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_IOPORT, 112 LOCKDOWN_INTEGRITY_MAX, 113 LOCKDOWN_CONFIDENTIALITY_MAX, 114 }; 115 116 /* These functions are in security/commoncap.c */ 117 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 118 int cap, unsigned int opts); 119 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 120 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 121 extern int cap_ptrace_traceme(struct task_struct *parent); 122 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 123 extern int cap_capset(struct cred *new, const struct cred *old, 124 const kernel_cap_t *effective, 125 const kernel_cap_t *inheritable, 126 const kernel_cap_t *permitted); 127 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 128 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 129 const void *value, size_t size, int flags); 130 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 131 extern int cap_inode_need_killpriv(struct dentry *dentry); 132 extern int cap_inode_killpriv(struct dentry *dentry); 133 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 134 void **buffer, bool alloc); 135 extern int cap_mmap_addr(unsigned long addr); 136 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 137 unsigned long prot, unsigned long flags); 138 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 139 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 140 unsigned long arg4, unsigned long arg5); 141 extern int cap_task_setscheduler(struct task_struct *p); 142 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 143 extern int cap_task_setnice(struct task_struct *p, int nice); 144 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 145 146 struct msghdr; 147 struct sk_buff; 148 struct sock; 149 struct sockaddr; 150 struct socket; 151 struct flowi; 152 struct dst_entry; 153 struct xfrm_selector; 154 struct xfrm_policy; 155 struct xfrm_state; 156 struct xfrm_user_sec_ctx; 157 struct seq_file; 158 struct sctp_endpoint; 159 160 #ifdef CONFIG_MMU 161 extern unsigned long mmap_min_addr; 162 extern unsigned long dac_mmap_min_addr; 163 #else 164 #define mmap_min_addr 0UL 165 #define dac_mmap_min_addr 0UL 166 #endif 167 168 /* 169 * Values used in the task_security_ops calls 170 */ 171 /* setuid or setgid, id0 == uid or gid */ 172 #define LSM_SETID_ID 1 173 174 /* setreuid or setregid, id0 == real, id1 == eff */ 175 #define LSM_SETID_RE 2 176 177 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 178 #define LSM_SETID_RES 4 179 180 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 181 #define LSM_SETID_FS 8 182 183 /* Flags for security_task_prlimit(). */ 184 #define LSM_PRLIMIT_READ 1 185 #define LSM_PRLIMIT_WRITE 2 186 187 /* forward declares to avoid warnings */ 188 struct sched_param; 189 struct request_sock; 190 191 /* bprm->unsafe reasons */ 192 #define LSM_UNSAFE_SHARE 1 193 #define LSM_UNSAFE_PTRACE 2 194 #define LSM_UNSAFE_NO_NEW_PRIVS 4 195 196 #ifdef CONFIG_MMU 197 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 198 void __user *buffer, size_t *lenp, loff_t *ppos); 199 #endif 200 201 /* security_inode_init_security callback function to write xattrs */ 202 typedef int (*initxattrs) (struct inode *inode, 203 const struct xattr *xattr_array, void *fs_data); 204 205 206 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 207 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 208 #define __data_id_stringify(dummy, str) #str, 209 210 enum kernel_load_data_id { 211 __kernel_read_file_id(__data_id_enumify) 212 }; 213 214 static const char * const kernel_load_data_str[] = { 215 __kernel_read_file_id(__data_id_stringify) 216 }; 217 218 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 219 { 220 if ((unsigned)id >= LOADING_MAX_ID) 221 return kernel_load_data_str[LOADING_UNKNOWN]; 222 223 return kernel_load_data_str[id]; 224 } 225 226 #ifdef CONFIG_SECURITY 227 228 int call_lsm_notifier(enum lsm_event event, void *data); 229 int register_lsm_notifier(struct notifier_block *nb); 230 int unregister_lsm_notifier(struct notifier_block *nb); 231 232 /* prototypes */ 233 extern int security_init(void); 234 extern int early_security_init(void); 235 236 /* Security operations */ 237 int security_binder_set_context_mgr(struct task_struct *mgr); 238 int security_binder_transaction(struct task_struct *from, 239 struct task_struct *to); 240 int security_binder_transfer_binder(struct task_struct *from, 241 struct task_struct *to); 242 int security_binder_transfer_file(struct task_struct *from, 243 struct task_struct *to, struct file *file); 244 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 245 int security_ptrace_traceme(struct task_struct *parent); 246 int security_capget(struct task_struct *target, 247 kernel_cap_t *effective, 248 kernel_cap_t *inheritable, 249 kernel_cap_t *permitted); 250 int security_capset(struct cred *new, const struct cred *old, 251 const kernel_cap_t *effective, 252 const kernel_cap_t *inheritable, 253 const kernel_cap_t *permitted); 254 int security_capable(const struct cred *cred, 255 struct user_namespace *ns, 256 int cap, 257 unsigned int opts); 258 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 259 int security_quota_on(struct dentry *dentry); 260 int security_syslog(int type); 261 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 262 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 263 int security_bprm_set_creds(struct linux_binprm *bprm); 264 int security_bprm_check(struct linux_binprm *bprm); 265 void security_bprm_committing_creds(struct linux_binprm *bprm); 266 void security_bprm_committed_creds(struct linux_binprm *bprm); 267 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 268 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 269 int security_sb_alloc(struct super_block *sb); 270 void security_sb_free(struct super_block *sb); 271 void security_free_mnt_opts(void **mnt_opts); 272 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 273 int security_sb_remount(struct super_block *sb, void *mnt_opts); 274 int security_sb_kern_mount(struct super_block *sb); 275 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 276 int security_sb_statfs(struct