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/kernel_read_file.h> 27 #include <linux/key.h> 28 #include <linux/capability.h> 29 #include <linux/fs.h> 30 #include <linux/slab.h> 31 #include <linux/err.h> 32 #include <linux/string.h> 33 #include <linux/mm.h> 34 35 struct linux_binprm; 36 struct cred; 37 struct rlimit; 38 struct kernel_siginfo; 39 struct sembuf; 40 struct kern_ipc_perm; 41 struct audit_context; 42 struct super_block; 43 struct inode; 44 struct dentry; 45 struct file; 46 struct vfsmount; 47 struct path; 48 struct qstr; 49 struct iattr; 50 struct fown_struct; 51 struct file_operations; 52 struct msg_msg; 53 struct xattr; 54 struct kernfs_node; 55 struct xfrm_sec_ctx; 56 struct mm_struct; 57 struct fs_context; 58 struct fs_parameter; 59 enum fs_value_type; 60 struct watch; 61 struct watch_notification; 62 63 /* Default (no) options for the capable function */ 64 #define CAP_OPT_NONE 0x0 65 /* If capable should audit the security request */ 66 #define CAP_OPT_NOAUDIT BIT(1) 67 /* If capable is being called by a setid function */ 68 #define CAP_OPT_INSETID BIT(2) 69 70 /* LSM Agnostic defines for fs_context::lsm_flags */ 71 #define SECURITY_LSM_NATIVE_LABELS 1 72 73 struct ctl_table; 74 struct audit_krule; 75 struct user_namespace; 76 struct timezone; 77 78 enum lsm_event { 79 LSM_POLICY_CHANGE, 80 }; 81 82 /* 83 * These are reasons that can be passed to the security_locked_down() 84 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 85 * ability for userland to modify kernel code) are placed before 86 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 87 * confidentiality (ie, the ability for userland to extract 88 * information from the running kernel that would otherwise be 89 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 90 * 91 * LSM authors should note that the semantics of any given lockdown 92 * reason are not guaranteed to be stable - the same reason may block 93 * one set of features in one kernel release, and a slightly different 94 * set of features in a later kernel release. LSMs that seek to expose 95 * lockdown policy at any level of granularity other than "none", 96 * "integrity" or "confidentiality" are responsible for either 97 * ensuring that they expose a consistent level of functionality to 98 * userland, or ensuring that userland is aware that this is 99 * potentially a moving target. It is easy to misuse this information 100 * in a way that could break userspace. Please be careful not to do 101 * so. 102 * 103 * If you add to this, remember to extend lockdown_reasons in 104 * security/lockdown/lockdown.c. 105 */ 106 enum lockdown_reason { 107 LOCKDOWN_NONE, 108 LOCKDOWN_MODULE_SIGNATURE, 109 LOCKDOWN_DEV_MEM, 110 LOCKDOWN_EFI_TEST, 111 LOCKDOWN_KEXEC, 112 LOCKDOWN_HIBERNATION, 113 LOCKDOWN_PCI_ACCESS, 114 LOCKDOWN_IOPORT, 115 LOCKDOWN_MSR, 116 LOCKDOWN_ACPI_TABLES, 117 LOCKDOWN_PCMCIA_CIS, 118 LOCKDOWN_TIOCSSERIAL, 119 LOCKDOWN_MODULE_PARAMETERS, 120 LOCKDOWN_MMIOTRACE, 121 LOCKDOWN_DEBUGFS, 122 LOCKDOWN_XMON_WR, 123 LOCKDOWN_INTEGRITY_MAX, 124 LOCKDOWN_KCORE, 125 LOCKDOWN_KPROBES, 126 LOCKDOWN_BPF_READ, 127 LOCKDOWN_PERF, 128 LOCKDOWN_TRACEFS, 129 LOCKDOWN_XMON_RW, 130 LOCKDOWN_CONFIDENTIALITY_MAX, 131 }; 132 133 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 134 135 /* These functions are in security/commoncap.c */ 136 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 137 int cap, unsigned int opts); 138 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 139 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 140 extern int cap_ptrace_traceme(struct task_struct *parent); 141 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 142 extern int cap_capset(struct cred *new, const struct cred *old, 143 const kernel_cap_t *effective, 144 const kernel_cap_t *inheritable, 145 const kernel_cap_t *permitted); 146 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 147 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 148 const void *value, size_t size, int flags); 149 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 150 extern int cap_inode_need_killpriv(struct dentry *dentry); 151 extern int cap_inode_killpriv(struct dentry *dentry); 152 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 153 void **buffer, bool alloc); 154 extern int cap_mmap_addr(unsigned long addr); 155 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 156 unsigned long prot, unsigned long flags); 157 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 158 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 159 unsigned long arg4, unsigned long arg5); 160 extern int cap_task_setscheduler(struct task_struct *p); 161 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 162 extern int cap_task_setnice(struct task_struct *p, int nice); 163 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 164 165 struct msghdr; 166 struct sk_buff; 167 struct sock; 168 struct sockaddr; 169 struct socket; 170 struct flowi; 171 struct dst_entry; 172 struct xfrm_selector; 173 struct xfrm_policy; 174 struct xfrm_state; 175 struct xfrm_user_sec_ctx; 176 struct seq_file; 177 struct sctp_endpoint; 178 179 #ifdef CONFIG_MMU 180 extern unsigned long mmap_min_addr; 181 extern unsigned long dac_mmap_min_addr; 182 #else 183 #define mmap_min_addr 0UL 184 #define dac_mmap_min_addr 0UL 185 #endif 186 187 /* 188 * Values used in the task_security_ops calls 189 */ 190 /* setuid or setgid, id0 == uid or gid */ 191 #define LSM_SETID_ID 1 192 193 /* setreuid or setregid, id0 == real, id1 == eff */ 194 #define LSM_SETID_RE 2 195 196 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 197 #define LSM_SETID_RES 4 198 199 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 200 #define LSM_SETID_FS 8 201 202 /* Flags for security_task_prlimit(). */ 203 #define LSM_PRLIMIT_READ 1 204 #define LSM_PRLIMIT_WRITE 2 205 206 /* forward declares to avoid warnings */ 207 struct sched_param; 208 struct request_sock; 209 210 /* bprm->unsafe reasons */ 211 #define LSM_UNSAFE_SHARE 1 212 #define LSM_UNSAFE_PTRACE 2 213 #define LSM_UNSAFE_NO_NEW_PRIVS 4 214 215 #ifdef CONFIG_MMU 216 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 217 void *buffer, size_t *lenp, loff_t *ppos); 218 #endif 219 220 /* security_inode_init_security callback function to write xattrs */ 221 typedef int (*initxattrs) (struct inode *inode, 222 const struct xattr *xattr_array, void *fs_data); 223 224 225 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 226 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 227 #define __data_id_stringify(dummy, str) #str, 228 229 enum kernel_load_data_id { 230 __kernel_read_file_id(__data_id_enumify) 231 }; 232 233 static const char * const kernel_load_data_str[] = { 234 __kernel_read_file_id(__data_id_stringify) 235 }; 236 237 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 