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_EFI_TEST, 109 LOCKDOWN_KEXEC, 110 LOCKDOWN_HIBERNATION, 111 LOCKDOWN_PCI_ACCESS, 112 LOCKDOWN_IOPORT, 113 LOCKDOWN_MSR, 114 LOCKDOWN_ACPI_TABLES, 115 LOCKDOWN_PCMCIA_CIS, 116 LOCKDOWN_TIOCSSERIAL, 117 LOCKDOWN_MODULE_PARAMETERS, 118 LOCKDOWN_MMIOTRACE, 119 LOCKDOWN_DEBUGFS, 120 LOCKDOWN_XMON_WR, 121 LOCKDOWN_INTEGRITY_MAX, 122 LOCKDOWN_KCORE, 123 LOCKDOWN_KPROBES, 124 LOCKDOWN_BPF_READ, 125 LOCKDOWN_PERF, 126 LOCKDOWN_TRACEFS, 127 LOCKDOWN_XMON_RW, 128 LOCKDOWN_CONFIDENTIALITY_MAX, 129 }; 130 131 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 132 133 /* These functions are in security/commoncap.c */ 134 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 135 int cap, unsigned int opts); 136 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 137 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 138 extern int cap_ptrace_traceme(struct task_struct *parent); 139 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 140 extern int cap_capset(struct cred *new, const struct cred *old, 141 const kernel_cap_t *effective, 142 const kernel_cap_t *inheritable, 143 const kernel_cap_t *permitted); 144 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 145 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 146 const void *value, size_t size, int flags); 147 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 148 extern int cap_inode_need_killpriv(struct dentry *dentry); 149 extern int cap_inode_killpriv(struct dentry *dentry); 150 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 151 void **buffer, bool alloc); 152 extern int cap_mmap_addr(unsigned long addr); 153 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 154 unsigned long prot, unsigned long flags); 155 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 156 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 157 unsigned long arg4, unsigned long arg5); 158 extern int cap_task_setscheduler(struct task_struct *p); 159 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 160 extern int cap_task_setnice(struct task_struct *p, int nice); 161 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 162 163 struct msghdr; 164 struct sk_buff; 165 struct sock; 166 struct sockaddr; 167 struct socket; 168 struct flowi; 169 struct dst_entry; 170 struct xfrm_selector; 171 struct xfrm_policy; 172 struct xfrm_state; 173 struct xfrm_user_sec_ctx; 174 struct seq_file; 175 struct sctp_endpoint; 176 177 #ifdef CONFIG_MMU 178 extern unsigned long mmap_min_addr; 179 extern unsigned long dac_mmap_min_addr; 180 #else 181 #define mmap_min_addr 0UL 182 #define dac_mmap_min_addr 0UL 183 #endif 184 185 /* 186 * Values used in the task_security_ops calls 187 */ 188 /* setuid or setgid, id0 == uid or gid */ 189 #define LSM_SETID_ID 1 190 191 /* setreuid or setregid, id0 == real, id1 == eff */ 192 #define LSM_SETID_RE 2 193 194 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 195 #define LSM_SETID_RES 4 196 197 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 198 #define LSM_SETID_FS 8 199 200 /* Flags for security_task_prlimit(). */ 201 #define LSM_PRLIMIT_READ 1 202 #define LSM_PRLIMIT_WRITE 2 203 204 /* forward declares to avoid warnings */ 205 struct sched_param; 206 struct request_sock; 207 208 /* bprm->unsafe reasons */ 209 #define LSM_UNSAFE_SHARE 1 210 #define LSM_UNSAFE_PTRACE 2 211 #define LSM_UNSAFE_NO_NEW_PRIVS 4 212 213 #ifdef CONFIG_MMU 214 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 215 void __user *buffer, size_t *lenp, loff_t *ppos); 216 #endif 217 218 /* security_inode_init_security callback function to write xattrs */ 219 typedef int (*initxattrs) (struct inode *inode, 220 const struct xattr *xattr_array, void *fs_data); 221 222 223 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 224 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 225 #define __data_id_stringify(dummy, str) #str, 226 227 enum kernel_load_data_id { 228 __kernel_read_file_id(__data_id_enumify) 229 }; 230 231 static const char * const kernel_load_data_str[] = { 232 __kernel_read_file_id(__data_id_stringify) 233 }; 234 235 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 236 { 237 if ((unsigned)id >= LOADING_MAX_ID) 238 return kernel_load_data_str[LOADING_UNKNOWN]; 239 240 return kernel_load_data_str[id]; 241 } 242 243 #ifdef CONFIG_SECURITY 244 245 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 246 int register_blocking_lsm_notifier(struct notifier_block *nb); 247 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 248 249 /* prototypes */ 250 extern int security_init(void); 251 extern int early_security_init(void); 252 253 /* Security operations */ 254 int security_binder_set_context_mgr(struct task_struct *mgr); 255 int security_binder_transaction(struct task_struct *from, 256 struct task_struct *to); 257 int security_binder_transfer_binder(struct task_struct *from, 258 struct task_struct *to); 259 int security_binder_transfer_file(struct task_struct *from, 260 struct task_struct *to, struct file *file); 261 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 262 int security_ptrace_traceme(struct task_struct *parent); 263 int security_capget(struct task_struct *target, 264 kernel_cap_t *effective, 265 kernel_cap_t *inheritable, 266 kernel_cap_t *permitted); 267 int security_capset(struct cred *new, const struct cred *old, 268 const kernel_cap_t *effective, 269 const kernel_cap_t *inheritable, 270 const kernel_cap_t *permitted); 271 int security_capable(const struct cred *cred, 272 struct user_namespace *ns, 273 int cap, 274 unsigned int opts); 275 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 276 int security_quota_on(struct dentry *dentry); 277 int security_syslog(int type); 278 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 279 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 280 int security_bprm_set_creds(struct linux_binprm *bprm); 281 int security_bprm_check(struct linux_binprm *bprm); 282 void security_bprm_committing_creds(struct linux_binprm *bprm); 283 void security_bprm_committed_creds(struct linux_binprm *bprm); 284 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 285 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 286 int security_sb_alloc(struct super_block *sb); 287 void security_sb_free(struct super_block *sb); 288 void security_free_mnt_opts(void **mnt_opts); 289 