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_PCMCIA_CIS, 115 LOCKDOWN_TIOCSSERIAL, 116 LOCKDOWN_MODULE_PARAMETERS, 117 LOCKDOWN_MMIOTRACE, 118 LOCKDOWN_INTEGRITY_MAX, 119 LOCKDOWN_CONFIDENTIALITY_MAX, 120 }; 121 122 /* These functions are in security/commoncap.c */ 123 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 124 int cap, unsigned int opts); 125 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 126 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 127 extern int cap_ptrace_traceme(struct task_struct *parent); 128 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 129 extern int cap_capset(struct cred *new, const struct cred *old, 130 const kernel_cap_t *effective, 131 const kernel_cap_t *inheritable, 132 const kernel_cap_t *permitted); 133 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 134 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 135 const void *value, size_t size, int flags); 136 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 137 extern int cap_inode_need_killpriv(struct dentry *dentry); 138 extern int cap_inode_killpriv(struct dentry *dentry); 139 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 140 void **buffer, bool alloc); 141 extern int cap_mmap_addr(unsigned long addr); 142 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 143 unsigned long prot, unsigned long flags); 144 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 145 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 146 unsigned long arg4, unsigned long arg5); 147 extern int cap_task_setscheduler(struct task_struct *p); 148 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 149 extern int cap_task_setnice(struct task_struct *p, int nice); 150 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 151 152 struct msghdr; 153 struct sk_buff; 154 struct sock; 155 struct sockaddr; 156 struct socket; 157 struct flowi; 158 struct dst_entry; 159 struct xfrm_selector; 160 struct xfrm_policy; 161 struct xfrm_state; 162 struct xfrm_user_sec_ctx; 163 struct seq_file; 164 struct sctp_endpoint; 165 166 #ifdef CONFIG_MMU 167 extern unsigned long mmap_min_addr; 168 extern unsigned long dac_mmap_min_addr; 169 #else 170 #define mmap_min_addr 0UL 171 #define dac_mmap_min_addr 0UL 172 #endif 173 174 /* 175 * Values used in the task_security_ops calls 176 */ 177 /* setuid or setgid, id0 == uid or gid */ 178 #define LSM_SETID_ID 1 179 180 /* setreuid or setregid, id0 == real, id1 == eff */ 181 #define LSM_SETID_RE 2 182 183 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 184 #define LSM_SETID_RES 4 185 186 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 187 #define LSM_SETID_FS 8 188 189 /* Flags for security_task_prlimit(). */ 190 #define LSM_PRLIMIT_READ 1 191 #define LSM_PRLIMIT_WRITE 2 192 193 /* forward declares to avoid warnings */ 194 struct sched_param; 195 struct request_sock; 196 197 /* bprm->unsafe reasons */ 198 #define LSM_UNSAFE_SHARE 1 199 #define LSM_UNSAFE_PTRACE 2 200 #define LSM_UNSAFE_NO_NEW_PRIVS 4 201 202 #ifdef CONFIG_MMU 203 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 204 void __user *buffer, size_t *lenp, loff_t *ppos); 205 #endif 206 207 /* security_inode_init_security callback function to write xattrs */ 208 typedef int (*initxattrs) (struct inode *inode, 209 const struct xattr *xattr_array, void *fs_data); 210 211 212 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 213 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 214 #define __data_id_stringify(dummy, str) #str, 215 216 enum kernel_load_data_id { 217 __kernel_read_file_id(__data_id_enumify) 218 }; 219 220 static const char * const kernel_load_data_str[] = { 221 __kernel_read_file_id(__data_id_stringify) 222 }; 223 224 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 225 { 226 if ((unsigned)id >= LOADING_MAX_ID) 227 return kernel_load_data_str[LOADING_UNKNOWN]; 228 229 return kernel_load_data_str[id]; 230 } 231 232 #ifdef CONFIG_SECURITY 233 234 int call_lsm_notifier(enum lsm_event event, void *data); 235 int register_lsm_notifier(struct notifier_block *nb); 236 int unregister_lsm_notifier(struct notifier_block *nb); 237 238 /* prototypes */ 239 extern int security_init(void); 240 extern int early_security_init(void); 241 242 /* Security operations */ 243 int security_binder_set_context_mgr(struct task_struct *mgr); 244 int security_binder_transaction(struct task_struct *from, 245 struct task_struct *to); 246 int security_binder_transfer_binder(struct task_struct *from, 247 struct task_struct *to); 248 int security_binder_transfer_file(struct task_struct *from, 249 struct task_struct *to, struct file *file); 250 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 251 int security_ptrace_traceme(struct task_struct *parent); 252 int security_capget(struct task_struct *target, 253 kernel_cap_t *effective, 254 kernel_cap_t *inheritable, 255 kernel_cap_t *permitted); 256 int security_capset(struct cred *new, const struct cred *old, 257 const kernel_cap_t *effective, 258 const kernel_cap_t *inheritable, 259 const kernel_cap_t *permitted); 260 int security_capable(const struct cred *cred, 261 struct user_namespace *ns, 262 int cap, 263 unsigned int opts); 264 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 265 int security_quota_on(struct dentry *dentry); 266 int security_syslog(int type); 267 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 268 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 269 int security_bprm_set_creds(struct linux_binprm *bprm); 270 int security_bprm_check(struct linux_binprm *bprm); 271 void security_bprm_committing_creds(struct linux_binprm *bprm); 272 void security_bprm_committed_creds(struct linux_binprm *bprm); 273 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 274 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 275 int security_sb_alloc(struct super_block *sb); 276 void security_sb_free(struct super_block *sb); 277 void security_free_mnt_opts(void **mnt_opts); 278 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 279 int security_sb_remount(struct super_block *sb, void *mnt_opts); 280 int security_sb_kern_mount(struct super_block *sb); 281 