */ 132 #define LSM_SETID_RE 2 133 134 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 135 #define LSM_SETID_RES 4 136 137 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 138 #define LSM_SETID_FS 8 139 140 /* Flags for security_task_prlimit(). */ 141 #define LSM_PRLIMIT_READ 1 142 #define LSM_PRLIMIT_WRITE 2 143 144 /* forward declares to avoid warnings */ 145 struct sched_param; 146 struct request_sock; 147 148 /* bprm->unsafe reasons */ 149 #define LSM_UNSAFE_SHARE 1 150 #define LSM_UNSAFE_PTRACE 2 151 #define LSM_UNSAFE_NO_NEW_PRIVS 4 152 153 #ifdef CONFIG_MMU 154 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 155 void __user *buffer, size_t *lenp, loff_t *ppos); 156 #endif 157 158 /* security_inode_init_security callback function to write xattrs */ 159 typedef int (*initxattrs) (struct inode *inode, 160 const struct xattr *xattr_array, void *fs_data); 161 162 #ifdef CONFIG_SECURITY 163 164 struct security_mnt_opts { 165 char **mnt_opts; 166 int *mnt_opts_flags; 167 int num_mnt_opts; 168 }; 169 170 int call_lsm_notifier(enum lsm_event event, void *data); 171 int register_lsm_notifier(struct notifier_block *nb); 172 int unregister_lsm_notifier(struct notifier_block *nb); 173 174 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 175 { 176 opts->mnt_opts = NULL; 177 opts->mnt_opts_flags = NULL; 178 opts->num_mnt_opts = 0; 179 } 180 181 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 182 { 183 int i; 184 if (opts->mnt_opts) 185 for (i = 0; i < opts->num_mnt_opts; i++) 186 kfree(opts->mnt_opts[i]); 187 kfree(opts->mnt_opts); 188 opts->mnt_opts = NULL; 189 kfree(opts->mnt_opts_flags); 190 opts->mnt_opts_flags = NULL; 191 opts->num_mnt_opts = 0; 192 } 193 194 /* prototypes */ 195 extern int security_init(void); 196 197 /* Security operations */ 198 int security_binder_set_context_mgr(struct task_struct *mgr); 199 int security_binder_transaction(struct task_struct *from, 200 struct task_struct *to); 201 int security_binder_transfer_binder(struct task_struct *from, 202 struct task_struct *to); 203 int security_binder_transfer_file(struct task_struct *from, 204 struct task_struct *to, struct file *file); 205 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 206 int security_ptrace_traceme(struct task_struct *parent); 207 int security_capget(struct task_struct *target, 208 kernel_cap_t *effective, 209 kernel_cap_t *inheritable, 210 kernel_cap_t *permitted); 211 int security_capset(struct cred *new, const struct cred *old, 212 const kernel_cap_t *effective, 213 const kernel_cap_t *inheritable, 214 const kernel_cap_t *permitted); 215 int security_capable(const struct cred *cred, struct user_namespace *ns, 216 int cap); 217 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 218 int cap); 219 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 220 int security_quota_on(struct dentry *dentry); 221 int security_syslog(int type); 222 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 223 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 224 int security_bprm_set_creds(struct linux_binprm *bprm); 225 int security_bprm_check(struct linux_binprm *bprm); 226 void security_bprm_committing_creds(struct linux_binprm *bprm); 227 void security_bprm_committed_creds(struct linux_binprm *bprm); 228 int security_sb_alloc(struct super_block *sb); 229 void security_sb_free(struct super_block *sb); 230 int security_sb_copy_data(char *orig, char *copy); 231 int security_sb_remount(struct super_block *sb, void *data); 232 int security_sb_kern_mount(struct super_block *sb, int flags, void *data); 233 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 234 int security_sb_statfs(struct dentry *dentry); 235 int security_sb_mount(const char *dev_name, const struct path *path, 236 const char *type, unsigned long flags, void *data); 237 int security_sb_umount(struct vfsmount *mnt, int flags); 238 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 239 int security_sb_set_mnt_opts(struct super_block *sb, 240 struct security_mnt_opts *opts, 241 unsigned long kern_flags, 242 unsigned long *set_kern_flags); 243 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 244 struct super_block *newsb, 245 unsigned long kern_flags, 246 unsigned long *set_kern_flags); 247 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); 248 int security_dentry_init_security(struct dentry *dentry, int mode, 249 const struct qstr *name, void **ctx, 250 u32 *ctxlen); 251 int security_dentry_create_files_as(struct dentry *dentry, int mode, 252 struct qstr *name, 253 const struct cred *old, 254 struct cred *new); 255 256 int security_inode_alloc(struct inode *inode); 257 void security_inode_free(struct inode *inode); 258 int security_inode_init_security(struct inode *inode, struct inode *dir, 259 const struct qstr *qstr, 260 initxattrs initxattrs, void *fs_data); 261 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 262 const struct qstr *qstr, const char **name, 263 void **value, size_t *len); 264 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 265 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 266 struct dentry *new_dentry); 267 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 268 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 269 const char *old_name); 270 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 271 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 272 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 273 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 274 struct inode *new_dir, struct dentry *new_dentry, 275 unsigned int flags); 276 int security_inode_readlink(struct dentry *dentry); 277 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 278 bool rcu); 279 int security_inode_permission(struct inode *inode, int mask); 280 