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 34 struct linux_binprm; 35 struct cred; 36 struct rlimit; 37 struct kernel_siginfo; 38 struct sembuf; 39 struct kern_ipc_perm; 40 struct audit_context; 41 struct super_block; 42 struct inode; 43 struct dentry; 44 struct file; 45 struct vfsmount; 46 struct path; 47 struct qstr; 48 struct iattr; 49 struct fown_struct; 50 struct file_operations; 51 struct msg_msg; 52 struct xattr; 53 struct kernfs_node; 54 struct xfrm_sec_ctx; 55 struct mm_struct; 56 struct fs_context; 57 struct fs_parameter; 58 enum fs_value_type; 59 struct watch; 60 struct watch_notification; 61 62 /* Default (no) options for the capable function */ 63 #define CAP_OPT_NONE 0x0 64 /* If capable should audit the security request */ 65 #define CAP_OPT_NOAUDIT BIT(1) 66 /* If capable is being called by a setid function */ 67 #define CAP_OPT_INSETID BIT(2) 68 69 /* LSM Agnostic defines for fs_context::lsm_flags */ 70 #define SECURITY_LSM_NATIVE_LABELS 1 71 72 struct ctl_table; 73 struct audit_krule; 74 struct user_namespace; 75 struct timezone; 76 77 enum lsm_event { 78 LSM_POLICY_CHANGE, 79 }; 80 81 /* 82 * These are reasons that can be passed to the security_locked_down() 83 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 84 * ability for userland to modify kernel code) are placed before 85 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 86 * confidentiality (ie, the ability for userland to extract 87 * information from the running kernel that would otherwise be 88 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 89 * 90 * LSM authors should note that the semantics of any given lockdown 91 * reason are not guaranteed to be stable - the same reason may block 92 * one set of features in one kernel release, and a slightly different 93 * set of features in a later kernel release. LSMs that seek to expose 94 * lockdown policy at any level of granularity other than "none", 95 * "integrity" or "confidentiality" are responsible for either 96 * ensuring that they expose a consistent level of functionality to 97 * userland, or ensuring that userland is aware that this is 98 * potentially a moving target. It is easy to misuse this information 99 * in a way that could break userspace. Please be careful not to do 100 * so. 101 * 102 * If you add to this, remember to extend lockdown_reasons in 103 * security/lockdown/lockdown.c. 104 */ 105 enum lockdown_reason { 106 LOCKDOWN_NONE, 107 LOCKDOWN_MODULE_SIGNATURE, 108 LOCKDOWN_DEV_MEM, 109 LOCKDOWN_EFI_TEST, 110 LOCKDOWN_KEXEC, 111 LOCKDOWN_HIBERNATION, 112 LOCKDOWN_PCI_ACCESS, 113 LOCKDOWN_IOPORT, 114 LOCKDOWN_MSR, 115 LOCKDOWN_ACPI_TABLES, 116 LOCKDOWN_PCMCIA_CIS, 117 LOCKDOWN_TIOCSSERIAL, 118 LOCKDOWN_MODULE_PARAMETERS, 119 LOCKDOWN_MMIOTRACE, 120 LOCKDOWN_DEBUGFS, 121 LOCKDOWN_XMON_WR, 122 LOCKDOWN_INTEGRITY_MAX, 123 LOCKDOWN_KCORE, 124 LOCKDOWN_KPROBES, 125 LOCKDOWN_BPF_READ, 126 LOCKDOWN_PERF, 127 LOCKDOWN_TRACEFS, 128 LOCKDOWN_XMON_RW, 129 LOCKDOWN_CONFIDENTIALITY_MAX, 130 }; 131 132 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 133 134 /* These functions are in security/commoncap.c */ 135 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 136 int cap, unsigned int opts); 137 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 138 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 139 extern int cap_ptrace_traceme(struct task_struct *parent); 140 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 141 extern int cap_capset(struct cred *new, const struct cred *old, 142 const kernel_cap_t *effective, 143 const kernel_cap_t *inheritable, 144 const kernel_cap_t *permitted); 145 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 146 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 147 const void *value, size_t size, int flags); 148 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 149 extern int cap_inode_need_killpriv(struct dentry *dentry); 150 extern int cap_inode_killpriv(struct dentry *dentry); 151 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 152 void **buffer, bool alloc); 153 extern int cap_mmap_addr(unsigned long addr); 154 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 155 unsigned long prot, unsigned long flags); 156 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 157 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 158 unsigned long arg4, unsigned long arg5); 159 extern int cap_task_setscheduler(struct task_struct *p); 160 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 161 extern int cap_task_setnice(struct task_struct *p, int nice); 162 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 163 164 struct msghdr; 165 struct sk_buff; 166 struct sock; 167 struct sockaddr; 168 struct socket; 169 struct flowi; 170 struct dst_entry; 171 struct xfrm_selector; 172 struct xfrm_policy; 173 struct xfrm_state; 174 struct xfrm_user_sec_ctx; 175 struct seq_file; 176 struct sctp_endpoint; 177 178 #ifdef CONFIG_MMU 179 extern unsigned long mmap_min_addr; 180 extern unsigned long dac_mmap_min_addr; 181 #else 182 #define mmap_min_addr 0UL 183 #define dac_mmap_min_addr 0UL 184 #endif 185 186 /* 187 * Values used in the task_security_ops calls 188 */ 189 /* setuid or setgid, id0 == uid or gid */ 190 #define LSM_SETID_ID 1 191 192 /* setreuid or setregid, id0 == real, id1 == eff */ 193 #define LSM_SETID_RE 2 194 195 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 196 #define LSM_SETID_RES 4 197 198 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 199 #define LSM_SETID_FS 8 200 201 /* Flags for security_task_prlimit(). */ 202 #define LSM_PRLIMIT_READ 1 203 #define LSM_PRLIMIT_WRITE 2 204 205 /* forward declares to avoid warnings */ 206 struct sched_param; 207 struct request_sock; 208 209 /* bprm->unsafe reasons */ 210 #define LSM_UNSAFE_SHARE 1 211 #define LSM_UNSAFE_PTRACE 2 212 #define LSM_UNSAFE_NO_NEW_PRIVS 4 213 214 #ifdef CONFIG_MMU 215 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 216 void *buffer, size_t *lenp, loff_t *ppos); 217 #endif 218 219 /* security_inode_init_security callback function to write xattrs */ 220 typedef int (*initxattrs) (struct inode *inode, 221 const struct xattr *xattr_array, void *fs_data); 222 223 224 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 225 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 226 #define __data_id_stringify(dummy, str) #str, 227 228 enum kernel_load_data_id { 229 __kernel_read_file_id(__data_id_enumify) 230 }; 231 232 static const char * const kernel_load_data_str[] = { 233 __kernel_read_file_id(__data_id_stringify) 234 }; 235 236 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 237 { 238 if ((unsigned)id >= LOADING_MAX_ID) 239 return kernel_load_data_str[LOADING_UNKNOWN]; 240 241 return kernel_load_data_str[id]; 242 } 243 244 #ifdef