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