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 281 int security_inode_getattr(const struct path *path); 282 int security_inode_setxattr(struct dentry *dentry, const char *name, 283 const void *value, size_t size, int flags); 284 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 285 const void *value, size_t size, int flags); 286 int security_inode_getxattr(struct dentry *dentry, const char *name); 287 int security_inode_listxattr(struct dentry *dentry); 288 int security_inode_removexattr(struct dentry *dentry, const char *name); 289 int security_inode_need_killpriv(struct dentry *dentry); 290 int security_inode_killpriv(struct dentry *dentry); 291 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 292 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 293 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 294 void security_inode_getsecid(struct inode *inode, u32 *secid); 295 int security_inode_copy_up(struct dentry *src, struct cred **new); 296 int security_inode_copy_up_xattr(const char *name); 297 int security_file_permission(struct file *file, int mask); 298 int security_file_alloc(struct file *file); 299 void security_file_free(struct file *file); 300 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 301 int security_mmap_file(struct file *file, unsigned long prot, 302 unsigned long flags); 303 int security_mmap_addr(unsigned long addr); 304 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 305 unsigned long prot); 306 int security_file_lock(struct file *file, unsigned int cmd); 307 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 308 void security_file_set_fowner(struct file *file); 309 int security_file_send_sigiotask(struct task_struct *tsk, 310 struct fown_struct *fown, int sig); 311 int security_file_receive(struct file *file); 312 int security_file_open(struct file *file, const struct cred *cred); 313 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 314 void security_task_free(struct task_struct *task); 315 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 316 void security_cred_free(struct cred *cred); 317 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 318 void security_transfer_creds(struct cred *new, const struct cred *old); 319 void security_cred_getsecid(const struct cred *c, u32 *secid); 320 int security_kernel_act_as(struct cred *new, u32 secid); 321 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 322 int security_kernel_module_request(char *kmod_name); 323 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 324 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 325 enum kernel_read_file_id id); 326 int security_task_fix_setuid(struct cred *new, const struct cred *old, 327 int flags); 328 int security_task_setpgid(struct task_struct *p, pid_t pgid); 329 int security_task_getpgid(struct task_struct *p); 330 int security_task_getsid(struct task_struct *p); 331 void security_task_getsecid(struct task_struct *p, u32 *secid); 332 int security_task_setnice(struct task_struct *p, int nice); 333 int security_task_setioprio(struct task_struct *p, int ioprio); 334 int security_task_getioprio(struct task_struct *p); 335 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 336 unsigned int flags); 337 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 338 struct rlimit *new_rlim); 339 int security_task_setscheduler(struct task_struct *p); 340 int security_task_getscheduler(struct task_struct *p); 341 int security_task_movememory(struct task_struct *p); 342 int security_task_kill(struct task_struct *p, struct siginfo *info, 343 int sig, const struct cred *cred); 344 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 345 unsigned long arg4, unsigned long arg5); 346 void security_task_to_inode(struct task_struct *p, struct inode *inode); 347 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 348 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 349 int security_msg_msg_alloc(struct msg_msg *msg); 350 void security_msg_msg_free(struct msg_msg *msg); 351 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 352 void security_msg_queue_free(struct kern_ipc_perm *msq); 353 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 354 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 355 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 356 struct msg_msg *msg, int msqflg); 357 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 358 struct task_struct *target, long type, int mode); 359 int security_shm_alloc(struct kern_ipc_perm *shp); 360 void security_shm_free(struct kern_ipc_perm *shp); 361 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 362 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 363 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 364 int security_sem_alloc(struct kern_ipc_perm *sma); 365 void security_sem_free(struct kern_ipc_perm *sma); 366 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 367 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 368 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 369 unsigned nsops, int alter); 370 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 371 int security_getprocattr(struct task_struct *p, char *name, char **value); 372 int security_setprocattr(const char *name, void *value, size_t size); 373 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 374 int security_ismaclabel(const char *name); 375 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 376 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 377 void security_release_secctx(char *secdata, u32 seclen); 378 379 void security_inode_invalidate_secctx(struct inode *inode); 380 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 381 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 382 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 383 #else /* CONFIG_SECURITY */ 384 struct security_mnt_opts { 385 }; 386 387 static inline int call_lsm_notifier(enum lsm_event event, void *data) 388 { 389 return 0; 390 } 391 392 static inline int register_lsm_notifier(struct notifier_block *nb) 393 { 394 return 0; 395 } 396 397 static inline int unregister_lsm_notifier(struct notifier_block *nb) 398 { 399 return 0; 400 } 401 402 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 403 { 404 } 405 406 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 407 { 408 } 409 410 /* 411 * This is the default capabilities functionality. Most of these functions 412 * are just stubbed out, but a few must call the proper capable code. 413 */ 414 415 static inline int security_init(void) 416 { 417 return 0; 418 } 419 420 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 421 { 422 return 0; 423 } 424 425 static inline int security_binder_transaction(struct task_struct *from, 426 struct task_struct *to) 427 { 428 return 0; 429 } 430 431 static inline int security_binder_transfer_binder(struct task_struct *from, 432 struct task_struct *to) 433 { 434 return 0; 435 } 436 437 static inline int security_binder_transfer_file(struct task_struct *from, 438 struct task_struct *to, 439 struct file *file) 440 { 441 return 0; 442 } 443 444 static inline int security_ptrace_access_check(struct task_struct *child, 445 unsigned int mode) 446 { 447 return cap_ptrace_access_check(child, mode); 448 } 449 450 static inline int security_ptrace_traceme(struct task_struct *parent) 451 { 452 return cap_ptrace_traceme(parent); 453 } 454 455 static inline int security_capget(struct task_struct *target, 456 kernel_cap_t *effective, 457 kernel_cap_t *inheritable, 458 kernel_cap_t *permitted) 459 { 460 return cap_capget(target, effective, inheritable, permitted); 461 } 462 463 static inline int security_capset(struct cred *new, 464 const struct cred *old, 465 const kernel_cap_t *effective, 466 const kernel_cap_t *inheritable, 467 const kernel_cap_t *permitted) 468 { 469 return cap_capset(new, old, effective, inheritable, permitted); 470 } 471 472 static inline int security_capable(const struct cred *cred, 473 struct user_namespace *ns, int cap) 474 { 475 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT); 476 } 477 478 static inline int security_capable_noaudit(const struct cred *cred, 479 struct user_namespace *ns, int cap) { 480 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 481 } 482 483 static inline int security_quotactl(int cmds, int type, int id, 484 struct super_block *sb) 485 { 486 return 0; 487 } 488 489 static inline int security_quota_on(struct dentry *dentry) 490 { 491 return 0; 492 } 493 494 static inline int security_syslog(int type) 495 { 496 return 0; 497 } 498 499 static inline int security_settime64(const struct timespec64 *ts, 500 const struct timezone *tz) 501 { 502 return cap_settime(ts, tz); 503 } 504 505 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 506 { 507 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 508 } 509 510 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 511 { 512 return cap_bprm_set_creds(bprm); 513 } 514 515 static inline int security_bprm_check(struct linux_binprm *bprm) 516 { 517 return 0; 518 } 519 520 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 521 { 522 } 523 524 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 525 { 526 } 527 528 static inline int security_sb_alloc(struct super_block *sb) 529 { 530 return 0; 531 } 532 533 static inline void security_sb_free(struct super_block *sb) 534 { } 535 536 static inline int security_sb_copy_data(char *orig, char *copy) 537 { 538 return 0; 539 } 540 541 static inline int security_sb_remount(struct super_block *sb, void *data) 542 { 543 return 0; 544 } 545 546 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 547 { 548 return 0; 549 } 550 551 static inline int security_sb_show_options(struct seq_file *m, 552 struct super_block *sb) 553 { 554 return 0; 555 } 556 557 static inline int security_sb_statfs(struct dentry *dentry) 558 { 559 return 0; 560 } 561 562 static inline int security_sb_mount(const char *dev_name, const struct path *path, 563 const char *type, unsigned long flags, 564 void *data) 565 { 566 return 0; 567 } 568 569 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 570 { 571 return 0; 572 } 573 574 static inline int security_sb_pivotroot(const struct path *old_path, 575 const struct path *new_path) 576 { 577 return 0; 578 } 579 580 static inline int security_sb_set_mnt_opts(struct super_block *sb, 581 struct security_mnt_opts *opts, 582 unsigned long kern_flags, 583 unsigned long *set_kern_flags) 584 { 585 return 0; 586 } 587 588 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 589 struct super_block *newsb, 590 unsigned long kern_flags, 591 unsigned long *set_kern_flags) 592 { 593 return 0; 594 } 595 596 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 597 { 598 return 0; 599 } 600 601 static inline int security_inode_alloc(struct inode *inode) 602 { 603 return 0; 604 } 605 606 static inline void security_inode_free(struct inode *inode) 607 { } 608 609 static inline int security_dentry_init_security(struct dentry *dentry, 610 int mode, 611 const struct qstr *name, 612 void **ctx, 613 u32 *ctxlen) 614 { 615 return -EOPNOTSUPP; 616 } 617 618 static inline int security_dentry_create_files_as(struct dentry *dentry, 619 int mode, struct qstr *name, 620 const struct cred *old, 621 struct cred *new) 622 { 623 return 0; 624 } 625 626 627 static inline int security_inode_init_security(struct inode *inode, 628 struct inode *dir, 629 const struct qstr *qstr, 630 const initxattrs xattrs, 631 void *fs_data) 632 { 633 return 0; 634 } 635 636 static inline int security_old_inode_init_security(struct inode *inode, 