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 static inline int security_settime(const struct timespec *ts, const struct timezone *tz) 224 { 225 struct timespec64 ts64 = timespec_to_timespec64(*ts); 226 227 return security_settime64(&ts64, tz); 228 } 229 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 230 int security_bprm_set_creds(struct linux_binprm *bprm); 231 int security_bprm_check(struct linux_binprm *bprm); 232 void security_bprm_committing_creds(struct linux_binprm *bprm); 233 void security_bprm_committed_creds(struct linux_binprm *bprm); 234 int security_sb_alloc(struct super_block *sb); 235 void security_sb_free(struct super_block *sb); 236 int security_sb_copy_data(char *orig, char *copy); 237 int security_sb_remount(struct super_block *sb, void *data); 238 int security_sb_kern_mount(struct super_block *sb, int flags, void *data); 239 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 240 int security_sb_statfs(struct dentry *dentry); 241 int security_sb_mount(const char *dev_name, const struct path *path, 242 const char *type, unsigned long flags, void *data); 243 int security_sb_umount(struct vfsmount *mnt, int flags); 244 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 245 int security_sb_set_mnt_opts(struct super_block *sb, 246 struct security_mnt_opts *opts, 247 unsigned long kern_flags, 248 unsigned long *set_kern_flags); 249 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 250 struct super_block *newsb, 251 unsigned long kern_flags, 252 unsigned long *set_kern_flags); 253 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); 254 int security_dentry_init_security(struct dentry *dentry, int mode, 255 const struct qstr *name, void **ctx, 256 u32 *ctxlen); 257 int security_dentry_create_files_as(struct dentry *dentry, int mode, 258 struct qstr *name, 259 const struct cred *old, 260 struct cred *new); 261 262 int security_inode_alloc(struct inode *inode); 263 void security_inode_free(struct inode *inode); 264 int security_inode_init_security(struct inode *inode, struct inode *dir, 265 const struct qstr *qstr, 266 initxattrs initxattrs, void *fs_data); 267 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 268 const struct qstr *qstr, const char **name, 269 void **value, size_t *len); 270 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 271 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 272 struct dentry *new_dentry); 273 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 274 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 275 const char *old_name); 276 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 277 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 278 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 279 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 280 struct inode *new_dir, struct dentry *new_dentry, 281 unsigned int flags); 282 int security_inode_readlink(struct dentry *dentry); 283 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 284 bool rcu); 285 int security_inode_permission(struct inode *inode, int mask); 286 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 287 int security_inode_getattr(const struct path *path); 288 int security_inode_setxattr(struct dentry *dentry, const char *name, 289 const void *value, size_t size, int flags); 290 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 291 const void *value, size_t size, int flags); 292 int security_inode_getxattr(struct dentry *dentry, const char *name); 293 int security_inode_listxattr(struct dentry *dentry); 294 int security_inode_removexattr(struct dentry *dentry, const char *name); 295 int security_inode_need_killpriv(struct dentry *dentry); 296 int security_inode_killpriv(struct dentry *dentry); 297 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 298 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 299 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 300 void security_inode_getsecid(struct inode *inode, u32 *secid); 301 int security_inode_copy_up(struct dentry *src, struct cred **new); 302 int security_inode_copy_up_xattr(const char *name); 303 int security_file_permission(struct file *file, int mask); 304 int security_file_alloc(struct file *file); 305 void security_file_free(struct file *file); 306 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 307 int security_mmap_file(struct file *file, unsigned long prot, 308 unsigned long flags); 309 int security_mmap_addr(unsigned long addr); 310 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 311 unsigned long prot); 312 int security_file_lock(struct file *file, unsigned int cmd); 313 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 314 void security_file_set_fowner(struct file *file); 315 int security_file_send_sigiotask(struct task_struct *tsk, 316 struct fown_struct *fown, int sig); 317 int security_file_receive(struct file *file); 318 int security_file_open(struct file *file, const struct cred *cred); 319 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 320 void security_task_free(struct task_struct *task); 321 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 322 void security_cred_free(struct cred *cred); 323 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 324 