1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/key.h> 27 #include <linux/capability.h> 28 #include <linux/fs.h> 29 #include <linux/slab.h> 30 #include <linux/err.h> 31 #include <linux/string.h> 32 #include <linux/mm.h> 33 34 struct linux_binprm; 35 struct cred; 36 struct rlimit; 37 struct kernel_siginfo; 38 struct sembuf; 39 struct kern_ipc_perm; 40 struct audit_context; 41 struct super_block; 42 struct inode; 43 struct dentry; 44 struct file; 45 struct vfsmount; 46 struct path; 47 struct qstr; 48 struct iattr; 49 struct fown_struct; 50 struct file_operations; 51 struct msg_msg; 52 struct xattr; 53 struct kernfs_node; 54 struct xfrm_sec_ctx; 55 struct mm_struct; 56 struct fs_context; 57 struct fs_parameter; 58 enum fs_value_type; 59 struct watch; 60 struct watch_notification; 61 62 /* Default (no) options for the capable function */ 63 #define CAP_OPT_NONE 0x0 64 /* If capable should audit the security request */ 65 #define CAP_OPT_NOAUDIT BIT(1) 66 /* If capable is being called by a setid function */ 67 #define CAP_OPT_INSETID BIT(2) 68 69 /* LSM Agnostic defines for fs_context::lsm_flags */ 70 #define SECURITY_LSM_NATIVE_LABELS 1 71 72 struct ctl_table; 73 struct audit_krule; 74 struct user_namespace; 75 struct timezone; 76 77 enum lsm_event { 78 LSM_POLICY_CHANGE, 79 }; 80 81 /* 82 * These are reasons that can be passed to the security_locked_down() 83 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 84 * ability for userland to modify kernel code) are placed before 85 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 86 * confidentiality (ie, the ability for userland to extract 87 * information from the running kernel that would otherwise be 88 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 89 * 90 * LSM authors should note that the semantics of any given lockdown 91 * reason are not guaranteed to be stable - the same reason may block 92 * one set of features in one kernel release, and a slightly different 93 * set of features in a later kernel release. LSMs that seek to expose 94 * lockdown policy at any level of granularity other than "none", 95 * "integrity" or "confidentiality" are responsible for either 96 * ensuring that they expose a consistent level of functionality to 97 * userland, or ensuring that userland is aware that this is 98 * potentially a moving target. It is easy to misuse this information 99 * in a way that could break userspace. Please be careful not to do 100 * so. 101 * 102 * If you add to this, remember to extend lockdown_reasons in 103 * security/lockdown/lockdown.c. 104 */ 105 enum lockdown_reason { 106 LOCKDOWN_NONE, 107 LOCKDOWN_MODULE_SIGNATURE, 108 LOCKDOWN_DEV_MEM, 109 LOCKDOWN_EFI_TEST, 110 LOCKDOWN_KEXEC, 111 LOCKDOWN_HIBERNATION, 112 LOCKDOWN_PCI_ACCESS, 113 LOCKDOWN_IOPORT, 114 LOCKDOWN_MSR, 115 LOCKDOWN_ACPI_TABLES, 116 LOCKDOWN_PCMCIA_CIS, 117 LOCKDOWN_TIOCSSERIAL, 118 LOCKDOWN_MODULE_PARAMETERS, 119 LOCKDOWN_MMIOTRACE, 120 LOCKDOWN_DEBUGFS, 121 LOCKDOWN_XMON_WR, 122 LOCKDOWN_INTEGRITY_MAX, 123 LOCKDOWN_KCORE, 124 LOCKDOWN_KPROBES, 125 LOCKDOWN_BPF_READ, 126 LOCKDOWN_PERF, 127 LOCKDOWN_TRACEFS, 128 LOCKDOWN_XMON_RW, 129 LOCKDOWN_CONFIDENTIALITY_MAX, 130 }; 131 132 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 133 134 /* These functions are in security/commoncap.c */ 135 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 136 int cap, unsigned int opts); 137 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 138 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 139 extern int cap_ptrace_traceme(struct task_struct *parent); 140 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 141 extern int cap_capset(struct cred *new, const struct cred *old, 142 const kernel_cap_t *effective, 143 const kernel_cap_t *inheritable, 144 const kernel_cap_t *permitted); 145 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 146 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 147 const void *value, size_t size, int flags); 148 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 149 extern int cap_inode_need_killpriv(struct dentry *dentry); 150 extern int cap_inode_killpriv(struct dentry *dentry); 151 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 152 void **buffer, bool alloc); 153 extern int cap_mmap_addr(unsigned long addr); 154 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 155 unsigned long prot, unsigned long flags); 156 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 157 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 158 unsigned long arg4, unsigned long arg5); 159 extern int cap_task_setscheduler(struct task_struct *p); 160 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 161 extern int cap_task_setnice(struct task_struct *p, int nice); 162 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 163 164 struct msghdr; 165 struct sk_buff; 166 struct sock; 167 struct sockaddr; 168 struct socket; 169 struct flowi; 170 struct dst_entry; 171 struct xfrm_selector; 172 struct xfrm_policy; 173 struct xfrm_state; 174 struct xfrm_user_sec_ctx; 175 struct seq_file; 176 struct sctp_endpoint; 177 178 #ifdef CONFIG_MMU 179 extern unsigned long mmap_min_addr; 180 extern unsigned long dac_mmap_min_addr; 181 #else 182 #define mmap_min_addr 0UL 183 #define dac_mmap_min_addr 0UL 184 #endif 185 186 /* 187 * Values used in the task_security_ops calls 188 */ 189 /* setuid or setgid, id0 == uid or gid */ 190 #define LSM_SETID_ID 1 191 192 /* setreuid or setregid, id0 == real, id1 == eff */ 193 #define LSM_SETID_RE 2 194 195 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 196 #define LSM_SETID_RES 4 197 198 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 199 #define LSM_SETID_FS 8 200 201 /* Flags for security_task_prlimit(). */ 202 #define LSM_PRLIMIT_READ 1 203 #define LSM_PRLIMIT_WRITE 2 204 205 /* forward declares to avoid warnings */ 206 struct sched_param; 207 struct request_sock; 208 209 /* bprm->unsafe reasons */ 210 #define LSM_UNSAFE_SHARE 1 211 #define LSM_UNSAFE_PTRACE 2 212 #define LSM_UNSAFE_NO_NEW_PRIVS 4 213 214 #ifdef CONFIG_MMU 215 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 216 void *buffer, size_t *lenp, loff_t *ppos); 217 #endif 218 219 /* security_inode_init_security callback function to write xattrs */ 220 typedef int (*initxattrs) (struct inode *inode, 221 const struct xattr *xattr_array, void *fs_data); 222 223 224 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 225 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 226 #define __data_id_stringify(dummy, str) #str, 227 228 enum kernel_load_data_id { 229 __kernel_read_file_id(__data_id_enumify) 230 }; 231 232 static const char * const kernel_load_data_str[] = { 233 __kernel_read_file_id(__data_id_stringify) 234 }; 235 236 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 237 { 238 if ((unsigned)id >= LOADING_MAX_ID) 239 return kernel_load_data_str[LOADING_UNKNOWN]; 240 241 return kernel_load_data_str[id]; 242 } 243 244 #ifdef CONFIG_SECURITY 245 246 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 247 int register_blocking_lsm_notifier(struct notifier_block *nb); 248 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 249 250 /* prototypes */ 251 extern int security_init(void); 252 extern int early_security_init(void); 253 254 /* Security operations */ 255 int security_binder_set_context_mgr(struct task_struct *mgr); 256 int security_binder_transaction(struct task_struct *from, 257 struct task_struct *to); 258 int security_binder_transfer_binder(struct task_struct *from, 259 struct task_struct *to); 260 int security_binder_transfer_file(struct task_struct *from, 261 struct task_struct *to, struct file *file); 262 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 263 int security_ptrace_traceme(struct task_struct *parent); 264 int security_capget(struct task_struct *target, 265 kernel_cap_t *effective, 266 kernel_cap_t *inheritable, 267 kernel_cap_t *permitted); 268 int security_capset(struct cred *new, const struct cred *old, 269 const kernel_cap_t *effective, 270 const kernel_cap_t *inheritable, 271 const kernel_cap_t *permitted); 272 int security_capable(const struct cred *cred, 273 struct user_namespace *ns, 274 int cap, 275 unsigned int opts); 276 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 277 int security_quota_on(struct dentry *dentry); 278 int security_syslog(int type); 279 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 280 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 281 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 282 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 283 int security_bprm_check(struct linux_binprm *bprm); 284 void security_bprm_committing_creds(struct linux_binprm *bprm); 285 void security_bprm_committed_creds(struct linux_binprm *bprm); 286 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 287 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 288 int security_sb_alloc(struct super_block *sb); 289 void security_sb_free(struct super_block *sb); 290 void security_free_mnt_opts(void **mnt_opts); 291 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 292 int security_sb_remount(struct super_block *sb, void *mnt_opts); 293 int security_sb_kern_mount(struct super_block *sb); 294 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 295 int security_sb_statfs(struct dentry *dentry); 296 int security_sb_mount(const char *dev_name, const struct path *path, 297 const char *type, unsigned long flags, void *data); 298 int security_sb_umount(struct vfsmount *mnt, int flags); 299 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 300 int security_sb_set_mnt_opts(struct super_block *sb, 301 void *mnt_opts, 302 unsigned long kern_flags, 303 unsigned long *set_kern_flags); 304 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 305 struct super_block *newsb, 306 unsigned long kern_flags, 307 unsigned long *set_kern_flags); 308 int security_add_mnt_opt(const char *option, const char *val, 309 int len, void **mnt_opts); 310 int security_move_mount(const struct path *from_path, const struct path *to_path); 311 int security_dentry_init_security(struct dentry *dentry, int mode, 312 const struct qstr *name, void **ctx, 313 u32 *ctxlen); 314 int security_dentry_create_files_as(struct dentry *dentry, int mode, 315 struct qstr *name, 316 const struct cred *old, 317 struct cred *new); 318 int security_path_notify(const struct path *path, u64 mask, 319 unsigned int obj_type); 320 int security_inode_alloc(struct inode *inode); 321 void security_inode_free(struct inode *inode); 322 int security_inode_init_security(struct inode *inode, struct inode *dir, 323 const struct qstr *qstr, 324 initxattrs initxattrs, void *fs_data); 325 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 326 const struct qstr *qstr, const char **name, 327 void **value, size_t *len); 328 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 329 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 330 struct dentry *new_dentry); 331 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 332 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 333 const char *old_name); 334 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 335 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 336 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 337 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 338 struct inode *new_dir, struct dentry *new_dentry, 339 unsigned int flags); 340 int security_inode_readlink(struct dentry *dentry); 341 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 342 bool rcu); 343 int security_inode_permission(struct inode *inode, int mask); 344 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 345 int security_inode_getattr(const struct path *path); 346 int security_inode_setxattr(struct dentry *dentry, const char *name, 347 const void *value, size_t size, int flags); 348 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 349 const void *value, size_t size, int flags); 350 int security_inode_getxattr(struct dentry *dentry, const char *name); 351 int security_inode_listxattr(struct dentry *dentry); 352 int security_inode_removexattr(struct dentry *dentry, const char *name); 353 int security_inode_need_killpriv(struct dentry *dentry); 354 int security_inode_killpriv(struct dentry *dentry); 355 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 356 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 357 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 358 void security_inode_getsecid(struct inode *inode, u32 *secid); 359 int security_inode_copy_up(struct dentry *src, struct cred **new); 360 int security_inode_copy_up_xattr(const char *name); 361 int security_kernfs_init_security(struct kernfs_node *kn_dir, 362 struct kernfs_node *kn); 363 int security_file_permission(struct file *file, int mask); 364 int security_file_alloc(struct file *file); 365 void security_file_free(struct file *file); 366 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 367 int security_mmap_file(struct file *file, unsigned long prot, 368 unsigned long flags); 369 int security_mmap_addr(unsigned long addr); 370 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 371 unsigned long prot); 372 int security_file_lock(struct file *file, unsigned int cmd); 373 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 374 void security_file_set_fowner(struct file *file); 375 int security_file_send_sigiotask(struct task_struct *tsk, 376 struct fown_struct *fown, int sig); 377 int security_file_receive(struct file *file); 378 int security_file_open(struct file *file); 379 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 380 void security_task_free(struct