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 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/key.h> 27 #include <linux/capability.h> 28 #include <linux/fs.h> 29 #include <linux/slab.h> 30 #include <linux/err.h> 31 #include <linux/string.h> 32 #include <linux/mm.h> 33 #include <linux/fs.h> 34 35 struct linux_binprm; 36 struct cred; 37 struct rlimit; 38 struct kernel_siginfo; 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 msg_msg; 53 struct xattr; 54 struct kernfs_node; 55 struct xfrm_sec_ctx; 56 struct mm_struct; 57 struct fs_context; 58 struct fs_parameter; 59 enum fs_value_type; 60 61 /* Default (no) options for the capable function */ 62 #define CAP_OPT_NONE 0x0 63 /* If capable should audit the security request */ 64 #define CAP_OPT_NOAUDIT BIT(1) 65 /* If capable is being called by a setid function */ 66 #define CAP_OPT_INSETID BIT(2) 67 68 /* LSM Agnostic defines for fs_context::lsm_flags */ 69 #define SECURITY_LSM_NATIVE_LABELS 1 70 71 struct ctl_table; 72 struct audit_krule; 73 struct user_namespace; 74 struct timezone; 75 76 enum lsm_event { 77 LSM_POLICY_CHANGE, 78 }; 79 80 /* 81 * These are reasons that can be passed to the security_locked_down() 82 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 83 * ability for userland to modify kernel code) are placed before 84 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 85 * confidentiality (ie, the ability for userland to extract 86 * information from the running kernel that would otherwise be 87 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 88 * 89 * LSM authors should note that the semantics of any given lockdown 90 * reason are not guaranteed to be stable - the same reason may block 91 * one set of features in one kernel release, and a slightly different 92 * set of features in a later kernel release. LSMs that seek to expose 93 * lockdown policy at any level of granularity other than "none", 94 * "integrity" or "confidentiality" are responsible for either 95 * ensuring that they expose a consistent level of functionality to 96 * userland, or ensuring that userland is aware that this is 97 * potentially a moving target. It is easy to misuse this information 98 * in a way that could break userspace. Please be careful not to do 99 * so. 100 * 101 * If you add to this, remember to extend lockdown_reasons in 102 * security/lockdown/lockdown.c. 103 */ 104 enum lockdown_reason { 105 LOCKDOWN_NONE, 106 LOCKDOWN_MODULE_SIGNATURE, 107 LOCKDOWN_DEV_MEM, 108 LOCKDOWN_KEXEC, 109 LOCKDOWN_HIBERNATION, 110 LOCKDOWN_PCI_ACCESS, 111 LOCKDOWN_INTEGRITY_MAX, 112 LOCKDOWN_CONFIDENTIALITY_MAX, 113 }; 114 115 /* These functions are in security/commoncap.c */ 116 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 117 int cap, unsigned int opts); 118 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 119 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 120 extern int cap_ptrace_traceme(struct task_struct *parent); 121 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 122 extern int cap_capset(struct cred *new, const struct cred *old, 123 const kernel_cap_t *effective, 124 const kernel_cap_t *inheritable, 125 const kernel_cap_t *permitted); 126 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 127 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 128 const void *value, size_t size, int flags); 129 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 130 extern int cap_inode_need_killpriv(struct dentry *dentry); 131 extern int cap_inode_killpriv(struct dentry *dentry); 132 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 133 void **buffer, bool alloc); 134 extern int cap_mmap_addr(unsigned long addr); 135 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 136 unsigned long prot, unsigned long flags); 137 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 138 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 139 unsigned long arg4, unsigned long arg5); 140 extern int cap_task_setscheduler(struct task_struct *p); 141 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 142 extern int cap_task_setnice(struct task_struct *p, int nice); 143 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 144 145 struct msghdr; 146 struct sk_buff; 147 struct sock; 148 struct sockaddr; 149 struct socket; 150 struct flowi; 151 struct dst_entry; 152 struct xfrm_selector; 153 struct xfrm_policy; 154 struct xfrm_state; 155 struct xfrm_user_sec_ctx; 156 struct seq_file; 157 struct sctp_endpoint; 158 159 #ifdef CONFIG_MMU 160 extern unsigned long mmap_min_addr; 161 extern unsigned long dac_mmap_min_addr; 162 #else 163 #define mmap_min_addr 0UL 164 #define dac_mmap_min_addr 0UL 165 #endif 166 167 /* 168 * Values used in the task_security_ops calls 169 */ 170 /* setuid or setgid, id0 == uid or gid */ 171 #define LSM_SETID_ID 1 172 173 /* setreuid or setregid, id0 == real, id1 == eff */ 174 #define LSM_SETID_RE 2 175 176 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 177 #define LSM_SETID_RES 4 178 179 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 180 #define LSM_SETID_FS 8 181 182 /* Flags for security_task_prlimit(). */ 183 #define LSM_PRLIMIT_READ 1 184 #define LSM_PRLIMIT_WRITE 2 185 186 /* forward declares to avoid warnings */ 187 struct sched_param; 188 struct request_sock; 189 190 /* bprm->unsafe reasons */ 191 #define LSM_UNSAFE_SHARE 1 192 #define LSM_UNSAFE_PTRACE 2 193 #define LSM_UNSAFE_NO_NEW_PRIVS 4 194 195 #ifdef CONFIG_MMU 196 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 197 void __user *buffer, size_t *lenp, loff_t *ppos); 198 #endif 199 200 /* security_inode_init_security callback function to write xattrs */ 201 typedef int (*initxattrs) (struct inode *inode, 202 const struct xattr *xattr_array, void *fs_data); 203 204 205 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 206 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 207 #define __data_id_stringify(dummy, str) #str, 208 209 enum kernel_load_data_id { 210 __kernel_read_file_id(__data_id_enumify) 211 }; 212 213 static const char * const kernel_load_data_str[] = { 214 __kernel_read_file_id(__data_id_stringify) 215 }; 216 217 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 218 { 219 if ((unsigned)id >= LOADING_MAX_ID) 220 return kernel_load_data_str[LOADING_UNKNOWN]; 221 222 return kernel_load_data_str[id]; 223 } 224 225 #ifdef CONFIG_SECURITY 226 227 int call_lsm_notifier(enum lsm_event event, void *data); 228 int register_lsm_notifier(struct