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_XFRM_SECRET, 131 LOCKDOWN_CONFIDENTIALITY_MAX, 132 }; 133 134 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 135 136 /* These functions are in security/commoncap.c */ 137 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 138 int cap, unsigned int opts); 139 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 140 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 141 extern int cap_ptrace_traceme(struct task_struct *parent); 142 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 143 extern int cap_capset(struct cred *new, const struct cred *old, 144 const kernel_cap_t *effective, 145 const kernel_cap_t *inheritable, 146 const kernel_cap_t *permitted); 147 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 148 int cap_inode_setxattr(struct dentry *dentry, const char *name, 149 const void *value, size_t size, int flags); 150 int cap_inode_removexattr(struct user_namespace *mnt_userns, 151 struct dentry *dentry, const char *name); 152 int cap_inode_need_killpriv(struct dentry *dentry); 153 int cap_inode_killpriv(struct user_namespace *mnt_userns, 154 struct dentry *dentry); 155 int cap_inode_getsecurity(struct user_namespace *mnt_userns, 156 struct inode *inode, const char *name, void **buffer, 157 bool alloc); 158 extern int cap_mmap_addr(unsigned long addr); 159 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 160 unsigned long prot, unsigned long flags); 161 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 162 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 163 unsigned long arg4, unsigned long arg5); 164 extern int cap_task_setscheduler(struct task_struct *p); 165 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 166 extern int cap_task_setnice(struct task_struct *p, int nice); 167 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 168 169 struct msghdr; 170 struct sk_buff; 171 struct sock; 172 struct sockaddr; 173 struct socket; 174 struct flowi_common; 175 struct dst_entry; 176 struct xfrm_selector; 177 struct xfrm_policy; 178 struct xfrm_state; 179 struct xfrm_user_sec_ctx; 180 struct seq_file; 181 struct sctp_endpoint; 182 183 #ifdef CONFIG_MMU 184 extern unsigned long mmap_min_addr; 185 extern unsigned long dac_mmap_min_addr; 186 #else 187 #define mmap_min_addr 0UL 188 #define dac_mmap_min_addr 0UL 189 #endif 190 191 /* 192 * Values used in the task_security_ops calls 193 */ 194 /* setuid or setgid, id0 == uid or gid */ 195 #define LSM_SETID_ID 1 196 197 /* setreuid or setregid, id0 == real, id1 == eff */ 198 #define LSM_SETID_RE 2 199 200 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 201 #define LSM_SETID_RES 4 202 203 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 204 #define LSM_SETID_FS 8 205 206 /* Flags for security_task_prlimit(). */ 207 #define LSM_PRLIMIT_READ 1 208 #define LSM_PRLIMIT_WRITE 2 209 210 /* forward declares to avoid warnings */ 211 struct sched_param; 212 struct request_sock; 213 214 /* bprm->unsafe reasons */ 215 #define LSM_UNSAFE_SHARE 1 216 #define LSM_UNSAFE_PTRACE 2 217 #define LSM_UNSAFE_NO_NEW_PRIVS 4 218 219 #ifdef CONFIG_MMU 220 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 221 void *buffer, size_t *lenp, loff_t *ppos); 222 #endif 223 224 /* security_inode_init_security callback function to write xattrs */ 225 typedef int (*initxattrs) (struct inode *inode, 226 const struct xattr *xattr_array, void *fs_data); 227 228 229 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 230 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 231 #define __data_id_stringify(dummy, str) #str, 232 233 enum kernel_load_data_id { 234 __kernel_read_file_id(__data_id_enumify) 235 }; 236 237 static const char * const kernel_load_data_str[] = { 238 __kernel_read_file_id(__data_id_stringify) 239 }; 240 241 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 242 { 243 if ((unsigned)id >= LOADING_MAX_ID) 244 return kernel_load_data_str[LOADING_UNKNOWN]; 245 246 return kernel_load_data_str[id]; 247 } 248 249 #ifdef CONFIG_SECURITY 250 251 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 252 int register_blocking_lsm_notifier(struct notifier_block *nb); 253 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 254 255 /* prototypes */ 256 extern int security_init(void); 257 extern int early_security_init(void); 258 259 /* Security operations */ 260 int security_binder_set_context_mgr(struct task_struct *mgr); 261 int security_binder_transaction(struct task_struct *from, 262 struct task_struct *to); 263 int security_binder_transfer_binder(struct task_struct *from, 264 struct task_struct *to); 265 int security_binder_transfer_file(struct task_struct *from, 266 struct task_struct *to, struct file *file); 267 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 268 int security_ptrace_traceme(struct task_struct *parent); 269 int security_capget(struct task_struct *target, 270 kernel_cap_t *effective, 271 kernel_cap_t *inheritable, 272 kernel_cap_t *permitted); 273 int security_capset(struct cred *new, const struct cred *old, 274 const kernel_cap_t *effective, 275 const kernel_cap_t *inheritable, 276 const kernel_cap_t *permitted); 277 int security_capable(const struct cred *cred, 278 struct user_namespace *ns, 279 int cap, 280 unsigned int opts); 281 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 282 int security_quota_on(struct dentry *dentry); 283 int security_syslog(int type); 284 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 285 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 286 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 287 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 288 int security_bprm_check(struct linux_binprm *bprm); 289 void security_bprm_committing_creds(struct linux_binprm *bprm); 290 void security_bprm_committed_creds(struct linux_binprm *bprm); 291 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 292 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 293 int security_sb_alloc(struct super_block *sb); 294 void security_sb_free(struct super_block *sb); 295 void security_free_mnt_opts(void **mnt_opts); 296 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 297 int security_sb_remount(struct super_block *sb, void *mnt_opts); 298 int security_sb_kern_mount(struct super_block *sb); 299 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 300 int security_sb_statfs(struct dentry *dentry); 301 int security_sb_mount(const char *dev_name, const struct path *path, 302 const char *type, unsigned long flags, void *data); 303 int security_sb_umount(struct vfsmount *mnt, int