task_struct *task); 381 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 382 void security_cred_free(struct cred *cred); 383 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 384 void security_transfer_creds(struct cred *new, const struct cred *old); 385 void security_cred_getsecid(const struct cred *c, u32 *secid); 386 int security_kernel_act_as(struct cred *new, u32 secid); 387 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 388 int security_kernel_module_request(char *kmod_name); 389 int security_kernel_load_data(enum kernel_load_data_id id); 390 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 391 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 392 enum kernel_read_file_id id); 393 int security_task_fix_setuid(struct cred *new, const struct cred *old, 394 int flags); 395 int security_task_fix_setgid(struct cred *new, const struct cred *old, 396 int flags); 397 int security_task_setpgid(struct task_struct *p, pid_t pgid); 398 int security_task_getpgid(struct task_struct *p); 399 int security_task_getsid(struct task_struct *p); 400 void security_task_getsecid(struct task_struct *p, u32 *secid); 401 int security_task_setnice(struct task_struct *p, int nice); 402 int security_task_setioprio(struct task_struct *p, int ioprio); 403 int security_task_getioprio(struct task_struct *p); 404 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 405 unsigned int flags); 406 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 407 struct rlimit *new_rlim); 408 int security_task_setscheduler(struct task_struct *p); 409 int security_task_getscheduler(struct task_struct *p); 410 int security_task_movememory(struct task_struct *p); 411 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 412 int sig, const struct cred *cred); 413 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 414 unsigned long arg4, unsigned long arg5); 415 void security_task_to_inode(struct task_struct *p, struct inode *inode); 416 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 417 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 418 int security_msg_msg_alloc(struct msg_msg *msg); 419 void security_msg_msg_free(struct msg_msg *msg); 420 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 421 void security_msg_queue_free(struct kern_ipc_perm *msq); 422 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 423 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 424 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 425 struct msg_msg *msg, int msqflg); 426 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 427 struct task_struct *target, long type, int mode); 428 int security_shm_alloc(struct kern_ipc_perm *shp); 429 void security_shm_free(struct kern_ipc_perm *shp); 430 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 431 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 432 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 433 int security_sem_alloc(struct kern_ipc_perm *sma); 434 void security_sem_free(struct kern_ipc_perm *sma); 435 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 436 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 437 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 438 unsigned nsops, int alter); 439 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 440 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 441 char **value); 442 int security_setprocattr(const char *lsm, const char *name, void *value, 443 size_t size); 444 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 445 int security_ismaclabel(const char *name); 446 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 447 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 448 void security_release_secctx(char *secdata, u32 seclen); 449 void security_inode_invalidate_secctx(struct inode *inode); 450 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 451 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 452 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 453 int security_locked_down(enum lockdown_reason what); 454 #else /* CONFIG_SECURITY */ 455 456 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 457 { 458 return 0; 459 } 460 461 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 462 { 463 return 0; 464 } 465 466 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 467 { 468 return 0; 469 } 470 471 static inline void security_free_mnt_opts(void **mnt_opts) 472 { 473 } 474 475 /* 476 * This is the default capabilities functionality. Most of these functions 477 * are just stubbed out, but a few must call the proper capable code. 478 */ 479 480 static inline int security_init(void) 481 { 482 return 0; 483 } 484 485 static inline int early_security_init(void) 486 { 487 return 0; 488 } 489 490 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 491 { 492 return 0; 493 } 494 495 static inline int security_binder_transaction(struct task_struct *from, 496 struct task_struct *to) 497 { 498 return 0; 499 } 500 501 static inline int security_binder_transfer_binder(struct task_struct *from, 502 struct task_struct *to) 503 { 504 return 0; 505 } 506 507 static inline int security_binder_transfer_file(struct task_struct *from, 508 struct task_struct *to, 509 struct file *file) 510 { 511 return 0; 512 } 513 514 static inline int security_ptrace_access_check(struct task_struct *child, 515 unsigned int mode) 516 { 517 return cap_ptrace_access_check(child, mode); 518 } 519 520 static inline int security_ptrace_traceme(struct task_struct *parent) 521 { 522 return cap_ptrace_traceme(parent); 523 } 524 525 static inline int security_capget(struct task_struct *target, 526 kernel_cap_t *effective, 527 kernel_cap_t *inheritable, 528 kernel_cap_t *permitted) 529 { 530 return cap_capget(target, effective, inheritable, permitted); 531 } 532 533 static inline int security_capset(struct cred *new, 534 const struct cred *old, 535 const kernel_cap_t *effective, 536 const kernel_cap_t *inheritable, 537 const kernel_cap_t *permitted) 538 { 539 return cap_capset(new, old, effective, inheritable, permitted); 540 } 541 542 static inline int security_capable(const struct cred *cred, 543 struct user_namespace *ns, 544 int cap, 545 unsigned int opts) 546 { 547 return cap_capable(cred, ns, cap, opts); 548 } 549 550 static inline int security_quotactl(int cmds, int type, int id, 551 struct super_block *sb) 552 { 553 return 0; 554 } 555 556 static inline int security_quota_on(struct dentry *dentry) 557 { 558 return 0; 559 } 560 561 static inline int security_syslog(int type) 562 { 563 return 0; 564 } 565 566 static inline int security_settime64(const struct timespec64 *ts, 567 const struct timezone *tz) 568 { 569 return cap_settime(ts, tz); 570 } 571 572 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 573 { 574 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 575 } 576 577 