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