1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/key.h> 27 #include <linux/capability.h> 28 #include <linux/fs.h> 29 #include <linux/slab.h> 30 #include <linux/err.h> 31 #include <linux/string.h> 32 #include <linux/mm.h> 33 #include <linux/fs.h> 34 35 struct linux_binprm; 36 struct cred; 37 struct rlimit; 38 struct kernel_siginfo; 39 struct sembuf; 40 struct kern_ipc_perm; 41 struct audit_context; 42 struct super_block; 43 struct inode; 44 struct dentry; 45 struct file; 46 struct vfsmount; 47 struct path; 48 struct qstr; 49 struct iattr; 50 struct fown_struct; 51 struct file_operations; 52 struct msg_msg; 53 struct xattr; 54 struct kernfs_node; 55 struct xfrm_sec_ctx; 56 struct mm_struct; 57 struct fs_context; 58 struct fs_parameter; 59 enum fs_value_type; 60 61 /* Default (no) options for the capable function */ 62 #define CAP_OPT_NONE 0x0 63 /* If capable should audit the security request */ 64 #define CAP_OPT_NOAUDIT BIT(1) 65 /* If capable is being called by a setid function */ 66 #define CAP_OPT_INSETID BIT(2) 67 68 /* LSM Agnostic defines for fs_context::lsm_flags */ 69 #define SECURITY_LSM_NATIVE_LABELS 1 70 71 struct ctl_table; 72 struct audit_krule; 73 struct user_namespace; 74 struct timezone; 75 76 enum lsm_event { 77 LSM_POLICY_CHANGE, 78 }; 79 80 /* 81 * These are reasons that can be passed to the security_locked_down() 82 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 83 * ability for userland to modify kernel code) are placed before 84 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 85 * confidentiality (ie, the ability for userland to extract 86 * information from the running kernel that would otherwise be 87 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 88 * 89 * LSM authors should note that the semantics of any given lockdown 90 * reason are not guaranteed to be stable - the same reason may block 91 * one set of features in one kernel release, and a slightly different 92 * set of features in a later kernel release. LSMs that seek to expose 93 * lockdown policy at any level of granularity other than "none", 94 * "integrity" or "confidentiality" are responsible for either 95 * ensuring that they expose a consistent level of functionality to 96 * userland, or ensuring that userland is aware that this is 97 * potentially a moving target. It is easy to misuse this information 98 * in a way that could break userspace. Please be careful not to do 99 * so. 100 * 101 * If you add to this, remember to extend lockdown_reasons in 102 * security/lockdown/lockdown.c. 103 */ 104 enum lockdown_reason { 105 LOCKDOWN_NONE, 106 LOCKDOWN_MODULE_SIGNATURE, 107 LOCKDOWN_DEV_MEM, 108 LOCKDOWN_KEXEC, 109 LOCKDOWN_HIBERNATION, 110 LOCKDOWN_PCI_ACCESS, 111 LOCKDOWN_IOPORT, 112 LOCKDOWN_MSR, 113 LOCKDOWN_ACPI_TABLES, 114 LOCKDOWN_PCMCIA_CIS, 115 LOCKDOWN_TIOCSSERIAL, 116 LOCKDOWN_MODULE_PARAMETERS, 117 LOCKDOWN_MMIOTRACE, 118 LOCKDOWN_INTEGRITY_MAX, 119 LOCKDOWN_KCORE, 120 LOCKDOWN_KPROBES, 121 LOCKDOWN_BPF_READ, 122 LOCKDOWN_PERF, 123 LOCKDOWN_CONFIDENTIALITY_MAX, 124 }; 125 126 /* These functions are in security/commoncap.c */ 127 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 128 int cap, unsigned int opts); 129 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 130 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 131 extern int cap_ptrace_traceme(struct task_struct *parent); 132 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 133 extern int cap_capset(struct cred *new, const struct cred *old, 134 const kernel_cap_t *effective, 135 const kernel_cap_t *inheritable, 136 const kernel_cap_t *permitted); 137 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 138 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 139 const void *value, size_t size, int flags); 140 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 141 extern int cap_inode_need_killpriv(struct dentry *dentry); 142 extern int cap_inode_killpriv(struct dentry *dentry); 143 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 144 void **buffer, bool alloc); 145 extern int cap_mmap_addr(unsigned long addr); 146 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 147 unsigned long prot, unsigned long flags); 148 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 149 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 150 unsigned long arg4, unsigned long arg5); 151 extern int cap_task_setscheduler(struct task_struct *p); 152 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 153 extern int cap_task_setnice(struct task_struct *p, int nice); 154 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 155 156 struct msghdr; 157 struct sk_buff; 158 struct sock; 159 struct sockaddr; 160 struct socket; 161 struct flowi; 162 struct dst_entry; 163 struct xfrm_selector; 164 struct xfrm_policy; 165 struct xfrm_state; 166 struct xfrm_user_sec_ctx; 167 struct seq_file; 168 struct sctp_endpoint; 169 170 #ifdef CONFIG_MMU 171 extern unsigned long mmap_min_addr; 172 extern unsigned long dac_mmap_min_addr; 173 #else 174 #define mmap_min_addr 0UL 175 #define dac_mmap_min_addr 0UL 176 #endif 177 178 /* 179 * Values used in the task_security_ops calls 180 */ 181 /* setuid or setgid, id0 == uid or gid */ 182 #define LSM_SETID_ID 1 183 184 /* setreuid or setregid, id0 == real, id1 == eff */ 185 #define LSM_SETID_RE 2 186 187 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 188 #define LSM_SETID_RES 4 189 190 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 191 #define LSM_SETID_FS 8 192 193 /* Flags for security_task_prlimit(). */ 194 #define LSM_PRLIMIT_READ 1 195 #define LSM_PRLIMIT_WRITE 2 196 197 /* forward declares to avoid warnings */ 198 struct sched_param; 199 struct request_sock; 200 201 /* bprm->unsafe reasons */ 202 #define LSM_UNSAFE_SHARE 1 203 #define LSM_UNSAFE_PTRACE 2 204 #define LSM_UNSAFE_NO_NEW_PRIVS 4 205 206 #ifdef CONFIG_MMU 207 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 208 void __user *buffer, size_t *lenp, loff_t *ppos); 209 #endif 210 211 /* security_inode_init_security callback function to write xattrs */ 212 typedef int (*initxattrs) (struct inode *inode, 213 const struct xattr *xattr_array, void *fs_data); 214 215 216 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 217 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 218 #define __data_id_stringify(dummy, str) #str, 219 220 enum kernel_load_data_id { 221 __kernel_read_file_id(__data_id_enumify) 222 }; 223 224 static const char * const kernel_load_data_str[] = { 225 __kernel_read_file_id(__data_id_stringify) 