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 578 { 579 return 0; 580 } 581 582 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 583 struct file *file) 584 { 585 return cap_bprm_creds_from_file(bprm, file); 586 } 587 588 static inline int security_bprm_check(struct linux_binprm *bprm) 589 { 590 return 0; 591 } 592 593 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 594 { 595 } 596 597 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 598 { 599 } 600 601 static inline int security_fs_context_dup(struct fs_context *fc, 602 struct fs_context *src_fc) 603 { 604 return 0; 605 } 606 static inline int security_fs_context_parse_param(struct fs_context *fc, 607 struct fs_parameter *param) 608 { 609 return -ENOPARAM; 610 } 611 612 static inline int security_sb_alloc(struct super_block *sb) 613 { 614 return 0; 615 } 616 617 static inline void security_sb_free(struct super_block *sb) 618 { } 619 620 static inline int security_sb_eat_lsm_opts(char *options, 621 void **mnt_opts) 622 { 623 return 0; 624 } 625 626 static inline int security_sb_remount(struct super_block *sb, 627 void *mnt_opts) 628 { 629 return 0; 630 } 631 632 static inline int security_sb_kern_mount(struct super_block *sb) 633 { 634 return 0; 635 } 636 637 static inline int security_sb_show_options(struct seq_file *m, 638 struct super_block *sb) 639 { 640 return 0; 641 } 642 643 static inline int security_sb_statfs(struct dentry *dentry) 644 { 645 return 0; 646 } 647 648 static inline int security_sb_mount(const char *dev_name, const struct path *path, 649 const char *type, unsigned long flags, 650 void *data) 651 { 652 return 0; 653 } 654 655 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 656 { 657 return 0; 658 } 659 660 static inline int security_sb_pivotroot(const struct path *old_path, 661 const struct path *new_path) 662 { 663 return 0; 664 } 665 666 static inline int security_sb_set_mnt_opts(struct super_block *sb, 667 void *mnt_opts, 668 unsigned long kern_flags, 669 unsigned long *set_kern_flags) 670 { 671 return 0; 672 } 673 674 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 675 struct super_block *newsb, 676 unsigned long kern_flags, 677 unsigned long *set_kern_flags) 678 { 679 return 0; 680 } 681 682 static inline int security_add_mnt_opt(const char *option, const char *val, 683 int len, void **mnt_opts) 684 { 685 return 0; 686 } 687 688 static inline int security_move_mount(const struct path *from_path, 689 const struct path *to_path) 690 { 691 return 0; 692 } 693 694 static inline int security_path_notify(const struct path *path, u64 mask, 695 unsigned int obj_type) 696 { 697 return 0; 698 } 699 700 static inline int security_inode_alloc(struct inode *inode) 701 { 702 return 0; 703 } 704 705 static inline void security_inode_free(struct inode *inode) 706 { } 707 708 static inline int security_dentry_init_security(struct dentry *dentry, 709 int mode, 710 const struct qstr *name, 711 void **ctx, 712 u32 *ctxlen) 713 { 714 return -EOPNOTSUPP; 715 } 716 717 static inline int security_dentry_create_files_as(struct dentry *dentry, 718 int mode, struct qstr *name, 719 const struct cred *old, 720 struct cred *new) 721 { 722 return 0; 723 } 724 725 726 static inline int security_inode_init_security(struct inode *inode, 727 struct inode *dir, 728 const struct qstr *qstr, 729 const initxattrs xattrs, 730 void *fs_data) 731 { 732 return 0; 733 } 734 735 static inline int security_old_inode_init_security(struct inode *inode, 736 struct inode *dir, 737 const struct qstr *qstr, 738 const char **name, 739 void **value, size_t *len) 740 { 741 return -EOPNOTSUPP; 742 } 743 744 static inline int security_inode_create(struct inode *dir, 745 struct dentry *dentry, 746 umode_t mode) 747 { 748 return 0; 749 } 750 751 static inline int security_inode_link(struct dentry *old_dentry, 752 struct inode *dir, 753 struct dentry *new_dentry) 754 { 755 return 0; 756 } 757 758 static inline int security_inode_unlink(struct inode *dir, 759 struct dentry *dentry) 760 { 761 return 0; 762 } 763 764 static inline int security_inode_symlink(struct inode *dir, 765 struct dentry *dentry, 766 const char *old_name) 767 { 768 return 0; 769 } 770 771 static inline int security_inode_mkdir(struct inode *dir, 772 struct dentry *dentry, 773 int mode) 774 { 775 return 0; 776 } 777 778 static inline int security_inode_rmdir(struct inode *dir, 779 struct dentry *dentry) 780 { 781 return 0; 782 } 783 784 static inline int security_inode_mknod(struct inode *dir, 785 struct dentry *dentry, 786 int mode, dev_t dev) 787 { 788 return 0; 789 } 790 791 static inline int security_inode_rename(struct inode *old_dir, 792 struct dentry *old_dentry, 793 struct inode *new_dir, 794 struct dentry *new_dentry, 795 unsigned int flags) 796 { 797 return 0; 798 } 799 800 static inline int security_inode_readlink(struct dentry *dentry) 801 { 802 return 0; 803 } 804 805 static inline int security_inode_follow_link(struct dentry *dentry, 806 struct inode *inode, 807 bool rcu) 808 { 809 return 0; 810 } 811 812 static inline int security_inode_permission(struct inode *inode, int mask) 813 { 814 return 0; 815 } 816 817 static inline int security_inode_setattr(struct dentry *dentry, 818 struct iattr *attr) 819 { 820 return 0; 821 } 822 823 static inline int security_inode_getattr(const struct path *path) 824 { 825 return 0; 826 } 827 828 static inline int security_inode_setxattr(struct dentry *dentry, 829 const char *name, const void *value, size_t size, int flags) 830 { 831 return cap_inode_setxattr(dentry, name, value, size, flags); 832 } 833 834 static inline void security_inode_post_setxattr(struct dentry *dentry, 835 const char *name, const void *value, size_t size, int flags) 836 { } 837 838 static inline int security_inode_getxattr(struct dentry *dentry, 839 const char *name) 840 { 841 return 0; 842 } 843 844 static inline int security_inode_listxattr(struct dentry *dentry) 845 { 846 return 0; 847 } 848 849 static inline int security_inode_removexattr(struct dentry *dentry, 850 const char *name) 851 { 852 return cap_inode_removexattr(dentry, name); 853 } 854 855 static inline int security_inode_need_killpriv(struct dentry *dentry) 856 { 857 return cap_inode_need_killpriv(dentry); 858 } 859 860 static inline int security_inode_killpriv(struct dentry *dentry) 861 { 862 return cap_inode_killpriv(dentry); 863 } 864 865 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 866 { 867 return -EOPNOTSUPP; 868 } 869 870 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 871 { 872 return -EOPNOTSUPP; 873 } 874 875 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 876 { 877 return 0; 878 } 879 880 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 881 { 882 *secid = 0; 883 } 884 885 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 886 { 887 return 0; 888 } 889 890 