1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> 5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> 7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au> 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); 161 162 163 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 164 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 165 #define __data_id_stringify(dummy, str) #str, 166 167 enum kernel_load_data_id { 168 __kernel_read_file_id(__data_id_enumify) 169 }; 170 171 static const char * const kernel_load_data_str[] = { 172 __kernel_read_file_id(__data_id_stringify) 173 }; 174 175 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 176 { 177 if ((unsigned)id >= LOADING_MAX_ID) 178 return kernel_load_data_str[LOADING_UNKNOWN]; 179 180 return kernel_load_data_str[id]; 181 } 182 183 #ifdef CONFIG_SECURITY 184 185 struct security_mnt_opts { 186 char **mnt_opts; 187 int *mnt_opts_flags; 188 int num_mnt_opts; 189 }; 190 191 int call_lsm_notifier(enum lsm_event event, void *data); 192 int register_lsm_notifier(struct notifier_block *nb); 193 int unregister_lsm_notifier(struct notifier_block *nb); 194 195 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 196 { 197 opts->mnt_opts = NULL; 198 opts->mnt_opts_flags = NULL; 199 opts->num_mnt_opts = 0; 200 } 201 202 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 203 { 204 int i; 205 if (opts->mnt_opts) 206 for (i = 0; i < opts->num_mnt_opts; i++) 207 kfree(opts->mnt_opts[i]); 208 kfree(opts->mnt_opts); 209 opts->mnt_opts = NULL; 210 kfree(opts->mnt_opts_flags); 211 opts->mnt_opts_flags = NULL; 212 opts->num_mnt_opts = 0; 213 } 214 215 /* prototypes */ 216 extern int security_init(void); 217 218 /* Security operations */ 219 int security_binder_set_context_mgr(struct task_struct *mgr); 220 int security_binder_transaction(struct task_struct *from, 221 struct task_struct *to); 222 int security_binder_transfer_binder(struct task_struct *from, 223 struct task_struct *to); 224 int security_binder_transfer_file(struct task_struct *from, 225 struct task_struct *to, struct file *file); 226 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 227 int security_ptrace_traceme(struct task_struct *parent); 228 int security_capget(struct task_struct *target, 229 kernel_cap_t *effective, 230 kernel_cap_t *inheritable, 231 kernel_cap_t *permitted); 232 int security_capset(struct cred *new, const struct cred *old, 233 const kernel_cap_t *effective, 234 const kernel_cap_t *inheritable, 235 const kernel_cap_t *permitted); 236 int security_capable(const struct cred *cred, struct user_namespace *ns, 237 int cap); 238 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 239 int cap); 240 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 241 int security_quota_on(struct dentry *dentry); 242 int security_syslog(int type); 243 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 244 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 245 int security_bprm_set_creds(struct linux_binprm *bprm); 246 int security_bprm_check(struct linux_binprm *bprm); 247 void security_bprm_committing_creds(struct linux_binprm *bprm); 248 void security_bprm_committed_creds(struct linux_binprm *bprm); 249 int security_sb_alloc(struct super_block *sb); 250 void security_sb_free(struct super_block *sb); 251 int security_sb_copy_data(char *orig, char *copy); 252 int security_sb_remount(struct super_block *sb, void *data); 253 int security_sb_kern_mount(struct super_block *sb, int flags, void *data); 254 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 255 int security_sb_statfs(struct dentry *dentry); 256 int security_sb_mount(const char *dev_name, const struct path *path, 257 const char *type, unsigned long flags, void *data); 258 int security_sb_umount(struct vfsmount *mnt, int flags); 259 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 260 int security_sb_set_mnt_opts(struct super_block *sb, 261 struct security_mnt_opts *opts, 262 unsigned long kern_flags, 263 unsigned long *set_kern_flags); 264 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 265 struct super_block *newsb, 266 unsigned long kern_flags, 267 unsigned long *set_kern_flags); 268 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); 269 int security_dentry_init_security(struct dentry *dentry, int mode, 270 const struct qstr *name, void **ctx, 271 u32 *ctxlen); 272 int security_dentry_create_files_as(struct dentry *dentry, int mode, 273 struct qstr *name, 274 const struct cred *old, 275 struct cred *new); 276 277 int security_inode_alloc(struct inode *inode); 278 void security_inode_free(struct inode *inode); 279 int security_inode_init_security(struct inode *inode, struct inode *dir, 280 const struct qstr *qstr, 281 initxattrs initxattrs, void *fs_data); 282 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 283 const struct qstr *qstr, const char **name, 284 void **value, size_t *len); 285 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 286 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 287 struct dentry *new_dentry); 288 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 289 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 290 const char *old_name); 291 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 292 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 293 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 294 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 295 struct inode *new_dir, struct dentry *new_dentry, 296 unsigned int flags); 297 int security_inode_readlink(struct dentry *dentry); 298 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 299 bool rcu); 300 int security_inode_permission(struct inode *inode, int mask); 301 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 302 int security_inode_getattr(const