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 290 int security_sb_remount(struct super_block *sb, void *mnt_opts); 291 int security_sb_kern_mount(struct super_block *sb); 292 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 293 int security_sb_statfs(struct dentry *dentry); 294 int security_sb_mount(const char *dev_name, const struct path *path, 295 const char *type, unsigned long flags, void *data); 296 int security_sb_umount(struct vfsmount *mnt, int flags); 297 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 298 int security_sb_set_mnt_opts(struct super_block *sb, 299 void *mnt_opts, 300 unsigned long kern_flags, 301 unsigned long *set_kern_flags); 302 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 303 struct super_block *newsb, 304 unsigned long kern_flags, 305 unsigned long *set_kern_flags); 306 int security_add_mnt_opt(const char *option, const char *val, 307 int len, void **mnt_opts); 308 int security_move_mount(const struct path *from_path, const struct path *to_path); 309 int security_dentry_init_security(struct dentry *dentry, int mode, 310 const struct qstr *name, void **ctx, 311 u32 *ctxlen); 312 int security_dentry_create_files_as(struct dentry *dentry, int mode, 313 struct qstr *name, 314 const struct cred *old, 315 struct cred *new); 316 int security_path_notify(const struct path *path, u64 mask, 317 unsigned int obj_type); 318 int security_inode_alloc(struct inode *inode); 319 void security_inode_free(struct inode *inode); 320 int security_inode_init_security(struct inode *inode, struct inode *dir, 321 const struct qstr *qstr, 322 initxattrs initxattrs, void *fs_data); 323 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 324 const struct qstr *qstr, const char **name, 325 void **value, size_t *len); 326 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 327 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 328 struct dentry *new_dentry); 329 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 330 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 331 const char *old_name); 332 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 333 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 334 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 335 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 336 struct inode *new_dir, struct dentry *new_dentry, 337 unsigned int flags); 338 int security_inode_readlink(struct dentry *dentry); 339 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 340 bool rcu); 341 int security_inode_permission(struct inode *inode, int mask); 342 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 343 int security_inode_getattr(const struct path *path); 344 int security_inode_setxattr(struct dentry *dentry, const char *name, 345 const void *value, size_t size, int flags); 346 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 347 const void *value, size_t size, int flags); 348 int security_inode_getxattr(struct dentry *dentry, const char *name); 349 int security_inode_listxattr(struct dentry *dentry); 350 int security_inode_removexattr(struct dentry *dentry, const char *name); 351 int security_inode_need_killpriv(struct dentry *dentry); 352 int security_inode_killpriv(struct dentry *dentry); 353 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 354 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 355 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 356 void security_inode_getsecid(struct inode *inode, u32 *secid); 357 int security_inode_copy_up(struct dentry *src, struct cred **new); 358 int security_inode_copy_up_xattr(const char *name); 359 int security_kernfs_init_security(struct kernfs_node *kn_dir, 360 struct kernfs_node *kn); 361 int security_file_permission(struct file *file, int mask); 362 int security_file_alloc(struct file *file); 363 void security_file_free(struct file *file); 364 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 365 int security_mmap_file(struct file *file, unsigned long prot, 366 unsigned long flags); 367 int security_mmap_addr(unsigned long addr); 368 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 369 unsigned long prot); 370 int security_file_lock(struct file *file, unsigned int cmd); 371 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 372 void security_file_set_fowner(struct file *file); 373 int security_file_send_sigiotask(struct task_struct *tsk, 374 struct fown_struct *fown, int sig); 375 int security_file_receive(struct file *file); 376 int security_file_open(struct file *file); 377 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 378 void security_task_free(struct task_struct *task); 379 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 380 void security_cred_free(struct cred *cred); 381 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 382 void security_transfer_creds(struct cred *new, const struct cred *old); 383 void security_cred_getsecid(const struct cred *c, u32 *secid); 384 int security_kernel_act_as(struct cred *new, u32 secid); 385 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 386 int security_kernel_module_request(char *kmod_name); 387 int security_kernel_load_data(enum kernel_load_data_id id); 388 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 389 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 390 enum kernel_read_file_id id); 391 int security_task_fix_setuid(struct cred *new, const struct cred *old, 392 int flags); 393 int security_task_setpgid(struct task_struct *p, pid_t pgid); 394 int security_task_getpgid(struct task_struct *p); 395 int security_task_getsid(struct task_struct *p); 396 void security_task_getsecid(struct task_struct *p, u32 *secid); 397 int security_task_setnice(struct task_struct *p, int nice); 398 int security_task_setioprio(struct task_struct *p, int ioprio); 399 int security_task_getioprio(struct task_struct *p); 400 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 401 unsigned int flags); 402 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 403 struct rlimit *new_rlim); 404 int security_task_setscheduler(struct task_struct *p); 405 int security_task_getscheduler(struct task_struct *p); 406 int security_task_movememory(struct task_struct *p); 407 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 408 int sig, const struct cred *cred); 409 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 410 unsigned long