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_MSR, 113 LOCKDOWN_ACPI_TABLES, 114 LOCKDOWN_INTEGRITY_MAX, 115 LOCKDOWN_CONFIDENTIALITY_MAX, 116 }; 117 118 /* These functions are in security/commoncap.c */ 119 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 120 int cap, unsigned int opts); 121 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 122 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 123 extern int cap_ptrace_traceme(struct task_struct *parent); 124 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 125 extern int cap_capset(struct cred *new, const struct cred *old, 126 const kernel_cap_t *effective, 127 const kernel_cap_t *inheritable, 128 const kernel_cap_t *permitted); 129 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 130 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 131 const void *value, size_t size, int flags); 132 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 133 extern int cap_inode_need_killpriv(struct dentry *dentry); 134 extern int cap_inode_killpriv(struct dentry *dentry); 135 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 136 void **buffer, bool alloc); 137 extern int cap_mmap_addr(unsigned long addr); 138 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 139 unsigned long prot, unsigned long flags); 140 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 141 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 142 unsigned long arg4, unsigned long arg5); 143 extern int cap_task_setscheduler(struct task_struct *p); 144 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 145 extern int cap_task_setnice(struct task_struct *p, int nice); 146 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 147 148 struct msghdr; 149 struct sk_buff; 150 struct sock; 151 struct sockaddr; 152 struct socket; 153 struct flowi; 154 struct dst_entry; 155 struct xfrm_selector; 156 struct xfrm_policy; 157 struct xfrm_state; 158 struct xfrm_user_sec_ctx; 159 struct seq_file; 160 struct sctp_endpoint; 161 162 #ifdef CONFIG_MMU 163 extern unsigned long mmap_min_addr; 164 extern unsigned long dac_mmap_min_addr; 165 #else 166 #define mmap_min_addr 0UL 167 #define dac_mmap_min_addr 0UL 168 #endif 169 170 /* 171 * Values used in the task_security_ops calls 172 */ 173 /* setuid or setgid, id0 == uid or gid */ 174 #define LSM_SETID_ID 1 175 176 /* setreuid or setregid, id0 == real, id1 == eff */ 177 #define LSM_SETID_RE 2 178 179 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 180 #define LSM_SETID_RES 4 181 182 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 183 #define LSM_SETID_FS 8 184 185 /* Flags for security_task_prlimit(). */ 186 #define LSM_PRLIMIT_READ 1 187 #define LSM_PRLIMIT_WRITE 2 188 189 /* forward declares to avoid warnings */ 190 struct sched_param; 191 struct request_sock; 192 193 /* bprm->unsafe reasons */ 194 #define LSM_UNSAFE_SHARE 1 195 #define LSM_UNSAFE_PTRACE 2 196 #define LSM_UNSAFE_NO_NEW_PRIVS 4 197 198 #ifdef CONFIG_MMU 199 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 200 void __user *buffer, size_t *lenp, loff_t *ppos); 201 #endif 202 203 /* security_inode_init_security callback function to write xattrs */ 204 typedef int (*initxattrs) (struct inode *inode, 205 const struct xattr *xattr_array, void *fs_data); 206 207 208 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 209 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 210 #define __data_id_stringify(dummy, str) #str, 211 212 enum kernel_load_data_id { 213 __kernel_read_file_id(__data_id_enumify) 214 }; 215 216 static const char * const kernel_load_data_str[] = { 217 __kernel_read_file_id(__data_id_stringify) 218 }; 219 220 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 221 { 222 if ((unsigned)id >= LOADING_MAX_ID) 223 return kernel_load_data_str[LOADING_UNKNOWN]; 224 225 return kernel_load_data_str[id]; 226 } 227 228 #ifdef CONFIG_SECURITY 229 230 int call_lsm_notifier(enum lsm_event event, void *data); 231 int register_lsm_notifier(struct notifier_block *nb); 232 int unregister_lsm_notifier(struct notifier_block *nb); 233 234 /* prototypes */ 235 extern int security_init(void); 236 extern int early_security_init(void); 237 238 /* Security operations */ 239 int security_binder_set_context_mgr(struct task_struct *mgr); 240 int security_binder_transaction(struct task_struct *from, 241 struct task_struct *to); 242 int security_binder_transfer_binder(struct task_struct *from, 243 struct task_struct *to); 244 int security_binder_transfer_file(struct task_struct *from, 245 struct task_struct *to, struct file *file); 246 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 247 int security_ptrace_traceme(struct task_struct *parent); 248 int security_capget(struct task_struct *target, 249 kernel_cap_t *effective, 250 kernel_cap_t *inheritable, 251 kernel_cap_t *permitted); 252 int security_capset(struct cred *new, const struct cred *old, 253 const kernel_cap_t *effective, 254 const kernel_cap_t *inheritable, 255 const kernel_cap_t *permitted); 256 int security_capable(const struct cred *cred, 257 struct user_namespace *ns, 258 int cap, 259 unsigned int opts); 260 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 261 int security_quota_on(struct dentry *dentry); 262 int security_syslog(int type); 263 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 264 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 265 int security_bprm_set_creds(struct linux_binprm *bprm); 266 int security_bprm_check(struct linux_binprm *bprm); 267 void security_bprm_committing_creds(struct linux_binprm *bprm); 268 void security_bprm_committed_creds(struct linux_binprm *bprm); 269 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 270 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 271 int security_sb_alloc(struct super_block *sb); 272 void security_sb_free(struct super_block *sb); 273 void security_free_mnt_opts(void **mnt_opts); 274 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 275 int security_sb_remount(struct super_block *sb, void *mnt_opts); 276 int security_sb_kern_mount(struct super_block *sb); 277 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 278 int