dentry *dentry); 277 int security_sb_mount(const char *dev_name, const struct path *path, 278 const char *type, unsigned long flags, void *data); 279 int security_sb_umount(struct vfsmount *mnt, int flags); 280 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 281 int security_sb_set_mnt_opts(struct super_block *sb, 282 void *mnt_opts, 283 unsigned long kern_flags, 284 unsigned long *set_kern_flags); 285 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 286 struct super_block *newsb, 287 unsigned long kern_flags, 288 unsigned long *set_kern_flags); 289 int security_add_mnt_opt(const char *option, const char *val, 290 int len, void **mnt_opts); 291 int security_move_mount(const struct path *from_path, const struct path *to_path); 292 int security_dentry_init_security(struct dentry *dentry, int mode, 293 const struct qstr *name, void **ctx, 294 u32 *ctxlen); 295 int security_dentry_create_files_as(struct dentry *dentry, int mode, 296 struct qstr *name, 297 const struct cred *old, 298 struct cred *new); 299 300 int security_inode_alloc(struct inode *inode); 301 void security_inode_free(struct inode *inode); 302 int security_inode_init_security(struct inode *inode, struct inode *dir, 303 const struct qstr *qstr, 304 initxattrs initxattrs, void *fs_data); 305 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 306 const struct qstr *qstr, const char **name, 307 void **value, size_t *len); 308 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 309 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 310 struct dentry *new_dentry); 311 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 312 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 313 const char *old_name); 314 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 315 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 316 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 317 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 318 struct inode *new_dir, struct dentry *new_dentry, 319 unsigned int flags); 320 int security_inode_readlink(struct dentry *dentry); 321 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 322 bool rcu); 323 int security_inode_permission(struct inode *inode, int mask); 324 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 325 int security_inode_getattr(const struct path *path); 326 int security_inode_setxattr(struct dentry *dentry, const char *name, 327 const void *value, size_t size, int flags); 328 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 329 const void *value, size_t size, int flags); 330 int security_inode_getxattr(struct dentry *dentry, const char *name); 331 int security_inode_listxattr(struct dentry *dentry); 332 int security_inode_removexattr(struct dentry *dentry, const char *name); 333 int security_inode_need_killpriv(struct dentry *dentry); 334 int security_inode_killpriv(struct dentry *dentry); 335 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 336 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 337 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 338 void security_inode_getsecid(struct inode *inode, u32 *secid); 339 int security_inode_copy_up(struct dentry *src, struct cred **new); 340 int security_inode_copy_up_xattr(const char *name); 341 int security_kernfs_init_security(struct kernfs_node *kn_dir, 342 struct kernfs_node *kn); 343 int security_file_permission(struct file *file, int mask); 344 int security_file_alloc(struct file *file); 345 void security_file_free(struct file *file); 346 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 347 int security_mmap_file(struct file *file, unsigned long prot, 348 unsigned long flags); 349 int security_mmap_addr(unsigned long addr); 350 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 351 unsigned long prot); 352 int security_file_lock(struct file *file, unsigned int cmd); 353 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 354 void security_file_set_fowner(struct file *file); 355 int security_file_send_sigiotask(struct task_struct *tsk, 356 struct fown_struct *fown, int sig); 357 int security_file_receive(struct file *file); 358 int security_file_open(struct file *file); 359 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 360 void security_task_free(struct task_struct *task); 361 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 362 void security_cred_free(struct cred *cred); 363 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 364 void security_transfer_creds(struct cred *new, const struct cred *old); 365 void security_cred_getsecid(const struct cred *c, u32 *secid); 366 int security_kernel_act_as(struct cred *new, u32 secid); 367 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 368 int security_kernel_module_request(char *kmod_name); 369 int security_kernel_load_data(enum kernel_load_data_id id); 370 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 371 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 372 enum kernel_read_file_id id); 373 int security_task_fix_setuid(struct cred *new, const struct cred *old, 374 int flags); 375 int security_task_setpgid(struct task_struct *p, pid_t pgid); 376 int security_task_getpgid(struct task_struct *p); 377 int security_task_getsid(struct task_struct *p); 378 void security_task_getsecid(struct task_struct *p, u32 *secid); 379 int security_task_setnice(struct task_struct *p, int nice); 380 int security_task_setioprio(struct task_struct *p, int ioprio); 381 int security_task_getioprio(struct task_struct *p); 382 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 383 unsigned int flags); 384 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 385 struct rlimit *new_rlim); 386 int security_task_setscheduler(struct task_struct *p); 387 int security_task_getscheduler(struct task_struct *p); 388 int security_task_movememory(struct task_struct *p); 389 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 390 int sig, const struct cred *cred); 391 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 392 unsigned long arg4, unsigned long arg5); 393 void security_task_to_inode(struct task_struct *p, struct inode *inode); 394 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 