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 282 int security_sb_statfs(struct dentry *dentry); 283 int security_sb_mount(const char *dev_name, const struct path *path, 284 const char *type, unsigned long flags, void *data); 285 int security_sb_umount(struct vfsmount *mnt, int flags); 286 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 287 int security_sb_set_mnt_opts(struct super_block *sb, 288 void *mnt_opts, 289 unsigned long kern_flags, 290 unsigned long *set_kern_flags); 291 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 292 struct super_block *newsb, 293 unsigned long kern_flags, 294 unsigned long *set_kern_flags); 295 int security_add_mnt_opt(const char *option, const char *val, 296 int len, void **mnt_opts); 297 int security_move_mount(const struct path *from_path, const struct path *to_path); 298 int security_dentry_init_security(struct dentry *dentry, int mode, 299 const struct qstr *name, void **ctx, 300 u32 *ctxlen); 301 int security_dentry_create_files_as(struct dentry *dentry, int mode, 302 struct qstr *name, 303 const struct cred *old, 304 struct cred *new); 305 306 int security_inode_alloc(struct inode *inode); 307 void security_inode_free(struct inode *inode); 308 int security_inode_init_security(struct inode *inode, struct inode *dir, 309 const struct qstr *qstr, 310 initxattrs initxattrs, void *fs_data); 311 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 312 const struct qstr *qstr, const char **name, 313 void **value, size_t *len); 314 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 315 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 316 struct dentry *new_dentry); 317 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 318 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 319 const char *old_name); 320 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 321 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 322 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 323 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 324 struct inode *new_dir, struct dentry *new_dentry, 325 unsigned int flags); 326 int security_inode_readlink(struct dentry *dentry); 327 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 328 bool rcu); 329 int security_inode_permission(struct inode *inode, int mask); 330 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 331 int security_inode_getattr(const struct path *path); 332 int security_inode_setxattr(struct dentry *dentry, const char *name, 333 const void *value, size_t size, int flags); 334 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 335 const void *value, size_t size, int flags); 336 int security_inode_getxattr(struct dentry *dentry, const char *name); 337 int security_inode_listxattr(struct dentry *dentry); 338 int security_inode_removexattr(struct dentry *dentry, const char *name); 339 int security_inode_need_killpriv(struct dentry *dentry); 340 int security_inode_killpriv(struct dentry *dentry); 341 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 342 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 343 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 344 void security_inode_getsecid(struct inode *inode, u32 *secid); 345 int security_inode_copy_up(struct dentry *src, struct cred **new); 346 int security_inode_copy_up_xattr(const char *name); 347 int security_kernfs_init_security(struct kernfs_node *kn_dir, 348 struct kernfs_node *kn); 349 int security_file_permission(struct file *file, int mask); 350 int security_file_alloc(struct file *file); 351 void security_file_free(struct file *file); 352 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 353 int security_mmap_file(struct file *file, unsigned long prot, 354 unsigned long flags); 355 int security_mmap_addr(unsigned long addr); 356 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 357 unsigned long prot); 358 int security_file_lock(struct file *file, unsigned int cmd); 359 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 360 void security_file_set_fowner(struct file *file); 361 int security_file_send_sigiotask(struct task_struct *tsk, 362 struct fown_struct *fown, int sig); 363 int security_file_receive(struct file *file); 364 int security_file_open(struct file *file); 365 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 366 void security_task_free(struct task_struct *task); 367 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 368 void security_cred_free(struct cred *cred); 369 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 370 void security_transfer_creds(struct cred *new, const struct cred *old); 371 void security_cred_getsecid(const struct cred *c, u32 *secid); 372 int security_kernel_act_as(struct cred *new, u32 secid); 373 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 374 int security_kernel_module_request(char *kmod_name); 375 int security_kernel_load_data(enum kernel_load_data_id id); 376 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 377 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 378 enum kernel_read_file_id id); 379 int security_task_fix_setuid(struct cred *new, const struct cred *old, 380 int flags); 381 int security_task_setpgid(struct task_struct *p, pid_t pgid); 382 int security_task_getpgid(struct task_struct *p); 383 int security_task_getsid(struct task_struct *p); 384 void security_task_getsecid(struct task_struct *p, u32 *secid); 385 int security_task_setnice(struct task_struct *p, int nice); 386 int security_task_setioprio(struct task_struct *p, int ioprio); 387 int security_task_getioprio(struct task_struct *p); 388 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 389 unsigned int flags); 390 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 391 struct rlimit *new_rlim); 392 int security_task_setscheduler(struct task_struct *p); 393 int security_task_getscheduler(struct task_struct *p); 394 int security_task_movememory(struct task_struct *p); 395 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 396 int sig, const struct cred *cred); 397 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 398 unsigned long arg4, unsigned long arg5); 399 void security_task_to_inode(struct task_struct *p, struct inode *inode); 400 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 401 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 402 int security_msg_msg_alloc(struct msg_msg *msg); 403 void security_msg_msg_free(struct msg_msg *msg); 404 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 405 void security_msg_queue_free(struct kern_ipc_perm *msq); 406 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 407 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 408 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 409 struct msg_msg *msg, int msqflg); 410 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 411 struct task_struct *target, long type, int mode); 412 int security_shm_alloc(struct kern_ipc_perm *shp); 413 void security_shm_free(struct kern_ipc_perm *shp); 414 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 415 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 416 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 417 int security_sem_alloc(struct kern_ipc_perm *sma); 418 void security_sem_free(struct kern_ipc_perm *sma); 419 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 420 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 421 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 422 unsigned nsops, int alter); 423 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 424 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 425 char **value); 426 int security_setprocattr(const char *lsm, const char *name, void *value, 427 size_t size); 428 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 429 int security_ismaclabel(const char *name); 430 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 431 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 432 void security_release_secctx(char *secdata, u32 seclen); 433 434 void security_inode_invalidate_secctx(struct inode *inode); 435 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 436 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 437 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 438 int security_locked_down(enum lockdown_reason what); 439 #else /* CONFIG_SECURITY */ 440 441 static inline int call_lsm_notifier(enum lsm_event event, void *data) 442 { 443 return 0; 444 } 445 446 static inline int register_lsm_notifier(struct notifier_block *nb) 447 { 448 return 0; 449 } 450 451 static inline int unregister_lsm_notifier(struct notifier_block *nb) 452 { 453 return 0; 454 } 455 456 static inline void security_free_mnt_opts(void **mnt_opts) 457 { 458 } 459 460 /* 461 * This is the default capabilities functionality. Most of these functions 462 * are just stubbed out, but a few must call the proper capable code. 463 */ 464 465 static inline int security_init(void) 466 { 467 return 0; 468 } 469 470 static inline int early_security_init(void) 471 { 472 return 0; 473 } 474 475 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 476 { 477 return 0; 478 } 479 480 static inline int security_binder_transaction(struct task_struct *from, 481 struct task_struct *to) 482 { 483 return 0; 484 } 485 486 static inline int security_binder_transfer_binder(struct task_struct *from, 487 struct task_struct *to) 488 { 489 return 0; 490 } 491 492 static inline int security_binder_transfer_file(struct task_struct *from, 493 struct task_struct *to, 494 struct file *file) 495 { 496 return 0; 497 } 498 499 static inline int security_ptrace_access_check(struct task_struct *child, 500 unsigned int mode) 501 { 502 return cap_ptrace_access_check(child, mode); 503 } 504 505 static inline int security_ptrace_traceme(struct task_struct *parent) 506 { 507 return cap_ptrace_traceme(parent); 508 } 509 510 static inline int security_capget(struct task_struct *target, 511 kernel_cap_t *effective, 512 kernel_cap_t *inheritable, 513 kernel_cap_t *permitted) 514 { 515 return cap_capget(target, effective, inheritable, permitted); 516 } 517 518 static inline int security_capset(struct cred *new, 519 const struct cred *old, 520 const kernel_cap_t *effective, 521 const kernel_cap_t *inheritable, 522 const kernel_cap_t *permitted) 523 { 524 return cap_capset(new, old, effective, inheritable, permitted); 525 } 526 527 static inline int security_capable(const struct cred *cred, 528 struct user_namespace *ns, 529 int cap, 530 unsigned int opts) 531 { 532 return cap_capable(cred, ns, cap, opts); 533 } 534 535 static inline int security_quotactl(int cmds, int type, int id, 536 struct super_block *sb) 537 { 538 return 0; 539 } 540 541 static inline int security_quota_on(struct dentry *dentry) 542 { 543 return 0; 544 } 545 546 static inline int security_syslog(int type) 547 { 548 return 0; 549 } 550 551 static inline int security_settime64(const struct timespec64 *ts, 552 const struct timezone *tz) 553 { 554 return cap_settime(ts, tz); 555 } 556 557 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 558 { 559 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 560 } 561 562 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 563 { 564 return cap_bprm_set_creds(bprm); 565 } 566 567 static inline int security_bprm_check(struct linux_binprm *bprm) 568 { 569 return 0; 570 } 571 572 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 573 { 574 } 575 576 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 577 { 578 } 579 580 static inline int security_fs_context_dup(struct fs_context *fc, 581 struct fs_context *src_fc) 582 { 583 return 0; 584 } 585 static inline int security_fs_context_parse_param(struct fs_context *fc, 586 struct fs_parameter *param) 587 { 588 return -ENOPARAM; 589 } 590 591 static inline int security_sb_alloc(struct super_block *sb) 592 { 593 return 0; 594 } 595 596 static inline void security_sb_free(struct super_block *sb) 597 { } 598 599 static inline int security_sb_eat_lsm_opts(char *options, 600 void **mnt_opts) 601 { 602 return 0; 603 } 604 605 static inline int security_sb_remount(struct super_block *sb, 606 void *mnt_opts) 607 { 608 return 0; 609 } 610 611 static inline int security_sb_kern_mount(struct super_block *sb) 612 { 613 return 0; 614 } 615 616 static inline int security_sb_show_options(struct seq_file *m, 617 struct super_block *sb) 618 { 619 return 0; 620 } 621 622 static inline int security_sb_statfs(struct dentry *dentry) 623 { 624 return 0; 625 } 626 627 static inline int security_sb_mount(const char *dev_name, const struct path *path, 628 const char *type, unsigned long flags, 629 void *data) 630 { 631 return 0; 632 } 633 634 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 635 { 636 return 0; 637 } 638 639 static inline int security_sb_pivotroot(const struct path *old_path, 640 const struct path *new_path) 641 { 642 return 0; 643 } 644 645 static inline int security_sb_set_mnt_opts(struct super_block *sb, 646 void *mnt_opts, 647 unsigned long kern_flags, 648 unsigned long *set_kern_flags) 649 { 650 return 0; 651 } 652 653 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 654 struct super_block *newsb, 655 unsigned long kern_flags, 656 unsigned long *set_kern_flags) 657 { 658 return 0; 659 } 660 661 static inline int security_add_mnt_opt(const char *option, const char *val, 662 int len, void **mnt_opts) 663 { 664 return 0; 665 } 666 667 static inline int security_move_mount(const struct path *from_path, 668 const struct path *to_path) 669 { 670 return 0; 671 } 672 673 static inline int security_inode_alloc(struct inode *inode) 674 { 675 return 0; 676 } 677 678 static inline void security_inode_free(struct inode *inode) 679 { } 680 681 static inline int security_dentry_init_security(struct dentry *dentry, 682 int mode, 683 const struct qstr *name, 684 void **ctx, 685 u32 *ctxlen) 686 { 687 return -EOPNOTSUPP; 688 } 689 690 static inline int security_dentry_create_files_as(struct dentry *dentry, 691 int mode, struct qstr *name, 692 const struct cred *old, 693 struct cred *new) 694 { 695 return 0; 696 } 697 698 699 static inline int security_inode_init_security(struct inode *inode, 700 struct inode *dir, 701 const struct qstr *qstr, 702 const initxattrs xattrs, 703 void *fs_data) 704 { 705 return 0; 706 } 707 708 static inline int security_old_inode_init_security(struct inode *inode, 709 struct inode *dir, 710 const struct qstr *qstr, 711 const char **name, 712 void **value, size_t *len) 713 { 714 return -EOPNOTSUPP; 715 } 716 717 static inline int security_inode_create(struct inode *dir, 718 struct dentry *dentry, 719 umode_t mode) 720 { 721 return 0; 722 } 723 724 static inline int security_inode_link(struct dentry *old_dentry, 725 struct inode *dir, 726 struct dentry *new_dentry) 727 { 728 return 0; 729 } 730 731 static inline int security_inode_unlink(struct inode *dir, 732 struct dentry *dentry) 733 { 734 return 0; 735 } 736 737 static inline int security_inode_symlink(struct inode *dir, 738 struct dentry *dentry, 739 const char *old_name) 740 { 741 return 0; 742 } 743 744 static inline int security_inode_mkdir(struct inode *dir, 745 struct dentry *dentry, 746 int mode) 747 { 748 return 0; 749 } 750 751 static inline int security_inode_rmdir(struct inode *dir, 752 struct dentry *dentry) 753 { 754 return 0; 755 } 756 757 static inline int security_inode_mknod(struct inode *dir, 758 struct dentry *dentry, 759 int mode, dev_t dev) 760 { 761 return 0; 762 } 763 764 static inline int security_inode_rename(struct inode *old_dir, 765 struct dentry *old_dentry, 766 struct inode *new_dir, 767 struct dentry *new_dentry, 768 unsigned int flags) 769 { 770 return 0; 771 } 772 773 static inline int security_inode_readlink(struct dentry *dentry) 774 { 775 return 0; 776 } 777 778 static inline int security_inode_follow_link(struct dentry *dentry, 779 struct inode *inode, 780 bool rcu) 781 { 782 return 0; 783 } 784 785 static inline int security_inode_permission(struct inode *inode, int mask) 786 { 787 return 0; 788 } 789 790 static inline int security_inode_setattr(struct dentry *dentry, 791 struct iattr *attr) 792 { 793 return 0; 794 } 795 796 static inline int security_inode_getattr(const struct path *path) 797 { 798 return 0; 799 } 800 801 static inline int security_inode_setxattr(struct dentry *dentry, 802 const char *name, const void *value, size_t size, int flags) 803 { 804 return cap_inode_setxattr(dentry, name, value, size, flags); 805 } 806 807 static inline void security_inode_post_setxattr(struct dentry *dentry, 808 const char *name, const void *value, size_t size, int flags) 809 { } 810 811 static inline int security_inode_getxattr(struct dentry *dentry, 812 const char *name) 813 { 814 return 0; 815 } 816 817 static inline int security_inode_listxattr(struct dentry *dentry) 818 { 819 return 0; 820 } 821 822 static inline int security_inode_removexattr(struct dentry *dentry, 823 const char *name) 824 { 825 return cap_inode_removexattr(dentry, name); 826 } 827 828 static inline int security_inode_need_killpriv(struct dentry *dentry) 829 { 830 return cap_inode_need_killpriv(dentry); 831 } 832 833 static inline int security_inode_killpriv(struct dentry *dentry) 834 { 835 return cap_inode_killpriv(dentry); 836 } 837 838 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 839 { 840 return -EOPNOTSUPP; 841 } 842 843 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 844 { 845 return -EOPNOTSUPP; 846 } 847 848 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 849 { 850 return 0; 851 } 852 853 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 854 { 855 *secid = 0; 856 } 857 858 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 859 { 860 return 0; 861 } 862 863 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 864 struct kernfs_node *kn) 865 { 866 return 0; 867 } 868 869 static inline int security_inode_copy_up_xattr(const char *name) 870 { 871 return -EOPNOTSUPP; 872 } 873 874 static inline int security_file_permission(struct file *file, int mask) 875 { 876 return 0; 877 } 878 879 static inline int security_file_alloc(struct file *file) 880 { 881 return 0; 882 } 883 884 static inline void security_file_free(struct file *file) 885 { } 886 887 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 888 unsigned long arg) 889 { 890 return 0; 891 } 892 893 static inline int security_mmap_file(struct file *file, unsigned long prot, 894 unsigned long flags) 895 { 896 return 0; 897 } 898 899 static inline int security_mmap_addr(unsigned long addr) 900 { 901 return cap_mmap_addr(addr); 902 } 903 904 static inline int security_file_mprotect(struct vm_area_struct *vma, 905 unsigned long reqprot, 906 unsigned long prot) 907 { 908 return 0; 909 } 910 911 static inline int security_file_lock(struct file *file, unsigned int cmd) 912 { 913 return 0; 914 } 915 916 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 917 unsigned long arg) 918 { 919 return 0; 920 } 921 922 static inline void security_file_set_fowner(struct file *file) 923 { 924 return; 925 } 926 927 static inline int security_file_send_sigiotask(struct task_struct *tsk, 928 struct fown_struct *fown, 929 int sig) 930 { 931 return 0; 932 } 933 934 static inline int security_file_receive(struct file *file) 935 { 936 return 0; 937 } 938 939 static inline int security_file_open(struct file *file) 940 { 941 return 0; 942 } 943 944 static inline int security_task_alloc(struct task_struct *task, 945 unsigned long clone_flags) 946 { 947 return 0; 948 } 949 950 static inline void security_task_free(struct task_struct *task) 951 { } 952 953 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 954 { 955 return 0; 956 } 957 958 static inline void security_cred_free(struct cred *cred) 959 { } 960 961 static inline int security_prepare_creds(struct cred *new, 962 const struct cred *old, 963 gfp_t gfp) 964 { 965 return 0; 966 } 967 968 static inline void security_transfer_creds(struct cred *new, 969 const struct cred *old) 970 { 971 } 972 973 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 974 { 975 return 0; 976 } 977 978 static inline int security_kernel_create_files_as(struct cred *cred, 979 struct inode *inode) 980 { 981 return 0; 982 } 983 984 static inline int security_kernel_module_request(char *kmod_name) 985 { 986 return 0; 987 } 988 989 static inline int security_kernel_load_data(enum kernel_load_data_id id) 990 { 991 return 0; 992 } 993 994 static inline int security_kernel_read_file(struct file *file, 995 enum kernel_read_file_id id) 996 { 997 return 0; 998 } 999 1000 static inline int security_kernel_post_read_file(struct file *file, 1001 char *buf, loff_t size, 1002 enum kernel_read_file_id id) 1003 { 1004 return 0; 1005 } 1006 1007 static inline int security_task_fix_setuid(struct cred *new, 1008 const struct cred *old, 1009 int flags) 1010 { 1011 return cap_task_fix_setuid(new, old, flags); 1012 } 1013 1014 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1015 { 1016 return 0; 1017 } 1018 1019 static inline int security_task_getpgid(struct task_struct *p) 1020 { 1021 return 0; 1022 } 1023 1024 static inline int security_task_getsid(struct task_struct *p) 1025 { 1026 return 0; 1027 } 1028 1029 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1030 { 1031 *secid = 0; 1032 } 1033 1034 static inline int security_task_setnice(struct task_struct *p, int nice) 1035 { 1036 return cap_task_setnice(p, nice); 1037 } 1038 1039 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1040 { 1041 return cap_task_setioprio(p, ioprio); 1042 } 1043 1044 static inline int security_task_getioprio(struct task_struct *p) 1045 { 1046 return 0; 1047 } 1048 1049 static inline int security_task_prlimit(const struct cred *cred, 1050 const struct cred *tcred, 1051 unsigned int flags) 1052 { 1053 return 0; 1054 } 1055 1056 static inline int security_task_setrlimit(struct task_struct *p, 1057 unsigned int resource, 1058 struct rlimit *new_rlim) 1059 { 1060 return 0; 1061 } 1062 1063 static inline int security_task_setscheduler(struct task_struct *p) 1064 { 1065 return cap_task_setscheduler(p); 1066 } 1067 1068 static inline int security_task_getscheduler(struct task_struct *p) 1069 { 1070 return 0; 1071 } 1072 1073 static inline int security_task_movememory(struct task_struct *p) 1074 { 1075 return 0; 1076 } 1077 1078 static inline int security_task_kill(struct task_struct *p, 1079 struct kernel_siginfo *info, int sig, 1080 const struct cred *cred) 1081 { 1082 return 0; 1083 } 1084 1085 static inline int security_task_prctl(int option, unsigned long arg2, 1086 unsigned long arg3, 1087 unsigned long arg4, 1088 unsigned long arg5) 1089 { 1090 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1091 } 1092 1093 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1094 { } 1095 1096 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1097 short flag) 1098 { 1099 return 0; 1100 } 1101 1102 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1103 { 1104 *secid = 0; 1105 } 1106 1107 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1108 { 1109 return 0; 1110 } 1111 1112 static inline void security_msg_msg_free(struct msg_msg *msg) 1113 { } 1114 1115 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1116 { 1117 return 0; 1118 } 1119 1120 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1121 { } 1122 1123 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1124 int msqflg) 1125 { 1126 return 0; 1127 } 1128 1129 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1130 { 1131 return 0; 1132 } 1133 1134 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1135 struct msg_msg *msg, int msqflg) 1136 { 1137 return 0; 1138 } 1139 1140 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1141 struct msg_msg *msg, 1142 struct task_struct *target, 1143 long type, int mode) 1144 { 1145 return 0; 1146 } 1147 1148 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1149 { 1150 return 0; 1151 } 1152 1153 static inline void security_shm_free(struct kern_ipc_perm *shp) 1154 { } 1155 1156 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1157 int shmflg) 1158 { 1159 return 0; 1160 } 1161 1162 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1163 { 1164 return 0; 1165 } 1166 1167 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1168 char __user *shmaddr, int shmflg) 1169 { 1170 return 0; 1171 } 1172 1173 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1174 { 1175 return 0; 1176 } 1177 1178 static inline void security_sem_free(struct kern_ipc_perm *sma) 1179 { } 1180 1181 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1182 { 1183 return 0; 1184 } 1185 1186 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1187 { 1188 return 0; 1189 } 1190 