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 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * Due to this file being licensed under the GPL there is controversy over 16 * whether this permits you to write a module that #includes this file 17 * without placing your module under the GPL. Please consult a lawyer for 18 * advice before doing this. 19 * 20 */ 21 22 #ifndef __LINUX_SECURITY_H 23 #define __LINUX_SECURITY_H 24 25 #include <linux/key.h> 26 #include <linux/capability.h> 27 #include <linux/fs.h> 28 #include <linux/slab.h> 29 #include <linux/err.h> 30 #include <linux/string.h> 31 #include <linux/mm.h> 32 #include <linux/fs.h> 33 34 struct linux_binprm; 35 struct cred; 36 struct rlimit; 37 struct siginfo; 38 struct sem_array; 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 shmid_kernel; 53 struct msg_msg; 54 struct msg_queue; 55 struct xattr; 56 struct xfrm_sec_ctx; 57 struct mm_struct; 58 59 /* If capable should audit the security request */ 60 #define SECURITY_CAP_NOAUDIT 0 61 #define SECURITY_CAP_AUDIT 1 62 63 /* LSM Agnostic defines for sb_set_mnt_opts */ 64 #define SECURITY_LSM_NATIVE_LABELS 1 65 66 struct ctl_table; 67 struct audit_krule; 68 struct user_namespace; 69 struct timezone; 70 71 /* These functions are in security/commoncap.c */ 72 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 73 int cap, int audit); 74 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 75 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 76 extern int cap_ptrace_traceme(struct task_struct *parent); 77 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 78 extern int cap_capset(struct cred *new, const struct cred *old, 79 const kernel_cap_t *effective, 80 const kernel_cap_t *inheritable, 81 const kernel_cap_t *permitted); 82 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 83 extern int cap_bprm_secureexec(struct linux_binprm *bprm); 84 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 85 const void *value, size_t size, int flags); 86 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 87 extern int cap_inode_need_killpriv(struct dentry *dentry); 88 extern int cap_inode_killpriv(struct dentry *dentry); 89 extern int cap_mmap_addr(unsigned long addr); 90 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 91 unsigned long prot, unsigned long flags); 92 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 93 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 94 unsigned long arg4, unsigned long arg5); 95 extern int cap_task_setscheduler(struct task_struct *p); 96 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 97 extern int cap_task_setnice(struct task_struct *p, int nice); 98 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 99 100 struct msghdr; 101 struct sk_buff; 102 struct sock; 103 struct sockaddr; 104 struct socket; 105 struct flowi; 106 struct dst_entry; 107 struct xfrm_selector; 108 struct xfrm_policy; 109 struct xfrm_state; 110 struct xfrm_user_sec_ctx; 111 struct seq_file; 112 113 #ifdef CONFIG_MMU 114 extern unsigned long mmap_min_addr; 115 extern unsigned long dac_mmap_min_addr; 116 #else 117 #define mmap_min_addr 0UL 118 #define dac_mmap_min_addr 0UL 119 #endif 120 121 /* 122 * Values used in the task_security_ops calls 123 */ 124 /* setuid or setgid, id0 == uid or gid */ 125 #define LSM_SETID_ID 1 126 127 /* setreuid or setregid, id0 == real, id1 == eff */ 128 #define LSM_SETID_RE 2 129 130 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 131 #define LSM_SETID_RES 4 132 133 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 134 #define LSM_SETID_FS 8 135 136 /* Flags for security_task_prlimit(). */ 137 #define LSM_PRLIMIT_READ 1 138 #define LSM_PRLIMIT_WRITE 2 139 140 /* forward declares to avoid warnings */ 141 struct sched_param; 142 struct request_sock; 143 144 /* bprm->unsafe reasons */ 145 #define LSM_UNSAFE_SHARE 1 146 #define LSM_UNSAFE_PTRACE 2 147 #define LSM_UNSAFE_NO_NEW_PRIVS 4 148 149 #ifdef CONFIG_MMU 150 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 151 void __user *buffer, size_t *lenp, loff_t *ppos); 152 #endif 153 154 /* security_inode_init_security callback function to write xattrs */ 155 typedef int (*initxattrs) (struct inode *inode, 156 const struct xattr *xattr_array, void *fs_data); 157 158 #ifdef CONFIG_SECURITY 159 160 struct security_mnt_opts { 161 char **mnt_opts; 162 int *mnt_opts_flags; 163 int num_mnt_opts; 164 }; 165 166 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 167 { 168 opts->mnt_opts = NULL; 169 opts->mnt_opts_flags = NULL; 170 opts->num_mnt_opts = 0; 171 } 172 173 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 174 { 175 int i; 176 if (opts->mnt_opts) 177 for (i = 0; i < opts->num_mnt_opts; i++) 178 kfree(opts->mnt_opts[i]); 179 kfree(opts->mnt_opts); 180 opts->mnt_opts = NULL; 181 kfree(opts->mnt_opts_flags); 182 opts->mnt_opts_flags = NULL; 183 opts->num_mnt_opts = 0; 184 } 185 186 /* prototypes */ 187 extern int security_init(void); 188 189 /* Security operations */ 190 int security_binder_set_context_mgr(struct task_struct *mgr); 191 int security_binder_transaction(struct task_struct *from, 192 struct task_struct *to); 193 int security_binder_transfer_binder(struct task_struct *from, 194 struct task_struct *to); 195 int security_binder_transfer_file(struct task_struct *from, 196 struct task_struct *to, struct file *file); 197 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 198 int security_ptrace_traceme(struct task_struct *parent); 199 int security_capget(struct task_struct *target, 200 kernel_cap_t *effective, 201 kernel_cap_t *inheritable, 202 kernel_cap_t *permitted); 203 int security_capset(struct cred *new, const struct cred *old, 204 const kernel_cap_t *effective, 205 const kernel_cap_t *inheritable, 206 const kernel_cap_t *permitted); 207 int security_capable(const struct