395 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 396 int security_msg_msg_alloc(struct msg_msg *msg); 397 void security_msg_msg_free(struct msg_msg *msg); 398 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 399 void security_msg_queue_free(struct kern_ipc_perm *msq); 400 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 401 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 402 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 403 struct msg_msg *msg, int msqflg); 404 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 405 struct task_struct *target, long type, int mode); 406 int security_shm_alloc(struct kern_ipc_perm *shp); 407 void security_shm_free(struct kern_ipc_perm *shp); 408 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 409 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 410 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 411 int security_sem_alloc(struct kern_ipc_perm *sma); 412 void security_sem_free(struct kern_ipc_perm *sma); 413 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 414 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 415 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 416 unsigned nsops, int alter); 417 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 418 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 419 char **value); 420 int security_setprocattr(const char *lsm, const char *name, void *value, 421 size_t size); 422 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 423 int security_ismaclabel(const char *name); 424 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 425 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 426 void security_release_secctx(char *secdata, u32 seclen); 427 428 void security_inode_invalidate_secctx(struct inode *inode); 429 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 430 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 431 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 432 int security_locked_down(enum lockdown_reason what); 433 #else /* CONFIG_SECURITY */ 434 435 static inline int call_lsm_notifier(enum lsm_event event, void *data) 436 { 437 return 0; 438 } 439 440 static inline int register_lsm_notifier(struct notifier_block *nb) 441 { 442 return 0; 443 } 444 445 static inline int unregister_lsm_notifier(struct notifier_block *nb) 446 { 447 return 0; 448 } 449 450 static inline void security_free_mnt_opts(void **mnt_opts) 451 { 452 } 453 454 /* 455 * This is the default capabilities functionality. Most of these functions 456 * are just stubbed out, but a few must call the proper capable code. 457 */ 458 459 static inline int security_init(void) 460 { 461 return 0; 462 } 463 464 static inline int early_security_init(void) 465 { 466 return 0; 467 } 468 469 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 470 { 471 return 0; 472 } 473 474 static inline int security_binder_transaction(struct task_struct *from, 475 struct task_struct *to) 476 { 477 return 0; 478 } 479 480 static inline int security_binder_transfer_binder(struct task_struct *from, 481 struct task_struct *to) 482 { 483 return 0; 484 } 485 486 static inline int security_binder_transfer_file(struct task_struct *from, 487 struct task_struct *to, 488 struct file *file) 489 { 490 return 0; 491 } 492 493 static inline int security_ptrace_access_check(struct task_struct *child, 494 unsigned int mode) 495 { 496 return cap_ptrace_access_check(child, mode); 497 } 498 499 static inline int security_ptrace_traceme(struct task_struct *parent) 500 { 501 return cap_ptrace_traceme(parent); 502 } 503 504 static inline int security_capget(struct task_struct *target, 505 kernel_cap_t *effective, 506 kernel_cap_t *inheritable, 507 kernel_cap_t *permitted) 508 { 509 return cap_capget(target, effective, inheritable, permitted); 510 } 511 512 static inline int security_capset(struct cred *new, 513 const struct cred *old, 514 const kernel_cap_t *effective, 515 const kernel_cap_t *inheritable, 516 const kernel_cap_t *permitted) 517 { 518 return cap_capset(new, old, effective, inheritable, permitted); 519 } 520 521 static inline int security_capable(const struct cred *cred, 522 struct user_namespace *ns, 523 int cap, 524 unsigned int opts) 525 { 526 return cap_capable(cred, ns, cap, opts); 527 } 528 529 static inline int security_quotactl(int cmds, int type, int id, 530 struct super_block *sb) 531 { 532 return 0; 533 } 534 535 static inline int security_quota_on(struct dentry *dentry) 536 { 537 return 0; 538 } 539 540 static inline int security_syslog(int type) 541 { 542 return 0; 543 } 544 545 static inline int security_settime64(const struct timespec64 *ts, 546 const struct timezone *tz) 547 { 548 return cap_settime(ts, tz); 549 } 550 551 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 552 { 553 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 554 } 555 556 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 557 { 558 return cap_bprm_set_creds(bprm); 559 } 560 561 static inline int security_bprm_check(struct linux_binprm *bprm) 562 { 563 return 0; 564 } 565 566 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 567 { 568 } 569 570 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 571 { 572 } 573 574 static inline int security_fs_context_dup(struct fs_context *fc, 575 struct fs_context *src_fc) 576 { 577 return 0; 578 } 579 static inline int security_fs_context_parse_param(struct fs_context *fc, 580 struct fs_parameter *param) 581 { 582 return -ENOPARAM; 583 } 584 585 static inline int security_sb_alloc(struct super_block *sb) 586 { 587 return 0; 588 } 589 590 static inline void security_sb_free(struct super_block *sb) 591 { } 592 593 static inline int security_sb_eat_lsm_opts(char *options, 594 void **mnt_opts) 595 { 596 return 0; 597 } 598 599 static inline int security_sb_remount(struct super_block *sb, 600 void *mnt_opts) 601 { 602 return 0; 603 } 604 605 static inline int security_sb_kern_mount(struct super_block *sb) 606 { 607 return 0; 608 } 609 610 static inline int security_sb_show_options(struct seq_file *m, 611 struct super_block *sb) 612 { 613 return 0; 614 } 615 616 static