void security_transfer_creds(struct cred *new, const struct cred *old); 325 void security_cred_getsecid(const struct cred *c, u32 *secid); 326 int security_kernel_act_as(struct cred *new, u32 secid); 327 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 328 int security_kernel_module_request(char *kmod_name); 329 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 330 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 331 enum kernel_read_file_id id); 332 int security_task_fix_setuid(struct cred *new, const struct cred *old, 333 int flags); 334 int security_task_setpgid(struct task_struct *p, pid_t pgid); 335 int security_task_getpgid(struct task_struct *p); 336 int security_task_getsid(struct task_struct *p); 337 void security_task_getsecid(struct task_struct *p, u32 *secid); 338 int security_task_setnice(struct task_struct *p, int nice); 339 int security_task_setioprio(struct task_struct *p, int ioprio); 340 int security_task_getioprio(struct task_struct *p); 341 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 342 unsigned int flags); 343 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 344 struct rlimit *new_rlim); 345 int security_task_setscheduler(struct task_struct *p); 346 int security_task_getscheduler(struct task_struct *p); 347 int security_task_movememory(struct task_struct *p); 348 int security_task_kill(struct task_struct *p, struct siginfo *info, 349 int sig, const struct cred *cred); 350 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 351 unsigned long arg4, unsigned long arg5); 352 void security_task_to_inode(struct task_struct *p, struct inode *inode); 353 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 354 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 355 int security_msg_msg_alloc(struct msg_msg *msg); 356 void security_msg_msg_free(struct msg_msg *msg); 357 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 358 void security_msg_queue_free(struct kern_ipc_perm *msq); 359 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 360 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 361 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 362 struct msg_msg *msg, int msqflg); 363 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 364 struct task_struct *target, long type, int mode); 365 int security_shm_alloc(struct kern_ipc_perm *shp); 366 void security_shm_free(struct kern_ipc_perm *shp); 367 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 368 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 369 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 370 int security_sem_alloc(struct kern_ipc_perm *sma); 371 void security_sem_free(struct kern_ipc_perm *sma); 372 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 373 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 374 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 375 unsigned nsops, int alter); 376 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 377 int security_getprocattr(struct task_struct *p, char *name, char **value); 378 int security_setprocattr(const char *name, void *value, size_t size); 379 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 380 int security_ismaclabel(const char *name); 381 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 382 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 383 void security_release_secctx(char *secdata, u32 seclen); 384 385 void security_inode_invalidate_secctx(struct inode *inode); 386 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 387 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 388 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 389 #else /* CONFIG_SECURITY */ 390 struct security_mnt_opts { 391 }; 392 393 static inline int call_lsm_notifier(enum lsm_event event, void *data) 394 { 395 return 0; 396 } 397 398 static inline int register_lsm_notifier(struct notifier_block *nb) 399 { 400 return 0; 401 } 402 403 static inline int unregister_lsm_notifier(struct notifier_block *nb) 404 { 405 return 0; 406 } 407 408 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 409 { 410 } 411 412 static inline void security_free_mnt_opts(struct security_mnt_opts *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, int cap) 480 { 481 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT); 482 } 483 484 static inline int security_capable_noaudit(const struct cred *cred, 485 struct user_namespace *ns, int cap) { 486 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 487 } 488 489 static inline int security_quotactl(int cmds, int type, int id, 490 struct super_block *sb) 491 { 492 return 0; 493 } 494 495 static inline int security_quota_on(struct dentry *dentry) 496 { 497 return 0; 498 } 499 500 static inline int security_syslog(int type) 501 { 502 return 0; 503 } 504 505 static inline int security_settime64(const struct timespec64 *ts, 506 const struct timezone *tz) 507 { 508 return cap_settime(ts, tz); 509 } 510 511 static inline int security_settime(const struct timespec *ts, 512 const struct timezone *tz) 513 { 514 struct timespec64 ts64 = timespec_to_timespec64(*ts); 515 516 return cap_settime(&ts64, tz); 517 } 518 519 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 520 { 521 