238 { 239 if ((unsigned)id >= LOADING_MAX_ID) 240 return kernel_load_data_str[LOADING_UNKNOWN]; 241 242 return kernel_load_data_str[id]; 243 } 244 245 #ifdef CONFIG_SECURITY 246 247 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 248 int register_blocking_lsm_notifier(struct notifier_block *nb); 249 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 250 251 /* prototypes */ 252 extern int security_init(void); 253 extern int early_security_init(void); 254 255 /* Security operations */ 256 int security_binder_set_context_mgr(struct task_struct *mgr); 257 int security_binder_transaction(struct task_struct *from, 258 struct task_struct *to); 259 int security_binder_transfer_binder(struct task_struct *from, 260 struct task_struct *to); 261 int security_binder_transfer_file(struct task_struct *from, 262 struct task_struct *to, struct file *file); 263 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 264 int security_ptrace_traceme(struct task_struct *parent); 265 int security_capget(struct task_struct *target, 266 kernel_cap_t *effective, 267 kernel_cap_t *inheritable, 268 kernel_cap_t *permitted); 269 int security_capset(struct cred *new, const struct cred *old, 270 const kernel_cap_t *effective, 271 const kernel_cap_t *inheritable, 272 const kernel_cap_t *permitted); 273 int security_capable(const struct cred *cred, 274 struct user_namespace *ns, 275 int cap, 276 unsigned int opts); 277 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 278 int security_quota_on(struct dentry *dentry); 279 int security_syslog(int type); 280 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 281 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 282 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 283 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 284 int security_bprm_check(struct linux_binprm *bprm); 285 void security_bprm_committing_creds(struct linux_binprm *bprm); 286 void security_bprm_committed_creds(struct linux_binprm *bprm); 287 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 288 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 289 int security_sb_alloc(struct super_block *sb); 290 void security_sb_free(struct super_block *sb); 291 void security_free_mnt_opts(void **mnt_opts); 292 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 293 int security_sb_remount(struct super_block *sb, void *mnt_opts); 294 int security_sb_kern_mount(struct super_block *sb); 295 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 296 int security_sb_statfs(struct dentry *dentry); 297 int security_sb_mount(const char *dev_name, const struct path *path, 298 const char *type, unsigned long flags, void *data); 299 int security_sb_umount(struct vfsmount *mnt, int flags); 300 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 301 int security_sb_set_mnt_opts(struct super_block *sb, 302 void *mnt_opts, 303 unsigned long kern_flags, 304 unsigned long *set_kern_flags); 305 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 306 struct super_block *newsb, 307 unsigned long kern_flags, 308 unsigned long *set_kern_flags); 309 int security_add_mnt_opt(const char *option, const char *val, 310 int len, void **mnt_opts); 311 int security_move_mount(const struct path *from_path, const struct path *to_path); 312 int security_dentry_init_security(struct dentry *dentry, int mode, 313 const struct qstr *name, void **ctx, 314 u32 *ctxlen); 315 int security_dentry_create_files_as(struct dentry *dentry, int mode, 316 struct qstr *name, 317 const struct cred *old, 318 struct cred *new); 319 int security_path_notify(const struct path *path, u64 mask, 320 unsigned int obj_type); 321 int security_inode_alloc(struct inode *inode); 322 void security_inode_free(struct inode *inode); 323 int security_inode_init_security(struct inode *inode, struct inode *dir, 324 const struct qstr *qstr, 325 initxattrs initxattrs, void *fs_data); 326 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 327 const struct qstr *qstr, const char **name, 328 void **value, size_t *len); 329 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 330 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 331 struct dentry *new_dentry); 332 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 333 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 334 const char *old_name); 335 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 336 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 337 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 338 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 339 struct inode *new_dir, struct dentry *new_dentry, 340 unsigned int flags); 341 int security_inode_readlink(struct dentry *dentry); 342 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 343 bool rcu); 344 int security_inode_permission(struct inode *inode, int mask); 345 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 346 int security_inode_getattr(const struct path *path); 347 int security_inode_setxattr(struct dentry *dentry, const char *name, 348 const void *value, size_t size, int flags); 349 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 350 const void *value, size_t size, int flags); 351 int security_inode_getxattr(struct dentry *dentry, const char *name); 352 int security_inode_listxattr(struct dentry *dentry); 353 int security_inode_removexattr(struct dentry *dentry, const char *name); 354 int security_inode_need_killpriv(struct dentry *dentry); 355 int security_inode_killpriv(struct dentry *dentry); 356 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 357 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 358 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 359 void security_inode_getsecid(struct inode *inode, u32 *secid); 360 int security_inode_copy_up(struct dentry *src, struct cred **new); 361 int security_inode_copy_up_xattr(const char *name); 362 int security_kernfs_init_security(struct kernfs_node *kn_dir, 363 struct kernfs_node *kn); 364 int security_file_permission(struct file *file, int mask); 365 int security_file_alloc(struct file *file); 366 void security_file_free(struct file *file); 367 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 368 int security_mmap_file(struct file *file, unsigned long prot, 369 unsigned long flags); 370 int security_mmap_addr(unsigned long addr); 371 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 372 unsigned long prot); 373 int security_file_lock(struct file *file, unsigned int cmd); 374 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 375 void security_file_set_fowner(struct file *file); 376 int security_file_send_sigiotask(struct task_struct *tsk, 377 struct fown_struct *fown, int sig); 378 int security_file_receive(struct file *file); 379 int security_file_open(struct file *file); 380 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 381 