notifier_block *nb); 229 int unregister_lsm_notifier(struct notifier_block *nb); 230 231 /* prototypes */ 232 extern int security_init(void); 233 extern int early_security_init(void); 234 235 /* Security operations */ 236 int security_binder_set_context_mgr(struct task_struct *mgr); 237 int security_binder_transaction(struct task_struct *from, 238 struct task_struct *to); 239 int security_binder_transfer_binder(struct task_struct *from, 240 struct task_struct *to); 241 int security_binder_transfer_file(struct task_struct *from, 242 struct task_struct *to, struct file *file); 243 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 244 int security_ptrace_traceme(struct task_struct *parent); 245 int security_capget(struct task_struct *target, 246 kernel_cap_t *effective, 247 kernel_cap_t *inheritable, 248 kernel_cap_t *permitted); 249 int security_capset(struct cred *new, const struct cred *old, 250 const kernel_cap_t *effective, 251 const kernel_cap_t *inheritable, 252 const kernel_cap_t *permitted); 253 int security_capable(const struct cred *cred, 254 struct user_namespace *ns, 255 int cap, 256 unsigned int opts); 257 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 258 int security_quota_on(struct dentry *dentry); 259 int security_syslog(int type); 260 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 261 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 262 int security_bprm_set_creds(struct linux_binprm *bprm); 263 int security_bprm_check(struct linux_binprm *bprm); 264 void security_bprm_committing_creds(struct linux_binprm *bprm); 265 void security_bprm_committed_creds(struct linux_binprm *bprm); 266 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 267 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 268 int security_sb_alloc(struct super_block *sb); 269 void security_sb_free(struct super_block *sb); 270 void security_free_mnt_opts(void **mnt_opts); 271 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 272 int security_sb_remount(struct super_block *sb, void *mnt_opts); 273 int security_sb_kern_mount(struct super_block *sb); 274 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 275 int security_sb_statfs(struct dentry *dentry); 276 int security_sb_mount(const char *dev_name, const struct path *path, 277 const char *type, unsigned long flags, void *data); 278 int security_sb_umount(struct vfsmount *mnt, int flags); 279 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 280 int security_sb_set_mnt_opts(struct super_block *sb, 281 void *mnt_opts, 282 unsigned long kern_flags, 283 unsigned long *set_kern_flags); 284 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 285 struct super_block *newsb, 286 unsigned long kern_flags, 287 unsigned long *set_kern_flags); 288 int security_add_mnt_opt(const char *option, const char *val, 289 int len, void **mnt_opts); 290 int security_move_mount(const struct path *from_path, const struct path *to_path); 291 int security_dentry_init_security(struct dentry *dentry, int mode, 292 const struct qstr *name, void **ctx, 293 u32 *ctxlen); 294 int security_dentry_create_files_as(struct dentry *dentry, int mode, 295 struct qstr *name, 296 const struct cred *old, 297 struct cred *new); 298 299 int security_inode_alloc(struct inode *inode); 300 void security_inode_free(struct inode *inode); 301 int security_inode_init_security(struct inode *inode, struct inode *dir, 302 const struct qstr *qstr, 303 initxattrs initxattrs, void *fs_data); 304 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 305 const struct qstr *qstr, const char **name, 306 void **value, size_t *len); 307 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 308 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 309 struct dentry *new_dentry); 310 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 311 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 312 const char *old_name); 313 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 314 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 315 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 316 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 317 struct inode *new_dir, struct dentry *new_dentry, 318 unsigned int flags); 319 int security_inode_readlink(struct dentry *dentry); 320 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 321 bool rcu); 322 int security_inode_permission(struct inode *inode, int mask); 323 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 324 int security_inode_getattr(const struct path *path); 325 int security_inode_setxattr(struct dentry *dentry, const char *name, 326 const void *value, size_t size, int flags); 327 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 328 const void *value, size_t size, int flags); 329 int security_inode_getxattr(struct dentry *dentry, const char *name); 330 int security_inode_listxattr(struct dentry *dentry); 331 int security_inode_removexattr(struct dentry *dentry, const char *name); 332 int security_inode_need_killpriv(struct dentry *dentry); 333 int security_inode_killpriv(struct dentry *dentry); 334 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 335 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 336 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 337 void security_inode_getsecid(struct inode *inode, u32 *secid); 338 int security_inode_copy_up(struct dentry *src, struct cred **new); 339 int security_inode_copy_up_xattr(const char *name); 340 int security_kernfs_init_security(struct kernfs_node *kn_dir, 341 struct kernfs_node *kn); 342 int security_file_permission(struct file *file, int mask); 343 int security_file_alloc(struct file *file); 344 void security_file_free(struct file *file); 345 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 346 int security_mmap_file(struct file *file, unsigned long prot, 347 unsigned long flags); 348 int security_mmap_addr(unsigned long addr); 349 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 350 unsigned long prot); 351 int security_file_lock(struct file *file, unsigned int cmd); 352 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 353 void security_file_set_fowner(struct file *file); 354 int security_file_send_sigiotask(struct task_struct *tsk, 355 struct fown_struct *fown, int sig); 356 int security_file_receive(struct file *file); 357 int security_file_open(struct file *file); 358 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 359 void security_task_free(struct task_struct *task); 