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 34 struct linux_binprm; 35 struct cred; 36 struct rlimit; 37 struct kernel_siginfo; 38 struct sembuf; 39 struct kern_ipc_perm; 40 struct audit_context; 41 struct super_block; 42 struct inode; 43 struct dentry; 44 struct file; 45 struct vfsmount; 46 struct path; 47 struct qstr; 48 struct iattr; 49 struct fown_struct; 50 struct file_operations; 51 struct msg_msg; 52 struct xattr; 53 struct kernfs_node; 54 struct xfrm_sec_ctx; 55 struct mm_struct; 56 struct fs_context; 57 struct fs_parameter; 58 enum fs_value_type; 59 60 /* Default (no) options for the capable function */ 61 #define CAP_OPT_NONE 0x0 62 /* If capable should audit the security request */ 63 #define CAP_OPT_NOAUDIT BIT(1) 64 /* If capable is being called by a setid function */ 65 #define CAP_OPT_INSETID BIT(2) 66 67 /* LSM Agnostic defines for fs_context::lsm_flags */ 68 #define SECURITY_LSM_NATIVE_LABELS 1 69 70 struct ctl_table; 71 struct audit_krule; 72 struct user_namespace; 73 struct timezone; 74 75 enum lsm_event { 76 LSM_POLICY_CHANGE, 77 }; 78 79 /* 80 * These are reasons that can be passed to the security_locked_down() 81 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 82 * ability for userland to modify kernel code) are placed before 83 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 84 * confidentiality (ie, the ability for userland to extract 85 * information from the running kernel that would otherwise be 86 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 87 * 88 * LSM authors should note that the semantics of any given lockdown 89 * reason are not guaranteed to be stable - the same reason may block 90 * one set of features in one kernel release, and a slightly different 91 * set of features in a later kernel release. LSMs that seek to expose 92 * lockdown policy at any level of granularity other than "none", 93 * "integrity" or "confidentiality" are responsible for either 94 * ensuring that they expose a consistent level of functionality to 95 * userland, or ensuring that userland is aware that this is 96 * potentially a moving target. It is easy to misuse this information 97 * in a way that could break userspace. Please be careful not to do 98 * so. 99 * 100 * If you add to this, remember to extend lockdown_reasons in 101 * security/lockdown/lockdown.c. 102 */ 103 enum lockdown_reason { 104 LOCKDOWN_NONE, 105 LOCKDOWN_MODULE_SIGNATURE, 106 LOCKDOWN_DEV_MEM, 107 LOCKDOWN_EFI_TEST, 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_XMON_WR, 120 LOCKDOWN_INTEGRITY_MAX, 121 LOCKDOWN_KCORE, 122 LOCKDOWN_KPROBES, 123 LOCKDOWN_BPF_READ, 124 LOCKDOWN_PERF, 125 LOCKDOWN_TRACEFS, 126 LOCKDOWN_XMON_RW, 127 LOCKDOWN_CONFIDENTIALITY_MAX, 128 }; 129 130 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 131 132 /* These functions are in security/commoncap.c */ 133 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 134 int cap, unsigned int opts); 135 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 136 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 137 extern int cap_ptrace_traceme(struct task_struct *parent); 138 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 139 extern int cap_capset(struct cred *new, const struct cred *old, 140 const kernel_cap_t *effective, 141 const kernel_cap_t *inheritable, 142 const kernel_cap_t *permitted); 143 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 144 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 145 const void *value, size_t size, int flags); 146 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 147 extern int cap_inode_need_killpriv(struct dentry *dentry); 148 extern int cap_inode_killpriv(struct dentry *dentry); 149 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 150 void **buffer, bool alloc); 151 extern int cap_mmap_addr(unsigned long addr); 152 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 153 unsigned long prot, unsigned long flags); 154 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 155 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 156 unsigned long arg4, unsigned long arg5); 157 extern int cap_task_setscheduler(struct task_struct *p); 158 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 159 extern int cap_task_setnice(struct task_struct *p, int nice); 160 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 161 162 struct msghdr; 163 struct sk_buff; 164 struct sock; 165 struct sockaddr; 166 struct socket; 167 struct flowi; 168 struct dst_entry; 169 struct xfrm_selector; 170 struct xfrm_policy; 171 struct xfrm_state; 172 struct xfrm_user_sec_ctx; 173 struct seq_file; 174 struct sctp_endpoint; 175 176 #ifdef CONFIG_MMU 177 extern unsigned long mmap_min_addr; 178 extern unsigned long dac_mmap_min_addr; 179 #else 180 #define mmap_min_addr 0UL 181 #define dac_mmap_min_addr 0UL 182 #endif 183 184 /* 185 * Values used in the task_security_ops calls 186 */ 187 /* setuid or setgid, id0 == uid or gid */ 188 #define LSM_SETID_ID 1 189 190 /* setreuid or setregid, id0 == real, id1 == eff */ 191 #define LSM_SETID_RE 2 192 193 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 194 #define LSM_SETID_RES 4 195 196 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 197 #define LSM_SETID_FS 8 198 199 /* Flags for security_task_prlimit(). */ 200 #define LSM_PRLIMIT_READ 1 201 #define LSM_PRLIMIT_WRITE 2 202 203 /* forward declares to avoid warnings */ 204 struct sched_param; 205 struct request_sock; 206 207 /* bprm->unsafe reasons */ 208 #define LSM_UNSAFE_SHARE 1 209 #define LSM_UNSAFE_PTRACE 2 210 #define LSM_UNSAFE_NO_NEW_PRIVS 4 211 212 #ifdef CONFIG_MMU 213 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 214 void __user *buffer, size_t *lenp, loff_t *ppos); 215 #endif 216 217 /* security_inode_init_security callback function to write xattrs */ 218 typedef int (*initxattrs) (struct inode *inode, 219 const struct xattr *xattr_array, void *fs_data); 220 221 222 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 223 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 224 #define __data_id_stringify(dummy, str) #str, 225 226 enum kernel_load_data_id { 227 __kernel_read_file_id(__data_id_enumify) 228 }; 229 230 static const char * const kernel_load_data_str[] = { 231 __kernel_read_file_id(__data_id_stringify) 232 }; 233 234 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 235 { 236 if ((unsigned)id >= LOADING_MAX_ID) 237 return kernel_load_data_str[LOADING_UNKNOWN]; 238 239 return kernel_load_data_str[id]; 240 } 241 242 #ifdef CONFIG_SECURITY 243 244 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 245 int register_blocking_lsm_notifier(struct notifier_block *nb); 246 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 247 248 /* prototypes */ 249 extern int security_init(void); 250 extern int early_security_init(void); 251 252 /* Security operations */ 253 int security_binder_set_context_mgr(struct task_struct *mgr); 254 int security_binder_transaction(struct task_struct *from, 255 struct task_struct *to); 256 int security_binder_transfer_binder(struct task_struct *from, 257 struct task_struct *to); 258 int security_binder_transfer_file(struct task_struct *from, 259 struct task_struct *to, struct file *file); 260 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 261 int security_ptrace_traceme(struct task_struct *parent); 262 int security_capget(struct task_struct *target, 263 kernel_cap_t *effective, 264 kernel_cap_t *inheritable, 265 kernel_cap_t *permitted); 266 int security_capset(struct cred *new, const struct cred *old, 267 const kernel_cap_t *effective, 268 const kernel_cap_t *inheritable, 269 const kernel_cap_t *permitted); 270 int security_capable(const struct cred *cred, 271 struct user_namespace *ns, 272 int cap, 273 unsigned int opts); 274 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 275 int security_quota_on(struct dentry *dentry); 276 int security_syslog(int type); 277 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 278 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 279 int security_bprm_set_creds(struct linux_binprm *bprm); 280 int security_bprm_check(struct linux_binprm *bprm); 281 void security_bprm_committing_creds(struct linux_binprm *bprm); 282 void security_bprm_committed_creds(struct linux_binprm *bprm); 283 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 284 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 285 int security_sb_alloc(struct super_block *sb); 286 void security_sb_free(struct super_block *sb); 287 void security_free_mnt_opts(void **mnt_opts); 288 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 289 int security_sb_remount(struct super_block *sb, void *mnt_opts); 290 int security_sb_kern_mount(struct super_block *sb); 291 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 292 int security_sb_statfs(struct dentry *dentry); 293 int security_sb_mount(const char *dev_name, const struct path *path, 294 const char *type, unsigned long flags, void *data); 295 int security_sb_umount(struct vfsmount *mnt, int flags); 296 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 297 int security_sb_set_mnt_opts(struct super_block *sb, 298 void *mnt_opts, 299 unsigned long kern_flags, 300 unsigned long *set_kern_flags); 301 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 302 struct super_block *newsb, 303 unsigned long kern_flags, 304 unsigned long *set_kern_flags); 305 int security_add_mnt_opt(const char *option, const char *val, 306 int len, void **mnt_opts); 307 int security_move_mount(const struct path *from_path, const struct path *to_path); 308 int security_dentry_init_security(struct dentry *dentry, int mode, 309 const struct qstr *name, void **ctx, 310 u32 *ctxlen); 311 int security_dentry_create_files_as(struct dentry *dentry, int mode, 312 struct qstr *name, 313 const struct cred *old, 314 struct cred *new); 315 int security_path_notify(const struct path *path, u64 mask, 316 unsigned int obj_type); 317 int security_inode_alloc(struct inode *inode); 318 void security_inode_free(struct inode *inode); 319 int security_inode_init_security(struct inode *inode, struct inode *dir, 320 const struct qstr *qstr, 321 initxattrs initxattrs, void *fs_data); 322 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 323 const struct qstr *qstr, const char **name, 324 void **value, size_t *len); 325 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 326 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 327 struct dentry *new_dentry); 328 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 329 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 330 const char *old_name); 331 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 332 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 333 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 334 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 335 struct inode *new_dir, struct dentry *new_dentry, 336 unsigned int flags); 337 int security_inode_readlink(struct dentry *dentry); 338 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 339 bool rcu); 340 int security_inode_permission(struct inode *inode, int mask); 341 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 342 int security_inode_getattr(const struct path *path); 343 int security_inode_setxattr(struct dentry *dentry, const char *name, 344 const void *value, size_t size, int flags); 345 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 346 const void *value, size_t size, int flags); 347 int security_inode_getxattr(struct dentry *dentry, const char *name); 348 int security_inode_listxattr(struct dentry *dentry); 349 int security_inode_removexattr(struct dentry *dentry, const char *name); 350 int security_inode_need_killpriv(struct dentry *dentry); 351 int security_inode_killpriv(struct dentry *dentry); 352 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 353 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 354 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 355 void security_inode_getsecid(struct inode *inode, u32 *secid); 356 int security_inode_copy_up(struct dentry *src, struct cred **new); 357 int security_inode_copy_up_xattr(const char *name); 358 int security_kernfs_init_security(struct kernfs_node *kn_dir, 359 struct kernfs_node *kn); 360 int security_file_permission(struct file *file, int mask); 361 int security_file_alloc(struct file *file); 362 void security_file_free(struct file *file); 363 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 364 int security_mmap_file(struct file *file, unsigned long prot, 365 unsigned long flags); 366 int security_mmap_addr(unsigned long addr); 367 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 368 unsigned long prot); 369 int security_file_lock(struct file *file, unsigned int cmd); 370 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 371 void security_file_set_fowner(struct file *file); 372 int security_file_send_sigiotask(struct task_struct *tsk, 373 struct fown_struct *fown, int sig); 374 int security_file_receive(struct file *file); 375 int security_file_open(struct file *file); 376 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 377 void security_task_free(struct task_struct *task); 378 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 379 void security_cred_free(struct cred *cred); 