226 }; 227 228 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 229 { 230 if ((unsigned)id >= LOADING_MAX_ID) 231 return kernel_load_data_str[LOADING_UNKNOWN]; 232 233 return kernel_load_data_str[id]; 234 } 235 236 #ifdef CONFIG_SECURITY 237 238 int call_lsm_notifier(enum lsm_event event, void *data); 239 int register_lsm_notifier(struct notifier_block *nb); 240 int unregister_lsm_notifier(struct notifier_block *nb); 241 242 /* prototypes */ 243 extern int security_init(void); 244 extern int early_security_init(void); 245 246 /* Security operations */ 247 int security_binder_set_context_mgr(struct task_struct *mgr); 248 int security_binder_transaction(struct task_struct *from, 249 struct task_struct *to); 250 int security_binder_transfer_binder(struct task_struct *from, 251 struct task_struct *to); 252 int security_binder_transfer_file(struct task_struct *from, 253 struct task_struct *to, struct file *file); 254 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 255 int security_ptrace_traceme(struct task_struct *parent); 256 int security_capget(struct task_struct *target, 257 kernel_cap_t *effective, 258 kernel_cap_t *inheritable, 259 kernel_cap_t *permitted); 260 int security_capset(struct cred *new, const struct cred *old, 261 const kernel_cap_t *effective, 262 const kernel_cap_t *inheritable, 263 const kernel_cap_t *permitted); 264 int security_capable(const struct cred *cred, 265 struct user_namespace *ns, 266 int cap, 267 unsigned int opts); 268 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 269 int security_quota_on(struct dentry *dentry); 270 int security_syslog(int type); 271 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 272 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 273 int security_bprm_set_creds(struct linux_binprm *bprm); 274 int security_bprm_check(struct linux_binprm *bprm); 275 void security_bprm_committing_creds(struct linux_binprm *bprm); 276 void security_bprm_committed_creds(struct linux_binprm *bprm); 277 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 278 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 279 int security_sb_alloc(struct super_block *sb); 280 void security_sb_free(struct super_block *sb); 281 void security_free_mnt_opts(void **mnt_opts); 282 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 283 int security_sb_remount(struct super_block *sb, void *mnt_opts); 284 int security_sb_kern_mount(struct super_block *sb); 285 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 286 int security_sb_statfs(struct dentry *dentry); 287 int security_sb_mount(const char *dev_name, const struct path *path, 288 const char *type, unsigned long flags, void *data); 289 int security_sb_umount(struct vfsmount *mnt, int flags); 290 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 291 int security_sb_set_mnt_opts(struct super_block *sb, 292 void *mnt_opts, 293 unsigned long kern_flags, 294 unsigned long *set_kern_flags); 295 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 296 struct super_block *newsb, 297 unsigned long kern_flags, 298 unsigned long *set_kern_flags); 299 int security_add_mnt_opt(const char *option, const char *val, 300 int len, void **mnt_opts); 301 int security_move_mount(const struct path *from_path, const struct path *to_path); 302 int security_dentry_init_security(struct dentry *dentry, int mode, 303 const struct qstr *name, void **ctx, 304 u32 *ctxlen); 305 int security_dentry_create_files_as(struct dentry *dentry, int mode, 306 struct qstr *name, 307 const struct cred *old, 308 struct cred *new); 309 310 int security_inode_alloc(struct inode *inode); 311 void security_inode_free(struct inode *inode); 312 int security_inode_init_security(struct inode *inode, struct inode *dir, 313 const struct qstr *qstr, 314 initxattrs initxattrs, void *fs_data); 315 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 316 const struct qstr *qstr, const char **name, 317 void **value, size_t *len); 318 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 319 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 320 struct dentry *new_dentry); 321 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 322 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 323 const char *old_name); 324 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 325 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 326 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 327 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 328 struct inode *new_dir, struct dentry *new_dentry, 329 unsigned int flags); 330 int security_inode_readlink(struct dentry *dentry); 331 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 332 bool rcu); 333 int security_inode_permission(struct inode *inode, int mask); 334 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 335 int security_inode_getattr(const struct path *path); 336 int security_inode_setxattr(struct dentry *dentry, const char *name, 337 const void *value, size_t size, int flags); 338 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 339 const void *value, size_t size, int flags); 340 int security_inode_getxattr(struct dentry *dentry, const char *name); 341 int security_inode_listxattr(struct dentry *dentry); 342 int security_inode_removexattr(struct dentry *dentry, const char *name); 343 int security_inode_need_killpriv(struct dentry *dentry); 344 int security_inode_killpriv(struct dentry *dentry); 345 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 346 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 347 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 348 void security_inode_getsecid(struct inode *inode, u32 *secid); 349 int security_inode_copy_up(struct dentry *src, struct cred **new); 350 int security_inode_copy_up_xattr(const char *name); 351 int security_kernfs_init_security(struct kernfs_node *kn_dir, 352 struct kernfs_node *kn); 353 int security_file_permission(struct file *file, int mask); 354 int security_file_alloc(struct file *file); 355 void security_file_free(struct file *file); 356 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 357 int security_mmap_file(struct file *file, unsigned long prot, 358 unsigned long flags); 359 int security_mmap_addr(unsigned long addr); 360 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 361 unsigned long prot); 362 int security_file_lock(struct file *file, unsigned int cmd); 363 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 364 void security_file_set_fowner(struct file *file); 