cred *cred, struct user_namespace *ns, 208 int cap); 209 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 210 int cap); 211 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 212 int security_quota_on(struct dentry *dentry); 213 int security_syslog(int type); 214 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 215 static inline int security_settime(const struct timespec *ts, const struct timezone *tz) 216 { 217 struct timespec64 ts64 = timespec_to_timespec64(*ts); 218 219 return security_settime64(&ts64, tz); 220 } 221 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 222 int security_bprm_set_creds(struct linux_binprm *bprm); 223 int security_bprm_check(struct linux_binprm *bprm); 224 void security_bprm_committing_creds(struct linux_binprm *bprm); 225 void security_bprm_committed_creds(struct linux_binprm *bprm); 226 int security_bprm_secureexec(struct linux_binprm *bprm); 227 int security_sb_alloc(struct super_block *sb); 228 void security_sb_free(struct super_block *sb); 229 int security_sb_copy_data(char *orig, char *copy); 230 int security_sb_remount(struct super_block *sb, void *data); 231 int security_sb_kern_mount(struct super_block *sb, int flags, void *data); 232 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 233 int security_sb_statfs(struct dentry *dentry); 234 int security_sb_mount(const char *dev_name, const struct path *path, 235 const char *type, unsigned long flags, void *data); 236 int security_sb_umount(struct vfsmount *mnt, int flags); 237 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 238 int security_sb_set_mnt_opts(struct super_block *sb, 239 struct security_mnt_opts *opts, 240 unsigned long kern_flags, 241 unsigned long *set_kern_flags); 242 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 243 struct super_block *newsb); 244 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); 245 int security_dentry_init_security(struct dentry *dentry, int mode, 246 const struct qstr *name, void **ctx, 247 u32 *ctxlen); 248 int security_dentry_create_files_as(struct dentry *dentry, int mode, 249 struct qstr *name, 250 const struct cred *old, 251 struct cred *new); 252 253 int security_inode_alloc(struct inode *inode); 254 void security_inode_free(struct inode *inode); 255 int security_inode_init_security(struct inode *inode, struct inode *dir, 256 const struct qstr *qstr, 257 initxattrs initxattrs, void *fs_data); 258 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 259 const struct qstr *qstr, const char **name, 260 void **value, size_t *len); 261 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 262 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 263 struct dentry *new_dentry); 264 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 265 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 266 const char *old_name); 267 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 268 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 269 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 270 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 271 struct inode *new_dir, struct dentry *new_dentry, 272 unsigned int flags); 273 int security_inode_readlink(struct dentry *dentry); 274 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 275 bool rcu); 276 int security_inode_permission(struct inode *inode, int mask); 277 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 278 int security_inode_getattr(const struct path *path); 279 int security_inode_setxattr(struct dentry *dentry, const char *name, 280 const void *value, size_t size, int flags); 281 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 282 const void *value, size_t size, int flags); 283 int security_inode_getxattr(struct dentry *dentry, const char *name); 284 int security_inode_listxattr(struct dentry *dentry); 285 int security_inode_removexattr(struct dentry *dentry, const char *name); 286 int security_inode_need_killpriv(struct dentry *dentry); 287 int security_inode_killpriv(struct dentry *dentry); 288 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 289 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 290 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 291 void security_inode_getsecid(struct inode *inode, u32 *secid); 292 int security_inode_copy_up(struct dentry *src, struct cred **new); 293 int security_inode_copy_up_xattr(const char *name); 294 int security_file_permission(struct file *file, int mask); 295 int security_file_alloc(struct file *file); 296 void security_file_free(struct file *file); 297 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 298 int security_mmap_file(struct file *file, unsigned long prot, 299 unsigned long flags); 300 int security_mmap_addr(unsigned long addr); 301 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 302 unsigned long prot); 303 int security_file_lock(struct file *file, unsigned int cmd); 304 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 305 void security_file_set_fowner(struct file *file); 306 int security_file_send_sigiotask(struct task_struct *tsk, 307 struct fown_struct *fown, int sig); 308 int security_file_receive(struct file *file); 309 int security_file_open(struct file *file, const struct cred *cred); 310 int security_task_create(unsigned long clone_flags); 311 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 312 void security_task_free(struct task_struct *task); 313 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 314 void security_cred_free(struct cred *cred); 315 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 316 void security_transfer_creds(struct cred *new, const struct cred *old); 317 int security_kernel_act_as(struct cred *new, u32 secid); 318 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 319 int security_kernel_module_request(char *kmod_name); 320 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 