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 bool contents); 396 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 397 enum kernel_read_file_id id); 398 int security_task_fix_setuid(struct cred *new, const struct cred *old, 399 int flags); 400 int security_task_fix_setgid(struct cred *new, const struct cred *old, 401 int flags); 402 int security_task_setpgid(struct task_struct *p, pid_t pgid); 403 int security_task_getpgid(struct task_struct *p); 404 int security_task_getsid(struct task_struct *p); 405 void security_task_getsecid(struct task_struct *p, u32 *secid); 406 int security_task_setnice(struct task_struct *p, int nice); 407 int security_task_setioprio(struct task_struct *p, int ioprio); 408 int security_task_getioprio(struct task_struct *p); 409 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 410 unsigned int flags); 411 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 412 struct rlimit *new_rlim); 413 int security_task_setscheduler(struct task_struct *p); 414 int security_task_getscheduler(struct task_struct *p); 415 int security_task_movememory(struct task_struct *p); 416 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 417 int sig, const struct cred *cred); 418 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 419 unsigned long arg4, unsigned long arg5); 420 void security_task_to_inode(struct task_struct *p, struct inode *inode); 421 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 422 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 423 int security_msg_msg_alloc(struct msg_msg *msg); 424 void security_msg_msg_free(struct msg_msg *msg); 425 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 426 void security_msg_queue_free(struct kern_ipc_perm *msq); 427 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 428 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 429 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 430 struct msg_msg *msg, int msqflg); 431 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 432 struct task_struct *target, long type, int mode); 433 int security_shm_alloc(struct kern_ipc_perm *shp); 434 void security_shm_free(struct kern_ipc_perm *shp); 435 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 436 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 437 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 438 int security_sem_alloc(struct kern_ipc_perm *sma); 439 void security_sem_free(struct kern_ipc_perm *sma); 440 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 441 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 442 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 443 unsigned nsops, int alter); 444 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 445 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 446 char **value); 447 int security_setprocattr(const char *lsm, const char *name, void *value, 448 size_t size); 449 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 450 int security_ismaclabel(const char *name); 451 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 452 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 453 void security_release_secctx(char *secdata, u32 seclen); 454 void security_inode_invalidate_secctx(struct inode *inode); 455 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 456 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 457 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 458 int security_locked_down(enum lockdown_reason what); 459 #else /* CONFIG_SECURITY */ 460 461 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 462 { 463 return 0; 464 } 465 466 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 467 { 468 return 0; 469 } 470 471 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 472 { 473 return 0; 474 } 475 476 static inline void security_free_mnt_opts(void **mnt_opts) 477 { 478 } 479 480 /* 481 * This is the default capabilities functionality. Most of these functions 482 * are just stubbed out, but a few must call the proper capable code. 483 */ 484 485 static inline int security_init(void) 486 { 487 return 0; 488 } 489 490 static inline int early_security_init(void) 491 { 492 return 0; 493 } 494 495 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 496 { 497 return 0; 498 } 499 500 static inline int security_binder_transaction(struct task_struct *from, 501 struct task_struct *to) 502 { 503 return 0; 504 } 505 506 static inline int security_binder_transfer_binder(struct task_struct *from, 507 struct task_struct *to) 508 { 509 return 0; 510 } 511 512 static inline int security_binder_transfer_file(struct task_struct *from, 513 struct task_struct *to, 514 struct file *file) 515 { 516 return 0; 517 } 518 519 static inline int security_ptrace_access_check(struct task_struct *child, 520 unsigned int mode) 521 { 522 return cap_ptrace_access_check(child, mode); 523 } 524 525 static inline int security_ptrace_traceme(struct task_struct *parent) 526 { 527 return cap_ptrace_traceme(parent); 528 } 529 530 static inline int security_capget(struct task_struct *target, 531 kernel_cap_t *effective, 