365 int security_file_send_sigiotask(struct task_struct *tsk, 366 struct fown_struct *fown, int sig); 367 int security_file_receive(struct file *file); 368 int security_file_open(struct file *file); 369 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 370 void security_task_free(struct task_struct *task); 371 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 372 void security_cred_free(struct cred *cred); 373 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 374 void security_transfer_creds(struct cred *new, const struct cred *old); 375 void security_cred_getsecid(const struct cred *c, u32 *secid); 376 int security_kernel_act_as(struct cred *new, u32 secid); 377 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 378 int security_kernel_module_request(char *kmod_name); 379 int security_kernel_load_data(enum kernel_load_data_id id); 380 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 381 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 382 enum kernel_read_file_id id); 383 int security_task_fix_setuid(struct cred *new, const struct cred *old, 384 int flags); 385 int security_task_setpgid(struct task_struct *p, pid_t pgid); 386 int security_task_getpgid(struct task_struct *p); 387 int security_task_getsid(struct task_struct *p); 388 void security_task_getsecid(struct task_struct *p, u32 *secid); 389 int security_task_setnice(struct task_struct *p, int nice); 390 int security_task_setioprio(struct task_struct *p, int ioprio); 391 int security_task_getioprio(struct task_struct *p); 392 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 393 unsigned int flags); 394 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 395 struct rlimit *new_rlim); 396 int security_task_setscheduler(struct task_struct *p); 397 int security_task_getscheduler(struct task_struct *p); 398 int security_task_movememory(struct task_struct *p); 399 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 400 int sig, const struct cred *cred); 401 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 402 unsigned long arg4, unsigned long arg5); 403 void security_task_to_inode(struct task_struct *p, struct inode *inode); 404 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 405 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 406 int security_msg_msg_alloc(struct msg_msg *msg); 407 void security_msg_msg_free(struct msg_msg *msg); 408 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 409 void security_msg_queue_free(struct kern_ipc_perm *msq); 410 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 411 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 412 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 413 struct msg_msg *msg, int msqflg); 414 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 415 struct task_struct *target, long type, int mode); 416 int security_shm_alloc(struct kern_ipc_perm *shp); 417 void security_shm_free(struct kern_ipc_perm *shp); 418 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 419 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 420 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 421 int security_sem_alloc(struct kern_ipc_perm *sma); 422 void security_sem_free(struct kern_ipc_perm *sma); 423 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 424 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 425 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 426 unsigned nsops, int alter); 427 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 428 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 429 char **value); 430 int security_setprocattr(const char *lsm, const char *name, void *value, 431 size_t size); 432 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 433 int security_ismaclabel(const char *name); 434 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 435 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 436 void security_release_secctx(char *secdata, u32 seclen); 437 438 void security_inode_invalidate_secctx(struct inode *inode); 439 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 440 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 441 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 442 int security_locked_down(enum lockdown_reason what); 443 #else /* CONFIG_SECURITY */ 444 445 static inline int call_lsm_notifier(enum lsm_event event, void *data) 446 { 447 return 0; 448 } 449 450 static inline int register_lsm_notifier(struct notifier_block *nb) 451 { 452 return 0; 453 } 454 455 static inline int unregister_lsm_notifier(struct notifier_block *nb) 456 { 457 return 0; 458 } 459 460 static inline void security_free_mnt_opts(void **mnt_opts) 461 { 462 } 463 464 /* 465 * This is the default capabilities functionality. Most of these functions 466 * are just stubbed out, but a few must call the proper capable code. 467 */ 468 469 static inline int security_init(void) 470 { 471 return 0; 472 } 473 474 static inline int early_security_init(void) 475 { 476 return 0; 477 } 478 479 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 480 { 481 return 0; 482 } 483 484 static inline int security_binder_transaction(struct task_struct *from, 485 struct task_struct *to) 486 { 487 return 0; 488 } 489 490 static inline int security_binder_transfer_binder(struct task_struct *from, 491 struct task_struct *to) 492 { 493 return 0; 494 } 495 496 static inline int security_binder_transfer_file(struct task_struct *from, 497 struct task_struct *to, 498 struct file *file) 499 { 500 return 0; 501 } 502 503 static inline int security_ptrace_access_check(struct task_struct *child, 504 unsigned int mode) 505 { 506 return cap_ptrace_access_check(child, mode); 507 } 508 509 static inline int security_ptrace_traceme(struct task_struct *parent) 510 { 511 return cap_ptrace_traceme(parent); 512 } 513 514 static inline int security_capget(struct task_struct *target, 515 kernel_cap_t *effective, 516 kernel_cap_t *inheritable, 517 kernel_cap_t *permitted) 518 { 519 return cap_capget(target, effective, inheritable, permitted); 520 } 521 522 static inline int security_capset(struct cred *new, 523 const struct cred *old, 524 const kernel_cap_t *effective, 525 const kernel_cap_t *inheritable, 526 const kernel_cap_t *permitted) 527 { 528 return cap_capset(new, old, effective, inheritable, permitted); 529 } 530 531 static inline int security_capable(const struct cred *cred, 532 struct user_namespace *ns, 533 int cap, 534 unsigned int opts) 535 { 536 return cap_capable(cred, ns, cap, opts); 537 } 538 539 static inline int