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 891 struct kernfs_node *kn) 892 { 893 return 0; 894 } 895 896 static inline int security_inode_copy_up_xattr(const char *name) 897 { 898 return -EOPNOTSUPP; 899 } 900 901 static inline int security_file_permission(struct file *file, int mask) 902 { 903 return 0; 904 } 905 906 static inline int security_file_alloc(struct file *file) 907 { 908 return 0; 909 } 910 911 static inline void security_file_free(struct file *file) 912 { } 913 914 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 915 unsigned long arg) 916 { 917 return 0; 918 } 919 920 static inline int security_mmap_file(struct file *file, unsigned long prot, 921 unsigned long flags) 922 { 923 return 0; 924 } 925 926 static inline int security_mmap_addr(unsigned long addr) 927 { 928 return cap_mmap_addr(addr); 929 } 930 931 static inline int security_file_mprotect(struct vm_area_struct *vma, 932 unsigned long reqprot, 933 unsigned long prot) 934 { 935 return 0; 936 } 937 938 static inline int security_file_lock(struct file *file, unsigned int cmd) 939 { 940 return 0; 941 } 942 943 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 944 unsigned long arg) 945 { 946 return 0; 947 } 948 949 static inline void security_file_set_fowner(struct file *file) 950 { 951 return; 952 } 953 954 static inline int security_file_send_sigiotask(struct task_struct *tsk, 955 struct fown_struct *fown, 956 int sig) 957 { 958 return 0; 959 } 960 961 static inline int security_file_receive(struct file *file) 962 { 963 return 0; 964 } 965 966 static inline int security_file_open(struct file *file) 967 { 968 return 0; 969 } 970 971 static inline int security_task_alloc(struct task_struct *task, 972 unsigned long clone_flags) 973 { 974 return 0; 975 } 976 977 static inline void security_task_free(struct task_struct *task) 978 { } 979 980 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 981 { 982 return 0; 983 } 984 985 static inline void security_cred_free(struct cred *cred) 986 { } 987 988 static inline int security_prepare_creds(struct cred *new, 989 const struct cred *old, 990 gfp_t gfp) 991 { 992 return 0; 993 } 994 995 static inline void security_transfer_creds(struct cred *new, 996 const struct cred *old) 997 { 998 } 999 1000 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1001 { 1002 return 0; 1003 } 1004 1005 static inline int security_kernel_create_files_as(struct cred *cred, 1006 struct inode *inode) 1007 { 1008 return 0; 1009 } 1010 1011 static inline int security_kernel_module_request(char *kmod_name) 1012 { 1013 return 0; 1014 } 1015 1016 static inline int security_kernel_load_data(enum kernel_load_data_id id) 1017 { 1018 return 0; 1019 } 1020 1021 static inline int security_kernel_read_file(struct file *file, 1022 enum kernel_read_file_id id) 1023 { 1024 return 0; 1025 } 1026 1027 static inline int security_kernel_post_read_file(struct file *file, 1028 char *buf, loff_t size, 1029 enum kernel_read_file_id id) 1030 { 1031 return 0; 1032 } 1033 1034 static inline int security_task_fix_setuid(struct cred *new, 1035 const struct cred *old, 1036 int flags) 1037 { 1038 return cap_task_fix_setuid(new, old, flags); 1039 } 1040 1041 static inline int security_task_fix_setgid(struct cred *new, 1042 const struct cred *old, 1043 int flags) 1044 { 1045 return 0; 1046 } 1047 1048 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1049 { 1050 return 0; 1051 } 1052 1053 static inline int security_task_getpgid(struct task_struct *p) 1054 { 1055 return 0; 1056 } 1057 1058 static inline int security_task_getsid(struct task_struct *p) 1059 { 1060 return 0; 1061 } 1062 1063 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1064 { 1065 *secid = 0; 1066 } 1067 1068 static inline int security_task_setnice(struct task_struct *p, int nice) 1069 { 1070 return cap_task_setnice(p, nice); 1071 } 1072 1073 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1074 { 1075 return cap_task_setioprio(p, ioprio); 1076 } 1077 1078 static inline int security_task_getioprio(struct task_struct *p) 1079 { 1080 return 0; 1081 } 1082 1083 static inline int security_task_prlimit(const struct cred *cred, 1084 const struct cred *tcred, 1085 unsigned int flags) 1086 { 1087 return 0; 1088 } 1089 1090 static inline int security_task_setrlimit(struct task_struct *p, 1091 unsigned int resource, 1092 struct rlimit *new_rlim) 1093 { 1094 return 0; 1095 } 1096 1097 static inline int security_task_setscheduler(struct task_struct *p) 1098 { 1099 return cap_task_setscheduler(p); 1100 } 1101 1102 static inline int security_task_getscheduler(struct task_struct *p) 1103 { 1104 return 0; 1105 } 1106 1107 static inline int security_task_movememory(struct task_struct *p) 1108 { 1109 return 0; 1110 } 1111 1112 static inline int security_task_kill(struct task_struct *p, 1113 struct kernel_siginfo *info, int sig, 1114 const struct cred *cred) 1115 { 1116 return 0; 1117 } 1118 1119 static inline int security_task_prctl(int option, unsigned long arg2, 1120 unsigned long arg3, 1121 unsigned long arg4, 1122 unsigned long arg5) 1123 { 1124 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1125 } 1126 1127 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1128 { } 1129 1130 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1131 short flag) 1132 { 1133 return 0; 1134 } 1135 1136 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1137 { 1138 *secid = 0; 1139 } 1140 1141 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1142 { 1143 return 0; 1144 } 1145 1146 static inline void security_msg_msg_free(struct msg_msg *msg) 1147 { } 1148 1149 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1150 { 1151 return 0; 1152 } 1153 1154 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1155 { } 1156 1157 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1158 int msqflg) 1159 { 1160 return 0; 1161 } 1162 1163 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1164 { 1165 return 0; 1166 } 1167 1168 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1169 struct msg_msg *msg, int msqflg) 1170 { 1171 return 0; 1172 } 1173 1174 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1175 struct msg_msg *msg, 1176 struct task_struct *target, 1177 long type, int mode) 1178 { 1179 return 0; 1180 } 1181 1182 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1183 { 1184 return 0; 1185 } 1186 1187 static inline void security_shm_free(struct kern_ipc_perm *shp) 1188 { } 1189 1190 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1191 int shmflg) 1192 { 1193 return 0; 1194 } 1195 1196 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1197 { 1198 return 0; 1199 } 1200 1201 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1202 char __user *shmaddr, int shmflg) 1203 { 1204 return 0; 1205 } 1206 1207 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1208 { 1209 return 0; 1210 } 1211 1212 static inline void security_sem_free(struct kern_ipc_perm *sma) 1213 { } 1214 1215 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1216 { 1217 return 0; 1218 } 1219 1220 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1221 { 1222 return 0; 1223 } 1224 1225 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1226 struct sembuf *sops, unsigned nsops, 1227 int alter) 1228 { 1229 return 0; 1230 } 1231 1232 static inline void security_d_instantiate(struct dentry *dentry, 1233 struct inode *inode) 1234 { } 1235 1236 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1237 char *name, char **value) 1238 { 1239 return -EINVAL; 1240 } 1241 1242 static inline int security_setprocattr(const char *lsm, char *name, 1243 void *value, size_t size) 1244 { 1245 return -EINVAL; 1246 } 1247 1248 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1249 { 1250 return 0; 1251 } 1252 1253 static inline int security_ismaclabel(const char *name) 1254 { 1255 return 0; 1256 } 1257 1258 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1259 { 1260 return -EOPNOTSUPP; 1261 } 1262 1263 static inline int security_secctx_to_secid(const char *secdata, 1264 u32 seclen, 1265 u32 *secid) 1266 { 1267 return -EOPNOTSUPP; 1268 } 1269 1270 static inline void security_release_secctx(char *secdata, u32 seclen) 1271 { 1272 } 1273 1274 static inline void security_inode_invalidate_secctx(struct inode *inode) 1275 { 1276 } 1277 1278 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1279 { 1280 return -EOPNOTSUPP; 1281 } 1282 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1283 { 1284 return -EOPNOTSUPP; 1285 } 1286 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1287 { 1288 return -EOPNOTSUPP; 1289 } 1290 static inline int security_locked_down(enum lockdown_reason what) 1291 { 1292 return 0; 1293 } 1294 #endif /* CONFIG_SECURITY */ 1295 1296 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1297 int security_post_notification(const struct cred *w_cred, 1298 const struct cred *cred, 1299 struct watch_notification *n); 1300 #else 1301 static inline int security_post_notification(const struct cred *w_cred, 1302 const struct cred *cred, 1303 struct watch_notification *n) 1304 { 1305 return 0; 1306 } 1307 #endif 1308 1309 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1310 int security_watch_key(struct key *key); 1311 #else 1312 static inline int security_watch_key(struct key *key) 1313 { 1314 return 0; 1315 } 1316 #endif 1317 1318 #ifdef CONFIG_SECURITY_NETWORK 1319 1320 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1321 int security_unix_may_send(struct socket *sock, struct socket *other); 1322 int security_socket_create(int family, int type, int protocol, int kern); 1323 int security_socket_post_create(struct socket *sock, int family, 1324 int type, int protocol, int kern); 1325 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1326 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1327 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1328 int security_socket_listen(struct socket *sock, int backlog); 1329 int security_socket_accept(struct socket *sock, struct socket *newsock); 1330 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1331 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1332 int size, int flags); 1333 int security_socket_getsockname(struct socket *sock); 1334 int security_socket_getpeername(struct socket *sock); 1335 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1336 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1337 int security_socket_shutdown(struct socket *sock, int how); 1338 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1339 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1340 int __user *optlen, unsigned len); 1341 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1342 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1343 void security_sk_free(struct sock *sk); 1344 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1345 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1346 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1347 void security_sock_graft(struct sock*sk, struct socket *parent); 1348 int security_inet_conn_request(struct sock *sk, 1349 struct sk_buff *skb, struct request_sock *req); 1350 void security_inet_csk_clone(struct sock *newsk, 1351 const struct request_sock *req); 1352 void security_inet_conn_established(struct sock *sk, 1353 struct sk_buff *skb); 1354 int security_secmark_relabel_packet(u32 secid); 1355 void security_secmark_refcount_inc(void); 1356 void security_secmark_refcount_dec(void); 1357 int security_tun_dev_alloc_security(void **security); 1358 void security_tun_dev_free_security(void *security); 1359 int security_tun_dev_create(void); 1360 int security_tun_dev_attach_queue(void *security); 1361 int security_tun_dev_attach(struct sock *sk, void *security); 1362 int security_tun_dev_open(void *security); 1363 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1364 int security_sctp_bind_connect(struct sock *sk, int optname, 1365 struct sockaddr *address, int addrlen); 1366 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1367 struct sock *newsk); 1368 1369 #else /* CONFIG_SECURITY_NETWORK */ 1370 static inline int security_unix_stream_connect(struct sock *sock, 1371 struct sock *other, 1372 struct sock *newsk) 1373 { 1374 return 0; 1375 } 1376 1377 static inline int security_unix_may_send(struct socket *sock, 1378 struct socket *other) 1379 { 1380 return 0; 1381 } 1382 1383 static inline int security_socket_create(int family, int type, 1384 int protocol, int kern) 1385 { 1386 return 0; 1387 } 1388 1389 static inline int security_socket_post_create(struct socket *sock, 1390 int family, 1391 int type, 1392 int protocol, int kern) 1393 { 1394 return 0; 1395 } 1396 1397 static inline int security_socket_socketpair(struct socket *socka, 1398 struct socket *sockb) 1399 { 1400 return 0; 1401 } 1402 1403 static inline int security_socket_bind(struct socket *sock, 1404 struct sockaddr *address, 1405 int addrlen) 1406 { 1407 return 0; 1408 } 1409 1410 static inline int security_socket_connect(struct socket *sock, 1411 struct sockaddr *address, 1412 int addrlen) 1413 { 1414 return 0; 1415 } 1416 1417 static inline int security_socket_listen(struct socket *sock, int backlog) 1418 { 1419 return 0; 1420 } 1421 1422 static inline int security_socket_accept(struct socket *sock, 1423 struct socket *newsock) 1424 { 1425 return 0; 1426 } 1427 1428 static inline int security_socket_sendmsg(struct socket *sock, 1429 struct msghdr *msg, int size) 1430 { 1431 return 0; 1432 } 1433 1434 static inline int security_socket_recvmsg(struct socket *sock, 1435 struct msghdr *msg, int size, 1436 int flags) 1437 { 1438 return 0; 1439 } 1440 1441 static inline int