321 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 322 enum kernel_read_file_id id); 323 int security_task_fix_setuid(struct cred *new, const struct cred *old, 324 int flags); 325 int security_task_setpgid(struct task_struct *p, pid_t pgid); 326 int security_task_getpgid(struct task_struct *p); 327 int security_task_getsid(struct task_struct *p); 328 void security_task_getsecid(struct task_struct *p, u32 *secid); 329 int security_task_setnice(struct task_struct *p, int nice); 330 int security_task_setioprio(struct task_struct *p, int ioprio); 331 int security_task_getioprio(struct task_struct *p); 332 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 333 unsigned int flags); 334 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 335 struct rlimit *new_rlim); 336 int security_task_setscheduler(struct task_struct *p); 337 int security_task_getscheduler(struct task_struct *p); 338 int security_task_movememory(struct task_struct *p); 339 int security_task_kill(struct task_struct *p, struct siginfo *info, 340 int sig, u32 secid); 341 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 342 unsigned long arg4, unsigned long arg5); 343 void security_task_to_inode(struct task_struct *p, struct inode *inode); 344 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 345 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 346 int security_msg_msg_alloc(struct msg_msg *msg); 347 void security_msg_msg_free(struct msg_msg *msg); 348 int security_msg_queue_alloc(struct msg_queue *msq); 349 void security_msg_queue_free(struct msg_queue *msq); 350 int security_msg_queue_associate(struct msg_queue *msq, int msqflg); 351 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd); 352 int security_msg_queue_msgsnd(struct msg_queue *msq, 353 struct msg_msg *msg, int msqflg); 354 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 355 struct task_struct *target, long type, int mode); 356 int security_shm_alloc(struct shmid_kernel *shp); 357 void security_shm_free(struct shmid_kernel *shp); 358 int security_shm_associate(struct shmid_kernel *shp, int shmflg); 359 int security_shm_shmctl(struct shmid_kernel *shp, int cmd); 360 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg); 361 int security_sem_alloc(struct sem_array *sma); 362 void security_sem_free(struct sem_array *sma); 363 int security_sem_associate(struct sem_array *sma, int semflg); 364 int security_sem_semctl(struct sem_array *sma, int cmd); 365 int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 366 unsigned nsops, int alter); 367 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 368 int security_getprocattr(struct task_struct *p, char *name, char **value); 369 int security_setprocattr(const char *name, void *value, size_t size); 370 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 371 int security_ismaclabel(const char *name); 372 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 373 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 374 void security_release_secctx(char *secdata, u32 seclen); 375 376 void security_inode_invalidate_secctx(struct inode *inode); 377 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 378 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 379 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 380 #else /* CONFIG_SECURITY */ 381 struct security_mnt_opts { 382 }; 383 384 static inline void security_init_mnt_opts(struct security_mnt_opts *opts) 385 { 386 } 387 388 static inline void security_free_mnt_opts(struct security_mnt_opts *opts) 389 { 390 } 391 392 /* 393 * This is the default capabilities functionality. Most of these functions 394 * are just stubbed out, but a few must call the proper capable code. 395 */ 396 397 static inline int security_init(void) 398 { 399 return 0; 400 } 401 402 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 403 { 404 return 0; 405 } 406 407 static inline int security_binder_transaction(struct task_struct *from, 408 struct task_struct *to) 409 { 410 return 0; 411 } 412 413 static inline int security_binder_transfer_binder(struct task_struct *from, 414 struct task_struct *to) 415 { 416 return 0; 417 } 418 419 static inline int security_binder_transfer_file(struct task_struct *from, 420 struct task_struct *to, 421 struct file *file) 422 { 423 return 0; 424 } 425 426 static inline int security_ptrace_access_check(struct task_struct *child, 427 unsigned int mode) 428 { 429 return cap_ptrace_access_check(child, mode); 430 } 431 432 static inline int security_ptrace_traceme(struct task_struct *parent) 433 { 434 return cap_ptrace_traceme(parent); 435 } 436 437 static inline int security_capget(struct task_struct *target, 438 kernel_cap_t *effective, 439 kernel_cap_t *inheritable, 440 kernel_cap_t *permitted) 441 { 442 return cap_capget(target, effective, inheritable, permitted); 443 } 444 445 static inline int security_capset(struct cred *new, 446 const struct cred *old, 447 const kernel_cap_t *effective, 448 const kernel_cap_t *inheritable, 449 const kernel_cap_t *permitted) 450 { 451 return cap_capset(new, old, effective, inheritable, permitted); 452 } 453 454 static inline int security_capable(const struct cred *cred, 455 struct user_namespace *ns, int cap) 456 { 457 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT); 458 } 459 460 static inline int security_capable_noaudit(const struct cred *cred, 461 struct user_namespace *ns, int cap) { 462 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 463 } 464 465 static inline int security_quotactl(int cmds, int type, int id, 466 struct super_block *sb) 467 { 468 return 0; 469 } 470 471 static inline int security_quota_on(struct dentry *dentry) 472 { 473 return 0; 474 } 475 476 static inline int security_syslog(int type) 477 { 478 return 0; 479 } 480 481 static inline int security_settime64(const