arg4, unsigned long arg5); 411 void security_task_to_inode(struct task_struct *p, struct inode *inode); 412 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 413 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 414 int security_msg_msg_alloc(struct msg_msg *msg); 415 void security_msg_msg_free(struct msg_msg *msg); 416 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 417 void security_msg_queue_free(struct kern_ipc_perm *msq); 418 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 419 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 420 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 421 struct msg_msg *msg, int msqflg); 422 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 423 struct task_struct *target, long type, int mode); 424 int security_shm_alloc(struct kern_ipc_perm *shp); 425 void security_shm_free(struct kern_ipc_perm *shp); 426 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 427 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 428 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 429 int security_sem_alloc(struct kern_ipc_perm *sma); 430 void security_sem_free(struct kern_ipc_perm *sma); 431 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 432 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 433 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 434 unsigned nsops, int alter); 435 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 436 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 437 char **value); 438 int security_setprocattr(const char *lsm, const char *name, void *value, 439 size_t size); 440 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 441 int security_ismaclabel(const char *name); 442 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 443 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 444 void security_release_secctx(char *secdata, u32 seclen); 445 void security_inode_invalidate_secctx(struct inode *inode); 446 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 447 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 448 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 449 int security_locked_down(enum lockdown_reason what); 450 #else /* CONFIG_SECURITY */ 451 452 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 453 { 454 return 0; 455 } 456 457 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 458 { 459 return 0; 460 } 461 462 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 463 { 464 return 0; 465 } 466 467 static inline void security_free_mnt_opts(void **mnt_opts) 468 { 469 } 470 471 /* 472 * This is the default capabilities functionality. Most of these functions 473 * are just stubbed out, but a few must call the proper capable code. 474 */ 475 476 static inline int security_init(void) 477 { 478 return 0; 479 } 480 481 static inline int early_security_init(void) 482 { 483 return 0; 484 } 485 486 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 487 { 488 return 0; 489 } 490 491 static inline int security_binder_transaction(struct task_struct *from, 492 struct task_struct *to) 493 { 494 return 0; 495 } 496 497 static inline int security_binder_transfer_binder(struct task_struct *from, 498 struct task_struct *to) 499 { 500 return 0; 501 } 502 503 static inline int security_binder_transfer_file(struct task_struct *from, 504 struct task_struct *to, 505 struct file *file) 506 { 507 return 0; 508 } 509 510 static inline int security_ptrace_access_check(struct task_struct *child, 511 unsigned int mode) 512 { 513 return cap_ptrace_access_check(child, mode); 514 } 515 516 static inline int security_ptrace_traceme(struct task_struct *parent) 517 { 518 return cap_ptrace_traceme(parent); 519 } 520 521 static inline int security_capget(struct task_struct *target, 522 kernel_cap_t *effective, 523 kernel_cap_t *inheritable, 524 kernel_cap_t *permitted) 525 { 526 return cap_capget(target, effective, inheritable, permitted); 527 } 528 529 static inline int security_capset(struct cred *new, 530 const struct cred *old, 531 const kernel_cap_t *effective, 532 const kernel_cap_t *inheritable, 533 const kernel_cap_t *permitted) 534 { 535 return cap_capset(new, old, effective, inheritable, permitted); 536 } 537 538 static inline int security_capable(const struct cred *cred, 539 struct user_namespace *ns, 540 int cap, 541 unsigned int opts) 542 { 543 return cap_capable(cred, ns, cap, opts); 544 } 545 546 static inline int security_quotactl(int cmds, int type, int id, 547 struct super_block *sb) 548 { 549 return 0; 550 } 551 552 static inline int security_quota_on(struct dentry *dentry) 553 { 554 return 0; 555 } 556 557 static inline int security_syslog(int type) 558 { 559 return 0; 560 } 561 562 static inline int security_settime64(const struct timespec64 *ts, 563 const struct timezone *tz) 564 { 565 return cap_settime(ts, tz); 566 } 567 568 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 569 { 570 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 571 } 572 573 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 574 { 575 return cap_bprm_set_creds(bprm); 576 } 577 578 static inline int security_bprm_check(struct linux_binprm *bprm) 579 { 580 return 0; 581 } 582 583 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 584 { 585 } 586 587 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 588 { 589 } 590 591 static inline int security_fs_context_dup(struct fs_context *fc, 592 struct fs_context *src_fc) 593 { 594 return 0; 595 } 596 static inline int security_fs_context_parse_param(struct fs_context *fc, 597 struct fs_parameter *param) 598 { 599 return -ENOPARAM; 600 } 601 602 static inline int security_sb_alloc(struct super_block *sb) 603 { 604 return 0; 605 } 606 607 static inline void security_sb_free(struct super_block *sb) 608 { } 609 610 static inline int security_sb_eat_lsm_opts(char *options, 611 void **mnt_opts) 612 { 613 return 0; 614 } 615 616 static inline int security_sb_remount(struct super_block *sb, 617 void *mnt_opts) 618 { 619 return 0; 620 } 621 622 static inline int security_sb_kern_mount(struct super_block *sb) 623 { 624 return 0; 625 } 626 627 static inline int security_sb_show_options(struct seq_file *m, 628 struct super_block *sb) 629 { 630 return 0; 631 } 632 633 static inline int security_sb_statfs(struct dentry *dentry) 634 { 635 return 0; 636 } 637 638 static inline int security_sb_mount(const char *dev_name, const struct path *path, 639 const char *type, unsigned long flags, 640 void *data) 641 { 642 return 0; 643 } 644 645 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 646 { 647 return 0; 648 } 649 650 static inline int security_sb_pivotroot(const struct path *old_path, 651 const struct path *new_path) 652 { 653 return 0; 654 } 655 656 static inline int security_sb_set_mnt_opts(struct super_block *sb, 657 void *mnt_opts, 658 unsigned long kern_flags, 659 unsigned long *set_kern_flags) 660 { 661 return 0; 662 } 663 664 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 665 struct super_block *newsb, 666 unsigned long kern_flags, 667 unsigned long *set_kern_flags) 668 { 669 return 0; 670 } 671 672 static inline int security_add_mnt_opt(const char *option, const char *val, 673 int len, void **mnt_opts) 674 { 675 return 0; 676 } 677 678 static inline int security_move_mount(const struct path *from_path, 679 const struct path *to_path) 680 { 681 return 0; 682 } 683 684 static inline int security_path_notify(const struct path *path, u64 mask, 685 unsigned int obj_type) 686 { 687 return 0; 688 } 689 690 static inline int security_inode_alloc(struct inode *inode) 691 { 692 return 0; 693 } 694 695 static inline void security_inode_free(struct inode *inode) 696 { } 697 698 static inline int security_dentry_init_security(struct dentry *dentry, 699 int mode, 700 const struct qstr *name, 701 void **ctx, 702 u32 *ctxlen) 703 { 704 return -EOPNOTSUPP; 705 } 706 707 static inline int security_dentry_create_files_as(struct dentry *dentry, 708 int mode, struct qstr *name, 709 const struct cred *old, 710 struct cred *new) 711 { 712 return 0; 713 } 714 715 716 static inline int security_inode_init_security(struct inode *inode, 717 struct inode *dir, 718 const struct qstr *qstr, 719 const initxattrs xattrs, 720 void *fs_data) 721 { 722 return 0; 723 } 724 725 static inline int security_old_inode_init_security(struct inode *inode, 726 struct inode *dir, 727 const struct qstr *qstr, 728 const char **name, 729 void **value, size_t *len) 730 { 731 return -EOPNOTSUPP; 732 } 733 734 static inline int security_inode_create(struct inode *dir, 735 struct dentry *dentry, 736 umode_t mode) 737 { 738 return 0; 739 } 740 741 static inline int security_inode_link(struct dentry *old_dentry, 742 struct inode *dir, 743 struct dentry *new_dentry) 744 { 745 return 0; 746 } 747 748 static inline int security_inode_unlink(struct inode *dir, 749 struct dentry *dentry) 750 { 751 return 0; 752 } 753 754 static inline int security_inode_symlink(struct inode *dir, 755 struct dentry *dentry, 756 const char *old_name) 757 { 758 return 0; 759 } 760 761 static inline int security_inode_mkdir(struct inode *dir, 762 struct dentry *dentry, 763 int mode) 764 { 765 return 0; 766 } 767 768 static inline int security_inode_rmdir(struct inode *dir, 769 struct dentry *dentry) 770 { 771 return 0; 772 } 773 774 static inline int security_inode_mknod(struct inode *dir, 775 struct dentry *dentry, 776 int mode, dev_t dev) 777 { 778 return 0; 779 } 780 781 static inline int security_inode_rename(struct inode *old_dir, 782 struct dentry *old_dentry, 783 struct inode *new_dir, 784 struct dentry *new_dentry, 785 unsigned int flags) 786 { 787 return 0; 788 } 789 790 static inline int security_inode_readlink(struct dentry *dentry) 791 { 792 return 0; 793 } 794 795 static inline int security_inode_follow_link(struct dentry *dentry, 796 struct inode *inode, 797 bool rcu) 798 { 799 return 0; 800 } 801 802 static inline int security_inode_permission(struct inode *inode, int mask) 803 { 804 return 0; 805 } 806 807 static inline int security_inode_setattr(struct dentry *dentry, 808 struct iattr *attr) 809 { 810 return 0; 811 } 812 813 static inline int security_inode_getattr(const struct path *path) 814 { 815 return 0; 816 } 817 818 static inline int security_inode_setxattr(struct dentry *dentry, 819 const char *name, const void *value, size_t size, int flags) 820 { 821 return cap_inode_setxattr(dentry, name, value, size, flags); 822 } 823 824 static inline void security_inode_post_setxattr(struct dentry *dentry, 825 const char *name, const void *value, size_t size, int flags) 826 { } 827 828 static inline int security_inode_getxattr(struct dentry *dentry, 829 const char *name) 830 { 831 return 0; 832 } 833 834 static inline int security_inode_listxattr(struct dentry *dentry) 835 { 836 return 0; 837 } 838 839 static inline int security_inode_removexattr(struct dentry *dentry, 840 const char *name) 841 { 842 return cap_inode_removexattr(dentry, name); 843 } 844 845 static inline int security_inode_need_killpriv(struct dentry *dentry) 846 { 847 return cap_inode_need_killpriv(dentry); 848 } 849 850 static inline int security_inode_killpriv(struct dentry *dentry) 851 { 852 return cap_inode_killpriv(dentry); 853 } 854 855 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 856 { 857 return -EOPNOTSUPP; 858 } 859 860 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 861 { 862 return -EOPNOTSUPP; 863 } 864 865 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 866 { 867 return 0; 868 } 869 870 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 871 { 872 *secid = 0; 873 } 874 875 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 876 { 877 return 0; 878 } 879 880 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 881 struct kernfs_node *kn) 882 { 883 return 0; 884 } 885 886 static inline int security_inode_copy_up_xattr(const char *name) 887 { 888 return -EOPNOTSUPP; 889 } 890 891 static inline int security_file_permission(struct file *file, int mask) 892 { 893 return 0; 894 } 895 896 static inline int security_file_alloc(struct file *file) 897 { 898 return 0; 899 } 900 901 static inline void security_file_free(struct file *file) 902 { } 903 904 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 905 unsigned long arg) 906 { 907 return 0; 908 } 909 910 static inline int security_mmap_file(struct file *file, unsigned long prot, 911 unsigned long flags) 912 { 913 return 0; 914 } 915 916 static inline int security_mmap_addr(unsigned long addr) 917 { 918 return cap_mmap_addr(addr); 919 } 920 921 static inline int security_file_mprotect(struct vm_area_struct *vma, 922 unsigned long reqprot, 923 unsigned long prot) 924 { 925 return 0; 926 } 927 928 static inline int security_file_lock(struct file *file, unsigned int cmd) 929 { 930 return 0; 931 } 932 933 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 934 unsigned long arg) 935 { 936 return 0; 937 } 938 939 static inline void security_file_set_fowner(struct file *file) 940 { 941 return; 942 } 943 944 static inline int security_file_send_sigiotask(struct task_struct *tsk, 945 struct fown_struct *fown, 946 int sig) 947 { 948 return 0; 949 } 950 951 static inline int security_file_receive(struct file *file) 952 { 953 return 0; 954 } 955 956 static inline int security_file_open(struct file *file) 957 { 958 return 0; 959 } 960 961 static inline int security_task_alloc(struct task_struct *task, 962 unsigned long clone_flags) 963 { 964 return 0; 965 } 966 967 static inline void security_task_free(struct task_struct *task) 968 { } 969 970 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 971 { 972 return 0; 973 } 974 975 static inline void security_cred_free(struct cred *cred) 976 { } 977 978 static inline int security_prepare_creds(struct cred *new, 979 const struct cred *old, 980 gfp_t gfp) 981 { 982 return 0; 983 } 984 985 static inline void security_transfer_creds(struct cred *new, 986 const struct cred *old) 987 { 988 } 989 990 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 991 { 992 return 0; 993 } 994 995 static inline int security_kernel_create_files_as(struct cred *cred, 996 struct inode *inode) 997 { 998 return 0; 999 } 1000 1001 static inline int security_kernel_module_request(char *kmod_name) 1002 { 1003 return 0; 1004 } 1005 1006 static inline int security_kernel_load_data(enum kernel_load_data_id id) 1007 { 1008 return 0; 1009 } 1010 1011 static inline int security_kernel_read_file(struct file *file, 1012 enum kernel_read_file_id id) 1013 { 1014 return 0; 1015 } 1016 1017 static inline int security_kernel_post_read_file(struct file *file, 1018 char *buf, loff_t size, 1019 enum kernel_read_file_id id) 1020 { 1021 return 0; 1022 } 1023 1024 static inline int security_task_fix_setuid(struct cred *new, 1025 const struct cred *old, 1026 int flags) 1027 { 1028 return cap_task_fix_setuid(new, old, flags); 1029 } 1030 1031 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1032 { 1033 return 0; 1034 } 1035 1036 static inline int security_task_getpgid(struct task_struct *p) 1037 { 1038 return 0; 1039 } 1040 1041 static inline int security_task_getsid(struct task_struct *p) 1042 { 1043 return 0; 1044 } 1045 1046 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1047 { 1048 *secid = 0; 1049 } 1050 1051 static inline int security_task_setnice(struct task_struct *p, int nice) 1052 { 1053 return cap_task_setnice(p, nice); 1054 } 1055 1056 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1057 { 1058 return cap_task_setioprio(p, ioprio); 1059 } 1060 1061 static inline int security_task_getioprio(struct task_struct *p) 1062 { 1063 return 0; 1064 } 1065 1066 static inline int security_task_prlimit(const struct cred *cred, 1067 const struct cred *tcred, 1068 unsigned int flags) 1069 { 1070 return 0; 1071 } 1072 1073 static inline int security_task_setrlimit(struct task_struct *p, 1074 unsigned int resource, 1075 struct rlimit *new_rlim) 1076 { 1077 return 0; 1078 } 1079 1080 static inline int security_task_setscheduler(struct task_struct *p) 1081 { 1082 return cap_task_setscheduler(p); 1083 } 1084 1085 static inline int security_task_getscheduler(struct task_struct *p) 1086 { 1087 return 0; 1088 } 1089 1090 static inline int security_task_movememory(struct task_struct *p) 1091 { 1092 return 0; 1093 } 1094 1095 static inline int security_task_kill(struct task_struct *p, 1096 struct kernel_siginfo *info, int sig, 1097 const struct cred *cred) 1098 { 1099 return 0; 1100 } 1101 1102 static inline int security_task_prctl(int option, unsigned long arg2, 1103 unsigned long arg3, 1104 unsigned long arg4, 1105 unsigned long arg5) 1106 { 1107 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1108 } 1109 1110 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1111 { } 1112 1113 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1114 short flag) 1115 { 1116 return 0; 1117 } 1118 1119 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1120 { 1121 *secid = 0; 1122 } 1123 1124 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1125 { 1126 return 0; 1127 } 1128 1129 static inline void security_msg_msg_free(struct msg_msg *msg) 1130 { } 1131 1132 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1133 { 1134 return 0; 1135 } 1136 1137 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1138 { } 1139 1140 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1141 int msqflg) 1142 { 1143 return 0; 1144 } 1145 1146 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1147 { 1148 return 0; 1149 } 1150 1151 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1152 struct msg_msg *msg, int msqflg) 1153 { 1154 return 0; 1155 } 1156 1157 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1158 struct msg_msg *msg, 1159 struct task_struct *target, 1160 long type, int mode) 1161 { 1162 return 0; 1163 } 1164 1165 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1166 { 1167 return 0; 1168 } 1169 1170 static inline void security_shm_free(struct kern_ipc_perm *shp) 1171 { } 1172 1173 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1174 int shmflg) 1175 { 1176 return 0; 1177 } 1178 1179 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1180 { 1181 return 0; 1182 } 1183 1184 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1185 char __user *shmaddr, int shmflg) 1186 { 1187 return 0; 1188 } 1189 1190 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1191 { 1192 return 0; 1193 } 1194 1195 static inline void security_sem_free(struct kern_ipc_perm *sma) 1196 { } 1197 1198 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1199 { 1200 return 0; 1201 } 1202 1203 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1204 { 1205 return 0; 1206 } 1207 1208 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1209 struct sembuf *sops, unsigned nsops, 1210 int alter) 1211 { 1212 return 0; 1213 } 1214 1215 static inline void security_d_instantiate(struct dentry *dentry, 1216 struct inode *inode) 1217 { } 1218 1219 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1220 char *name, char **value) 1221 { 1222 return -EINVAL; 1223 } 1224 1225 static inline int security_setprocattr(const char *lsm, char *name, 1226 void *value, size_t size) 1227 { 1228 return -EINVAL; 1229 } 1230 1231 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1232 { 1233 return 0; 1234 } 1235 1236 static inline int security_ismaclabel(const char *name) 1237 { 1238 return 0; 1239 } 1240 1241 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1242 { 1243 return -EOPNOTSUPP; 1244 } 1245 1246 static inline int security_secctx_to_secid(const char *secdata, 1247 u32 seclen, 1248 u32 *secid) 1249 { 1250 return -EOPNOTSUPP; 1251 } 1252 1253 static inline void security_release_secctx(char *secdata, u32 seclen) 1254 { 1255 } 1256 1257 static inline void security_inode_invalidate_secctx(struct inode *inode) 1258 { 1259 } 1260 1261 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1262 { 1263 return -EOPNOTSUPP; 1264 } 1265 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1266 { 1267 return -EOPNOTSUPP; 1268 } 1269 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1270 { 1271 return -EOPNOTSUPP; 1272 } 1273 static inline int security_locked_down(enum lockdown_reason what) 1274 { 1275 return 0; 1276 } 1277 #endif /* CONFIG_SECURITY */ 1278 1279 #ifdef CONFIG_SECURITY_NETWORK 1280 1281 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1282 int security_unix_may_send(struct socket *sock, struct socket *other); 1283 int security_socket_create(int family, int type, int protocol, int kern); 1284 int security_socket_post_create(struct socket *sock, int family, 1285 int type, int protocol, int kern); 1286 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1287 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1288 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1289 int security_socket_listen(struct socket *sock, int backlog); 1290 int security_socket_accept(struct socket *sock, struct socket *newsock); 1291 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1292 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1293 int size, int flags); 1294 int security_socket_getsockname(struct socket *sock); 1295 int security_socket_getpeername(struct socket *sock); 1296 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1297 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1298 int security_socket_shutdown(struct socket *sock, int how); 1299 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1300 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1301 int __user *optlen, unsigned len); 1302 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1303 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1304 void security_sk_free(struct sock *sk); 1305 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1306 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1307 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1308 void security_sock_graft(struct sock*sk, struct socket *parent); 1309 int security_inet_conn_request(struct sock *sk, 1310 struct sk_buff *skb, struct request_sock *req); 1311 void security_inet_csk_clone(struct sock *newsk, 1312 const struct request_sock *req); 1313 void security_inet_conn_established(struct sock *sk, 1314 struct sk_buff *skb); 1315 int security_secmark_relabel_packet(u32 secid); 1316 void security_secmark_refcount_inc(void); 1317 void security_secmark_refcount_dec(void); 1318 int security_tun_dev_alloc_security(void **security); 1319 void security_tun_dev_free_security(void *security); 1320 int security_tun_dev_create(void); 1321 int security_tun_dev_attach_queue(void *security); 1322 int security_tun_dev_attach(struct sock *sk, void *security); 1323 int security_tun_dev_open(void *security); 1324 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1325 int security_sctp_bind_connect(struct sock *sk, int optname, 1326 struct sockaddr *address, int addrlen); 1327 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1328 struct sock *newsk); 1329 1330 #else /* CONFIG_SECURITY_NETWORK */ 1331 static inline int security_unix_stream_connect(struct sock *sock, 1332 struct sock *other, 1333 struct sock *newsk) 1334 { 1335 return 0; 1336 } 1337 1338 static inline int security_unix_may_send(struct socket *sock, 1339 struct socket *other) 1340 { 1341 return 0; 1342 } 1343 1344 static inline int security_socket_create(int family, int type, 1345 int protocol, int kern) 1346 { 1347 return 0; 1348 } 1349 1350 static inline int security_socket_post_create(struct socket *sock, 1351 int family, 1352 int type, 1353 int protocol, int kern) 1354 { 1355 return 0; 1356 } 1357 1358 static inline int security_socket_socketpair(struct socket *socka, 1359 struct socket *sockb) 1360 { 1361 return 0; 1362 } 1363 1364 static inline int security_socket_bind(struct socket *sock, 1365 struct sockaddr *address, 1366 int addrlen) 1367 { 1368 return 0; 1369 } 1370 1371 static inline int security_socket_connect(struct socket *sock, 1372 struct sockaddr *address, 1373 int addrlen) 1374 { 1375 return 0; 1376 } 1377 1378 static inline int security_socket_listen(struct socket *sock, int backlog) 1379 { 1380 return 0; 1381 } 1382 1383 static inline int security_socket_accept(struct socket *sock, 1384 struct socket *newsock) 1385 { 1386 return 0; 1387 } 1388 1389 static inline int security_socket_sendmsg(struct socket *sock, 1390 struct msghdr *msg, int size) 1391 { 1392 return 0; 1393 } 1394 1395 static inline int security_socket_recvmsg(struct socket *sock, 1396 struct msghdr *msg, int size, 1397 int flags) 1398 { 1399 return 0; 1400 } 1401 1402 static inline int security_socket_getsockname(struct socket *sock) 1403 { 1404 return 0; 1405 } 1406 1407 static inline int security_socket_getpeername(struct socket *sock) 1408 { 1409 return 0; 1410 } 1411 1412 static inline int security_socket_getsockopt(struct socket *sock, 1413 int level, int optname) 1414 { 1415 return 0; 1416 } 1417 1418 static inline int security_socket_setsockopt(struct socket *sock, 1419 int level, int optname) 1420 { 1421 return 0; 1422 } 1423 1424 static inline int security_socket_shutdown(struct socket *sock, int how) 1425 { 1426 return 0; 1427 } 1428 static inline int security_sock_rcv_skb(struct sock *sk, 1429 struct sk_buff *skb) 1430 { 1431 return 0; 1432 } 1433 1434 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1435 int __user *optlen, unsigned len) 1436 { 1437 return -ENOPROTOOPT; 1438 } 1439 1440 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1441 { 1442 return -ENOPROTOOPT; 