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 522 } 523 524 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 525 { 526 return cap_bprm_set_creds(bprm); 527 } 528 529 static inline int security_bprm_check(struct linux_binprm *bprm) 530 { 531 return 0; 532 } 533 534 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 535 { 536 } 537 538 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 539 { 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_copy_data(char *orig, char *copy) 551 { 552 return 0; 553 } 554 555 static inline int security_sb_remount(struct super_block *sb, void *data) 556 { 557 return 0; 558 } 559 560 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 561 { 562 return 0; 563 } 564 565 static inline int security_sb_show_options(struct seq_file *m, 566 struct super_block *sb) 567 { 568 return 0; 569 } 570 571 static inline int security_sb_statfs(struct dentry *dentry) 572 { 573 return 0; 574 } 575 576 static inline int security_sb_mount(const char *dev_name, const struct path *path, 577 const char *type, unsigned long flags, 578 void *data) 579 { 580 return 0; 581 } 582 583 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 584 { 585 return 0; 586 } 587 588 static inline int security_sb_pivotroot(const struct path *old_path, 589 const struct path *new_path) 590 { 591 return 0; 592 } 593 594 static inline int security_sb_set_mnt_opts(struct super_block *sb, 595 struct security_mnt_opts *opts, 596 unsigned long kern_flags, 597 unsigned long *set_kern_flags) 598 { 599 return 0; 600 } 601 602 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 603 struct super_block *newsb, 604 unsigned long kern_flags, 605 unsigned long *set_kern_flags) 606 { 607 return 0; 608 } 609 610 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 611 { 612 return 0; 613 } 614 615 static inline int security_inode_alloc(struct inode *inode) 616 { 617 return 0; 618 } 619 620 static inline void security_inode_free(struct inode *inode) 621 { } 622 623 static inline int security_dentry_init_security(struct dentry *dentry, 624 int mode, 625 const struct qstr *name, 626 void **ctx, 627 u32 *ctxlen) 628 { 629 return -EOPNOTSUPP; 630 } 631 632 static inline int security_dentry_create_files_as(struct dentry *dentry, 633 int mode, struct qstr *name, 634 const struct cred *old, 635 struct cred *new) 636 { 637 return 0; 638 } 639 640 641 static inline int security_inode_init_security(struct inode *inode, 642 struct inode *dir, 643 const struct qstr *qstr, 644 const initxattrs xattrs, 645 void *fs_data) 646 { 647 return 0; 648 } 649 650 static inline int security_old_inode_init_security(struct inode *inode, 651 struct inode *dir, 652 const struct qstr *qstr, 653 const char **name, 654 void **value, size_t *len) 655 { 656 return -EOPNOTSUPP; 657 } 658 659 static inline int security_inode_create(struct inode *dir, 660 struct dentry *dentry, 661 umode_t mode) 662 { 663 return 0; 664 } 665 666 static inline int security_inode_link(struct dentry *old_dentry, 667 struct inode *dir, 668 struct dentry *new_dentry) 669 { 670 return 0; 671 } 672 673 static inline int security_inode_unlink(struct inode *dir, 674 struct dentry *dentry) 675 { 676 return 0; 677 } 678 679 static inline int security_inode_symlink(struct inode *dir, 680 struct dentry *dentry, 681 const char *old_name) 682 { 683 return 0; 684 } 685 686 static inline int security_inode_mkdir(struct inode *dir, 687 struct dentry *dentry, 688 int mode) 689 { 690 return 0; 691 } 692 693 static inline int security_inode_rmdir(struct inode *dir, 694 struct dentry *dentry) 695 { 696 return 0; 697 } 698 699 static inline int security_inode_mknod(struct inode *dir, 700 struct dentry *dentry, 701 int mode, dev_t dev) 702 { 703 return 0; 704 } 705 706 static inline int security_inode_rename(struct inode *old_dir, 707 struct dentry *old_dentry, 708 struct inode *new_dir, 709 struct dentry *new_dentry, 710 unsigned int flags) 711 { 712 return 0; 713 } 714 715 static inline int security_inode_readlink(struct dentry *dentry) 716 { 717 return 0; 718 } 719 720 static inline int security_inode_follow_link(struct dentry *dentry, 721 struct inode *inode, 722 bool rcu) 723 { 724 return 0; 725 } 726 727 static inline int security_inode_permission(struct inode *inode, int mask) 728 { 729 return 0; 730 } 731 732 static inline int security_inode_setattr(struct dentry *dentry, 733 struct iattr *attr) 734 { 735 return 0; 736 } 737 738 static inline int security_inode_getattr(const struct path *path) 739 { 740 return 0; 741 } 742 743 static inline int security_inode_setxattr(struct dentry *dentry, 744 const char *name, const void *value, size_t size, int flags) 745 { 746 return cap_inode_setxattr(dentry, name, value, size, flags); 747 } 748 749 static inline void security_inode_post_setxattr(struct dentry *dentry, 750 const char *name, const void *value, size_t size, int flags) 751 { } 752 753 static inline int security_inode_getxattr(struct dentry *dentry, 754 const char *name) 755 { 756 return 0; 757 } 758 759 static inline int security_inode_listxattr(struct dentry *dentry) 760 { 761 return 0; 762 } 763 764 static inline int security_inode_removexattr(struct dentry *dentry, 765 const char *name) 766 { 767 return