struct timespec64 *ts, 482 const struct timezone *tz) 483 { 484 return cap_settime(ts, tz); 485 } 486 487 static inline int security_settime(const struct timespec *ts, 488 const struct timezone *tz) 489 { 490 struct timespec64 ts64 = timespec_to_timespec64(*ts); 491 492 return cap_settime(&ts64, tz); 493 } 494 495 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 496 { 497 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 498 } 499 500 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 501 { 502 return cap_bprm_set_creds(bprm); 503 } 504 505 static inline int security_bprm_check(struct linux_binprm *bprm) 506 { 507 return 0; 508 } 509 510 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 511 { 512 } 513 514 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 515 { 516 } 517 518 static inline int security_bprm_secureexec(struct linux_binprm *bprm) 519 { 520 return cap_bprm_secureexec(bprm); 521 } 522 523 static inline int security_sb_alloc(struct super_block *sb) 524 { 525 return 0; 526 } 527 528 static inline void security_sb_free(struct super_block *sb) 529 { } 530 531 static inline int security_sb_copy_data(char *orig, char *copy) 532 { 533 return 0; 534 } 535 536 static inline int security_sb_remount(struct super_block *sb, void *data) 537 { 538 return 0; 539 } 540 541 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 542 { 543 return 0; 544 } 545 546 static inline int security_sb_show_options(struct seq_file *m, 547 struct super_block *sb) 548 { 549 return 0; 550 } 551 552 static inline int security_sb_statfs(struct dentry *dentry) 553 { 554 return 0; 555 } 556 557 static inline int security_sb_mount(const char *dev_name, const struct path *path, 558 const char *type, unsigned long flags, 559 void *data) 560 { 561 return 0; 562 } 563 564 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 565 { 566 return 0; 567 } 568 569 static inline int security_sb_pivotroot(const struct path *old_path, 570 const struct path *new_path) 571 { 572 return 0; 573 } 574 575 static inline int security_sb_set_mnt_opts(struct super_block *sb, 576 struct security_mnt_opts *opts, 577 unsigned long kern_flags, 578 unsigned long *set_kern_flags) 579 { 580 return 0; 581 } 582 583 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 584 struct super_block *newsb) 585 { 586 return 0; 587 } 588 589 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 590 { 591 return 0; 592 } 593 594 static inline int security_inode_alloc(struct inode *inode) 595 { 596 return 0; 597 } 598 599 static inline void security_inode_free(struct inode *inode) 600 { } 601 602 static inline int security_dentry_init_security(struct dentry *dentry, 603 int mode, 604 const struct qstr *name, 605 void **ctx, 606 u32 *ctxlen) 607 { 608 return -EOPNOTSUPP; 609 } 610 611 static inline int security_dentry_create_files_as(struct dentry *dentry, 612 int mode, struct qstr *name, 613 const struct cred *old, 614 struct cred *new) 615 { 616 return 0; 617 } 618 619 620 static inline int security_inode_init_security(struct inode *inode, 621 struct inode *dir, 622 const struct qstr *qstr, 623 const initxattrs xattrs, 624 void *fs_data) 625 { 626 return 0; 627 } 628 629 static inline int security_old_inode_init_security(struct inode *inode, 630 struct inode *dir, 631 const struct qstr *qstr, 632 const char **name, 633 void **value, size_t *len) 634 { 635 return -EOPNOTSUPP; 636 } 637 638 static inline int security_inode_create(struct inode *dir, 639 struct dentry *dentry, 640 umode_t mode) 641 { 642 return 0; 643 } 644 645 static inline int security_inode_link(struct dentry *old_dentry, 646 struct inode *dir, 647 struct dentry *new_dentry) 648 { 649 return 0; 650 } 651 652 static inline int security_inode_unlink(struct inode *dir, 653 struct dentry *dentry) 654 { 655 return 0; 656 } 657 658 static inline int security_inode_symlink(struct inode *dir, 659 struct dentry *dentry, 660 const char *old_name) 661 { 662 return 0; 663 } 664 665 static inline int security_inode_mkdir(struct inode *dir, 666 struct dentry *dentry, 667 int mode) 668 { 669 return 0; 670 } 671 672 static inline int security_inode_rmdir(struct inode *dir, 673 struct dentry *dentry) 674 { 675 return 0; 676 } 677 678 static inline int security_inode_mknod(struct inode *dir, 679 struct dentry *dentry, 680 int mode, dev_t dev) 681 { 682 return 0; 683 } 684 685 static inline int security_inode_rename(struct inode *old_dir, 686 struct dentry *old_dentry, 687 struct inode *new_dir, 688 struct dentry *new_dentry, 689 unsigned int flags) 690 { 691 return 0; 692 } 693 694 static inline int security_inode_readlink(struct dentry *dentry) 695 { 696 return 0; 697 } 698 699 static inline int security_inode_follow_link(struct dentry *dentry, 700 struct inode *inode, 701 bool rcu) 702 { 703 return 0; 704 } 705 706 static inline int security_inode_permission(struct inode *inode, int mask) 707 { 708 return 0; 709 } 710 711 static inline int security_inode_setattr(struct dentry *dentry, 712 struct iattr *attr) 713 { 714 return 0; 715 } 716 717 static inline int security_inode_getattr(const struct path *path) 718 { 719 return 0; 720 } 721 722 static inline int security_inode_setxattr(struct dentry *dentry, 723 const char *name, const void *value, size_t size, int flags) 724 { 725 return cap_inode_setxattr(dentry, name, value, size, flags); 726 } 727 728 static inline void security_inode_post_setxattr(struct dentry *dentry, 729 const char *name, const void *value, size_t size, int flags) 730 { } 731 732 static inline int security_inode_getxattr(struct dentry *dentry, 733 const char *name) 734 { 735 return 0; 736 } 737 738 static inline int security_inode_listxattr(struct dentry *dentry) 739 { 740 return 0; 741 } 742 743 static inline int security_inode_removexattr(struct dentry *dentry, 744 const char *name) 745 { 746 return