532 kernel_cap_t *inheritable, 533 kernel_cap_t *permitted) 534 { 535 return cap_capget(target, effective, inheritable, permitted); 536 } 537 538 static inline int security_capset(struct cred *new, 539 const struct cred *old, 540 const kernel_cap_t *effective, 541 const kernel_cap_t *inheritable, 542 const kernel_cap_t *permitted) 543 { 544 return cap_capset(new, old, effective, inheritable, permitted); 545 } 546 547 static inline int security_capable(const struct cred *cred, 548 struct user_namespace *ns, 549 int cap, 550 unsigned int opts) 551 { 552 return cap_capable(cred, ns, cap, opts); 553 } 554 555 static inline int security_quotactl(int cmds, int type, int id, 556 struct super_block *sb) 557 { 558 return 0; 559 } 560 561 static inline int security_quota_on(struct dentry *dentry) 562 { 563 return 0; 564 } 565 566 static inline int security_syslog(int type) 567 { 568 return 0; 569 } 570 571 static inline int security_settime64(const struct timespec64 *ts, 572 const struct timezone *tz) 573 { 574 return cap_settime(ts, tz); 575 } 576 577 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 578 { 579 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 580 } 581 582 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 583 { 584 return 0; 585 } 586 587 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 588 struct file *file) 589 { 590 return cap_bprm_creds_from_file(bprm, file); 591 } 592 593 static inline int security_bprm_check(struct linux_binprm *bprm) 594 { 595 return 0; 596 } 597 598 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 599 { 600 } 601 602 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 603 { 604 } 605 606 static inline int security_fs_context_dup(struct fs_context *fc, 607 struct fs_context *src_fc) 608 { 609 return 0; 610 } 611 static inline int security_fs_context_parse_param(struct fs_context *fc, 612 struct fs_parameter *param) 613 { 614 return -ENOPARAM; 615 } 616 617 static inline int security_sb_alloc(struct super_block *sb) 618 { 619 return 0; 620 } 621 622 static inline void security_sb_free(struct super_block *sb) 623 { } 624 625 static inline int security_sb_eat_lsm_opts(char *options, 626 void **mnt_opts) 627 { 628 return 0; 629 } 630 631 static inline int security_sb_remount(struct super_block *sb, 632 void *mnt_opts) 633 { 634 return 0; 635 } 636 637 static inline int security_sb_kern_mount(struct super_block *sb) 638 { 639 return 0; 640 } 641 642 static inline int security_sb_show_options(struct seq_file *m, 643 struct super_block *sb) 644 { 645 return 0; 646 } 647 648 static inline int security_sb_statfs(struct dentry *dentry) 649 { 650 return 0; 651 } 652 653 static inline int security_sb_mount(const char *dev_name, const struct path *path, 654 const char *type, unsigned long flags, 655 void *data) 656 { 657 return 0; 658 } 659 660 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 661 { 662 return 0; 663 } 664 665 static inline int security_sb_pivotroot(const struct path *old_path, 666 const struct path *new_path) 667 { 668 return 0; 669 } 670 671 static inline int security_sb_set_mnt_opts(struct super_block *sb, 672 void *mnt_opts, 673 unsigned long kern_flags, 674 unsigned long *set_kern_flags) 675 { 676 return 0; 677 } 678 679 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 680 struct super_block *newsb, 681 unsigned long kern_flags, 682 unsigned long *set_kern_flags) 683 { 684 return 0; 685 } 686 687 static inline int security_add_mnt_opt(const char *option, const char *val, 688 int len, void **mnt_opts) 689 { 690 return 0; 691 } 692 693 static inline int security_move_mount(const struct path *from_path, 694 const struct path *to_path) 695 { 696 return 0; 697 } 698 699 static inline int security_path_notify(const struct path *path, u64 mask, 700 unsigned int obj_type) 701 { 702 return 0; 703 } 704 705 static inline int security_inode_alloc(struct inode *inode) 706 { 707 return 0; 708 } 709 710 static inline void security_inode_free(struct inode *inode) 711 { } 712 713 static inline int security_dentry_init_security(struct dentry *dentry, 714 int mode, 715 const struct qstr *name, 716 void **ctx, 717 u32 *ctxlen) 718 { 719 return -EOPNOTSUPP; 720 } 721 722 static inline int security_dentry_create_files_as(struct dentry *dentry, 723 int mode, struct qstr *name, 724 const struct cred *old, 725 struct cred *new) 726 { 727 return 0; 728 } 729 730 731 static inline int security_inode_init_security(struct inode *inode, 732 struct inode *dir, 733 const struct qstr *qstr, 734 const initxattrs xattrs, 735 void *fs_data) 736 { 737 return 0; 738 } 739 740 static inline int security_old_inode_init_security(struct inode *inode, 741 struct inode *dir, 742 const struct qstr *qstr, 743 const char **name, 744 void **value, size_t *len) 745 { 746 return -EOPNOTSUPP; 747 } 748 749 static inline int security_inode_create(struct inode *dir, 750 struct dentry *dentry, 751 umode_t mode) 752 { 753 return 0; 754 } 755 756 static inline int security_inode_link(struct dentry *old_dentry, 757 struct inode *dir, 758 struct dentry *new_dentry) 759 { 760 return 0; 761 } 762 763 static inline int security_inode_unlink(struct inode *dir, 764 struct dentry *dentry) 765 { 766 return 0; 767 } 768 769 static inline int security_inode_symlink(struct inode *dir, 770 struct dentry *dentry, 771 const char *old_name) 772 { 773 return 0; 774 } 775 776 static inline int security_inode_mkdir(struct inode *dir, 777 struct dentry *dentry, 778 int mode) 779 { 780 return 0; 781 } 782 783 static inline int security_inode_rmdir(struct inode *dir, 784 struct dentry *dentry) 785 { 786 return 0; 787 } 788 789 static inline int security_inode_mknod(struct inode *dir, 790 struct dentry *dentry, 791 int mode, dev_t dev) 792 { 793 return 0; 794 } 795 796 static inline int security_inode_rename(struct inode *old_dir, 797 struct dentry *old_dentry, 798 struct inode *new_dir, 799 struct dentry *new_dentry, 800 unsigned int flags) 801 { 802 return 0; 803 } 804 805 static inline int security_inode_readlink(struct dentry *dentry) 806 { 807 return 0; 808 } 809 810 static inline int security_inode_follow_link(struct dentry *dentry, 811 struct inode *inode, 812 bool rcu) 813 { 814 return 0; 815 } 816 817 static inline int security_inode_permission(struct inode *inode, int mask) 818 { 819 return 0; 820 } 821 822 static inline int security_inode_setattr(struct dentry *dentry, 823 struct iattr *attr) 824 { 825 return 0; 826 } 827 828 static inline int security_inode_getattr(const struct path *path) 829 { 830 return 0; 831 } 832 833 static inline int security_inode_setxattr(struct dentry *dentry, 834 const char *name, const void *value, size_t size, int flags) 835 { 836 return cap_inode_setxattr(dentry, name, value, size, flags); 837 } 838 839 static inline void security_inode_post_setxattr(struct dentry *dentry, 840 const char *name, const void *value, size_t size, int flags) 841 { } 842 843 static inline int security_inode_getxattr(struct dentry *dentry, 844 const char *name) 845 { 846 return 0; 847 } 848 849 static inline int security_inode_listxattr(struct dentry *dentry) 850 { 851 return 0; 852 } 853 854 static inline int security_inode_removexattr(struct dentry *dentry, 855 const char *name) 856 { 857 return cap_inode_removexattr(dentry, name); 858 } 859 860 static inline int security_inode_need_killpriv(struct dentry *dentry) 861 { 862 return cap_inode_need_killpriv(dentry); 863 } 864 865 static inline int security_inode_killpriv(struct dentry *dentry) 866 { 867 return cap_inode_killpriv(dentry); 868 } 869 870 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 871 { 872 return -EOPNOTSUPP; 873 } 874 875 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 876 { 877 return -EOPNOTSUPP; 878 } 879 880 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 881 { 882 return 0; 883 } 884 885 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 886 { 887 *secid = 0; 888 } 889 890 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 891 { 892 return 0; 893 } 894 895 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 896 struct kernfs_node *kn) 897 { 898 return 0; 899 } 900 901 static inline int security_inode_copy_up_xattr(const char *name) 902 { 903 return -EOPNOTSUPP; 904 } 905 906 static inline int security_file_permission(struct file *file, int mask) 907 { 908 return 0; 909 } 910 911 static inline int security_file_alloc(struct file *file) 912 { 913 return 0; 914 } 915 916 static inline void security_file_free(struct file *file) 917 { } 918 919 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 920 unsigned long arg) 921 { 922 return 0; 923 } 924 925 static inline int security_mmap_file(struct file *file, unsigned long prot, 926 unsigned long flags) 927 { 928 return 0; 929 } 930 931 static inline int security_mmap_addr(unsigned long addr) 932 { 933 return cap_mmap_addr(addr); 934 } 935 936 static inline int security_file_mprotect(struct vm_area_struct *vma, 937 unsigned long reqprot, 938 unsigned long prot) 939 { 940 return 0; 941 } 942 943 static inline int security_file_lock(struct file *file, unsigned int cmd) 944 { 945 return 0; 946 } 947 948 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 949 unsigned long arg) 950 { 951 return 0; 952 } 953 954 static inline void security_file_set_fowner(struct file *file) 955 { 956 return; 957 } 958 959 static inline int security_file_send_sigiotask(struct task_struct *tsk, 960 struct fown_struct *fown, 961 int sig) 962 { 963 return 0; 964 } 965 966 static inline int security_file_receive(struct file *file) 967 { 968 return 0; 969 } 970 971 static inline int security_file_open(struct file *file) 972 { 973 return 0; 974 } 975 976 static inline int security_task_alloc(struct task_struct *task, 977 unsigned long clone_flags) 978 { 979 return 0; 980 } 981 982 static inline void security_task_free(struct task_struct *task) 983 { } 984 985 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 986 { 987 return 0; 988 } 989 990 static inline void security_cred_free(struct cred *cred) 991 { } 992 993 static inline int security_prepare_creds(struct cred *new, 994 const struct cred *old, 995 