security_sb_statfs(struct dentry *dentry); 279 int security_sb_mount(const char *dev_name, const struct path *path, 280 const char *type, unsigned long flags, void *data); 281 int security_sb_umount(struct vfsmount *mnt, int flags); 282 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 283 int security_sb_set_mnt_opts(struct super_block *sb, 284 void *mnt_opts, 285 unsigned long kern_flags, 286 unsigned long *set_kern_flags); 287 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 288 struct super_block *newsb, 289 unsigned long kern_flags, 290 unsigned long *set_kern_flags); 291 int security_add_mnt_opt(const char *option, const char *val, 292 int len, void **mnt_opts); 293 int security_move_mount(const struct path *from_path, const struct path *to_path); 294 int security_dentry_init_security(struct dentry *dentry, int mode, 295 const struct qstr *name, void **ctx, 296 u32 *ctxlen); 297 int security_dentry_create_files_as(struct dentry *dentry, int mode, 298 struct qstr *name, 299 const struct cred *old, 300 struct cred *new); 301 302 int security_inode_alloc(struct inode *inode); 303 void security_inode_free(struct inode *inode); 304 int security_inode_init_security(struct inode *inode, struct inode *dir, 305 const struct qstr *qstr, 306 initxattrs initxattrs, void *fs_data); 307 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 308 const struct qstr *qstr, const char **name, 309 void **value, size_t *len); 310 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 311 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 312 struct dentry *new_dentry); 313 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 314 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 315 const char *old_name); 316 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 317 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 318 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 319 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 320 struct inode *new_dir, struct dentry *new_dentry, 321 unsigned int flags); 322 int security_inode_readlink(struct dentry *dentry); 323 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 324 bool rcu); 325 int security_inode_permission(struct inode *inode, int mask); 326 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 327 int security_inode_getattr(const struct path *path); 328 int security_inode_setxattr(struct dentry *dentry, const char *name, 329 const void *value, size_t size, int flags); 330 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 331 const void *value, size_t size, int flags); 332 int security_inode_getxattr(struct dentry *dentry, const char *name); 333 int security_inode_listxattr(struct dentry *dentry); 334 int security_inode_removexattr(struct dentry *dentry, const char *name); 335 int security_inode_need_killpriv(struct dentry *dentry); 336 int security_inode_killpriv(struct dentry *dentry); 337 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 338 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 339 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 340 void security_inode_getsecid(struct inode *inode, u32 *secid); 341 int security_inode_copy_up(struct dentry *src, struct cred **new); 342 int security_inode_copy_up_xattr(const char *name); 343 int security_kernfs_init_security(struct kernfs_node *kn_dir, 344 struct kernfs_node *kn); 345 int security_file_permission(struct file *file, int mask); 346 int security_file_alloc(struct file *file); 347 void security_file_free(struct file *file); 348 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 349 int security_mmap_file(struct file *file, unsigned long prot, 350 unsigned long flags); 351 int security_mmap_addr(unsigned long addr); 352 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 353 unsigned long prot); 354 int security_file_lock(struct file *file, unsigned int cmd); 355 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 356 void security_file_set_fowner(struct file *file); 357 int security_file_send_sigiotask(struct task_struct *tsk, 358 struct fown_struct *fown, int sig); 359 int security_file_receive(struct file *file); 360 int security_file_open(struct file *file); 361 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 362 void security_task_free(struct task_struct *task); 363 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 364 void security_cred_free(struct cred *cred); 365 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 366 void security_transfer_creds(struct cred *new, const struct cred *old); 367 void security_cred_getsecid(const struct cred *c, u32 *secid); 368 int security_kernel_act_as(struct cred *new, u32 secid); 369 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 370 int security_kernel_module_request(char *kmod_name); 371 int security_kernel_load_data(enum kernel_load_data_id id); 372 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 373 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 374 enum kernel_read_file_id id); 375 int security_task_fix_setuid(struct cred *new, const struct cred *old, 376 int flags); 377 int security_task_setpgid(struct task_struct *p, pid_t pgid); 378 int security_task_getpgid(struct task_struct *p); 379 int security_task_getsid(struct task_struct *p); 380 void security_task_getsecid(struct task_struct *p, u32 *secid); 381 int security_task_setnice(struct task_struct *p, int nice); 382 int security_task_setioprio(struct task_struct *p, int ioprio); 383 int security_task_getioprio(struct task_struct *p); 384 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 385 unsigned int flags); 386 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 387 struct rlimit *new_rlim); 388 int security_task_setscheduler(struct task_struct *p); 389 int security_task_getscheduler(struct task_struct *p); 390 int security_task_movememory(struct task_struct *p); 391 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 392 int sig, const struct cred *cred); 393 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 394 unsigned long arg4, unsigned long arg5); 395 void security_task_to_inode(struct task_struct *p, struct inode *inode); 396 