380 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 381 void security_transfer_creds(struct cred *new, const struct cred *old); 382 void security_cred_getsecid(const struct cred *c, u32 *secid); 383 int security_kernel_act_as(struct cred *new, u32 secid); 384 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 385 int security_kernel_module_request(char *kmod_name); 386 int security_kernel_load_data(enum kernel_load_data_id id); 387 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 388 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 389 enum kernel_read_file_id id); 390 int security_task_fix_setuid(struct cred *new, const struct cred *old, 391 int flags); 392 int security_task_setpgid(struct task_struct *p, pid_t pgid); 393 int security_task_getpgid(struct task_struct *p); 394 int security_task_getsid(struct task_struct *p); 395 void security_task_getsecid(struct task_struct *p, u32 *secid); 396 int security_task_setnice(struct task_struct *p, int nice); 397 int security_task_setioprio(struct task_struct *p, int ioprio); 398 int security_task_getioprio(struct task_struct *p); 399 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 400 unsigned int flags); 401 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 402 struct rlimit *new_rlim); 403 int security_task_setscheduler(struct task_struct *p); 404 int security_task_getscheduler(struct task_struct *p); 405 int security_task_movememory(struct task_struct *p); 406 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 407 int sig, const struct cred *cred); 408 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 409 unsigned long arg4, unsigned long arg5); 410 void security_task_to_inode(struct task_struct *p, struct inode *inode); 411 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 412 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 413 int security_msg_msg_alloc(struct msg_msg *msg); 414 void security_msg_msg_free(struct msg_msg *msg); 415 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 416 void security_msg_queue_free(struct kern_ipc_perm *msq); 417 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 418 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 419 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 420 struct msg_msg *msg, int msqflg); 421 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 422 struct task_struct *target, long type, int mode); 423 int security_shm_alloc(struct kern_ipc_perm *shp); 424 void security_shm_free(struct kern_ipc_perm *shp); 425 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 426 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 427 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 428 int security_sem_alloc(struct kern_ipc_perm *sma); 429 void security_sem_free(struct kern_ipc_perm *sma); 430 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 431 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 432 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 433 unsigned nsops, int alter); 434 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 435 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 436 char **value); 437 int security_setprocattr(const char *lsm, const char *name, void *value, 438 size_t size); 439 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 440 int security_ismaclabel(const char *name); 441 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 442 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 443 void security_release_secctx(char *secdata, u32 seclen); 444 void security_inode_invalidate_secctx(struct inode *inode); 445 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 446 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 447 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 448 int security_locked_down(enum lockdown_reason what); 449 #else /* CONFIG_SECURITY */ 450 451 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 452 { 453 return 0; 454 } 455 456 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 457 { 458 return 0; 459 } 460 461 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 462 { 463 return 0; 464 } 465 466 static inline void security_free_mnt_opts(void **mnt_opts) 467 { 468 } 469 470 /* 471 * This is the default capabilities functionality. Most of these functions 472 * are just stubbed out, but a few must call the proper capable code. 473 */ 474 475 static inline int security_init(void) 476 { 477 return 0; 478 } 479 480 static inline int early_security_init(void) 481 { 482 return 0; 483 } 484 485 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 486 { 487 return 0; 488 } 489 490 static inline int security_binder_transaction(struct task_struct *from, 491 struct task_struct *to) 492 { 493 return 0; 494 } 495 496 static inline int security_binder_transfer_binder(struct task_struct *from, 497 struct task_struct *to) 498 { 499 return 0; 500 } 501 502 static inline int security_binder_transfer_file(struct task_struct *from, 503 struct task_struct *to, 504 struct file *file) 505 { 506 return 0; 507 } 508 509 static inline int security_ptrace_access_check(struct task_struct *child, 510 unsigned int mode) 511 { 512 return cap_ptrace_access_check(child, mode); 513 } 514 515 static inline int security_ptrace_traceme(struct task_struct *parent) 516 { 517 return cap_ptrace_traceme(parent); 518 } 519 520 static inline int security_capget(struct task_struct *target, 521 kernel_cap_t *effective, 522 kernel_cap_t *inheritable, 523 kernel_cap_t *permitted) 524 { 525 return cap_capget(target, effective, inheritable, permitted); 526 } 527 528 static inline int security_capset(struct cred *new, 529 const struct cred *old, 530 const kernel_cap_t *effective, 531 const kernel_cap_t *inheritable, 532 const kernel_cap_t *permitted) 533 { 534 return cap_capset(new, old, effective, inheritable, permitted); 535 } 536 537 static inline int security_capable(const struct cred *cred, 538 struct user_namespace *ns, 539 int cap, 540 unsigned int opts) 541 { 542 return cap_capable(cred, ns, cap, opts); 543 } 544 545 static inline int security_quotactl(int cmds, int type, int id, 546 struct super_block *sb) 547 { 548 return 0; 549 } 550 551 static inline int security_quota_on(struct dentry *dentry) 552 { 553 return 0; 554 } 555 556 static inline int security_syslog(int type) 557 { 558 return 0; 559 } 560 561 static inline int security_settime64(const struct timespec64 *ts, 562 const struct timezone *tz) 563 { 564 return cap_settime(ts, tz); 565 } 566 567 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 568 { 569 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 570 } 571 572 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 