360 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 361 void security_cred_free(struct cred *cred); 362 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 363 void security_transfer_creds(struct cred *new, const struct cred *old); 364 void security_cred_getsecid(const struct cred *c, u32 *secid); 365 int security_kernel_act_as(struct cred *new, u32 secid); 366 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 367 int security_kernel_module_request(char *kmod_name); 368 int security_kernel_load_data(enum kernel_load_data_id id); 369 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 370 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 371 enum kernel_read_file_id id); 372 int security_task_fix_setuid(struct cred *new, const struct cred *old, 373 int flags); 374 int security_task_setpgid(struct task_struct *p, pid_t pgid); 375 int security_task_getpgid(struct task_struct *p); 376 int security_task_getsid(struct task_struct *p); 377 void security_task_getsecid(struct task_struct *p, u32 *secid); 378 int security_task_setnice(struct task_struct *p, int nice); 379 int security_task_setioprio(struct task_struct *p, int ioprio); 380 int security_task_getioprio(struct task_struct *p); 381 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 382 unsigned int flags); 383 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 384 struct rlimit *new_rlim); 385 int security_task_setscheduler(struct task_struct *p); 386 int security_task_getscheduler(struct task_struct *p); 387 int security_task_movememory(struct task_struct *p); 388 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 389 int sig, const struct cred *cred); 390 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 391 unsigned long arg4, unsigned long arg5); 392 void security_task_to_inode(struct task_struct *p, struct inode *inode); 393 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 394 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 395 int security_msg_msg_alloc(struct msg_msg *msg); 396 void security_msg_msg_free(struct msg_msg *msg); 397 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 398 void security_msg_queue_free(struct kern_ipc_perm *msq); 399 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 400 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 401 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 402 struct msg_msg *msg, int msqflg); 403 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 404 struct task_struct *target, long type, int mode); 405 int security_shm_alloc(struct kern_ipc_perm *shp); 406 void security_shm_free(struct kern_ipc_perm *shp); 407 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 408 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 409 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 410 int security_sem_alloc(struct kern_ipc_perm *sma); 411 void security_sem_free(struct kern_ipc_perm *sma); 412 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 413 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 414 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 415 unsigned nsops, int alter); 416 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 417 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 418 char **value); 419 int security_setprocattr(const char *lsm, const char *name, void *value, 420 size_t size); 421 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 422 int security_ismaclabel(const char *name); 423 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 424 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 425 void security_release_secctx(char *secdata, u32 seclen); 426 427 void security_inode_invalidate_secctx(struct inode *inode); 428 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 429 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 430 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 431 int security_locked_down(enum lockdown_reason what); 432 #else /* CONFIG_SECURITY */ 433 434 static inline int call_lsm_notifier(enum lsm_event event, void *data) 435 { 436 return 0; 437 } 438 439 static inline int register_lsm_notifier(struct notifier_block *nb) 440 { 441 return 0; 442 } 443 444 static inline int unregister_lsm_notifier(struct notifier_block *nb) 445 { 446 return 0; 447 } 448 449 static inline void security_free_mnt_opts(void **mnt_opts) 450 { 451 } 452 453 /* 454 * This is the default capabilities functionality. Most of these functions 455 * are just stubbed out, but a few must call the proper capable code. 456 */ 457 458 static inline int security_init(void) 459 { 460 return 0; 461 } 462 463 static inline int early_security_init(void) 464 { 465 return 0; 466 } 467 468 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 469 { 470 return 0; 471 } 472 473 static inline int security_binder_transaction(struct task_struct *from, 474 struct task_struct *to) 475 { 476 return 0; 477 } 478 479 static inline int security_binder_transfer_binder(struct task_struct *from, 480 struct task_struct *to) 481 { 482 return 0; 483 } 484 485 static inline int security_binder_transfer_file(struct task_struct *from, 486 struct task_struct *to, 487 struct file *file) 488 { 489 return 0; 490 } 491 492 static inline int security_ptrace_access_check(struct task_struct *child, 493 unsigned int mode) 494 { 495 return cap_ptrace_access_check(child, mode); 496 } 497 498 static inline int security_ptrace_traceme(struct task_struct *parent) 499 { 500 return cap_ptrace_traceme(parent); 501 } 502 503 static inline int security_capget(struct task_struct *target, 504 kernel_cap_t *effective, 505 kernel_cap_t *inheritable, 506 kernel_cap_t *permitted) 507 { 508 return cap_capget(target, effective, inheritable, permitted); 509 } 510 511 static inline int security_capset(struct cred *new, 512 const struct cred *old, 513 const kernel_cap_t *effective, 514 const kernel_cap_t *inheritable, 515 const kernel_cap_t *permitted) 516 { 517 return cap_capset(new, old, effective, inheritable, permitted); 518 } 519 520 static inline int security_capable(const struct cred *cred, 521 struct user_namespace *ns, 522 int cap, 523 unsigned int opts) 524 { 525 return cap_capable(cred, ns, cap, opts); 526 } 527 528 static inline int security_quotactl(int cmds, int type, int id, 529 struct super_block *sb) 530 { 531 return 0; 532 } 533 534 static inline int security_quota_on(struct dentry *dentry) 535 { 536 return 0; 537 } 538 539 static inline int security_syslog(int type) 540 { 541 return 0; 