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, bool contents); 391 int security_kernel_post_load_data(char *buf, loff_t size, 392 enum kernel_load_data_id id, 393 char *description); 394 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 395 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 396 enum kernel_read_file_id id); 397 int security_task_fix_setuid(struct cred *new, const struct cred *old, 398 int flags); 399 int security_task_fix_setgid(struct cred *new, const struct cred *old, 400 int flags); 401 int security_task_setpgid(struct task_struct *p, pid_t pgid); 402 int security_task_getpgid(struct task_struct *p); 403 int security_task_getsid(struct task_struct *p); 404 void security_task_getsecid(struct task_struct *p, u32 *secid); 405 int security_task_setnice(struct task_struct *p, int nice); 406 int security_task_setioprio(struct task_struct *p, int ioprio); 407 int security_task_getioprio(struct task_struct *p); 408 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 409 unsigned int flags); 410 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 411 struct rlimit *new_rlim); 412 int security_task_setscheduler(struct task_struct *p); 413 int security_task_getscheduler(struct task_struct *p); 414 int security_task_movememory(struct task_struct *p); 415 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 416 int sig, const struct cred *cred); 417 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 418 unsigned long arg4, unsigned long arg5); 419 void security_task_to_inode(struct task_struct *p, struct inode *inode); 420 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 421 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 422 int security_msg_msg_alloc(struct msg_msg *msg); 423 void security_msg_msg_free(struct msg_msg *msg); 424 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 425 void security_msg_queue_free(struct kern_ipc_perm *msq); 426 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 427 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 428 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 429 struct msg_msg *msg, int msqflg); 430 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 431 struct task_struct *target, long type, int mode); 432 int security_shm_alloc(struct kern_ipc_perm *shp); 433 void security_shm_free(struct kern_ipc_perm *shp); 434 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 435 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 436 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 437 int security_sem_alloc(struct kern_ipc_perm *sma); 438 void security_sem_free(struct kern_ipc_perm *sma); 439 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 440 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 441 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 442 unsigned nsops, int alter); 443 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 444 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 445 char **value); 446 int security_setprocattr(const char *lsm, const char *name, void *value, 447 size_t size); 448 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 449 int security_ismaclabel(const char *name); 450 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 451 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 452 void security_release_secctx(char *secdata, u32 seclen); 453 void security_inode_invalidate_secctx(struct inode *inode); 454 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 455 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 456 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 457 int security_locked_down(enum lockdown_reason what); 458 #else /* CONFIG_SECURITY */ 459 460 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 461 { 462 return 0; 463 } 464 465 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 466 { 467 return 0; 468 } 469 470 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 471 { 472 return 0; 473 } 474 475 static inline void security_free_mnt_opts(void **mnt_opts) 476 { 477 } 478 479 /* 480 * This is the default capabilities functionality. Most of these functions 481 * are just stubbed out, but a few must call the proper capable code. 482 */ 483 484 static inline int security_init(void) 485 { 486 return 0; 487 } 488 489 static inline int early_security_init(void) 490 { 491 return 0; 492 } 493 494 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 495 { 496 return 0; 497 } 498 499 static inline int security_binder_transaction(struct task_struct *from, 500 struct task_struct *to) 501 { 502 return 0; 503 } 504 505 static inline int security_binder_transfer_binder(struct task_struct *from, 506 struct task_struct *to) 507 { 508 return 0; 509 } 510 511 static inline int security_binder_transfer_file(struct task_struct *from, 512 struct task_struct *to, 513 struct file *file) 514 { 515 return 0; 516 } 517 518 static inline int security_ptrace_access_check(struct task_struct *child, 519 unsigned int mode) 520 { 521 return cap_ptrace_access_check(child, mode); 522 } 523 524 static inline int security_ptrace_traceme(struct task_struct *parent) 525 { 526 return cap_ptrace_traceme(parent); 527 } 528 529 static inline int security_capget(struct task_struct *target, 530 kernel_cap_t *effective, 531 kernel_cap_t *inheritable, 532 kernel_cap_t *permitted) 533 { 534 return cap_capget(target, effective, inheritable, permitted); 535 } 536 537 static inline int security_capset(struct cred *new, 538 const struct cred *old, 539 const kernel_cap_t *effective, 540 const kernel_cap_t *inheritable, 541 const kernel_cap_t *permitted) 542 { 543 return cap_capset(new, old, effective, inheritable, permitted); 544 } 545 546 static inline int security_capable(const struct cred *cred, 547 struct user_namespace *ns, 548 int cap, 549 unsigned int opts) 550 { 551 return cap_capable(cred, ns, cap, opts); 552 } 553 554 static inline int security_quotactl(int cmds, int type, int id, 555 struct super_block *sb) 556 { 557 return 0; 558 } 559 560 static inline int security_quota_on(struct dentry *dentry) 561 { 562 return 0; 563 } 564 565 static inline int security_syslog(int type) 566 { 567 return 0; 568 } 569 570 static inline int security_settime64(const struct timespec64 *ts, 571 const struct timezone *tz) 572 { 573 return cap_settime(ts, tz); 574 } 575 576 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 577 { 578 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 579 } 580 581 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 582 { 583 return 0; 584 } 585 586 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 587 struct file *file) 588 { 589 return cap_bprm_creds_from_file(bprm, file); 590 } 591 592 static inline int security_bprm_check(struct linux_binprm *bprm) 593 { 594 return 0; 595 } 596 597 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 598 { 599 } 600 601 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 602 { 603 } 604 605 static inline int security_fs_context_dup(struct fs_context *fc, 606 struct fs_context *src_fc) 607 { 608 return 0; 609 } 610 static inline int security_fs_context_parse_param(struct fs_context *fc, 611 struct fs_parameter *param) 612 { 613 return -ENOPARAM; 614 } 615 616 static inline int security_sb_alloc(struct super_block *sb) 617 { 618 return 0; 619 } 620 621 static inline void security_sb_free(struct super_block *sb) 622 { } 623 624 static inline int security_sb_eat_lsm_opts(char *options, 625 void **mnt_opts) 626 { 627 return 0; 628 } 629 630 static inline int security_sb_remount(struct super_block *sb, 631 void *mnt_opts) 632 { 633 return 0; 634 } 635 636 static inline int security_sb_kern_mount(struct super_block *sb) 637 { 638 return 0; 639 } 640 641 static inline int security_sb_show_options(struct seq_file *m, 642 struct super_block *sb) 643 { 644 return 0; 645 } 646 647 static inline int security_sb_statfs(struct dentry *dentry) 648 { 649 return 0; 650 } 651 652 static inline int security_sb_mount(const char *dev_name, const struct path *path, 653 const char *type, unsigned long flags, 654 void *data) 655 { 656 return 0; 657 } 658 659 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 660 { 661 return 0; 662 } 663 664 static inline int security_sb_pivotroot(const struct path *old_path, 665 const struct path *new_path) 666 { 667 return 0; 668 } 669 670 static inline int security_sb_set_mnt_opts(struct super_block *sb, 671 void *mnt_opts, 672 unsigned long kern_flags, 673 unsigned long *set_kern_flags) 674 { 675 return 0; 676 } 677 678 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 679 struct super_block *newsb, 680 unsigned long kern_flags, 681 unsigned long *set_kern_flags) 682 { 683 return 0; 684 } 685 686 static inline int security_add_mnt_opt(const char *option, const char *val, 687 int len, void **mnt_opts) 688 { 689 return 0; 690 } 691 692 static inline int security_move_mount(const struct path *from_path, 693 const struct path *to_path) 694 { 695 return 0; 696 } 697 698 static inline int security_path_notify(const struct path *path, u64 mask, 699 unsigned int obj_type) 700 { 701 return 0; 702 } 703 704 static inline int security_inode_alloc(struct inode *inode) 705 { 706 return 0; 707 } 708 709 static inline void security_inode_free(struct inode *inode) 710 { } 711 712 static inline int security_dentry_init_security(struct dentry *dentry, 713 int mode, 714 const struct qstr *name, 715 void **ctx, 716 u32 *ctxlen) 717 { 718 return -EOPNOTSUPP; 719 } 720 721 static inline int security_dentry_create_files_as(struct dentry *dentry, 722 int mode, struct qstr *name, 723 const struct cred *old, 724 struct cred *new) 725 { 726 return 0; 727 } 728 729 730 static inline int security_inode_init_security(struct inode *inode, 731 struct inode *dir, 732 const struct qstr *qstr, 733 const initxattrs xattrs, 734 void *fs_data) 735 { 736 return 0; 737 } 738 739 static inline int security_old_inode_init_security(struct inode *inode, 740 struct inode *dir, 741 const struct qstr *qstr, 742 const char **name, 743 void **value, size_t *len) 744 { 745 return -EOPNOTSUPP; 746 } 747 748 static inline int security_inode_create(struct inode *dir, 749 struct dentry *dentry, 750 umode_t mode) 