struct path *path); 303 int security_inode_setxattr(struct dentry *dentry, const char *name, 304 const void *value, size_t size, int flags); 305 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 306 const void *value, size_t size, int flags); 307 int security_inode_getxattr(struct dentry *dentry, const char *name); 308 int security_inode_listxattr(struct dentry *dentry); 309 int security_inode_removexattr(struct dentry *dentry, const char *name); 310 int security_inode_need_killpriv(struct dentry *dentry); 311 int security_inode_killpriv(struct dentry *dentry); 312 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 313 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 314 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 315 void security_inode_getsecid(struct inode *inode, u32 *secid); 316 int security_inode_copy_up(struct dentry *src, struct cred **new); 317 int security_inode_copy_up_xattr(const char *name); 318 int security_file_permission(struct file *file, int mask); 319 int security_file_alloc(struct file *file); 320 void security_file_free(struct file *file); 321 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 322 int security_mmap_file(struct file *file, unsigned long prot, 323 unsigned long flags); 324 int security_mmap_addr(unsigned long addr); 325 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 326 unsigned long prot); 327 int security_file_lock(struct file *file, unsigned int cmd); 328 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 329 void security_file_set_fowner(struct file *file); 330 int security_file_send_sigiotask(struct task_struct *tsk, 331 struct fown_struct *fown, int sig); 332 int security_file_receive(struct file *file); 333 int security_file_open(struct file *file); 334 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 335 void security_task_free(struct task_struct *task); 336 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 337 void security_cred_free(struct cred *cred); 338 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 339 void security_transfer_creds(struct cred *new, const struct cred *old); 340 void security_cred_getsecid(const struct cred *c, u32 *secid); 341 int security_kernel_act_as(struct cred *new, u32 secid); 342 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 343 int security_kernel_module_request(char *kmod_name); 344 int security_kernel_load_data(enum kernel_load_data_id id); 345 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 346 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 347 enum kernel_read_file_id id); 348 int security_task_fix_setuid(struct cred *new, const struct cred *old, 349 int flags); 350 int security_task_setpgid(struct task_struct *p, pid_t pgid); 351 int security_task_getpgid(struct task_struct *p); 352 int security_task_getsid(struct task_struct *p); 353 void security_task_getsecid(struct task_struct *p, u32 *secid); 354 int security_task_setnice(struct task_struct *p, int nice); 355 int security_task_setioprio(struct task_struct *p, int ioprio); 356 int security_task_getioprio(struct task_struct *p); 357 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 358 unsigned int flags); 359 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 360 struct rlimit *new_rlim); 361 int security_task_setscheduler(struct task_struct *p); 362 int security_task_getscheduler(struct task_struct *p); 363 int security_task_movememory(struct task_struct *p); 364 int security_task_kill(struct task_struct *p, struct siginfo *info, 365 int sig, const struct cred *cred); 366 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 367 unsigned long arg4, unsigned long arg5); 368 void security_task_to_inode(struct task_struct *p, struct inode *inode); 369 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 370 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 371 int security_msg_msg_alloc(struct msg_msg *msg); 372 void security_msg_msg_free(struct msg_msg *msg); 373 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 374 void security_msg_queue_free(struct kern_ipc_perm *msq); 375 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 376 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 377 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 378 struct msg_msg *msg, int msqflg); 379 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 380 struct task_struct *target, long type, int mode); 381 int security_shm_alloc(struct kern_ipc_perm *shp); 382 void security_shm_free(struct kern_ipc_perm *shp); 383 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 384 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 385 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 386 int security_sem_alloc(struct kern_ipc_perm *sma); 387 void security_sem_free(struct kern_ipc_perm *sma); 388 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 389 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 390 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 391 unsigned nsops, int alter); 392 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 393 int security_getprocattr(struct task_struct *p, char *name, char **value); 394 int security_setprocattr(const char *name, void *value, size_t size); 395 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 396 int security_ismaclabel(const char *name); 397 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 398 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 399 void security_release_secctx(char *secdata, u32 seclen); 400 401 void security_inode_invalidate_secctx(struct inode *inode); 402 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 403 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 404 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 405 #else /* CONFIG_SECURITY */ 406 struct security_mnt_opts { 407 }; 408 409 static inline int call_lsm_notifier(enum lsm_event event, void *data) 410 { 411 return 0; 412 } 413 414 static inline int register_lsm_notifier(struct notifier_block *nb) 415 { 416 return 0; 417 } 418 419 static inline int unregister_lsm_notifier(struct notifier_block *nb) 420 { 421 return 0; 422 } 423 424 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 425 { 426 } 427 428 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 429 { 430 } 431 432 /* 433 * This is the default capabilities functionality. Most of these functions 434 * are just stubbed out, but a few must call the proper capable code. 435 */ 436 437 static inline int security_init(void) 438 { 439 return 0; 440 } 441 442 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 443 { 444 return 0; 445 } 446 447 static inline int security_binder_transaction(struct task_struct *from, 448 struct task_struct *to) 449 { 450 return 0; 451 } 452 453 static inline int security_binder_transfer_binder(struct task_struct *from, 454 struct task_struct *to) 455 { 456 return 0; 457 } 458 459 static inline int security_binder_transfer_file(struct task_struct *from, 460 struct task_struct *to, 461 struct file *file) 462 { 463 return 0; 464 } 465 466 static inline int security_ptrace_access_check(struct task_struct *child, 467 unsigned int mode) 468 { 469 return cap_ptrace_access_check(child, mode); 470 } 471 472 static inline int security_ptrace_traceme(struct task_struct *parent) 473 { 474 return cap_ptrace_traceme(parent); 475 } 476 477 static inline int security_capget(struct task_struct *target, 478 kernel_cap_t *effective, 479 kernel_cap_t *inheritable, 480 kernel_cap_t *permitted) 481 { 482 return cap_capget(target, effective, inheritable, permitted); 483 } 484 485 static inline int security_capset(struct cred *new, 486 const struct cred *old, 487 const kernel_cap_t *effective, 488 const kernel_cap_t *inheritable, 489 const kernel_cap_t *permitted) 490 { 491 return cap_capset(new, old, effective, inheritable, permitted); 492 } 493 494 static inline int security_capable(const struct cred *cred, 495 struct user_namespace *ns, int cap) 496 { 497 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT); 498 } 499 500 static inline int security_capable_noaudit(const struct cred *cred, 501 struct user_namespace *ns, int cap) { 502 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 503 } 504 505 static inline int security_quotactl(int cmds, int type, int id, 506 struct super_block *sb) 507 { 508 return 0; 509 } 510 511 static inline int security_quota_on(struct dentry *dentry) 512 { 513 return 0; 514 } 515 516 static inline int security_syslog(int type) 517 { 518 return 0; 519 } 520 521 static inline int security_settime64(const struct timespec64 *ts, 522 const struct timezone *tz) 523 { 524 return cap_settime(ts, tz); 525 } 526 527 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 528 { 529 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 530 } 531 532 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 533 { 534 return cap_bprm_set_creds(bprm); 535 } 536 537 static inline int security_bprm_check(struct linux_binprm *bprm) 538 { 539 return 0; 540 } 541 542 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 543 { 544 } 545 546 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 547 { 548 } 549 550 static inline int security_sb_alloc(struct super_block *sb) 551 { 552 return 0; 553 } 554 555 static inline void security_sb_free(struct super_block *sb) 556 { } 557 558 static inline int security_sb_copy_data(char *orig, char *copy) 559 { 560 return 0; 561 } 562 563 static inline int security_sb_remount(struct super_block *sb, void *data) 564 { 565 return 0; 566 } 567 568 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 569 { 570 return 0; 571 } 572 573 static inline int security_sb_show_options(struct seq_file *m, 574 struct super_block *sb) 575 { 576 return 0; 577 } 578 579 static inline int security_sb_statfs(struct dentry *dentry) 580 { 581 return 0; 582 } 583 584 static inline int security_sb_mount(const char *dev_name, const struct path *path, 585 const char *type, unsigned long flags, 586 void *data) 587 { 588 return 0; 589 } 590 591 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 592 { 593 return 0; 594 } 595 596 static inline int security_sb_pivotroot(const struct path *old_path, 597 const struct path *new_path) 598 { 599 return 0; 600 } 601 602 static inline int security_sb_set_mnt_opts(struct super_block *sb, 603 struct security_mnt_opts *opts, 604 unsigned long kern_flags, 605 unsigned long *set_kern_flags) 606 { 607 return 0; 608 } 609 610 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 611 struct super_block *newsb, 612 unsigned long kern_flags, 613 unsigned long *set_kern_flags) 614 { 615 return 0; 616 } 617 618 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 619 { 620 return 0; 621 } 622 623 static inline int security_inode_alloc(struct inode *inode) 624 { 625 return 0; 626 } 627 628 static inline void security_inode_free(struct inode *inode) 629 { } 630 631 static inline int security_dentry_init_security(struct dentry *dentry, 632 int mode, 633 const struct qstr *name, 634 void **ctx, 635 u32 *ctxlen) 636 { 637 return -EOPNOTSUPP; 638 } 639 640 static inline int security_dentry_create_files_as(struct dentry *dentry, 641 int mode, struct qstr *name, 642 const struct cred *old, 643 struct cred *new) 644 { 645 return 0; 646 } 647 648 649 static inline int security_inode_init_security(struct inode *inode, 650 struct inode *dir, 651 const struct qstr *qstr, 652 const initxattrs xattrs, 653 void *fs_data) 654 { 655 return 0; 656 } 657 658 static inline int security_old_inode_init_security(struct inode *inode, 659 struct inode *dir, 660 const struct qstr *qstr, 661 const