gfp_t gfp) 996 { 997 return 0; 998 } 999 1000 static inline void security_transfer_creds(struct cred *new, 1001 const struct cred *old) 1002 { 1003 } 1004 1005 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1006 { 1007 return 0; 1008 } 1009 1010 static inline int security_kernel_create_files_as(struct cred *cred, 1011 struct inode *inode) 1012 { 1013 return 0; 1014 } 1015 1016 static inline int security_kernel_module_request(char *kmod_name) 1017 { 1018 return 0; 1019 } 1020 1021 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1022 { 1023 return 0; 1024 } 1025 1026 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1027 enum kernel_load_data_id id, 1028 char *description) 1029 { 1030 return 0; 1031 } 1032 1033 static inline int security_kernel_read_file(struct file *file, 1034 enum kernel_read_file_id id, 1035 bool contents) 1036 { 1037 return 0; 1038 } 1039 1040 static inline int security_kernel_post_read_file(struct file *file, 1041 char *buf, loff_t size, 1042 enum kernel_read_file_id id) 1043 { 1044 return 0; 1045 } 1046 1047 static inline int security_task_fix_setuid(struct cred *new, 1048 const struct cred *old, 1049 int flags) 1050 { 1051 return cap_task_fix_setuid(new, old, flags); 1052 } 1053 1054 static inline int security_task_fix_setgid(struct cred *new, 1055 const struct cred *old, 1056 int flags) 1057 { 1058 return 0; 1059 } 1060 1061 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1062 { 1063 return 0; 1064 } 1065 1066 static inline int security_task_getpgid(struct task_struct *p) 1067 { 1068 return 0; 1069 } 1070 1071 static inline int security_task_getsid(struct task_struct *p) 1072 { 1073 return 0; 1074 } 1075 1076 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1077 { 1078 *secid = 0; 1079 } 1080 1081 static inline int security_task_setnice(struct task_struct *p, int nice) 1082 { 1083 return cap_task_setnice(p, nice); 1084 } 1085 1086 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1087 { 1088 return cap_task_setioprio(p, ioprio); 1089 } 1090 1091 static inline int security_task_getioprio(struct task_struct *p) 1092 { 1093 return 0; 1094 } 1095 1096 static inline int security_task_prlimit(const struct cred *cred, 1097 const struct cred *tcred, 1098 unsigned int flags) 1099 { 1100 return 0; 1101 } 1102 1103 static inline int security_task_setrlimit(struct task_struct *p, 1104 unsigned int resource, 1105 struct rlimit *new_rlim) 1106 { 1107 return 0; 1108 } 1109 1110 static inline int security_task_setscheduler(struct task_struct *p) 1111 { 1112 return cap_task_setscheduler(p); 1113 } 1114 1115 static inline int security_task_getscheduler(struct task_struct *p) 1116 { 1117 return 0; 1118 } 1119 1120 static inline int security_task_movememory(struct task_struct *p) 1121 { 1122 return 0; 1123 } 1124 1125 static inline int security_task_kill(struct task_struct *p, 1126 struct kernel_siginfo *info, int sig, 1127 const struct cred *cred) 1128 { 1129 return 0; 1130 } 1131 1132 static inline int security_task_prctl(int option, unsigned long arg2, 1133 unsigned long arg3, 1134 unsigned long arg4, 1135 unsigned long arg5) 1136 { 1137 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1138 } 1139 1140 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1141 { } 1142 1143 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1144 short flag) 1145 { 1146 return 0; 1147 } 1148 1149 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1150 { 1151 *secid = 0; 1152 } 1153 1154 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1155 { 1156 return 0; 1157 } 1158 1159 static inline void security_msg_msg_free(struct msg_msg *msg) 1160 { } 1161 1162 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1163 { 1164 return 0; 1165 } 1166 1167 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1168 { } 1169 1170 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1171 int msqflg) 1172 { 1173 return 0; 1174 } 1175 1176 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1177 { 1178 return 0; 1179 } 1180 1181 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1182 struct msg_msg *msg, int msqflg) 1183 { 1184 return 0; 1185 } 1186 1187 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1188 struct msg_msg *msg, 1189 struct task_struct *target, 1190 long type, int mode) 1191 { 1192 return 0; 1193 } 1194 1195 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1196 { 1197 return 0; 1198 } 1199 1200 static inline void security_shm_free(struct kern_ipc_perm *shp) 1201 { } 1202 1203 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1204 int shmflg) 1205 { 1206 return 0; 1207 } 1208 1209 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1210 { 1211 return 0; 1212 } 1213 1214 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1215 char __user *shmaddr, int shmflg) 1216 { 1217 return 0; 1218 } 1219 1220 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1221 { 1222 return 0; 1223 } 1224 1225 static inline void security_sem_free(struct kern_ipc_perm *sma) 1226 { } 1227 1228 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1229 { 1230 return 0; 