security_quotactl(int cmds, int type, int id, 540 struct super_block *sb) 541 { 542 return 0; 543 } 544 545 static inline int security_quota_on(struct dentry *dentry) 546 { 547 return 0; 548 } 549 550 static inline int security_syslog(int type) 551 { 552 return 0; 553 } 554 555 static inline int security_settime64(const struct timespec64 *ts, 556 const struct timezone *tz) 557 { 558 return cap_settime(ts, tz); 559 } 560 561 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 562 { 563 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 564 } 565 566 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 567 { 568 return cap_bprm_set_creds(bprm); 569 } 570 571 static inline int security_bprm_check(struct linux_binprm *bprm) 572 { 573 return 0; 574 } 575 576 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 577 { 578 } 579 580 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 581 { 582 } 583 584 static inline int security_fs_context_dup(struct fs_context *fc, 585 struct fs_context *src_fc) 586 { 587 return 0; 588 } 589 static inline int security_fs_context_parse_param(struct fs_context *fc, 590 struct fs_parameter *param) 591 { 592 return -ENOPARAM; 593 } 594 595 static inline int security_sb_alloc(struct super_block *sb) 596 { 597 return 0; 598 } 599 600 static inline void security_sb_free(struct super_block *sb) 601 { } 602 603 static inline int security_sb_eat_lsm_opts(char *options, 604 void **mnt_opts) 605 { 606 return 0; 607 } 608 609 static inline int security_sb_remount(struct super_block *sb, 610 void *mnt_opts) 611 { 612 return 0; 613 } 614 615 static inline int security_sb_kern_mount(struct super_block *sb) 616 { 617 return 0; 618 } 619 620 static inline int security_sb_show_options(struct seq_file *m, 621 struct super_block *sb) 622 { 623 return 0; 624 } 625 626 static inline int security_sb_statfs(struct dentry *dentry) 627 { 628 return 0; 629 } 630 631 static inline int security_sb_mount(const char *dev_name, const struct path *path, 632 const char *type, unsigned long flags, 633 void *data) 634 { 635 return 0; 636 } 637 638 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 639 { 640 return 0; 641 } 642 643 static inline int security_sb_pivotroot(const struct path *old_path, 644 const struct path *new_path) 645 { 646 return 0; 647 } 648 649 static inline int security_sb_set_mnt_opts(struct super_block *sb, 650 void *mnt_opts, 651 unsigned long kern_flags, 652 unsigned long *set_kern_flags) 653 { 654 return 0; 655 } 656 657 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 658 struct super_block *newsb, 659 unsigned long kern_flags, 660 unsigned long *set_kern_flags) 661 { 662 return 0; 663 } 664 665 static inline int security_add_mnt_opt(const char *option, const char *val, 666 int len, void **mnt_opts) 667 { 668 return 0; 669 } 670 671 static inline int security_move_mount(const struct path *from_path, 672 const struct path *to_path) 673 { 674 return 0; 675 } 676 677 static inline int security_inode_alloc(struct inode *inode) 678 { 679 return 0; 680 } 681 682 static inline void security_inode_free(struct inode *inode) 683 { } 684 685 static inline int security_dentry_init_security(struct dentry *dentry, 686 int mode, 687 const struct qstr *name, 688 void **ctx, 689 u32 *ctxlen) 690 { 691 return -EOPNOTSUPP; 692 } 693 694 static inline int security_dentry_create_files_as(struct dentry *dentry, 695 int mode, struct qstr *name, 696 const struct cred *old, 697 struct cred *new) 698 { 699 return 0; 700 } 701 702 703 static inline int security_inode_init_security(struct inode *inode, 704 struct inode *dir, 705 const struct qstr *qstr, 706 const initxattrs xattrs, 707 void *fs_data) 708 { 709 return 0; 710 } 711 712 static inline int security_old_inode_init_security(struct inode *inode, 713 struct inode *dir, 714 const struct qstr *qstr, 715 const char **name, 716 void **value, size_t *len) 717 { 718 return -EOPNOTSUPP; 719 } 720 721 static inline int security_inode_create(struct inode *dir, 722 struct dentry *dentry, 723 umode_t mode) 724 { 725 return 0; 726 } 727 728 static inline int security_inode_link(struct dentry *old_dentry, 729 struct inode *dir, 730 struct dentry *new_dentry) 731 { 732 return 0; 733 } 734 735 static inline int security_inode_unlink(struct inode *dir, 736 struct dentry *dentry) 737 { 738 return 0; 739 } 740 741 static inline int security_inode_symlink(struct inode *dir, 742 struct dentry *dentry, 743 const char *old_name) 744 { 745 return 0; 746 } 747 748 static inline int security_inode_mkdir(struct inode *dir, 749 struct dentry *dentry, 750 int mode) 751 { 752 return 0; 753 } 754 755 static inline int security_inode_rmdir(struct inode *dir, 756 struct dentry *dentry) 757 { 758 return 0; 759 } 760 761 static inline int security_inode_mknod(struct inode *dir, 762 struct dentry *dentry, 763 int mode, dev_t dev) 764 { 765 return 0; 766 } 767 768 static inline int security_inode_rename(struct inode *old_dir, 769 struct dentry *old_dentry, 770 struct inode *new_dir, 771 struct dentry *new_dentry, 772 unsigned int flags) 773 { 774 return 0; 775 } 776 777 static inline int security_inode_readlink(struct dentry *dentry) 778 { 779 return 0; 780 } 781 782 static inline int security_inode_follow_link(struct dentry *dentry, 783 struct inode *inode, 784 bool rcu) 785 { 786 return 0; 787 } 788 789 static inline int security_inode_permission(struct inode *inode, int mask) 790 { 791 return 0; 792 } 793 794 static inline int security_inode_setattr(struct dentry *dentry, 795 struct iattr *attr) 796 { 797 return 0; 798 } 799 800 static inline int security_inode_getattr(const struct path *path) 801 { 802 return 0; 803 } 804 805 static inline int security_inode_setxattr(struct dentry *dentry, 806 const char *name, const void *value, size_t size, int flags) 807 { 808 return cap_inode_setxattr(dentry, name, value, size, flags); 809 } 810 811 static inline void security_inode_post_setxattr(struct dentry *dentry, 812 const char *name, const void *value, size_t size, int flags) 813 { } 814 815 static inline int security_inode_getxattr(struct dentry *dentry, 816 const char *name) 817 { 818 return 0; 819 } 820 821 static inline int security_inode_listxattr(struct dentry *dentry) 822 { 823 return 0; 824 } 825 826 static inline int security_inode_removexattr(struct dentry *dentry, 827 const char *name) 828 { 829 return cap_inode_removexattr(dentry, name); 830 } 831 832 static inline int security_inode_need_killpriv(struct dentry *dentry) 833 { 834 return cap_inode_need_killpriv(dentry); 