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