751 { 752 return 0; 753 } 754 755 static inline int security_inode_link(struct dentry *old_dentry, 756 struct inode *dir, 757 struct dentry *new_dentry) 758 { 759 return 0; 760 } 761 762 static inline int security_inode_unlink(struct inode *dir, 763 struct dentry *dentry) 764 { 765 return 0; 766 } 767 768 static inline int security_inode_symlink(struct inode *dir, 769 struct dentry *dentry, 770 const char *old_name) 771 { 772 return 0; 773 } 774 775 static inline int security_inode_mkdir(struct inode *dir, 776 struct dentry *dentry, 777 int mode) 778 { 779 return 0; 780 } 781 782 static inline int security_inode_rmdir(struct inode *dir, 783 struct dentry *dentry) 784 { 785 return 0; 786 } 787 788 static inline int security_inode_mknod(struct inode *dir, 789 struct dentry *dentry, 790 int mode, dev_t dev) 791 { 792 return 0; 793 } 794 795 static inline int security_inode_rename(struct inode *old_dir, 796 struct dentry *old_dentry, 797 struct inode *new_dir, 798 struct dentry *new_dentry, 799 unsigned int flags) 800 { 801 return 0; 802 } 803 804 static inline int security_inode_readlink(struct dentry *dentry) 805 { 806 return 0; 807 } 808 809 static inline int security_inode_follow_link(struct dentry *dentry, 810 struct inode *inode, 811 bool rcu) 812 { 813 return 0; 814 } 815 816 static inline int security_inode_permission(struct inode *inode, int mask) 817 { 818 return 0; 819 } 820 821 static inline int security_inode_setattr(struct dentry *dentry, 822 struct iattr *attr) 823 { 824 return 0; 825 } 826 827 static inline int security_inode_getattr(const struct path *path) 828 { 829 return 0; 830 } 831 832 static inline int security_inode_setxattr(struct dentry *dentry, 833 const char *name, const void *value, size_t size, int flags) 834 { 835 return cap_inode_setxattr(dentry, name, value, size, flags); 836 } 837 838 static inline void security_inode_post_setxattr(struct dentry *dentry, 839 const char *name, const void *value, size_t size, int flags) 840 { } 841 842 static inline int security_inode_getxattr(struct dentry *dentry, 843 const char *name) 844 { 845 return 0; 846 } 847 848 static inline int security_inode_listxattr(struct dentry *dentry) 849 { 850 return 0; 851 } 852 853 static inline int security_inode_removexattr(struct dentry *dentry, 854 const char *name) 855 { 856 return cap_inode_removexattr(dentry, name); 857 } 858 859 static inline int security_inode_need_killpriv(struct dentry *dentry) 860 { 861 return cap_inode_need_killpriv(dentry); 862 } 863 864 static inline int security_inode_killpriv(struct dentry *dentry) 865 { 866 return cap_inode_killpriv(dentry); 867 } 868 869 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 870 { 871 return -EOPNOTSUPP; 872 } 873 874 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 875 { 876 return -EOPNOTSUPP; 877 } 878 879 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 880 { 881 return 0; 882 } 883 884 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 885 { 886 *secid = 0; 887 } 888 889 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 890 { 891 return 0; 892 } 893 894 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 895 struct kernfs_node *kn) 896 { 897 return 0; 898 } 899 900 static inline int security_inode_copy_up_xattr(const char *name) 901 { 902 return -EOPNOTSUPP; 903 } 904 905 static inline int security_file_permission(struct file *file, int mask) 906 { 907 return 0; 908 } 909 910 static inline int security_file_alloc(struct file *file) 911 { 912 return 0; 913 } 914 915 static inline void security_file_free(struct file *file) 916 { } 917 918 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 919 unsigned long arg) 920 { 921 return 0; 922 } 923 924 static inline int security_mmap_file(struct file *file, unsigned long prot, 925 unsigned long flags) 926 { 927 return 0; 928 } 929 930 static inline int security_mmap_addr(unsigned long addr) 931 { 932 return cap_mmap_addr(addr); 933 } 934 935 static inline int security_file_mprotect(struct vm_area_struct *vma, 936 unsigned long reqprot, 937 unsigned long prot) 938 { 939 return 0; 940 } 941 942 static inline int security_file_lock(struct file *file, unsigned int cmd) 943 { 944 return 0; 945 } 946 947 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 948 unsigned long arg) 949 { 950 return 0; 951 } 952 953 static inline void security_file_set_fowner(struct file *file) 954 { 955 return; 956 } 957 958 static inline int security_file_send_sigiotask(struct task_struct *tsk, 959 struct fown_struct *fown, 960 int sig) 961 { 962 return 0; 963 } 964 965 static inline int security_file_receive(struct file *file) 966 { 967 return 0; 968 } 969 970 static inline int security_file_open(struct file *file) 971 { 972 return 0; 973 } 974 975 static inline int security_task_alloc(struct task_struct *task, 976 unsigned long clone_flags) 977 { 978 return 0; 979 } 980 981 static inline void security_task_free(struct task_struct *task) 982 { } 983 984 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 985 { 986 return 0; 987 } 988 989 static inline void security_cred_free(struct