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