inline int security_sb_statfs(struct dentry *dentry) 617 { 618 return 0; 619 } 620 621 static inline int security_sb_mount(const char *dev_name, const struct path *path, 622 const char *type, unsigned long flags, 623 void *data) 624 { 625 return 0; 626 } 627 628 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 629 { 630 return 0; 631 } 632 633 static inline int security_sb_pivotroot(const struct path *old_path, 634 const struct path *new_path) 635 { 636 return 0; 637 } 638 639 static inline int security_sb_set_mnt_opts(struct super_block *sb, 640 void *mnt_opts, 641 unsigned long kern_flags, 642 unsigned long *set_kern_flags) 643 { 644 return 0; 645 } 646 647 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 648 struct super_block *newsb, 649 unsigned long kern_flags, 650 unsigned long *set_kern_flags) 651 { 652 return 0; 653 } 654 655 static inline int security_add_mnt_opt(const char *option, const char *val, 656 int len, void **mnt_opts) 657 { 658 return 0; 659 } 660 661 static inline int security_move_mount(const struct path *from_path, 662 const struct path *to_path) 663 { 664 return 0; 665 } 666 667 static inline int security_inode_alloc(struct inode *inode) 668 { 669 return 0; 670 } 671 672 static inline void security_inode_free(struct inode *inode) 673 { } 674 675 static inline int security_dentry_init_security(struct dentry *dentry, 676 int mode, 677 const struct qstr *name, 678 void **ctx, 679 u32 *ctxlen) 680 { 681 return -EOPNOTSUPP; 682 } 683 684 static inline int security_dentry_create_files_as(struct dentry *dentry, 685 int mode, struct qstr *name, 686 const struct cred *old, 687 struct cred *new) 688 { 689 return 0; 690 } 691 692 693 static inline int security_inode_init_security(struct inode *inode, 694 struct inode *dir, 695 const struct qstr *qstr, 696 const initxattrs xattrs, 697 void *fs_data) 698 { 699 return 0; 700 } 701 702 static inline int security_old_inode_init_security(struct inode *inode, 703 struct inode *dir, 704 const struct qstr *qstr, 705 const char **name, 706 void **value, size_t *len) 707 { 708 return -EOPNOTSUPP; 709 } 710 711 static inline int security_inode_create(struct inode *dir, 712 struct dentry *dentry, 713 umode_t mode) 714 { 715 return 0; 716 } 717 718 static inline int security_inode_link(struct dentry *old_dentry, 719 struct inode *dir, 720 struct dentry *new_dentry) 721 { 722 return 0; 723 } 724 725 static inline int security_inode_unlink(struct inode *dir, 726 struct dentry *dentry) 727 { 728 return 0; 729 } 730 731 static inline int security_inode_symlink(struct inode *dir, 732 struct dentry *dentry, 733 const char *old_name) 734 { 735 return 0; 736 } 737 738 static inline int security_inode_mkdir(struct inode *dir, 739 struct dentry *dentry, 740 int mode) 741 { 742 return 0; 743 } 744 745 static inline int security_inode_rmdir(struct inode *dir, 746 struct dentry *dentry) 747 { 748 return 0; 749 } 750 751 static inline int security_inode_mknod(struct inode *dir, 752 struct dentry *dentry, 753 int mode, dev_t dev) 754 { 755 return 0; 756 } 757 758 static inline int security_inode_rename(struct inode *old_dir, 759 struct dentry *old_dentry, 760 struct inode *new_dir, 761 struct dentry *new_dentry, 762 unsigned int flags) 763 { 764 return 0; 765 } 766 767 static inline int security_inode_readlink(struct dentry *dentry) 768 { 769 return 0; 770 } 771 772 static inline int security_inode_follow_link(struct dentry *dentry, 773 struct inode *inode, 774 bool rcu) 775 { 776 return 0; 777 } 778 779 static inline int security_inode_permission(struct inode *inode, int mask) 780 { 781 return 0; 782 } 783 784 static inline int security_inode_setattr(struct dentry *dentry, 785 struct iattr *attr) 786 { 787 return 0; 788 } 789 790 static inline int security_inode_getattr(const struct path *path) 791 { 792 return 0; 793 } 794 795 static inline int security_inode_setxattr(struct dentry *dentry, 796 const char *name, const void *value, size_t size, int flags) 797 { 798 return cap_inode_setxattr(dentry, name, value, size, flags); 799 } 800 801 static inline void security_inode_post_setxattr(struct dentry *dentry, 802 const char *name, const void *value, size_t size, int flags) 803 { } 804 805 static inline int security_inode_getxattr(struct dentry *dentry, 806 const char *name) 807 { 808 return 0; 809 } 810 811 static inline int security_inode_listxattr(struct dentry *dentry) 812 { 813 return 0; 814 } 815 816 static inline int security_inode_removexattr(struct dentry *dentry, 817 const char *name) 818 { 819 return cap_inode_removexattr(dentry, name); 820 } 821 822 static inline int security_inode_need_killpriv(struct dentry *dentry) 823 { 824 return cap_inode_need_killpriv(dentry); 825 } 826 827 static inline int security_inode_killpriv(struct dentry *dentry) 828 { 829 return cap_inode_killpriv(dentry); 830 } 831 832 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 833 { 834 return -EOPNOTSUPP; 835 } 836 837 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 838 { 839 return -EOPNOTSUPP; 840 } 841 842 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 843 { 844 return 0; 845 } 846 847 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 848 { 849 *secid = 0; 850 } 851 852 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 853 { 854 return 0; 855 } 856 857 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 858 struct kernfs_node *kn) 859 { 860 return 0; 861 } 862 863 static inline int security_inode_copy_up_xattr(const char *name) 864 { 865 return -EOPNOTSUPP; 866 } 867 868 static inline int security_file_permission(struct file *file, int mask) 869 { 870 return 0; 871 } 872 873 static inline int security_file_alloc(struct file *file) 874 { 875 return 0; 876 } 877 878 static inline void security_file_free(struct file *file) 879 { } 880 881 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 882 unsigned long arg) 883 { 884 return 0; 885 } 886 887 static inline int security_mmap_file(struct file *file, unsigned long prot, 888 unsigned long flags) 889 { 890 return 0; 891 } 892 893 static inline int security_mmap_addr(unsigned long addr) 894 { 895 return cap_mmap_addr(addr); 896 } 