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 397 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 398 int security_msg_msg_alloc(struct msg_msg *msg); 399 void security_msg_msg_free(struct msg_msg *msg); 400 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 401 void security_msg_queue_free(struct kern_ipc_perm *msq); 402 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 403 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 404 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 405 struct msg_msg *msg, int msqflg); 406 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 407 struct task_struct *target, long type, int mode); 408 int security_shm_alloc(struct kern_ipc_perm *shp); 409 void security_shm_free(struct kern_ipc_perm *shp); 410 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 411 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 412 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 413 int security_sem_alloc(struct kern_ipc_perm *sma); 414 void security_sem_free(struct kern_ipc_perm *sma); 415 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 416 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 417 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 418 unsigned nsops, int alter); 419 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 420 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 421 char **value); 422 int security_setprocattr(const char *lsm, const char *name, void *value, 423 size_t size); 424 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 425 int security_ismaclabel(const char *name); 426 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 427 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 428 void security_release_secctx(char *secdata, u32 seclen); 429 430 void security_inode_invalidate_secctx(struct inode *inode); 431 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 432 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 433 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 434 int security_locked_down(enum lockdown_reason what); 435 #else /* CONFIG_SECURITY */ 436 437 static inline int call_lsm_notifier(enum lsm_event event, void *data) 438 { 439 return 0; 440 } 441 442 static inline int register_lsm_notifier(struct notifier_block *nb) 443 { 444 return 0; 445 } 446 447 static inline int unregister_lsm_notifier(struct notifier_block *nb) 448 { 449 return 0; 450 } 451 452 static inline void security_free_mnt_opts(void **mnt_opts) 453 { 454 } 455 456 /* 457 * This is the default capabilities functionality. Most of these functions 458 * are just stubbed out, but a few must call the proper capable code. 459 */ 460 461 static inline int security_init(void) 462 { 463 return 0; 464 } 465 466 static inline int early_security_init(void) 467 { 468 return 0; 469 } 470 471 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 472 { 473 return 0; 474 } 475 476 static inline int security_binder_transaction(struct task_struct *from, 477 struct task_struct *to) 478 { 479 return 0; 480 } 481 482 static inline int security_binder_transfer_binder(struct task_struct *from, 483 struct task_struct *to) 484 { 485 return 0; 486 } 487 488 static inline int security_binder_transfer_file(struct task_struct *from, 489 struct task_struct *to, 490 struct file *file) 491 { 492 return 0; 493 } 494 495 static inline int security_ptrace_access_check(struct task_struct *child, 496 unsigned int mode) 497 { 498 return cap_ptrace_access_check(child, mode); 499 } 500 501 static inline int security_ptrace_traceme(struct task_struct *parent) 502 { 503 return cap_ptrace_traceme(parent); 504 } 505 506 static inline int security_capget(struct task_struct *target, 507 kernel_cap_t *effective, 508 kernel_cap_t *inheritable, 509 kernel_cap_t *permitted) 510 { 511 return cap_capget(target, effective, inheritable, permitted); 512 } 513 514 static inline int security_capset(struct cred *new, 515 const struct cred *old, 516 const kernel_cap_t *effective, 517 const kernel_cap_t *inheritable, 518 const kernel_cap_t *permitted) 519 { 520 return cap_capset(new, old, effective, inheritable, permitted); 521 } 522 523 static inline int security_capable(const struct cred *cred, 524 struct user_namespace *ns, 525 int cap, 526 unsigned int opts) 527 { 528 return cap_capable(cred, ns, cap, opts); 529 } 530 531 static inline int security_quotactl(int cmds, int type, int id, 532 struct super_block *sb) 533 { 534 return 0; 535 } 536 537 static inline int security_quota_on(struct dentry *dentry) 538 { 539 return 0; 540 } 541 542 static inline int security_syslog(int type) 543 { 544 return 0; 545 } 546 547 static inline int security_settime64(const struct timespec64 *ts, 548 const struct timezone *tz) 549 { 550 return cap_settime(ts, tz); 551 } 552 553 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 554 { 555 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 556 } 557 558 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 559 { 560 return cap_bprm_set_creds(bprm); 561 } 562 563 static inline int security_bprm_check(struct linux_binprm *bprm) 564 { 565 return 0; 566 } 567 568 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 569 { 570 } 571 572 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 573 { 574 } 575 576 static inline int security_fs_context_dup(struct fs_context *fc, 577 struct fs_context *src_fc) 578 { 579 return 0; 580 } 581 static inline int security_fs_context_parse_param(struct fs_context *fc, 582 struct fs_parameter *param) 583 { 584 return -ENOPARAM; 585 } 586 587 static inline int security_sb_alloc(struct super_block *sb) 588 { 589 return 0; 590 } 591 592 static inline void security_sb_free(struct super_block *sb) 593 { } 594 595 static inline int security_sb_eat_lsm_opts(char *options, 596 void **mnt_opts) 597 { 598 return 0; 599 } 600 601 static inline int security_sb_remount(struct super_block *sb, 602 void *mnt_opts) 603 { 604 return 0; 605 } 606 607 static inline int security_sb_kern_mount(struct super_block *sb) 608 { 609 return 0; 610 } 611 612 static inline int security_sb_show_options(struct seq_file *m, 613 struct super_block *sb) 614 { 615 return 0; 616 } 617 