637 struct inode *dir, 638 const struct qstr *qstr, 639 const char **name, 640 void **value, size_t *len) 641 { 642 return -EOPNOTSUPP; 643 } 644 645 static inline int security_inode_create(struct inode *dir, 646 struct dentry *dentry, 647 umode_t mode) 648 { 649 return 0; 650 } 651 652 static inline int security_inode_link(struct dentry *old_dentry, 653 struct inode *dir, 654 struct dentry *new_dentry) 655 { 656 return 0; 657 } 658 659 static inline int security_inode_unlink(struct inode *dir, 660 struct dentry *dentry) 661 { 662 return 0; 663 } 664 665 static inline int security_inode_symlink(struct inode *dir, 666 struct dentry *dentry, 667 const char *old_name) 668 { 669 return 0; 670 } 671 672 static inline int security_inode_mkdir(struct inode *dir, 673 struct dentry *dentry, 674 int mode) 675 { 676 return 0; 677 } 678 679 static inline int security_inode_rmdir(struct inode *dir, 680 struct dentry *dentry) 681 { 682 return 0; 683 } 684 685 static inline int security_inode_mknod(struct inode *dir, 686 struct dentry *dentry, 687 int mode, dev_t dev) 688 { 689 return 0; 690 } 691 692 static inline int security_inode_rename(struct inode *old_dir, 693 struct dentry *old_dentry, 694 struct inode *new_dir, 695 struct dentry *new_dentry, 696 unsigned int flags) 697 { 698 return 0; 699 } 700 701 static inline int security_inode_readlink(struct dentry *dentry) 702 { 703 return 0; 704 } 705 706 static inline int security_inode_follow_link(struct dentry *dentry, 707 struct inode *inode, 708 bool rcu) 709 { 710 return 0; 711 } 712 713 static inline int security_inode_permission(struct inode *inode, int mask) 714 { 715 return 0; 716 } 717 718 static inline int security_inode_setattr(struct dentry *dentry, 719 struct iattr *attr) 720 { 721 return 0; 722 } 723 724 static inline int security_inode_getattr(const struct path *path) 725 { 726 return 0; 727 } 728 729 static inline int security_inode_setxattr(struct dentry *dentry, 730 const char *name, const void *value, size_t size, int flags) 731 { 732 return cap_inode_setxattr(dentry, name, value, size, flags); 733 } 734 735 static inline void security_inode_post_setxattr(struct dentry *dentry, 736 const char *name, const void *value, size_t size, int flags) 737 { } 738 739 static inline int security_inode_getxattr(struct dentry *dentry, 740 const char *name) 741 { 742 return 0; 743 } 744 745 static inline int security_inode_listxattr(struct dentry *dentry) 746 { 747 return 0; 748 } 749 750 static inline int security_inode_removexattr(struct dentry *dentry, 751 const char *name) 752 { 753 return cap_inode_removexattr(dentry, name); 754 } 755 756 static inline int security_inode_need_killpriv(struct dentry *dentry) 757 { 758 return cap_inode_need_killpriv(dentry); 759 } 760 761 static inline int security_inode_killpriv(struct dentry *dentry) 762 { 763 return cap_inode_killpriv(dentry); 764 } 765 766 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 767 { 768 return -EOPNOTSUPP; 769 } 770 771 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 772 { 773 return -EOPNOTSUPP; 774 } 775 776 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 777 { 778 return 0; 779 } 780 781 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 782 { 783 *secid = 0; 784 } 785 786 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 787 { 788 return 0; 789 } 790 791 static inline int security_inode_copy_up_xattr(const char *name) 792 { 793 return -EOPNOTSUPP; 794 } 795 796 static inline int security_file_permission(struct file *file, int mask) 797 { 798 return 0; 799 } 800 801 static inline int security_file_alloc(struct file *file) 802 { 803 return 0; 804 } 805 806 static inline void security_file_free(struct file *file) 807 { } 808 809 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 810 unsigned long arg) 811 { 812 return 0; 813 } 814 815 static inline int security_mmap_file(struct file *file, unsigned long prot, 816 unsigned long flags) 817 { 818 return 0; 819 } 820 821 static inline int security_mmap_addr(unsigned long addr) 822 { 823 return cap_mmap_addr(addr); 824 } 825 826 static inline int security_file_mprotect(struct vm_area_struct *vma, 827 unsigned long reqprot, 828 unsigned long prot) 829 { 830 return 0; 831 } 832 833 static inline int security_file_lock(struct file *file, unsigned int cmd) 834 { 835 return 0; 836 } 837 838 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 839 unsigned long arg) 840 { 841 return 0; 842 } 843 844 static inline void security_file_set_fowner(struct file *file) 845 { 846 return; 847 } 848 849 static inline int security_file_send_sigiotask(struct task_struct *tsk, 850 struct fown_struct *fown, 851 int sig) 852 { 853 return 0; 854 } 855 856 static inline int security_file_receive(struct file *file) 857 { 858 return 0; 859 } 860 861 static inline int security_file_open(struct file *file, 862 const struct cred *cred) 863 { 864 return 0; 865 } 866 867 static inline int security_task_alloc(struct task_struct *task, 868 unsigned long clone_flags) 869 { 870 return 0; 871 } 872 873 static inline void security_task_free(struct task_struct *task) 874 { } 875 876 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 877 { 878 return 0; 879 } 880 881 static inline void security_cred_free(struct cred *cred) 882 { } 883 884 static inline int security_prepare_creds(struct cred *new, 885 const struct cred *old, 886 gfp_t gfp) 887 { 888 return 0; 889 } 890 891 static inline void security_transfer_creds(struct cred *new, 892 const struct cred *old) 893 { 894 } 895 896 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 897 { 898 return 0; 899 } 900 901 static inline int security_kernel_create_files_as(struct cred *cred, 902 struct inode *inode) 903 { 904 return 0; 905 } 906 907 static inline int