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