cap_inode_removexattr(dentry, name); 768 } 769 770 static inline int security_inode_need_killpriv(struct dentry *dentry) 771 { 772 return cap_inode_need_killpriv(dentry); 773 } 774 775 static inline int security_inode_killpriv(struct dentry *dentry) 776 { 777 return cap_inode_killpriv(dentry); 778 } 779 780 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 781 { 782 return -EOPNOTSUPP; 783 } 784 785 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 786 { 787 return -EOPNOTSUPP; 788 } 789 790 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 791 { 792 return 0; 793 } 794 795 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 796 { 797 *secid = 0; 798 } 799 800 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 801 { 802 return 0; 803 } 804 805 static inline int security_inode_copy_up_xattr(const char *name) 806 { 807 return -EOPNOTSUPP; 808 } 809 810 static inline int security_file_permission(struct file *file, int mask) 811 { 812 return 0; 813 } 814 815 static inline int security_file_alloc(struct file *file) 816 { 817 return 0; 818 } 819 820 static inline void security_file_free(struct file *file) 821 { } 822 823 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 824 unsigned long arg) 825 { 826 return 0; 827 } 828 829 static inline int security_mmap_file(struct file *file, unsigned long prot, 830 unsigned long flags) 831 { 832 return 0; 833 } 834 835 static inline int security_mmap_addr(unsigned long addr) 836 { 837 return cap_mmap_addr(addr); 838 } 839 840 static inline int security_file_mprotect(struct vm_area_struct *vma, 841 unsigned long reqprot, 842 unsigned long prot) 843 { 844 return 0; 845 } 846 847 static inline int security_file_lock(struct file *file, unsigned int cmd) 848 { 849 return 0; 850 } 851 852 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 853 unsigned long arg) 854 { 855 return 0; 856 } 857 858 static inline void security_file_set_fowner(struct file *file) 859 { 860 return; 861 } 862 863 static inline int security_file_send_sigiotask(struct task_struct *tsk, 864 struct fown_struct *fown, 865 int sig) 866 { 867 return 0; 868 } 869 870 static inline int security_file_receive(struct file *file) 871 { 872 return 0; 873 } 874 875 static inline int security_file_open(struct file *file, 876 const struct cred *cred) 877 { 878 return 0; 879 } 880 881 static inline int security_task_alloc(struct task_struct *task, 882 unsigned long clone_flags) 883 { 884 return 0; 885 } 886 887 static inline void security_task_free(struct task_struct *task) 888 { } 889 890 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 891 { 892 return 0; 893 } 894 895 static inline void security_cred_free(struct cred *cred) 896 { } 897 898 static inline int security_prepare_creds(struct cred *new, 899 const struct cred *old, 900 gfp_t gfp) 901 { 902 return 0; 903 } 904 905 static inline void security_transfer_creds(struct cred *new, 906 const struct cred *old) 907 { 908 } 909 910 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 911 { 912 return 0; 913 } 914 915 static inline int security_kernel_create_files_as(struct cred *cred, 916 struct inode *inode) 917 { 918 return 0; 919 } 920 921 static inline int security_kernel_module_request(char *kmod_name) 922 { 923 return 0; 924 } 925 926 static inline int security_kernel_read_file(struct file *file, 927 enum kernel_read_file_id id) 928 { 929 return 0; 930 } 931 932 static inline int security_kernel_post_read_file(struct file *file, 933 char *buf, loff_t size, 934 enum kernel_read_file_id id) 935 { 936 return 0; 937 } 938 939 static inline int security_task_fix_setuid(struct cred *new, 940 const struct cred *old, 941 int flags) 942 { 943 return cap_task_fix_setuid(new, old, flags); 944 } 945 946 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 947 { 948 return 0; 949 } 950 951 static inline int security_task_getpgid(struct task_struct *p) 952 { 953 return 0; 954 } 955 956 static inline int security_task_getsid(struct task_struct *p) 957 { 958 return 0; 959 } 960 961 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 962 { 963 *secid = 0; 964 } 965 966 static inline int security_task_setnice(struct task_struct *p, int nice) 967 { 968 return cap_task_setnice(p, nice); 969 } 970 971 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 972 { 973 return cap_task_setioprio(p, ioprio); 974 } 975 976 static inline int security_task_getioprio(struct task_struct *p) 977 { 978 return 0; 979 } 980 981 static inline int security_task_prlimit(const struct cred *cred, 982 const struct cred *tcred, 983 unsigned int flags) 984 { 985 return 0; 986 } 987 988 static inline int security_task_setrlimit(struct task_struct *p, 989 unsigned int resource, 990 struct rlimit *new_rlim) 991 { 992 return 0; 993 } 994 995 static inline int security_task_setscheduler(struct task_struct *p) 996 { 997 return cap_task_setscheduler(p); 998 } 999 1000 static inline int security_task_getscheduler(struct task_struct *p) 1001 { 1002 return 0; 1003 } 1004 1005 static inline int security_task_movememory(struct task_struct *p) 1006 { 1007 return 0; 1008 } 1009 1010 static inline int security_task_kill(struct task_struct *p, 1011 struct siginfo *info, int sig, 1012 const struct cred *cred) 1013 { 1014 return 