security_kernel_module_request(char *kmod_name) 908 { 909 return 0; 910 } 911 912 static inline int security_kernel_read_file(struct file *file, 913 enum kernel_read_file_id id) 914 { 915 return 0; 916 } 917 918 static inline int security_kernel_post_read_file(struct file *file, 919 char *buf, loff_t size, 920 enum kernel_read_file_id id) 921 { 922 return 0; 923 } 924 925 static inline int security_task_fix_setuid(struct cred *new, 926 const struct cred *old, 927 int flags) 928 { 929 return cap_task_fix_setuid(new, old, flags); 930 } 931 932 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 933 { 934 return 0; 935 } 936 937 static inline int security_task_getpgid(struct task_struct *p) 938 { 939 return 0; 940 } 941 942 static inline int security_task_getsid(struct task_struct *p) 943 { 944 return 0; 945 } 946 947 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 948 { 949 *secid = 0; 950 } 951 952 static inline int security_task_setnice(struct task_struct *p, int nice) 953 { 954 return cap_task_setnice(p, nice); 955 } 956 957 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 958 { 959 return cap_task_setioprio(p, ioprio); 960 } 961 962 static inline int security_task_getioprio(struct task_struct *p) 963 { 964 return 0; 965 } 966 967 static inline int security_task_prlimit(const struct cred *cred, 968 const struct cred *tcred, 969 unsigned int flags) 970 { 971 return 0; 972 } 973 974 static inline int security_task_setrlimit(struct task_struct *p, 975 unsigned int resource, 976 struct rlimit *new_rlim) 977 { 978 return 0; 979 } 980 981 static inline int security_task_setscheduler(struct task_struct *p) 982 { 983 return cap_task_setscheduler(p); 984 } 985 986 static inline int security_task_getscheduler(struct task_struct *p) 987 { 988 return 0; 989 } 990 991 static inline int security_task_movememory(struct task_struct *p) 992 { 993 return 0; 994 } 995 996 static inline int security_task_kill(struct task_struct *p, 997 struct siginfo *info, int sig, 998 const struct cred *cred) 999 { 1000 return 0; 1001 } 1002 1003 static inline int security_task_prctl(int option, unsigned long arg2, 1004 unsigned long arg3, 1005 unsigned long arg4, 1006 unsigned long arg5) 1007 { 1008 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1009 } 1010 1011 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1012 { } 1013 1014 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1015 short flag) 1016 { 1017 return 0; 1018 } 1019 1020 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1021 { 1022 *secid = 0; 1023 } 1024 1025 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1026 { 1027 return 0; 1028 } 1029 1030 static inline void security_msg_msg_free(struct msg_msg *msg) 1031 { } 1032 1033 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1034 { 1035 return 0; 1036 } 1037 1038 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1039 { } 1040 1041 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1042 int msqflg) 1043 { 1044 return 0; 1045 } 1046 1047 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1048 { 1049 return 0; 1050 } 1051 1052 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1053 struct msg_msg *msg, int msqflg) 1054 { 1055 return 0; 1056 } 1057 1058 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1059 struct msg_msg *msg, 1060 struct task_struct *target, 1061 long type, int mode) 1062 { 1063 return 0; 1064 } 1065 1066 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1067 { 1068 return 0; 1069 } 1070 1071 static inline void security_shm_free(struct kern_ipc_perm *shp) 1072 { } 1073 1074 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1075 int shmflg) 1076 { 1077 return 0; 1078 } 1079 1080 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1081 { 1082 return 0; 1083 } 1084 1085 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1086 char __user *shmaddr, int shmflg) 1087 { 1088 return 0; 1089 } 1090 1091 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1092 { 1093 return 0; 1094 } 1095 1096 static inline void security_sem_free(struct kern_ipc_perm *sma) 1097 { } 1098 1099 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1100 { 1101 return 0; 1102 } 1103 1104 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1105 { 1106 return 0; 1107 } 1108 1109 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1110 struct sembuf *sops, unsigned nsops, 1111 int alter) 1112 { 1113 return 0; 1114 } 1115 1116 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1117 { } 1118 1119 static inline int security_getprocattr(struct task_struct *p, char *name, char **value) 1120 { 1121 return -EINVAL; 1122 } 1123 1124 static inline int security_setprocattr(char *name, void *value, size_t size) 1125 { 1126 return -EINVAL; 1127 } 1128 1129 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1130 { 1131 return 0; 1132 } 1133 1134 static inline int security_ismaclabel(const char *name) 1135 { 1136 return 0; 1137 } 1138 1139 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1140 { 1141 return -EOPNOTSUPP; 1142 } 1143 1144 static inline int security_secctx_to_secid(const char *secdata, 1145 u32 seclen, 1146 u32 *secid) 1147 { 1148 return -EOPNOTSUPP; 1149 } 1150 1151 static inline void security_release_secctx(char *secdata, u32 seclen) 1152 { 1153 } 1154 1155 static inline void security_inode_invalidate_secctx(struct inode *inode) 1156 { 1157 } 1158 1159 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1160 { 1161 return -EOPNOTSUPP; 1162 } 1163 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1164 { 1165 return -EOPNOTSUPP; 1166 } 1167 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1168 { 1169 return -EOPNOTSUPP; 1170 } 1171 #endif /* CONFIG_SECURITY */ 1172 1173 #ifdef CONFIG_SECURITY_NETWORK 1174 1175 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1176 