cap_inode_removexattr(dentry, name); 747 } 748 749 static inline int security_inode_need_killpriv(struct dentry *dentry) 750 { 751 return cap_inode_need_killpriv(dentry); 752 } 753 754 static inline int security_inode_killpriv(struct dentry *dentry) 755 { 756 return cap_inode_killpriv(dentry); 757 } 758 759 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 760 { 761 return -EOPNOTSUPP; 762 } 763 764 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 765 { 766 return -EOPNOTSUPP; 767 } 768 769 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 770 { 771 return 0; 772 } 773 774 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 775 { 776 *secid = 0; 777 } 778 779 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 780 { 781 return 0; 782 } 783 784 static inline int security_inode_copy_up_xattr(const char *name) 785 { 786 return -EOPNOTSUPP; 787 } 788 789 static inline int security_file_permission(struct file *file, int mask) 790 { 791 return 0; 792 } 793 794 static inline int security_file_alloc(struct file *file) 795 { 796 return 0; 797 } 798 799 static inline void security_file_free(struct file *file) 800 { } 801 802 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 803 unsigned long arg) 804 { 805 return 0; 806 } 807 808 static inline int security_mmap_file(struct file *file, unsigned long prot, 809 unsigned long flags) 810 { 811 return 0; 812 } 813 814 static inline int security_mmap_addr(unsigned long addr) 815 { 816 return cap_mmap_addr(addr); 817 } 818 819 static inline int security_file_mprotect(struct vm_area_struct *vma, 820 unsigned long reqprot, 821 unsigned long prot) 822 { 823 return 0; 824 } 825 826 static inline int security_file_lock(struct file *file, unsigned int cmd) 827 { 828 return 0; 829 } 830 831 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 832 unsigned long arg) 833 { 834 return 0; 835 } 836 837 static inline void security_file_set_fowner(struct file *file) 838 { 839 return; 840 } 841 842 static inline int security_file_send_sigiotask(struct task_struct *tsk, 843 struct fown_struct *fown, 844 int sig) 845 { 846 return 0; 847 } 848 849 static inline int security_file_receive(struct file *file) 850 { 851 return 0; 852 } 853 854 static inline int security_file_open(struct file *file, 855 const struct cred *cred) 856 { 857 return 0; 858 } 859 860 static inline int security_task_create(unsigned long clone_flags) 861 { 862 return 0; 863 } 864 865 static inline int security_task_alloc(struct task_struct *task, 866 unsigned long clone_flags) 867 { 868 return 0; 869 } 870 871 static inline void security_task_free(struct task_struct *task) 872 { } 873 874 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 875 { 876 return 0; 877 } 878 879 static inline void security_cred_free(struct cred *cred) 880 { } 881 882 static inline int security_prepare_creds(struct cred *new, 883 const struct cred *old, 884 gfp_t gfp) 885 { 886 return 0; 887 } 888 889 static inline void security_transfer_creds(struct cred *new, 890 const struct cred *old) 891 { 892 } 893 894 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 895 { 896 return 0; 897 } 898 899 static inline int security_kernel_create_files_as(struct cred *cred, 900 struct inode *inode) 901 { 902 return 0; 903 } 904 905 static inline int security_kernel_module_request(char *kmod_name) 906 { 907 return 0; 908 } 909 910 static inline int security_kernel_read_file(struct file *file, 911 enum kernel_read_file_id id) 912 { 913 return 0; 914 } 915 916 static inline int security_kernel_post_read_file(struct file *file, 917 char *buf, loff_t size, 918 enum kernel_read_file_id id) 919 { 920 return 0; 921 } 922 923 static inline int security_task_fix_setuid(struct cred *new, 924 const struct cred *old, 925 int flags) 926 { 927 return cap_task_fix_setuid(new, old, flags); 928 } 929 930 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 931 { 932 return 0; 933 } 934 935 static inline int security_task_getpgid(struct task_struct *p) 936 { 937 return 0; 938 } 939 940 static inline int security_task_getsid(struct task_struct *p) 941 { 942 return 0; 943 } 944 945 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 946 { 947 *secid = 0; 948 } 949 950 static inline int security_task_setnice(struct task_struct *p, int nice) 951 { 952 return cap_task_setnice(p, nice); 953 } 954 955 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 956 { 957 return cap_task_setioprio(p, ioprio); 958 } 959 960 static inline int security_task_getioprio(struct task_struct *p) 961 { 962 return 0; 963 } 964 965 static inline int security_task_prlimit(const struct cred *cred, 966 const struct cred *tcred, 967 unsigned int flags) 968 { 969 return 0; 970 } 971 972 static inline int security_task_setrlimit(struct task_struct *p, 973 unsigned int resource, 974 struct rlimit *new_rlim) 975 { 976 return 0; 977 } 978 979 static inline int security_task_setscheduler(struct task_struct *p) 980 { 981 return cap_task_setscheduler(p); 982 } 983 984 static inline int security_task_getscheduler(struct task_struct *p) 985 { 986 return 0; 987 } 988 989 static inline int security_task_movememory(struct task_struct *p) 990 { 991 return 0; 992 } 993 994 static inline int security_task_kill(struct task_struct *p, 995 struct siginfo *info, int sig, 996 u32 secid) 997 { 998 return 0; 999 } 1000 1001 static inline int security_task_prctl(int option, unsigned long arg2, 1002 unsigned long arg3, 1003 unsigned long arg4, 1004 unsigned long arg5) 1005 { 1006 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1007 } 1008 1009 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1010 { } 1011 1012 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1013 short flag) 1014 { 1015 return 0; 1016 } 1017 1018 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1019 { 1020 *secid = 0; 1021 } 1022 1023 