CONFIG_SECURITY 245 246 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 247 int register_blocking_lsm_notifier(struct notifier_block *nb); 248 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 249 250 /* prototypes */ 251 extern int security_init(void); 252 extern int early_security_init(void); 253 254 /* Security operations */ 255 int security_binder_set_context_mgr(struct task_struct *mgr); 256 int security_binder_transaction(struct task_struct *from, 257 struct task_struct *to); 258 int security_binder_transfer_binder(struct task_struct *from, 259 struct task_struct *to); 260 int security_binder_transfer_file(struct task_struct *from, 261 struct task_struct *to, struct file *file); 262 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 263 int security_ptrace_traceme(struct task_struct *parent); 264 int security_capget(struct task_struct *target, 265 kernel_cap_t *effective, 266 kernel_cap_t *inheritable, 267 kernel_cap_t *permitted); 268 int security_capset(struct cred *new, const struct cred *old, 269 const kernel_cap_t *effective, 270 const kernel_cap_t *inheritable, 271 const kernel_cap_t *permitted); 272 int security_capable(const struct cred *cred, 273 struct user_namespace *ns, 274 int cap, 275 unsigned int opts); 276 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 277 int security_quota_on(struct dentry *dentry); 278 int security_syslog(int type); 279 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 280 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 281 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 282 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 283 int security_bprm_check(struct linux_binprm *bprm); 284 void security_bprm_committing_creds(struct linux_binprm *bprm); 285 void security_bprm_committed_creds(struct linux_binprm *bprm); 286 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 287 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 288 int security_sb_alloc(struct super_block *sb); 289 void security_sb_free(struct super_block *sb); 290 void security_free_mnt_opts(void **mnt_opts); 291 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 292 int security_sb_remount(struct super_block *sb, void *mnt_opts); 293 int security_sb_kern_mount(struct super_block *sb); 294 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 295 int security_sb_statfs(struct dentry *dentry); 296 int security_sb_mount(const char *dev_name, const struct path *path, 297 const char *type, unsigned long flags, void *data); 298 int security_sb_umount(struct vfsmount *mnt, int flags); 299 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 300 int security_sb_set_mnt_opts(struct super_block *sb, 301 void *mnt_opts, 302 unsigned long kern_flags, 303 unsigned long *set_kern_flags); 304 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 305 struct super_block *newsb, 306 unsigned long kern_flags, 307 unsigned long *set_kern_flags); 308 int security_add_mnt_opt(const char *option, const char *val, 309 int len, void **mnt_opts); 310 int security_move_mount(const struct path *from_path, const struct path *to_path); 311 int security_dentry_init_security(struct dentry *dentry, int mode, 312 const struct qstr *name, void **ctx, 313 u32 *ctxlen); 314 int security_dentry_create_files_as(struct dentry *dentry, int mode, 315 struct qstr *name, 316 const struct cred *old, 317 struct cred *new); 318 int security_path_notify(const struct path *path, u64 mask, 319 unsigned int obj_type); 320 int security_inode_alloc(struct inode *inode); 321 void security_inode_free(struct inode *inode); 322 int security_inode_init_security(struct inode *inode, struct inode *dir, 323 const struct qstr *qstr, 324 initxattrs initxattrs, void *fs_data); 325 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 326 const struct qstr *qstr, const char **name, 327 void **value, size_t *len); 328 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 329 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 330 struct dentry *new_dentry); 331 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 332 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 333 const char *old_name); 334 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 335 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 336 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 337 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 338 struct inode *new_dir, struct dentry *new_dentry, 339 unsigned int flags); 340 int security_inode_readlink(struct dentry *dentry); 341 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 342 bool rcu); 343 int security_inode_permission(struct inode *inode, int mask); 344 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 345 int security_inode_getattr(const struct path *path); 346 int security_inode_setxattr(struct dentry *dentry, const char *name, 347 const void *value, size_t size, int flags); 348 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 349 const void *value, size_t size, int flags); 350 int security_inode_getxattr(struct dentry *dentry, const char *name); 351 int security_inode_listxattr(struct dentry *dentry); 352 int security_inode_removexattr(struct dentry *dentry, const char *name); 353 int security_inode_need_killpriv(struct dentry *dentry); 354 int security_inode_killpriv(struct dentry *dentry); 355 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 356 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 357 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 358 void security_inode_getsecid(struct inode *inode, u32 *secid); 359 int security_inode_copy_up(struct dentry *src, struct cred **new); 360 int security_inode_copy_up_xattr(const char *name); 361 int security_kernfs_init_security(struct kernfs_node *kn_dir, 362 struct kernfs_node *kn); 363 int security_file_permission(struct file *file, int mask); 364 int security_file_alloc(struct file *file); 365 void security_file_free(struct file *file); 366 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 367 int security_mmap_file(struct file *file, unsigned long prot, 368 unsigned long flags); 369 int security_mmap_addr(unsigned long addr); 370 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 371 unsigned long prot); 372 int security_file_lock(struct file *file, unsigned int cmd); 373 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 374 void security_file_set_fowner(struct file *file); 375 int security_file_send_sigiotask(struct task_struct *tsk, 376 struct fown_struct *fown, int sig); 377 int security_file_receive(struct file *file); 378 int security_file_open(struct file *file); 379 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 380 void security_task_free(struct task_struct *task); 381 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 