542 } 543 544 static inline int security_settime64(const struct timespec64 *ts, 545 const struct timezone *tz) 546 { 547 return cap_settime(ts, tz); 548 } 549 550 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 551 { 552 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 553 } 554 555 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 556 { 557 return cap_bprm_set_creds(bprm); 558 } 559 560 static inline int security_bprm_check(struct linux_binprm *bprm) 561 { 562 return 0; 563 } 564 565 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 566 { 567 } 568 569 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 570 { 571 } 572 573 static inline int security_fs_context_dup(struct fs_context *fc, 574 struct fs_context *src_fc) 575 { 576 return 0; 577 } 578 static inline int security_fs_context_parse_param(struct fs_context *fc, 579 struct fs_parameter *param) 580 { 581 return -ENOPARAM; 582 } 583 584 static inline int security_sb_alloc(struct super_block *sb) 585 { 586 return 0; 587 } 588 589 static inline void security_sb_free(struct super_block *sb) 590 { } 591 592 static inline int security_sb_eat_lsm_opts(char *options, 593 void **mnt_opts) 594 { 595 return 0; 596 } 597 598 static inline int security_sb_remount(struct super_block *sb, 599 void *mnt_opts) 600 { 601 return 0; 602 } 603 604 static inline int security_sb_kern_mount(struct super_block *sb) 605 { 606 return 0; 607 } 608 609 static inline int security_sb_show_options(struct seq_file *m, 610 struct super_block *sb) 611 { 612 return 0; 613 } 614 615 static inline int security_sb_statfs(struct dentry *dentry) 616 { 617 return 0; 618 } 619 620 static inline int security_sb_mount(const char *dev_name, const struct path *path, 621 const char *type, unsigned long flags, 622 void *data) 623 { 624 return 0; 625 } 626 627 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 628 { 629 return 0; 630 } 631 632 static inline int security_sb_pivotroot(const struct path *old_path, 633 const struct path *new_path) 634 { 635 return 0; 636 } 637 638 static inline int security_sb_set_mnt_opts(struct super_block *sb, 639 void *mnt_opts, 640 unsigned long kern_flags, 641 unsigned long *set_kern_flags) 642 { 643 return 0; 644 } 645 646 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 647 struct super_block *newsb, 648 unsigned long kern_flags, 649 unsigned long *set_kern_flags) 650 { 651 return 0; 652 } 653 654 static inline int security_add_mnt_opt(const char *option, const char *val, 655 int len, void **mnt_opts) 656 { 657 return 0; 658 } 659 660 static inline int security_move_mount(const struct path *from_path, 661 const struct path *to_path) 662 { 663 return 0; 664 } 665 666 static inline int security_inode_alloc(struct inode *inode) 667 { 668 return 0; 669 } 670 671 static inline void security_inode_free(struct inode *inode) 672 { } 673 674 static inline int security_dentry_init_security(struct dentry *dentry, 675 int mode, 676 const struct qstr *name, 677 void **ctx, 678 u32 *ctxlen) 679 { 680 return -EOPNOTSUPP; 681 } 682 683 static inline int security_dentry_create_files_as(struct dentry *dentry, 684 int mode, struct qstr *name, 685 const struct cred *old, 686 struct cred *new) 687 { 688 return 0; 689 } 690 691 692 static inline int security_inode_init_security(struct inode *inode, 693 struct inode *dir, 694 const struct qstr *qstr, 695 const initxattrs xattrs, 696 void *fs_data) 697 { 698 return 0; 699 } 700 701 static inline int security_old_inode_init_security(struct inode *inode, 702 struct inode *dir, 703 const struct qstr *qstr, 704 const char **name, 705 void **value, size_t *len) 706 { 707 return -EOPNOTSUPP; 708 } 709 710 static inline int security_inode_create(struct inode *dir, 711 struct dentry *dentry, 712 umode_t mode) 713 { 714 return 0; 715 } 716 717 static inline int security_inode_link(struct dentry *old_dentry, 718 struct inode *dir, 719 struct dentry *new_dentry) 720 { 721 return 0; 722 } 723 724 static inline int security_inode_unlink(struct inode *dir, 725 struct dentry *dentry) 726 { 727 return 0; 728 } 729 730 static inline int security_inode_symlink(struct inode *dir, 731 struct dentry *dentry, 732 const char *old_name) 733 { 734 return 0; 735 } 736 737 static inline int security_inode_mkdir(struct inode *dir, 738 struct dentry *dentry, 739 int mode) 740 { 741 return 0; 742 } 743 744 static inline int security_inode_rmdir(struct inode *dir, 745 struct dentry *dentry) 746 { 747 return 0; 748 } 749 750 static inline int security_inode_mknod(struct inode *dir, 751 struct dentry *dentry, 752 int mode, dev_t dev) 753 { 754 return 0; 755 } 756 757 static inline int security_inode_rename(struct inode *old_dir, 758 struct dentry *old_dentry, 759 struct inode *new_dir, 760 struct dentry *new_dentry, 761 unsigned int flags) 762 { 763 return 0; 764 } 765 766 static inline int security_inode_readlink(struct dentry *dentry) 767 { 768 return 0; 769 } 770 771 static inline int security_inode_follow_link(struct dentry *dentry, 772 struct inode *inode, 773 bool rcu) 774 { 775 return 0; 776 } 777 778 static inline int security_inode_permission(struct inode *inode, int mask) 779 { 780 return 0; 781 } 782 783 static inline int security_inode_setattr(struct dentry *dentry, 784 struct iattr *attr) 785 { 786 return 0; 787 } 788 789 static inline int security_inode_getattr(const struct path *path) 790 { 791 return 0; 792 } 793 794 static inline int security_inode_setxattr(struct dentry *dentry, 795 const char *name, const void *value, size_t size, int flags) 796 { 797 return cap_inode_setxattr(dentry, name, value, size, flags); 798 } 799 800 static inline void security_inode_post_setxattr(struct dentry *dentry, 801 const char *name, const void *value, size_t size, int flags) 802 { } 803 804 static inline int security_inode_getxattr(struct dentry *dentry, 805 const char *name) 806 { 807 return 0; 808 } 809 810 static inline int security_inode_listxattr(struct dentry *dentry) 811 { 812 return 0; 813 } 814 815 static inline int security_inode_removexattr(struct dentry *dentry, 816 const char *name) 817 { 818 return cap_inode_removexattr(dentry, name); 819 } 820 821 static inline int security_inode_need_killpriv(struct dentry *dentry) 822 { 823 return cap_inode_need_killpriv(dentry); 824 } 825 826 static inline int security_inode_killpriv(struct dentry *dentry) 827 { 828 return cap_inode_killpriv(dentry); 829 } 830 831 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 