1443 } 1444 1445 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1446 { 1447 return 0; 1448 } 1449 1450 static inline void security_sk_free(struct sock *sk) 1451 { 1452 } 1453 1454 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1455 { 1456 } 1457 1458 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1459 { 1460 } 1461 1462 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1463 { 1464 } 1465 1466 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1467 { 1468 } 1469 1470 static inline int security_inet_conn_request(struct sock *sk, 1471 struct sk_buff *skb, struct request_sock *req) 1472 { 1473 return 0; 1474 } 1475 1476 static inline void security_inet_csk_clone(struct sock *newsk, 1477 const struct request_sock *req) 1478 { 1479 } 1480 1481 static inline void security_inet_conn_established(struct sock *sk, 1482 struct sk_buff *skb) 1483 { 1484 } 1485 1486 static inline int security_secmark_relabel_packet(u32 secid) 1487 { 1488 return 0; 1489 } 1490 1491 static inline void security_secmark_refcount_inc(void) 1492 { 1493 } 1494 1495 static inline void security_secmark_refcount_dec(void) 1496 { 1497 } 1498 1499 static inline int security_tun_dev_alloc_security(void **security) 1500 { 1501 return 0; 1502 } 1503 1504 static inline void security_tun_dev_free_security(void *security) 1505 { 1506 } 1507 1508 static inline int security_tun_dev_create(void) 1509 { 1510 return 0; 1511 } 1512 1513 static inline int security_tun_dev_attach_queue(void *security) 1514 { 1515 return 0; 1516 } 1517 1518 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1519 { 1520 return 0; 1521 } 1522 1523 static inline int security_tun_dev_open(void *security) 1524 { 1525 return 0; 1526 } 1527 1528 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1529 struct sk_buff *skb) 1530 { 1531 return 0; 1532 } 1533 1534 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1535 struct sockaddr *address, 1536 int addrlen) 1537 { 1538 return 0; 1539 } 1540 1541 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1542 struct sock *sk, 1543 struct sock *newsk) 1544 { 1545 } 1546 #endif /* CONFIG_SECURITY_NETWORK */ 1547 1548 #ifdef CONFIG_SECURITY_INFINIBAND 1549 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1550 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1551 int security_ib_alloc_security(void **sec); 1552 void security_ib_free_security(void *sec); 1553 #else /* CONFIG_SECURITY_INFINIBAND */ 1554 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1555 { 1556 return 0; 1557 } 1558 1559 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1560 { 1561 return 0; 1562 } 1563 1564 static inline int security_ib_alloc_security(void **sec) 1565 { 1566 return 0; 1567 } 1568 1569 static inline void security_ib_free_security(void *sec) 1570 { 1571 } 1572 #endif /* CONFIG_SECURITY_INFINIBAND */ 1573 1574 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1575 1576 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1577 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1578 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1579 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1580 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1581 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1582 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1583 struct xfrm_sec_ctx *polsec, u32 secid); 1584 int security_xfrm_state_delete(struct xfrm_state *x); 1585 void security_xfrm_state_free(struct xfrm_state *x); 1586 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1587 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1588 struct xfrm_policy *xp, 1589 const struct flowi *fl); 1590 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1591 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1592 1593 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1594 1595 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1596 struct xfrm_user_sec_ctx *sec_ctx, 1597 gfp_t gfp) 1598 { 1599 return 0; 1600 } 1601 1602 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1603 { 1604 return 0; 1605 } 1606 1607 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1608 { 1609 } 1610 1611 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1612 { 1613 return 0; 1614 } 1615 1616 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1617 struct xfrm_user_sec_ctx *sec_ctx) 1618 { 1619 return 0; 1620 } 1621 1622 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1623 struct xfrm_sec_ctx *polsec, u32 secid) 1624 { 1625 return 0; 1626 } 1627 1628 static inline void security_xfrm_state_free(struct xfrm_state *x) 1629 { 1630 } 1631 1632 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1633 { 1634 return 0; 1635 } 1636 1637 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1638 { 1639 return 0; 1640 } 1641 1642 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1643 struct xfrm_policy *xp, const struct flowi *fl) 1644 { 1645 return 1; 1646 } 1647 1648 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1649 { 1650 return 0; 1651 } 1652 1653 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1654 { 1655 } 1656 1657 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1658 1659 #ifdef CONFIG_SECURITY_PATH 1660 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1661 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1662 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1663 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1664 unsigned int dev); 1665 int security_path_truncate(const struct path *path); 1666 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1667 const char *old_name); 1668 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1669 struct dentry *new_dentry); 1670 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1671 const struct path *new_dir, struct dentry *new_dentry, 1672 unsigned int flags); 1673 int security_path_chmod(const struct path *path, umode_t mode); 1674 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1675 int security_path_chroot(const struct path *path); 1676 #else /* CONFIG_SECURITY_PATH */ 1677 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1678 { 1679 return 0; 1680 } 1681 1682 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1683 umode_t mode) 1684 { 1685 return 0; 1686 } 1687 1688 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1689 { 1690 return 0; 1691 } 1692 1693 