1191 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1192 struct sembuf *sops, unsigned nsops, 1193 int alter) 1194 { 1195 return 0; 1196 } 1197 1198 static inline void security_d_instantiate(struct dentry *dentry, 1199 struct inode *inode) 1200 { } 1201 1202 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1203 char *name, char **value) 1204 { 1205 return -EINVAL; 1206 } 1207 1208 static inline int security_setprocattr(const char *lsm, char *name, 1209 void *value, size_t size) 1210 { 1211 return -EINVAL; 1212 } 1213 1214 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1215 { 1216 return 0; 1217 } 1218 1219 static inline int security_ismaclabel(const char *name) 1220 { 1221 return 0; 1222 } 1223 1224 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1225 { 1226 return -EOPNOTSUPP; 1227 } 1228 1229 static inline int security_secctx_to_secid(const char *secdata, 1230 u32 seclen, 1231 u32 *secid) 1232 { 1233 return -EOPNOTSUPP; 1234 } 1235 1236 static inline void security_release_secctx(char *secdata, u32 seclen) 1237 { 1238 } 1239 1240 static inline void security_inode_invalidate_secctx(struct inode *inode) 1241 { 1242 } 1243 1244 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1245 { 1246 return -EOPNOTSUPP; 1247 } 1248 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1249 { 1250 return -EOPNOTSUPP; 1251 } 1252 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1253 { 1254 return -EOPNOTSUPP; 1255 } 1256 static inline int security_locked_down(enum lockdown_reason what) 1257 { 1258 return 0; 1259 } 1260 #endif /* CONFIG_SECURITY */ 1261 1262 #ifdef CONFIG_SECURITY_NETWORK 1263 1264 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1265 int security_unix_may_send(struct socket *sock, struct socket *other); 1266 int security_socket_create(int family, int type, int protocol, int kern); 1267 int security_socket_post_create(struct socket *sock, int family, 1268 int type, int protocol, int kern); 1269 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1270 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1271 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1272 int security_socket_listen(struct socket *sock, int backlog); 1273 int security_socket_accept(struct socket *sock, struct socket *newsock); 1274 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1275 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1276 int size, int flags); 1277 int security_socket_getsockname(struct socket *sock); 1278 int security_socket_getpeername(struct socket *sock); 1279 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1280 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1281 int security_socket_shutdown(struct socket *sock, int how); 1282 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1283 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1284 int __user *optlen, unsigned len); 1285 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1286 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1287 void security_sk_free(struct sock *sk); 1288 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1289 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1290 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1291 void security_sock_graft(struct sock*sk, struct socket *parent); 1292 int security_inet_conn_request(struct sock *sk, 1293 struct sk_buff *skb, struct request_sock *req); 1294 void security_inet_csk_clone(struct sock *newsk, 1295 const struct request_sock *req); 1296 void security_inet_conn_established(struct sock *sk, 1297 struct sk_buff *skb); 1298 int security_secmark_relabel_packet(u32 secid); 1299 void security_secmark_refcount_inc(void); 1300 void security_secmark_refcount_dec(void); 1301 int security_tun_dev_alloc_security(void **security); 1302 void security_tun_dev_free_security(void *security); 1303 int security_tun_dev_create(void); 1304 int security_tun_dev_attach_queue(void *security); 1305 int security_tun_dev_attach(struct sock *sk, void *security); 1306 int security_tun_dev_open(void *security); 1307 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1308 int security_sctp_bind_connect(struct sock *sk, int optname, 1309 struct sockaddr *address, int addrlen); 1310 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1311 struct sock *newsk); 1312 1313 #else /* CONFIG_SECURITY_NETWORK */ 1314 static inline int security_unix_stream_connect(struct sock *sock, 1315 struct sock *other, 1316 struct sock *newsk) 1317 { 1318 return 0; 1319 } 1320 1321 static inline int security_unix_may_send(struct socket *sock, 1322 struct socket *other) 1323 { 1324 return 0; 1325 } 1326 1327 static inline int security_socket_create(int family, int type, 1328 int protocol, int kern) 1329 { 1330 return 0; 1331 } 1332 1333 static inline int security_socket_post_create(struct socket *sock, 1334 int family, 1335 int type, 1336 int protocol, int kern) 1337 { 1338 return 0; 1339 } 1340 1341 static inline int security_socket_socketpair(struct socket *socka, 1342 struct socket *sockb) 1343 { 1344 return 0; 1345 } 1346 1347 static inline int security_socket_bind(struct socket *sock, 1348 struct sockaddr *address, 1349 int addrlen) 1350 { 1351 return 0; 1352 } 1353 1354 static inline int security_socket_connect(struct socket *sock, 1355 struct sockaddr *address, 1356 int addrlen) 1357 { 1358 return 0; 1359 } 1360 1361 static inline int security_socket_listen(struct socket *sock, int backlog) 1362 { 1363 return 0; 1364 } 1365 1366 static inline int security_socket_accept(struct socket *sock, 1367 struct socket *newsock) 1368 { 1369 return 0; 1370 } 1371 1372 static inline int security_socket_sendmsg(struct socket *sock, 1373 struct msghdr *msg, int size) 1374 { 1375 return 0; 1376 } 1377 1378 static inline int security_socket_recvmsg(struct socket *sock, 1379 struct msghdr *msg, int size, 1380 int flags) 1381 { 1382 return 0; 1383 } 1384 1385 static inline int security_socket_getsockname(struct socket *sock) 1386 { 1387 return 0; 1388 } 1389 1390 static inline int security_socket_getpeername(struct socket *sock) 1391 { 1392 return 0; 1393 } 1394 1395 static inline int security_socket_getsockopt(struct socket *sock, 