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