1231 } 1232 1233 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1234 { 1235 return 0; 1236 } 1237 1238 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1239 struct sembuf *sops, unsigned nsops, 1240 int alter) 1241 { 1242 return 0; 1243 } 1244 1245 static inline void security_d_instantiate(struct dentry *dentry, 1246 struct inode *inode) 1247 { } 1248 1249 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1250 char *name, char **value) 1251 { 1252 return -EINVAL; 1253 } 1254 1255 static inline int security_setprocattr(const char *lsm, char *name, 1256 void *value, size_t size) 1257 { 1258 return -EINVAL; 1259 } 1260 1261 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1262 { 1263 return 0; 1264 } 1265 1266 static inline int security_ismaclabel(const char *name) 1267 { 1268 return 0; 1269 } 1270 1271 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1272 { 1273 return -EOPNOTSUPP; 1274 } 1275 1276 static inline int security_secctx_to_secid(const char *secdata, 1277 u32 seclen, 1278 u32 *secid) 1279 { 1280 return -EOPNOTSUPP; 1281 } 1282 1283 static inline void security_release_secctx(char *secdata, u32 seclen) 1284 { 1285 } 1286 1287 static inline void security_inode_invalidate_secctx(struct inode *inode) 1288 { 1289 } 1290 1291 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1292 { 1293 return -EOPNOTSUPP; 1294 } 1295 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1296 { 1297 return -EOPNOTSUPP; 1298 } 1299 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1300 { 1301 return -EOPNOTSUPP; 1302 } 1303 static inline int security_locked_down(enum lockdown_reason what) 1304 { 1305 return 0; 1306 } 1307 #endif /* CONFIG_SECURITY */ 1308 1309 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1310 int security_post_notification(const struct cred *w_cred, 1311 const struct cred *cred, 1312 struct watch_notification *n); 1313 #else 1314 static inline int security_post_notification(const struct cred *w_cred, 1315 const struct cred *cred, 1316 struct watch_notification *n) 1317 { 1318 return 0; 1319 } 1320 #endif 1321 1322 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1323 int security_watch_key(struct key *key); 1324 #else 1325 static inline int security_watch_key(struct key *key) 1326 { 1327 return 0; 1328 } 1329 #endif 1330 1331 #ifdef CONFIG_SECURITY_NETWORK 1332 1333 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1334 int security_unix_may_send(struct socket *sock, struct socket *other); 1335 int security_socket_create(int family, int type, int protocol, int kern); 1336 int security_socket_post_create(struct socket *sock, int family, 1337 int type, int protocol, int kern); 1338 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1339 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1340 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1341 int security_socket_listen(struct socket *sock, int backlog); 1342 int security_socket_accept(struct socket *sock, struct socket *newsock); 1343 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1344 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1345 int size, int flags); 1346 int security_socket_getsockname(struct socket *sock); 1347 int security_socket_getpeername(struct socket *sock); 1348 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1349 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1350 int security_socket_shutdown(struct socket *sock, int how); 1351 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1352 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1353 int __user *optlen, unsigned len); 1354 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1355 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1356 void security_sk_free(struct sock *sk); 1357 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1358 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1359 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1360 void security_sock_graft(struct sock*sk, struct socket *parent); 1361 int security_inet_conn_request(struct sock *sk, 1362 struct sk_buff *skb, struct request_sock *req); 1363 void security_inet_csk_clone(struct sock *newsk, 1364 const struct request_sock *req); 1365 void security_inet_conn_established(struct sock *sk, 1366 struct sk_buff *skb); 1367 int security_secmark_relabel_packet(u32 secid); 1368 void security_secmark_refcount_inc(void); 1369 void security_secmark_refcount_dec(void); 1370 int security_tun_dev_alloc_security(void **security); 1371 void security_tun_dev_free_security(void *security); 1372 int security_tun_dev_create(void); 1373 int security_tun_dev_attach_queue(void *security); 1374 int security_tun_dev_attach(struct sock *sk, void *security); 1375 int security_tun_dev_open(void *security); 1376 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1377 int security_sctp_bind_connect(struct sock *sk, int optname, 1378 struct sockaddr *address, int addrlen); 1379 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1380 struct sock *newsk); 1381 1382 #else /* CONFIG_SECURITY_NETWORK */ 1383 static inline int