832 { 833 return -EOPNOTSUPP; 834 } 835 836 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 837 { 838 return -EOPNOTSUPP; 839 } 840 841 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 842 { 843 return 0; 844 } 845 846 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 847 { 848 *secid = 0; 849 } 850 851 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 852 { 853 return 0; 854 } 855 856 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 857 struct kernfs_node *kn) 858 { 859 return 0; 860 } 861 862 static inline int security_inode_copy_up_xattr(const char *name) 863 { 864 return -EOPNOTSUPP; 865 } 866 867 static inline int security_file_permission(struct file *file, int mask) 868 { 869 return 0; 870 } 871 872 static inline int security_file_alloc(struct file *file) 873 { 874 return 0; 875 } 876 877 static inline void security_file_free(struct file *file) 878 { } 879 880 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 881 unsigned long arg) 882 { 883 return 0; 884 } 885 886 static inline int security_mmap_file(struct file *file, unsigned long prot, 887 unsigned long flags) 888 { 889 return 0; 890 } 891 892 static inline int security_mmap_addr(unsigned long addr) 893 { 894 return cap_mmap_addr(addr); 895 } 896 897 static inline int security_file_mprotect(struct vm_area_struct *vma, 898 unsigned long reqprot, 899 unsigned long prot) 900 { 901 return 0; 902 } 903 904 static inline int security_file_lock(struct file *file, unsigned int cmd) 905 { 906 return 0; 907 } 908 909 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 910 unsigned long arg) 911 { 912 return 0; 913 } 914 915 static inline void security_file_set_fowner(struct file *file) 916 { 917 return; 918 } 919 920 static inline int security_file_send_sigiotask(struct task_struct *tsk, 921 struct fown_struct *fown, 922 int sig) 923 { 924 return 0; 925 } 926 927 static inline int security_file_receive(struct file *file) 928 { 929 return 0; 930 } 931 932 static inline int security_file_open(struct file *file) 933 { 934 return 0; 935 } 936 937 static inline int security_task_alloc(struct task_struct *task, 938 unsigned long clone_flags) 939 { 940 return 0; 941 } 942 943 static inline void security_task_free(struct task_struct *task) 944 { } 945 946 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 947 { 948 return 0; 949 } 950 951 static inline void security_cred_free(struct cred *cred) 952 { } 953 954 static inline int security_prepare_creds(struct cred *new, 955 const struct cred *old, 956 gfp_t gfp) 957 { 958 return 0; 959 } 960 961 static inline void security_transfer_creds(struct cred *new, 962 const struct cred *old) 963 { 964 } 965 966 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 967 { 968 return 0; 969 } 970 971 static inline int security_kernel_create_files_as(struct cred *cred, 972 struct inode *inode) 973 { 974 return 0; 975 } 976 977 static inline int security_kernel_module_request(char *kmod_name) 978 { 979 return 0; 980 } 981 982 static inline int security_kernel_load_data(enum kernel_load_data_id id) 983 { 984 return 0; 985 } 986 987 static inline int security_kernel_read_file(struct file *file, 988 enum kernel_read_file_id id) 989 { 990 return 0; 991 } 992 993 static inline int security_kernel_post_read_file(struct file *file, 994 char *buf, loff_t size, 995 enum kernel_read_file_id id) 996 { 997 return 0; 998 } 999 1000 static inline int security_task_fix_setuid(struct cred *new, 1001 const struct cred *old, 1002 int flags) 1003 { 1004 return cap_task_fix_setuid(new, old, flags); 1005 } 1006 1007 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1008 { 1009 return 0; 1010 } 1011 1012 static inline int security_task_getpgid(struct task_struct *p) 1013 { 1014 return 0; 1015 } 1016 1017 static inline int security_task_getsid(struct task_struct *p) 1018 { 1019 return 0; 1020 } 1021 1022 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1023 { 1024 *secid = 0; 1025 } 1026 1027 static inline int security_task_setnice(struct task_struct *p, int nice) 1028 { 1029 return cap_task_setnice(p, nice); 1030 } 1031 1032 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1033 { 1034 return cap_task_setioprio(p, ioprio); 1035 } 1036 1037 static inline int security_task_getioprio(struct task_struct *p) 1038 { 1039 return 0; 1040 } 1041 1042 static inline int security_task_prlimit(const struct cred *cred, 1043 const struct cred *tcred, 1044 unsigned int flags) 1045 { 1046 return 0; 1047 } 1048 1049 static inline int security_task_setrlimit(struct task_struct *p, 1050 unsigned int resource, 1051 struct rlimit *new_rlim) 1052 { 1053 return 0; 1054 } 1055 1056 static inline int security_task_setscheduler(struct task_struct *p) 1057 { 1058 return cap_task_setscheduler(p); 1059 } 1060 1061 static inline int security_task_getscheduler(struct task_struct *p) 1062 { 1063 return 0; 1064 } 1065 1066 static inline int security_task_movememory(struct task_struct *p) 1067 { 1068 return 0; 1069 } 1070 1071 static inline int security_task_kill(struct task_struct *p, 1072 struct kernel_siginfo *info, int sig, 1073 const struct cred *cred) 1074 { 1075 return 0; 1076 } 1077 1078 static inline int security_task_prctl(int option, unsigned long arg2, 1079 unsigned long arg3, 1080 unsigned long arg4, 1081 unsigned long arg5) 1082 { 1083 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1084 } 1085 1086 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1087 { } 1088 1089 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1090 short flag) 1091 { 1092 return 0; 1093 } 1094 1095 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1096 { 1097 *secid = 0; 1098 } 1099 1100 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1101 { 1102 return 0; 1103 } 1104 1105 static inline void security_msg_msg_free(struct msg_msg *msg) 1106 { } 1107 1108 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1109 { 1110 return 0; 1111 } 1112 1113 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1114 { } 1115 1116 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1117 int msqflg) 1118 { 1119 return 0; 1120 } 1121 1122 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1123 { 1124 return 0; 1125 } 1126 1127 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1128 struct msg_msg *msg, int msqflg) 1129 { 1130 return 0; 1131 } 1132 1133 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1134 struct msg_msg *msg, 1135 struct task_struct *target, 1136 long type, int mode) 