382 void security_cred_free(struct cred *cred); 383 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 384 void security_transfer_creds(struct cred *new, const struct cred *old); 385 void security_cred_getsecid(const struct cred *c, u32 *secid); 386 int security_kernel_act_as(struct cred *new, u32 secid); 387 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 388 int security_kernel_module_request(char *kmod_name); 389 int security_kernel_load_data(enum kernel_load_data_id id); 390 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 391 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 392 enum kernel_read_file_id id); 393 int security_task_fix_setuid(struct cred *new, const struct cred *old, 394 int flags); 395 int security_task_setpgid(struct task_struct *p, pid_t pgid); 396 int security_task_getpgid(struct task_struct *p); 397 int security_task_getsid(struct task_struct *p); 398 void security_task_getsecid(struct task_struct *p, u32 *secid); 399 int security_task_setnice(struct task_struct *p, int nice); 400 int security_task_setioprio(struct task_struct *p, int ioprio); 401 int security_task_getioprio(struct task_struct *p); 402 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 403 unsigned int flags); 404 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 405 struct rlimit *new_rlim); 406 int security_task_setscheduler(struct task_struct *p); 407 int security_task_getscheduler(struct task_struct *p); 408 int security_task_movememory(struct task_struct *p); 409 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 410 int sig, const struct cred *cred); 411 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 412 unsigned long arg4, unsigned long arg5); 413 void security_task_to_inode(struct task_struct *p, struct inode *inode); 414 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 415 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 416 int security_msg_msg_alloc(struct msg_msg *msg); 417 void security_msg_msg_free(struct msg_msg *msg); 418 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 419 void security_msg_queue_free(struct kern_ipc_perm *msq); 420 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 421 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 422 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 423 struct msg_msg *msg, int msqflg); 424 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 425 struct task_struct *target, long type, int mode); 426 int security_shm_alloc(struct kern_ipc_perm *shp); 427 void security_shm_free(struct kern_ipc_perm *shp); 428 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 429 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 430 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 431 int security_sem_alloc(struct kern_ipc_perm *sma); 432 void security_sem_free(struct kern_ipc_perm *sma); 433 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 434 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 435 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 436 unsigned nsops, int alter); 437 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 438 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 439 char **value); 440 int security_setprocattr(const char *lsm, const char *name, void *value, 441 size_t size); 442 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 443 int security_ismaclabel(const char *name); 444 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 445 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 446 void security_release_secctx(char *secdata, u32 seclen); 447 void security_inode_invalidate_secctx(struct inode *inode); 448 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 449 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 450 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 451 int security_locked_down(enum lockdown_reason what); 452 #else /* CONFIG_SECURITY */ 453 454 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 455 { 456 return 0; 457 } 458 459 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 460 { 461 return 0; 462 } 463 464 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 465 { 466 return 0; 467 } 468 469 static inline void security_free_mnt_opts(void **mnt_opts) 470 { 471 } 472 473 /* 474 * This is the default capabilities functionality. Most of these functions 475 * are just stubbed out, but a few must call the proper capable code. 476 */ 477 478 static inline int security_init(void) 479 { 480 return 0; 481 } 482 483 static inline int early_security_init(void) 484 { 485 return 0; 486 } 487 488 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 489 { 490 return 0; 491 } 492 493 static inline int security_binder_transaction(struct task_struct *from, 494 struct task_struct *to) 495 { 496 return 0; 497 } 498 499 static inline int security_binder_transfer_binder(struct task_struct *from, 500 struct task_struct *to) 501 { 502 return 0; 503 } 504 505 static inline int security_binder_transfer_file(struct task_struct *from, 506 struct task_struct *to, 507 struct file *file) 508 { 509 return 0; 510 } 511 512 static inline int security_ptrace_access_check(struct task_struct *child, 513 unsigned int mode) 514 { 515 return cap_ptrace_access_check(child, mode); 516 } 517 518 static inline int security_ptrace_traceme(struct task_struct *parent) 519 { 520 return cap_ptrace_traceme(parent); 521 } 522 523 static inline int security_capget(struct task_struct *target, 524 kernel_cap_t *effective, 525 kernel_cap_t *inheritable, 526 kernel_cap_t *permitted) 527 { 528 return cap_capget(target, effective, inheritable, permitted); 529 } 530 531 static inline int security_capset(struct cred *new, 532 const struct cred *old, 533 const kernel_cap_t *effective, 534 const kernel_cap_t *inheritable, 535 const kernel_cap_t *permitted) 536 { 537 return cap_capset(new, old, effective, inheritable, permitted); 538 } 539 540 static inline int security_capable(const struct cred *cred, 541 struct user_namespace *ns, 542 int cap, 543 unsigned int opts) 544 { 545 return cap_capable(cred, ns, cap, opts); 546 } 547 548 static inline int security_quotactl(int cmds, int type, int id, 549 struct super_block *sb) 550 { 551 return 0; 552 } 553 554 static inline int security_quota_on(struct dentry *dentry) 555 { 556 return 0; 557 } 558 559 static inline int security_syslog(int type) 560 { 561 return 0; 562 } 563 564 static inline int security_settime64(const struct timespec64 *ts, 565 const struct timezone *tz) 566 { 567 return cap_settime(ts, tz); 568 } 569 570 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 571 { 572 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 573 } 574 575 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 576 { 577 return 0; 578 } 579 580 