flags); 304 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 305 int security_sb_set_mnt_opts(struct super_block *sb, 306 void *mnt_opts, 307 unsigned long kern_flags, 308 unsigned long *set_kern_flags); 309 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 310 struct super_block *newsb, 311 unsigned long kern_flags, 312 unsigned long *set_kern_flags); 313 int security_add_mnt_opt(const char *option, const char *val, 314 int len, void **mnt_opts); 315 int security_move_mount(const struct path *from_path, const struct path *to_path); 316 int security_dentry_init_security(struct dentry *dentry, int mode, 317 const struct qstr *name, void **ctx, 318 u32 *ctxlen); 319 int security_dentry_create_files_as(struct dentry *dentry, int mode, 320 struct qstr *name, 321 const struct cred *old, 322 struct cred *new); 323 int security_path_notify(const struct path *path, u64 mask, 324 unsigned int obj_type); 325 int security_inode_alloc(struct inode *inode); 326 void security_inode_free(struct inode *inode); 327 int security_inode_init_security(struct inode *inode, struct inode *dir, 328 const struct qstr *qstr, 329 initxattrs initxattrs, void *fs_data); 330 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 331 const struct qstr *qstr, const char **name, 332 void **value, size_t *len); 333 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 334 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 335 struct dentry *new_dentry); 336 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 337 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 338 const char *old_name); 339 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 340 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 341 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 342 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 343 struct inode *new_dir, struct dentry *new_dentry, 344 unsigned int flags); 345 int security_inode_readlink(struct dentry *dentry); 346 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 347 bool rcu); 348 int security_inode_permission(struct inode *inode, int mask); 349 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 350 int security_inode_getattr(const struct path *path); 351 int security_inode_setxattr(struct user_namespace *mnt_userns, 352 struct dentry *dentry, const char *name, 353 const void *value, size_t size, int flags); 354 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 355 const void *value, size_t size, int flags); 356 int security_inode_getxattr(struct dentry *dentry, const char *name); 357 int security_inode_listxattr(struct dentry *dentry); 358 int security_inode_removexattr(struct user_namespace *mnt_userns, 359 struct dentry *dentry, const char *name); 360 int security_inode_need_killpriv(struct dentry *dentry); 361 int security_inode_killpriv(struct user_namespace *mnt_userns, 362 struct dentry *dentry); 363 int security_inode_getsecurity(struct user_namespace *mnt_userns, 364 struct inode *inode, const char *name, 365 void **buffer, bool alloc); 366 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 367 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 368 void security_inode_getsecid(struct inode *inode, u32 *secid); 369 int security_inode_copy_up(struct dentry *src, struct cred **new); 370 int security_inode_copy_up_xattr(const char *name); 371 int security_kernfs_init_security(struct kernfs_node *kn_dir, 372 struct kernfs_node *kn); 373 int security_file_permission(struct file *file, int mask); 374 int security_file_alloc(struct file *file); 375 void security_file_free(struct file *file); 376 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 377 int security_mmap_file(struct file *file, unsigned long prot, 378 unsigned long flags); 379 int security_mmap_addr(unsigned long addr); 380 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 381 unsigned long prot); 382 int security_file_lock(struct file *file, unsigned int cmd); 383 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 384 void security_file_set_fowner(struct file *file); 385 int security_file_send_sigiotask(struct task_struct *tsk, 386 struct fown_struct *fown, int sig); 387 int security_file_receive(struct file *file); 388 int security_file_open(struct file *file); 389 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 390 void security_task_free(struct task_struct *task); 391 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 392 void security_cred_free(struct cred *cred); 393 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 394 void security_transfer_creds(struct cred *new, const struct cred *old); 395 void security_cred_getsecid(const struct cred *c, u32 *secid); 396 int security_kernel_act_as(struct cred *new, u32 secid); 397 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 398 int security_kernel_module_request(char *kmod_name); 399 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 400 int security_kernel_post_load_data(char *buf, loff_t size, 401 enum kernel_load_data_id id, 402 char *description); 403 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 404 bool contents); 405 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 406 enum kernel_read_file_id id); 407 int security_task_fix_setuid(struct cred *new, const struct cred *old, 408 int flags); 409 int security_task_fix_setgid(struct cred *new, const struct cred *old, 410 int flags); 411 int security_task_setpgid(struct task_struct *p, pid_t pgid); 412 int security_task_getpgid(struct task_struct *p); 413 int security_task_getsid(struct task_struct *p); 414 void security_task_getsecid(struct task_struct *p, u32 *secid); 415 int security_task_setnice(struct task_struct *p, int nice); 416 int security_task_setioprio(struct task_struct *p, int ioprio); 417 int security_task_getioprio(struct task_struct *p); 418 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 419 unsigned int flags); 420 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 421 struct rlimit *new_rlim); 422 int security_task_setscheduler(struct task_struct *p); 423 int security_task_getscheduler(struct task_struct *p); 424 int security_task_movememory(struct task_struct *p); 425 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 426 int sig, const struct cred *cred); 427 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 428 unsigned long arg4, unsigned long arg5); 429 void security_task_to_inode(struct task_struct *p, struct inode *inode); 430 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 431 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 432 int security_msg_msg_alloc(struct msg_msg *msg); 433 void security_msg_msg_free(struct msg_msg *msg); 434 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 435 void security_msg_queue_free(struct kern_ipc_perm *msq); 436 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 437 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 438 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 439 struct msg_msg *msg, int msqflg); 440 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 441 struct task_struct *target, long type, int mode); 442 int security_shm_alloc(struct kern_ipc_perm *shp); 443 void security_shm_free(struct kern_ipc_perm *shp); 444 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 445 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 446 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 447 int security_sem_alloc(struct kern_ipc_perm *sma); 448 void security_sem_free(struct kern_ipc_perm *sma); 449 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 450 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 451 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 452 unsigned nsops, int alter); 453 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 454 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 455 char **value); 456 int security_setprocattr(const char *lsm, const char *name, void *value, 457 size_t size); 458 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 459 int security_ismaclabel(const char *name); 460 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 461 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 462 void security_release_secctx(char *secdata, u32 seclen); 463 void security_inode_invalidate_secctx(struct inode *inode); 464 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 465 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 466 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 467 int security_locked_down(enum lockdown_reason what); 468 #else /* CONFIG_SECURITY */ 469 470 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 471 { 472 return 0; 473 } 474 475 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 476 { 477 return 0; 478 } 479 480 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 481 { 482 return 0; 483 } 484 485 static inline void security_free_mnt_opts(void **mnt_opts) 486 { 487 } 488 489 /* 490 * This is the default capabilities functionality. Most of these functions 491 * are just stubbed out, but a few must call the proper capable code. 492 */ 493 494 static inline int security_init(void) 495 { 496 return 0; 497 } 498 499 static inline int early_security_init(void) 500 { 501 return 0; 502 } 503 504 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 505 { 506 return 0; 507 } 508 509 static inline int security_binder_transaction(struct task_struct *from, 510 struct task_struct *to) 511 { 512 return 0; 513 } 514 515 static inline int security_binder_transfer_binder(struct task_struct *from, 516 struct task_struct *to) 517 { 518 return 0; 519 } 520 521 static inline int security_binder_transfer_file(struct task_struct *from, 522 struct task_struct *to, 523 struct file *file) 524 { 525 return 0; 526 } 527 528 static inline int security_ptrace_access_check(struct task_struct *child, 529 unsigned int mode) 530 { 531 return cap_ptrace_access_check(child, mode); 532 } 533 534 static inline int security_ptrace_traceme(struct task_struct *parent) 535 { 536 return cap_ptrace_traceme(parent); 537 } 538 539 static inline int security_capget(struct task_struct *target, 540 kernel_cap_t *effective, 541 kernel_cap_t *inheritable, 542 kernel_cap_t *permitted) 543 { 544 return cap_capget(target, effective, inheritable, permitted); 545 } 546 547 static inline int security_capset(struct cred *new, 548 const struct cred *old, 549 const kernel_cap_t *effective, 550 const kernel_cap_t *inheritable, 551 const kernel_cap_t *permitted) 552 { 553 return cap_capset(new, old, effective, inheritable, permitted); 554 } 555 556 static inline int security_capable(const struct cred *cred, 557 struct user_namespace *ns, 558 int cap, 559 unsigned int opts) 560 { 561 return cap_capable(cred, ns, cap, opts); 562 } 563 564 static inline int security_quotactl(int cmds, int type, int id, 565 struct super_block *sb) 566 { 567 return 0; 568 } 569 570 static inline int security_quota_on(struct dentry *dentry) 571 { 572 return 0; 573 } 574 575 static inline int security_syslog(int type) 576 { 577 return 0; 578 } 579 580 static inline int security_settime64(const struct timespec64 *ts, 581 const struct timezone *tz) 582 { 583 return cap_settime(ts, tz); 584 } 585 586 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 587 { 588 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 589 } 590 591 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 592 { 593 return 0; 594 } 595 596 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 597 struct file *file) 598 { 599 return cap_bprm_creds_from_file(bprm, file); 600 } 601 602 static inline int security_bprm_check(struct linux_binprm *bprm) 603 { 604 return 0; 605 } 606 607 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 608 { 609 } 610 611 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 612 { 613 } 614 615 static inline int security_fs_context_dup(struct fs_context *fc, 616 struct fs_context *src_fc) 617 { 618 return 0; 619 } 620 static inline int security_fs_context_parse_param(struct fs_context *fc, 621 struct fs_parameter *param) 622 { 623 return -ENOPARAM; 624 } 625 626 static inline int security_sb_alloc(struct super_block *sb) 627 { 628 return 0; 629 } 630 631 static inline void security_sb_free(struct super_block *sb) 632 { } 633 634 static inline int security_sb_eat_lsm_opts(char *options, 635 void **mnt_opts) 636 { 637 return 0; 638 } 639 640 static inline int security_sb_remount(struct super_block *sb, 641 void *mnt_opts) 642 { 643 return 0; 644 } 645 646 static inline int security_sb_kern_mount(struct super_block *sb) 647 { 648 return 0; 649 } 650 651 static inline int security_sb_show_options(struct seq_file *m, 652 struct super_block *sb) 653 { 654 return 0; 655 } 656 657 static inline int security_sb_statfs(struct dentry *dentry) 658 { 659 return 0; 660 } 661 662 static inline int security_sb_mount(const char *dev_name, const struct path *path, 663 const char *type, unsigned long flags, 664 void *data) 665 { 666 return 0; 667 } 668 669 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 670 { 671 return 0; 672 } 673 674 static inline int security_sb_pivotroot(const struct path *old_path, 675 const struct path *new_path) 676 { 677 return 0; 678 } 679 680 static