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1694 umode_t mode, unsigned int dev) 1695 { 1696 return 0; 1697 } 1698 1699 static inline int security_path_truncate(const struct path *path) 1700 { 1701 return 0; 1702 } 1703 1704 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1705 const char *old_name) 1706 { 1707 return 0; 1708 } 1709 1710 static inline int security_path_link(struct dentry *old_dentry, 1711 const struct path *new_dir, 1712 struct dentry *new_dentry) 1713 { 1714 return 0; 1715 } 1716 1717 static inline int security_path_rename(const struct path *old_dir, 1718 struct dentry *old_dentry, 1719 const struct path *new_dir, 1720 struct dentry *new_dentry, 1721 unsigned int flags) 1722 { 1723 return 0; 1724 } 1725 1726 static inline int security_path_chmod(const struct path *path, umode_t mode) 1727 { 1728 return 0; 1729 } 1730 1731 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1732 { 1733 return 0; 1734 } 1735 1736 static inline int security_path_chroot(const struct path *path) 1737 { 1738 return 0; 1739 } 1740 #endif /* CONFIG_SECURITY_PATH */ 1741 1742 #ifdef CONFIG_KEYS 1743 #ifdef CONFIG_SECURITY 1744 1745 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1746 void security_key_free(struct key *key); 1747 int security_key_permission(key_ref_t key_ref, 1748 const struct cred *cred, unsigned perm); 1749 int security_key_getsecurity(struct key *key, char **_buffer); 1750 1751 #else 1752 1753 static inline int security_key_alloc(struct key *key, 1754 const struct cred *cred, 1755 unsigned long flags) 1756 { 1757 return 0; 1758 } 1759 1760 static inline void security_key_free(struct key *key) 1761 { 1762 } 1763 1764 static inline int security_key_permission(key_ref_t key_ref, 1765 const struct cred *cred, 1766 unsigned perm) 1767 { 1768 return 0; 1769 } 1770 1771 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1772 { 1773 *_buffer = NULL; 1774 return 0; 1775 } 1776 1777 #endif 1778 #endif /* CONFIG_KEYS */ 1779 1780 #ifdef CONFIG_AUDIT 1781 #ifdef CONFIG_SECURITY 1782 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1783 int security_audit_rule_known(struct audit_krule *krule); 1784 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1785 void security_audit_rule_free(void *lsmrule); 1786 1787 #else 1788 1789 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1790 void **lsmrule) 1791 { 1792 return 0; 1793 } 1794 1795 static inline int security_audit_rule_known(struct audit_krule *krule) 1796 { 1797 return 0; 1798 } 1799 1800 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1801 void *lsmrule) 1802 { 1803 return 0; 1804 } 1805 1806 static inline void security_audit_rule_free(void *lsmrule) 1807 { } 1808 1809 #endif /* CONFIG_SECURITY */ 1810 #endif /* CONFIG_AUDIT */ 1811 1812 #ifdef CONFIG_SECURITYFS 1813 1814 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1815 struct dentry *parent, void *data, 1816 const struct file_operations *fops); 1817 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1818 struct dentry *securityfs_create_symlink(const char *name, 1819 struct dentry *parent, 1820 const char *target, 1821 const struct inode_operations *iops); 1822 extern void securityfs_remove(struct dentry *dentry); 1823 1824 #else /* CONFIG_SECURITYFS */ 1825 1826 static inline struct dentry *securityfs_create_dir(const char *name, 1827 struct dentry *parent) 1828 { 1829 return ERR_PTR(-ENODEV); 1830 } 1831 1832 static inline struct dentry *securityfs_create_file(const char *name, 1833 umode_t mode, 1834 struct dentry *parent, 1835 void *data, 1836 const struct file_operations *fops) 1837 { 1838 return ERR_PTR(-ENODEV); 1839 } 1840 1841 static inline struct dentry *securityfs_create_symlink(const char *name, 1842 struct dentry *parent, 1843 const char *target, 1844 const struct inode_operations *iops) 1845 { 1846 return ERR_PTR(-ENODEV); 1847 } 1848 1849 static inline void securityfs_remove(struct dentry *dentry) 1850 {} 1851 1852 #endif 1853 1854 #ifdef CONFIG_BPF_SYSCALL 1855 union bpf_attr; 1856 struct bpf_map; 1857 struct bpf_prog; 1858 struct bpf_prog_aux; 1859 #ifdef CONFIG_SECURITY 1860 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1861 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1862 extern int security_bpf_prog(struct bpf_prog *prog); 1863 extern int security_bpf_map_alloc(struct bpf_map *map); 1864 extern void security_bpf_map_free(struct bpf_map *map); 1865 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1866 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1867 #else 1868 static inline int security_bpf(int cmd, union bpf_attr *attr, 1869 unsigned int size) 1870 { 1871 return 0; 1872 } 1873 1874 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1875 { 1876 return 0; 1877 } 1878 1879 static inline int security_bpf_prog(struct bpf_prog *prog) 1880 { 1881 return 0; 1882 } 1883 1884 static inline int security_bpf_map_alloc(struct bpf_map *map) 1885 { 1886 return 0; 1887 } 1888 1889 static inline void security_bpf_map_free(struct bpf_map *map) 1890 { } 1891 1892 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1893 { 1894 return 0; 1895 } 1896 1897 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1898 { } 1899 #endif /* CONFIG_SECURITY */ 1900 #endif /* CONFIG_BPF_SYSCALL */ 1901 1902 #ifdef CONFIG_PERF_EVENTS 1903 struct perf_event_attr; 1904 struct perf_event; 1905 1906 #ifdef CONFIG_SECURITY 1907 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1908 extern int security_perf_event_alloc(struct perf_event *event); 1909 extern void security_perf_event_free(struct perf_event *event); 1910 extern int security_perf_event_read(struct perf_event *event); 1911 extern int security_perf_event_write(struct perf_event *event); 1912 #else 1913 static inline int security_perf_event_open(struct perf_event_attr *attr, 1914 int type) 1915 { 1916 return 0; 1917 } 1918 1919 static inline int security_perf_event_alloc(struct perf_event *event) 1920 { 1921 return 0; 1922 } 1923 1924 static inline void security_perf_event_free(struct perf_event *event) 1925 { 1926 } 1927 1928 static inline int security_perf_event_read(struct perf_event *event) 1929 { 1930 return 0; 1931 } 1932 1933 static inline int security_perf_event_write(struct perf_event *event) 1934 { 1935 return 0; 1936 } 1937 #endif /* CONFIG_SECURITY */ 1938 #endif /* CONFIG_PERF_EVENTS */ 1939 1940 #endif /* ! __LINUX_SECURITY_H */ 1941