618 static inline int security_sb_statfs(struct dentry *dentry) 619 { 620 return 0; 621 } 622 623 static inline int security_sb_mount(const char *dev_name, const struct path *path, 624 const char *type, unsigned long flags, 625 void *data) 626 { 627 return 0; 628 } 629 630 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 631 { 632 return 0; 633 } 634 635 static inline int security_sb_pivotroot(const struct path *old_path, 636 const struct path *new_path) 637 { 638 return 0; 639 } 640 641 static inline int security_sb_set_mnt_opts(struct super_block *sb, 642 void *mnt_opts, 643 unsigned long kern_flags, 644 unsigned long *set_kern_flags) 645 { 646 return 0; 647 } 648 649 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 650 struct super_block *newsb, 651 unsigned long kern_flags, 652 unsigned long *set_kern_flags) 653 { 654 return 0; 655 } 656 657 static inline int security_add_mnt_opt(const char *option, const char *val, 658 int len, void **mnt_opts) 659 { 660 return 0; 661 } 662 663 static inline int security_move_mount(const struct path *from_path, 664 const struct path *to_path) 665 { 666 return 0; 667 } 668 669 static inline int security_inode_alloc(struct inode *inode) 670 { 671 return 0; 672 } 673 674 static inline void security_inode_free(struct inode *inode) 675 { } 676 677 static inline int security_dentry_init_security(struct dentry *dentry, 678 int mode, 679 const struct qstr *name, 680 void **ctx, 681 u32 *ctxlen) 682 { 683 return -EOPNOTSUPP; 684 } 685 686 static inline int security_dentry_create_files_as(struct dentry *dentry, 687 int mode, struct qstr *name, 688 const struct cred *old, 689 struct cred *new) 690 { 691 return 0; 692 } 693 694 695 static inline int security_inode_init_security(struct inode *inode, 696 struct inode *dir, 697 const struct qstr *qstr, 698 const initxattrs xattrs, 699 void *fs_data) 700 { 701 return 0; 702 } 703 704 static inline int security_old_inode_init_security(struct inode *inode, 705 struct inode *dir, 706 const struct qstr *qstr, 707 const char **name, 708 void **value, size_t *len) 709 { 710 return -EOPNOTSUPP; 711 } 712 713 static inline int security_inode_create(struct inode *dir, 714 struct dentry *dentry, 715 umode_t mode) 716 { 717 return 0; 718 } 719 720 static inline int security_inode_link(struct dentry *old_dentry, 721 struct inode *dir, 722 struct dentry *new_dentry) 723 { 724 return 0; 725 } 726 727 static inline int security_inode_unlink(struct inode *dir, 728 struct dentry *dentry) 729 { 730 return 0; 731 } 732 733 static inline int security_inode_symlink(struct inode *dir, 734 struct dentry *dentry, 735 const char *old_name) 736 { 737 return 0; 738 } 739 740 static inline int security_inode_mkdir(struct inode *dir, 741 struct dentry *dentry, 742 int mode) 743 { 744 return 0; 745 } 746 747 static inline int security_inode_rmdir(struct inode *dir, 748 struct dentry *dentry) 749 { 750 return 0; 751 } 752 753 static inline int security_inode_mknod(struct inode *dir, 754 struct dentry *dentry, 755 int mode, dev_t dev) 756 { 757 return 0; 758 } 759 760 static inline int security_inode_rename(struct inode *old_dir, 761 struct dentry *old_dentry, 762 struct inode *new_dir, 763 struct dentry *new_dentry, 764 unsigned int flags) 765 { 766 return 0; 767 } 768 769 static inline int security_inode_readlink(struct dentry *dentry) 770 { 771 return 0; 772 } 773 774 static inline int security_inode_follow_link(struct dentry *dentry, 775 struct inode *inode, 776 bool rcu) 777 { 778 return 0; 779 } 780 781 static inline int security_inode_permission(struct inode *inode, int mask) 782 { 783 return 0; 784 } 785 786 static inline int security_inode_setattr(struct dentry *dentry, 787 struct iattr *attr) 788 { 789 return 0; 790 } 791 792 static inline int security_inode_getattr(const struct path *path) 793 { 794 return 0; 795 } 796 797 static inline int security_inode_setxattr(struct dentry *dentry, 798 const char *name, const void *value, size_t size, int flags) 799 { 800 return cap_inode_setxattr(dentry, name, value, size, flags); 801 } 802 803 static inline void security_inode_post_setxattr(struct dentry *dentry, 804 const char *name, const void *value, size_t size, int flags) 805 { } 806 807 static inline int security_inode_getxattr(struct dentry *dentry, 808 const char *name) 809 { 810 return 0; 811 } 812 813 static inline int security_inode_listxattr(struct dentry *dentry) 814 { 815 return 0; 816 } 817 818 static inline int security_inode_removexattr(struct dentry *dentry, 819 const char *name) 820 { 821 return cap_inode_removexattr(dentry, name); 822 } 823 824 static inline int security_inode_need_killpriv(struct dentry *dentry) 825 { 826 return cap_inode_need_killpriv(dentry); 827 } 828 829 static inline int security_inode_killpriv(struct dentry *dentry) 830 { 831 return cap_inode_killpriv(dentry); 832 } 833 834 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 835 { 836 return -EOPNOTSUPP; 837 } 838 839 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 840 { 841 return -EOPNOTSUPP; 842 } 843 844 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 845 { 846 return 0; 847 } 848 849 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 850 { 851 *secid = 0; 852 } 853 854 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 855 { 856 return 0; 857 } 858 859 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 860 struct kernfs_node *kn) 861 { 862 return 0; 863 } 864 865 static inline int security_inode_copy_up_xattr(const char *name) 866 { 867 return -EOPNOTSUPP; 868 } 869 870 static inline int security_file_permission(struct file *file, int mask) 871 { 872 return 0; 873 } 874 875 static inline int security_file_alloc(struct file *file) 876 { 877 return 0; 878 } 879 880 static inline void security_file_free(struct file *file) 881 { } 882 883 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 884 unsigned long arg) 885 { 886 return 0; 887 } 888 889 static inline int security_mmap_file(struct file *file, unsigned long prot, 890 unsigned long flags) 891 { 892 return 0; 893 } 894 895 static inline int security_mmap_addr(unsigned long addr) 896 { 897 return cap_mmap_addr(addr); 