void security_task_free(struct task_struct *task); 382 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 383 void security_cred_free(struct cred *cred); 384 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 385 void security_transfer_creds(struct cred *new, const struct cred *old); 386 void security_cred_getsecid(const struct cred *c, u32 *secid); 387 int security_kernel_act_as(struct cred *new, u32 secid); 388 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 389 int security_kernel_module_request(char *kmod_name); 390 int security_kernel_load_data(enum kernel_load_data_id id); 391 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 392 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 393 enum kernel_read_file_id id); 394 int security_task_fix_setuid(struct cred *new, const struct cred *old, 395 int flags); 396 int security_task_fix_setgid(struct cred *new, const struct cred *old, 397 int flags); 398 int security_task_setpgid(struct task_struct *p, pid_t pgid); 399 int security_task_getpgid(struct task_struct *p); 400 int security_task_getsid(struct task_struct *p); 401 void security_task_getsecid(struct task_struct *p, u32 *secid); 402 int security_task_setnice(struct task_struct *p, int nice); 403 int security_task_setioprio(struct task_struct *p, int ioprio); 404 int security_task_getioprio(struct task_struct *p); 405 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 406 unsigned int flags); 407 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 408 struct rlimit *new_rlim); 409 int security_task_setscheduler(struct task_struct *p); 410 int security_task_getscheduler(struct task_struct *p); 411 int security_task_movememory(struct task_struct *p); 412 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 413 int sig, const struct cred *cred); 414 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 415 unsigned long arg4, unsigned long arg5); 416 void security_task_to_inode(struct task_struct *p, struct inode *inode); 417 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 418 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 419 int security_msg_msg_alloc(struct msg_msg *msg); 420 void security_msg_msg_free(struct msg_msg *msg); 421 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 422 void security_msg_queue_free(struct kern_ipc_perm *msq); 423 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 424 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 425 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 426 struct msg_msg *msg, int msqflg); 427 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 428 struct task_struct *target, long type, int mode); 429 int security_shm_alloc(struct kern_ipc_perm *shp); 430 void security_shm_free(struct kern_ipc_perm *shp); 431 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 432 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 433 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 434 int security_sem_alloc(struct kern_ipc_perm *sma); 435 void security_sem_free(struct kern_ipc_perm *sma); 436 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 437 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 438 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 439 unsigned nsops, int alter); 440 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 441 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 442 char **value); 443 int security_setprocattr(const char *lsm, const char *name, void *value, 444 size_t size); 445 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 446 int security_ismaclabel(const char *name); 447 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 448 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 449 void security_release_secctx(char *secdata, u32 seclen); 450 void security_inode_invalidate_secctx(struct inode *inode); 451 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 452 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 453 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 454 int security_locked_down(enum lockdown_reason what); 455 #else /* CONFIG_SECURITY */ 456 457 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 458 { 459 return 0; 460 } 461 462 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 463 { 464 return 0; 465 } 466 467 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 468 { 469 return 0; 470 } 471 472 static inline void security_free_mnt_opts(void **mnt_opts) 473 { 474 } 475 476 /* 477 * This is the default capabilities functionality. Most of these functions 478 * are just stubbed out, but a few must call the proper capable code. 479 */ 480 481 static inline int security_init(void) 482 { 483 return 0; 484 } 485 486 static inline int early_security_init(void) 487 { 488 return 0; 489 } 490 491 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 492 { 493 return 0; 494 } 495 496 static inline int security_binder_transaction(struct task_struct *from, 497 struct task_struct *to) 498 { 499 return 0; 500 } 501 502 static inline int security_binder_transfer_binder(struct task_struct *from, 503 struct task_struct *to) 504 { 505 return 0; 506 } 507 508 static inline int security_binder_transfer_file(struct task_struct *from, 509 struct task_struct *to, 510 struct file *file) 511 { 512 return 0; 513 } 514 515 static inline int security_ptrace_access_check(struct task_struct *child, 516 unsigned int mode) 517 { 518 return cap_ptrace_access_check(child, mode); 519 } 520 521 static inline int security_ptrace_traceme(struct task_struct *parent) 522 { 523 return cap_ptrace_traceme(parent); 524 } 525 526 static inline int security_capget(struct task_struct *target, 527 kernel_cap_t *effective, 528 kernel_cap_t *inheritable, 529 kernel_cap_t *permitted) 530 { 531 return cap_capget(target, effective, inheritable, permitted); 532 } 533 534 static inline int security_capset(struct cred *new, 535 const struct cred *old, 536 const kernel_cap_t *effective, 537 const kernel_cap_t *inheritable, 538 const kernel_cap_t *permitted) 539 { 540 return cap_capset(new, old, effective, inheritable, permitted); 541 } 542 543 static inline int security_capable(const struct cred *cred, 544 struct user_namespace *ns, 545 int cap, 546 unsigned int opts) 547 { 548 return cap_capable(cred, ns, cap, opts); 549 } 550 551 static inline int security_quotactl(int cmds, int type, int id, 552 struct super_block *sb) 553 { 554 return 0; 555 } 556 557 static inline int security_quota_on(struct dentry *dentry) 558 { 559 return 0; 560 } 561 562 static inline int security_syslog(int type) 563 { 564 return 0; 565 } 566 567 static inline int security_settime64(const struct timespec64 *ts, 568 const struct timezone *tz) 569 { 570 return cap_settime(ts, tz); 571 } 572 573 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 574 { 575 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 