int security_unix_may_send(struct socket *sock, struct socket *other); 1177 int security_socket_create(int family, int type, int protocol, int kern); 1178 int security_socket_post_create(struct socket *sock, int family, 1179 int type, int protocol, int kern); 1180 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1181 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1182 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1183 int security_socket_listen(struct socket *sock, int backlog); 1184 int security_socket_accept(struct socket *sock, struct socket *newsock); 1185 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1186 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1187 int size, int flags); 1188 int security_socket_getsockname(struct socket *sock); 1189 int security_socket_getpeername(struct socket *sock); 1190 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1191 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1192 int security_socket_shutdown(struct socket *sock, int how); 1193 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1194 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1195 int __user *optlen, unsigned len); 1196 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1197 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1198 void security_sk_free(struct sock *sk); 1199 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1200 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1201 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1202 void security_sock_graft(struct sock*sk, struct socket *parent); 1203 int security_inet_conn_request(struct sock *sk, 1204 struct sk_buff *skb, struct request_sock *req); 1205 void security_inet_csk_clone(struct sock *newsk, 1206 const struct request_sock *req); 1207 void security_inet_conn_established(struct sock *sk, 1208 struct sk_buff *skb); 1209 int security_secmark_relabel_packet(u32 secid); 1210 void security_secmark_refcount_inc(void); 1211 void security_secmark_refcount_dec(void); 1212 int security_tun_dev_alloc_security(void **security); 1213 void security_tun_dev_free_security(void *security); 1214 int security_tun_dev_create(void); 1215 int security_tun_dev_attach_queue(void *security); 1216 int security_tun_dev_attach(struct sock *sk, void *security); 1217 int security_tun_dev_open(void *security); 1218 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1219 int security_sctp_bind_connect(struct sock *sk, int optname, 1220 struct sockaddr *address, int addrlen); 1221 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1222 struct sock *newsk); 1223 1224 #else /* CONFIG_SECURITY_NETWORK */ 1225 static inline int security_unix_stream_connect(struct sock *sock, 1226 struct sock *other, 1227 struct sock *newsk) 1228 { 1229 return 0; 1230 } 1231 1232 static inline int security_unix_may_send(struct socket *sock, 1233 struct socket *other) 1234 { 1235 return 0; 1236 } 1237 1238 static inline int security_socket_create(int family, int type, 1239 int protocol, int kern) 1240 { 1241 return 0; 1242 } 1243 1244 static inline int security_socket_post_create(struct socket *sock, 1245 int family, 1246 int type, 1247 int protocol, int kern) 1248 { 1249 return 0; 1250 } 1251 1252 static inline int security_socket_socketpair(struct socket *socka, 1253 struct socket *sockb) 1254 { 1255 return 0; 1256 } 1257 1258 static inline int security_socket_bind(struct socket *sock, 1259 struct sockaddr *address, 1260 int addrlen) 1261 { 1262 return 0; 1263 } 1264 1265 static inline int security_socket_connect(struct socket *sock, 1266 struct sockaddr *address, 1267 int addrlen) 1268 { 1269 return 0; 1270 } 1271 1272 static inline int security_socket_listen(struct socket *sock, int backlog) 1273 { 1274 return 0; 1275 } 1276 1277 static inline int security_socket_accept(struct socket *sock, 1278 struct socket *newsock) 1279 { 1280 return 0; 1281 } 1282 1283 static inline int security_socket_sendmsg(struct socket *sock, 1284 struct msghdr *msg, int size) 1285 { 1286 return 0; 1287 } 1288 1289 static inline int security_socket_recvmsg(struct socket *sock, 1290 struct msghdr *msg, int size, 1291 int flags) 1292 { 1293 return 0; 1294 } 1295 1296 static inline int security_socket_getsockname(struct socket *sock) 1297 { 1298 return 0; 1299 } 1300 1301 static inline int security_socket_getpeername(struct socket *sock) 1302 { 1303 return 0; 1304 } 1305 1306 static inline int security_socket_getsockopt(struct socket *sock, 1307 int level, int optname) 1308 { 1309 return 0; 1310 } 1311 1312 static inline int security_socket_setsockopt(struct socket *sock, 1313 int level, int optname) 1314 { 1315 return 0; 1316 } 1317 1318 static inline int security_socket_shutdown(struct socket *sock, int how) 1319 { 1320 return 0; 1321 } 1322 static inline int security_sock_rcv_skb(struct sock *sk, 1323 struct sk_buff *skb) 1324 { 1325 return 0; 1326 } 1327 1328 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1329 int __user *optlen, unsigned len) 1330 { 1331 return -ENOPROTOOPT; 1332 } 1333 1334 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1335 { 1336 return -ENOPROTOOPT; 1337 } 1338 1339 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1340 { 1341 return 0; 1342 } 1343 1344 static inline void security_sk_free(struct sock *sk) 1345 { 1346 } 1347 1348 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1349 { 1350 } 1351 1352 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1353 { 1354 } 1355 1356 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1357 { 1358 } 1359 1360 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1361 { 1362 } 1363 1364 static inline int security_inet_conn_request(struct sock *sk, 1365 struct sk_buff *skb, struct request_sock *req) 1366 { 1367 return 0; 