835 } 836 837 static inline int security_inode_killpriv(struct dentry *dentry) 838 { 839 return cap_inode_killpriv(dentry); 840 } 841 842 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 843 { 844 return -EOPNOTSUPP; 845 } 846 847 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 848 { 849 return -EOPNOTSUPP; 850 } 851 852 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 853 { 854 return 0; 855 } 856 857 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 858 { 859 *secid = 0; 860 } 861 862 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 863 { 864 return 0; 865 } 866 867 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 868 struct kernfs_node *kn) 869 { 870 return 0; 871 } 872 873 static inline int security_inode_copy_up_xattr(const char *name) 874 { 875 return -EOPNOTSUPP; 876 } 877 878 static inline int security_file_permission(struct file *file, int mask) 879 { 880 return 0; 881 } 882 883 static inline int security_file_alloc(struct file *file) 884 { 885 return 0; 886 } 887 888 static inline void security_file_free(struct file *file) 889 { } 890 891 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 892 unsigned long arg) 893 { 894 return 0; 895 } 896 897 static inline int security_mmap_file(struct file *file, unsigned long prot, 898 unsigned long flags) 899 { 900 return 0; 901 } 902 903 static inline int security_mmap_addr(unsigned long addr) 904 { 905 return cap_mmap_addr(addr); 906 } 907 908 static inline int security_file_mprotect(struct vm_area_struct *vma, 909 unsigned long reqprot, 910 unsigned long prot) 911 { 912 return 0; 913 } 914 915 static inline int security_file_lock(struct file *file, unsigned int cmd) 916 { 917 return 0; 918 } 919 920 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 921 unsigned long arg) 922 { 923 return 0; 924 } 925 926 static inline void security_file_set_fowner(struct file *file) 927 { 928 return; 929 } 930 931 static inline int security_file_send_sigiotask(struct task_struct *tsk, 932 struct fown_struct *fown, 933 int sig) 934 { 935 return 0; 936 } 937 938 static inline int security_file_receive(struct file *file) 939 { 940 return 0; 941 } 942 943 static inline int security_file_open(struct file *file) 944 { 945 return 0; 946 } 947 948 static inline int security_task_alloc(struct task_struct *task, 949 unsigned long clone_flags) 950 { 951 return 0; 952 } 953 954 static inline void security_task_free(struct task_struct *task) 955 { } 956 957 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 958 { 959 return 0; 960 } 961 962 static inline void security_cred_free(struct cred *cred) 963 { } 964 965 static inline int security_prepare_creds(struct cred *new, 966 const struct cred *old, 967 gfp_t gfp) 968 { 969 return 0; 970 } 971 972 static inline void security_transfer_creds(struct cred *new, 973 const struct cred *old) 974 { 975 } 976 977 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 978 { 979 return 0; 980 } 981 982 static inline int security_kernel_create_files_as(struct cred *cred, 983 struct inode *inode) 984 { 985 return 0; 986 } 987 988 static inline int security_kernel_module_request(char *kmod_name) 989 { 990 return 0; 991 } 992 993 static inline int security_kernel_load_data(enum kernel_load_data_id id) 994 { 995 return 0; 996 } 997 998 static inline int security_kernel_read_file(struct file *file, 999 enum kernel_read_file_id id) 1000 { 1001 return 0; 1002 } 1003 1004 static inline int security_kernel_post_read_file(struct file *file, 1005 char *buf, loff_t size, 1006 enum kernel_read_file_id id) 1007 { 1008 return 0; 1009 } 1010 1011 static inline int security_task_fix_setuid(struct cred *new, 1012 const struct cred *old, 1013 int flags) 1014 { 1015 return cap_task_fix_setuid(new, old, flags); 1016 } 1017 1018 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1019 { 1020 return 0; 1021 } 1022 1023 static inline int security_task_getpgid(struct task_struct *p) 1024 { 1025 return 0; 1026 } 1027 1028 static inline int security_task_getsid(struct task_struct *p) 1029 { 1030 return 0; 1031 } 1032 1033 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1034 { 1035 *secid = 0; 1036 } 1037 1038 static inline int security_task_setnice(struct task_struct *p, int nice) 1039 { 1040 return cap_task_setnice(p, nice); 1041 } 1042 1043 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1044 { 1045 return cap_task_setioprio(p, ioprio); 1046 } 1047 1048 static inline int security_task_getioprio(struct task_struct *p) 1049 { 1050 return 0; 1051 } 1052 1053 static inline int security_task_prlimit(const struct cred *cred, 1054 const struct cred *tcred, 1055 unsigned int flags) 1056 { 1057 return 0; 1058 } 1059 1060 static inline int security_task_setrlimit(struct task_struct *p, 1061 unsigned int resource, 1062 struct rlimit *new_rlim) 1063 { 1064 return 0; 1065 } 1066 1067 static inline int security_task_setscheduler(struct task_struct *p) 1068 { 1069 return cap_task_setscheduler(p); 1070 } 1071 1072 static inline int security_task_getscheduler(struct task_struct *p) 1073 { 1074 return 0; 1075 } 1076 1077 static inline int security_task_movememory(struct task_struct *p) 1078 { 1079 return 0; 1080 } 1081 1082 static inline int security_task_kill(struct task_struct *p, 1083 struct kernel_siginfo *info, int sig, 1084 const struct cred *cred) 1085 { 1086 return 0; 1087 } 1088 1089 static inline int security_task_prctl(int option, unsigned long arg2, 1090 unsigned long arg3, 1091 unsigned long arg4, 1092 unsigned long arg5) 1093 { 1094 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1095 } 1096 1097 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1098 { } 1099 1100 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1101 short flag) 1102 { 1103 return 0; 1104 } 1105 1106 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1107 { 1108 *secid = 0; 1109 } 1110 1111 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1112 { 1113 return 0; 1114 } 1115 1116 static inline void security_msg_msg_free(struct msg_msg *msg) 1117 { } 1118 1119 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1120 { 1121 return 0; 1122 } 1123 1124 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1125 { } 1126 1127 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1128 int msqflg) 1129 { 1130 return 0; 1131 } 1132 1133 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1134 { 1135 return 0; 1136 } 1137 1138 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1139 struct msg_msg *msg, int msqflg) 1140 { 1141 return 