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 581 struct file *file) 582 { 583 return cap_bprm_creds_from_file(bprm, file); 584 } 585 586 static inline int security_bprm_check(struct linux_binprm *bprm) 587 { 588 return 0; 589 } 590 591 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 592 { 593 } 594 595 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 596 { 597 } 598 599 static inline int security_fs_context_dup(struct fs_context *fc, 600 struct fs_context *src_fc) 601 { 602 return 0; 603 } 604 static inline int security_fs_context_parse_param(struct fs_context *fc, 605 struct fs_parameter *param) 606 { 607 return -ENOPARAM; 608 } 609 610 static inline int security_sb_alloc(struct super_block *sb) 611 { 612 return 0; 613 } 614 615 static inline void security_sb_free(struct super_block *sb) 616 { } 617 618 static inline int security_sb_eat_lsm_opts(char *options, 619 void **mnt_opts) 620 { 621 return 0; 622 } 623 624 static inline int security_sb_remount(struct super_block *sb, 625 void *mnt_opts) 626 { 627 return 0; 628 } 629 630 static inline int security_sb_kern_mount(struct super_block *sb) 631 { 632 return 0; 633 } 634 635 static inline int security_sb_show_options(struct seq_file *m, 636 struct super_block *sb) 637 { 638 return 0; 639 } 640 641 static inline int security_sb_statfs(struct dentry *dentry) 642 { 643 return 0; 644 } 645 646 static inline int security_sb_mount(const char *dev_name, const struct path *path, 647 const char *type, unsigned long flags, 648 void *data) 649 { 650 return 0; 651 } 652 653 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 654 { 655 return 0; 656 } 657 658 static inline int security_sb_pivotroot(const struct path *old_path, 659 const struct path *new_path) 660 { 661 return 0; 662 } 663 664 static inline int security_sb_set_mnt_opts(struct super_block *sb, 665 void *mnt_opts, 666 unsigned long kern_flags, 667 unsigned long *set_kern_flags) 668 { 669 return 0; 670 } 671 672 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 673 struct super_block *newsb, 674 unsigned long kern_flags, 675 unsigned long *set_kern_flags) 676 { 677 return 0; 678 } 679 680 static inline int security_add_mnt_opt(const char *option, const char *val, 681 int len, void **mnt_opts) 682 { 683 return 0; 684 } 685 686 static inline int security_move_mount(const struct path *from_path, 687 const struct path *to_path) 688 { 689 return 0; 690 } 691 692 static inline int security_path_notify(const struct path *path, u64 mask, 693 unsigned int obj_type) 694 { 695 return 0; 696 } 697 698 static inline int security_inode_alloc(struct inode *inode) 699 { 700 return 0; 701 } 702 703 static inline void security_inode_free(struct inode *inode) 704 { } 705 706 static inline int security_dentry_init_security(struct dentry *dentry, 707 int mode, 708 const struct qstr *name, 709 void **ctx, 710 u32 *ctxlen) 711 { 712 return -EOPNOTSUPP; 713 } 714 715 static inline int security_dentry_create_files_as(struct dentry *dentry, 716 int mode, struct qstr *name, 717 const struct cred *old, 718 struct cred *new) 719 { 720 return 0; 721 } 722 723 724 static inline int security_inode_init_security(struct inode *inode, 725 struct inode *dir, 726 const struct qstr *qstr, 727 const initxattrs xattrs, 728 void *fs_data) 729 { 730 return 0; 731 } 732 733 static inline int security_old_inode_init_security(struct inode *inode, 734 struct inode *dir, 735 const struct qstr *qstr, 736 const char **name, 737 void **value, size_t *len) 738 { 739 return -EOPNOTSUPP; 740 } 741 742 static inline int security_inode_create(struct inode *dir, 743 struct dentry *dentry, 744 umode_t mode) 745 { 746 return 0; 747 } 748 749 static inline int security_inode_link(struct dentry *old_dentry, 750 struct inode *dir, 751 struct dentry *new_dentry) 752 { 753 return 0; 754 } 755 756 static inline int security_inode_unlink(struct inode *dir, 757 struct dentry *dentry) 758 { 759 return 0; 760 } 761 762 static inline int security_inode_symlink(struct inode *dir, 763 struct dentry *dentry, 764 const char *old_name) 765 { 766 return 0; 767 } 768 769 static inline int security_inode_mkdir(struct inode *dir, 770 struct dentry *dentry, 771 int mode) 772 { 773 return 0; 774 } 775 776 static inline int security_inode_rmdir(struct inode *dir, 777 struct dentry *dentry) 778 { 779 return 0; 780 } 781 782 static inline int security_inode_mknod(struct inode *dir, 783 struct dentry *dentry, 784 int mode, dev_t dev) 785 { 786 return 0; 787 } 788 789 static inline int security_inode_rename(struct inode *old_dir, 790 struct dentry *old_dentry, 791 struct inode *new_dir, 792 struct dentry *new_dentry, 793 unsigned int flags) 794 { 795 return 0; 796 } 797 798 static inline int security_inode_readlink(struct dentry *dentry) 799 { 800 return 0; 801 } 802 803 static inline int security_inode_follow_link(struct dentry *dentry, 804 struct inode *inode, 805 bool rcu) 806 { 807 return 0; 808 } 809 810 static inline int security_inode_permission(struct inode *inode, int mask) 811 { 812 return 0; 813 } 814 815 static inline int security_inode_setattr(struct dentry *dentry, 816 struct iattr *attr) 817 { 818 return 0; 819 } 820 821 static inline int security_inode_getattr(const struct path *path) 822 { 823 return 0; 824 } 825 826 static inline int security_inode_setxattr(struct dentry *dentry, 827 const char *name, const void *value, size_t size, int flags) 828 { 829 return cap_inode_setxattr(dentry, name, value, size, flags); 830 } 831 832 static inline void security_inode_post_setxattr(struct dentry *dentry, 833 const char *name, const void *value, size_t size, int flags) 834 { } 835 836 static inline int security_inode_getxattr(struct dentry *dentry, 837 const char *name) 838 { 839 return 0; 840 } 841 842 static inline int security_inode_listxattr(struct dentry *dentry) 843 { 844 return 0; 845 } 846 847 static inline int security_inode_removexattr(struct dentry *dentry, 848 const char *name) 849 { 850 return cap_inode_removexattr(dentry, name); 851 } 852 853 static inline int security_inode_need_killpriv(struct dentry *dentry) 854 { 855 return cap_inode_need_killpriv(dentry); 856 } 857 858 static inline int security_inode_killpriv(struct dentry *dentry) 859 { 860 return cap_inode_killpriv(dentry); 861 } 862 863 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 864 { 865 return -EOPNOTSUPP; 866 } 867 868 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 869 { 870 return -EOPNOTSUPP; 871 } 872 873 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 874 { 875 return 0; 876 } 877 878 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 879 { 880 *secid = 0; 881 } 882 883 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 884 { 885 return 0; 886 } 887 888 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 889 