inline int security_sb_set_mnt_opts(struct super_block *sb, 681 void *mnt_opts, 682 unsigned long kern_flags, 683 unsigned long *set_kern_flags) 684 { 685 return 0; 686 } 687 688 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 689 struct super_block *newsb, 690 unsigned long kern_flags, 691 unsigned long *set_kern_flags) 692 { 693 return 0; 694 } 695 696 static inline int security_add_mnt_opt(const char *option, const char *val, 697 int len, void **mnt_opts) 698 { 699 return 0; 700 } 701 702 static inline int security_move_mount(const struct path *from_path, 703 const struct path *to_path) 704 { 705 return 0; 706 } 707 708 static inline int security_path_notify(const struct path *path, u64 mask, 709 unsigned int obj_type) 710 { 711 return 0; 712 } 713 714 static inline int security_inode_alloc(struct inode *inode) 715 { 716 return 0; 717 } 718 719 static inline void security_inode_free(struct inode *inode) 720 { } 721 722 static inline int security_dentry_init_security(struct dentry *dentry, 723 int mode, 724 const struct qstr *name, 725 void **ctx, 726 u32 *ctxlen) 727 { 728 return -EOPNOTSUPP; 729 } 730 731 static inline int security_dentry_create_files_as(struct dentry *dentry, 732 int mode, struct qstr *name, 733 const struct cred *old, 734 struct cred *new) 735 { 736 return 0; 737 } 738 739 740 static inline int security_inode_init_security(struct inode *inode, 741 struct inode *dir, 742 const struct qstr *qstr, 743 const initxattrs xattrs, 744 void *fs_data) 745 { 746 return 0; 747 } 748 749 static inline int security_old_inode_init_security(struct inode *inode, 750 struct inode *dir, 751 const struct qstr *qstr, 752 const char **name, 753 void **value, size_t *len) 754 { 755 return -EOPNOTSUPP; 756 } 757 758 static inline int security_inode_create(struct inode *dir, 759 struct dentry *dentry, 760 umode_t mode) 761 { 762 return 0; 763 } 764 765 static inline int security_inode_link(struct dentry *old_dentry, 766 struct inode *dir, 767 struct dentry *new_dentry) 768 { 769 return 0; 770 } 771 772 static inline int security_inode_unlink(struct inode *dir, 773 struct dentry *dentry) 774 { 775 return 0; 776 } 777 778 static inline int security_inode_symlink(struct inode *dir, 779 struct dentry *dentry, 780 const char *old_name) 781 { 782 return 0; 783 } 784 785 static inline int security_inode_mkdir(struct inode *dir, 786 struct dentry *dentry, 787 int mode) 788 { 789 return 0; 790 } 791 792 static inline int security_inode_rmdir(struct inode *dir, 793 struct dentry *dentry) 794 { 795 return 0; 796 } 797 798 static inline int security_inode_mknod(struct inode *dir, 799 struct dentry *dentry, 800 int mode, dev_t dev) 801 { 802 return 0; 803 } 804 805 static inline int security_inode_rename(struct inode *old_dir, 806 struct dentry *old_dentry, 807 struct inode *new_dir, 808 struct dentry *new_dentry, 809 unsigned int flags) 810 { 811 return 0; 812 } 813 814 static inline int security_inode_readlink(struct dentry *dentry) 815 { 816 return 0; 817 } 818 819 static inline int security_inode_follow_link(struct dentry *dentry, 820 struct inode *inode, 821 bool rcu) 822 { 823 return 0; 824 } 825 826 static inline int security_inode_permission(struct inode *inode, int mask) 827 { 828 return 0; 829 } 830 831 static inline int security_inode_setattr(struct dentry *dentry, 832 struct iattr *attr) 833 { 834 return 0; 835 } 836 837 static inline int security_inode_getattr(const struct path *path) 838 { 839 return 0; 840 } 841 842 static inline int security_inode_setxattr(struct user_namespace *mnt_userns, 843 struct dentry *dentry, const char *name, const void *value, 844 size_t size, int flags) 845 { 846 return cap_inode_setxattr(dentry, name, value, size, flags); 847 } 848 849 static inline void security_inode_post_setxattr(struct dentry *dentry, 850 const char *name, const void *value, size_t size, int flags) 851 { } 852 853 static inline int security_inode_getxattr(struct dentry *dentry, 854 const char *name) 855 { 856 return 0; 857 } 858 859 static inline int security_inode_listxattr(struct dentry *dentry) 860 { 861 return 0; 862 } 863 864 static inline int security_inode_removexattr(struct user_namespace *mnt_userns, 865 struct dentry *dentry, 866 const char *name) 867 { 868 return cap_inode_removexattr(mnt_userns, dentry, name); 869 } 870 871 static inline int security_inode_need_killpriv(struct dentry *dentry) 872 { 873 return cap_inode_need_killpriv(dentry); 874 } 875 876 static inline int security_inode_killpriv(struct user_namespace *mnt_userns, 877 struct dentry *dentry) 878 { 879 return cap_inode_killpriv(mnt_userns, dentry); 880 } 881 882 static inline int security_inode_getsecurity(struct user_namespace *mnt_userns, 883 struct inode *inode, 884 const char *name, void **buffer, 885 bool alloc) 886 { 887 return cap_inode_getsecurity(mnt_userns, inode, name, buffer, alloc); 888 } 889 890 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 891 { 892 return -EOPNOTSUPP; 893 } 894 895 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 896 { 897 return 0; 898 } 899 900 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 901 { 902 *secid = 0; 903 } 904 905 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 906 { 907 return 0; 908 } 909 910 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 911 struct kernfs_node *kn) 912 { 913 return 0; 914 } 915 916 static inline int security_inode_copy_up_xattr(const char *name) 917 { 918 return -EOPNOTSUPP; 919 } 920 921 static inline int security_file_permission(struct file *file, int mask) 922 { 923 return 0; 924 } 925 926 static inline int security_file_alloc(struct file *file) 927 { 928 return 0; 929 } 930 931 static inline void security_file_free(struct file *file) 932 { } 933 934 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 935 unsigned long arg) 936 { 937 return 0; 938 } 939 940 static inline int security_mmap_file(struct file *file, unsigned long prot, 941 unsigned long flags) 942 { 943 return 0; 944 } 945 946 static inline int security_mmap_addr(unsigned long addr) 947 { 948 return cap_mmap_addr(addr); 949 } 950 951 static inline int security_file_mprotect(struct vm_area_struct *vma, 952 unsigned long reqprot, 953 unsigned long prot) 954 { 955 return 0; 956 } 957 958 static inline int security_file_lock(struct file *file, unsigned int cmd) 959 { 960 return 0; 961 } 962 963 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 964 unsigned long arg) 965 { 966 return 0; 967 } 968 969 static inline void security_file_set_fowner(struct file *file) 970 { 971 return; 972 } 973 974 static inline int