1137 { 1138 return 0; 1139 } 1140 1141 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1142 { 1143 return 0; 1144 } 1145 1146 static inline void security_shm_free(struct kern_ipc_perm *shp) 1147 { } 1148 1149 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1150 int shmflg) 1151 { 1152 return 0; 1153 } 1154 1155 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1156 { 1157 return 0; 1158 } 1159 1160 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1161 char __user *shmaddr, int shmflg) 1162 { 1163 return 0; 1164 } 1165 1166 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1167 { 1168 return 0; 1169 } 1170 1171 static inline void security_sem_free(struct kern_ipc_perm *sma) 1172 { } 1173 1174 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1175 { 1176 return 0; 1177 } 1178 1179 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1180 { 1181 return 0; 1182 } 1183 1184 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1185 struct sembuf *sops, unsigned nsops, 1186 int alter) 1187 { 1188 return 0; 1189 } 1190 1191 static inline void security_d_instantiate(struct dentry *dentry, 1192 struct inode *inode) 1193 { } 1194 1195 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1196 char *name, char **value) 1197 { 1198 return -EINVAL; 1199 } 1200 1201 static inline int security_setprocattr(const char *lsm, char *name, 1202 void *value, size_t size) 1203 { 1204 return -EINVAL; 1205 } 1206 1207 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1208 { 1209 return 0; 1210 } 1211 1212 static inline int security_ismaclabel(const char *name) 1213 { 1214 return 0; 1215 } 1216 1217 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1218 { 1219 return -EOPNOTSUPP; 1220 } 1221 1222 static inline int security_secctx_to_secid(const char *secdata, 1223 u32 seclen, 1224 u32 *secid) 1225 { 1226 return -EOPNOTSUPP; 1227 } 1228 1229 static inline void security_release_secctx(char *secdata, u32 seclen) 1230 { 1231 } 1232 1233 static inline void security_inode_invalidate_secctx(struct inode *inode) 1234 { 1235 } 1236 1237 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1238 { 1239 return -EOPNOTSUPP; 1240 } 1241 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1242 { 1243 return -EOPNOTSUPP; 1244 } 1245 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1246 { 1247 return -EOPNOTSUPP; 1248 } 1249 static inline int security_locked_down(enum lockdown_reason what) 1250 { 1251 return 0; 1252 } 1253 #endif /* CONFIG_SECURITY */ 1254 1255 #ifdef CONFIG_SECURITY_NETWORK 1256 1257 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1258 int security_unix_may_send(struct socket *sock, struct socket *other); 1259 int security_socket_create(int family, int type, int protocol, int kern); 1260 int security_socket_post_create(struct socket *sock, int family, 1261 int type, int protocol, int kern); 1262 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1263 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1264 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1265 int security_socket_listen(struct socket *sock, int backlog); 1266 int security_socket_accept(struct socket *sock, struct socket *newsock); 1267 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1268 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1269 int size, int flags); 1270 int security_socket_getsockname(struct socket *sock); 1271 int security_socket_getpeername(struct socket *sock); 1272 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1273 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1274 int security_socket_shutdown(struct socket *sock, int how); 1275 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1276 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1277 int __user *optlen, unsigned len); 1278 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1279 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1280 void security_sk_free(struct sock *sk); 1281 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1282 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1283 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1284 void security_sock_graft(struct sock*sk, struct socket *parent); 1285 int security_inet_conn_request(struct sock *sk, 1286 struct sk_buff *skb, struct request_sock *req); 1287 void security_inet_csk_clone(struct sock *newsk, 1288 const struct request_sock *req); 1289 void security_inet_conn_established(struct sock *sk, 1290 struct sk_buff *skb); 1291 int security_secmark_relabel_packet(u32 secid); 1292 void security_secmark_refcount_inc(void); 1293 void security_secmark_refcount_dec(void); 1294 int security_tun_dev_alloc_security(void **security); 1295 void security_tun_dev_free_security(void *security); 1296 int security_tun_dev_create(void); 1297 int security_tun_dev_attach_queue(void *security); 1298 int security_tun_dev_attach(struct sock *sk, void *security); 1299 int security_tun_dev_open(void *security); 1300 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1301 int security_sctp_bind_connect(struct sock *sk, int optname, 1302 struct sockaddr *address, int addrlen); 1303 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1304 struct sock *newsk); 1305 1306 #else /* CONFIG_SECURITY_NETWORK */ 1307 static inline int security_unix_stream_connect(struct sock *sock, 1308 struct sock *other, 1309 struct sock *newsk) 1310 { 1311 return 0; 1312 } 1313 1314 static inline int security_unix_may_send(struct socket *sock, 1315 struct socket *other) 1316 { 1317 return 0; 1318 } 1319 1320 static inline int security_socket_create(int family, int type, 1321 int protocol, int kern) 1322 { 1323 return 0; 1324 } 1325 1326 static inline int security_socket_post_create(struct socket *sock, 1327 int family, 1328 int type, 1329 int protocol, int kern) 1330 { 1331 return 0; 1332 } 1333 1334 static inline int security_socket_socketpair(struct socket *socka, 1335 struct socket *sockb) 1336 { 1337 return 0; 1338 } 1339 1340 static inline int security_socket_bind(struct socket *sock, 1341 struct sockaddr *address, 1342 int addrlen) 1343 { 1344 return 0; 1345 } 1346 1347 static inline int security_socket_connect(struct socket *sock, 1348 struct sockaddr *address, 1349 int addrlen) 1350 { 1351 return 0; 1352 } 1353 1354 static inline int security_socket_listen(struct socket *sock, int backlog) 1355 { 1356 return 0; 1357 } 1358 1359 static inline int security_socket_accept(struct socket *sock, 1360 struct socket *newsock) 1361 { 1362 return 0; 1363 } 1364 1365 static inline int security_socket_sendmsg(struct socket *sock, 1366 struct msghdr *msg, int size) 1367 { 1368 return 0; 1369 } 1370 1371 static inline int security_socket_recvmsg(struct socket *sock, 1372 struct msghdr *msg, int size, 1373 int flags) 1374 { 1375 return 0; 1376 } 1377 1378 static inline int security_socket_getsockname(struct socket *sock) 1379 { 1380 return 0; 1381 } 1382 1383 static inline int security_socket_getpeername(struct socket *sock) 1384 { 1385 return 0; 1386 } 1387 1388 static inline int security_socket_getsockopt(struct socket *sock, 1389 int level, int optname) 1390 { 1391 return 0; 1392 } 1393 1394 static inline int security_socket_setsockopt(struct socket *sock, 1395 int level, int optname) 1396 { 1397 return 0; 1398 } 1399 1400 static inline int security_socket_shutdown(struct socket *sock, int how) 1401 { 1402 return 0; 1403 } 1404 static inline int security_sock_rcv_skb(struct sock *sk, 1405 struct sk_buff *skb) 1406 { 1407 return 0; 1408 } 1409 1410 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1411 int __user *optlen, unsigned len) 1412 { 1413 return -ENOPROTOOPT; 1414 } 1415 1416 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1417 { 1418 return -ENOPROTOOPT; 1419 } 1420 1421 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1422 { 1423 return 0; 1424 } 1425 1426 static inline void security_sk_free(struct sock *sk) 1427 { 1428 } 1429 1430 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1431 { 1432 } 1433 1434 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1435 { 1436 } 1437 1438 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1439 { 1440 } 1441 1442 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1443 { 1444 } 1445 1446 static inline int security_inet_conn_request(struct sock *sk, 1447 struct sk_buff *skb, struct request_sock *req) 1448 { 1449 return 0; 1450 } 1451 1452 static inline void security_inet_csk_clone(struct sock *newsk, 1453 const struct request_sock *req) 1454 { 1455 } 1456 1457 static inline void security_inet_conn_established(struct sock *sk, 1458 struct sk_buff *skb) 1459 { 1460 } 1461 1462 static inline int security_secmark_relabel_packet(u32 secid) 1463 { 1464 return 0; 1465 } 1466 1467 static inline void security_secmark_refcount_inc(void) 1468 { 1469 } 1470 1471 static inline void security_secmark_refcount_dec(void) 1472 { 1473 } 1474 1475 static inline int security_tun_dev_alloc_security(void **security) 1476 { 1477 return 0; 1478 } 1479 1480 static inline void security_tun_dev_free_security(void *security) 1481 { 1482 } 1483 1484 static inline int security_tun_dev_create(void) 1485 { 1486 return 0; 1487 } 1488 1489 static inline int security_tun_dev_attach_queue(void *security) 1490 { 1491 return 0; 1492 } 1493 1494 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1495 { 1496 return 0; 1497 } 1498 1499 static inline int security_tun_dev_open(void *security) 1500 { 1501 return 0; 1502 } 1503 1504 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1505 struct sk_buff *skb) 1506 { 1507 return 0; 1508 } 1509 1510 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1511 struct sockaddr *address, 1512 int addrlen) 1513 { 1514 return 0; 1515 } 1516 1517 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1518 struct sock *sk, 1519 struct sock *newsk) 1520 { 1521 } 1522 #endif /* CONFIG_SECURITY_NETWORK */ 1523 1524 #ifdef CONFIG_SECURITY_INFINIBAND 1525 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1526 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1527 int security_ib_alloc_security(void **sec); 1528 void security_ib_free_security(void *sec); 1529 #else /* CONFIG_SECURITY_INFINIBAND */ 1530 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1531 { 1532 return 0; 1533 } 1534 1535 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1536 { 1537 return 0; 1538 } 1539 1540 static inline int security_ib_alloc_security(void **sec) 1541 { 1542 return 0; 1543 } 1544 1545 static inline void security_ib_free_security(void *sec) 1546 { 1547 } 1548 #endif /* CONFIG_SECURITY_INFINIBAND */ 1549 1550 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1551 1552 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1553 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1554 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1555 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1556 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1557 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1558 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1559 struct xfrm_sec_ctx *polsec, u32 secid); 1560 int security_xfrm_state_delete(struct xfrm_state *x); 1561 void security_xfrm_state_free(struct xfrm_state *x); 1562 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1563 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1564 struct xfrm_policy *xp, 1565 const struct flowi *fl); 1566 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1567 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1568 1569 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1570 1571 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1572 struct xfrm_user_sec_ctx *sec_ctx, 1573 gfp_t gfp) 1574 { 1575 return 0; 1576 } 1577 1578 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1579 { 1580 return 0; 1581 } 1582 1583 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1584 { 1585 } 1586 1587 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1588 { 1589 return 0; 1590 } 1591 1592 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1593 struct xfrm_user_sec_ctx *sec_ctx) 1594 { 1595 return 0; 1596 } 1597 1598 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1599 struct xfrm_sec_ctx *polsec, u32 secid) 1600 { 1601 return 0; 1602 } 1603 1604 static inline void security_xfrm_state_free(struct xfrm_state *x) 1605 { 1606 } 1607 1608 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1609 { 1610 return 0; 1611 } 1612 1613 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1614 { 1615 return 0; 1616 } 1617 1618 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1619 struct xfrm_policy *xp, const struct flowi *fl) 1620 { 1621 return 1; 1622 } 1623 1624 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1625 { 1626 return 0; 1627 } 1628 1629 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1630 { 1631 } 1632 1633 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1634 1635 #ifdef CONFIG_SECURITY_PATH 1636 