security_socket_getsockname(struct socket *sock) 1442 { 1443 return 0; 1444 } 1445 1446 static inline int security_socket_getpeername(struct socket *sock) 1447 { 1448 return 0; 1449 } 1450 1451 static inline int security_socket_getsockopt(struct socket *sock, 1452 int level, int optname) 1453 { 1454 return 0; 1455 } 1456 1457 static inline int security_socket_setsockopt(struct socket *sock, 1458 int level, int optname) 1459 { 1460 return 0; 1461 } 1462 1463 static inline int security_socket_shutdown(struct socket *sock, int how) 1464 { 1465 return 0; 1466 } 1467 static inline int security_sock_rcv_skb(struct sock *sk, 1468 struct sk_buff *skb) 1469 { 1470 return 0; 1471 } 1472 1473 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1474 int __user *optlen, unsigned len) 1475 { 1476 return -ENOPROTOOPT; 1477 } 1478 1479 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1480 { 1481 return -ENOPROTOOPT; 1482 } 1483 1484 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1485 { 1486 return 0; 1487 } 1488 1489 static inline void security_sk_free(struct sock *sk) 1490 { 1491 } 1492 1493 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1494 { 1495 } 1496 1497 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1498 { 1499 } 1500 1501 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1502 { 1503 } 1504 1505 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1506 { 1507 } 1508 1509 static inline int security_inet_conn_request(struct sock *sk, 1510 struct sk_buff *skb, struct request_sock *req) 1511 { 1512 return 0; 1513 } 1514 1515 static inline void security_inet_csk_clone(struct sock *newsk, 1516 const struct request_sock *req) 1517 { 1518 } 1519 1520 static inline void security_inet_conn_established(struct sock *sk, 1521 struct sk_buff *skb) 1522 { 1523 } 1524 1525 static inline int security_secmark_relabel_packet(u32 secid) 1526 { 1527 return 0; 1528 } 1529 1530 static inline void security_secmark_refcount_inc(void) 1531 { 1532 } 1533 1534 static inline void security_secmark_refcount_dec(void) 1535 { 1536 } 1537 1538 static inline int security_tun_dev_alloc_security(void **security) 1539 { 1540 return 0; 1541 } 1542 1543 static inline void security_tun_dev_free_security(void *security) 1544 { 1545 } 1546 1547 static inline int security_tun_dev_create(void) 1548 { 1549 return 0; 1550 } 1551 1552 static inline int security_tun_dev_attach_queue(void *security) 1553 { 1554 return 0; 1555 } 1556 1557 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1558 { 1559 return 0; 1560 } 1561 1562 static inline int security_tun_dev_open(void *security) 1563 { 1564 return 0; 1565 } 1566 1567 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1568 struct sk_buff *skb) 1569 { 1570 return 0; 1571 } 1572 1573 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1574 struct sockaddr *address, 1575 int addrlen) 1576 { 1577 return 0; 1578 } 1579 1580 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1581 struct sock *sk, 1582 struct sock *newsk) 1583 { 1584 } 1585 #endif /* CONFIG_SECURITY_NETWORK */ 1586 1587 #ifdef CONFIG_SECURITY_INFINIBAND 1588 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1589 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1590 int security_ib_alloc_security(void **sec); 1591 void security_ib_free_security(void *sec); 1592 #else /* CONFIG_SECURITY_INFINIBAND */ 1593 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1594 { 1595 return 0; 1596 } 1597 1598 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1599 { 1600 return 0; 1601 } 1602 1603 static inline int security_ib_alloc_security(void **sec) 1604 { 1605 return 0; 1606 } 1607 1608 static inline void security_ib_free_security(void *sec) 1609 { 1610 } 1611 #endif /* CONFIG_SECURITY_INFINIBAND */ 1612 1613 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1614 1615 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1616 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1617 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1618 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1619 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1620 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1621 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1622 struct xfrm_sec_ctx *polsec, u32 secid); 1623 int security_xfrm_state_delete(struct xfrm_state *x); 1624 void security_xfrm_state_free(struct xfrm_state *x); 1625 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1626 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1627 struct xfrm_policy *xp, 1628 const struct flowi *fl); 1629 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1630 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1631 1632 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1633 1634 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1635 struct xfrm_user_sec_ctx *sec_ctx, 1636 gfp_t gfp) 1637 { 1638 return 0; 1639 } 1640 1641 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1642 { 1643 return 0; 1644 } 1645 1646 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1647 { 1648 } 1649 1650 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1651 { 1652 return 0; 1653 } 1654 1655 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1656 struct xfrm_user_sec_ctx *sec_ctx) 1657 { 1658 return 0; 1659 } 1660 1661 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1662 struct xfrm_sec_ctx *polsec, u32 secid) 1663 { 1664 return 0; 1665 } 1666 1667 static inline void security_xfrm_state_free(struct xfrm_state *x) 1668 { 1669 } 1670 1671 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1672 { 1673 return 0; 1674 } 1675 1676 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1677 { 1678 return 0; 1679 } 1680 1681 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1682 struct xfrm_policy *xp, const struct flowi *fl) 1683 { 1684 return 1; 1685 } 1686 1687 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1688 { 1689 return 0; 1690 } 1691 1692 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1693 { 1694 } 1695 1696 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1697 1698 #ifdef CONFIG_SECURITY_PATH 1699 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1700 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1701 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1702 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1703 unsigned int dev); 1704 int security_path_truncate(const struct path *path); 1705 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1706 const char *old_name); 1707 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1708 struct dentry *new_dentry); 1709 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1710 const struct path *new_dir, struct dentry *new_dentry, 1711 unsigned int flags); 1712 int security_path_chmod(const struct path *path, umode_t mode); 1713 