1368 } 1369 1370 static inline void security_inet_csk_clone(struct sock *newsk, 1371 const struct request_sock *req) 1372 { 1373 } 1374 1375 static inline void security_inet_conn_established(struct sock *sk, 1376 struct sk_buff *skb) 1377 { 1378 } 1379 1380 static inline int security_secmark_relabel_packet(u32 secid) 1381 { 1382 return 0; 1383 } 1384 1385 static inline void security_secmark_refcount_inc(void) 1386 { 1387 } 1388 1389 static inline void security_secmark_refcount_dec(void) 1390 { 1391 } 1392 1393 static inline int security_tun_dev_alloc_security(void **security) 1394 { 1395 return 0; 1396 } 1397 1398 static inline void security_tun_dev_free_security(void *security) 1399 { 1400 } 1401 1402 static inline int security_tun_dev_create(void) 1403 { 1404 return 0; 1405 } 1406 1407 static inline int security_tun_dev_attach_queue(void *security) 1408 { 1409 return 0; 1410 } 1411 1412 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1413 { 1414 return 0; 1415 } 1416 1417 static inline int security_tun_dev_open(void *security) 1418 { 1419 return 0; 1420 } 1421 1422 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1423 struct sk_buff *skb) 1424 { 1425 return 0; 1426 } 1427 1428 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1429 struct sockaddr *address, 1430 int addrlen) 1431 { 1432 return 0; 1433 } 1434 1435 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1436 struct sock *sk, 1437 struct sock *newsk) 1438 { 1439 } 1440 #endif /* CONFIG_SECURITY_NETWORK */ 1441 1442 #ifdef CONFIG_SECURITY_INFINIBAND 1443 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1444 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1445 int security_ib_alloc_security(void **sec); 1446 void security_ib_free_security(void *sec); 1447 #else /* CONFIG_SECURITY_INFINIBAND */ 1448 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1449 { 1450 return 0; 1451 } 1452 1453 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1454 { 1455 return 0; 1456 } 1457 1458 static inline int security_ib_alloc_security(void **sec) 1459 { 1460 return 0; 1461 } 1462 1463 static inline void security_ib_free_security(void *sec) 1464 { 1465 } 1466 #endif /* CONFIG_SECURITY_INFINIBAND */ 1467 1468 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1469 1470 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1471 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1472 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1473 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1474 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1475 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1476 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1477 struct xfrm_sec_ctx *polsec, u32 secid); 1478 int security_xfrm_state_delete(struct xfrm_state *x); 1479 void security_xfrm_state_free(struct xfrm_state *x); 1480 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1481 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1482 struct xfrm_policy *xp, 1483 const struct flowi *fl); 1484 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1485 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1486 1487 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1488 1489 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1490 struct xfrm_user_sec_ctx *sec_ctx, 1491 gfp_t gfp) 1492 { 1493 return 0; 1494 } 1495 1496 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1497 { 1498 return 0; 1499 } 1500 1501 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1502 { 1503 } 1504 1505 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1506 { 1507 return 0; 1508 } 1509 1510 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1511 struct xfrm_user_sec_ctx *sec_ctx) 1512 { 1513 return 0; 1514 } 1515 1516 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1517 struct xfrm_sec_ctx *polsec, u32 secid) 1518 { 1519 return 0; 1520 } 1521 1522 static inline void security_xfrm_state_free(struct xfrm_state *x) 1523 { 1524 } 1525 1526 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1527 { 1528 return 0; 1529 } 1530 1531 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1532 { 1533 return 0; 1534 } 1535 1536 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1537 struct xfrm_policy *xp, const struct flowi *fl) 1538 { 1539 return 1; 1540 } 1541 1542 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1543 { 1544 return 0; 1545 } 1546 1547 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1548 { 1549 } 1550 1551 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1552 1553 #ifdef CONFIG_SECURITY_PATH 1554 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1555 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1556 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1557 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1558 unsigned int dev); 1559 int security_path_truncate(const struct path *path); 1560 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1561 const char *old_name); 1562 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1563 struct dentry *new_dentry); 1564 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1565 const struct path *new_dir, struct dentry *new_dentry, 1566 unsigned int flags); 1567 int security_path_chmod(const struct path *path, umode_t mode); 1568 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1569 int security_path_chroot(const struct path *path); 1570 #else /* CONFIG_SECURITY_PATH */ 1571 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1572 { 1573 return 0; 1574 } 1575 1576 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1577 umode_t mode) 1578 { 1579 return 0; 1580 } 1581 1582 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1583 { 1584 return 0; 1585 } 1586 1587 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1588 