struct kernfs_node *kn) 890 { 891 return 0; 892 } 893 894 static inline int security_inode_copy_up_xattr(const char *name) 895 { 896 return -EOPNOTSUPP; 897 } 898 899 static inline int security_file_permission(struct file *file, int mask) 900 { 901 return 0; 902 } 903 904 static inline int security_file_alloc(struct file *file) 905 { 906 return 0; 907 } 908 909 static inline void security_file_free(struct file *file) 910 { } 911 912 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 913 unsigned long arg) 914 { 915 return 0; 916 } 917 918 static inline int security_mmap_file(struct file *file, unsigned long prot, 919 unsigned long flags) 920 { 921 return 0; 922 } 923 924 static inline int security_mmap_addr(unsigned long addr) 925 { 926 return cap_mmap_addr(addr); 927 } 928 929 static inline int security_file_mprotect(struct vm_area_struct *vma, 930 unsigned long reqprot, 931 unsigned long prot) 932 { 933 return 0; 934 } 935 936 static inline int security_file_lock(struct file *file, unsigned int cmd) 937 { 938 return 0; 939 } 940 941 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 942 unsigned long arg) 943 { 944 return 0; 945 } 946 947 static inline void security_file_set_fowner(struct file *file) 948 { 949 return; 950 } 951 952 static inline int security_file_send_sigiotask(struct task_struct *tsk, 953 struct fown_struct *fown, 954 int sig) 955 { 956 return 0; 957 } 958 959 static inline int security_file_receive(struct file *file) 960 { 961 return 0; 962 } 963 964 static inline int security_file_open(struct file *file) 965 { 966 return 0; 967 } 968 969 static inline int security_task_alloc(struct task_struct *task, 970 unsigned long clone_flags) 971 { 972 return 0; 973 } 974 975 static inline void security_task_free(struct task_struct *task) 976 { } 977 978 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 979 { 980 return 0; 981 } 982 983 static inline void security_cred_free(struct cred *cred) 984 { } 985 986 static inline int security_prepare_creds(struct cred *new, 987 const struct cred *old, 988 gfp_t gfp) 989 { 990 return 0; 991 } 992 993 static inline void security_transfer_creds(struct cred *new, 994 const struct cred *old) 995 { 996 } 997 998 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 999 { 1000 return 0; 1001 } 1002 1003 static inline int security_kernel_create_files_as(struct cred *cred, 1004 struct inode *inode) 1005 { 1006 return 0; 1007 } 1008 1009 static inline int security_kernel_module_request(char *kmod_name) 1010 { 1011 return 0; 1012 } 1013 1014 static inline int security_kernel_load_data(enum kernel_load_data_id id) 1015 { 1016 return 0; 1017 } 1018 1019 static inline int security_kernel_read_file(struct file *file, 1020 enum kernel_read_file_id id) 1021 { 1022 return 0; 1023 } 1024 1025 static inline int security_kernel_post_read_file(struct file *file, 1026 char *buf, loff_t size, 1027 enum kernel_read_file_id id) 1028 { 1029 return 0; 1030 } 1031 1032 static inline int security_task_fix_setuid(struct cred *new, 1033 const struct cred *old, 1034 int flags) 1035 { 1036 return cap_task_fix_setuid(new, old, flags); 1037 } 1038 1039 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1040 { 1041 return 0; 1042 } 1043 1044 static inline int security_task_getpgid(struct task_struct *p) 1045 { 1046 return 0; 1047 } 1048 1049 static inline int security_task_getsid(struct task_struct *p) 1050 { 1051 return 0; 1052 } 1053 1054 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1055 { 1056 *secid = 0; 1057 } 1058 1059 static inline int security_task_setnice(struct task_struct *p, int nice) 1060 { 1061 return cap_task_setnice(p, nice); 1062 } 1063 1064 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1065 { 1066 return cap_task_setioprio(p, ioprio); 1067 } 1068 1069 static inline int security_task_getioprio(struct task_struct *p) 1070 { 1071 return 0; 1072 } 1073 1074 static inline int security_task_prlimit(const struct cred *cred, 1075 const struct cred *tcred, 1076 unsigned int flags) 1077 { 1078 return 0; 1079 } 1080 1081 static inline int security_task_setrlimit(struct task_struct *p, 1082 unsigned int resource, 1083 struct rlimit *new_rlim) 1084 { 1085 return 0; 1086 } 1087 1088 static inline int security_task_setscheduler(struct task_struct *p) 1089 { 1090 return cap_task_setscheduler(p); 1091 } 1092 1093 static inline int security_task_getscheduler(struct task_struct *p) 1094 { 1095 return 0; 1096 } 1097 1098 static inline int security_task_movememory(struct task_struct *p) 1099 { 1100 return 0; 1101 } 1102 1103 static inline int security_task_kill(struct task_struct *p, 1104 struct kernel_siginfo *info, int sig, 1105 const struct cred *cred) 1106 { 1107 return 0; 1108 } 1109 1110 static inline int security_task_prctl(int option, unsigned long arg2, 1111 unsigned long arg3, 1112 unsigned long arg4, 1113 unsigned long arg5) 1114 { 1115 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1116 } 1117 1118 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1119 { } 1120 1121 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1122 short flag) 1123 { 1124 return 0; 1125 } 1126 1127 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1128 { 1129 *secid = 0; 1130 } 1131 1132 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1133 { 1134 return 0; 1135 } 1136 1137 static inline void security_msg_msg_free(struct msg_msg *msg) 1138 { } 1139 1140 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1141 { 1142 return 0; 1143 } 1144 1145 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1146 { } 1147 1148 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1149 int msqflg) 1150 { 1151 return 0; 1152 } 1153 1154 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1155 { 1156 return 0; 1157 } 1158 1159 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1160 struct msg_msg *msg, int msqflg) 1161 { 1162 return 0; 1163 } 1164 1165 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1166 struct msg_msg *msg, 1167 struct task_struct *target, 1168 long type, int mode) 1169 { 1170 return 0; 1171 } 1172 1173 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1174 { 1175 return 0; 1176 } 1177 1178 static inline void security_shm_free(struct kern_ipc_perm *shp) 1179 { } 1180 1181 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1182 int shmflg) 1183 { 1184 return 0; 1185 } 1186 1187 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1188 { 1189 return 0; 1190 } 1191 1192 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1193 char __user *shmaddr, int shmflg) 1194 { 1195 return 0; 1196 } 1197 1198 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1199 { 1200 return 0; 1201 } 1202 1203 static inline void security_sem_free(struct kern_ipc_perm *sma) 1204 { } 1205 1206 