897 898 static inline int security_file_mprotect(struct vm_area_struct *vma, 899 unsigned long reqprot, 900 unsigned long prot) 901 { 902 return 0; 903 } 904 905 static inline int security_file_lock(struct file *file, unsigned int cmd) 906 { 907 return 0; 908 } 909 910 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 911 unsigned long arg) 912 { 913 return 0; 914 } 915 916 static inline void security_file_set_fowner(struct file *file) 917 { 918 return; 919 } 920 921 static inline int security_file_send_sigiotask(struct task_struct *tsk, 922 struct fown_struct *fown, 923 int sig) 924 { 925 return 0; 926 } 927 928 static inline int security_file_receive(struct file *file) 929 { 930 return 0; 931 } 932 933 static inline int security_file_open(struct file *file) 934 { 935 return 0; 936 } 937 938 static inline int security_task_alloc(struct task_struct *task, 939 unsigned long clone_flags) 940 { 941 return 0; 942 } 943 944 static inline void security_task_free(struct task_struct *task) 945 { } 946 947 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 948 { 949 return 0; 950 } 951 952 static inline void security_cred_free(struct cred *cred) 953 { } 954 955 static inline int security_prepare_creds(struct cred *new, 956 const struct cred *old, 957 gfp_t gfp) 958 { 959 return 0; 960 } 961 962 static inline void security_transfer_creds(struct cred *new, 963 const struct cred *old) 964 { 965 } 966 967 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 968 { 969 return 0; 970 } 971 972 static inline int security_kernel_create_files_as(struct cred *cred, 973 struct inode *inode) 974 { 975 return 0; 976 } 977 978 static inline int security_kernel_module_request(char *kmod_name) 979 { 980 return 0; 981 } 982 983 static inline int security_kernel_load_data(enum kernel_load_data_id id) 984 { 985 return 0; 986 } 987 988 static inline int security_kernel_read_file(struct file *file, 989 enum kernel_read_file_id id) 990 { 991 return 0; 992 } 993 994 static inline int security_kernel_post_read_file(struct file *file, 995 char *buf, loff_t size, 996 enum kernel_read_file_id id) 997 { 998 return 0; 999 } 1000 1001 static inline int security_task_fix_setuid(struct cred *new, 1002 const struct cred *old, 1003 int flags) 1004 { 1005 return cap_task_fix_setuid(new, old, flags); 1006 } 1007 1008 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1009 { 1010 return 0; 1011 } 1012 1013 static inline int security_task_getpgid(struct task_struct *p) 1014 { 1015 return 0; 1016 } 1017 1018 static inline int security_task_getsid(struct task_struct *p) 1019 { 1020 return 0; 1021 } 1022 1023 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1024 { 1025 *secid = 0; 1026 } 1027 1028 static inline int security_task_setnice(struct task_struct *p, int nice) 1029 { 1030 return cap_task_setnice(p, nice); 1031 } 1032 1033 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1034 { 1035 return cap_task_setioprio(p, ioprio); 1036 } 1037 1038 static inline int security_task_getioprio(struct task_struct *p) 1039 { 1040 return 0; 1041 } 1042 1043 static inline int security_task_prlimit(const struct cred *cred, 1044 const struct cred *tcred, 1045 unsigned int flags) 1046 { 1047 return 0; 1048 } 1049 1050 static inline int security_task_setrlimit(struct task_struct *p, 1051 unsigned int resource, 1052 struct rlimit *new_rlim) 1053 { 1054 return 0; 1055 } 1056 1057 static inline int security_task_setscheduler(struct task_struct *p) 1058 { 1059 return cap_task_setscheduler(p); 1060 } 1061 1062 static inline int security_task_getscheduler(struct task_struct *p) 1063 { 1064 return 0; 1065 } 1066 1067 static inline int security_task_movememory(struct task_struct *p) 1068 { 1069 return 0; 1070 } 1071 1072 static inline int security_task_kill(struct task_struct *p, 1073 struct kernel_siginfo *info, int sig, 1074 const struct cred *cred) 1075 { 1076 return 0; 1077 } 1078 1079 static inline int security_task_prctl(int option, unsigned long arg2, 1080 unsigned long arg3, 1081 unsigned long arg4, 1082 unsigned long arg5) 1083 { 1084 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1085 } 1086 1087 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1088 { } 1089 1090 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1091 short flag) 1092 { 1093 return 0; 1094 } 1095 1096 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1097 { 1098 *secid = 0; 1099 } 1100 1101 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1102 { 1103 return 0; 1104 } 1105 1106 static inline void security_msg_msg_free(struct msg_msg *msg) 1107 { } 1108 1109 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1110 { 1111 return 0; 1112 } 1113 1114 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1115 { } 1116 1117 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1118 int msqflg) 1119 { 1120 return 0; 1121 } 1122 1123 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1124 { 1125 return 0; 1126 } 1127 1128 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1129 struct msg_msg *msg, int msqflg) 1130 { 1131 return 0; 1132 } 1133 1134 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1135 struct msg_msg *msg, 1136 struct task_struct *target, 1137 long type, int mode) 1138 { 1139 return 0; 1140 } 1141 1142 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1143 { 1144 return 0; 1145 } 1146 1147 static inline void security_shm_free(struct kern_ipc_perm *shp) 1148 { } 1149 1150 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1151 int shmflg) 1152 { 1153 return 0; 1154 } 1155 1156 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1157 { 1158 return 0; 1159 } 1160 1161 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1162 char __user *shmaddr, int shmflg) 1163 { 1164 return 0; 1165 } 1166 1167 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1168 { 1169 return 0; 1170 } 1171 1172 static inline void security_sem_free(struct kern_ipc_perm *sma) 1173 { } 1174 1175 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1176 { 1177 return 0; 1178 } 1179 1180 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1181 { 1182 return 0; 1183 } 1184 1185 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1186 