char **name, 662 void **value, size_t *len) 663 { 664 return -EOPNOTSUPP; 665 } 666 667 static inline int security_inode_create(struct inode *dir, 668 struct dentry *dentry, 669 umode_t mode) 670 { 671 return 0; 672 } 673 674 static inline int security_inode_link(struct dentry *old_dentry, 675 struct inode *dir, 676 struct dentry *new_dentry) 677 { 678 return 0; 679 } 680 681 static inline int security_inode_unlink(struct inode *dir, 682 struct dentry *dentry) 683 { 684 return 0; 685 } 686 687 static inline int security_inode_symlink(struct inode *dir, 688 struct dentry *dentry, 689 const char *old_name) 690 { 691 return 0; 692 } 693 694 static inline int security_inode_mkdir(struct inode *dir, 695 struct dentry *dentry, 696 int mode) 697 { 698 return 0; 699 } 700 701 static inline int security_inode_rmdir(struct inode *dir, 702 struct dentry *dentry) 703 { 704 return 0; 705 } 706 707 static inline int security_inode_mknod(struct inode *dir, 708 struct dentry *dentry, 709 int mode, dev_t dev) 710 { 711 return 0; 712 } 713 714 static inline int security_inode_rename(struct inode *old_dir, 715 struct dentry *old_dentry, 716 struct inode *new_dir, 717 struct dentry *new_dentry, 718 unsigned int flags) 719 { 720 return 0; 721 } 722 723 static inline int security_inode_readlink(struct dentry *dentry) 724 { 725 return 0; 726 } 727 728 static inline int security_inode_follow_link(struct dentry *dentry, 729 struct inode *inode, 730 bool rcu) 731 { 732 return 0; 733 } 734 735 static inline int security_inode_permission(struct inode *inode, int mask) 736 { 737 return 0; 738 } 739 740 static inline int security_inode_setattr(struct dentry *dentry, 741 struct iattr *attr) 742 { 743 return 0; 744 } 745 746 static inline int security_inode_getattr(const struct path *path) 747 { 748 return 0; 749 } 750 751 static inline int security_inode_setxattr(struct dentry *dentry, 752 const char *name, const void *value, size_t size, int flags) 753 { 754 return cap_inode_setxattr(dentry, name, value, size, flags); 755 } 756 757 static inline void security_inode_post_setxattr(struct dentry *dentry, 758 const char *name, const void *value, size_t size, int flags) 759 { } 760 761 static inline int security_inode_getxattr(struct dentry *dentry, 762 const char *name) 763 { 764 return 0; 765 } 766 767 static inline int security_inode_listxattr(struct dentry *dentry) 768 { 769 return 0; 770 } 771 772 static inline int security_inode_removexattr(struct dentry *dentry, 773 const char *name) 774 { 775 return cap_inode_removexattr(dentry, name); 776 } 777 778 static inline int security_inode_need_killpriv(struct dentry *dentry) 779 { 780 return cap_inode_need_killpriv(dentry); 781 } 782 783 static inline int security_inode_killpriv(struct dentry *dentry) 784 { 785 return cap_inode_killpriv(dentry); 786 } 787 788 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 789 { 790 return -EOPNOTSUPP; 791 } 792 793 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 794 { 795 return -EOPNOTSUPP; 796 } 797 798 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 799 { 800 return 0; 801 } 802 803 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 804 { 805 *secid = 0; 806 } 807 808 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 809 { 810 return 0; 811 } 812 813 static inline int security_inode_copy_up_xattr(const char *name) 814 { 815 return -EOPNOTSUPP; 816 } 817 818 static inline int security_file_permission(struct file *file, int mask) 819 { 820 return 0; 821 } 822 823 static inline int security_file_alloc(struct file *file) 824 { 825 return 0; 826 } 827 828 static inline void security_file_free(struct file *file) 829 { } 830 831 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 832 unsigned long arg) 833 { 834 return 0; 835 } 836 837 static inline int security_mmap_file(struct file *file, unsigned long prot, 838 unsigned long flags) 839 { 840 return 0; 841 } 842 843 static inline int security_mmap_addr(unsigned long addr) 844 { 845 return cap_mmap_addr(addr); 846 } 847 848 static inline int security_file_mprotect(struct vm_area_struct *vma, 849 unsigned long reqprot, 850 unsigned long prot) 851 { 852 return 0; 853 } 854 855 static inline int security_file_lock(struct file *file, unsigned int cmd) 856 { 857 return 0; 858 } 859 860 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 861 unsigned long arg) 862 { 863 return 0; 864 } 865 866 static inline void security_file_set_fowner(struct file *file) 867 { 868 return; 869 } 870 871 static inline int security_file_send_sigiotask(struct task_struct *tsk, 872 struct fown_struct *fown, 873 int sig) 874 { 875 return 0; 876 } 877 878 static inline int security_file_receive(struct file *file) 879 { 880 return 0; 881 } 882 883 static inline int security_file_open(struct file *file) 884 { 885 return 0; 886 } 887 888 static inline int security_task_alloc(struct task_struct *task, 889 unsigned long clone_flags) 890 { 891 return 0; 892 } 893 894 static inline void security_task_free(struct task_struct *task) 895 { } 896 897 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 898 { 899 return 0; 900 } 901 902 static inline void security_cred_free(struct cred *cred) 903 { } 904 905 static inline int security_prepare_creds(struct cred *new, 906 const struct cred *old, 907 gfp_t gfp) 908 { 909 return 0; 910 } 911 912 static inline void security_transfer_creds(struct cred *new, 913 const struct cred *old) 914 { 915 } 916 917 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 918 { 919 return 0; 920 } 921 922 static inline int security_kernel_create_files_as(struct cred *cred, 923 struct inode *inode) 924 { 925 return 0; 926 } 927 928 static inline int security_kernel_module_request(char *kmod_name) 929 { 930 return 0; 931 } 932 933 static inline int