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1207 { 1208 return 0; 1209 } 1210 1211 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1212 { 1213 return 0; 1214 } 1215 1216 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1217 struct sembuf *sops, unsigned nsops, 1218 int alter) 1219 { 1220 return 0; 1221 } 1222 1223 static inline void security_d_instantiate(struct dentry *dentry, 1224 struct inode *inode) 1225 { } 1226 1227 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1228 char *name, char **value) 1229 { 1230 return -EINVAL; 1231 } 1232 1233 static inline int security_setprocattr(const char *lsm, char *name, 1234 void *value, size_t size) 1235 { 1236 return -EINVAL; 1237 } 1238 1239 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1240 { 1241 return 0; 1242 } 1243 1244 static inline int security_ismaclabel(const char *name) 1245 { 1246 return 0; 1247 } 1248 1249 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1250 { 1251 return -EOPNOTSUPP; 1252 } 1253 1254 static inline int security_secctx_to_secid(const char *secdata, 1255 u32 seclen, 1256 u32 *secid) 1257 { 1258 return -EOPNOTSUPP; 1259 } 1260 1261 static inline void security_release_secctx(char *secdata, u32 seclen) 1262 { 1263 } 1264 1265 static inline void security_inode_invalidate_secctx(struct inode *inode) 1266 { 1267 } 1268 1269 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1270 { 1271 return -EOPNOTSUPP; 1272 } 1273 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1274 { 1275 return -EOPNOTSUPP; 1276 } 1277 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1278 { 1279 return -EOPNOTSUPP; 1280 } 1281 static inline int security_locked_down(enum lockdown_reason what) 1282 { 1283 return 0; 1284 } 1285 #endif /* CONFIG_SECURITY */ 1286 1287 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1288 int security_post_notification(const struct cred *w_cred, 1289 const struct cred *cred, 1290 struct watch_notification *n); 1291 #else 1292 static inline int security_post_notification(const struct cred *w_cred, 1293 const struct cred *cred, 1294 struct watch_notification *n) 1295 { 1296 return 0; 1297 } 1298 #endif 1299 1300 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1301 int security_watch_key(struct key *key); 1302 #else 1303 static inline int security_watch_key(struct key *key) 1304 { 1305 return 0; 1306 } 1307 #endif 1308 1309 #ifdef CONFIG_SECURITY_NETWORK 1310 1311 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1312 int security_unix_may_send(struct socket *sock, struct socket *other); 1313 int security_socket_create(int family, int type, int protocol, int kern); 1314 int security_socket_post_create(struct socket *sock, int family, 1315 int type, int protocol, int kern); 1316 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1317 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1318 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1319 int security_socket_listen(struct socket *sock, int backlog); 1320 int security_socket_accept(struct socket *sock, struct socket *newsock); 1321 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1322 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1323 int size, int flags); 1324 int security_socket_getsockname(struct socket *sock); 1325 int security_socket_getpeername(struct socket *sock); 1326 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1327 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1328 int security_socket_shutdown(struct socket *sock, int how); 1329 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1330 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1331 int __user *optlen, unsigned len); 1332 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1333 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1334 void security_sk_free(struct sock *sk); 1335 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1336 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1337 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1338 void security_sock_graft(struct sock*sk, struct socket *parent); 1339 int security_inet_conn_request(struct sock *sk, 1340 struct sk_buff *skb, struct request_sock *req); 1341 void security_inet_csk_clone(struct sock *newsk, 1342 const struct request_sock *req); 1343 void security_inet_conn_established(struct sock *sk, 1344 struct sk_buff *skb); 1345 int security_secmark_relabel_packet(u32 secid); 1346 void security_secmark_refcount_inc(void); 1347 void security_secmark_refcount_dec(void); 1348 int security_tun_dev_alloc_security(void **security); 1349 void security_tun_dev_free_security(void *security); 1350 int security_tun_dev_create(void); 1351 int security_tun_dev_attach_queue(void *security); 1352 int security_tun_dev_attach(struct sock *sk, void *security); 1353 int security_tun_dev_open(void *security); 1354 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1355 int security_sctp_bind_connect(struct sock *sk, int optname, 1356 struct sockaddr *address, int addrlen); 1357 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1358 struct sock *newsk); 1359 1360 #else /* CONFIG_SECURITY_NETWORK */ 1361 static inline int security_unix_stream_connect(struct sock *sock, 1362 struct sock *other, 1363 struct sock *newsk) 1364 { 1365 return 0; 1366 } 1367 1368 static inline int security_unix_may_send(struct socket *sock, 1369 struct socket *other) 1370 { 1371 return 0; 1372 } 1373 1374 static inline int security_socket_create(int family, int type, 1375 int protocol, int kern) 1376 { 1377 return 0; 1378 } 1379 1380 static inline int security_socket_post_create(struct socket *sock, 1381 int family, 1382 int type, 1383 int protocol, int kern) 1384 { 1385 return 0; 1386 } 1387 1388 static inline int security_socket_socketpair(struct socket *socka, 1389 struct socket *sockb) 1390 { 1391 return 0; 1392 } 1393 1394 static inline int security_socket_bind(struct socket *sock, 1395 struct sockaddr *address, 1396 int addrlen) 1397 { 1398 return 0; 1399 } 1400 1401 static inline int security_socket_connect(struct socket *sock, 1402 struct sockaddr *address, 1403 int addrlen) 1404 { 1405 return 0; 1406 } 1407 1408 static inline int security_socket_listen(struct socket *sock, int backlog) 1409 { 1410 return 0; 1411 } 1412 1413 static inline int security_socket_accept(struct socket *sock, 1414 struct socket *newsock) 1415 { 1416 return 0; 1417 } 1418 1419 static inline int security_socket_sendmsg(struct socket *sock, 1420 struct msghdr *msg, int size) 1421 { 1422 return 0; 1423 } 1424 1425 static inline int security_socket_recvmsg(struct socket *sock, 1426 struct msghdr *msg, int size, 1427 int flags) 1428 { 1429 return 0; 1430 } 1431 1432 static inline int security_socket_getsockname(struct socket *sock) 1433 { 1434 return 0; 1435 } 1436 1437 static inline int