576 } 577 578 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 579 { 580 return 0; 581 } 582 583 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 584 struct file *file) 585 { 586 return cap_bprm_creds_from_file(bprm, file); 587 } 588 589 static inline int security_bprm_check(struct linux_binprm *bprm) 590 { 591 return 0; 592 } 593 594 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 595 { 596 } 597 598 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 599 { 600 } 601 602 static inline int security_fs_context_dup(struct fs_context *fc, 603 struct fs_context *src_fc) 604 { 605 return 0; 606 } 607 static inline int security_fs_context_parse_param(struct fs_context *fc, 608 struct fs_parameter *param) 609 { 610 return -ENOPARAM; 611 } 612 613 static inline int security_sb_alloc(struct super_block *sb) 614 { 615 return 0; 616 } 617 618 static inline void security_sb_free(struct super_block *sb) 619 { } 620 621 static inline int security_sb_eat_lsm_opts(char *options, 622 void **mnt_opts) 623 { 624 return 0; 625 } 626 627 static inline int security_sb_remount(struct super_block *sb, 628 void *mnt_opts) 629 { 630 return 0; 631 } 632 633 static inline int security_sb_kern_mount(struct super_block *sb) 634 { 635 return 0; 636 } 637 638 static inline int security_sb_show_options(struct seq_file *m, 639 struct super_block *sb) 640 { 641 return 0; 642 } 643 644 static inline int security_sb_statfs(struct dentry *dentry) 645 { 646 return 0; 647 } 648 649 static inline int security_sb_mount(const char *dev_name, const struct path *path, 650 const char *type, unsigned long flags, 651 void *data) 652 { 653 return 0; 654 } 655 656 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 657 { 658 return 0; 659 } 660 661 static inline int security_sb_pivotroot(const struct path *old_path, 662 const struct path *new_path) 663 { 664 return 0; 665 } 666 667 static inline int security_sb_set_mnt_opts(struct super_block *sb, 668 void *mnt_opts, 669 unsigned long kern_flags, 670 unsigned long *set_kern_flags) 671 { 672 return 0; 673 } 674 675 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 676 struct super_block *newsb, 677 unsigned long kern_flags, 678 unsigned long *set_kern_flags) 679 { 680 return 0; 681 } 682 683 static inline int security_add_mnt_opt(const char *option, const char *val, 684 int len, void **mnt_opts) 685 { 686 return 0; 687 } 688 689 static inline int security_move_mount(const struct path *from_path, 690 const struct path *to_path) 691 { 692 return 0; 693 } 694 695 static inline int security_path_notify(const struct path *path, u64 mask, 696 unsigned int obj_type) 697 { 698 return 0; 699 } 700 701 static inline int security_inode_alloc(struct inode *inode) 702 { 703 return 0; 704 } 705 706 static inline void security_inode_free(struct inode *inode) 707 { } 708 709 static inline int security_dentry_init_security(struct dentry *dentry, 710 int mode, 711 const struct qstr *name, 712 void **ctx, 713 u32 *ctxlen) 714 { 715 return -EOPNOTSUPP; 716 } 717 718 static inline int security_dentry_create_files_as(struct dentry *dentry, 719 int mode, struct qstr *name, 720 const struct cred *old, 721 struct cred *new) 722 { 723 return 0; 724 } 725 726 727 static inline int security_inode_init_security(struct inode *inode, 728 struct inode *dir, 729 const struct qstr *qstr, 730 const initxattrs xattrs, 731 void *fs_data) 732 { 733 return 0; 734 } 735 736 static inline int security_old_inode_init_security(struct inode *inode, 737 struct inode *dir, 738 const struct qstr *qstr, 739 const char **name, 740 void **value, size_t *len) 741 { 742 return -EOPNOTSUPP; 743 } 744 745 static inline int security_inode_create(struct inode *dir, 746 struct dentry *dentry, 747 umode_t mode) 748 { 749 return 0; 750 } 751 752 static inline int security_inode_link(struct dentry *old_dentry, 753 struct inode *dir, 754 struct dentry *new_dentry) 755 { 756 return 0; 757 } 758 759 static inline int security_inode_unlink(struct inode *dir, 760 struct dentry *dentry) 761 { 762 return 0; 763 } 764 765 static inline int security_inode_symlink(struct inode *dir, 766 struct dentry *dentry, 767 const char *old_name) 768 { 769 return 0; 770 } 771 772 static inline int security_inode_mkdir(struct inode *dir, 773 struct dentry *dentry, 774 int mode) 775 { 776 return 0; 777 } 778 779 static inline int security_inode_rmdir(struct inode *dir, 780 struct dentry *dentry) 781 { 782 return 0; 783 } 784 785 static inline int security_inode_mknod(struct inode *dir, 786 struct dentry *dentry, 787 int mode, dev_t dev) 788 { 789 return 0; 790 } 791 792 static inline int security_inode_rename(struct inode *old_dir, 793 struct dentry *old_dentry, 794 struct inode *new_dir, 795 struct dentry *new_dentry, 796 unsigned int flags) 797 { 798 return 0; 799 } 800 801 static inline int security_inode_readlink(struct dentry *dentry) 802 { 803 return 0; 804 } 805 806 static inline int security_inode_follow_link(struct dentry *dentry, 807 struct inode *inode, 808 bool rcu) 809 { 810 return 0; 811 } 812 813 static inline int security_inode_permission(struct inode *inode, int mask) 814 { 815 return 0; 816 } 817 818 static inline int security_inode_setattr(struct dentry *dentry, 819 struct iattr *attr) 820 { 821 return 0; 822 } 823 824 static inline int security_inode_getattr(const struct path *path) 825 { 826 return 0; 827 } 828 829 static inline int security_inode_setxattr(struct dentry *dentry, 830 const char *name, const void *value, size_t size, int flags) 831 { 832 return cap_inode_setxattr(dentry, name, value, size, flags); 833 } 834 835 static inline void security_inode_post_setxattr(struct dentry *dentry, 836 const char *name, const void *value, size_t size, int flags) 837 { } 838 839 static inline int security_inode_getxattr(struct dentry *dentry, 840 const char *name) 841 { 842 return 0; 843 } 844 845 static inline int security_inode_listxattr(struct dentry *dentry) 846 { 847 return 0; 848 } 849 850 static inline int security_inode_removexattr(struct dentry *dentry, 851 const char *name) 852 { 853 return cap_inode_removexattr(dentry, name); 854 } 855 856 static inline int security_inode_need_killpriv(struct dentry *dentry) 857 { 858 return cap_inode_need_killpriv(dentry); 859 } 860 861 static inline int security_inode_killpriv(struct dentry *dentry) 862 { 863 return cap_inode_killpriv(dentry); 864 } 865 866 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 867 { 868 return -EOPNOTSUPP; 869 } 870 871 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 872 { 873 return -EOPNOTSUPP; 874 } 875 876 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 877 { 878 return 0; 879 } 880 881 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 882 { 883 *secid = 0; 884 } 885 886 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 887 { 888 return 