security_kernel_load_data(enum kernel_load_data_id id) 934 { 935 return 0; 936 } 937 938 static inline int security_kernel_read_file(struct file *file, 939 enum kernel_read_file_id id) 940 { 941 return 0; 942 } 943 944 static inline int security_kernel_post_read_file(struct file *file, 945 char *buf, loff_t size, 946 enum kernel_read_file_id id) 947 { 948 return 0; 949 } 950 951 static inline int security_task_fix_setuid(struct cred *new, 952 const struct cred *old, 953 int flags) 954 { 955 return cap_task_fix_setuid(new, old, flags); 956 } 957 958 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 959 { 960 return 0; 961 } 962 963 static inline int security_task_getpgid(struct task_struct *p) 964 { 965 return 0; 966 } 967 968 static inline int security_task_getsid(struct task_struct *p) 969 { 970 return 0; 971 } 972 973 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 974 { 975 *secid = 0; 976 } 977 978 static inline int security_task_setnice(struct task_struct *p, int nice) 979 { 980 return cap_task_setnice(p, nice); 981 } 982 983 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 984 { 985 return cap_task_setioprio(p, ioprio); 986 } 987 988 static inline int security_task_getioprio(struct task_struct *p) 989 { 990 return 0; 991 } 992 993 static inline int security_task_prlimit(const struct cred *cred, 994 const struct cred *tcred, 995 unsigned int flags) 996 { 997 return 0; 998 } 999 1000 static inline int security_task_setrlimit(struct task_struct *p, 1001 unsigned int resource, 1002 struct rlimit *new_rlim) 1003 { 1004 return 0; 1005 } 1006 1007 static inline int security_task_setscheduler(struct task_struct *p) 1008 { 1009 return cap_task_setscheduler(p); 1010 } 1011 1012 static inline int security_task_getscheduler(struct task_struct *p) 1013 { 1014 return 0; 1015 } 1016 1017 static inline int security_task_movememory(struct task_struct *p) 1018 { 1019 return 0; 1020 } 1021 1022 static inline int security_task_kill(struct task_struct *p, 1023 struct siginfo *info, int sig, 1024 const struct cred *cred) 1025 { 1026 return 0; 1027 } 1028 1029 static inline int security_task_prctl(int option, unsigned long arg2, 1030 unsigned long arg3, 1031 unsigned long arg4, 1032 unsigned long arg5) 1033 { 1034 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1035 } 1036 1037 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1038 { } 1039 1040 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1041 short flag) 1042 { 1043 return 0; 1044 } 1045 1046 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1047 { 1048 *secid = 0; 1049 } 1050 1051 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1052 { 1053 return 0; 1054 } 1055 1056 static inline void security_msg_msg_free(struct msg_msg *msg) 1057 { } 1058 1059 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1060 { 1061 return 0; 1062 } 1063 1064 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1065 { } 1066 1067 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1068 int msqflg) 1069 { 1070 return 0; 1071 } 1072 1073 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1074 { 1075 return 0; 1076 } 1077 1078 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1079 struct msg_msg *msg, int msqflg) 1080 { 1081 return 0; 1082 } 1083 1084 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1085 struct msg_msg *msg, 1086 struct task_struct *target, 1087 long type, int mode) 1088 { 1089 return 0; 1090 } 1091 1092 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1093 { 1094 return 0; 1095 } 1096 1097 static inline void security_shm_free(struct kern_ipc_perm *shp) 1098 { } 1099 1100 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1101 int shmflg) 1102 { 1103 return 0; 1104 } 1105 1106 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1107 { 1108 return 0; 1109 } 1110 1111 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1112 char __user *shmaddr, int shmflg) 1113 { 1114 return 0; 1115 } 1116 1117 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1118 { 1119 return 0; 1120 } 1121 1122 static inline void security_sem_free(struct kern_ipc_perm *sma) 1123 { } 1124 1125 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1126 { 1127 return 0; 1128 } 1129 1130 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1131 { 1132 return 0; 1133 } 1134 1135 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1136 struct sembuf *sops, unsigned nsops, 1137 int alter) 1138 { 1139 return 0; 1140 } 1141 1142 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1143 { } 1144 1145 static inline int security_getprocattr(struct task_struct *p, char *name, char **value) 1146 { 1147 return -EINVAL; 1148 } 1149 1150 static inline int security_setprocattr(char *name, void *value, size_t size) 1151 { 1152 return -EINVAL; 1153 } 1154 1155 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1156 { 1157 return 0; 1158 } 1159 1160 static inline int security_ismaclabel(const char *name) 1161 { 1162 return 0; 1163 } 1164 1165 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1166 { 1167 return -EOPNOTSUPP; 1168 } 1169 1170 static inline int security_secctx_to_secid(const char *secdata, 1171 u32 seclen, 1172 u32 *secid) 1173 { 1174 return -EOPNOTSUPP; 1175 } 1176 1177 static inline void security_release_secctx(char *secdata, u32 seclen) 1178 { 1179 } 1180 1181 static inline void security_inode_invalidate_secctx(struct inode *inode) 1182 { 1183 } 1184 1185 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1186 { 1187 return -EOPNOTSUPP; 1188 } 1189 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1190 { 1191 return -EOPNOTSUPP; 1192 } 1193 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1194 { 1195 return -EOPNOTSUPP; 1196 } 1197 #endif /* CONFIG_SECURITY */ 1198 1199 #ifdef CONFIG_SECURITY_NETWORK 1200 1201 