struct sembuf *sops, unsigned nsops, 1187 int alter) 1188 { 1189 return 0; 1190 } 1191 1192 static inline void security_d_instantiate(struct dentry *dentry, 1193 struct inode *inode) 1194 { } 1195 1196 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1197 char *name, char **value) 1198 { 1199 return -EINVAL; 1200 } 1201 1202 static inline int security_setprocattr(const char *lsm, char *name, 1203 void *value, size_t size) 1204 { 1205 return -EINVAL; 1206 } 1207 1208 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1209 { 1210 return 0; 1211 } 1212 1213 static inline int security_ismaclabel(const char *name) 1214 { 1215 return 0; 1216 } 1217 1218 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1219 { 1220 return -EOPNOTSUPP; 1221 } 1222 1223 static inline int security_secctx_to_secid(const char *secdata, 1224 u32 seclen, 1225 u32 *secid) 1226 { 1227 return -EOPNOTSUPP; 1228 } 1229 1230 static inline void security_release_secctx(char *secdata, u32 seclen) 1231 { 1232 } 1233 1234 static inline void security_inode_invalidate_secctx(struct inode *inode) 1235 { 1236 } 1237 1238 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1239 { 1240 return -EOPNOTSUPP; 1241 } 1242 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1243 { 1244 return -EOPNOTSUPP; 1245 } 1246 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1247 { 1248 return -EOPNOTSUPP; 1249 } 1250 static inline int security_locked_down(enum lockdown_reason what) 1251 { 1252 return 0; 1253 } 1254 #endif /* CONFIG_SECURITY */ 1255 1256 #ifdef CONFIG_SECURITY_NETWORK 1257 1258 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1259 int security_unix_may_send(struct socket *sock, struct socket *other); 1260 int security_socket_create(int family, int type, int protocol, int kern); 1261 int security_socket_post_create(struct socket *sock, int family, 1262 int type, int protocol, int kern); 1263 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1264 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1265 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1266 int security_socket_listen(struct socket *sock, int backlog); 1267 int security_socket_accept(struct socket *sock, struct socket *newsock); 1268 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1269 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1270 int size, int flags); 1271 int security_socket_getsockname(struct socket *sock); 1272 int security_socket_getpeername(struct socket *sock); 1273 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1274 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1275 int security_socket_shutdown(struct socket *sock, int how); 1276 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1277 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1278 int __user *optlen, unsigned len); 1279 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1280 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1281 void security_sk_free(struct sock *sk); 1282 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1283 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1284 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1285 void security_sock_graft(struct sock*sk, struct socket *parent); 1286 int security_inet_conn_request(struct sock *sk, 1287 struct sk_buff *skb, struct request_sock *req); 1288 void security_inet_csk_clone(struct sock *newsk, 1289 const struct request_sock *req); 1290 void security_inet_conn_established(struct sock *sk, 1291 struct sk_buff *skb); 1292 int security_secmark_relabel_packet(u32 secid); 1293 void security_secmark_refcount_inc(void); 1294 void security_secmark_refcount_dec(void); 1295 int security_tun_dev_alloc_security(void **security); 1296 void security_tun_dev_free_security(void *security); 1297 int security_tun_dev_create(void); 1298 int security_tun_dev_attach_queue(void *security); 1299 int security_tun_dev_attach(struct sock *sk, void *security); 1300 int security_tun_dev_open(void *security); 1301 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1302 int security_sctp_bind_connect(struct sock *sk, int optname, 1303 struct sockaddr *address, int addrlen); 1304 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1305 struct sock *newsk); 1306 1307 #else /* CONFIG_SECURITY_NETWORK */ 1308 static inline int security_unix_stream_connect(struct sock *sock, 1309 struct sock *other, 1310 struct sock *newsk) 1311 { 1312 return 0; 1313 } 1314 1315 static inline int security_unix_may_send(struct socket *sock, 1316 struct socket *other) 1317 { 1318 return 0; 1319 } 1320 1321 static inline int security_socket_create(int family, int type, 1322 int protocol, int kern) 1323 { 1324 return 0; 1325 } 1326 1327 static inline int security_socket_post_create(struct socket *sock, 1328 int family, 1329 int type, 1330 int protocol, int kern) 1331 { 1332 return 0; 1333 } 1334 1335 static inline int security_socket_socketpair(struct socket *socka, 1336 struct socket *sockb) 1337 { 1338 return 0; 1339 } 1340 1341 static inline int security_socket_bind(struct socket *sock, 1342 struct sockaddr *address, 1343 int addrlen) 1344 { 1345 return 0; 1346 } 1347 1348 static inline int security_socket_connect(struct socket *sock, 1349 struct sockaddr *address, 1350 int addrlen) 1351 { 1352 return 0; 1353 } 1354 1355 static inline int security_socket_listen(struct socket *sock, int backlog) 1356 { 1357 return 0; 1358 } 1359 1360 static inline int security_socket_accept(struct socket *sock, 1361 struct socket *newsock) 1362 { 1363 return 0; 1364 } 1365 1366 static inline int security_socket_sendmsg(struct socket *sock, 1367 struct msghdr *msg, int size) 1368 { 1369 return 0; 1370 } 1371 1372 static inline int security_socket_recvmsg(struct socket *sock, 1373 struct msghdr *msg, int size, 1374 int flags) 1375 { 1376 return 0; 1377 } 1378 1379 static inline int security_socket_getsockname(struct socket *sock) 1380 { 1381 return 0; 1382 } 1383 1384 static inline int security_socket_getpeername(struct socket *sock) 1385 { 1386 return 0; 1387 } 1388 1389 static inline int security_socket_getsockopt(struct socket *sock, 1390 int level, int