cred *cred) 990 { } 991 992 static inline int security_prepare_creds(struct cred *new, 993 const struct cred *old, 994 gfp_t gfp) 995 { 996 return 0; 997 } 998 999 static inline void security_transfer_creds(struct cred *new, 1000 const struct cred *old) 1001 { 1002 } 1003 1004 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1005 { 1006 return 0; 1007 } 1008 1009 static inline int security_kernel_create_files_as(struct cred *cred, 1010 struct inode *inode) 1011 { 1012 return 0; 1013 } 1014 1015 static inline int security_kernel_module_request(char *kmod_name) 1016 { 1017 return 0; 1018 } 1019 1020 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1021 { 1022 return 0; 1023 } 1024 1025 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1026 enum kernel_load_data_id id, 1027 char *description) 1028 { 1029 return 0; 1030 } 1031 1032 static inline int security_kernel_read_file(struct file *file, 1033 enum kernel_read_file_id id) 1034 { 1035 return 0; 1036 } 1037 1038 static inline int security_kernel_post_read_file(struct file *file, 1039 char *buf, loff_t size, 1040 enum kernel_read_file_id id) 1041 { 1042 return 0; 1043 } 1044 1045 static inline int security_task_fix_setuid(struct cred *new, 1046 const struct cred *old, 1047 int flags) 1048 { 1049 return cap_task_fix_setuid(new, old, flags); 1050 } 1051 1052 static inline int security_task_fix_setgid(struct cred *new, 1053 const struct cred *old, 1054 int flags) 1055 { 1056 return 0; 1057 } 1058 1059 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1060 { 1061 return 0; 1062 } 1063 1064 static inline int security_task_getpgid(struct task_struct *p) 1065 { 1066 return 0; 1067 } 1068 1069 static inline int security_task_getsid(struct task_struct *p) 1070 { 1071 return 0; 1072 } 1073 1074 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1075 { 1076 *secid = 0; 1077 } 1078 1079 static inline int security_task_setnice(struct task_struct *p, int nice) 1080 { 1081 return cap_task_setnice(p, nice); 1082 } 1083 1084 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1085 { 1086 return cap_task_setioprio(p, ioprio); 1087 } 1088 1089 static inline int security_task_getioprio(struct task_struct *p) 1090 { 1091 return 0; 1092 } 1093 1094 static inline int security_task_prlimit(const struct cred *cred, 1095 const struct cred *tcred, 1096 unsigned int flags) 1097 { 1098 return 0; 1099 } 1100 1101 static inline int security_task_setrlimit(struct task_struct *p, 1102 unsigned int resource, 1103 struct rlimit *new_rlim) 1104 { 1105 return 0; 1106 } 1107 1108 static inline int security_task_setscheduler(struct task_struct *p) 1109 { 1110 return cap_task_setscheduler(p); 1111 } 1112 1113 static inline int security_task_getscheduler(struct task_struct *p) 1114 { 1115 return 0; 1116 } 1117 1118 static inline int security_task_movememory(struct task_struct *p) 1119 { 1120 return 0; 1121 } 1122 1123 static inline int security_task_kill(struct task_struct *p, 1124 struct kernel_siginfo *info, int sig, 1125 const struct cred *cred) 1126 { 1127 return 0; 1128 } 1129 1130 static inline int security_task_prctl(int option, unsigned long arg2, 1131 unsigned long arg3, 1132 unsigned long arg4, 1133 unsigned long arg5) 1134 { 1135 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1136 } 1137 1138 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1139 { } 1140 1141 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1142 short flag) 1143 { 1144 return 0; 1145 } 1146 1147 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1148 { 1149 *secid = 0; 1150 } 1151 1152 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1153 { 1154 return 0; 1155 } 1156 1157 static inline void security_msg_msg_free(struct msg_msg *msg) 1158 { } 1159 1160 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1161 { 1162 return 0; 1163 } 1164 1165 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1166 { } 1167 1168 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1169 int msqflg) 1170 { 1171 return 0; 1172 } 1173 1174 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1175 { 1176 return 0; 1177 } 1178 1179 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1180 struct msg_msg *msg, int msqflg) 1181 { 1182 return 0; 1183 } 1184 1185 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1186 struct msg_msg *msg, 1187 struct task_struct *target, 1188 long type, int mode) 1189 { 1190 return 0; 1191 } 1192 1193 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1194 { 1195 return 0; 1196 } 1197 1198 static inline void security_shm_free(struct kern_ipc_perm *shp) 1199 { } 1200 1201 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1202 int shmflg) 1203 { 1204 return 0; 1205 } 1206 1207 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1208 { 1209 return 0; 1210 } 1211 1212 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1213 char __user *shmaddr, int shmflg) 1214 { 1215 return 0; 1216 } 1217 1218 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1219 { 1220 return 0; 1221 } 1222 1223 static inline void security_sem_free(struct kern_ipc_perm *sma) 1224 { } 1225 