0; 1015 } 1016 1017 static inline int security_task_prctl(int option, unsigned long arg2, 1018 unsigned long arg3, 1019 unsigned long arg4, 1020 unsigned long arg5) 1021 { 1022 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1023 } 1024 1025 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1026 { } 1027 1028 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1029 short flag) 1030 { 1031 return 0; 1032 } 1033 1034 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1035 { 1036 *secid = 0; 1037 } 1038 1039 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1040 { 1041 return 0; 1042 } 1043 1044 static inline void security_msg_msg_free(struct msg_msg *msg) 1045 { } 1046 1047 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1048 { 1049 return 0; 1050 } 1051 1052 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1053 { } 1054 1055 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1056 int msqflg) 1057 { 1058 return 0; 1059 } 1060 1061 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1062 { 1063 return 0; 1064 } 1065 1066 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1067 struct msg_msg *msg, int msqflg) 1068 { 1069 return 0; 1070 } 1071 1072 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1073 struct msg_msg *msg, 1074 struct task_struct *target, 1075 long type, int mode) 1076 { 1077 return 0; 1078 } 1079 1080 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1081 { 1082 return 0; 1083 } 1084 1085 static inline void security_shm_free(struct kern_ipc_perm *shp) 1086 { } 1087 1088 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1089 int shmflg) 1090 { 1091 return 0; 1092 } 1093 1094 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1095 { 1096 return 0; 1097 } 1098 1099 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1100 char __user *shmaddr, int shmflg) 1101 { 1102 return 0; 1103 } 1104 1105 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1106 { 1107 return 0; 1108 } 1109 1110 static inline void security_sem_free(struct kern_ipc_perm *sma) 1111 { } 1112 1113 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1114 { 1115 return 0; 1116 } 1117 1118 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1119 { 1120 return 0; 1121 } 1122 1123 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1124 struct sembuf *sops, unsigned nsops, 1125 int alter) 1126 { 1127 return 0; 1128 } 1129 1130 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1131 { } 1132 1133 static inline int security_getprocattr(struct task_struct *p, char *name, char **value) 1134 { 1135 return -EINVAL; 1136 } 1137 1138 static inline int security_setprocattr(char *name, void *value, size_t size) 1139 { 1140 return -EINVAL; 1141 } 1142 1143 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1144 { 1145 return 0; 1146 } 1147 1148 static inline int security_ismaclabel(const char *name) 1149 { 1150 return 0; 1151 } 1152 1153 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1154 { 1155 return -EOPNOTSUPP; 1156 } 1157 1158 static inline int security_secctx_to_secid(const char *secdata, 1159 u32 seclen, 1160 u32 *secid) 1161 { 1162 return -EOPNOTSUPP; 1163 } 1164 1165 static inline void security_release_secctx(char *secdata, u32 seclen) 1166 { 1167 } 1168 1169 static inline void security_inode_invalidate_secctx(struct inode *inode) 1170 { 1171 } 1172 1173 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1174 { 1175 return -EOPNOTSUPP; 1176 } 1177 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1178 { 1179 return -EOPNOTSUPP; 1180 } 1181 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1182 { 1183 return -EOPNOTSUPP; 1184 } 1185 #endif /* CONFIG_SECURITY */ 1186 1187 #ifdef CONFIG_SECURITY_NETWORK 1188 1189 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1190 int security_unix_may_send(struct socket *sock, struct socket *other); 1191 int security_socket_create(int family, int type, int protocol, int kern); 1192 int security_socket_post_create(struct socket *sock, int family, 1193 int type, int protocol, int kern); 1194 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1195 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1196 int security_socket_listen(struct socket *sock, int backlog); 1197 int security_socket_accept(struct socket *sock, struct socket *newsock); 1198 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1199 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1200 int size, int flags); 1201 int security_socket_getsockname(struct socket *sock); 1202 int security_socket_getpeername(struct socket *sock); 1203 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1204 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1205 int security_socket_shutdown(struct socket *sock, int how); 1206 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1207 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1208 int __user *optlen, unsigned len); 1209 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1210 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1211 void security_sk_free(struct sock *sk); 1212 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1213 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1214 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1215 