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1024 { 1025 return 0; 1026 } 1027 1028 static inline void security_msg_msg_free(struct msg_msg *msg) 1029 { } 1030 1031 static inline int security_msg_queue_alloc(struct msg_queue *msq) 1032 { 1033 return 0; 1034 } 1035 1036 static inline void security_msg_queue_free(struct msg_queue *msq) 1037 { } 1038 1039 static inline int security_msg_queue_associate(struct msg_queue *msq, 1040 int msqflg) 1041 { 1042 return 0; 1043 } 1044 1045 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 1046 { 1047 return 0; 1048 } 1049 1050 static inline int security_msg_queue_msgsnd(struct msg_queue *msq, 1051 struct msg_msg *msg, int msqflg) 1052 { 1053 return 0; 1054 } 1055 1056 static inline int security_msg_queue_msgrcv(struct msg_queue *msq, 1057 struct msg_msg *msg, 1058 struct task_struct *target, 1059 long type, int mode) 1060 { 1061 return 0; 1062 } 1063 1064 static inline int security_shm_alloc(struct shmid_kernel *shp) 1065 { 1066 return 0; 1067 } 1068 1069 static inline void security_shm_free(struct shmid_kernel *shp) 1070 { } 1071 1072 static inline int security_shm_associate(struct shmid_kernel *shp, 1073 int shmflg) 1074 { 1075 return 0; 1076 } 1077 1078 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 1079 { 1080 return 0; 1081 } 1082 1083 static inline int security_shm_shmat(struct shmid_kernel *shp, 1084 char __user *shmaddr, int shmflg) 1085 { 1086 return 0; 1087 } 1088 1089 static inline int security_sem_alloc(struct sem_array *sma) 1090 { 1091 return 0; 1092 } 1093 1094 static inline void security_sem_free(struct sem_array *sma) 1095 { } 1096 1097 static inline int security_sem_associate(struct sem_array *sma, int semflg) 1098 { 1099 return 0; 1100 } 1101 1102 static inline int security_sem_semctl(struct sem_array *sma, int cmd) 1103 { 1104 return 0; 1105 } 1106 1107 static inline int security_sem_semop(struct sem_array *sma, 1108 struct sembuf *sops, unsigned nsops, 1109 int alter) 1110 { 1111 return 0; 1112 } 1113 1114 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1115 { } 1116 1117 static inline int security_getprocattr(struct task_struct *p, char *name, char **value) 1118 { 1119 return -EINVAL; 1120 } 1121 1122 static inline int security_setprocattr(char *name, void *value, size_t size) 1123 { 1124 return -EINVAL; 1125 } 1126 1127 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1128 { 1129 return 0; 1130 } 1131 1132 static inline int security_ismaclabel(const char *name) 1133 { 1134 return 0; 1135 } 1136 1137 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1138 { 1139 return -EOPNOTSUPP; 1140 } 1141 1142 static inline int security_secctx_to_secid(const char *secdata, 1143 u32 seclen, 1144 u32 *secid) 1145 { 1146 return -EOPNOTSUPP; 1147 } 1148 1149 static inline void security_release_secctx(char *secdata, u32 seclen) 1150 { 1151 } 1152 1153 static inline void security_inode_invalidate_secctx(struct inode *inode) 1154 { 1155 } 1156 1157 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1158 { 1159 return -EOPNOTSUPP; 1160 } 1161 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1162 { 1163 return -EOPNOTSUPP; 1164 } 1165 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1166 { 1167 return -EOPNOTSUPP; 1168 } 1169 #endif /* CONFIG_SECURITY */ 1170 1171 #ifdef CONFIG_SECURITY_NETWORK 1172 1173 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1174 int security_unix_may_send(struct socket *sock, struct socket *other); 1175 int security_socket_create(int family, int type, int protocol, int kern); 1176 int security_socket_post_create(struct socket *sock, int family, 1177 int type, int protocol, int kern); 1178 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1179 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1180 int security_socket_listen(struct socket *sock, int backlog); 1181 int security_socket_accept(struct socket *sock, struct socket *newsock); 1182 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1183 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1184 int size, int flags); 1185 int security_socket_getsockname(struct socket *sock); 1186 int security_socket_getpeername(struct socket *sock); 1187 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1188 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1189 int security_socket_shutdown(struct socket *sock, int how); 1190 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1191 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1192 int __user *optlen, unsigned len); 1193 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1194 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1195 void security_sk_free(struct sock *sk); 1196 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1197 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1198 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1199 void security_sock_graft(struct sock*sk, struct socket *parent); 1200 int security_inet_conn_request(struct sock *sk, 1201 struct sk_buff *skb, struct request_sock *req); 1202 void security_inet_csk_clone(struct sock *newsk, 1203 const struct request_sock *req); 1204 void security_inet_conn_established(struct sock *sk, 1205 struct sk_buff *skb); 1206 int security_secmark_relabel_packet(u32 secid); 1207 void security_secmark_refcount_inc(void); 1208 void security_secmark_refcount_dec(void); 1209 int security_tun_dev_alloc_security(void **security); 1210 void security_tun_dev_free_security(void *security); 1211 int security_tun_dev_create(void); 1212 int security_tun_dev_attach_queue(void *security); 1213 int security_tun_dev_attach(struct sock *sk, void *security); 1214 int security_tun_dev_open(void *security); 1215 1216 #else /* CONFIG_SECURITY_NETWORK */ 1217 static inline int security_unix_stream_connect(struct sock *sock, 1218 struct sock *other, 1219 