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