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1714 int security_path_chroot(const struct path *path); 1715 #else /* CONFIG_SECURITY_PATH */ 1716 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1717 { 1718 return 0; 1719 } 1720 1721 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1722 umode_t mode) 1723 { 1724 return 0; 1725 } 1726 1727 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1728 { 1729 return 0; 1730 } 1731 1732 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1733 umode_t mode, unsigned int dev) 1734 { 1735 return 0; 1736 } 1737 1738 static inline int security_path_truncate(const struct path *path) 1739 { 1740 return 0; 1741 } 1742 1743 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1744 const char *old_name) 1745 { 1746 return 0; 1747 } 1748 1749 static inline int security_path_link(struct dentry *old_dentry, 1750 const struct path *new_dir, 1751 struct dentry *new_dentry) 1752 { 1753 return 0; 1754 } 1755 1756 static inline int security_path_rename(const struct path *old_dir, 1757 struct dentry *old_dentry, 1758 const struct path *new_dir, 1759 struct dentry *new_dentry, 1760 unsigned int flags) 1761 { 1762 return 0; 1763 } 1764 1765 static inline int security_path_chmod(const struct path *path, umode_t mode) 1766 { 1767 return 0; 1768 } 1769 1770 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1771 { 1772 return 0; 1773 } 1774 1775 static inline int security_path_chroot(const struct path *path) 1776 { 1777 return 0; 1778 } 1779 #endif /* CONFIG_SECURITY_PATH */ 1780 1781 #ifdef CONFIG_KEYS 1782 #ifdef CONFIG_SECURITY 1783 1784 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1785 void security_key_free(struct key *key); 1786 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1787 enum key_need_perm need_perm); 1788 int security_key_getsecurity(struct key *key, char **_buffer); 1789 1790 #else 1791 1792 static inline int security_key_alloc(struct key *key, 1793 const struct cred *cred, 1794 unsigned long flags) 1795 { 1796 return 0; 1797 } 1798 1799 static inline void security_key_free(struct key *key) 1800 { 1801 } 1802 1803 static inline int security_key_permission(key_ref_t key_ref, 1804 const struct cred *cred, 1805 enum key_need_perm need_perm) 1806 { 1807 return 0; 1808 } 1809 1810 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1811 { 1812 *_buffer = NULL; 1813 return 0; 1814 } 1815 1816 #endif 1817 #endif /* CONFIG_KEYS */ 1818 1819 #ifdef CONFIG_AUDIT 1820 #ifdef CONFIG_SECURITY 1821 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1822 int security_audit_rule_known(struct audit_krule *krule); 1823 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1824 void security_audit_rule_free(void *lsmrule); 1825 1826 #else 1827 1828 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1829 void **lsmrule) 1830 { 1831 return 0; 1832 } 1833 1834 static inline int security_audit_rule_known(struct audit_krule *krule) 1835 { 1836 return 0; 1837 } 1838 1839 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1840 void *lsmrule) 1841 { 1842 return 0; 1843 } 1844 1845 static inline void security_audit_rule_free(void *lsmrule) 1846 { } 1847 1848 #endif /* CONFIG_SECURITY */ 1849 #endif /* CONFIG_AUDIT */ 1850 1851 #ifdef CONFIG_SECURITYFS 1852 1853 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1854 struct dentry *parent, void *data, 1855 const struct file_operations *fops); 1856 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1857 struct dentry *securityfs_create_symlink(const char *name, 1858 struct dentry *parent, 1859 const char *target, 1860 const struct inode_operations *iops); 1861 extern void securityfs_remove(struct dentry *dentry); 1862 1863 #else /* CONFIG_SECURITYFS */ 1864 1865 static inline struct dentry *securityfs_create_dir(const char *name, 1866 struct dentry *parent) 1867 { 1868 return ERR_PTR(-ENODEV); 1869 } 1870 1871 static inline struct dentry *securityfs_create_file(const char *name, 1872 umode_t mode, 1873 struct dentry *parent, 1874 void *data, 1875 const struct file_operations *fops) 1876 { 1877 return ERR_PTR(-ENODEV); 1878 } 1879 1880 static inline struct dentry *securityfs_create_symlink(const char *name, 1881 struct dentry *parent, 1882 const char *target, 1883 const struct inode_operations *iops) 1884 { 1885 return ERR_PTR(-ENODEV); 1886 } 1887 1888 static inline void securityfs_remove(struct dentry *dentry) 1889 {} 1890 1891 #endif 1892 1893 #ifdef CONFIG_BPF_SYSCALL 1894 union bpf_attr; 1895 struct bpf_map; 1896 struct bpf_prog; 1897 struct bpf_prog_aux; 1898 #ifdef CONFIG_SECURITY 1899 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1900 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1901 extern int security_bpf_prog(struct bpf_prog *prog); 1902 extern int security_bpf_map_alloc(struct bpf_map *map); 1903 extern void security_bpf_map_free(struct bpf_map *map); 1904 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1905 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1906 #else 1907 static inline int security_bpf(int cmd, union bpf_attr *attr, 1908 unsigned int size) 1909 { 1910 return 0; 1911 } 1912 1913 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1914 { 1915 return 0; 1916 } 1917 1918 static inline int security_bpf_prog(struct bpf_prog *prog) 1919 { 1920 return 0; 1921 } 1922 1923 static inline int security_bpf_map_alloc(struct bpf_map *map) 1924 { 1925 return 0; 1926 } 1927 1928 static inline void security_bpf_map_free(struct bpf_map *map) 1929 { } 1930 1931 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1932 { 1933 return 0; 1934 } 1935 1936 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1937 { } 1938 #endif /* CONFIG_SECURITY */ 1939 #endif /* CONFIG_BPF_SYSCALL */ 1940 1941 #ifdef CONFIG_PERF_EVENTS 1942 struct perf_event_attr; 1943 struct perf_event; 1944 1945 #ifdef CONFIG_SECURITY 1946 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1947 extern int security_perf_event_alloc(struct perf_event *event); 1948 extern void security_perf_event_free(struct perf_event *event); 1949 extern int security_perf_event_read(struct perf_event *event); 1950 extern int security_perf_event_write(struct perf_event *event); 1951 #else 1952 static inline int security_perf_event_open(struct perf_event_attr *attr, 1953 int type) 1954 { 1955 return 0; 1956 } 1957 1958 static inline int security_perf_event_alloc(struct perf_event *event) 1959 { 1960 return 0; 1961 } 1962 1963 static inline void security_perf_event_free(struct perf_event *event) 1964 { 1965 } 1966 1967 static inline int security_perf_event_read(struct perf_event *event) 1968 { 1969 return 0; 1970 } 1971 1972 static inline int security_perf_event_write(struct perf_event *event) 1973 { 1974 return 0; 1975 } 1976 #endif /* CONFIG_SECURITY */ 1977 #endif /* CONFIG_PERF_EVENTS */ 1978 1979 #endif /* ! __LINUX_SECURITY_H */ 1980