security_file_send_sigiotask(struct task_struct *tsk, 975 struct fown_struct *fown, 976 int sig) 977 { 978 return 0; 979 } 980 981 static inline int security_file_receive(struct file *file) 982 { 983 return 0; 984 } 985 986 static inline int security_file_open(struct file *file) 987 { 988 return 0; 989 } 990 991 static inline int security_task_alloc(struct task_struct *task, 992 unsigned long clone_flags) 993 { 994 return 0; 995 } 996 997 static inline void security_task_free(struct task_struct *task) 998 { } 999 1000 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1001 { 1002 return 0; 1003 } 1004 1005 static inline void security_cred_free(struct cred *cred) 1006 { } 1007 1008 static inline int security_prepare_creds(struct cred *new, 1009 const struct cred *old, 1010 gfp_t gfp) 1011 { 1012 return 0; 1013 } 1014 1015 static inline void security_transfer_creds(struct cred *new, 1016 const struct cred *old) 1017 { 1018 } 1019 1020 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1021 { 1022 return 0; 1023 } 1024 1025 static inline int security_kernel_create_files_as(struct cred *cred, 1026 struct inode *inode) 1027 { 1028 return 0; 1029 } 1030 1031 static inline int security_kernel_module_request(char *kmod_name) 1032 { 1033 return 0; 1034 } 1035 1036 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1037 { 1038 return 0; 1039 } 1040 1041 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1042 enum kernel_load_data_id id, 1043 char *description) 1044 { 1045 return 0; 1046 } 1047 1048 static inline int security_kernel_read_file(struct file *file, 1049 enum kernel_read_file_id id, 1050 bool contents) 1051 { 1052 return 0; 1053 } 1054 1055 static inline int security_kernel_post_read_file(struct file *file, 1056 char *buf, loff_t size, 1057 enum kernel_read_file_id id) 1058 { 1059 return 0; 1060 } 1061 1062 static inline int security_task_fix_setuid(struct cred *new, 1063 const struct cred *old, 1064 int flags) 1065 { 1066 return cap_task_fix_setuid(new, old, flags); 1067 } 1068 1069 static inline int security_task_fix_setgid(struct cred *new, 1070 const struct cred *old, 1071 int flags) 1072 { 1073 return 0; 1074 } 1075 1076 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1077 { 1078 return 0; 1079 } 1080 1081 static inline int security_task_getpgid(struct task_struct *p) 1082 { 1083 return 0; 1084 } 1085 1086 static inline int security_task_getsid(struct task_struct *p) 1087 { 1088 return 0; 1089 } 1090 1091 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1092 { 1093 *secid = 0; 1094 } 1095 1096 static inline int security_task_setnice(struct task_struct *p, int nice) 1097 { 1098 return cap_task_setnice(p, nice); 1099 } 1100 1101 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1102 { 1103 return cap_task_setioprio(p, ioprio); 1104 } 1105 1106 static inline int security_task_getioprio(struct task_struct *p) 1107 { 1108 return 0; 1109 } 1110 1111 static inline int security_task_prlimit(const struct cred *cred, 1112 const struct cred *tcred, 1113 unsigned int flags) 1114 { 1115 return 0; 1116 } 1117 1118 static inline int security_task_setrlimit(struct task_struct *p, 1119 unsigned int resource, 1120 struct rlimit *new_rlim) 1121 { 1122 return 0; 1123 } 1124 1125 static inline int security_task_setscheduler(struct task_struct *p) 1126 { 1127 return cap_task_setscheduler(p); 1128 } 1129 1130 static inline int security_task_getscheduler(struct task_struct *p) 1131 { 1132 return 0; 1133 } 1134 1135 static inline int security_task_movememory(struct task_struct *p) 1136 { 1137 return 0; 1138 } 1139 1140 static inline int security_task_kill(struct task_struct *p, 1141 struct kernel_siginfo *info, int sig, 1142 const struct cred *cred) 1143 { 1144 return 0; 1145 } 1146 1147 static inline int security_task_prctl(int option, unsigned long arg2, 1148 unsigned long arg3, 1149 unsigned long arg4, 1150 unsigned long arg5) 1151 { 1152 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1153 } 1154 1155 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1156 { } 1157 1158 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1159 short flag) 1160 { 1161 return 0; 1162 } 1163 1164 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1165 { 1166 *secid = 0; 1167 } 1168 1169 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1170 { 1171 return 0; 1172 } 1173 1174 static inline void security_msg_msg_free(struct msg_msg *msg) 1175 { } 1176 1177 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1178 { 1179 return 0; 1180 } 1181 1182 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1183 { } 1184 1185 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1186 int msqflg) 1187 { 1188 return 0; 1189 } 1190 1191 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1192 { 1193 return 0; 1194 } 1195 1196 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1197 struct msg_msg *msg, int msqflg) 1198 { 1199 return 0; 1200 } 1201 1202 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1203 struct msg_msg *msg, 1204 struct task_struct *target, 1205 long type, int mode) 1206 { 1207 return 0; 1208 } 1209 1210 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1211 { 1212 return 0; 1213 } 1214 1215 static inline void security_shm_free(struct kern_ipc_perm *shp) 1216 { } 1217 1218 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1219 int shmflg) 1220 { 1221 return 0; 1222 } 1223 1224 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1225 { 1226 return 0; 1227 } 1228 1229 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1230 char __user *shmaddr, int shmflg) 1231 { 1232 return 0; 1233 } 1234 1235 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1236 { 1237 return 0; 1238 } 1239 1240 static inline void security_sem_free(struct kern_ipc_perm *sma) 1241 { } 1242 1243 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1244 { 1245 return 0; 1246 } 1247 1248 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1249 { 1250 return 0; 1251 } 1252 1253 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1254 struct sembuf *sops, unsigned nsops, 1255 int alter) 1256 { 1257 return 0; 1258 } 1259 1260 static inline void security_d_instantiate(struct dentry *dentry, 1261 struct inode *inode) 1262 { } 1263 1264 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1265 char *name, char **value) 1266 { 1267 return -EINVAL; 1268 } 1269 1270 static inline int security_setprocattr(const char *lsm, char *name, 1271 void *value, size_t size) 1272 { 1273 return -EINVAL; 1274 } 1275 1276 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1277 { 1278 return 0; 1279 } 1280 1281 