0; 889 } 890 891 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 892 struct kernfs_node *kn) 893 { 894 return 0; 895 } 896 897 static inline int security_inode_copy_up_xattr(const char *name) 898 { 899 return -EOPNOTSUPP; 900 } 901 902 static inline int security_file_permission(struct file *file, int mask) 903 { 904 return 0; 905 } 906 907 static inline int security_file_alloc(struct file *file) 908 { 909 return 0; 910 } 911 912 static inline void security_file_free(struct file *file) 913 { } 914 915 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 916 unsigned long arg) 917 { 918 return 0; 919 } 920 921 static inline int security_mmap_file(struct file *file, unsigned long prot, 922 unsigned long flags) 923 { 924 return 0; 925 } 926 927 static inline int security_mmap_addr(unsigned long addr) 928 { 929 return cap_mmap_addr(addr); 930 } 931 932 static inline int security_file_mprotect(struct vm_area_struct *vma, 933 unsigned long reqprot, 934 unsigned long prot) 935 { 936 return 0; 937 } 938 939 static inline int security_file_lock(struct file *file, unsigned int cmd) 940 { 941 return 0; 942 } 943 944 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 945 unsigned long arg) 946 { 947 return 0; 948 } 949 950 static inline void security_file_set_fowner(struct file *file) 951 { 952 return; 953 } 954 955 static inline int security_file_send_sigiotask(struct task_struct *tsk, 956 struct fown_struct *fown, 957 int sig) 958 { 959 return 0; 960 } 961 962 static inline int security_file_receive(struct file *file) 963 { 964 return 0; 965 } 966 967 static inline int security_file_open(struct file *file) 968 { 969 return 0; 970 } 971 972 static inline int security_task_alloc(struct task_struct *task, 973 unsigned long clone_flags) 974 { 975 return 0; 976 } 977 978 static inline void security_task_free(struct task_struct *task) 979 { } 980 981 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 982 { 983 return 0; 984 } 985 986 static inline void security_cred_free(struct cred *cred) 987 { } 988 989 static inline int security_prepare_creds(struct cred *new, 990 const struct cred *old, 991 gfp_t gfp) 992 { 993 return 0; 994 } 995 996 static inline void security_transfer_creds(struct cred *new, 997 const struct cred *old) 998 { 999 } 1000 1001 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1002 { 1003 return 0; 1004 } 1005 1006 static inline int security_kernel_create_files_as(struct cred *cred, 1007 struct inode *inode) 1008 { 1009 return 0; 1010 } 1011 1012 static inline int security_kernel_module_request(char *kmod_name) 1013 { 1014 return 0; 1015 } 1016 1017 static inline int security_kernel_load_data(enum kernel_load_data_id id) 1018 { 1019 return 0; 1020 } 1021 1022 static inline int security_kernel_read_file(struct file *file, 1023 enum kernel_read_file_id id) 1024 { 1025 return 0; 1026 } 1027 1028 static inline int security_kernel_post_read_file(struct file *file, 1029 char *buf, loff_t size, 1030 enum kernel_read_file_id id) 1031 { 1032 return 0; 1033 } 1034 1035 static inline int security_task_fix_setuid(struct cred *new, 1036 const struct cred *old, 1037 int flags) 1038 { 1039 return cap_task_fix_setuid(new, old, flags); 1040 } 1041 1042 static inline int security_task_fix_setgid(struct cred *new, 1043 const struct cred *old, 1044 int flags) 1045 { 1046 return 0; 1047 } 1048 1049 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1050 { 1051 return 0; 1052 } 1053 1054 static inline int security_task_getpgid(struct task_struct *p) 1055 { 1056 return 0; 1057 } 1058 1059 static inline int security_task_getsid(struct task_struct *p) 1060 { 1061 return 0; 1062 } 1063 1064 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1065 { 1066 *secid = 0; 1067 } 1068 1069 static inline int security_task_setnice(struct task_struct *p, int nice) 1070 { 1071 return cap_task_setnice(p, nice); 1072 } 1073 1074 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1075 { 1076 return cap_task_setioprio(p, ioprio); 1077 } 1078 1079 static inline int security_task_getioprio(struct task_struct *p) 1080 { 1081 return 0; 1082 } 1083 1084 static inline int security_task_prlimit(const struct cred *cred, 1085 const struct cred *tcred, 1086 unsigned int flags) 1087 { 1088 return 0; 1089 } 1090 1091 static inline int security_task_setrlimit(struct task_struct *p, 1092 unsigned int resource, 1093 struct rlimit *new_rlim) 1094 { 1095 return 0; 1096 } 1097 1098 static inline int security_task_setscheduler(struct task_struct *p) 1099 { 1100 return cap_task_setscheduler(p); 1101 } 1102 1103 static inline int security_task_getscheduler(struct task_struct *p) 1104 { 1105 return 0; 1106 } 1107 1108 static inline int security_task_movememory(struct task_struct *p) 1109 { 1110 return 0; 1111 } 1112 1113 static inline int security_task_kill(struct task_struct *p, 1114 struct kernel_siginfo *info, int sig, 1115 const struct cred *cred) 1116 { 1117 return 0; 1118 } 1119 1120 static inline int security_task_prctl(int option, unsigned long arg2, 1121 unsigned long arg3, 1122 unsigned long arg4, 1123 unsigned long arg5) 1124 { 1125 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1126 } 1127 1128 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1129 { } 1130 1131 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1132 short flag) 1133 { 1134 return 0; 1135 } 1136 1137 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1138 { 1139 *secid = 0; 1140 } 1141 1142 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1143 { 1144 return 0; 1145 } 1146 1147 static inline void security_msg_msg_free(struct msg_msg *msg) 1148 { } 1149 1150 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1151 { 1152 return 0; 1153 } 1154 1155 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1156 { } 1157 1158 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1159 int msqflg) 1160 { 1161 return 0; 1162 } 1163 1164 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1165 { 1166 return 0; 1167 } 1168 1169 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1170 struct msg_msg *msg, int msqflg) 1171 { 1172 return 0; 1173 } 1174 1175 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1176 struct msg_msg *msg, 1177 struct task_struct *target, 1178 long type, int mode) 1179 { 1180 return 0; 1181 } 1182 1183 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1184 { 1185 return 0; 1186 } 1187 1188 static inline void security_shm_free(struct kern_ipc_perm *shp) 1189 { } 1190 1191 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1192 int shmflg) 1193 { 1194 return 0; 1195 } 1196 1197 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1198 { 1199 return 0; 1200 } 1201 1202 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1203 char __user *shmaddr, int shmflg) 1204 { 1205 return 0; 1206 } 1207 1208 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1209 { 1210 return 0; 1211 } 1212 1213 static inline void security_sem_free(struct kern_ipc_perm *sma) 1214 { } 1215 1216 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1217 { 1218 return 0; 1219 } 1220 1221 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1222 { 1223 return 0; 1224 } 1225 1226 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1227 struct sembuf *sops, unsigned nsops, 1228 int alter) 1229 { 1230 return 0; 1231 } 1232 1233 static inline void security_d_instantiate(struct dentry *dentry, 1234 struct inode *inode) 1235 { } 1236 1237 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1238 char *name, char **value) 1239 { 1240 return -EINVAL; 1241 } 1242 1243 static inline int security_setprocattr(const char *lsm, char *name, 1244 void *value, size_t size) 1245 { 1246 return -EINVAL; 1247 } 1248 1249 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1250 { 1251 return 0; 1252 } 1253 1254 static inline int security_ismaclabel(const char *name) 1255 { 1256 return 0; 1257 } 1258 1259 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1260 { 1261 return -EOPNOTSUPP; 1262 } 1263 1264 static inline int security_secctx_to_secid(const char *secdata, 1265 u32 seclen, 1266 u32 *secid) 1267 { 1268 return -EOPNOTSUPP; 1269 } 1270 1271 static inline void security_release_secctx(char *secdata, u32 seclen) 1272 { 1273 } 1274 1275 static inline void security_inode_invalidate_secctx(struct inode *inode) 1276 { 1277 } 1278 1279 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1280 { 1281 return -EOPNOTSUPP; 1282 } 1283 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1284 { 1285 return -EOPNOTSUPP; 1286 } 1287 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1288 { 1289 return -EOPNOTSUPP; 1290 } 1291 static inline int security_locked_down(enum lockdown_reason what) 1292 { 1293 return 0; 1294 } 1295 #endif /* CONFIG_SECURITY */ 1296 1297 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1298 int security_post_notification(const struct cred *w_cred, 1299 const struct cred *cred, 1300 struct watch_notification *n); 1301 #else 1302 static inline int security_post_notification(const struct cred *w_cred, 1303 const struct cred *cred, 1304 struct watch_notification *n) 1305 { 1306 return 0; 1307 } 1308 #endif 1309 1310 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1311 int security_watch_key(struct key *key); 1312 #else 1313 static inline int security_watch_key(struct key *key) 1314 { 1315 return 0; 1316 } 1317 #endif 1318 1319 #ifdef CONFIG_SECURITY_NETWORK 1320 1321 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1322 int security_unix_may_send(struct socket *sock, struct socket *other); 1323 int security_socket_create(int family, int type, int protocol, int kern); 1324 int security_socket_post_create(struct socket *sock, int family, 1325 int type, int protocol, int kern); 1326 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1327 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1328 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1329 int security_socket_listen(struct socket *sock, int backlog); 1330 int security_socket_accept(struct socket *sock, struct socket *newsock); 1331 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1332 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1333 int size, int flags); 1334 int security_socket_getsockname(struct socket *sock); 1335 int security_socket_getpeername(struct socket *sock); 1336 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1337 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1338 int security_socket_shutdown(struct socket *sock, int how); 1339 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1340 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1341 int __user *optlen, unsigned len); 1342 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1343 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1344 void security_sk_free(struct sock *sk); 1345 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1346 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1347 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1348 void security_sock_graft(struct sock*sk, struct socket *parent); 1349 int security_inet_conn_request(struct sock *sk, 1350 struct sk_buff *skb, struct request_sock *req); 1351 void security_inet_csk_clone(struct sock *newsk, 1352 const struct request_sock *req); 1353 void security_inet_conn_established(struct sock *sk, 1354 struct sk_buff *skb); 1355 int security_secmark_relabel_packet(u32 secid); 1356 void security_secmark_refcount_inc(void); 1357 void security_secmark_refcount_dec(void); 1358 int security_tun_dev_alloc_security(void **security); 1359 void security_tun_dev_free_security(void *security); 1360 int security_tun_dev_create(void); 1361 int security_tun_dev_attach_queue(void *security); 1362 int security_tun_dev_attach(struct sock *sk, void *security); 1363 int security_tun_dev_open(void *security); 1364 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1365 int security_sctp_bind_connect(struct sock *sk, int optname, 1366 struct sockaddr *address, int addrlen); 1367 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1368 struct sock *newsk); 1369 1370 #else /* CONFIG_SECURITY_NETWORK */ 1371 static inline int security_unix_stream_connect(struct sock *sock, 1372 struct sock *other, 1373 struct sock *newsk) 1374 { 1375 return 0; 1376 } 1377 1378 static inline int security_unix_may_send(struct socket *sock, 1379 struct socket *other) 1380 { 1381 return 0; 1382 } 1383 1384 static inline int security_socket_create(int family, int type, 1385 int protocol, int kern) 1386 { 1387 return 0; 1388 } 1389 1390 static inline int security_socket_post_create(struct socket *sock, 1391 int family, 1392 int type, 1393 int protocol, int kern) 1394 { 1395 return 0; 1396 } 1397 1398 static inline int security_socket_socketpair(struct socket *socka, 1399 struct socket *sockb) 1400 { 1401 return 0; 1402 } 1403 1404 static inline int security_socket_bind(struct socket *sock, 1405 struct sockaddr *address, 1406 int addrlen) 1407 { 1408 return 0; 1409 } 1410 1411 static inline int security_socket_connect(struct socket *sock, 1412 struct sockaddr *address, 1413 int addrlen) 1414 { 1415 return 0; 1416 } 1417 1418 static inline int security_socket_listen(struct socket *sock, int backlog) 1419 { 1420 return 0; 1421 } 1422 1423 static inline int security_socket_accept(struct socket *sock, 1424 struct socket *newsock) 1425 { 1426 return 0; 1427 } 1428 1429 static inline int security_socket_sendmsg(struct socket *sock, 1430 struct msghdr *msg, int size) 1431 { 1432 return 0; 1433 } 1434 1435 static inline int security_socket_recvmsg(struct socket *sock, 1436 struct msghdr *msg, int size, 1437 int flags) 1438 { 1439 return 0; 1440 } 1441 1442 static inline int