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1202 int security_unix_may_send(struct socket *sock, struct socket *other); 1203 int security_socket_create(int family, int type, int protocol, int kern); 1204 int security_socket_post_create(struct socket *sock, int family, 1205 int type, int protocol, int kern); 1206 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1207 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1208 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1209 int security_socket_listen(struct socket *sock, int backlog); 1210 int security_socket_accept(struct socket *sock, struct socket *newsock); 1211 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1212 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1213 int size, int flags); 1214 int security_socket_getsockname(struct socket *sock); 1215 int security_socket_getpeername(struct socket *sock); 1216 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1217 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1218 int security_socket_shutdown(struct socket *sock, int how); 1219 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1220 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1221 int __user *optlen, unsigned len); 1222 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1223 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1224 void security_sk_free(struct sock *sk); 1225 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1226 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1227 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1228 void security_sock_graft(struct sock*sk, struct socket *parent); 1229 int security_inet_conn_request(struct sock *sk, 1230 struct sk_buff *skb, struct request_sock *req); 1231 void security_inet_csk_clone(struct sock *newsk, 1232 const struct request_sock *req); 1233 void security_inet_conn_established(struct sock *sk, 1234 struct sk_buff *skb); 1235 int security_secmark_relabel_packet(u32 secid); 1236 void security_secmark_refcount_inc(void); 1237 void security_secmark_refcount_dec(void); 1238 int security_tun_dev_alloc_security(void **security); 1239 void security_tun_dev_free_security(void *security); 1240 int security_tun_dev_create(void); 1241 int security_tun_dev_attach_queue(void *security); 1242 int security_tun_dev_attach(struct sock *sk, void *security); 1243 int security_tun_dev_open(void *security); 1244 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1245 int security_sctp_bind_connect(struct sock *sk, int optname, 1246 struct sockaddr *address, int addrlen); 1247 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1248 struct sock *newsk); 1249 1250 #else /* CONFIG_SECURITY_NETWORK */ 1251 static inline int security_unix_stream_connect(struct sock *sock, 1252 struct sock *other, 1253 struct sock *newsk) 1254 { 1255 return 0; 1256 } 1257 1258 static inline int security_unix_may_send(struct socket *sock, 1259 struct socket *other) 1260 { 1261 return 0; 1262 } 1263 1264 static inline int security_socket_create(int family, int type, 1265 int protocol, int kern) 1266 { 1267 return 0; 1268 } 1269 1270 static inline int security_socket_post_create(struct socket *sock, 1271 int family, 1272 int type, 1273 int protocol, int kern) 1274 { 1275 return 0; 1276 } 1277 1278 static inline int security_socket_socketpair(struct socket *socka, 1279 struct socket *sockb) 1280 { 1281 return 0; 1282 } 1283 1284 static inline int security_socket_bind(struct socket *sock, 1285 struct sockaddr *address, 1286 int addrlen) 1287 { 1288 return 0; 1289 } 1290 1291 static inline int security_socket_connect(struct socket *sock, 1292 struct sockaddr *address, 1293 int addrlen) 1294 { 1295 return 0; 1296 } 1297 1298 static inline int security_socket_listen(struct socket *sock, int backlog) 1299 { 1300 return 0; 1301 } 1302 1303 static inline int security_socket_accept(struct socket *sock, 1304 struct socket *newsock) 1305 { 1306 return 0; 1307 } 1308 1309 static inline int security_socket_sendmsg(struct socket *sock, 1310 struct msghdr *msg, int size) 1311 { 1312 return 0; 1313 } 1314 1315 static inline int security_socket_recvmsg(struct socket *sock, 1316 struct msghdr *msg, int size, 1317 int flags) 1318 { 1319 return 0; 1320 } 1321 1322 static inline int security_socket_getsockname(struct socket *sock) 1323 { 1324 return 0; 1325 } 1326 1327 static inline int security_socket_getpeername(struct socket *sock) 1328 { 1329 return 0; 1330 } 1331 1332 static inline int security_socket_getsockopt(struct socket *sock, 1333 int level, int optname) 1334 { 1335 return 0; 1336 } 1337 1338 static inline int security_socket_setsockopt(struct socket *sock, 1339 int level, int optname) 1340 { 1341 return 0; 1342 } 1343 1344 static inline int security_socket_shutdown(struct socket *sock, int how) 1345 { 1346 return 0; 1347 } 1348 static inline int security_sock_rcv_skb(struct sock *sk, 1349 struct sk_buff *skb) 1350 { 1351 return 0; 1352 } 1353 1354 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1355 int __user *optlen, unsigned len) 1356 { 1357 return -ENOPROTOOPT; 1358 } 1359 1360 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1361 { 1362 return -ENOPROTOOPT; 1363 } 1364 1365 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1366 { 1367 return 0; 1368 } 1369 1370 static inline void security_sk_free(struct sock *sk) 1371 { 1372 } 1373 1374 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1375 { 1376 } 1377 1378 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1379 { 1380 } 1381 1382 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1383 { 1384 } 1385 1386 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1387 { 1388 } 1389 1390 static inline int security_inet_conn_request(struct sock *sk, 1391 struct sk_buff *skb, struct request_sock *req) 1392 { 1393 return 0; 1394 } 1395 1396 static inline void security_inet_csk_clone(struct sock *newsk, 1397 const struct request_sock *req) 1398 { 1399 } 1400 1401 static inline void security_inet_conn_established(struct sock *sk, 1402 struct sk_buff *skb) 1403 { 1404 } 1405 1406 static inline int security_secmark_relabel_packet(u32 secid) 1407 { 1408 return 0; 1409 } 1410 1411 static inline void security_secmark_refcount_inc(void) 1412 { 1413 } 1414 1415 static inline void security_secmark_refcount_dec(void) 1416 { 1417 } 1418 1419 static inline int security_tun_dev_alloc_security(void **security) 1420 { 1421 return 0; 1422 } 1423 1424 static inline void security_tun_dev_free_security(void *security) 1425 { 1426 } 1427 1428 static inline int security_tun_dev_create(void) 1429 { 1430 return 0; 1431 } 1432 1433 static inline int security_tun_dev_attach_queue(void *security) 1434 { 1435 return 0; 1436 } 1437 1438 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1439 { 1440 return 0; 1441 } 1442 1443 static inline int security_tun_dev_open(void *security) 1444 { 1445 return 0; 1446 } 1447 1448 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1449 struct sk_buff *skb) 1450 { 1451 return 0; 1452 } 1453 1454 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1455 struct sockaddr *address, 1456 int addrlen) 1457 { 1458 return 0; 1459 } 1460 1461 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1462 struct sock *sk, 1463 struct sock *newsk) 1464 { 1465 } 1466 #endif /* CONFIG_SECURITY_NETWORK */ 1467 1468 #ifdef CONFIG_SECURITY_INFINIBAND 1469 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1470 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1471 int security_ib_alloc_security(void **sec); 1472 void security_ib_free_security(void *sec); 1473 #else /* CONFIG_SECURITY_INFINIBAND */ 1474 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1475 { 1476 return 0; 1477 } 1478 1479 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1480 { 1481 return 0; 1482 } 1483 1484 static inline int security_ib_alloc_security(void **sec) 1485 { 1486 return 0; 1487 } 1488 1489 static inline void security_ib_free_security(void *sec) 1490 { 1491 } 1492 #endif /* CONFIG_SECURITY_INFINIBAND */ 1493 1494 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1495 1496 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1497 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1498 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1499 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1500 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1501 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1502 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1503 struct xfrm_sec_ctx *polsec, u32 secid); 1504 int security_xfrm_state_delete(struct xfrm_state *x); 1505 void security_xfrm_state_free(struct xfrm_state *x); 1506 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1507 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1508 struct xfrm_policy *xp, 1509 const struct flowi *fl); 1510 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1511 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1512 1513 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1514 1515 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1516 struct xfrm_user_sec_ctx *sec_ctx, 1517 gfp_t gfp) 1518 { 1519 return 0; 1520 } 1521 1522 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1523 { 1524 return 0; 1525 } 1526 1527 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1528 { 1529 } 1530 1531 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1532 { 1533 return 0; 1534 } 1535 1536 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1537 struct xfrm_user_sec_ctx *sec_ctx) 1538 { 1539 return 0; 1540 } 1541 1542 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1543 struct xfrm_sec_ctx *polsec, u32 secid) 1544 { 1545 return 0; 1546 } 1547 1548 static inline void security_xfrm_state_free(struct xfrm_state *x) 1549 { 1550 } 1551 1552 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1553 { 1554 return 0; 1555 } 1556 1557 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1558 { 1559 return 0; 1560 } 1561 1562 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1563 struct xfrm_policy *xp, const struct flowi *fl) 1564 { 1565 return 1; 1566 } 1567 1568 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1569 { 1570 return 0; 1571 } 1572 1573 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1574 { 1575 } 1576 1577 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1578 1579 #ifdef CONFIG_SECURITY_PATH 1580 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1581 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1582 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1583 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1584 unsigned int dev); 1585 int security_path_truncate(const struct path *path); 1586 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1587 const char *old_name); 1588 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1589 struct dentry *new_dentry); 1590 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1591 const struct path *new_dir, struct dentry *new_dentry, 1592 unsigned int flags); 1593 int security_path_chmod(const struct path *path, umode_t mode); 1594 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1595 int security_path_chroot(const struct path *path); 1596 #else /* CONFIG_SECURITY_PATH */ 1597 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1598 { 1599 return 0; 1600 } 1601 1602 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1603 umode_t mode) 1604 { 1605 return 0; 1606 } 1607 1608 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1609 { 1610 return 0; 1611 } 1612 1613 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1614 