static inline int security_ismaclabel(const char *name) 1282 { 1283 return 0; 1284 } 1285 1286 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1287 { 1288 return -EOPNOTSUPP; 1289 } 1290 1291 static inline int security_secctx_to_secid(const char *secdata, 1292 u32 seclen, 1293 u32 *secid) 1294 { 1295 return -EOPNOTSUPP; 1296 } 1297 1298 static inline void security_release_secctx(char *secdata, u32 seclen) 1299 { 1300 } 1301 1302 static inline void security_inode_invalidate_secctx(struct inode *inode) 1303 { 1304 } 1305 1306 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1307 { 1308 return -EOPNOTSUPP; 1309 } 1310 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1311 { 1312 return -EOPNOTSUPP; 1313 } 1314 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1315 { 1316 return -EOPNOTSUPP; 1317 } 1318 static inline int security_locked_down(enum lockdown_reason what) 1319 { 1320 return 0; 1321 } 1322 #endif /* CONFIG_SECURITY */ 1323 1324 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1325 int security_post_notification(const struct cred *w_cred, 1326 const struct cred *cred, 1327 struct watch_notification *n); 1328 #else 1329 static inline int security_post_notification(const struct cred *w_cred, 1330 const struct cred *cred, 1331 struct watch_notification *n) 1332 { 1333 return 0; 1334 } 1335 #endif 1336 1337 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1338 int security_watch_key(struct key *key); 1339 #else 1340 static inline int security_watch_key(struct key *key) 1341 { 1342 return 0; 1343 } 1344 #endif 1345 1346 #ifdef CONFIG_SECURITY_NETWORK 1347 1348 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1349 int security_unix_may_send(struct socket *sock, struct socket *other); 1350 int security_socket_create(int family, int type, int protocol, int kern); 1351 int security_socket_post_create(struct socket *sock, int family, 1352 int type, int protocol, int kern); 1353 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1354 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1355 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1356 int security_socket_listen(struct socket *sock, int backlog); 1357 int security_socket_accept(struct socket *sock, struct socket *newsock); 1358 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1359 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1360 int size, int flags); 1361 int security_socket_getsockname(struct socket *sock); 1362 int security_socket_getpeername(struct socket *sock); 1363 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1364 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1365 int security_socket_shutdown(struct socket *sock, int how); 1366 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1367 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1368 int __user *optlen, unsigned len); 1369 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1370 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1371 void security_sk_free(struct sock *sk); 1372 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1373 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic); 1374 void security_req_classify_flow(const struct request_sock *req, 1375 struct flowi_common *flic); 1376 void security_sock_graft(struct sock*sk, struct socket *parent); 1377 int security_inet_conn_request(const struct sock *sk, 1378 struct sk_buff *skb, struct request_sock *req); 1379 void security_inet_csk_clone(struct sock *newsk, 1380 const struct request_sock *req); 1381 void security_inet_conn_established(struct sock *sk, 1382 struct sk_buff *skb); 1383 int security_secmark_relabel_packet(u32 secid); 1384 void security_secmark_refcount_inc(void); 1385 void security_secmark_refcount_dec(void); 1386 int security_tun_dev_alloc_security(void **security); 1387 void security_tun_dev_free_security(void *security); 1388 int security_tun_dev_create(void); 1389 int security_tun_dev_attach_queue(void *security); 1390 int security_tun_dev_attach(struct sock *sk, void *security); 1391 int security_tun_dev_open(void *security); 1392 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1393 int security_sctp_bind_connect(struct sock *sk, int optname, 1394 struct sockaddr *address, int addrlen); 1395 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1396 struct sock *newsk); 1397 1398 #else /* CONFIG_SECURITY_NETWORK */ 1399 static inline int security_unix_stream_connect(struct sock *sock, 1400 struct sock *other, 1401 struct sock *newsk) 1402 { 1403 return 0; 1404 } 1405 1406 static inline int security_unix_may_send(struct socket *sock, 1407 struct socket *other) 1408 { 1409 return 0; 1410 } 1411 1412 static inline int security_socket_create(int family, int type, 1413 int protocol, int kern) 1414 { 1415 return 0; 1416 } 1417 1418 static inline int security_socket_post_create(struct socket *sock, 1419 int family, 1420 int type, 1421 int protocol, int kern) 1422 { 1423 return 0; 1424 } 1425 1426 static inline int security_socket_socketpair(struct socket *socka, 1427 struct socket *sockb) 1428 { 1429 return 0; 1430 } 1431 1432 static inline int security_socket_bind(struct socket *sock, 1433 struct sockaddr *address, 1434 int addrlen) 1435 { 1436 return 0; 1437 } 1438 1439 static inline int security_socket_connect(struct socket *sock, 1440 struct sockaddr *address, 1441 int addrlen) 1442 { 1443 return 0; 1444 } 1445 1446 static inline int security_socket_listen(struct socket *sock, int backlog) 1447 { 1448 return 0; 1449 } 1450 1451 static inline int security_socket_accept(struct socket *sock, 1452 struct socket *newsock) 1453 { 1454 return 0; 1455 } 1456 1457 static inline int security_socket_sendmsg(struct socket *sock, 1458 struct msghdr *msg, int size) 1459 { 1460 return 0; 1461 } 1462 1463 static inline int security_socket_recvmsg(struct socket *sock, 1464 struct msghdr *msg, int size, 1465 int flags) 1466 { 1467 return 0; 1468 } 1469 1470 static inline int security_socket_getsockname(struct socket *sock) 1471 { 1472 return 0; 1473 } 1474 1475 static inline int security_socket_getpeername(struct socket *sock) 1476 { 1477 return 0; 1478 } 1479 1480 static inline int security_socket_getsockopt(struct socket *sock, 1481 int level, int optname) 1482 { 1483 return 0; 1484 } 1485 1486 static inline int security_socket_setsockopt(struct socket *sock, 1487 int level, int optname) 1488 { 1489 return 0; 1490 } 1491 1492 static inline int security_socket_shutdown(struct socket *sock, int how) 1493 { 1494 return 0; 1495 } 1496 static inline int security_sock_rcv_skb(struct sock *sk, 1497 struct sk_buff *skb) 1498 { 