security_socket_getsockname(struct socket *sock) 1443 { 1444 return 0; 1445 } 1446 1447 static inline int security_socket_getpeername(struct socket *sock) 1448 { 1449 return 0; 1450 } 1451 1452 static inline int security_socket_getsockopt(struct socket *sock, 1453 int level, int optname) 1454 { 1455 return 0; 1456 } 1457 1458 static inline int security_socket_setsockopt(struct socket *sock, 1459 int level, int optname) 1460 { 1461 return 0; 1462 } 1463 1464 static inline int security_socket_shutdown(struct socket *sock, int how) 1465 { 1466 return 0; 1467 } 1468 static inline int security_sock_rcv_skb(struct sock *sk, 1469 struct sk_buff *skb) 1470 { 1471 return 0; 1472 } 1473 1474 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1475 int __user *optlen, unsigned len) 1476 { 1477 return -ENOPROTOOPT; 1478 } 1479 1480 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1481 { 1482 return -ENOPROTOOPT; 1483 } 1484 1485 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1486 { 1487 return 0; 1488 } 1489 1490 static inline void security_sk_free(struct sock *sk) 1491 { 1492 } 1493 1494 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1495 { 1496 } 1497 1498 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1499 { 1500 } 1501 1502 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1503 { 1504 } 1505 1506 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1507 { 1508 } 1509 1510 static inline int security_inet_conn_request(struct sock *sk, 1511 struct sk_buff *skb, struct request_sock *req) 1512 { 1513 return 0; 1514 } 1515 1516 static inline void security_inet_csk_clone(struct sock *newsk, 1517 const struct request_sock *req) 1518 { 1519 } 1520 1521 static inline void security_inet_conn_established(struct sock *sk, 1522 struct sk_buff *skb) 1523 { 1524 } 1525 1526 static inline int security_secmark_relabel_packet(u32 secid) 1527 { 1528 return 0; 1529 } 1530 1531 static inline void security_secmark_refcount_inc(void) 1532 { 1533 } 1534 1535 static inline void security_secmark_refcount_dec(void) 1536 { 1537 } 1538 1539 static inline int security_tun_dev_alloc_security(void **security) 1540 { 1541 return 0; 1542 } 1543 1544 static inline void security_tun_dev_free_security(void *security) 1545 { 1546 } 1547 1548 static inline int security_tun_dev_create(void) 1549 { 1550 return 0; 1551 } 1552 1553 static inline int security_tun_dev_attach_queue(void *security) 1554 { 1555 return 0; 1556 } 1557 1558 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1559 { 1560 return 0; 1561 } 1562 1563 static inline int security_tun_dev_open(void *security) 1564 { 1565 return 0; 1566 } 1567 1568 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1569 struct sk_buff *skb) 1570 { 1571 return 0; 1572 } 1573 1574 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1575 struct sockaddr *address, 1576 int addrlen) 1577 { 1578 return 0; 1579 } 1580 1581 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1582 struct sock *sk, 1583 struct sock *newsk) 1584 { 1585 } 1586 #endif /* CONFIG_SECURITY_NETWORK */ 1587 1588 #ifdef CONFIG_SECURITY_INFINIBAND 1589 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1590 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1591 int security_ib_alloc_security(void **sec); 1592 void security_ib_free_security(void *sec); 1593 #else /* CONFIG_SECURITY_INFINIBAND */ 1594 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1595 { 1596 return 0; 1597 } 1598 1599 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1600 { 1601 return 0; 1602 } 1603 1604 static inline int security_ib_alloc_security(void **sec) 1605 { 1606 return 0; 1607 } 1608 1609 static inline void security_ib_free_security(void *sec) 1610 { 1611 } 1612 #endif /* CONFIG_SECURITY_INFINIBAND */ 1613 1614 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1615 1616 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1617 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1618 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1619 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1620 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1621 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1622 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1623 struct xfrm_sec_ctx *polsec, u32 secid); 1624 int security_xfrm_state_delete(struct xfrm_state *x); 1625 void security_xfrm_state_free(struct xfrm_state *x); 1626 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1627 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1628 struct xfrm_policy *xp, 1629 const struct flowi *fl); 1630 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1631 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1632 1633 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1634 1635 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1636 struct xfrm_user_sec_ctx *sec_ctx, 1637 gfp_t gfp) 1638 { 1639 return 0; 1640 } 1641 1642 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1643 { 1644 return 0; 1645 } 1646 1647 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1648 { 1649 } 1650 1651 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1652 { 1653 return 0; 1654 } 1655 1656 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1657 struct xfrm_user_sec_ctx *sec_ctx) 1658 { 1659 return 0; 1660 } 1661 1662 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1663 struct xfrm_sec_ctx *polsec, u32 secid) 1664 { 1665 return 0; 1666 } 1667 1668 static inline void security_xfrm_state_free(struct xfrm_state *x) 1669 { 1670 } 1671 1672 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1673 { 1674 return 0; 1675 } 1676 1677 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1678 { 1679 return 0; 1680 } 1681 1682 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1683 struct xfrm_policy *xp, const struct flowi *fl) 1684 { 1685 return 1; 1686 } 1687 1688 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1689 { 1690 return 0; 1691 } 1692 1693 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1694 { 1695 } 1696 1697 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1698 1699 #ifdef CONFIG_SECURITY_PATH 1700 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1701 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1702 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1703 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1704 unsigned int dev); 1705 int security_path_truncate(const struct path *path); 1706 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1707 const char *old_name); 1708 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1709 struct dentry *new_dentry); 1710 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1711 const struct path *new_dir, struct dentry *new_dentry, 1712 unsigned int flags); 1713 int security_path_chmod(const struct path *path, umode_t mode); 1714 