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1637 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1638 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1639 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1640 unsigned int dev); 1641 int security_path_truncate(const struct path *path); 1642 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1643 const char *old_name); 1644 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1645 struct dentry *new_dentry); 1646 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1647 const struct path *new_dir, struct dentry *new_dentry, 1648 unsigned int flags); 1649 int security_path_chmod(const struct path *path, umode_t mode); 1650 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1651 int security_path_chroot(const struct path *path); 1652 #else /* CONFIG_SECURITY_PATH */ 1653 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1654 { 1655 return 0; 1656 } 1657 1658 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1659 umode_t mode) 1660 { 1661 return 0; 1662 } 1663 1664 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1665 { 1666 return 0; 1667 } 1668 1669 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1670 umode_t mode, unsigned int dev) 1671 { 1672 return 0; 1673 } 1674 1675 static inline int security_path_truncate(const struct path *path) 1676 { 1677 return 0; 1678 } 1679 1680 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1681 const char *old_name) 1682 { 1683 return 0; 1684 } 1685 1686 static inline int security_path_link(struct dentry *old_dentry, 1687 const struct path *new_dir, 1688 struct dentry *new_dentry) 1689 { 1690 return 0; 1691 } 1692 1693 static inline int security_path_rename(const struct path *old_dir, 1694 struct dentry *old_dentry, 1695 const struct path *new_dir, 1696 struct dentry *new_dentry, 1697 unsigned int flags) 1698 { 1699 return 0; 1700 } 1701 1702 static inline int security_path_chmod(const struct path *path, umode_t mode) 1703 { 1704 return 0; 1705 } 1706 1707 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1708 { 1709 return 0; 1710 } 1711 1712 static inline int security_path_chroot(const struct path *path) 1713 { 1714 return 0; 1715 } 1716 #endif /* CONFIG_SECURITY_PATH */ 1717 1718 #ifdef CONFIG_KEYS 1719 #ifdef CONFIG_SECURITY 1720 1721 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1722 void security_key_free(struct key *key); 1723 int security_key_permission(key_ref_t key_ref, 1724 const struct cred *cred, unsigned perm); 1725 int security_key_getsecurity(struct key *key, char **_buffer); 1726 1727 #else 1728 1729 static inline int security_key_alloc(struct key *key, 1730 const struct cred *cred, 1731 unsigned long flags) 1732 { 1733 return 0; 1734 } 1735 1736 static inline void security_key_free(struct key *key) 1737 { 1738 } 1739 1740 static inline int security_key_permission(key_ref_t key_ref, 1741 const struct cred *cred, 1742 unsigned perm) 1743 { 1744 return 0; 1745 } 1746 1747 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1748 { 1749 *_buffer = NULL; 1750 return 0; 1751 } 1752 1753 #endif 1754 #endif /* CONFIG_KEYS */ 1755 1756 #ifdef CONFIG_AUDIT 1757 #ifdef CONFIG_SECURITY 1758 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1759 int security_audit_rule_known(struct audit_krule *krule); 1760 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1761 void security_audit_rule_free(void *lsmrule); 1762 1763 #else 1764 1765 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1766 void **lsmrule) 1767 { 1768 return 0; 1769 } 1770 1771 static inline int security_audit_rule_known(struct audit_krule *krule) 1772 { 1773 return 0; 1774 } 1775 1776 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1777 void *lsmrule) 1778 { 1779 return 0; 1780 } 1781 1782 static inline void security_audit_rule_free(void *lsmrule) 1783 { } 1784 1785 #endif /* CONFIG_SECURITY */ 1786 #endif /* CONFIG_AUDIT */ 1787 1788 #ifdef CONFIG_SECURITYFS 1789 1790 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1791 struct dentry *parent, void *data, 1792 const struct file_operations *fops); 1793 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1794 struct dentry *securityfs_create_symlink(const char *name, 1795 struct dentry *parent, 1796 const char *target, 1797 const struct inode_operations *iops); 1798 extern void securityfs_remove(struct dentry *dentry); 1799 1800 #else /* CONFIG_SECURITYFS */ 1801 1802 static inline struct dentry *securityfs_create_dir(const char *name, 1803 struct dentry *parent) 1804 { 1805 return ERR_PTR(-ENODEV); 1806 } 1807 1808 static inline struct dentry *securityfs_create_file(const char *name, 1809 umode_t mode, 1810 struct dentry *parent, 1811 void *data, 1812 const struct file_operations *fops) 1813 { 1814 return ERR_PTR(-ENODEV); 1815 } 1816 1817 static inline struct dentry *securityfs_create_symlink(const char *name, 1818 struct dentry *parent, 1819 const char *target, 1820 const struct inode_operations *iops) 1821 { 1822 return ERR_PTR(-ENODEV); 1823 } 1824 1825 static inline void securityfs_remove(struct dentry *dentry) 1826 {} 1827 1828 #endif 1829 1830 #ifdef CONFIG_BPF_SYSCALL 1831 union bpf_attr; 1832 struct bpf_map; 1833 struct bpf_prog; 1834 struct bpf_prog_aux; 1835 #ifdef CONFIG_SECURITY 1836 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1837 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1838 extern int security_bpf_prog(struct bpf_prog *prog); 1839 extern int security_bpf_map_alloc(struct bpf_map *map); 1840 extern void security_bpf_map_free(struct bpf_map *map); 1841 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1842 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1843 #else 1844 static inline int security_bpf(int cmd, union bpf_attr *attr, 1845 unsigned int size) 1846 { 1847 return 0; 1848 } 1849 1850 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1851 { 1852 return 0; 1853 } 1854 1855 static inline int security_bpf_prog(struct bpf_prog *prog) 1856 { 1857 return 0; 1858 } 1859 1860 static inline int security_bpf_map_alloc(struct bpf_map *map) 1861 { 1862 return 0; 1863 } 1864 1865 static inline void security_bpf_map_free(struct bpf_map *map) 1866 { } 1867 1868 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1869 { 1870 return 0; 1871 } 1872 1873 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1874 { } 1875 #endif /* CONFIG_SECURITY */ 1876 #endif /* CONFIG_BPF_SYSCALL */ 1877 1878 #endif /* ! __LINUX_SECURITY_H */ 1879 1880