1499 return 0; 1500 } 1501 1502 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1503 int __user *optlen, unsigned len) 1504 { 1505 return -ENOPROTOOPT; 1506 } 1507 1508 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1509 { 1510 return -ENOPROTOOPT; 1511 } 1512 1513 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1514 { 1515 return 0; 1516 } 1517 1518 static inline void security_sk_free(struct sock *sk) 1519 { 1520 } 1521 1522 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1523 { 1524 } 1525 1526 static inline void security_sk_classify_flow(struct sock *sk, 1527 struct flowi_common *flic) 1528 { 1529 } 1530 1531 static inline void security_req_classify_flow(const struct request_sock *req, 1532 struct flowi_common *flic) 1533 { 1534 } 1535 1536 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1537 { 1538 } 1539 1540 static inline int security_inet_conn_request(const struct sock *sk, 1541 struct sk_buff *skb, struct request_sock *req) 1542 { 1543 return 0; 1544 } 1545 1546 static inline void security_inet_csk_clone(struct sock *newsk, 1547 const struct request_sock *req) 1548 { 1549 } 1550 1551 static inline void security_inet_conn_established(struct sock *sk, 1552 struct sk_buff *skb) 1553 { 1554 } 1555 1556 static inline int security_secmark_relabel_packet(u32 secid) 1557 { 1558 return 0; 1559 } 1560 1561 static inline void security_secmark_refcount_inc(void) 1562 { 1563 } 1564 1565 static inline void security_secmark_refcount_dec(void) 1566 { 1567 } 1568 1569 static inline int security_tun_dev_alloc_security(void **security) 1570 { 1571 return 0; 1572 } 1573 1574 static inline void security_tun_dev_free_security(void *security) 1575 { 1576 } 1577 1578 static inline int security_tun_dev_create(void) 1579 { 1580 return 0; 1581 } 1582 1583 static inline int security_tun_dev_attach_queue(void *security) 1584 { 1585 return 0; 1586 } 1587 1588 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1589 { 1590 return 0; 1591 } 1592 1593 static inline int security_tun_dev_open(void *security) 1594 { 1595 return 0; 1596 } 1597 1598 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1599 struct sk_buff *skb) 1600 { 1601 return 0; 1602 } 1603 1604 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1605 struct sockaddr *address, 1606 int addrlen) 1607 { 1608 return 0; 1609 } 1610 1611 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1612 struct sock *sk, 1613 struct sock *newsk) 1614 { 1615 } 1616 #endif /* CONFIG_SECURITY_NETWORK */ 1617 1618 #ifdef CONFIG_SECURITY_INFINIBAND 1619 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1620 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1621 int security_ib_alloc_security(void **sec); 1622 void security_ib_free_security(void *sec); 1623 #else /* CONFIG_SECURITY_INFINIBAND */ 1624 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1625 { 1626 return 0; 1627 } 1628 1629 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1630 { 1631 return 0; 1632 } 1633 1634 static inline int security_ib_alloc_security(void **sec) 1635 { 1636 return 0; 1637 } 1638 1639 static inline void security_ib_free_security(void *sec) 1640 { 1641 } 1642 #endif /* CONFIG_SECURITY_INFINIBAND */ 1643 1644 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1645 1646 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1647 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1648 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1649 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1650 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1651 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1652 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1653 struct xfrm_sec_ctx *polsec, u32 secid); 1654 int security_xfrm_state_delete(struct xfrm_state *x); 1655 void security_xfrm_state_free(struct xfrm_state *x); 1656 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1657 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1658 struct xfrm_policy *xp, 1659 const struct flowi_common *flic); 1660 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1661 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1662 1663 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1664 1665 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1666 struct xfrm_user_sec_ctx *sec_ctx, 1667 gfp_t gfp) 1668 { 1669 return 0; 1670 } 1671 1672 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1673 { 1674 return 0; 1675 } 1676 1677 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1678 { 1679 } 1680 1681 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1682 { 1683 return 0; 1684 } 1685 1686 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1687 struct xfrm_user_sec_ctx *sec_ctx) 1688 { 1689 return 0; 1690 } 1691 1692 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1693 struct xfrm_sec_ctx *polsec, u32 secid) 1694 { 1695 return 0; 1696 } 1697 1698 static inline void security_xfrm_state_free(struct xfrm_state *x) 1699 { 1700 } 1701 1702 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1703 { 1704 return 0; 1705 } 1706 1707 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1708 { 1709 return 0; 1710 } 1711 1712 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1713 struct xfrm_policy *xp, 1714 const struct flowi_common *flic) 1715 { 1716 return 1; 1717 } 1718 1719 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1720 { 1721 return 0; 1722 } 1723 1724 static inline void security_skb_classify_flow(struct sk_buff *skb, 1725 struct flowi_common *flic) 1726 { 1727 } 1728 1729 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1730 1731 #ifdef CONFIG_SECURITY_PATH 1732 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1733 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1734 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1735 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1736 unsigned int dev); 1737 int security_path_truncate(const struct path *path); 1738 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1739 const char *old_name); 1740 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1741 struct dentry *new_dentry); 1742 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1743 const struct path *new_dir, struct dentry *new_dentry, 1744 unsigned int flags); 1745 int security_path_chmod(const struct path *path, umode_t mode); 1746 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1747 int security_path_chroot(const struct path *path); 1748 #else /* CONFIG_SECURITY_PATH */ 1749 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1750 { 1751 return 0; 1752 } 1753 1754 