security_unix_stream_connect(struct sock *sock, 1384 struct sock *other, 1385 struct sock *newsk) 1386 { 1387 return 0; 1388 } 1389 1390 static inline int security_unix_may_send(struct socket *sock, 1391 struct socket *other) 1392 { 1393 return 0; 1394 } 1395 1396 static inline int security_socket_create(int family, int type, 1397 int protocol, int kern) 1398 { 1399 return 0; 1400 } 1401 1402 static inline int security_socket_post_create(struct socket *sock, 1403 int family, 1404 int type, 1405 int protocol, int kern) 1406 { 1407 return 0; 1408 } 1409 1410 static inline int security_socket_socketpair(struct socket *socka, 1411 struct socket *sockb) 1412 { 1413 return 0; 1414 } 1415 1416 static inline int security_socket_bind(struct socket *sock, 1417 struct sockaddr *address, 1418 int addrlen) 1419 { 1420 return 0; 1421 } 1422 1423 static inline int security_socket_connect(struct socket *sock, 1424 struct sockaddr *address, 1425 int addrlen) 1426 { 1427 return 0; 1428 } 1429 1430 static inline int security_socket_listen(struct socket *sock, int backlog) 1431 { 1432 return 0; 1433 } 1434 1435 static inline int security_socket_accept(struct socket *sock, 1436 struct socket *newsock) 1437 { 1438 return 0; 1439 } 1440 1441 static inline int security_socket_sendmsg(struct socket *sock, 1442 struct msghdr *msg, int size) 1443 { 1444 return 0; 1445 } 1446 1447 static inline int security_socket_recvmsg(struct socket *sock, 1448 struct msghdr *msg, int size, 1449 int flags) 1450 { 1451 return 0; 1452 } 1453 1454 static inline int security_socket_getsockname(struct socket *sock) 1455 { 1456 return 0; 1457 } 1458 1459 static inline int security_socket_getpeername(struct socket *sock) 1460 { 1461 return 0; 1462 } 1463 1464 static inline int security_socket_getsockopt(struct socket *sock, 1465 int level, int optname) 1466 { 1467 return 0; 1468 } 1469 1470 static inline int security_socket_setsockopt(struct socket *sock, 1471 int level, int optname) 1472 { 1473 return 0; 1474 } 1475 1476 static inline int security_socket_shutdown(struct socket *sock, int how) 1477 { 1478 return 0; 1479 } 1480 static inline int security_sock_rcv_skb(struct sock *sk, 1481 struct sk_buff *skb) 1482 { 1483 return 0; 1484 } 1485 1486 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1487 int __user *optlen, unsigned len) 1488 { 1489 return -ENOPROTOOPT; 1490 } 1491 1492 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1493 { 1494 return -ENOPROTOOPT; 1495 } 1496 1497 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1498 { 1499 return 0; 1500 } 1501 1502 static inline void security_sk_free(struct sock *sk) 1503 { 1504 } 1505 1506 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1507 { 1508 } 1509 1510 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1511 { 1512 } 1513 1514 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1515 { 1516 } 1517 1518 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1519 { 1520 } 1521 1522 static inline int security_inet_conn_request(struct sock *sk, 1523 struct sk_buff *skb, struct request_sock *req) 1524 { 1525 return 0; 1526 } 1527 1528 static inline void security_inet_csk_clone(struct sock *newsk, 1529 const struct request_sock *req) 1530 { 1531 } 1532 1533 static inline void security_inet_conn_established(struct sock *sk, 1534 struct sk_buff *skb) 1535 { 1536 } 1537 1538 static inline int security_secmark_relabel_packet(u32 secid) 1539 { 1540 return 0; 1541 } 1542 1543 static inline void security_secmark_refcount_inc(void) 1544 { 1545 } 1546 1547 static inline void security_secmark_refcount_dec(void) 1548 { 1549 } 1550 1551 static inline int security_tun_dev_alloc_security(void **security) 1552 { 1553 return 0; 1554 } 1555 1556 static inline void security_tun_dev_free_security(void *security) 1557 { 1558 } 1559 1560 static inline int security_tun_dev_create(void) 1561 { 1562 return 0; 1563 } 1564 1565 static inline int security_tun_dev_attach_queue(void *security) 1566 { 1567 return 0; 1568 } 1569 1570 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1571 { 1572 return 0; 1573 } 1574 1575 static inline int security_tun_dev_open(void *security) 1576 { 1577 return 0; 1578 } 1579 1580 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1581 struct sk_buff *skb) 1582 { 1583 return 0; 1584 } 1585 1586 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1587 struct sockaddr *address, 1588 int addrlen) 1589 { 1590 return 0; 1591 } 1592 1593 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1594 struct sock *sk, 1595 struct sock *newsk) 1596 { 1597 } 1598 #endif /* CONFIG_SECURITY_NETWORK */ 1599 1600 #ifdef CONFIG_SECURITY_INFINIBAND 1601 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1602 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1603 int security_ib_alloc_security(void **sec); 1604 void security_ib_free_security(void *sec); 1605 #else /* CONFIG_SECURITY_INFINIBAND */ 1606 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1607 { 1608 return 0; 1609 } 1610 1611 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1612 { 1613 return 0; 