void security_sock_graft(struct sock*sk, struct socket *parent); 1216 int security_inet_conn_request(struct sock *sk, 1217 struct sk_buff *skb, struct request_sock *req); 1218 void security_inet_csk_clone(struct sock *newsk, 1219 const struct request_sock *req); 1220 void security_inet_conn_established(struct sock *sk, 1221 struct sk_buff *skb); 1222 int security_secmark_relabel_packet(u32 secid); 1223 void security_secmark_refcount_inc(void); 1224 void security_secmark_refcount_dec(void); 1225 int security_tun_dev_alloc_security(void **security); 1226 void security_tun_dev_free_security(void *security); 1227 int security_tun_dev_create(void); 1228 int security_tun_dev_attach_queue(void *security); 1229 int security_tun_dev_attach(struct sock *sk, void *security); 1230 int security_tun_dev_open(void *security); 1231 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1232 int security_sctp_bind_connect(struct sock *sk, int optname, 1233 struct sockaddr *address, int addrlen); 1234 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1235 struct sock *newsk); 1236 1237 #else /* CONFIG_SECURITY_NETWORK */ 1238 static inline int security_unix_stream_connect(struct sock *sock, 1239 struct sock *other, 1240 struct sock *newsk) 1241 { 1242 return 0; 1243 } 1244 1245 static inline int security_unix_may_send(struct socket *sock, 1246 struct socket *other) 1247 { 1248 return 0; 1249 } 1250 1251 static inline int security_socket_create(int family, int type, 1252 int protocol, int kern) 1253 { 1254 return 0; 1255 } 1256 1257 static inline int security_socket_post_create(struct socket *sock, 1258 int family, 1259 int type, 1260 int protocol, int kern) 1261 { 1262 return 0; 1263 } 1264 1265 static inline int security_socket_bind(struct socket *sock, 1266 struct sockaddr *address, 1267 int addrlen) 1268 { 1269 return 0; 1270 } 1271 1272 static inline int security_socket_connect(struct socket *sock, 1273 struct sockaddr *address, 1274 int addrlen) 1275 { 1276 return 0; 1277 } 1278 1279 static inline int security_socket_listen(struct socket *sock, int backlog) 1280 { 1281 return 0; 1282 } 1283 1284 static inline int security_socket_accept(struct socket *sock, 1285 struct socket *newsock) 1286 { 1287 return 0; 1288 } 1289 1290 static inline int security_socket_sendmsg(struct socket *sock, 1291 struct msghdr *msg, int size) 1292 { 1293 return 0; 1294 } 1295 1296 static inline int security_socket_recvmsg(struct socket *sock, 1297 struct msghdr *msg, int size, 1298 int flags) 1299 { 1300 return 0; 1301 } 1302 1303 static inline int security_socket_getsockname(struct socket *sock) 1304 { 1305 return 0; 1306 } 1307 1308 static inline int security_socket_getpeername(struct socket *sock) 1309 { 1310 return 0; 1311 } 1312 1313 static inline int security_socket_getsockopt(struct socket *sock, 1314 int level, int optname) 1315 { 1316 return 0; 1317 } 1318 1319 static inline int security_socket_setsockopt(struct socket *sock, 1320 int level, int optname) 1321 { 1322 return 0; 1323 } 1324 1325 static inline int security_socket_shutdown(struct socket *sock, int how) 1326 { 1327 return 0; 1328 } 1329 static inline int security_sock_rcv_skb(struct sock *sk, 1330 struct sk_buff *skb) 1331 { 1332 return 0; 1333 } 1334 1335 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1336 int __user *optlen, unsigned len) 1337 { 1338 return -ENOPROTOOPT; 1339 } 1340 1341 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1342 { 1343 return -ENOPROTOOPT; 1344 } 1345 1346 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1347 { 1348 return 0; 1349 } 1350 1351 static inline void security_sk_free(struct sock *sk) 1352 { 1353 } 1354 1355 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1356 { 1357 } 1358 1359 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1360 { 1361 } 1362 1363 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1364 { 1365 } 1366 1367 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1368 { 1369 } 1370 1371 static inline int security_inet_conn_request(struct sock *sk, 1372 struct sk_buff *skb, struct request_sock *req) 1373 { 1374 return 0; 1375 } 1376 1377 static inline void security_inet_csk_clone(struct sock *newsk, 1378 const struct request_sock *req) 1379 { 1380 } 1381 1382 static inline void security_inet_conn_established(struct sock *sk, 1383 struct sk_buff *skb) 1384 { 1385 } 1386 1387 static inline int security_secmark_relabel_packet(u32 secid) 1388 { 1389 return 0; 1390 } 1391 1392 static inline void security_secmark_refcount_inc(void) 1393 { 1394 } 1395 1396 static inline void security_secmark_refcount_dec(void) 1397 { 1398 } 1399 1400 static inline int security_tun_dev_alloc_security(void **security) 1401 { 1402 return 0; 1403 } 1404 1405 static inline void security_tun_dev_free_security(void *security) 1406 { 1407 } 1408 1409 static inline int security_tun_dev_create(void) 1410 { 1411 return 0; 1412 } 1413 1414 static inline int security_tun_dev_attach_queue(void *security) 1415 { 1416 return 0; 1417 } 1418 1419 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1420 { 1421 return 0; 1422 } 1423 1424 static inline int security_tun_dev_open(void *security) 1425 { 1426 return 0; 1427 } 1428 1429 