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