1226 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1227 { 1228 return 0; 1229 } 1230 1231 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1232 { 1233 return 0; 1234 } 1235 1236 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1237 struct sembuf *sops, unsigned nsops, 1238 int alter) 1239 { 1240 return 0; 1241 } 1242 1243 static inline void security_d_instantiate(struct dentry *dentry, 1244 struct inode *inode) 1245 { } 1246 1247 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1248 char *name, char **value) 1249 { 1250 return -EINVAL; 1251 } 1252 1253 static inline int security_setprocattr(const char *lsm, char *name, 1254 void *value, size_t size) 1255 { 1256 return -EINVAL; 1257 } 1258 1259 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1260 { 1261 return 0; 1262 } 1263 1264 static inline int security_ismaclabel(const char *name) 1265 { 1266 return 0; 1267 } 1268 1269 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1270 { 1271 return -EOPNOTSUPP; 1272 } 1273 1274 static inline int security_secctx_to_secid(const char *secdata, 1275 u32 seclen, 1276 u32 *secid) 1277 { 1278 return -EOPNOTSUPP; 1279 } 1280 1281 static inline void security_release_secctx(char *secdata, u32 seclen) 1282 { 1283 } 1284 1285 static inline void security_inode_invalidate_secctx(struct inode *inode) 1286 { 1287 } 1288 1289 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1290 { 1291 return -EOPNOTSUPP; 1292 } 1293 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1294 { 1295 return -EOPNOTSUPP; 1296 } 1297 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1298 { 1299 return -EOPNOTSUPP; 1300 } 1301 static inline int security_locked_down(enum lockdown_reason what) 1302 { 1303 return 0; 1304 } 1305 #endif /* CONFIG_SECURITY */ 1306 1307 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1308 int security_post_notification(const struct cred *w_cred, 1309 const struct cred *cred, 1310 struct watch_notification *n); 1311 #else 1312 static inline int security_post_notification(const struct cred *w_cred, 1313 const struct cred *cred, 1314 struct watch_notification *n) 1315 { 1316 return 0; 1317 } 1318 #endif 1319 1320 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1321 int security_watch_key(struct key *key); 1322 #else 1323 static inline int security_watch_key(struct key *key) 1324 { 1325 return 0; 1326 } 1327 #endif 1328 1329 #ifdef CONFIG_SECURITY_NETWORK 1330 1331 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1332 int security_unix_may_send(struct socket *sock, struct socket *other); 1333 int security_socket_create(int family, int type, int protocol, int kern); 1334 int security_socket_post_create(struct socket *sock, int family, 1335 int type, int protocol, int kern); 1336 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1337 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1338 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1339 int security_socket_listen(struct socket *sock, int backlog); 1340 int security_socket_accept(struct socket *sock, struct socket *newsock); 1341 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1342 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1343 int size, int flags); 1344 int security_socket_getsockname(struct socket *sock); 1345 int security_socket_getpeername(struct socket *sock); 1346 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1347 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1348 int security_socket_shutdown(struct socket *sock, int how); 1349 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1350 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1351 int __user *optlen, unsigned len); 1352 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1353 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1354 void security_sk_free(struct sock *sk); 1355 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1356 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1357 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1358 void security_sock_graft(struct sock*sk, struct socket *parent); 1359 int security_inet_conn_request(struct sock *sk, 1360 struct sk_buff *skb, struct request_sock *req); 1361 void security_inet_csk_clone(struct sock *newsk, 1362 const struct request_sock *req); 1363 void security_inet_conn_established(struct sock *sk, 1364 struct sk_buff *skb); 1365 int security_secmark_relabel_packet(u32 secid); 1366 void security_secmark_refcount_inc(void); 1367 void security_secmark_refcount_dec(void); 1368 int security_tun_dev_alloc_security(void **security); 1369 void security_tun_dev_free_security(void *security); 1370 int security_tun_dev_create(void); 1371 int security_tun_dev_attach_queue(void *security); 1372 int security_tun_dev_attach(struct sock *sk, void *security); 1373 int security_tun_dev_open(void *security); 1374 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1375 int security_sctp_bind_connect(struct sock *sk, int optname, 1376 struct sockaddr *address, int addrlen); 1377 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1378 struct sock *newsk); 1379 1380 #else /* CONFIG_SECURITY_NETWORK */ 1381 static inline int security_unix_stream_connect(struct sock *sock, 1382 struct sock *other, 1383 struct sock *newsk) 1384 { 1385 return 0; 1386 } 1387 1388 static inline int security_unix_may_send(struct socket *sock, 1389 struct socket *other) 1390 { 1391 return 0; 1392 } 1393 1394 static inline int security_socket_create(int family, int type, 1395 int protocol, int kern) 1396 { 1397 return 0; 1398 } 1399 1400 static inline int security_socket_post_create(struct socket *sock, 1401 int family, 1402 int type, 1403 int protocol, int kern) 1404 { 1405 return 0; 1406 } 1407 1408 static inline int security_socket_socketpair(struct socket *socka, 1409 struct socket *sockb) 1410 { 1411 return 0; 1412 } 1413 1414 static inline int security_socket_bind(struct socket *sock, 1415 struct sockaddr *address, 1416 int addrlen) 1417 { 1418 return 0; 1419 } 1420 1421 static inline int security_socket_connect(struct socket *sock, 1422 struct sockaddr *address, 1423 int addrlen) 1424 { 1425 return 0; 1426 } 1427 1428 static inline int security_socket_listen(struct socket *sock, int backlog) 1429 { 1430 return 0; 1431 } 1432 1433 static inline int security_socket_accept(struct socket *sock, 1434 struct socket *newsock) 1435 { 1436 return 0; 1437 } 1438 1439 static inline int security_socket_sendmsg(struct socket *sock, 1440 struct msghdr *msg, int size) 1441 { 1442 return 0; 1443 } 1444 1445 static inline int security_socket_recvmsg(struct socket *sock, 1446 struct msghdr *msg, int size, 1447 int flags) 1448 { 1449 return 0; 1450 } 1451 1452 static inline int security_socket_getsockname(struct socket *sock) 1453 { 1454 return 0; 1455 } 1456 1457 static inline int security_socket_getpeername(struct socket *sock) 1458 { 1459 return 0; 1460 } 1461 1462 static inline int security_socket_getsockopt(struct socket *sock, 1463 int level, int optname) 1464 { 1465 return 0; 1466 } 1467 1468 static inline int security_socket_setsockopt(struct socket *sock, 1469 int level, int optname) 1470 { 1471 return 0; 1472 } 1473 1474 static inline int security_socket_shutdown(struct socket *sock, int how) 1475 { 1476 return 0; 1477 } 1478 static inline int security_sock_rcv_skb(struct sock *sk, 1479 struct sk_buff *skb) 1480 { 1481 return 0; 1482 } 1483 1484 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1485 int __user *optlen, unsigned len) 1486 { 1487 return -ENOPROTOOPT; 1488 } 1489 1490 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1491 { 1492 return -ENOPROTOOPT; 1493 } 1494 1495 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1496 { 1497 return 0; 1498 } 1499 1500 static inline void security_sk_free(struct sock *sk) 1501 { 1502 } 1503 1504 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1505 { 1506 } 1507 1508 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1509 { 1510 } 1511 1512 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1513 { 1514 } 1515 1516 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1517 { 1518 } 1519 1520 static inline int security_inet_conn_request(struct sock *sk, 1521 struct sk_buff *skb, struct request_sock *req) 1522 { 1523 return 0; 1524 } 1525 1526 static inline void security_inet_csk_clone(struct sock *newsk, 1527 const struct request_sock *req) 1528 { 1529 } 1530 1531 static inline void security_inet_conn_established(struct sock *sk, 1532 struct sk_buff *skb) 1533 { 1534 } 1535 1536 static inline int security_secmark_relabel_packet(u32 secid) 1537 { 1538 return 0; 1539 } 1540 1541 static inline void security_secmark_refcount_inc(void) 1542 { 1543 } 1544 1545 static inline void security_secmark_refcount_dec(void) 1546 { 1547 } 1548 1549 static inline int security_tun_dev_alloc_security(void **security) 1550 { 1551 return 0; 1552 } 1553 1554 static inline void security_tun_dev_free_security(void *security) 1555 { 1556 } 1557 1558 static inline int security_tun_dev_create(void) 1559 { 1560 return 0; 1561 } 1562 1563 static inline int security_tun_dev_attach_queue(void *security) 1564 { 1565 return 0; 1566 } 1567 1568 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1569 { 1570 return 0; 1571 } 1572 1573 static inline int security_tun_dev_open(void *security) 1574 { 1575 return 0; 1576 } 1577 1578 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1579 struct sk_buff *skb) 1580 { 1581 return 0; 1582 } 1583 1584 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1585 struct sockaddr *address, 1586 int addrlen) 1587 { 1588 return 0; 1589 } 1590 1591 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1592 struct sock *sk, 1593 struct sock *newsk) 1594 { 1595 } 1596 #endif /* CONFIG_SECURITY_NETWORK */ 1597 1598 #ifdef CONFIG_SECURITY_INFINIBAND 1599 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1600 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1601 int security_ib_alloc_security(void **sec); 1602 void security_ib_free_security(void *sec); 1603 #else /* CONFIG_SECURITY_INFINIBAND */ 1604 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1605 { 1606 return 0; 1607 } 1608 1609 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1610 { 1611 return 0; 1612 } 1613 1614 static inline int security_ib_alloc_security(void **sec) 1615 { 1616 return 0; 1617 } 1618 1619 static inline void security_ib_free_security(void *sec) 1620 { 1621 } 1622 #endif /* CONFIG_SECURITY_INFINIBAND */ 1623 1624 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1625 1626 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1627 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1628 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1629 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1630 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1631 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1632 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1633 struct xfrm_sec_ctx *polsec, u32 secid); 1634 int security_xfrm_state_delete(struct xfrm_state *x); 1635 void security_xfrm_state_free(struct xfrm_state *x); 1636 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1637 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1638 struct xfrm_policy *xp, 1639 const struct flowi *fl); 1640 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1641 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1642 1643 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1644 1645 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1646 struct xfrm_user_sec_ctx *sec_ctx, 1647 gfp_t gfp) 1648 { 1649 return 0; 1650 } 1651 1652 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1653 { 1654 return 0; 1655 } 1656 1657 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1658 { 1659 } 1660 1661 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1662 { 1663 return 0; 1664 } 1665 1666 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1667 struct xfrm_user_sec_ctx *sec_ctx) 1668 { 1669 return 0; 1670 } 1671 1672 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1673 struct xfrm_sec_ctx *polsec, u32 secid) 1674 { 1675 return 0; 1676 } 1677 1678 static inline void security_xfrm_state_free(struct xfrm_state *x) 1679 { 1680 } 1681 1682 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1683 { 1684 return 0; 1685 } 1686 1687 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1688 { 1689 return 0; 1690 } 1691 1692 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1693 struct xfrm_policy *xp, const struct flowi *fl) 1694 { 1695 return 1; 1696 } 1697 1698 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1699 { 1700 return 0; 1701 } 1702 1703 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1704 { 1705 } 1706 1707 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1708 1709 #ifdef CONFIG_SECURITY_PATH 1710 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1711 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1712 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1713 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1714 unsigned int dev); 1715 int security_path_truncate(const struct path *path); 1716 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1717 const char *old_name); 1718 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1719 struct dentry *new_dentry); 1720 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1721 const struct path *new_dir, struct dentry *new_dentry, 1722 unsigned int flags); 1723 int security_path_chmod(const struct path *path, umode_t mode); 1724 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1725 int security_path_chroot(const struct path *path); 1726 #else /* CONFIG_SECURITY_PATH */ 1727 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1728 { 1729 return 0; 1730 } 1731 1732 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1733 umode_t mode) 1734 { 1735 return 0; 1736 } 1737 1738 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1739 { 1740 return 0; 1741 } 1742 1743 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1744 umode_t mode, unsigned int dev) 1745 { 1746 return 0; 1747 } 1748 1749 static inline int security_path_truncate(const struct path *path) 1750 { 1751 return 0; 1752 } 1753 1754 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1755 const char *old_name) 1756 { 1757 return 0; 1758 } 1759 1760 static inline int security_path_link(struct dentry *old_dentry, 1761 const struct path *new_dir, 1762 struct dentry *new_dentry) 1763 { 1764 return 0; 1765 } 1766 1767 static inline int security_path_rename(const struct path *old_dir, 1768 struct dentry *old_dentry, 1769 const struct path *new_dir, 1770 struct dentry *new_dentry, 1771 unsigned int flags) 1772 { 1773 return 0; 1774 } 1775 1776 static inline int security_path_chmod(const struct path *path, umode_t mode) 1777 { 1778 return 0; 1779 } 1780 1781 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1782 { 1783 return 0; 1784 } 1785 1786 static inline int security_path_chroot(const struct path *path) 1787 { 1788 return 0; 1789 } 1790 #endif /* CONFIG_SECURITY_PATH */ 1791 1792 #ifdef CONFIG_KEYS 1793 #ifdef CONFIG_SECURITY 1794 1795 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1796 void security_key_free(struct key *key); 1797 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1798 