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