struct sock *newsk) 1220 { 1221 return 0; 1222 } 1223 1224 static inline int security_unix_may_send(struct socket *sock, 1225 struct socket *other) 1226 { 1227 return 0; 1228 } 1229 1230 static inline int security_socket_create(int family, int type, 1231 int protocol, int kern) 1232 { 1233 return 0; 1234 } 1235 1236 static inline int security_socket_post_create(struct socket *sock, 1237 int family, 1238 int type, 1239 int protocol, int kern) 1240 { 1241 return 0; 1242 } 1243 1244 static inline int security_socket_bind(struct socket *sock, 1245 struct sockaddr *address, 1246 int addrlen) 1247 { 1248 return 0; 1249 } 1250 1251 static inline int security_socket_connect(struct socket *sock, 1252 struct sockaddr *address, 1253 int addrlen) 1254 { 1255 return 0; 1256 } 1257 1258 static inline int security_socket_listen(struct socket *sock, int backlog) 1259 { 1260 return 0; 1261 } 1262 1263 static inline int security_socket_accept(struct socket *sock, 1264 struct socket *newsock) 1265 { 1266 return 0; 1267 } 1268 1269 static inline int security_socket_sendmsg(struct socket *sock, 1270 struct msghdr *msg, int size) 1271 { 1272 return 0; 1273 } 1274 1275 static inline int security_socket_recvmsg(struct socket *sock, 1276 struct msghdr *msg, int size, 1277 int flags) 1278 { 1279 return 0; 1280 } 1281 1282 static inline int security_socket_getsockname(struct socket *sock) 1283 { 1284 return 0; 1285 } 1286 1287 static inline int security_socket_getpeername(struct socket *sock) 1288 { 1289 return 0; 1290 } 1291 1292 static inline int security_socket_getsockopt(struct socket *sock, 1293 int level, int optname) 1294 { 1295 return 0; 1296 } 1297 1298 static inline int security_socket_setsockopt(struct socket *sock, 1299 int level, int optname) 1300 { 1301 return 0; 1302 } 1303 1304 static inline int security_socket_shutdown(struct socket *sock, int how) 1305 { 1306 return 0; 1307 } 1308 static inline int security_sock_rcv_skb(struct sock *sk, 1309 struct sk_buff *skb) 1310 { 1311 return 0; 1312 } 1313 1314 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1315 int __user *optlen, unsigned len) 1316 { 1317 return -ENOPROTOOPT; 1318 } 1319 1320 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1321 { 1322 return -ENOPROTOOPT; 1323 } 1324 1325 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1326 { 1327 return 0; 1328 } 1329 1330 static inline void security_sk_free(struct sock *sk) 1331 { 1332 } 1333 1334 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1335 { 1336 } 1337 1338 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1339 { 1340 } 1341 1342 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1343 { 1344 } 1345 1346 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1347 { 1348 } 1349 1350 static inline int security_inet_conn_request(struct sock *sk, 1351 struct sk_buff *skb, struct request_sock *req) 1352 { 1353 return 0; 1354 } 1355 1356 static inline void security_inet_csk_clone(struct sock *newsk, 1357 const struct request_sock *req) 1358 { 1359 } 1360 1361 static inline void security_inet_conn_established(struct sock *sk, 1362 struct sk_buff *skb) 1363 { 1364 } 1365 1366 static inline int security_secmark_relabel_packet(u32 secid) 1367 { 1368 return 0; 1369 } 1370 1371 static inline void security_secmark_refcount_inc(void) 1372 { 1373 } 1374 1375 static inline void security_secmark_refcount_dec(void) 1376 { 1377 } 1378 1379 static inline int security_tun_dev_alloc_security(void **security) 1380 { 1381 return 0; 1382 } 1383 1384 static inline void security_tun_dev_free_security(void *security) 1385 { 1386 } 1387 1388 static inline int security_tun_dev_create(void) 1389 { 1390 return 0; 1391 } 1392 1393 static inline int security_tun_dev_attach_queue(void *security) 1394 { 1395 return 0; 1396 } 1397 1398 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1399 { 1400 return 0; 1401 } 1402 1403 static inline int security_tun_dev_open(void *security) 1404 { 1405 return 0; 1406 } 1407 #endif /* CONFIG_SECURITY_NETWORK */ 1408 1409 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1410 1411 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1412 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1413 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1414 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1415 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1416 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1417 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1418 struct xfrm_sec_ctx *polsec, u32 secid); 1419 int security_xfrm_state_delete(struct xfrm_state *x); 1420 void security_xfrm_state_free(struct xfrm_state *x); 1421 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1422 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1423 struct xfrm_policy *xp, 1424 const struct flowi *fl); 1425 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1426 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1427 1428 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1429 1430 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1431 struct xfrm_user_sec_ctx *sec_ctx, 1432 gfp_t gfp) 1433 { 1434 return 0; 1435 } 1436 1437 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1438 { 1439 return 0; 1440 } 1441 1442 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1443 { 1444 } 1445 1446 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1447 { 1448 return 0; 1449 } 1450 1451 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1452 struct xfrm_user_sec_ctx *sec_ctx) 1453 { 1454 return 0; 1455 } 1456 1457 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1458 struct xfrm_sec_ctx *polsec, u32 secid) 1459 { 1460 return 0; 1461 } 1462 1463 static inline void security_xfrm_state_free(struct xfrm_state *x) 1464 { 1465 } 1466 1467 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1468 { 