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1715 int security_path_chroot(const struct path *path); 1716 #else /* CONFIG_SECURITY_PATH */ 1717 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1718 { 1719 return 0; 1720 } 1721 1722 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1723 umode_t mode) 1724 { 1725 return 0; 1726 } 1727 1728 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1729 { 1730 return 0; 1731 } 1732 1733 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1734 umode_t mode, unsigned int dev) 1735 { 1736 return 0; 1737 } 1738 1739 static inline int security_path_truncate(const struct path *path) 1740 { 1741 return 0; 1742 } 1743 1744 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1745 const char *old_name) 1746 { 1747 return 0; 1748 } 1749 1750 static inline int security_path_link(struct dentry *old_dentry, 1751 const struct path *new_dir, 1752 struct dentry *new_dentry) 1753 { 1754 return 0; 1755 } 1756 1757 static inline int security_path_rename(const struct path *old_dir, 1758 struct dentry *old_dentry, 1759 const struct path *new_dir, 1760 struct dentry *new_dentry, 1761 unsigned int flags) 1762 { 1763 return 0; 1764 } 1765 1766 static inline int security_path_chmod(const struct path *path, umode_t mode) 1767 { 1768 return 0; 1769 } 1770 1771 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1772 { 1773 return 0; 1774 } 1775 1776 static inline int security_path_chroot(const struct path *path) 1777 { 1778 return 0; 1779 } 1780 #endif /* CONFIG_SECURITY_PATH */ 1781 1782 #ifdef CONFIG_KEYS 1783 #ifdef CONFIG_SECURITY 1784 1785 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1786 void security_key_free(struct key *key); 1787 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1788 enum key_need_perm need_perm); 1789 int security_key_getsecurity(struct key *key, char **_buffer); 1790 1791 #else 1792 1793 static inline int security_key_alloc(struct key *key, 1794 const struct cred *cred, 1795 unsigned long flags) 1796 { 1797 return 0; 1798 } 1799 1800 static inline void security_key_free(struct key *key) 1801 { 1802 } 1803 1804 static inline int security_key_permission(key_ref_t key_ref, 1805 const struct cred *cred, 1806 enum key_need_perm need_perm) 1807 { 1808 return 0; 1809 } 1810 1811 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1812 { 1813 *_buffer = NULL; 1814 return 0; 1815 } 1816 1817 #endif 1818 #endif /* CONFIG_KEYS */ 1819 1820 #ifdef CONFIG_AUDIT 1821 #ifdef CONFIG_SECURITY 1822 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1823 int security_audit_rule_known(struct audit_krule *krule); 1824 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1825 void security_audit_rule_free(void *lsmrule); 1826 1827 #else 1828 1829 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1830 void **lsmrule) 1831 { 1832 return 0; 1833 } 1834 1835 static inline int security_audit_rule_known(struct audit_krule *krule) 1836 { 1837 return 0; 1838 } 1839 1840 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1841 void *lsmrule) 1842 { 1843 return 0; 1844 } 1845 1846 static inline void security_audit_rule_free(void *lsmrule) 1847 { } 1848 1849 #endif /* CONFIG_SECURITY */ 1850 #endif /* CONFIG_AUDIT */ 1851 1852 #ifdef CONFIG_SECURITYFS 1853 1854 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1855 struct dentry *parent, void *data, 1856 const struct file_operations *fops); 1857 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1858 struct dentry *securityfs_create_symlink(const char *name, 1859 struct dentry *parent, 1860 const char *target, 1861 const struct inode_operations *iops); 1862 extern void securityfs_remove(struct dentry *dentry); 1863 1864 #else /* CONFIG_SECURITYFS */ 1865 1866 static inline struct dentry *securityfs_create_dir(const char *name, 1867 struct dentry *parent) 1868 { 1869 return ERR_PTR(-ENODEV); 1870 } 1871 1872 static inline struct dentry *securityfs_create_file(const char *name, 1873 umode_t mode, 1874 struct dentry *parent, 1875 void *data, 1876 const struct file_operations *fops) 1877 { 1878 return ERR_PTR(-ENODEV); 1879 } 1880 1881 static inline struct dentry *securityfs_create_symlink(const char *name, 1882 struct dentry *parent, 1883 const char *target, 1884 const struct inode_operations *iops) 1885 { 1886 return ERR_PTR(-ENODEV); 1887 } 1888 1889 static inline void securityfs_remove(struct dentry *dentry) 1890 {} 1891 1892 #endif 1893 1894 #ifdef CONFIG_BPF_SYSCALL 1895 union bpf_attr; 1896 struct bpf_map; 1897 struct bpf_prog; 1898 struct bpf_prog_aux; 1899 #ifdef CONFIG_SECURITY 1900 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1901 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1902 extern int security_bpf_prog(struct bpf_prog *prog); 1903 extern int security_bpf_map_alloc(struct bpf_map *map); 1904 extern void security_bpf_map_free(struct bpf_map *map); 1905 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1906 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1907 #else 1908 static inline int security_bpf(int cmd, union bpf_attr *attr, 1909 unsigned int size) 1910 { 1911 return 0; 1912 } 1913 1914 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1915 { 1916 return 0; 1917 } 1918 1919 static inline int security_bpf_prog(struct bpf_prog *prog) 1920 { 1921 return 0; 1922 } 1923 1924 static inline int security_bpf_map_alloc(struct bpf_map *map) 1925 { 1926 return 0; 1927 } 1928 1929 static inline void security_bpf_map_free(struct bpf_map *map) 1930 { } 1931 1932 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1933 { 1934 return 0; 1935 } 1936 1937 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1938 { } 1939 #endif /* CONFIG_SECURITY */ 1940 #endif /* CONFIG_BPF_SYSCALL */ 1941 1942 #ifdef CONFIG_PERF_EVENTS 1943 struct perf_event_attr; 1944 struct perf_event; 1945 1946 #ifdef CONFIG_SECURITY 1947 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1948 extern int security_perf_event_alloc(struct perf_event *event); 1949 extern void security_perf_event_free(struct perf_event *event); 1950 extern int security_perf_event_read(struct perf_event *event); 1951 extern int security_perf_event_write(struct perf_event *event); 1952 #else 1953 static inline int security_perf_event_open(struct perf_event_attr *attr, 1954 int type) 1955 { 1956 return 0; 1957 } 1958 1959 static inline int security_perf_event_alloc(struct perf_event *event) 1960 { 1961 return 0; 1962 } 1963 1964 static inline void security_perf_event_free(struct perf_event *event) 1965 { 1966 } 1967 1968 static inline int security_perf_event_read(struct perf_event *event) 1969 { 1970 return 0; 1971 } 1972 1973 static inline int security_perf_event_write(struct perf_event *event) 1974 { 1975 return 0; 1976 } 1977 #endif /* CONFIG_SECURITY */ 1978 #endif /* CONFIG_PERF_EVENTS */ 1979 1980 #endif /* ! __LINUX_SECURITY_H */ 1981