0; 1142 } 1143 1144 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1145 struct msg_msg *msg, 1146 struct task_struct *target, 1147 long type, int mode) 1148 { 1149 return 0; 1150 } 1151 1152 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1153 { 1154 return 0; 1155 } 1156 1157 static inline void security_shm_free(struct kern_ipc_perm *shp) 1158 { } 1159 1160 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1161 int shmflg) 1162 { 1163 return 0; 1164 } 1165 1166 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1167 { 1168 return 0; 1169 } 1170 1171 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1172 char __user *shmaddr, int shmflg) 1173 { 1174 return 0; 1175 } 1176 1177 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1178 { 1179 return 0; 1180 } 1181 1182 static inline void security_sem_free(struct kern_ipc_perm *sma) 1183 { } 1184 1185 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1186 { 1187 return 0; 1188 } 1189 1190 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1191 { 1192 return 0; 1193 } 1194 1195 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1196 struct sembuf *sops, unsigned nsops, 1197 int alter) 1198 { 1199 return 0; 1200 } 1201 1202 static inline void security_d_instantiate(struct dentry *dentry, 1203 struct inode *inode) 1204 { } 1205 1206 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1207 char *name, char **value) 1208 { 1209 return -EINVAL; 1210 } 1211 1212 static inline int security_setprocattr(const char *lsm, char *name, 1213 void *value, size_t size) 1214 { 1215 return -EINVAL; 1216 } 1217 1218 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1219 { 1220 return 0; 1221 } 1222 1223 static inline int security_ismaclabel(const char *name) 1224 { 1225 return 0; 1226 } 1227 1228 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1229 { 1230 return -EOPNOTSUPP; 1231 } 1232 1233 static inline int security_secctx_to_secid(const char *secdata, 1234 u32 seclen, 1235 u32 *secid) 1236 { 1237 return -EOPNOTSUPP; 1238 } 1239 1240 static inline void security_release_secctx(char *secdata, u32 seclen) 1241 { 1242 } 1243 1244 static inline void security_inode_invalidate_secctx(struct inode *inode) 1245 { 1246 } 1247 1248 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1249 { 1250 return -EOPNOTSUPP; 1251 } 1252 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1253 { 1254 return -EOPNOTSUPP; 1255 } 1256 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1257 { 1258 return -EOPNOTSUPP; 1259 } 1260 static inline int security_locked_down(enum lockdown_reason what) 1261 { 1262 return 0; 1263 } 1264 #endif /* CONFIG_SECURITY */ 1265 1266 #ifdef CONFIG_SECURITY_NETWORK 1267 1268 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1269 int security_unix_may_send(struct socket *sock, struct socket *other); 1270 int security_socket_create(int family, int type, int protocol, int kern); 1271 int security_socket_post_create(struct socket *sock, int family, 1272 int type, int protocol, int kern); 1273 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1274 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1275 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1276 int security_socket_listen(struct socket *sock, int backlog); 1277 int security_socket_accept(struct socket *sock, struct socket *newsock); 1278 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1279 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1280 int size, int flags); 1281 int security_socket_getsockname(struct socket *sock); 1282 int security_socket_getpeername(struct socket *sock); 1283 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1284 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1285 int security_socket_shutdown(struct socket *sock, int how); 1286 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1287 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1288 int __user *optlen, unsigned len); 1289 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1290 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1291 void security_sk_free(struct sock *sk); 1292 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1293 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1294 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1295 void security_sock_graft(struct sock*sk, struct socket *parent); 1296 int security_inet_conn_request(struct sock *sk, 1297 struct sk_buff *skb, struct request_sock *req); 1298 void security_inet_csk_clone(struct sock *newsk, 1299 const struct request_sock *req); 1300 void security_inet_conn_established(struct sock *sk, 1301 struct sk_buff *skb); 1302 int security_secmark_relabel_packet(u32 secid); 1303 void security_secmark_refcount_inc(void); 1304 void security_secmark_refcount_dec(void); 1305 int security_tun_dev_alloc_security(void **security); 1306 void security_tun_dev_free_security(void *security); 1307 int security_tun_dev_create(void); 1308 int security_tun_dev_attach_queue(void *security); 1309 int security_tun_dev_attach(struct sock *sk, void *security); 1310 int security_tun_dev_open(void *security); 1311 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1312 int security_sctp_bind_connect(struct sock *sk, int optname, 1313 struct sockaddr *address, int addrlen); 1314 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1315 struct sock *newsk); 1316 1317 #else /* CONFIG_SECURITY_NETWORK */ 1318 static inline int security_unix_stream_connect(struct sock *sock, 1319 struct sock *other, 1320 struct sock *newsk) 1321 { 1322 return 0; 1323 } 1324 1325 static inline int security_unix_may_send(struct socket *sock, 1326 struct socket *other) 1327 { 1328 return 0; 1329 } 1330 1331 static inline int security_socket_create(int family, int type, 1332 int protocol, int kern) 1333 { 1334 return 0; 1335 } 1336 1337 static inline int security_socket_post_create(struct socket *sock, 1338 int family, 1339 int type, 1340 int protocol, int kern) 1341 { 1342 return 0; 1343 } 1344 1345 static inline int security_socket_socketpair(struct socket *socka, 1346 struct socket *sockb) 1347 { 1348 return 0; 1349 } 1350 1351 static inline int security_socket_bind(struct socket *sock, 1352 struct sockaddr *address, 1353 int addrlen) 1354 { 1355 return 0; 1356 } 1357 1358 static inline int security_socket_connect(struct socket *sock, 1359 struct sockaddr *address, 1360 int addrlen) 1361 { 1362 return 0; 1363 } 1364 1365 static inline int security_socket_listen(struct socket *sock, int backlog) 1366 { 1367 return 0; 1368 } 1369 1370 static inline int security_socket_accept(struct socket *sock, 1371 struct socket *newsock) 1372 { 1373 return 0; 1374 } 1375 1376 static inline int security_socket_sendmsg(struct socket *sock, 1377 struct msghdr *msg, int size) 1378 { 1379 return 0; 1380 } 1381 1382 static inline int security_socket_recvmsg(struct socket *sock, 1383 struct msghdr *msg, int size, 1384 int flags) 1385 { 1386 return 0; 1387 } 1388 1389 static inline int security_socket_getsockname(struct socket *sock) 1390 { 1391 return 0; 1392 } 1393 1394 static inline int security_socket_getpeername(struct socket *sock) 1395 { 1396 return 0; 1397 } 1398 1399 static inline int security_socket_getsockopt(struct socket *sock, 1400 int level, int optname) 1401 { 1402 return 0; 1403 } 1404 1405 static inline int security_socket_setsockopt(struct socket *sock, 1406 int level, int optname) 1407 { 1408 return 0; 1409 } 1410 1411 static inline int security_socket_shutdown(struct socket *sock, int how) 1412 { 1413 return 0; 1414 } 1415 static inline int security_sock_rcv_skb(struct sock *sk, 1416 struct sk_buff *skb) 1417 { 1418 return 0; 1419 } 1420 1421 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1422 int __user *optlen, unsigned len) 1423 { 1424 return -ENOPROTOOPT; 1425 } 1426 1427 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1428 { 1429 return -ENOPROTOOPT; 1430 } 1431 1432 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1433 { 1434 return 0; 1435 } 1436 1437 static inline void security_sk_free(struct sock *sk) 1438 { 1439 } 1440 1441 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1442 { 1443 } 1444 1445 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1446 { 1447 } 1448 1449 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1450 { 1451 } 1452 1453 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1454 { 1455 } 1456 1457 static inline int security_inet_conn_request(struct sock *sk, 1458 struct sk_buff *skb, struct request_sock *req) 1459 { 1460 return 0; 1461 } 1462 1463 static inline void security_inet_csk_clone(struct sock *newsk, 1464 const struct request_sock *req) 1465 { 1466 } 1467 1468 static inline void security_inet_conn_established(struct sock *sk, 1469 struct sk_buff *skb) 1470 { 1471 } 1472 1473 static inline int security_secmark_relabel_packet(u32 secid) 1474 { 1475 return 0; 1476 } 1477 1478 static inline void security_secmark_refcount_inc(void) 1479 { 1480 } 1481 1482 static inline void security_secmark_refcount_dec(void) 1483 { 1484 } 1485 1486 static inline int security_tun_dev_alloc_security(void **security) 1487 { 1488 return 0; 1489 } 1490 1491 static inline void security_tun_dev_free_security(void *security) 1492 { 1493 } 1494 1495 static inline int security_tun_dev_create(void) 1496 { 1497 return 0; 1498 } 1499 1500 static inline int security_tun_dev_attach_queue(void *security) 1501 { 1502 return 0; 1503 } 1504 1505 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1506 { 1507 return 0; 1508 } 1509 1510 static inline int security_tun_dev_open(void *security) 1511 { 1512 return 0; 1513 } 1514 1515 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1516 struct sk_buff *skb) 1517 { 1518 return 0; 1519 } 1520 1521 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1522 struct sockaddr *address, 1523 int addrlen) 1524 { 1525 return 0; 1526 } 1527 1528 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1529 struct sock *sk, 1530 struct sock *newsk) 1531 { 1532 } 1533 #endif /* CONFIG_SECURITY_NETWORK */ 1534 1535 #ifdef CONFIG_SECURITY_INFINIBAND 1536 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1537 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1538 int security_ib_alloc_security(void **sec); 1539 void security_ib_free_security(void *sec); 1540 #else /* CONFIG_SECURITY_INFINIBAND */ 1541 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1542 { 1543 return 0; 1544 } 1545 1546 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1547 { 1548 return 0; 1549 } 1550 1551 static inline int security_ib_alloc_security(void **sec) 1552 { 1553 return 0; 1554 } 1555 1556 static inline void security_ib_free_security(void *sec) 1557 { 1558 } 1559 #endif /* CONFIG_SECURITY_INFINIBAND */ 1560 1561 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1562 1563 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1564 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1565 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1566 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1567 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1568 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1569 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1570 struct xfrm_sec_ctx *polsec, u32 secid); 1571 int security_xfrm_state_delete(struct xfrm_state *x); 1572 void security_xfrm_state_free(struct xfrm_state *x); 1573 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1574 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1575 struct xfrm_policy *xp, 1576 const struct flowi *fl); 1577 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1578 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1579 1580 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1581 1582 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1583 struct xfrm_user_sec_ctx *sec_ctx, 1584 gfp_t gfp) 1585 { 1586 return 0; 1587 } 1588 1589 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1590 { 1591 return 0; 1592 } 1593 1594 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1595 { 1596 } 1597 1598 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1599 { 1600 return 0; 1601 } 1602 1603 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1604 struct xfrm_user_sec_ctx *sec_ctx) 1605 { 1606 return 0; 1607 } 1608 1609 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1610 struct xfrm_sec_ctx *polsec, u32 secid) 1611 { 1612 return 0; 1613 } 1614 1615 static inline void security_xfrm_state_free(struct xfrm_state *x) 1616 { 1617 } 1618 1619 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1620 { 1621 return 0; 1622 } 1623 1624 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1625 { 1626 return 0; 1627 } 1628 1629 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1630 struct xfrm_policy *xp, const struct flowi *fl) 1631 { 1632 return 1; 1633 } 1634 1635 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1636 { 1637 return 0; 1638 } 1639 1640 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1641 { 1642 } 1643 1644 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1645 