1469 return 0; 1470 } 1471 1472 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1473 { 1474 return 0; 1475 } 1476 1477 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1478 struct xfrm_policy *xp, const struct flowi *fl) 1479 { 1480 return 1; 1481 } 1482 1483 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1484 { 1485 return 0; 1486 } 1487 1488 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1489 { 1490 } 1491 1492 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1493 1494 #ifdef CONFIG_SECURITY_PATH 1495 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1496 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1497 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1498 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1499 unsigned int dev); 1500 int security_path_truncate(const struct path *path); 1501 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1502 const char *old_name); 1503 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1504 struct dentry *new_dentry); 1505 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1506 const struct path *new_dir, struct dentry *new_dentry, 1507 unsigned int flags); 1508 int security_path_chmod(const struct path *path, umode_t mode); 1509 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1510 int security_path_chroot(const struct path *path); 1511 #else /* CONFIG_SECURITY_PATH */ 1512 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1513 { 1514 return 0; 1515 } 1516 1517 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1518 umode_t mode) 1519 { 1520 return 0; 1521 } 1522 1523 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1524 { 1525 return 0; 1526 } 1527 1528 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1529 umode_t mode, unsigned int dev) 1530 { 1531 return 0; 1532 } 1533 1534 static inline int security_path_truncate(const struct path *path) 1535 { 1536 return 0; 1537 } 1538 1539 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1540 const char *old_name) 1541 { 1542 return 0; 1543 } 1544 1545 static inline int security_path_link(struct dentry *old_dentry, 1546 const struct path *new_dir, 1547 struct dentry *new_dentry) 1548 { 1549 return 0; 1550 } 1551 1552 static inline int security_path_rename(const struct path *old_dir, 1553 struct dentry *old_dentry, 1554 const struct path *new_dir, 1555 struct dentry *new_dentry, 1556 unsigned int flags) 1557 { 1558 return 0; 1559 } 1560 1561 static inline int security_path_chmod(const struct path *path, umode_t mode) 1562 { 1563 return 0; 1564 } 1565 1566 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1567 { 1568 return 0; 1569 } 1570 1571 static inline int security_path_chroot(const struct path *path) 1572 { 1573 return 0; 1574 } 1575 #endif /* CONFIG_SECURITY_PATH */ 1576 1577 #ifdef CONFIG_KEYS 1578 #ifdef CONFIG_SECURITY 1579 1580 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1581 void security_key_free(struct key *key); 1582 int security_key_permission(key_ref_t key_ref, 1583 const struct cred *cred, unsigned perm); 1584 int security_key_getsecurity(struct key *key, char **_buffer); 1585 1586 #else 1587 1588 static inline int security_key_alloc(struct key *key, 1589 const struct cred *cred, 1590 unsigned long flags) 1591 { 1592 return 0; 1593 } 1594 1595 static inline void security_key_free(struct key *key) 1596 { 1597 } 1598 1599 static inline int security_key_permission(key_ref_t key_ref, 1600 const struct cred *cred, 1601 unsigned perm) 1602 { 1603 return 0; 1604 } 1605 1606 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1607 { 1608 *_buffer = NULL; 1609 return 0; 1610 } 1611 1612 #endif 1613 #endif /* CONFIG_KEYS */ 1614 1615 #ifdef CONFIG_AUDIT 1616 #ifdef CONFIG_SECURITY 1617 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1618 int security_audit_rule_known(struct audit_krule *krule); 1619 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1620 struct audit_context *actx); 1621 void security_audit_rule_free(void *lsmrule); 1622 1623 #else 1624 1625 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1626 void **lsmrule) 1627 { 1628 return 0; 1629 } 1630 1631 static inline int security_audit_rule_known(struct audit_krule *krule) 1632 { 1633 return 0; 1634 } 1635 1636 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1637 void *lsmrule, struct audit_context *actx) 1638 { 1639 return 0; 1640 } 1641 1642 static inline void security_audit_rule_free(void *lsmrule) 1643 { } 1644 1645 #endif /* CONFIG_SECURITY */ 1646 #endif /* CONFIG_AUDIT */ 1647 1648 #ifdef CONFIG_SECURITYFS 1649 1650 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1651 struct dentry *parent, void *data, 1652 const struct file_operations *fops); 1653 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1654 extern void securityfs_remove(struct dentry *dentry); 1655 1656 #else /* CONFIG_SECURITYFS */ 1657 1658 static inline struct dentry *securityfs_create_dir(const char *name, 1659 struct dentry *parent) 1660 { 1661 return ERR_PTR(-ENODEV); 1662 } 1663 1664 static inline struct dentry *securityfs_create_file(const char *name, 1665 umode_t mode, 1666 struct dentry *parent, 1667 void *data, 1668 const struct file_operations *fops) 1669 { 1670 return ERR_PTR(-ENODEV); 1671 } 1672 1673 static inline void securityfs_remove(struct dentry *dentry) 1674 {} 1675 1676 #endif 1677 1678 #ifdef CONFIG_SECURITY 1679 1680 static inline char *alloc_secdata(void) 1681 { 1682 return (char *)get_zeroed_page(GFP_KERNEL); 1683 } 1684 1685 static inline void free_secdata(void *secdata) 1686 { 1687 free_page((unsigned long)secdata); 1688 } 1689 1690 #else 1691 1692 static inline char *alloc_secdata(void) 1693 { 1694 return (char *)1; 1695 } 1696 1697 static inline void free_secdata(void *secdata) 1698 { } 1699 #endif /* CONFIG_SECURITY */ 1700 1701 #endif /* ! __LINUX_SECURITY_H */ 1702 1703