898 } 899 900 static inline int security_file_mprotect(struct vm_area_struct *vma, 901 unsigned long reqprot, 902 unsigned long prot) 903 { 904 return 0; 905 } 906 907 static inline int security_file_lock(struct file *file, unsigned int cmd) 908 { 909 return 0; 910 } 911 912 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 913 unsigned long arg) 914 { 915 return 0; 916 } 917 918 static inline void security_file_set_fowner(struct file *file) 919 { 920 return; 921 } 922 923 static inline int security_file_send_sigiotask(struct task_struct *tsk, 924 struct fown_struct *fown, 925 int sig) 926 { 927 return 0; 928 } 929 930 static inline int security_file_receive(struct file *file) 931 { 932 return 0; 933 } 934 935 static inline int security_file_open(struct file *file) 936 { 937 return 0; 938 } 939 940 static inline int security_task_alloc(struct task_struct *task, 941 unsigned long clone_flags) 942 { 943 return 0; 944 } 945 946 static inline void security_task_free(struct task_struct *task) 947 { } 948 949 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 950 { 951 return 0; 952 } 953 954 static inline void security_cred_free(struct cred *cred) 955 { } 956 957 static inline int security_prepare_creds(struct cred *new, 958 const struct cred *old, 959 gfp_t gfp) 960 { 961 return 0; 962 } 963 964 static inline void security_transfer_creds(struct cred *new, 965 const struct cred *old) 966 { 967 } 968 969 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 970 { 971 return 0; 972 } 973 974 static inline int security_kernel_create_files_as(struct cred *cred, 975 struct inode *inode) 976 { 977 return 0; 978 } 979 980 static inline int security_kernel_module_request(char *kmod_name) 981 { 982 return 0; 983 } 984 985 static inline int security_kernel_load_data(enum kernel_load_data_id id) 986 { 987 return 0; 988 } 989 990 static inline int security_kernel_read_file(struct file *file, 991 enum kernel_read_file_id id) 992 { 993 return 0; 994 } 995 996 static inline int security_kernel_post_read_file(struct file *file, 997 char *buf, loff_t size, 998 enum kernel_read_file_id id) 999 { 1000 return 0; 1001 } 1002 1003 static inline int security_task_fix_setuid(struct cred *new, 1004 const struct cred *old, 1005 int flags) 1006 { 1007 return cap_task_fix_setuid(new, old, flags); 1008 } 1009 1010 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1011 { 1012 return 0; 1013 } 1014 1015 static inline int security_task_getpgid(struct task_struct *p) 1016 { 1017 return 0; 1018 } 1019 1020 static inline int security_task_getsid(struct task_struct *p) 1021 { 1022 return 0; 1023 } 1024 1025 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1026 { 1027 *secid = 0; 1028 } 1029 1030 static inline int security_task_setnice(struct task_struct *p, int nice) 1031 { 1032 return cap_task_setnice(p, nice); 1033 } 1034 1035 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1036 { 1037 return cap_task_setioprio(p, ioprio); 1038 } 1039 1040 static inline int security_task_getioprio(struct task_struct *p) 1041 { 1042 return 0; 1043 } 1044 1045 static inline int security_task_prlimit(const struct cred *cred, 1046 const struct cred *tcred, 1047 unsigned int flags) 1048 { 1049 return 0; 1050 } 1051 1052 static inline int security_task_setrlimit(struct task_struct *p, 1053 unsigned int resource, 1054 struct rlimit *new_rlim) 1055 { 1056 return 0; 1057 } 1058 1059 static inline int security_task_setscheduler(struct task_struct *p) 1060 { 1061 return cap_task_setscheduler(p); 1062 } 1063 1064 static inline int security_task_getscheduler(struct task_struct *p) 1065 { 1066 return 0; 1067 } 1068 1069 static inline int security_task_movememory(struct task_struct *p) 1070 { 1071 return 0; 1072 } 1073 1074 static inline int security_task_kill(struct task_struct *p, 1075 struct kernel_siginfo *info, int sig, 1076 const struct cred *cred) 1077 { 1078 return 0; 1079 } 1080 1081 static inline int security_task_prctl(int option, unsigned long arg2, 1082 unsigned long arg3, 1083 unsigned long arg4, 1084 unsigned long arg5) 1085 { 1086 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1087 } 1088 1089 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1090 { } 1091 1092 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1093 short flag) 1094 { 1095 return 0; 1096 } 1097 1098 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1099 { 1100 *secid = 0; 1101 } 1102 1103 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1104 { 1105 return 0; 1106 } 1107 1108 static inline void security_msg_msg_free(struct msg_msg *msg) 1109 { } 1110 1111 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1112 { 1113 return 0; 1114 } 1115 1116 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1117 { } 1118 1119 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1120 int msqflg) 1121 { 1122 return 0; 1123 } 1124 1125 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1126 { 1127 return 0; 1128 } 1129 1130 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1131 struct msg_msg *msg, int msqflg) 1132 { 1133 return 0; 1134 } 1135 1136 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1137 struct msg_msg *msg, 1138 struct task_struct *target, 1139 long type, int mode) 1140 { 1141 return 0; 1142 } 1143 1144 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1145 { 1146 return 0; 1147 } 1148 1149 static inline void security_shm_free(struct kern_ipc_perm *shp) 1150 { } 1151 1152 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1153 int shmflg) 1154 { 1155 return 0; 1156 } 1157 1158 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1159 { 1160 return 0; 1161 } 1162 1163 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1164 char __user *shmaddr, int shmflg) 1165 { 1166 return 0; 1167 } 1168 1169 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1170 { 1171 return 0; 1172 } 1173 1174 static inline void security_sem_free(struct kern_ipc_perm *sma) 1175 { } 1176 1177 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1178 { 1179 return 0; 1180 } 1181 1182 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1183 { 1184 return 0; 1185 } 1186 1187 