optname) 1391 { 1392 return 0; 1393 } 1394 1395 static inline int security_socket_setsockopt(struct socket *sock, 1396 int level, int optname) 1397 { 1398 return 0; 1399 } 1400 1401 static inline int security_socket_shutdown(struct socket *sock, int how) 1402 { 1403 return 0; 1404 } 1405 static inline int security_sock_rcv_skb(struct sock *sk, 1406 struct sk_buff *skb) 1407 { 1408 return 0; 1409 } 1410 1411 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1412 int __user *optlen, unsigned len) 1413 { 1414 return -ENOPROTOOPT; 1415 } 1416 1417 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1418 { 1419 return -ENOPROTOOPT; 1420 } 1421 1422 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1423 { 1424 return 0; 1425 } 1426 1427 static inline void security_sk_free(struct sock *sk) 1428 { 1429 } 1430 1431 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1432 { 1433 } 1434 1435 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1436 { 1437 } 1438 1439 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1440 { 1441 } 1442 1443 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1444 { 1445 } 1446 1447 static inline int security_inet_conn_request(struct sock *sk, 1448 struct sk_buff *skb, struct request_sock *req) 1449 { 1450 return 0; 1451 } 1452 1453 static inline void security_inet_csk_clone(struct sock *newsk, 1454 const struct request_sock *req) 1455 { 1456 } 1457 1458 static inline void security_inet_conn_established(struct sock *sk, 1459 struct sk_buff *skb) 1460 { 1461 } 1462 1463 static inline int security_secmark_relabel_packet(u32 secid) 1464 { 1465 return 0; 1466 } 1467 1468 static inline void security_secmark_refcount_inc(void) 1469 { 1470 } 1471 1472 static inline void security_secmark_refcount_dec(void) 1473 { 1474 } 1475 1476 static inline int security_tun_dev_alloc_security(void **security) 1477 { 1478 return 0; 1479 } 1480 1481 static inline void security_tun_dev_free_security(void *security) 1482 { 1483 } 1484 1485 static inline int security_tun_dev_create(void) 1486 { 1487 return 0; 1488 } 1489 1490 static inline int security_tun_dev_attach_queue(void *security) 1491 { 1492 return 0; 1493 } 1494 1495 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1496 { 1497 return 0; 1498 } 1499 1500 static inline int security_tun_dev_open(void *security) 1501 { 1502 return 0; 1503 } 1504 1505 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1506 struct sk_buff *skb) 1507 { 1508 return 0; 1509 } 1510 1511 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1512 struct sockaddr *address, 1513 int addrlen) 1514 { 1515 return 0; 1516 } 1517 1518 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1519 struct sock *sk, 1520 struct sock *newsk) 1521 { 1522 } 1523 #endif /* CONFIG_SECURITY_NETWORK */ 1524 1525 #ifdef CONFIG_SECURITY_INFINIBAND 1526 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1527 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1528 int security_ib_alloc_security(void **sec); 1529 void security_ib_free_security(void *sec); 1530 #else /* CONFIG_SECURITY_INFINIBAND */ 1531 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1532 { 1533 return 0; 1534 } 1535 1536 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1537 { 1538 return 0; 1539 } 1540 1541 static inline int security_ib_alloc_security(void **sec) 1542 { 1543 return 0; 1544 } 1545 1546 static inline void security_ib_free_security(void *sec) 1547 { 1548 } 1549 #endif /* CONFIG_SECURITY_INFINIBAND */ 1550 1551 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1552 1553 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1554 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1555 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1556 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1557 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1558 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1559 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1560 struct xfrm_sec_ctx *polsec, u32 secid); 1561 int security_xfrm_state_delete(struct xfrm_state *x); 1562 void security_xfrm_state_free(struct xfrm_state *x); 1563 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1564 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1565 struct xfrm_policy *xp, 1566 const struct flowi *fl); 1567 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1568 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1569 1570 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1571 1572 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1573 struct xfrm_user_sec_ctx *sec_ctx, 1574 gfp_t gfp) 1575 { 1576 return 0; 1577 } 1578 1579 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1580 { 1581 return 0; 1582 } 1583 1584 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1585 { 1586 } 1587 1588 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1589 { 1590 return 0; 1591 } 1592 1593 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1594 struct xfrm_user_sec_ctx *sec_ctx) 1595 { 1596 return 0; 1597 } 1598 1599 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1600 struct xfrm_sec_ctx *polsec, u32 secid) 1601 { 1602 return 0; 1603 } 1604 1605 static inline void security_xfrm_state_free(struct xfrm_state *x) 1606 { 1607 } 1608 1609 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1610 { 1611 return 0; 1612 } 1613 1614 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1615 { 1616 return 0; 1617 } 1618 1619 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1620 struct xfrm_policy *xp, const struct flowi *fl) 1621 { 1622 return 1; 1623 } 1624 1625 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1626 { 1627 return 0; 1628 } 1629 1630 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1631 { 1632 } 1633 1634 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1635 1636 #ifdef CONFIG_SECURITY_PATH 1637 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1638 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1639 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1640 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1641 unsigned int dev); 1642 int security_path_truncate(const struct path *path); 1643 