umode_t mode, unsigned int dev) 1615 { 1616 return 0; 1617 } 1618 1619 static inline int security_path_truncate(const struct path *path) 1620 { 1621 return 0; 1622 } 1623 1624 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1625 const char *old_name) 1626 { 1627 return 0; 1628 } 1629 1630 static inline int security_path_link(struct dentry *old_dentry, 1631 const struct path *new_dir, 1632 struct dentry *new_dentry) 1633 { 1634 return 0; 1635 } 1636 1637 static inline int security_path_rename(const struct path *old_dir, 1638 struct dentry *old_dentry, 1639 const struct path *new_dir, 1640 struct dentry *new_dentry, 1641 unsigned int flags) 1642 { 1643 return 0; 1644 } 1645 1646 static inline int security_path_chmod(const struct path *path, umode_t mode) 1647 { 1648 return 0; 1649 } 1650 1651 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1652 { 1653 return 0; 1654 } 1655 1656 static inline int security_path_chroot(const struct path *path) 1657 { 1658 return 0; 1659 } 1660 #endif /* CONFIG_SECURITY_PATH */ 1661 1662 #ifdef CONFIG_KEYS 1663 #ifdef CONFIG_SECURITY 1664 1665 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1666 void security_key_free(struct key *key); 1667 int security_key_permission(key_ref_t key_ref, 1668 const struct cred *cred, unsigned perm); 1669 int security_key_getsecurity(struct key *key, char **_buffer); 1670 1671 #else 1672 1673 static inline int security_key_alloc(struct key *key, 1674 const struct cred *cred, 1675 unsigned long flags) 1676 { 1677 return 0; 1678 } 1679 1680 static inline void security_key_free(struct key *key) 1681 { 1682 } 1683 1684 static inline int security_key_permission(key_ref_t key_ref, 1685 const struct cred *cred, 1686 unsigned perm) 1687 { 1688 return 0; 1689 } 1690 1691 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1692 { 1693 *_buffer = NULL; 1694 return 0; 1695 } 1696 1697 #endif 1698 #endif /* CONFIG_KEYS */ 1699 1700 #ifdef CONFIG_AUDIT 1701 #ifdef CONFIG_SECURITY 1702 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1703 int security_audit_rule_known(struct audit_krule *krule); 1704 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1705 struct audit_context *actx); 1706 void security_audit_rule_free(void *lsmrule); 1707 1708 #else 1709 1710 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1711 void **lsmrule) 1712 { 1713 return 0; 1714 } 1715 1716 static inline int security_audit_rule_known(struct audit_krule *krule) 1717 { 1718 return 0; 1719 } 1720 1721 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1722 void *lsmrule, struct audit_context *actx) 1723 { 1724 return 0; 1725 } 1726 1727 static inline void security_audit_rule_free(void *lsmrule) 1728 { } 1729 1730 #endif /* CONFIG_SECURITY */ 1731 #endif /* CONFIG_AUDIT */ 1732 1733 #ifdef CONFIG_SECURITYFS 1734 1735 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1736 struct dentry *parent, void *data, 1737 const struct file_operations *fops); 1738 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1739 struct dentry *securityfs_create_symlink(const char *name, 1740 struct dentry *parent, 1741 const char *target, 1742 const struct inode_operations *iops); 1743 extern void securityfs_remove(struct dentry *dentry); 1744 1745 #else /* CONFIG_SECURITYFS */ 1746 1747 static inline struct dentry *securityfs_create_dir(const char *name, 1748 struct dentry *parent) 1749 { 1750 return ERR_PTR(-ENODEV); 1751 } 1752 1753 static inline struct dentry *securityfs_create_file(const char *name, 1754 umode_t mode, 1755 struct dentry *parent, 1756 void *data, 1757 const struct file_operations *fops) 1758 { 1759 return ERR_PTR(-ENODEV); 1760 } 1761 1762 static inline struct dentry *securityfs_create_symlink(const char *name, 1763 struct dentry *parent, 1764 const char *target, 1765 const struct inode_operations *iops) 1766 { 1767 return ERR_PTR(-ENODEV); 1768 } 1769 1770 static inline void securityfs_remove(struct dentry *dentry) 1771 {} 1772 1773 #endif 1774 1775 #ifdef CONFIG_BPF_SYSCALL 1776 union bpf_attr; 1777 struct bpf_map; 1778 struct bpf_prog; 1779 struct bpf_prog_aux; 1780 #ifdef CONFIG_SECURITY 1781 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1782 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1783 extern int security_bpf_prog(struct bpf_prog *prog); 1784 extern int security_bpf_map_alloc(struct bpf_map *map); 1785 extern void security_bpf_map_free(struct bpf_map *map); 1786 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1787 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1788 #else 1789 static inline int security_bpf(int cmd, union bpf_attr *attr, 1790 unsigned int size) 1791 { 1792 return 0; 1793 } 1794 1795 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1796 { 1797 return 0; 1798 } 1799 1800 static inline int security_bpf_prog(struct bpf_prog *prog) 1801 { 1802 return 0; 1803 } 1804 1805 static inline int security_bpf_map_alloc(struct bpf_map *map) 1806 { 1807 return 0; 1808 } 1809 1810 static inline void security_bpf_map_free(struct bpf_map *map) 1811 { } 1812 1813 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1814 { 1815 return 0; 1816 } 1817 1818 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1819 { } 1820 #endif /* CONFIG_SECURITY */ 1821 #endif /* CONFIG_BPF_SYSCALL */ 1822 1823 #ifdef CONFIG_SECURITY 1824 1825 static inline char *alloc_secdata(void) 1826 { 1827 return (char *)get_zeroed_page(GFP_KERNEL); 1828 } 1829 1830 static inline void free_secdata(void *secdata) 1831 { 1832 free_page((unsigned long)secdata); 1833 } 1834 1835 #else 1836 1837 static inline char *alloc_secdata(void) 1838 { 1839 return (char *)1; 1840 } 1841 1842 static inline void free_secdata(void *secdata) 1843 { } 1844 #endif /* CONFIG_SECURITY */ 1845 1846 #endif /* ! __LINUX_SECURITY_H */ 1847 1848