security_socket_getpeername(struct socket *sock) 1438 { 1439 return 0; 1440 } 1441 1442 static inline int security_socket_getsockopt(struct socket *sock, 1443 int level, int optname) 1444 { 1445 return 0; 1446 } 1447 1448 static inline int security_socket_setsockopt(struct socket *sock, 1449 int level, int optname) 1450 { 1451 return 0; 1452 } 1453 1454 static inline int security_socket_shutdown(struct socket *sock, int how) 1455 { 1456 return 0; 1457 } 1458 static inline int security_sock_rcv_skb(struct sock *sk, 1459 struct sk_buff *skb) 1460 { 1461 return 0; 1462 } 1463 1464 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1465 int __user *optlen, unsigned len) 1466 { 1467 return -ENOPROTOOPT; 1468 } 1469 1470 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1471 { 1472 return -ENOPROTOOPT; 1473 } 1474 1475 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1476 { 1477 return 0; 1478 } 1479 1480 static inline void security_sk_free(struct sock *sk) 1481 { 1482 } 1483 1484 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1485 { 1486 } 1487 1488 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1489 { 1490 } 1491 1492 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1493 { 1494 } 1495 1496 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1497 { 1498 } 1499 1500 static inline int security_inet_conn_request(struct sock *sk, 1501 struct sk_buff *skb, struct request_sock *req) 1502 { 1503 return 0; 1504 } 1505 1506 static inline void security_inet_csk_clone(struct sock *newsk, 1507 const struct request_sock *req) 1508 { 1509 } 1510 1511 static inline void security_inet_conn_established(struct sock *sk, 1512 struct sk_buff *skb) 1513 { 1514 } 1515 1516 static inline int security_secmark_relabel_packet(u32 secid) 1517 { 1518 return 0; 1519 } 1520 1521 static inline void security_secmark_refcount_inc(void) 1522 { 1523 } 1524 1525 static inline void security_secmark_refcount_dec(void) 1526 { 1527 } 1528 1529 static inline int security_tun_dev_alloc_security(void **security) 1530 { 1531 return 0; 1532 } 1533 1534 static inline void security_tun_dev_free_security(void *security) 1535 { 1536 } 1537 1538 static inline int security_tun_dev_create(void) 1539 { 1540 return 0; 1541 } 1542 1543 static inline int security_tun_dev_attach_queue(void *security) 1544 { 1545 return 0; 1546 } 1547 1548 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1549 { 1550 return 0; 1551 } 1552 1553 static inline int security_tun_dev_open(void *security) 1554 { 1555 return 0; 1556 } 1557 1558 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1559 struct sk_buff *skb) 1560 { 1561 return 0; 1562 } 1563 1564 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1565 struct sockaddr *address, 1566 int addrlen) 1567 { 1568 return 0; 1569 } 1570 1571 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1572 struct sock *sk, 1573 struct sock *newsk) 1574 { 1575 } 1576 #endif /* CONFIG_SECURITY_NETWORK */ 1577 1578 #ifdef CONFIG_SECURITY_INFINIBAND 1579 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1580 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1581 int security_ib_alloc_security(void **sec); 1582 void security_ib_free_security(void *sec); 1583 #else /* CONFIG_SECURITY_INFINIBAND */ 1584 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1585 { 1586 return 0; 1587 } 1588 1589 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1590 { 1591 return 0; 1592 } 1593 1594 static inline int security_ib_alloc_security(void **sec) 1595 { 1596 return 0; 1597 } 1598 1599 static inline void security_ib_free_security(void *sec) 1600 { 1601 } 1602 #endif /* CONFIG_SECURITY_INFINIBAND */ 1603 1604 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1605 1606 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1607 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1608 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1609 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1610 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1611 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1612 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1613 struct xfrm_sec_ctx *polsec, u32 secid); 1614 int security_xfrm_state_delete(struct xfrm_state *x); 1615 void security_xfrm_state_free(struct xfrm_state *x); 1616 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1617 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1618 struct xfrm_policy *xp, 1619 const struct flowi *fl); 1620 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1621 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1622 1623 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1624 1625 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1626 struct xfrm_user_sec_ctx *sec_ctx, 1627 gfp_t gfp) 1628 { 1629 return 0; 1630 } 1631 1632 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1633 { 1634 return 0; 1635 } 1636 1637 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1638 { 1639 } 1640 1641 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1642 { 1643 return 0; 1644 } 1645 1646 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1647 struct xfrm_user_sec_ctx *sec_ctx) 1648 { 1649 return 0; 1650 } 1651 1652 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1653 struct xfrm_sec_ctx *polsec, u32 secid) 1654 { 1655 return 0; 1656 } 1657 1658 static inline void security_xfrm_state_free(struct xfrm_state *x) 1659 { 1660 } 1661 1662 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1663 { 1664 return 0; 1665 } 1666 1667 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1668 { 1669 return 0; 1670 } 1671 1672 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1673 struct xfrm_policy *xp, const struct flowi *fl) 1674 { 1675 return 1; 1676 } 1677 1678 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1679 { 1680 return 0; 1681 } 1682 1683 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1684 { 1685 } 1686 1687 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1688 1689 #ifdef CONFIG_SECURITY_PATH 1690 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1691 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1692 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1693 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1694 unsigned int dev); 1695 int security_path_truncate(const struct path *path); 1696 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1697 const char *old_name); 1698 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1699 struct dentry *new_dentry); 1700 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1701 const struct path *new_dir, struct dentry *new_dentry, 1702 unsigned int flags); 1703 int security_path_chmod(const struct path *path, umode_t mode); 1704 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1705 int