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1644 const char *old_name); 1645 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1646 struct dentry *new_dentry); 1647 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1648 const struct path *new_dir, struct dentry *new_dentry, 1649 unsigned int flags); 1650 int security_path_chmod(const struct path *path, umode_t mode); 1651 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1652 int security_path_chroot(const struct path *path); 1653 #else /* CONFIG_SECURITY_PATH */ 1654 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1655 { 1656 return 0; 1657 } 1658 1659 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1660 umode_t mode) 1661 { 1662 return 0; 1663 } 1664 1665 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1666 { 1667 return 0; 1668 } 1669 1670 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1671 umode_t mode, unsigned int dev) 1672 { 1673 return 0; 1674 } 1675 1676 static inline int security_path_truncate(const struct path *path) 1677 { 1678 return 0; 1679 } 1680 1681 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1682 const char *old_name) 1683 { 1684 return 0; 1685 } 1686 1687 static inline int security_path_link(struct dentry *old_dentry, 1688 const struct path *new_dir, 1689 struct dentry *new_dentry) 1690 { 1691 return 0; 1692 } 1693 1694 static inline int security_path_rename(const struct path *old_dir, 1695 struct dentry *old_dentry, 1696 const struct path *new_dir, 1697 struct dentry *new_dentry, 1698 unsigned int flags) 1699 { 1700 return 0; 1701 } 1702 1703 static inline int security_path_chmod(const struct path *path, umode_t mode) 1704 { 1705 return 0; 1706 } 1707 1708 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1709 { 1710 return 0; 1711 } 1712 1713 static inline int security_path_chroot(const struct path *path) 1714 { 1715 return 0; 1716 } 1717 #endif /* CONFIG_SECURITY_PATH */ 1718 1719 #ifdef CONFIG_KEYS 1720 #ifdef CONFIG_SECURITY 1721 1722 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1723 void security_key_free(struct key *key); 1724 int security_key_permission(key_ref_t key_ref, 1725 const struct cred *cred, unsigned perm); 1726 int security_key_getsecurity(struct key *key, char **_buffer); 1727 1728 #else 1729 1730 static inline int security_key_alloc(struct key *key, 1731 const struct cred *cred, 1732 unsigned long flags) 1733 { 1734 return 0; 1735 } 1736 1737 static inline void security_key_free(struct key *key) 1738 { 1739 } 1740 1741 static inline int security_key_permission(key_ref_t key_ref, 1742 const struct cred *cred, 1743 unsigned perm) 1744 { 1745 return 0; 1746 } 1747 1748 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1749 { 1750 *_buffer = NULL; 1751 return 0; 1752 } 1753 1754 #endif 1755 #endif /* CONFIG_KEYS */ 1756 1757 #ifdef CONFIG_AUDIT 1758 #ifdef CONFIG_SECURITY 1759 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1760 int security_audit_rule_known(struct audit_krule *krule); 1761 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1762 void security_audit_rule_free(void *lsmrule); 1763 1764 #else 1765 1766 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1767 void **lsmrule) 1768 { 1769 return 0; 1770 } 1771 1772 static inline int security_audit_rule_known(struct audit_krule *krule) 1773 { 1774 return 0; 1775 } 1776 1777 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1778 void *lsmrule) 1779 { 1780 return 0; 1781 } 1782 1783 static inline void security_audit_rule_free(void *lsmrule) 1784 { } 1785 1786 #endif /* CONFIG_SECURITY */ 1787 #endif /* CONFIG_AUDIT */ 1788 1789 #ifdef CONFIG_SECURITYFS 1790 1791 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1792 struct dentry *parent, void *data, 1793 const struct file_operations *fops); 1794 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1795 struct dentry *securityfs_create_symlink(const char *name, 1796 struct dentry *parent, 1797 const char *target, 1798 const struct inode_operations *iops); 1799 extern void securityfs_remove(struct dentry *dentry); 1800 1801 #else /* CONFIG_SECURITYFS */ 1802 1803 static inline struct dentry *securityfs_create_dir(const char *name, 1804 struct dentry *parent) 1805 { 1806 return ERR_PTR(-ENODEV); 1807 } 1808 1809 static inline struct dentry *securityfs_create_file(const char *name, 1810 umode_t mode, 1811 struct dentry *parent, 1812 void *data, 1813 const struct file_operations *fops) 1814 { 1815 return ERR_PTR(-ENODEV); 1816 } 1817 1818 static inline struct dentry *securityfs_create_symlink(const char *name, 1819 struct dentry *parent, 1820 const char *target, 1821 const struct inode_operations *iops) 1822 { 1823 return ERR_PTR(-ENODEV); 1824 } 1825 1826 static inline void securityfs_remove(struct dentry *dentry) 1827 {} 1828 1829 #endif 1830 1831 #ifdef CONFIG_BPF_SYSCALL 1832 union bpf_attr; 1833 struct bpf_map; 1834 struct bpf_prog; 1835 struct bpf_prog_aux; 1836 #ifdef CONFIG_SECURITY 1837 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1838 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1839 extern int security_bpf_prog(struct bpf_prog *prog); 1840 extern int security_bpf_map_alloc(struct bpf_map *map); 1841 extern void security_bpf_map_free(struct bpf_map *map); 1842 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1843 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1844 #else 1845 static inline int security_bpf(int cmd, union bpf_attr *attr, 1846 unsigned int size) 1847 { 1848 return 0; 1849 } 1850 1851 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1852 { 1853 return 0; 1854 } 1855 1856 static inline int security_bpf_prog(struct bpf_prog *prog) 1857 { 1858 return 0; 1859 } 1860 1861 static inline int security_bpf_map_alloc(struct bpf_map *map) 1862 { 1863 return 0; 1864 } 1865 1866 static inline void security_bpf_map_free(struct bpf_map *map) 1867 { } 1868 1869 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1870 { 1871 return 0; 1872 } 1873 1874 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1875 { } 1876 #endif /* CONFIG_SECURITY */ 1877 #endif /* CONFIG_BPF_SYSCALL */ 1878 1879 #endif /* ! __LINUX_SECURITY_H */ 1880 1881