1396 int level, int optname) 1397 { 1398 return 0; 1399 } 1400 1401 static inline int security_socket_setsockopt(struct socket *sock, 1402 int level, int optname) 1403 { 1404 return 0; 1405 } 1406 1407 static inline int security_socket_shutdown(struct socket *sock, int how) 1408 { 1409 return 0; 1410 } 1411 static inline int security_sock_rcv_skb(struct sock *sk, 1412 struct sk_buff *skb) 1413 { 1414 return 0; 1415 } 1416 1417 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1418 int __user *optlen, unsigned len) 1419 { 1420 return -ENOPROTOOPT; 1421 } 1422 1423 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1424 { 1425 return -ENOPROTOOPT; 1426 } 1427 1428 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1429 { 1430 return 0; 1431 } 1432 1433 static inline void security_sk_free(struct sock *sk) 1434 { 1435 } 1436 1437 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1438 { 1439 } 1440 1441 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1442 { 1443 } 1444 1445 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1446 { 1447 } 1448 1449 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1450 { 1451 } 1452 1453 static inline int security_inet_conn_request(struct sock *sk, 1454 struct sk_buff *skb, struct request_sock *req) 1455 { 1456 return 0; 1457 } 1458 1459 static inline void security_inet_csk_clone(struct sock *newsk, 1460 const struct request_sock *req) 1461 { 1462 } 1463 1464 static inline void security_inet_conn_established(struct sock *sk, 1465 struct sk_buff *skb) 1466 { 1467 } 1468 1469 static inline int security_secmark_relabel_packet(u32 secid) 1470 { 1471 return 0; 1472 } 1473 1474 static inline void security_secmark_refcount_inc(void) 1475 { 1476 } 1477 1478 static inline void security_secmark_refcount_dec(void) 1479 { 1480 } 1481 1482 static inline int security_tun_dev_alloc_security(void **security) 1483 { 1484 return 0; 1485 } 1486 1487 static inline void security_tun_dev_free_security(void *security) 1488 { 1489 } 1490 1491 static inline int security_tun_dev_create(void) 1492 { 1493 return 0; 1494 } 1495 1496 static inline int security_tun_dev_attach_queue(void *security) 1497 { 1498 return 0; 1499 } 1500 1501 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1502 { 1503 return 0; 1504 } 1505 1506 static inline int security_tun_dev_open(void *security) 1507 { 1508 return 0; 1509 } 1510 1511 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1512 struct sk_buff *skb) 1513 { 1514 return 0; 1515 } 1516 1517 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1518 struct sockaddr *address, 1519 int addrlen) 1520 { 1521 return 0; 1522 } 1523 1524 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1525 struct sock *sk, 1526 struct sock *newsk) 1527 { 1528 } 1529 #endif /* CONFIG_SECURITY_NETWORK */ 1530 1531 #ifdef CONFIG_SECURITY_INFINIBAND 1532 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1533 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1534 int security_ib_alloc_security(void **sec); 1535 void security_ib_free_security(void *sec); 1536 #else /* CONFIG_SECURITY_INFINIBAND */ 1537 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1538 { 1539 return 0; 1540 } 1541 1542 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1543 { 1544 return 0; 1545 } 1546 1547 static inline int security_ib_alloc_security(void **sec) 1548 { 1549 return 0; 1550 } 1551 1552 static inline void security_ib_free_security(void *sec) 1553 { 1554 } 1555 #endif /* CONFIG_SECURITY_INFINIBAND */ 1556 1557 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1558 1559 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1560 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1561 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1562 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1563 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1564 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1565 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1566 struct xfrm_sec_ctx *polsec, u32 secid); 1567 int security_xfrm_state_delete(struct xfrm_state *x); 1568 void security_xfrm_state_free(struct xfrm_state *x); 1569 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1570 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1571 struct xfrm_policy *xp, 1572 const struct flowi *fl); 1573 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1574 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1575 1576 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1577 1578 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1579 struct xfrm_user_sec_ctx *sec_ctx, 1580 gfp_t gfp) 1581 { 1582 return 0; 1583 } 1584 1585 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1586 { 1587 return 0; 1588 } 1589 1590 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1591 { 1592 } 1593 1594 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1595 { 1596 return 0; 1597 } 1598 1599 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1600 struct xfrm_user_sec_ctx *sec_ctx) 1601 { 1602 return 0; 1603 } 1604 1605 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1606 struct xfrm_sec_ctx *polsec, u32 secid) 1607 { 1608 return 0; 1609 } 1610 1611 static inline void security_xfrm_state_free(struct xfrm_state *x) 1612 { 1613 } 1614 1615 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1616 { 1617 return 0; 1618 } 1619 1620 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1621 { 1622 return 0; 1623 } 1624 1625 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1626 struct xfrm_policy *xp, const struct flowi *fl) 1627 { 1628 return 1; 1629 } 1630 1631 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1632 { 1633 return 0; 1634 } 1635 1636 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1637 { 1638 } 1639 1640 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1641 1642 #ifdef CONFIG_SECURITY_PATH 1643 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1644 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1645 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1646 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1647 unsigned int dev); 1648 int security_path_truncate(const struct path *path); 1649 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1650 const char *old_name); 1651 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1652 struct dentry *new_dentry); 1653 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1654 const struct path *new_dir, struct dentry *new_dentry, 1655 unsigned int flags); 1656 int security_path_chmod(const struct path *path, umode_t mode); 1657 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1658 int security_path_chroot(const struct path *path); 1659 #else /* CONFIG_SECURITY_PATH */ 1660 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1661 { 1662 return 0; 1663 } 1664 1665 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1666 umode_t mode) 1667 { 1668 return 0; 1669 } 1670 1671 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1672 { 1673 return 0; 1674 } 1675 1676 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1677 umode_t mode, unsigned int dev) 1678 { 1679 return 0; 1680 } 1681 1682 static inline int security_path_truncate(const struct path *path) 1683 { 1684 return 0; 1685 } 1686 1687 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1688 const char *old_name) 1689 { 1690 return 0; 1691 } 1692 1693 static inline int security_path_link(struct dentry *old_dentry, 1694 const struct path *new_dir, 1695 struct dentry *new_dentry) 1696 { 1697 return 0; 1698 } 1699 1700 static inline int security_path_rename(const struct path *old_dir, 1701 struct dentry *old_dentry, 1702 const struct path *new_dir, 1703 struct dentry *new_dentry, 1704 unsigned int flags) 1705 { 1706 return 0; 1707 } 1708 1709 static inline int security_path_chmod(const struct path *path, umode_t mode) 1710 { 1711 return 0; 1712 } 1713 1714 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1715 { 1716 return 0; 1717 } 1718 1719 static inline int security_path_chroot(const struct path *path) 1720 { 1721 return 0; 1722 } 1723 #endif /* CONFIG_SECURITY_PATH */ 1724 1725 #ifdef CONFIG_KEYS 1726 #ifdef CONFIG_SECURITY 1727 1728 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1729 void security_key_free(struct key *key); 1730 int security_key_permission(key_ref_t key_ref, 1731 const struct cred *cred, unsigned perm); 1732 int security_key_getsecurity(struct key *key, char **_buffer); 1733 1734 #else 1735 1736 static inline int security_key_alloc(struct key *key, 1737 const struct cred *cred, 1738 unsigned long flags) 1739 { 1740 return 0; 1741 } 1742 1743 static inline void security_key_free(struct key *key) 1744 { 1745 } 1746 1747 static inline int security_key_permission(key_ref_t key_ref, 1748 const struct cred *cred, 1749 unsigned perm) 1750 { 1751 return 0; 1752 } 1753 1754 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1755 { 1756 *_buffer = NULL; 1757 return 0; 1758 } 1759 1760 #endif 1761 #endif /* CONFIG_KEYS */ 1762 1763 #ifdef CONFIG_AUDIT 1764 #ifdef CONFIG_SECURITY 1765 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1766 int security_audit_rule_known(struct audit_krule *krule); 1767 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1768 void security_audit_rule_free(void *lsmrule); 1769 1770 #else 1771 1772 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1773 void **lsmrule) 1774 { 1775 return 0; 1776 } 1777 1778 static inline int security_audit_rule_known(struct audit_krule *krule) 1779 { 1780 return 0; 1781 } 1782 1783 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1784 void *lsmrule) 1785 { 1786 return 0; 1787 } 1788 1789 static inline void security_audit_rule_free(void *lsmrule) 1790 { } 1791 1792 #endif /* CONFIG_SECURITY */ 1793 #endif /* CONFIG_AUDIT */ 1794 1795 #ifdef CONFIG_SECURITYFS 1796 1797 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1798 struct dentry *parent, void *data, 1799 const struct file_operations *fops); 1800 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1801 struct dentry *securityfs_create_symlink(const char *name, 1802 struct dentry *parent, 1803 const char *target, 1804 const struct inode_operations *iops); 1805 extern void securityfs_remove(struct dentry *dentry); 1806 1807 #else /* CONFIG_SECURITYFS */ 1808 1809 static inline struct dentry *securityfs_create_dir(const char *name, 1810 struct dentry *parent) 1811 { 1812 return ERR_PTR(-ENODEV); 1813 } 1814 1815 static inline struct dentry *securityfs_create_file(const char *name, 1816 umode_t mode, 1817 struct dentry *parent, 1818 void *data, 1819 const struct file_operations *fops) 1820 { 1821 return ERR_PTR(-ENODEV); 1822 } 1823 1824 static inline struct dentry *securityfs_create_symlink(const char *name, 1825 struct dentry *parent, 1826 const char *target, 1827 const struct inode_operations *iops) 1828 { 1829 return ERR_PTR(-ENODEV); 1830 } 1831 1832 static inline void securityfs_remove(struct dentry *dentry) 1833 {} 1834 1835 #endif 1836 1837 #ifdef CONFIG_BPF_SYSCALL 1838 union bpf_attr; 1839 struct bpf_map; 1840 struct bpf_prog; 1841 struct bpf_prog_aux; 1842 #ifdef CONFIG_SECURITY 1843 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1844 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1845 extern int security_bpf_prog(struct bpf_prog *prog); 1846 extern int security_bpf_map_alloc(struct bpf_map *map); 1847 extern void security_bpf_map_free(struct bpf_map *map); 1848 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1849 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1850 #else 1851 static inline int security_bpf(int cmd, union bpf_attr *attr, 1852 unsigned int size) 1853 { 1854 return 0; 1855 } 1856 1857 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1858 { 1859 return 0; 1860 } 1861 1862 static inline int security_bpf_prog(struct bpf_prog *prog) 1863 { 1864 return 0; 1865 } 1866 1867 static inline int security_bpf_map_alloc(struct bpf_map *map) 1868 { 1869 return 0; 1870 } 1871 1872 static inline void security_bpf_map_free(struct bpf_map *map) 1873 { } 1874 1875 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1876 { 1877 return 0; 1878 } 1879 1880 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1881 { } 1882 #endif /* CONFIG_SECURITY */ 1883 #endif /* CONFIG_BPF_SYSCALL */ 1884 1885 #endif /* ! __LINUX_SECURITY_H */ 1886 1887