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