enum key_need_perm need_perm); 1799 int security_key_getsecurity(struct key *key, char **_buffer); 1800 1801 #else 1802 1803 static inline int security_key_alloc(struct key *key, 1804 const struct cred *cred, 1805 unsigned long flags) 1806 { 1807 return 0; 1808 } 1809 1810 static inline void security_key_free(struct key *key) 1811 { 1812 } 1813 1814 static inline int security_key_permission(key_ref_t key_ref, 1815 const struct cred *cred, 1816 enum key_need_perm need_perm) 1817 { 1818 return 0; 1819 } 1820 1821 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1822 { 1823 *_buffer = NULL; 1824 return 0; 1825 } 1826 1827 #endif 1828 #endif /* CONFIG_KEYS */ 1829 1830 #ifdef CONFIG_AUDIT 1831 #ifdef CONFIG_SECURITY 1832 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1833 int security_audit_rule_known(struct audit_krule *krule); 1834 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1835 void security_audit_rule_free(void *lsmrule); 1836 1837 #else 1838 1839 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1840 void **lsmrule) 1841 { 1842 return 0; 1843 } 1844 1845 static inline int security_audit_rule_known(struct audit_krule *krule) 1846 { 1847 return 0; 1848 } 1849 1850 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1851 void *lsmrule) 1852 { 1853 return 0; 1854 } 1855 1856 static inline void security_audit_rule_free(void *lsmrule) 1857 { } 1858 1859 #endif /* CONFIG_SECURITY */ 1860 #endif /* CONFIG_AUDIT */ 1861 1862 #ifdef CONFIG_SECURITYFS 1863 1864 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1865 struct dentry *parent, void *data, 1866 const struct file_operations *fops); 1867 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1868 struct dentry *securityfs_create_symlink(const char *name, 1869 struct dentry *parent, 1870 const char *target, 1871 const struct inode_operations *iops); 1872 extern void securityfs_remove(struct dentry *dentry); 1873 1874 #else /* CONFIG_SECURITYFS */ 1875 1876 static inline struct dentry *securityfs_create_dir(const char *name, 1877 struct dentry *parent) 1878 { 1879 return ERR_PTR(-ENODEV); 1880 } 1881 1882 static inline struct dentry *securityfs_create_file(const char *name, 1883 umode_t mode, 1884 struct dentry *parent, 1885 void *data, 1886 const struct file_operations *fops) 1887 { 1888 return ERR_PTR(-ENODEV); 1889 } 1890 1891 static inline struct dentry *securityfs_create_symlink(const char *name, 1892 struct dentry *parent, 1893 const char *target, 1894 const struct inode_operations *iops) 1895 { 1896 return ERR_PTR(-ENODEV); 1897 } 1898 1899 static inline void securityfs_remove(struct dentry *dentry) 1900 {} 1901 1902 #endif 1903 1904 #ifdef CONFIG_BPF_SYSCALL 1905 union bpf_attr; 1906 struct bpf_map; 1907 struct bpf_prog; 1908 struct bpf_prog_aux; 1909 #ifdef CONFIG_SECURITY 1910 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1911 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1912 extern int security_bpf_prog(struct bpf_prog *prog); 1913 extern int security_bpf_map_alloc(struct bpf_map *map); 1914 extern void security_bpf_map_free(struct bpf_map *map); 1915 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1916 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1917 #else 1918 static inline int security_bpf(int cmd, union bpf_attr *attr, 1919 unsigned int size) 1920 { 1921 return 0; 1922 } 1923 1924 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1925 { 1926 return 0; 1927 } 1928 1929 static inline int security_bpf_prog(struct bpf_prog *prog) 1930 { 1931 return 0; 1932 } 1933 1934 static inline int security_bpf_map_alloc(struct bpf_map *map) 1935 { 1936 return 0; 1937 } 1938 1939 static inline void security_bpf_map_free(struct bpf_map *map) 1940 { } 1941 1942 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1943 { 1944 return 0; 1945 } 1946 1947 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1948 { } 1949 #endif /* CONFIG_SECURITY */ 1950 #endif /* CONFIG_BPF_SYSCALL */ 1951 1952 #ifdef CONFIG_PERF_EVENTS 1953 struct perf_event_attr; 1954 struct perf_event; 1955 1956 #ifdef CONFIG_SECURITY 1957 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1958 extern int security_perf_event_alloc(struct perf_event *event); 1959 extern void security_perf_event_free(struct perf_event *event); 1960 extern int security_perf_event_read(struct perf_event *event); 1961 extern int security_perf_event_write(struct perf_event *event); 1962 #else 1963 static inline int security_perf_event_open(struct perf_event_attr *attr, 1964 int type) 1965 { 1966 return 0; 1967 } 1968 1969 static inline int security_perf_event_alloc(struct perf_event *event) 1970 { 1971 return 0; 1972 } 1973 1974 static inline void security_perf_event_free(struct perf_event *event) 1975 { 1976 } 1977 1978 static inline int security_perf_event_read(struct perf_event *event) 1979 { 1980 return 0; 1981 } 1982 1983 static inline int security_perf_event_write(struct perf_event *event) 1984 { 1985 return 0; 1986 } 1987 #endif /* CONFIG_SECURITY */ 1988 #endif /* CONFIG_PERF_EVENTS */ 1989 1990 #endif /* ! __LINUX_SECURITY_H */ 1991