573 { 574 return cap_bprm_set_creds(bprm); 575 } 576 577 static inline int security_bprm_check(struct linux_binprm *bprm) 578 { 579 return 0; 580 } 581 582 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 583 { 584 } 585 586 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 587 { 588 } 589 590 static inline int security_fs_context_dup(struct fs_context *fc, 591 struct fs_context *src_fc) 592 { 593 return 0; 594 } 595 static inline int security_fs_context_parse_param(struct fs_context *fc, 596 struct fs_parameter *param) 597 { 598 return -ENOPARAM; 599 } 600 601 static inline int security_sb_alloc(struct super_block *sb) 602 { 603 return 0; 604 } 605 606 static inline void security_sb_free(struct super_block *sb) 607 { } 608 609 static inline int security_sb_eat_lsm_opts(char *options, 610 void **mnt_opts) 611 { 612 return 0; 613 } 614 615 static inline int security_sb_remount(struct super_block *sb, 616 void *mnt_opts) 617 { 618 return 0; 619 } 620 621 static inline int security_sb_kern_mount(struct super_block *sb) 622 { 623 return 0; 624 } 625 626 static inline int security_sb_show_options(struct seq_file *m, 627 struct super_block *sb) 628 { 629 return 0; 630 } 631 632 static inline int security_sb_statfs(struct dentry *dentry) 633 { 634 return 0; 635 } 636 637 static inline int security_sb_mount(const char *dev_name, const struct path *path, 638 const char *type, unsigned long flags, 639 void *data) 640 { 641 return 0; 642 } 643 644 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 645 { 646 return 0; 647 } 648 649 static inline int security_sb_pivotroot(const struct path *old_path, 650 const struct path *new_path) 651 { 652 return 0; 653 } 654 655 static inline int security_sb_set_mnt_opts(struct super_block *sb, 656 void *mnt_opts, 657 unsigned long kern_flags, 658 unsigned long *set_kern_flags) 659 { 660 return 0; 661 } 662 663 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 664 struct super_block *newsb, 665 unsigned long kern_flags, 666 unsigned long *set_kern_flags) 667 { 668 return 0; 669 } 670 671 static inline int security_add_mnt_opt(const char *option, const char *val, 672 int len, void **mnt_opts) 673 { 674 return 0; 675 } 676 677 static inline int security_move_mount(const struct path *from_path, 678 const struct path *to_path) 679 { 680 return 0; 681 } 682 683 static inline int security_path_notify(const struct path *path, u64 mask, 684 unsigned int obj_type) 685 { 686 return 0; 687 } 688 689 static inline int security_inode_alloc(struct inode *inode) 690 { 691 return 0; 692 } 693 694 static inline void security_inode_free(struct inode *inode) 695 { } 696 697 static inline int security_dentry_init_security(struct dentry *dentry, 698 int mode, 699 const struct qstr *name, 700 void **ctx, 701 u32 *ctxlen) 702 { 703 return -EOPNOTSUPP; 704 } 705 706 static inline int security_dentry_create_files_as(struct dentry *dentry, 707 int mode, struct qstr *name, 708 const struct cred *old, 709 struct cred *new) 710 { 711 return 0; 712 } 713 714 715 static inline int security_inode_init_security(struct inode *inode, 716 struct inode *dir, 717 const struct qstr *qstr, 718 const initxattrs xattrs, 719 void *fs_data) 720 { 721 return 0; 722 } 723 724 static inline int security_old_inode_init_security(struct inode *inode, 725 struct inode *dir, 726 const struct qstr *qstr, 727 const char **name, 728 void **value, size_t *len) 729 { 730 return -EOPNOTSUPP; 731 } 732 733 static inline int security_inode_create(struct inode *dir, 734 struct dentry *dentry, 735 umode_t mode) 736 { 737 return 0; 738 } 739 740 static inline int security_inode_link(struct dentry *old_dentry, 741 struct inode *dir, 742 struct dentry *new_dentry) 743 { 744 return 0; 745 } 746 747 static inline int security_inode_unlink(struct inode *dir, 748 struct dentry *dentry) 749 { 750 return 0; 751 } 752 753 static inline int security_inode_symlink(struct inode *dir, 754 struct dentry *dentry, 755 const char *old_name) 756 { 757 return 0; 758 } 759 760 static inline int security_inode_mkdir(struct inode *dir, 761 struct dentry *dentry, 762 int mode) 763 { 764 return 0; 765 } 766 767 static inline int security_inode_rmdir(struct inode *dir, 768 struct dentry *dentry) 769 { 770 return 0; 771 } 772 773 static inline int security_inode_mknod(struct inode *dir, 774 struct dentry *dentry, 775 int mode, dev_t dev) 776 { 777 return 0; 778 } 779 780 static inline int security_inode_rename(struct inode *old_dir, 781 struct dentry *old_dentry, 782 struct inode *new_dir, 783 struct dentry *new_dentry, 784 unsigned int flags) 785 { 786 return 0; 787 } 788 789 static inline int security_inode_readlink(struct dentry *dentry) 790 { 791 return 0; 792 } 793 794 static inline int security_inode_follow_link(struct dentry *dentry, 795 struct inode *inode, 796 bool rcu) 797 { 798 return 0; 799 } 800 801 static inline int security_inode_permission(struct inode *inode, int mask) 802 { 803 return 0; 804 } 805 806 static inline int security_inode_setattr(struct dentry *dentry, 807 struct iattr *attr) 808 { 809 return 0; 810 } 811 812 static inline int security_inode_getattr(const struct path *path) 813 { 814 return 0; 815 } 816 817 static inline int security_inode_setxattr(struct dentry *dentry, 818 const char *name, const void *value, size_t size, int flags) 819 { 820 return cap_inode_setxattr(dentry, name, value, size, flags); 821 } 822 823 static inline void security_inode_post_setxattr(struct dentry *dentry, 824 const char *name, const void *value, size_t size, int flags) 825 { } 826 827 static inline int security_inode_getxattr(struct dentry *dentry, 828 const char *name) 829 { 830 return 0; 831 } 832 833 static inline int security_inode_listxattr(struct dentry *dentry) 834 { 835 return 0; 836 } 837 838 static inline int security_inode_removexattr(struct dentry *dentry, 839 const char *name) 840 { 841 return cap_inode_removexattr(dentry, name); 842 } 843 844 static inline int security_inode_need_killpriv(struct dentry *dentry) 845 { 846 return cap_inode_need_killpriv(dentry); 847 } 848 849 static inline int security_inode_killpriv(struct dentry *dentry) 850 { 851 return cap_inode_killpriv(dentry); 852 } 853 854 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 855 { 856 return -EOPNOTSUPP; 857 } 858 859 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 860 { 861 return -EOPNOTSUPP; 862 } 863 864 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 865 { 866 return 0; 867 } 868 869 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 870 { 871 *secid = 0; 872 } 873 874 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 875 { 876 return 0; 877 } 878 879 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 880 struct kernfs_node *kn) 881 { 882 return 0; 883 } 884 885 static inline int security_inode_copy_up_xattr(const char *name) 886 { 887 return -EOPNOTSUPP; 888 } 889 890 static inline int security_file_permission(struct file *file, int mask) 891 { 892 return 0; 893 } 894 895 static inline int security_file_alloc(struct file *file) 896 { 897 return 0; 898 } 899 900 static inline void security_file_free(struct file *file) 901 { } 902 903 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 904 unsigned long arg) 905 { 906 return 0; 907 } 908 909 static inline int security_mmap_file(struct file *file, unsigned long prot, 910 unsigned long flags) 911 { 912 return 0; 913 } 914 915 static inline int security_mmap_addr(unsigned long addr) 916 { 917 return cap_mmap_addr(addr); 918 } 919 920 static inline int security_file_mprotect(struct vm_area_struct *vma, 921 unsigned long reqprot, 922 unsigned long prot) 923 { 924 return 0; 925 } 926 927 static inline int security_file_lock(struct file *file, unsigned int cmd) 928 { 929 return 0; 930 } 931 932 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 933 unsigned long arg) 934 { 935 return 0; 936 } 937 938 static inline void security_file_set_fowner(struct file *file) 939 { 940 return; 941 } 942 943 static inline int security_file_send_sigiotask(struct task_struct *tsk, 944 struct fown_struct *fown, 945 int sig) 946 { 947 return 0; 948 } 949 950 static inline int security_file_receive(struct file *file) 951 { 952 return 0; 953 } 954 955 static inline int security_file_open(struct file *file) 956 { 957 return 0; 958 } 959 960 static inline int security_task_alloc(struct task_struct *task, 961 unsigned long clone_flags) 962 { 963 return 0; 964 } 965 966 static inline void security_task_free(struct task_struct *task) 967 { } 968 969 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 970 { 971 return 0; 972 } 973 974 static inline void security_cred_free(struct cred *cred) 975 { } 976 977 static inline int security_prepare_creds(struct cred *new, 978 const struct cred *old, 979 gfp_t gfp) 980 { 981 return 0; 982 } 983 984 static inline void security_transfer_creds(struct cred *new, 985 const struct cred *old) 986 { 987 } 988 989 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 990 { 991 return 0; 992 } 993 994 static inline int security_kernel_create_files_as(struct cred *cred, 995 struct inode *inode) 996 { 997 return 0; 998 } 999 1000 static inline int security_kernel_module_request(char *kmod_name) 1001 { 1002 return 0; 1003 } 1004 1005 static inline int security_kernel_load_data(enum kernel_load_data_id id) 1006 { 1007 return 0; 1008 } 1009 1010 static inline int security_kernel_read_file(struct file *file, 1011 enum kernel_read_file_id id) 1012 { 1013 return 0; 1014 } 1015 1016 static inline int security_kernel_post_read_file(struct file *file, 1017 char *buf, loff_t size, 1018 enum kernel_read_file_id id) 1019 { 1020 return 0; 1021 } 1022 1023 static inline int security_task_fix_setuid(struct cred *new, 1024 const struct cred *old, 1025 int flags) 1026 { 1027 return cap_task_fix_setuid(new, old, flags); 1028 } 1029 1030 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1031 { 1032 return 0; 1033 } 1034 1035 static inline int security_task_getpgid(struct task_struct *p) 1036 { 1037 return 0; 1038 } 1039 1040 static inline int security_task_getsid(struct task_struct *p) 1041 { 1042 return 0; 1043 } 1044 1045 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1046 { 1047 *secid = 0; 1048 } 1049 1050 static inline int security_task_setnice(struct task_struct *p, int nice) 1051 { 1052 return cap_task_setnice(p, nice); 1053 } 1054 1055 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1056 { 1057 return cap_task_setioprio(p, ioprio); 1058 } 1059 1060 static inline int security_task_getioprio(struct task_struct *p) 1061 { 1062 return 0; 1063 } 1064 1065 static inline int security_task_prlimit(const struct cred *cred, 1066 const struct cred *tcred, 1067 unsigned int flags) 1068 { 1069 return 0; 1070 } 1071 1072 static inline int security_task_setrlimit(struct task_struct *p, 1073 unsigned int resource, 1074 struct rlimit *new_rlim) 1075 { 1076 return 0; 1077 } 1078 1079 static inline int security_task_setscheduler(struct task_struct *p) 1080 { 1081 return cap_task_setscheduler(p); 1082 } 1083 1084 static inline int security_task_getscheduler(struct task_struct *p) 1085 { 1086 return 0; 1087 } 1088 1089 static inline int security_task_movememory(struct task_struct *p) 1090 { 1091 return 0; 1092 } 1093 1094 static inline int security_task_kill(struct task_struct *p, 1095 struct kernel_siginfo *info, int sig, 1096 const struct cred *cred) 1097 { 1098 return 0; 1099 } 1100 1101 static inline int security_task_prctl(int option, unsigned long arg2, 1102 unsigned long arg3, 1103 unsigned long arg4, 1104 unsigned long arg5) 1105 { 1106 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1107 } 1108 1109 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1110 { } 1111 1112 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1113 short flag) 1114 { 1115 return 0; 1116 } 1117 1118 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1119 { 1120 *secid = 0; 1121 } 1122 1123 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1124 { 1125 return 0; 1126 } 1127 1128 static inline void security_msg_msg_free(struct msg_msg *msg) 1129 { } 1130 1131 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1132 { 1133 return 0; 1134 } 1135 1136 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1137 { } 1138 1139 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1140 int msqflg) 1141 { 1142 return 0; 1143 } 1144 1145 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1146 { 1147 return 0; 1148 } 1149 1150 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1151 struct msg_msg *msg, int msqflg) 1152 { 1153 return 0; 1154 } 1155 1156 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1157 struct msg_msg *msg, 1158 struct task_struct *target, 1159 long type, int mode) 1160 { 1161 return 0; 1162 } 1163 1164 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1165 { 1166 return 0; 1167 } 1168 1169 static inline void security_shm_free(struct kern_ipc_perm *shp) 1170 { } 1171 1172 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1173 int shmflg) 1174 { 1175 return 0; 1176 } 1177 1178 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1179 { 1180 return 0; 1181 } 1182 1183 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1184 char __user *shmaddr, int shmflg) 1185 { 1186 return 0; 1187 } 1188 1189 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1190 { 1191 return 0; 1192 } 1193 1194 static inline void security_sem_free(struct kern_ipc_perm *sma) 1195 { } 1196 1197 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1198 { 1199 return 0; 1200 } 1201 1202 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1203 { 1204 return 0; 1205 } 1206 1207 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1208 struct sembuf *sops, unsigned nsops, 1209 int alter) 1210 { 1211 return 0; 1212 } 1213 1214 static inline void security_d_instantiate(struct dentry *dentry, 1215 struct inode *inode) 1216 { } 1217 1218 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1219 char *name, char **value) 1220 { 1221 return -EINVAL; 1222 } 1223 1224 static inline int security_setprocattr(const char *lsm, char *name, 1225 void *value, size_t size) 1226 { 1227 return -EINVAL; 1228 } 1229 1230 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1231 { 1232 return 0; 1233 } 1234 1235 static inline int security_ismaclabel(const char *name) 1236 { 1237 return 0; 1238 } 1239 1240 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1241 { 1242 return -EOPNOTSUPP; 1243 } 1244 1245 static inline int security_secctx_to_secid(const char *secdata, 1246 u32 seclen, 1247 u32 *secid) 1248 { 1249 return -EOPNOTSUPP; 1250 } 1251 1252 static inline void security_release_secctx(char *secdata, u32 seclen) 1253 { 1254 } 1255 1256 static inline void security_inode_invalidate_secctx(struct inode *inode) 1257 { 1258 } 1259 1260 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1261 { 1262 return -EOPNOTSUPP; 1263 } 1264 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1265 { 1266 return -EOPNOTSUPP; 1267 } 1268 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1269 { 1270 return -EOPNOTSUPP; 1271 } 1272 static inline int security_locked_down(enum lockdown_reason what) 1273 { 1274 return 0; 1275 } 1276 #endif /* CONFIG_SECURITY */ 1277 1278 #ifdef CONFIG_SECURITY_NETWORK 1279 1280 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1281 int security_unix_may_send(struct socket *sock, struct socket *other); 1282 int security_socket_create(int family, int type, int protocol, int kern); 1283 int security_socket_post_create(struct socket *sock, int family, 1284 int type, int protocol, int kern); 1285 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1286 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1287 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1288 int security_socket_listen(struct socket *sock, int backlog); 1289 int security_socket_accept(struct socket *sock, struct socket *newsock); 1290 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1291 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1292 int size, int flags); 1293 int security_socket_getsockname(struct socket *sock); 1294 int security_socket_getpeername(struct socket *sock); 1295 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1296 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1297 int security_socket_shutdown(struct socket *sock, int how); 1298 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1299 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1300 int __user *optlen, unsigned len); 1301 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1302 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1303 void security_sk_free(struct sock *sk); 1304 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1305 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1306 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1307 void security_sock_graft(struct sock*sk, struct socket *parent); 1308 int security_inet_conn_request(struct sock *sk, 1309 struct sk_buff *skb, struct request_sock *req); 1310 void security_inet_csk_clone(struct sock *newsk, 1311 const struct request_sock *req); 1312 void security_inet_conn_established(struct sock *sk, 1313 struct sk_buff *skb); 1314 int security_secmark_relabel_packet(u32 secid); 1315 void security_secmark_refcount_inc(void); 1316 void security_secmark_refcount_dec(void); 1317 int security_tun_dev_alloc_security(void **security); 1318 void security_tun_dev_free_security(void *security); 1319 int security_tun_dev_create(void); 1320 int security_tun_dev_attach_queue(void *security); 1321 int security_tun_dev_attach(struct sock *sk, void *security); 1322 int security_tun_dev_open(void *security); 1323 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1324 int security_sctp_bind_connect(struct sock *sk, int optname, 1325 struct sockaddr *address, int addrlen); 1326 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1327 struct sock *newsk); 1328 1329 #else /* CONFIG_SECURITY_NETWORK */ 1330 static inline int security_unix_stream_connect(struct sock *sock, 1331 struct sock *other, 1332 struct sock *newsk) 1333 { 1334 return 0; 1335 } 1336 1337 static inline int security_unix_may_send(struct socket *sock, 1338 struct socket *other) 1339 { 1340 return 0; 1341 } 1342 1343 static inline int security_socket_create(int family, int type, 1344 int protocol, int kern) 1345 { 1346 return 0; 1347 } 1348 1349 static inline int security_socket_post_create(struct socket *sock, 1350 int family, 1351 int type, 1352 int protocol, int kern) 1353 { 1354 return 0; 1355 } 1356 1357 static inline int security_socket_socketpair(struct socket *socka, 1358 struct socket *sockb) 1359 { 1360 return 0; 1361 } 1362 1363 static inline int security_socket_bind(struct socket *sock, 1364 struct sockaddr *address, 1365 int addrlen) 1366 { 1367 return 0; 1368 } 1369 1370 static inline int security_socket_connect(struct socket *sock, 1371 struct sockaddr *address, 1372 int addrlen) 1373 { 1374 return 0; 1375 } 1376 1377 static inline int security_socket_listen(struct socket *sock, int backlog) 1378 { 1379 return 0; 1380 } 1381 1382 static inline int security_socket_accept(struct socket *sock, 1383 struct socket *newsock) 1384 { 1385 return 0; 1386 } 1387 1388 static inline int security_socket_sendmsg(struct socket *sock, 1389 struct msghdr *msg, int size) 1390 { 1391 return 0; 1392 } 1393 1394 static inline int security_socket_recvmsg(struct socket *sock, 1395 struct msghdr *msg, int size, 1396 int flags) 1397 { 1398 return 0; 1399 } 1400 1401 static inline int security_socket_getsockname(struct socket *sock) 1402 { 1403 return 0; 1404 } 1405 1406 static inline int security_socket_getpeername(struct socket *sock) 1407 { 1408 return 0; 1409 } 1410 1411 static inline int security_socket_getsockopt(struct socket *sock, 1412 int level, int optname) 1413 { 1414 return 0; 1415 } 1416 1417 static inline int security_socket_setsockopt(struct