1614 } 1615 1616 static inline int security_ib_alloc_security(void **sec) 1617 { 1618 return 0; 1619 } 1620 1621 static inline void security_ib_free_security(void *sec) 1622 { 1623 } 1624 #endif /* CONFIG_SECURITY_INFINIBAND */ 1625 1626 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1627 1628 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1629 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1630 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1631 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1632 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1633 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1634 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1635 struct xfrm_sec_ctx *polsec, u32 secid); 1636 int security_xfrm_state_delete(struct xfrm_state *x); 1637 void security_xfrm_state_free(struct xfrm_state *x); 1638 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1639 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1640 struct xfrm_policy *xp, 1641 const struct flowi *fl); 1642 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1643 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1644 1645 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1646 1647 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1648 struct xfrm_user_sec_ctx *sec_ctx, 1649 gfp_t gfp) 1650 { 1651 return 0; 1652 } 1653 1654 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1655 { 1656 return 0; 1657 } 1658 1659 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1660 { 1661 } 1662 1663 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1664 { 1665 return 0; 1666 } 1667 1668 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1669 struct xfrm_user_sec_ctx *sec_ctx) 1670 { 1671 return 0; 1672 } 1673 1674 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1675 struct xfrm_sec_ctx *polsec, u32 secid) 1676 { 1677 return 0; 1678 } 1679 1680 static inline void security_xfrm_state_free(struct xfrm_state *x) 1681 { 1682 } 1683 1684 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1685 { 1686 return 0; 1687 } 1688 1689 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1690 { 1691 return 0; 1692 } 1693 1694 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1695 struct xfrm_policy *xp, const struct flowi *fl) 1696 { 1697 return 1; 1698 } 1699 1700 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1701 { 1702 return 0; 1703 } 1704 1705 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1706 { 1707 } 1708 1709 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1710 1711 #ifdef CONFIG_SECURITY_PATH 1712 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1713 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1714 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1715 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1716 unsigned int dev); 1717 int security_path_truncate(const struct path *path); 1718 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1719 const char *old_name); 1720 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1721 struct dentry *new_dentry); 1722 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1723 const struct path *new_dir, struct dentry *new_dentry, 1724 unsigned int flags); 1725 int security_path_chmod(const struct path *path, umode_t mode); 1726 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1727 int security_path_chroot(const struct path *path); 1728 #else /* CONFIG_SECURITY_PATH */ 1729 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1730 { 1731 return 0; 1732 } 1733 1734 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1735 umode_t mode) 1736 { 1737 return 0; 1738 } 1739 1740 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1741 { 1742 return 0; 1743 } 1744 1745 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1746 umode_t mode, unsigned int dev) 1747 { 1748 return 0; 1749 } 1750 1751 static inline int security_path_truncate(const struct path *path) 1752 { 1753 return 0; 1754 } 1755 1756 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1757 const char *old_name) 1758 { 1759 return 0; 1760 } 1761 1762 static inline int security_path_link(struct dentry *old_dentry, 1763 const struct path *new_dir, 1764 struct dentry *new_dentry) 1765 { 1766 return 0; 1767 } 1768 1769 static inline int security_path_rename(const struct path *old_dir, 1770 struct dentry *old_dentry, 1771 const struct path *new_dir, 1772 struct dentry *new_dentry, 1773 unsigned int flags) 1774 { 1775 return 0; 1776 } 1777 1778 static inline int security_path_chmod(const struct path *path, umode_t mode) 1779 { 1780 return 0; 1781 } 1782 1783 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1784 { 1785 return 0; 1786 } 1787 1788 static inline int security_path_chroot(const struct path *path) 1789 { 1790 return 0; 1791 } 1792 #endif /* CONFIG_SECURITY_PATH */ 1793 1794 #ifdef CONFIG_KEYS 1795 #ifdef CONFIG_SECURITY 1796 1797 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1798 void security_key_free(struct key *key); 1799 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1800 enum