1646 #ifdef CONFIG_SECURITY_PATH 1647 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1648 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1649 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1650 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1651 unsigned int dev); 1652 int security_path_truncate(const struct path *path); 1653 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1654 const char *old_name); 1655 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1656 struct dentry *new_dentry); 1657 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1658 const struct path *new_dir, struct dentry *new_dentry, 1659 unsigned int flags); 1660 int security_path_chmod(const struct path *path, umode_t mode); 1661 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1662 int security_path_chroot(const struct path *path); 1663 #else /* CONFIG_SECURITY_PATH */ 1664 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1665 { 1666 return 0; 1667 } 1668 1669 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1670 umode_t mode) 1671 { 1672 return 0; 1673 } 1674 1675 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1676 { 1677 return 0; 1678 } 1679 1680 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1681 umode_t mode, unsigned int dev) 1682 { 1683 return 0; 1684 } 1685 1686 static inline int security_path_truncate(const struct path *path) 1687 { 1688 return 0; 1689 } 1690 1691 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1692 const char *old_name) 1693 { 1694 return 0; 1695 } 1696 1697 static inline int security_path_link(struct dentry *old_dentry, 1698 const struct path *new_dir, 1699 struct dentry *new_dentry) 1700 { 1701 return 0; 1702 } 1703 1704 static inline int security_path_rename(const struct path *old_dir, 1705 struct dentry *old_dentry, 1706 const struct path *new_dir, 1707 struct dentry *new_dentry, 1708 unsigned int flags) 1709 { 1710 return 0; 1711 } 1712 1713 static inline int security_path_chmod(const struct path *path, umode_t mode) 1714 { 1715 return 0; 1716 } 1717 1718 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1719 { 1720 return 0; 1721 } 1722 1723 static inline int security_path_chroot(const struct path *path) 1724 { 1725 return 0; 1726 } 1727 #endif /* CONFIG_SECURITY_PATH */ 1728 1729 #ifdef CONFIG_KEYS 1730 #ifdef CONFIG_SECURITY 1731 1732 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1733 void security_key_free(struct key *key); 1734 int security_key_permission(key_ref_t key_ref, 1735 const struct cred *cred, unsigned perm); 1736 int security_key_getsecurity(struct key *key, char **_buffer); 1737 1738 #else 1739 1740 static inline int security_key_alloc(struct key *key, 1741 const struct cred *cred, 1742 unsigned long flags) 1743 { 1744 return 0; 1745 } 1746 1747 static inline void security_key_free(struct key *key) 1748 { 1749 } 1750 1751 static inline int security_key_permission(key_ref_t key_ref, 1752 const struct cred *cred, 1753 unsigned perm) 1754 { 1755 return 0; 1756 } 1757 1758 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1759 { 1760 *_buffer = NULL; 1761 return 0; 1762 } 1763 1764 #endif 1765 #endif /* CONFIG_KEYS */ 1766 1767 #ifdef CONFIG_AUDIT 1768 #ifdef CONFIG_SECURITY 1769 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1770 int security_audit_rule_known(struct audit_krule *krule); 1771 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1772 void security_audit_rule_free(void *lsmrule); 1773 1774 #else 1775 1776 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1777 void **lsmrule) 1778 { 1779 return 0; 1780 } 1781 1782 static inline int security_audit_rule_known(struct audit_krule *krule) 1783 { 1784 return 0; 1785 } 1786 1787 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1788 void *lsmrule) 1789 { 1790 return 0; 1791 } 1792 1793 static inline void security_audit_rule_free(void *lsmrule) 1794 { } 1795 1796 #endif /* CONFIG_SECURITY */ 1797 #endif /* CONFIG_AUDIT */ 1798 1799 #ifdef CONFIG_SECURITYFS 1800 1801 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1802 struct dentry *parent, void *data, 1803 const struct file_operations *fops); 1804 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1805 struct dentry *securityfs_create_symlink(const char *name, 1806 struct dentry *parent, 1807 const char *target, 1808 const struct inode_operations *iops); 1809 extern void securityfs_remove(struct dentry *dentry); 1810 1811 #else /* CONFIG_SECURITYFS */ 1812 1813 static inline struct dentry *securityfs_create_dir(const char *name, 1814 struct dentry *parent) 1815 { 1816 return ERR_PTR(-ENODEV); 1817 } 1818 1819 static inline struct dentry *securityfs_create_file(const char *name, 1820 umode_t mode, 1821 struct dentry *parent, 1822 void *data, 1823 const struct file_operations *fops) 1824 { 1825 return ERR_PTR(-ENODEV); 1826 } 1827 1828 static inline struct dentry *securityfs_create_symlink(const char *name, 1829 struct dentry *parent, 1830 const char *target, 1831 const struct inode_operations *iops) 1832 { 1833 return ERR_PTR(-ENODEV); 1834 } 1835 1836 static inline void securityfs_remove(struct dentry *dentry) 1837 {} 1838 1839 #endif 1840 1841 #ifdef CONFIG_BPF_SYSCALL 1842 union bpf_attr; 1843 struct bpf_map; 1844 struct bpf_prog; 1845 struct bpf_prog_aux; 1846 #ifdef CONFIG_SECURITY 1847 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1848 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1849 extern int security_bpf_prog(struct bpf_prog *prog); 1850 extern int security_bpf_map_alloc(struct bpf_map *map); 1851 extern void security_bpf_map_free(struct bpf_map *map); 1852 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1853 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1854 #else 1855 static inline int security_bpf(int cmd, union bpf_attr *attr, 1856 unsigned int size) 1857 { 1858 return 0; 1859 } 1860 1861 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1862 { 1863 return 0; 1864 } 1865 1866 static inline int security_bpf_prog(struct bpf_prog *prog) 1867 { 1868 return 0; 1869 } 1870 1871 static inline int security_bpf_map_alloc(struct bpf_map *map) 1872 { 1873 return 0; 1874 } 1875 1876 static inline void security_bpf_map_free(struct bpf_map *map) 1877 { } 1878 1879 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1880 { 1881 return 0; 1882 } 1883 1884 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1885 { } 1886 #endif /* CONFIG_SECURITY */ 1887 #endif /* CONFIG_BPF_SYSCALL */ 1888 1889 #endif /* ! __LINUX_SECURITY_H */ 1890 1891