umode_t mode, unsigned int dev) 1589 { 1590 return 0; 1591 } 1592 1593 static inline int security_path_truncate(const struct path *path) 1594 { 1595 return 0; 1596 } 1597 1598 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1599 const char *old_name) 1600 { 1601 return 0; 1602 } 1603 1604 static inline int security_path_link(struct dentry *old_dentry, 1605 const struct path *new_dir, 1606 struct dentry *new_dentry) 1607 { 1608 return 0; 1609 } 1610 1611 static inline int security_path_rename(const struct path *old_dir, 1612 struct dentry *old_dentry, 1613 const struct path *new_dir, 1614 struct dentry *new_dentry, 1615 unsigned int flags) 1616 { 1617 return 0; 1618 } 1619 1620 static inline int security_path_chmod(const struct path *path, umode_t mode) 1621 { 1622 return 0; 1623 } 1624 1625 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1626 { 1627 return 0; 1628 } 1629 1630 static inline int security_path_chroot(const struct path *path) 1631 { 1632 return 0; 1633 } 1634 #endif /* CONFIG_SECURITY_PATH */ 1635 1636 #ifdef CONFIG_KEYS 1637 #ifdef CONFIG_SECURITY 1638 1639 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1640 void security_key_free(struct key *key); 1641 int security_key_permission(key_ref_t key_ref, 1642 const struct cred *cred, unsigned perm); 1643 int security_key_getsecurity(struct key *key, char **_buffer); 1644 1645 #else 1646 1647 static inline int security_key_alloc(struct key *key, 1648 const struct cred *cred, 1649 unsigned long flags) 1650 { 1651 return 0; 1652 } 1653 1654 static inline void security_key_free(struct key *key) 1655 { 1656 } 1657 1658 static inline int security_key_permission(key_ref_t key_ref, 1659 const struct cred *cred, 1660 unsigned perm) 1661 { 1662 return 0; 1663 } 1664 1665 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1666 { 1667 *_buffer = NULL; 1668 return 0; 1669 } 1670 1671 #endif 1672 #endif /* CONFIG_KEYS */ 1673 1674 #ifdef CONFIG_AUDIT 1675 #ifdef CONFIG_SECURITY 1676 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1677 int security_audit_rule_known(struct audit_krule *krule); 1678 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1679 struct audit_context *actx); 1680 void security_audit_rule_free(void *lsmrule); 1681 1682 #else 1683 1684 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1685 void **lsmrule) 1686 { 1687 return 0; 1688 } 1689 1690 static inline int security_audit_rule_known(struct audit_krule *krule) 1691 { 1692 return 0; 1693 } 1694 1695 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1696 void *lsmrule, struct audit_context *actx) 1697 { 1698 return 0; 1699 } 1700 1701 static inline void security_audit_rule_free(void *lsmrule) 1702 { } 1703 1704 #endif /* CONFIG_SECURITY */ 1705 #endif /* CONFIG_AUDIT */ 1706 1707 #ifdef CONFIG_SECURITYFS 1708 1709 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1710 struct dentry *parent, void *data, 1711 const struct file_operations *fops); 1712 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1713 struct dentry *securityfs_create_symlink(const char *name, 1714 struct dentry *parent, 1715 const char *target, 1716 const struct inode_operations *iops); 1717 extern void securityfs_remove(struct dentry *dentry); 1718 1719 #else /* CONFIG_SECURITYFS */ 1720 1721 static inline struct dentry *securityfs_create_dir(const char *name, 1722 struct dentry *parent) 1723 { 1724 return ERR_PTR(-ENODEV); 1725 } 1726 1727 static inline struct dentry *securityfs_create_file(const char *name, 1728 umode_t mode, 1729 struct dentry *parent, 1730 void *data, 1731 const struct file_operations *fops) 1732 { 1733 return ERR_PTR(-ENODEV); 1734 } 1735 1736 static inline struct dentry *securityfs_create_symlink(const char *name, 1737 struct dentry *parent, 1738 const char *target, 1739 const struct inode_operations *iops) 1740 { 1741 return ERR_PTR(-ENODEV); 1742 } 1743 1744 static inline void securityfs_remove(struct dentry *dentry) 1745 {} 1746 1747 #endif 1748 1749 #ifdef CONFIG_BPF_SYSCALL 1750 union bpf_attr; 1751 struct bpf_map; 1752 struct bpf_prog; 1753 struct bpf_prog_aux; 1754 #ifdef CONFIG_SECURITY 1755 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1756 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1757 extern int security_bpf_prog(struct bpf_prog *prog); 1758 extern int security_bpf_map_alloc(struct bpf_map *map); 1759 extern void security_bpf_map_free(struct bpf_map *map); 1760 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1761 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1762 #else 1763 static inline int security_bpf(int cmd, union bpf_attr *attr, 1764 unsigned int size) 1765 { 1766 return 0; 1767 } 1768 1769 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1770 { 1771 return 0; 1772 } 1773 1774 static inline int security_bpf_prog(struct bpf_prog *prog) 1775 { 1776 return 0; 1777 } 1778 1779 static inline int security_bpf_map_alloc(struct bpf_map *map) 1780 { 1781 return 0; 1782 } 1783 1784 static inline void security_bpf_map_free(struct bpf_map *map) 1785 { } 1786 1787 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1788 { 1789 return 0; 1790 } 1791 1792 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1793 { } 1794 #endif /* CONFIG_SECURITY */ 1795 #endif /* CONFIG_BPF_SYSCALL */ 1796 1797 #ifdef CONFIG_SECURITY 1798 1799 static inline char *alloc_secdata(void) 1800 { 1801 return (char *)get_zeroed_page(GFP_KERNEL); 1802 } 1803 1804 static inline void free_secdata(void *secdata) 1805 { 1806 free_page((unsigned long)secdata); 1807 } 1808 1809 #else 1810 1811 static inline char *alloc_secdata(void) 1812 { 1813 return (char *)1; 1814 } 1815 1816 static inline void free_secdata(void *secdata) 1817 { } 1818 #endif /* CONFIG_SECURITY */ 1819 1820 #endif /* ! __LINUX_SECURITY_H */ 1821 1822