key_need_perm need_perm); 1801 int security_key_getsecurity(struct key *key, char **_buffer); 1802 1803 #else 1804 1805 static inline int security_key_alloc(struct key *key, 1806 const struct cred *cred, 1807 unsigned long flags) 1808 { 1809 return 0; 1810 } 1811 1812 static inline void security_key_free(struct key *key) 1813 { 1814 } 1815 1816 static inline int security_key_permission(key_ref_t key_ref, 1817 const struct cred *cred, 1818 enum key_need_perm need_perm) 1819 { 1820 return 0; 1821 } 1822 1823 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1824 { 1825 *_buffer = NULL; 1826 return 0; 1827 } 1828 1829 #endif 1830 #endif /* CONFIG_KEYS */ 1831 1832 #ifdef CONFIG_AUDIT 1833 #ifdef CONFIG_SECURITY 1834 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1835 int security_audit_rule_known(struct audit_krule *krule); 1836 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1837 void security_audit_rule_free(void *lsmrule); 1838 1839 #else 1840 1841 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1842 void **lsmrule) 1843 { 1844 return 0; 1845 } 1846 1847 static inline int security_audit_rule_known(struct audit_krule *krule) 1848 { 1849 return 0; 1850 } 1851 1852 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1853 void *lsmrule) 1854 { 1855 return 0; 1856 } 1857 1858 static inline void security_audit_rule_free(void *lsmrule) 1859 { } 1860 1861 #endif /* CONFIG_SECURITY */ 1862 #endif /* CONFIG_AUDIT */ 1863 1864 #ifdef CONFIG_SECURITYFS 1865 1866 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1867 struct dentry *parent, void *data, 1868 const struct file_operations *fops); 1869 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1870 struct dentry *securityfs_create_symlink(const char *name, 1871 struct dentry *parent, 1872 const char *target, 1873 const struct inode_operations *iops); 1874 extern void securityfs_remove(struct dentry *dentry); 1875 1876 #else /* CONFIG_SECURITYFS */ 1877 1878 static inline struct dentry *securityfs_create_dir(const char *name, 1879 struct dentry *parent) 1880 { 1881 return ERR_PTR(-ENODEV); 1882 } 1883 1884 static inline struct dentry *securityfs_create_file(const char *name, 1885 umode_t mode, 1886 struct dentry *parent, 1887 void *data, 1888 const struct file_operations *fops) 1889 { 1890 return ERR_PTR(-ENODEV); 1891 } 1892 1893 static inline struct dentry *securityfs_create_symlink(const char *name, 1894 struct dentry *parent, 1895 const char *target, 1896 const struct inode_operations *iops) 1897 { 1898 return ERR_PTR(-ENODEV); 1899 } 1900 1901 static inline void securityfs_remove(struct dentry *dentry) 1902 {} 1903 1904 #endif 1905 1906 #ifdef CONFIG_BPF_SYSCALL 1907 union bpf_attr; 1908 struct bpf_map; 1909 struct bpf_prog; 1910 struct bpf_prog_aux; 1911 #ifdef CONFIG_SECURITY 1912 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1913 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1914 extern int security_bpf_prog(struct bpf_prog *prog); 1915 extern int security_bpf_map_alloc(struct bpf_map *map); 1916 extern void security_bpf_map_free(struct bpf_map *map); 1917 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1918 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1919 #else 1920 static inline int security_bpf(int cmd, union bpf_attr *attr, 1921 unsigned int size) 1922 { 1923 return 0; 1924 } 1925 1926 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1927 { 1928 return 0; 1929 } 1930 1931 static inline int security_bpf_prog(struct bpf_prog *prog) 1932 { 1933 return 0; 1934 } 1935 1936 static inline int security_bpf_map_alloc(struct bpf_map *map) 1937 { 1938 return 0; 1939 } 1940 1941 static inline void security_bpf_map_free(struct bpf_map *map) 1942 { } 1943 1944 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1945 { 1946 return 0; 1947 } 1948 1949 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1950 { } 1951 #endif /* CONFIG_SECURITY */ 1952 #endif /* CONFIG_BPF_SYSCALL */ 1953 1954 #ifdef CONFIG_PERF_EVENTS 1955 struct perf_event_attr; 1956 struct perf_event; 1957 1958 #ifdef CONFIG_SECURITY 1959 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1960 extern int security_perf_event_alloc(struct perf_event *event); 1961 extern void security_perf_event_free(struct perf_event *event); 1962 extern int security_perf_event_read(struct perf_event *event); 1963 extern int security_perf_event_write(struct perf_event *event); 1964 #else 1965 static inline int security_perf_event_open(struct perf_event_attr *attr, 1966 int type) 1967 { 1968 return 0; 1969 } 1970 1971 static inline int security_perf_event_alloc(struct perf_event *event) 1972 { 1973 return 0; 1974 } 1975 1976 static inline void security_perf_event_free(struct perf_event *event) 1977 { 1978 } 1979 1980 static inline int security_perf_event_read(struct perf_event *event) 1981 { 1982 return 0; 1983 } 1984 1985 static inline int security_perf_event_write(struct perf_event *event) 1986 { 1987 return 0; 1988 } 1989 #endif /* CONFIG_SECURITY */ 1990 #endif /* CONFIG_PERF_EVENTS */ 1991 1992 #endif /* ! __LINUX_SECURITY_H */ 1993