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1188 struct sembuf *sops, unsigned nsops, 1189 int alter) 1190 { 1191 return 0; 1192 } 1193 1194 static inline void security_d_instantiate(struct dentry *dentry, 1195 struct inode *inode) 1196 { } 1197 1198 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1199 char *name, char **value) 1200 { 1201 return -EINVAL; 1202 } 1203 1204 static inline int security_setprocattr(const char *lsm, char *name, 1205 void *value, size_t size) 1206 { 1207 return -EINVAL; 1208 } 1209 1210 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1211 { 1212 return 0; 1213 } 1214 1215 static inline int security_ismaclabel(const char *name) 1216 { 1217 return 0; 1218 } 1219 1220 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1221 { 1222 return -EOPNOTSUPP; 1223 } 1224 1225 static inline int security_secctx_to_secid(const char *secdata, 1226 u32 seclen, 1227 u32 *secid) 1228 { 1229 return -EOPNOTSUPP; 1230 } 1231 1232 static inline void security_release_secctx(char *secdata, u32 seclen) 1233 { 1234 } 1235 1236 static inline void security_inode_invalidate_secctx(struct inode *inode) 1237 { 1238 } 1239 1240 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1241 { 1242 return -EOPNOTSUPP; 1243 } 1244 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1245 { 1246 return -EOPNOTSUPP; 1247 } 1248 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1249 { 1250 return -EOPNOTSUPP; 1251 } 1252 static inline int security_locked_down(enum lockdown_reason what) 1253 { 1254 return 0; 1255 } 1256 #endif /* CONFIG_SECURITY */ 1257 1258 #ifdef CONFIG_SECURITY_NETWORK 1259 1260 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1261 int security_unix_may_send(struct socket *sock, struct socket *other); 1262 int security_socket_create(int family, int type, int protocol, int kern); 1263 int security_socket_post_create(struct socket *sock, int family, 1264 int type, int protocol, int kern); 1265 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1266 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1267 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1268 int security_socket_listen(struct socket *sock, int backlog); 1269 int security_socket_accept(struct socket *sock, struct socket *newsock); 1270 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1271 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1272 int size, int flags); 1273 int security_socket_getsockname(struct socket *sock); 1274 int security_socket_getpeername(struct socket *sock); 1275 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1276 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1277 int security_socket_shutdown(struct socket *sock, int how); 1278 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1279 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1280 int __user *optlen, unsigned len); 1281 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1282 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1283 void security_sk_free(struct sock *sk); 1284 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1285 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1286 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1287 void security_sock_graft(struct sock*sk, struct socket *parent); 1288 int security_inet_conn_request(struct sock *sk, 1289 struct sk_buff *skb, struct request_sock *req); 1290 void security_inet_csk_clone(struct sock *newsk, 1291 const struct request_sock *req); 1292 void security_inet_conn_established(struct sock *sk, 1293 struct sk_buff *skb); 1294 int security_secmark_relabel_packet(u32 secid); 1295 void security_secmark_refcount_inc(void); 1296 void security_secmark_refcount_dec(void); 1297 int security_tun_dev_alloc_security(void **security); 1298 void security_tun_dev_free_security(void *security); 1299 int security_tun_dev_create(void); 1300 int security_tun_dev_attach_queue(void *security); 1301 int security_tun_dev_attach(struct sock *sk, void *security); 1302 int security_tun_dev_open(void *security); 1303 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1304 int security_sctp_bind_connect(struct sock *sk, int optname, 1305 struct sockaddr *address, int addrlen); 1306 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1307 struct sock *newsk); 1308 1309 #else /* CONFIG_SECURITY_NETWORK */ 1310 static inline int security_unix_stream_connect(struct sock *sock, 1311 struct sock *other, 1312 struct sock *newsk) 1313 { 1314 return 0; 1315 } 1316 1317 static inline int security_unix_may_send(struct socket *sock, 1318 struct socket *other) 1319 { 1320 return 0; 1321 } 1322 1323 static inline int security_socket_create(int family, int type, 1324 int protocol, int kern) 1325 { 1326 return 0; 1327 } 1328 1329 static inline int security_socket_post_create(struct socket *sock, 1330 int family, 1331 int type, 1332 int protocol, int kern) 1333 { 1334 return 0; 1335 } 1336 1337 static inline int security_socket_socketpair(struct socket *socka, 1338 struct socket *sockb) 1339 { 1340 return 0; 1341 } 1342 1343 static inline int security_socket_bind(struct socket *sock, 1344 struct sockaddr *address, 1345 int addrlen) 1346 { 1347 return 0; 1348 } 1349 1350 static inline int security_socket_connect(struct socket *sock, 1351 struct sockaddr *address, 1352 int addrlen) 1353 { 1354 return 0; 1355 } 1356 1357 static inline int security_socket_listen(struct socket *sock, int backlog) 1358 { 1359 return 0; 1360 } 1361 1362 static inline int security_socket_accept(struct socket *sock, 1363 struct socket *newsock) 1364 { 1365 return 0; 1366 } 1367 1368 static inline int security_socket_sendmsg(struct socket *sock, 1369 struct msghdr *msg, int size) 1370 { 1371 return 0; 1372 } 1373 1374 static inline int security_socket_recvmsg(struct socket *sock, 1375 struct msghdr *msg, int size, 1376 int flags) 1377 { 1378 return 0; 1379 } 1380 1381 static inline int security_socket_getsockname(struct socket *sock) 1382 { 1383 return 0; 1384 } 1385 1386 static inline int security_socket_getpeername(struct socket *sock) 1387 { 1388 return 0; 1389 } 1390 1391 static inline int security_socket_getsockopt(struct socket *sock, 1392 int level, int