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1430 struct sk_buff *skb) 1431 { 1432 return 0; 1433 } 1434 1435 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1436 struct sockaddr *address, 1437 int addrlen) 1438 { 1439 return 0; 1440 } 1441 1442 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1443 struct sock *sk, 1444 struct sock *newsk) 1445 { 1446 } 1447 #endif /* CONFIG_SECURITY_NETWORK */ 1448 1449 #ifdef CONFIG_SECURITY_INFINIBAND 1450 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1451 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1452 int security_ib_alloc_security(void **sec); 1453 void security_ib_free_security(void *sec); 1454 #else /* CONFIG_SECURITY_INFINIBAND */ 1455 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1456 { 1457 return 0; 1458 } 1459 1460 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1461 { 1462 return 0; 1463 } 1464 1465 static inline int security_ib_alloc_security(void **sec) 1466 { 1467 return 0; 1468 } 1469 1470 static inline void security_ib_free_security(void *sec) 1471 { 1472 } 1473 #endif /* CONFIG_SECURITY_INFINIBAND */ 1474 1475 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1476 1477 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1478 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1479 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1480 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1481 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1482 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1483 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1484 struct xfrm_sec_ctx *polsec, u32 secid); 1485 int security_xfrm_state_delete(struct xfrm_state *x); 1486 void security_xfrm_state_free(struct xfrm_state *x); 1487 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1488 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1489 struct xfrm_policy *xp, 1490 const struct flowi *fl); 1491 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1492 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1493 1494 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1495 1496 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1497 struct xfrm_user_sec_ctx *sec_ctx, 1498 gfp_t gfp) 1499 { 1500 return 0; 1501 } 1502 1503 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1504 { 1505 return 0; 1506 } 1507 1508 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1509 { 1510 } 1511 1512 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1513 { 1514 return 0; 1515 } 1516 1517 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1518 struct xfrm_user_sec_ctx *sec_ctx) 1519 { 1520 return 0; 1521 } 1522 1523 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1524 struct xfrm_sec_ctx *polsec, u32 secid) 1525 { 1526 return 0; 1527 } 1528 1529 static inline void security_xfrm_state_free(struct xfrm_state *x) 1530 { 1531 } 1532 1533 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1534 { 1535 return 0; 1536 } 1537 1538 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1539 { 1540 return 0; 1541 } 1542 1543 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1544 struct xfrm_policy *xp, const struct flowi *fl) 1545 { 1546 return 1; 1547 } 1548 1549 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1550 { 1551 return 0; 1552 } 1553 1554 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1555 { 1556 } 1557 1558 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1559 1560 #ifdef CONFIG_SECURITY_PATH 1561 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1562 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1563 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1564 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1565 unsigned int dev); 1566 int security_path_truncate(const struct path *path); 1567 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1568 const char *old_name); 1569 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1570 struct dentry *new_dentry); 1571 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1572 const struct path *new_dir, struct dentry *new_dentry, 1573 unsigned int flags); 1574 int security_path_chmod(const struct path *path, umode_t mode); 1575 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1576 int security_path_chroot(const struct path *path); 1577 #else /* CONFIG_SECURITY_PATH */ 1578 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1579 { 1580 return 0; 1581 } 1582 1583 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1584 umode_t mode) 1585 { 1586 return 0; 1587 } 1588 1589 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1590 { 1591 return 0; 1592 } 1593 1594 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1595 umode_t mode, unsigned int dev) 1596 { 1597 return 0; 1598 } 1599 1600 static inline int security_path_truncate(const struct path *path) 1601 { 1602 return 0; 1603 } 1604 1605 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1606 const char *old_name) 1607 { 1608 return 0; 1609 } 1610 1611 static inline int security_path_link(struct dentry *old_dentry, 1612 const struct path *new_dir, 1613 struct dentry *new_dentry) 1614 { 1615 return 0; 1616 } 1617 1618 static inline int security_path_rename(const struct path *old_dir, 1619 struct dentry *old_dentry, 1620 const struct path *new_dir, 1621 struct dentry *new_dentry, 1622 unsigned int flags) 1623 { 1624 return 0; 1625 } 1626 1627 static inline int security_path_chmod(const struct path *path, umode_t mode) 1628 { 1629 return 0; 1630 } 1631 1632 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1633 { 1634 return 0; 1635 } 1636 1637 static inline int security_path_chroot(const struct path *path) 1638 { 1639 return 0; 1640 } 1641 #endif /* CONFIG_SECURITY_PATH */ 1642 1643 #ifdef CONFIG_KEYS 1644 #ifdef CONFIG_SECURITY 1645 1646 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1647 void security_key_free(struct key *key); 1648 int security_key_permission(key_ref_t key_ref, 1649 const struct cred *cred, unsigned perm); 1650 int security_key_getsecurity(struct key *key, char **_buffer); 1651 1652 #else 1653 1654 static inline int security_key_alloc(struct key *key, 1655 const struct cred *cred, 1656 unsigned long flags) 1657 { 1658 return 0; 1659 } 1660 1661 static inline void security_key_free(struct key *key) 1662 { 1663 } 1664 1665 static inline int security_key_permission(key_ref_t key_ref, 1666 const struct cred *cred, 1667 unsigned perm) 1668 { 1669 return 0; 1670 } 1671 1672 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1673 { 1674 *_buffer = NULL; 1675 return 0; 1676 } 1677 1678 #endif 1679 #endif /* CONFIG_KEYS */ 1680 1681 #ifdef CONFIG_AUDIT 1682 #ifdef CONFIG_SECURITY 1683 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1684 int security_audit_rule_known(struct audit_krule *krule); 1685 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1686 struct audit_context *actx); 1687 void security_audit_rule_free(void *lsmrule); 1688 1689 #else 1690 1691 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1692 void **lsmrule) 1693 { 1694 return 0; 1695 } 1696 1697 static inline int security_audit_rule_known(struct audit_krule *krule) 1698 { 1699 return 0; 1700 } 1701 1702 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1703 void *lsmrule, struct audit_context *actx) 1704 { 1705 return 0; 1706 } 1707 1708 static inline void security_audit_rule_free(void *lsmrule) 1709 { } 1710 1711 #endif /* CONFIG_SECURITY */ 1712 #endif /* CONFIG_AUDIT */ 1713 1714 #ifdef CONFIG_SECURITYFS 1715 1716 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1717 struct dentry *parent, void *data, 1718 const struct file_operations *fops); 1719 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1720 struct dentry *securityfs_create_symlink(const char *name, 1721 struct dentry *parent, 1722 const char *target, 1723 const struct inode_operations *iops); 1724 extern void securityfs_remove(struct dentry *dentry); 1725 1726 #else /* CONFIG_SECURITYFS */ 1727 1728 static inline struct dentry *securityfs_create_dir(const char *name, 1729 struct dentry *parent) 1730 { 1731 return ERR_PTR(-ENODEV); 1732 } 1733 1734 static inline struct dentry *securityfs_create_file(const char *name, 1735 umode_t mode, 1736 struct dentry *parent, 1737 void *data, 1738 const struct file_operations *fops) 1739 { 1740 return ERR_PTR(-ENODEV); 1741 } 1742 1743 static inline struct dentry *securityfs_create_symlink(const char *name, 1744 struct dentry *parent, 1745 const char *target, 1746 const struct inode_operations *iops) 1747 { 1748 return ERR_PTR(-ENODEV); 1749 } 1750 1751 static inline void securityfs_remove(struct dentry *dentry) 1752 {} 1753 1754 #endif 1755 1756 #ifdef CONFIG_BPF_SYSCALL 1757 union bpf_attr; 1758 struct bpf_map; 1759 struct bpf_prog; 1760 struct bpf_prog_aux; 1761 #ifdef CONFIG_SECURITY 1762 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1763 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1764 extern int security_bpf_prog(struct bpf_prog *prog); 1765 extern int security_bpf_map_alloc(struct bpf_map *map); 1766 extern void security_bpf_map_free(struct bpf_map *map); 1767 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1768 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1769 #else 1770 static inline int security_bpf(int cmd, union bpf_attr *attr, 1771 unsigned int size) 1772 { 1773 return 0; 1774 } 1775 1776 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1777 { 1778 return 0; 1779 } 1780 1781 static inline int security_bpf_prog(struct bpf_prog *prog) 1782 { 1783 return 0; 1784 } 1785 1786 static inline int security_bpf_map_alloc(struct bpf_map *map) 1787 { 1788 return 0; 1789 } 1790 1791 static inline void security_bpf_map_free(struct bpf_map *map) 1792 { } 1793 1794 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1795 { 1796 return 0; 1797 } 1798 1799 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1800 { } 1801 #endif /* CONFIG_SECURITY */ 1802 #endif /* CONFIG_BPF_SYSCALL */ 1803 1804 #ifdef CONFIG_SECURITY 1805 1806 static inline char *alloc_secdata(void) 1807 { 1808 return (char *)get_zeroed_page(GFP_KERNEL); 1809 } 1810 1811 static inline void free_secdata(void *secdata) 1812 { 1813 free_page((unsigned long)secdata); 1814 } 1815 1816 #else 1817 1818 static inline char *alloc_secdata(void) 1819 { 1820 return (char *)1; 1821 } 1822 1823 static inline void free_secdata(void *secdata) 1824 { } 1825 #endif /* CONFIG_SECURITY */ 1826 1827 #endif /* ! __LINUX_SECURITY_H */ 1828 1829