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