optname) 1393 { 1394 return 0; 1395 } 1396 1397 static inline int security_socket_setsockopt(struct socket *sock, 1398 int level, int optname) 1399 { 1400 return 0; 1401 } 1402 1403 static inline int security_socket_shutdown(struct socket *sock, int how) 1404 { 1405 return 0; 1406 } 1407 static inline int security_sock_rcv_skb(struct sock *sk, 1408 struct sk_buff *skb) 1409 { 1410 return 0; 1411 } 1412 1413 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1414 int __user *optlen, unsigned len) 1415 { 1416 return -ENOPROTOOPT; 1417 } 1418 1419 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1420 { 1421 return -ENOPROTOOPT; 1422 } 1423 1424 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1425 { 1426 return 0; 1427 } 1428 1429 static inline void security_sk_free(struct sock *sk) 1430 { 1431 } 1432 1433 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1434 { 1435 } 1436 1437 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1438 { 1439 } 1440 1441 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1442 { 1443 } 1444 1445 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1446 { 1447 } 1448 1449 static inline int security_inet_conn_request(struct sock *sk, 1450 struct sk_buff *skb, struct request_sock *req) 1451 { 1452 return 0; 1453 } 1454 1455 static inline void security_inet_csk_clone(struct sock *newsk, 1456 const struct request_sock *req) 1457 { 1458 } 1459 1460 static inline void security_inet_conn_established(struct sock *sk, 1461 struct sk_buff *skb) 1462 { 1463 } 1464 1465 static inline int security_secmark_relabel_packet(u32 secid) 1466 { 1467 return 0; 1468 } 1469 1470 static inline void security_secmark_refcount_inc(void) 1471 { 1472 } 1473 1474 static inline void security_secmark_refcount_dec(void) 1475 { 1476 } 1477 1478 static inline int security_tun_dev_alloc_security(void **security) 1479 { 1480 return 0; 1481 } 1482 1483 static inline void security_tun_dev_free_security(void *security) 1484 { 1485 } 1486 1487 static inline int security_tun_dev_create(void) 1488 { 1489 return 0; 1490 } 1491 1492 static inline int security_tun_dev_attach_queue(void *security) 1493 { 1494 return 0; 1495 } 1496 1497 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1498 { 1499 return 0; 1500 } 1501 1502 static inline int security_tun_dev_open(void *security) 1503 { 1504 return 0; 1505 } 1506 1507 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1508 struct sk_buff *skb) 1509 { 1510 return 0; 1511 } 1512 1513 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1514 struct sockaddr *address, 1515 int addrlen) 1516 { 1517 return 0; 1518 } 1519 1520 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1521 struct sock *sk, 1522 struct sock *newsk) 1523 { 1524 } 1525 #endif /* CONFIG_SECURITY_NETWORK */ 1526 1527 #ifdef CONFIG_SECURITY_INFINIBAND 1528 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1529 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1530 int security_ib_alloc_security(void **sec); 1531 void security_ib_free_security(void *sec); 1532 #else /* CONFIG_SECURITY_INFINIBAND */ 1533 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1534 { 1535 return 0; 1536 } 1537 1538 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1539 { 1540 return 0; 1541 } 1542 1543 static inline int security_ib_alloc_security(void **sec) 1544 { 1545 return 0; 1546 } 1547 1548 static inline void security_ib_free_security(void *sec) 1549 { 1550 } 1551 #endif /* CONFIG_SECURITY_INFINIBAND */ 1552 1553 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1554 1555 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1556 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1557 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1558 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1559 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1560 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1561 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1562 struct xfrm_sec_ctx *polsec, u32 secid); 1563 int security_xfrm_state_delete(struct xfrm_state *x); 1564 void security_xfrm_state_free(struct xfrm_state *x); 1565 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1566 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1567 struct xfrm_policy *xp, 1568 const struct flowi *fl); 1569 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1570 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1571 1572 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1573 1574 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1575 struct xfrm_user_sec_ctx *sec_ctx, 1576 gfp_t gfp) 1577 { 1578 return 0; 1579 } 1580 1581 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1582 { 1583 return 0; 1584 } 1585 1586 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1587 { 1588 } 1589 1590 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1591 { 1592 return 0; 1593 } 1594 1595 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1596 struct xfrm_user_sec_ctx *sec_ctx) 1597 { 1598 return 0; 1599 } 1600 1601 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1602 struct xfrm_sec_ctx *polsec, u32 secid) 1603 { 1604 return 0; 1605 } 1606 1607 static inline void security_xfrm_state_free(struct xfrm_state *x) 1608 { 1609 } 1610 1611 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1612 { 1613 return 0; 1614 } 1615 1616 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1617 { 1618 return 0; 1619 } 1620 1621 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1622 struct xfrm_policy *xp, const struct flowi *fl) 1623 { 1624 return 1; 1625 } 1626 1627 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1628 { 1629 return 0; 1630 } 1631 1632 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1633 { 1634 } 1635 1636 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1637 1638 #ifdef CONFIG_SECURITY_PATH 1639 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1640 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1641 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1642 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1643 unsigned int dev); 1644 int security_path_truncate(const struct path *path); 