security_path_chroot(const struct path *path); 1706 #else /* CONFIG_SECURITY_PATH */ 1707 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1708 { 1709 return 0; 1710 } 1711 1712 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1713 umode_t mode) 1714 { 1715 return 0; 1716 } 1717 1718 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1719 { 1720 return 0; 1721 } 1722 1723 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1724 umode_t mode, unsigned int dev) 1725 { 1726 return 0; 1727 } 1728 1729 static inline int security_path_truncate(const struct path *path) 1730 { 1731 return 0; 1732 } 1733 1734 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1735 const char *old_name) 1736 { 1737 return 0; 1738 } 1739 1740 static inline int security_path_link(struct dentry *old_dentry, 1741 const struct path *new_dir, 1742 struct dentry *new_dentry) 1743 { 1744 return 0; 1745 } 1746 1747 static inline int security_path_rename(const struct path *old_dir, 1748 struct dentry *old_dentry, 1749 const struct path *new_dir, 1750 struct dentry *new_dentry, 1751 unsigned int flags) 1752 { 1753 return 0; 1754 } 1755 1756 static inline int security_path_chmod(const struct path *path, umode_t mode) 1757 { 1758 return 0; 1759 } 1760 1761 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1762 { 1763 return 0; 1764 } 1765 1766 static inline int security_path_chroot(const struct path *path) 1767 { 1768 return 0; 1769 } 1770 #endif /* CONFIG_SECURITY_PATH */ 1771 1772 #ifdef CONFIG_KEYS 1773 #ifdef CONFIG_SECURITY 1774 1775 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1776 void security_key_free(struct key *key); 1777 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1778 enum key_need_perm need_perm); 1779 int security_key_getsecurity(struct key *key, char **_buffer); 1780 1781 #else 1782 1783 static inline int security_key_alloc(struct key *key, 1784 const struct cred *cred, 1785 unsigned long flags) 1786 { 1787 return 0; 1788 } 1789 1790 static inline void security_key_free(struct key *key) 1791 { 1792 } 1793 1794 static inline int security_key_permission(key_ref_t key_ref, 1795 const struct cred *cred, 1796 enum key_need_perm need_perm) 1797 { 1798 return 0; 1799 } 1800 1801 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1802 { 1803 *_buffer = NULL; 1804 return 0; 1805 } 1806 1807 #endif 1808 #endif /* CONFIG_KEYS */ 1809 1810 #ifdef CONFIG_AUDIT 1811 #ifdef CONFIG_SECURITY 1812 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1813 int security_audit_rule_known(struct audit_krule *krule); 1814 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1815 void security_audit_rule_free(void *lsmrule); 1816 1817 #else 1818 1819 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1820 void **lsmrule) 1821 { 1822 return 0; 1823 } 1824 1825 static inline int security_audit_rule_known(struct audit_krule *krule) 1826 { 1827 return 0; 1828 } 1829 1830 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1831 void *lsmrule) 1832 { 1833 return 0; 1834 } 1835 1836 static inline void security_audit_rule_free(void *lsmrule) 1837 { } 1838 1839 #endif /* CONFIG_SECURITY */ 1840 #endif /* CONFIG_AUDIT */ 1841 1842 #ifdef CONFIG_SECURITYFS 1843 1844 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1845 struct dentry *parent, void *data, 1846 const struct file_operations *fops); 1847 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1848 struct dentry *securityfs_create_symlink(const char *name, 1849 struct dentry *parent, 1850 const char *target, 1851 const struct inode_operations *iops); 1852 extern void securityfs_remove(struct dentry *dentry); 1853 1854 #else /* CONFIG_SECURITYFS */ 1855 1856 static inline struct dentry *securityfs_create_dir(const char *name, 1857 struct dentry *parent) 1858 { 1859 return ERR_PTR(-ENODEV); 1860 } 1861 1862 static inline struct dentry *securityfs_create_file(const char *name, 1863 umode_t mode, 1864 struct dentry *parent, 1865 void *data, 1866 const struct file_operations *fops) 1867 { 1868 return ERR_PTR(-ENODEV); 1869 } 1870 1871 static inline struct dentry *securityfs_create_symlink(const char *name, 1872 struct dentry *parent, 1873 const char *target, 1874 const struct inode_operations *iops) 1875 { 1876 return ERR_PTR(-ENODEV); 1877 } 1878 1879 static inline void securityfs_remove(struct dentry *dentry) 1880 {} 1881 1882 #endif 1883 1884 #ifdef CONFIG_BPF_SYSCALL 1885 union bpf_attr; 1886 struct bpf_map; 1887 struct bpf_prog; 1888 struct bpf_prog_aux; 1889 #ifdef CONFIG_SECURITY 1890 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1891 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1892 extern int security_bpf_prog(struct bpf_prog *prog); 1893 extern int security_bpf_map_alloc(struct bpf_map *map); 1894 extern void security_bpf_map_free(struct bpf_map *map); 1895 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1896 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1897 #else 1898 static inline int security_bpf(int cmd, union bpf_attr *attr, 1899 unsigned int size) 1900 { 1901 return 0; 1902 } 1903 1904 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1905 { 1906 return 0; 1907 } 1908 1909 static inline int security_bpf_prog(struct bpf_prog *prog) 1910 { 1911 return 0; 1912 } 1913 1914 static inline int security_bpf_map_alloc(struct bpf_map *map) 1915 { 1916 return 0; 1917 } 1918 1919 static inline void security_bpf_map_free(struct bpf_map *map) 1920 { } 1921 1922 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1923 { 1924 return 0; 1925 } 1926 1927 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1928 { } 1929 #endif /* CONFIG_SECURITY */ 1930 #endif /* CONFIG_BPF_SYSCALL */ 1931 1932 #ifdef CONFIG_PERF_EVENTS 1933 struct perf_event_attr; 1934 struct perf_event; 1935 1936 #ifdef CONFIG_SECURITY 1937 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1938 extern int security_perf_event_alloc(struct perf_event *event); 1939 extern void security_perf_event_free(struct perf_event *event); 1940 extern int security_perf_event_read(struct perf_event *event); 1941 extern int security_perf_event_write(struct perf_event *event); 1942 #else 1943 static inline int security_perf_event_open(struct perf_event_attr *attr, 1944 int type) 1945 { 1946 return 0; 1947 } 1948 1949 static inline int security_perf_event_alloc(struct perf_event *event) 1950 { 1951 return 0; 1952 } 1953 1954 static inline void security_perf_event_free(struct perf_event *event) 1955 { 1956 } 1957 1958 static inline int security_perf_event_read(struct perf_event *event) 1959 { 1960 return 0; 1961 } 1962 1963 static inline int security_perf_event_write(struct perf_event *event) 1964 { 1965 return 0; 1966 } 1967 #endif /* CONFIG_SECURITY */ 1968 #endif /* CONFIG_PERF_EVENTS */ 1969 1970 #endif /* ! __LINUX_SECURITY_H */ 1971