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1755 umode_t mode) 1756 { 1757 return 0; 1758 } 1759 1760 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1761 { 1762 return 0; 1763 } 1764 1765 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1766 umode_t mode, unsigned int dev) 1767 { 1768 return 0; 1769 } 1770 1771 static inline int security_path_truncate(const struct path *path) 1772 { 1773 return 0; 1774 } 1775 1776 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1777 const char *old_name) 1778 { 1779 return 0; 1780 } 1781 1782 static inline int security_path_link(struct dentry *old_dentry, 1783 const struct path *new_dir, 1784 struct dentry *new_dentry) 1785 { 1786 return 0; 1787 } 1788 1789 static inline int security_path_rename(const struct path *old_dir, 1790 struct dentry *old_dentry, 1791 const struct path *new_dir, 1792 struct dentry *new_dentry, 1793 unsigned int flags) 1794 { 1795 return 0; 1796 } 1797 1798 static inline int security_path_chmod(const struct path *path, umode_t mode) 1799 { 1800 return 0; 1801 } 1802 1803 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1804 { 1805 return 0; 1806 } 1807 1808 static inline int security_path_chroot(const struct path *path) 1809 { 1810 return 0; 1811 } 1812 #endif /* CONFIG_SECURITY_PATH */ 1813 1814 #ifdef CONFIG_KEYS 1815 #ifdef CONFIG_SECURITY 1816 1817 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1818 void security_key_free(struct key *key); 1819 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1820 enum key_need_perm need_perm); 1821 int security_key_getsecurity(struct key *key, char **_buffer); 1822 1823 #else 1824 1825 static inline int security_key_alloc(struct key *key, 1826 const struct cred *cred, 1827 unsigned long flags) 1828 { 1829 return 0; 1830 } 1831 1832 static inline void security_key_free(struct key *key) 1833 { 1834 } 1835 1836 static inline int security_key_permission(key_ref_t key_ref, 1837 const struct cred *cred, 1838 enum key_need_perm need_perm) 1839 { 1840 return 0; 1841 } 1842 1843 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1844 { 1845 *_buffer = NULL; 1846 return 0; 1847 } 1848 1849 #endif 1850 #endif /* CONFIG_KEYS */ 1851 1852 #ifdef CONFIG_AUDIT 1853 #ifdef CONFIG_SECURITY 1854 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1855 int security_audit_rule_known(struct audit_krule *krule); 1856 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1857 void security_audit_rule_free(void *lsmrule); 1858 1859 #else 1860 1861 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1862 void **lsmrule) 1863 { 1864 return 0; 1865 } 1866 1867 static inline int security_audit_rule_known(struct audit_krule *krule) 1868 { 1869 return 0; 1870 } 1871 1872 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1873 void *lsmrule) 1874 { 1875 return 0; 1876 } 1877 1878 static inline void security_audit_rule_free(void *lsmrule) 1879 { } 1880 1881 #endif /* CONFIG_SECURITY */ 1882 #endif /* CONFIG_AUDIT */ 1883 1884 #ifdef CONFIG_SECURITYFS 1885 1886 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1887 struct dentry *parent, void *data, 1888 const struct file_operations *fops); 1889 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1890 struct dentry *securityfs_create_symlink(const char *name, 1891 struct dentry *parent, 1892 const char *target, 1893 const struct inode_operations *iops); 1894 extern void securityfs_remove(struct dentry *dentry); 1895 1896 #else /* CONFIG_SECURITYFS */ 1897 1898 static inline struct dentry *securityfs_create_dir(const char *name, 1899 struct dentry *parent) 1900 { 1901 return ERR_PTR(-ENODEV); 1902 } 1903 1904 static inline struct dentry *securityfs_create_file(const char *name, 1905 umode_t mode, 1906 struct dentry *parent, 1907 void *data, 1908 const struct file_operations *fops) 1909 { 1910 return ERR_PTR(-ENODEV); 1911 } 1912 1913 static inline struct dentry *securityfs_create_symlink(const char *name, 1914 struct dentry *parent, 1915 const char *target, 1916 const struct inode_operations *iops) 1917 { 1918 return ERR_PTR(-ENODEV); 1919 } 1920 1921 static inline void securityfs_remove(struct dentry *dentry) 1922 {} 1923 1924 #endif 1925 1926 #ifdef CONFIG_BPF_SYSCALL 1927 union bpf_attr; 1928 struct bpf_map; 1929 struct bpf_prog; 1930 struct bpf_prog_aux; 1931 #ifdef CONFIG_SECURITY 1932 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1933 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1934 extern int security_bpf_prog(struct bpf_prog *prog); 1935 extern int security_bpf_map_alloc(struct bpf_map *map); 1936 extern void security_bpf_map_free(struct bpf_map *map); 1937 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1938 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1939 #else 1940 static inline int security_bpf(int cmd, union bpf_attr *attr, 1941 unsigned int size) 1942 { 1943 return 0; 1944 } 1945 1946 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1947 { 1948 return 0; 1949 } 1950 1951 static inline int security_bpf_prog(struct bpf_prog *prog) 1952 { 1953 return 0; 1954 } 1955 1956 static inline int security_bpf_map_alloc(struct bpf_map *map) 1957 { 1958 return 0; 1959 } 1960 1961 static inline void security_bpf_map_free(struct bpf_map *map) 1962 { } 1963 1964 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1965 { 1966 return 0; 1967 } 1968 1969 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1970 { } 1971 #endif /* CONFIG_SECURITY */ 1972 #endif /* CONFIG_BPF_SYSCALL */ 1973 1974 #ifdef CONFIG_PERF_EVENTS 1975 struct perf_event_attr; 1976 struct perf_event; 1977 1978 #ifdef CONFIG_SECURITY 1979 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1980 extern int security_perf_event_alloc(struct perf_event *event); 1981 extern void security_perf_event_free(struct perf_event *event); 1982 extern int security_perf_event_read(struct perf_event *event); 1983 extern int security_perf_event_write(struct perf_event *event); 1984 #else 1985 static inline int security_perf_event_open(struct perf_event_attr *attr, 1986 int type) 1987 { 1988 return 0; 1989 } 1990 1991 static inline int security_perf_event_alloc(struct perf_event *event) 1992 { 1993 return 0; 1994 } 1995 1996 static inline void security_perf_event_free(struct perf_event *event) 1997 { 1998 } 1999 2000 static inline int security_perf_event_read(struct perf_event *event) 2001 { 2002 return 0; 2003 } 2004 2005 static inline int security_perf_event_write(struct perf_event *event) 2006 { 2007 return 0; 2008 } 2009 #endif /* CONFIG_SECURITY */ 2010 #endif /* CONFIG_PERF_EVENTS */ 2011 2012 #endif /* ! __LINUX_SECURITY_H */ 2013