socket *sock, 1418 int level, int optname) 1419 { 1420 return 0; 1421 } 1422 1423 static inline int security_socket_shutdown(struct socket *sock, int how) 1424 { 1425 return 0; 1426 } 1427 static inline int security_sock_rcv_skb(struct sock *sk, 1428 struct sk_buff *skb) 1429 { 1430 return 0; 1431 } 1432 1433 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1434 int __user *optlen, unsigned len) 1435 { 1436 return -ENOPROTOOPT; 1437 } 1438 1439 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1440 { 1441 return -ENOPROTOOPT; 1442 } 1443 1444 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1445 { 1446 return 0; 1447 } 1448 1449 static inline void security_sk_free(struct sock *sk) 1450 { 1451 } 1452 1453 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1454 { 1455 } 1456 1457 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1458 { 1459 } 1460 1461 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1462 { 1463 } 1464 1465 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1466 { 1467 } 1468 1469 static inline int security_inet_conn_request(struct sock *sk, 1470 struct sk_buff *skb, struct request_sock *req) 1471 { 1472 return 0; 1473 } 1474 1475 static inline void security_inet_csk_clone(struct sock *newsk, 1476 const struct request_sock *req) 1477 { 1478 } 1479 1480 static inline void security_inet_conn_established(struct sock *sk, 1481 struct sk_buff *skb) 1482 { 1483 } 1484 1485 static inline int security_secmark_relabel_packet(u32 secid) 1486 { 1487 return 0; 1488 } 1489 1490 static inline void security_secmark_refcount_inc(void) 1491 { 1492 } 1493 1494 static inline void security_secmark_refcount_dec(void) 1495 { 1496 } 1497 1498 static inline int security_tun_dev_alloc_security(void **security) 1499 { 1500 return 0; 1501 } 1502 1503 static inline void security_tun_dev_free_security(void *security) 1504 { 1505 } 1506 1507 static inline int security_tun_dev_create(void) 1508 { 1509 return 0; 1510 } 1511 1512 static inline int security_tun_dev_attach_queue(void *security) 1513 { 1514 return 0; 1515 } 1516 1517 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1518 { 1519 return 0; 1520 } 1521 1522 static inline int security_tun_dev_open(void *security) 1523 { 1524 return 0; 1525 } 1526 1527 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1528 struct sk_buff *skb) 1529 { 1530 return 0; 1531 } 1532 1533 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1534 struct sockaddr *address, 1535 int addrlen) 1536 { 1537 return 0; 1538 } 1539 1540 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1541 struct sock *sk, 1542 struct sock *newsk) 1543 { 1544 } 1545 #endif /* CONFIG_SECURITY_NETWORK */ 1546 1547 #ifdef CONFIG_SECURITY_INFINIBAND 1548 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1549 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1550 int security_ib_alloc_security(void **sec); 1551 void security_ib_free_security(void *sec); 1552 #else /* CONFIG_SECURITY_INFINIBAND */ 1553 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1554 { 1555 return 0; 1556 } 1557 1558 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1559 { 1560 return 0; 1561 } 1562 1563 static inline int security_ib_alloc_security(void **sec) 1564 { 1565 return 0; 1566 } 1567 1568 static inline void security_ib_free_security(void *sec) 1569 { 1570 } 1571 #endif /* CONFIG_SECURITY_INFINIBAND */ 1572 1573 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1574 1575 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1576 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1577 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1578 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1579 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1580 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1581 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1582 struct xfrm_sec_ctx *polsec, u32 secid); 1583 int security_xfrm_state_delete(struct xfrm_state *x); 1584 void security_xfrm_state_free(struct xfrm_state *x); 1585 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1586 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1587 struct xfrm_policy *xp, 1588 const struct flowi *fl); 1589 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1590 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1591 1592 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1593 1594 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1595 struct xfrm_user_sec_ctx *sec_ctx, 1596 gfp_t gfp) 1597 { 1598 return 0; 1599 } 1600 1601 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1602 { 1603 return 0; 1604 } 1605 1606 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1607 { 1608 } 1609 1610 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1611 { 1612 return 0; 1613 } 1614 1615 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1616 struct xfrm_user_sec_ctx *sec_ctx) 1617 { 1618 return 0; 1619 } 1620 1621 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1622 struct xfrm_sec_ctx *polsec, u32 secid) 1623 { 1624 return 0; 1625 } 1626 1627 static inline void security_xfrm_state_free(struct xfrm_state *x) 1628 { 1629 } 1630 1631 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1632 { 1633 return 0; 1634 } 1635 1636 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1637 { 1638 return 0; 1639 } 1640 1641 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1642 struct xfrm_policy *xp, const struct flowi *fl) 1643 { 1644 return 1; 1645 } 1646 1647 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1648 { 1649 return 0; 1650 } 1651 1652 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1653 { 1654 } 1655 1656 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1657 1658 #ifdef CONFIG_SECURITY_PATH 1659 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1660 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1661 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1662 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1663 unsigned int dev); 1664 int security_path_truncate(const struct path *path); 1665 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1666 const char *old_name); 1667 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1668 struct dentry *new_dentry); 1669 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1670 const struct path *new_dir, struct dentry *new_dentry, 1671 unsigned int flags); 1672 int security_path_chmod(const struct path *path, umode_t mode); 1673 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1674 int security_path_chroot(const struct path *path); 1675 #else /* CONFIG_SECURITY_PATH */ 1676 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1677 { 1678 return 0; 1679 } 1680 1681 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1682 umode_t mode) 1683 { 1684 return 0; 1685 } 1686 1687 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1688 { 1689 return 0; 1690 } 1691 1692 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1693 umode_t mode, unsigned int dev) 1694 { 1695 return 0; 1696 } 1697 1698 static inline int security_path_truncate(const struct path *path) 1699 { 1700 return 0; 1701 } 1702 1703 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1704 const char *old_name) 1705 { 1706 return 0; 1707 } 1708 1709 static inline int security_path_link(struct dentry *old_dentry, 1710 const struct path *new_dir, 1711 struct dentry *new_dentry) 1712 { 1713 return 0; 1714 } 1715 1716 static inline int security_path_rename(const struct path *old_dir, 1717 struct dentry *old_dentry, 1718 const struct path *new_dir, 1719 struct dentry *new_dentry, 1720 unsigned int flags) 1721 { 1722 return 0; 1723 } 1724 1725 static inline int security_path_chmod(const struct path *path, umode_t mode) 1726 { 1727 return 0; 1728 } 1729 1730 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1731 { 1732 return 0; 1733 } 1734 1735 static inline int security_path_chroot(const struct path *path) 1736 { 1737 return 0; 1738 } 1739 #endif /* CONFIG_SECURITY_PATH */ 1740 1741 #ifdef CONFIG_KEYS 1742 #ifdef CONFIG_SECURITY 1743 1744 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1745 void security_key_free(struct key *key); 1746 int security_key_permission(key_ref_t key_ref, 1747 const struct cred *cred, unsigned perm); 1748 int security_key_getsecurity(struct key *key, char **_buffer); 1749 1750 #else 1751 1752 static inline int security_key_alloc(struct key *key, 1753 const struct cred *cred, 1754 unsigned long flags) 1755 { 1756 return 0; 1757 } 1758 1759 static inline void security_key_free(struct key *key) 1760 { 1761 } 1762 1763 static inline int security_key_permission(key_ref_t key_ref, 1764 const struct cred *cred, 1765 unsigned perm) 1766 { 1767 return 0; 1768 } 1769 1770 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1771 { 1772 *_buffer = NULL; 1773 return 0; 1774 } 1775 1776 #endif 1777 #endif /* CONFIG_KEYS */ 1778 1779 #ifdef CONFIG_AUDIT 1780 #ifdef CONFIG_SECURITY 1781 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1782 int security_audit_rule_known(struct audit_krule *krule); 1783 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1784 void security_audit_rule_free(void *lsmrule); 1785 1786 #else 1787 1788 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1789 void **lsmrule) 1790 { 1791 return 0; 1792 } 1793 1794 static inline int security_audit_rule_known(struct audit_krule *krule) 1795 { 1796 return 0; 1797 } 1798 1799 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1800 void *lsmrule) 1801 { 1802 return 0; 1803 } 1804 1805 static inline void security_audit_rule_free(void *lsmrule) 1806 { } 1807 1808 #endif /* CONFIG_SECURITY */ 1809 #endif /* CONFIG_AUDIT */ 1810 1811 #ifdef CONFIG_SECURITYFS 1812 1813 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1814 struct dentry *parent, void *data, 1815 const struct file_operations *fops); 1816 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1817 struct dentry *securityfs_create_symlink(const char *name, 1818 struct dentry *parent, 1819 const char *target, 1820 const struct inode_operations *iops); 1821 extern void securityfs_remove(struct dentry *dentry); 1822 1823 #else /* CONFIG_SECURITYFS */ 1824 1825 static inline struct dentry *securityfs_create_dir(const char *name, 1826 struct dentry *parent) 1827 { 1828 return ERR_PTR(-ENODEV); 1829 } 1830 1831 static inline struct dentry *securityfs_create_file(const char *name, 1832 umode_t mode, 1833 struct dentry *parent, 1834 void *data, 1835 const struct file_operations *fops) 1836 { 1837 return ERR_PTR(-ENODEV); 1838 } 1839 1840 static inline struct dentry *securityfs_create_symlink(const char *name, 1841 struct dentry *parent, 1842 const char *target, 1843 const struct inode_operations *iops) 1844 { 1845 return ERR_PTR(-ENODEV); 1846 } 1847 1848 static inline void securityfs_remove(struct dentry *dentry) 1849 {} 1850 1851 #endif 1852 1853 #ifdef CONFIG_BPF_SYSCALL 1854 union bpf_attr; 1855 struct bpf_map; 1856 struct bpf_prog; 1857 struct bpf_prog_aux; 1858 #ifdef CONFIG_SECURITY 1859 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1860 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1861 extern int security_bpf_prog(struct bpf_prog *prog); 1862 extern int security_bpf_map_alloc(struct bpf_map *map); 1863 extern void security_bpf_map_free(struct bpf_map *map); 1864 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1865 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1866 #else 1867 static inline int security_bpf(int cmd, union bpf_attr *attr, 1868 unsigned int size) 1869 { 1870 return 0; 1871 } 1872 1873 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1874 { 1875 return 0; 1876 } 1877 1878 static inline int security_bpf_prog(struct bpf_prog *prog) 1879 { 1880 return 0; 1881 } 1882 1883 static inline int security_bpf_map_alloc(struct bpf_map *map) 1884 { 1885 return 0; 1886 } 1887 1888 static inline void security_bpf_map_free(struct bpf_map *map) 1889 { } 1890 1891 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1892 { 1893 return 0; 1894 } 1895 1896 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1897 { } 1898 #endif /* CONFIG_SECURITY */ 1899 #endif /* CONFIG_BPF_SYSCALL */ 1900 1901 #ifdef CONFIG_PERF_EVENTS 1902 struct perf_event_attr; 1903 struct perf_event; 1904 1905 #ifdef CONFIG_SECURITY 1906 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1907 extern int security_perf_event_alloc(struct perf_event *event); 1908 extern void security_perf_event_free(struct perf_event *event); 1909 extern int security_perf_event_read(struct perf_event *event); 1910 extern int security_perf_event_write(struct perf_event *event); 1911 #else 1912 static inline int security_perf_event_open(struct perf_event_attr *attr, 1913 int type) 1914 { 1915 return 0; 1916 } 1917 1918 static inline int security_perf_event_alloc(struct perf_event *event) 1919 { 1920 return 0; 1921 } 1922 1923 static inline void security_perf_event_free(struct perf_event *event) 1924 { 1925 } 1926 1927 static inline int security_perf_event_read(struct perf_event *event) 1928 { 1929 return 0; 1930 } 1931 1932 static inline int security_perf_event_write(struct perf_event *event) 1933 { 1934 return 0; 1935 } 1936 #endif /* CONFIG_SECURITY */ 1937 #endif /* CONFIG_PERF_EVENTS */ 1938 1939 #endif /* ! __LINUX_SECURITY_H */ 1940