1645 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1646 const char *old_name); 1647 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1648 struct dentry *new_dentry); 1649 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1650 const struct path *new_dir, struct dentry *new_dentry, 1651 unsigned int flags); 1652 int security_path_chmod(const struct path *path, umode_t mode); 1653 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1654 int security_path_chroot(const struct path *path); 1655 #else /* CONFIG_SECURITY_PATH */ 1656 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1657 { 1658 return 0; 1659 } 1660 1661 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1662 umode_t mode) 1663 { 1664 return 0; 1665 } 1666 1667 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1668 { 1669 return 0; 1670 } 1671 1672 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1673 umode_t mode, unsigned int dev) 1674 { 1675 return 0; 1676 } 1677 1678 static inline int security_path_truncate(const struct path *path) 1679 { 1680 return 0; 1681 } 1682 1683 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1684 const char *old_name) 1685 { 1686 return 0; 1687 } 1688 1689 static inline int security_path_link(struct dentry *old_dentry, 1690 const struct path *new_dir, 1691 struct dentry *new_dentry) 1692 { 1693 return 0; 1694 } 1695 1696 static inline int security_path_rename(const struct path *old_dir, 1697 struct dentry *old_dentry, 1698 const struct path *new_dir, 1699 struct dentry *new_dentry, 1700 unsigned int flags) 1701 { 1702 return 0; 1703 } 1704 1705 static inline int security_path_chmod(const struct path *path, umode_t mode) 1706 { 1707 return 0; 1708 } 1709 1710 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1711 { 1712 return 0; 1713 } 1714 1715 static inline int security_path_chroot(const struct path *path) 1716 { 1717 return 0; 1718 } 1719 #endif /* CONFIG_SECURITY_PATH */ 1720 1721 #ifdef CONFIG_KEYS 1722 #ifdef CONFIG_SECURITY 1723 1724 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1725 void security_key_free(struct key *key); 1726 int security_key_permission(key_ref_t key_ref, 1727 const struct cred *cred, unsigned perm); 1728 int security_key_getsecurity(struct key *key, char **_buffer); 1729 1730 #else 1731 1732 static inline int security_key_alloc(struct key *key, 1733 const struct cred *cred, 1734 unsigned long flags) 1735 { 1736 return 0; 1737 } 1738 1739 static inline void security_key_free(struct key *key) 1740 { 1741 } 1742 1743 static inline int security_key_permission(key_ref_t key_ref, 1744 const struct cred *cred, 1745 unsigned perm) 1746 { 1747 return 0; 1748 } 1749 1750 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1751 { 1752 *_buffer = NULL; 1753 return 0; 1754 } 1755 1756 #endif 1757 #endif /* CONFIG_KEYS */ 1758 1759 #ifdef CONFIG_AUDIT 1760 #ifdef CONFIG_SECURITY 1761 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1762 int security_audit_rule_known(struct audit_krule *krule); 1763 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1764 void security_audit_rule_free(void *lsmrule); 1765 1766 #else 1767 1768 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1769 void **lsmrule) 1770 { 1771 return 0; 1772 } 1773 1774 static inline int security_audit_rule_known(struct audit_krule *krule) 1775 { 1776 return 0; 1777 } 1778 1779 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1780 void *lsmrule) 1781 { 1782 return 0; 1783 } 1784 1785 static inline void security_audit_rule_free(void *lsmrule) 1786 { } 1787 1788 #endif /* CONFIG_SECURITY */ 1789 #endif /* CONFIG_AUDIT */ 1790 1791 #ifdef CONFIG_SECURITYFS 1792 1793 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1794 struct dentry *parent, void *data, 1795 const struct file_operations *fops); 1796 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1797 struct dentry *securityfs_create_symlink(const char *name, 1798 struct dentry *parent, 1799 const char *target, 1800 const struct inode_operations *iops); 1801 extern void securityfs_remove(struct dentry *dentry); 1802 1803 #else /* CONFIG_SECURITYFS */ 1804 1805 static inline struct dentry *securityfs_create_dir(const char *name, 1806 struct dentry *parent) 1807 { 1808 return ERR_PTR(-ENODEV); 1809 } 1810 1811 static inline struct dentry *securityfs_create_file(const char *name, 1812 umode_t mode, 1813 struct dentry *parent, 1814 void *data, 1815 const struct file_operations *fops) 1816 { 1817 return ERR_PTR(-ENODEV); 1818 } 1819 1820 static inline struct dentry *securityfs_create_symlink(const char *name, 1821 struct dentry *parent, 1822 const char *target, 1823 const struct inode_operations *iops) 1824 { 1825 return ERR_PTR(-ENODEV); 1826 } 1827 1828 static inline void securityfs_remove(struct dentry *dentry) 1829 {} 1830 1831 #endif 1832 1833 #ifdef CONFIG_BPF_SYSCALL 1834 union bpf_attr; 1835 struct bpf_map; 1836 struct bpf_prog; 1837 struct bpf_prog_aux; 1838 #ifdef CONFIG_SECURITY 1839 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1840 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1841 extern int security_bpf_prog(struct bpf_prog *prog); 1842 extern int security_bpf_map_alloc(struct bpf_map *map); 1843 extern void security_bpf_map_free(struct bpf_map *map); 1844 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1845 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1846 #else 1847 static inline int security_bpf(int cmd, union bpf_attr *attr, 1848 unsigned int size) 1849 { 1850 return 0; 1851 } 1852 1853 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1854 { 1855 return 0; 1856 } 1857 1858 static inline int security_bpf_prog(struct bpf_prog *prog) 1859 { 1860 return 0; 1861 } 1862 1863 static inline int security_bpf_map_alloc(struct bpf_map *map) 1864 { 1865 return 0; 1866 } 1867 1868 static inline void security_bpf_map_free(struct bpf_map *map) 1869 { } 1870 1871 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1872 { 1873 return 0; 1874 } 1875 1876 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1877 { } 1878 #endif /* CONFIG_SECURITY */ 1879 #endif /* CONFIG_BPF_SYSCALL */ 1880 1881 #endif /* ! __LINUX_SECURITY_H */ 1882 1883