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/kernel_read_file.h> 27 #include <linux/key.h> 28 #include <linux/capability.h> 29 #include <linux/fs.h> 30 #include <linux/slab.h> 31 #include <linux/err.h> 32 #include <linux/string.h> 33 #include <linux/mm.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 struct watch; 61 struct watch_notification; 62 63 /* Default (no) options for the capable function */ 64 #define CAP_OPT_NONE 0x0 65 /* If capable should audit the security request */ 66 #define CAP_OPT_NOAUDIT BIT(1) 67 /* If capable is being called by a setid function */ 68 #define CAP_OPT_INSETID BIT(2) 69 70 /* LSM Agnostic defines for fs_context::lsm_flags */ 71 #define SECURITY_LSM_NATIVE_LABELS 1 72 73 struct ctl_table; 74 struct audit_krule; 75 struct user_namespace; 76 struct timezone; 77 78 enum lsm_event { 79 LSM_POLICY_CHANGE, 80 }; 81 82 /* 83 * These are reasons that can be passed to the security_locked_down() 84 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 85 * ability for userland to modify kernel code) are placed before 86 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 87 * confidentiality (ie, the ability for userland to extract 88 * information from the running kernel that would otherwise be 89 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 90 * 91 * LSM authors should note that the semantics of any given lockdown 92 * reason are not guaranteed to be stable - the same reason may block 93 * one set of features in one kernel release, and a slightly different 94 * set of features in a later kernel release. LSMs that seek to expose 95 * lockdown policy at any level of granularity other than "none", 96 * "integrity" or "confidentiality" are responsible for either 97 * ensuring that they expose a consistent level of functionality to 98 * userland, or ensuring that userland is aware that this is 99 * potentially a moving target. It is easy to misuse this information 100 * in a way that could break userspace. Please be careful not to do 101 * so. 102 * 103 * If you add to this, remember to extend lockdown_reasons in 104 * security/lockdown/lockdown.c. 105 */ 106 enum lockdown_reason { 107 LOCKDOWN_NONE, 108 LOCKDOWN_MODULE_SIGNATURE, 109 LOCKDOWN_DEV_MEM, 110 LOCKDOWN_EFI_TEST, 111 LOCKDOWN_KEXEC, 112 LOCKDOWN_HIBERNATION, 113 LOCKDOWN_PCI_ACCESS, 114 LOCKDOWN_IOPORT, 115 LOCKDOWN_MSR, 116 LOCKDOWN_ACPI_TABLES, 117 LOCKDOWN_PCMCIA_CIS, 118 LOCKDOWN_TIOCSSERIAL, 119 LOCKDOWN_MODULE_PARAMETERS, 120 LOCKDOWN_MMIOTRACE, 121 LOCKDOWN_DEBUGFS, 122 LOCKDOWN_XMON_WR, 123 LOCKDOWN_INTEGRITY_MAX, 124 LOCKDOWN_KCORE, 125 LOCKDOWN_KPROBES, 126 LOCKDOWN_BPF_READ, 127 LOCKDOWN_PERF, 128 LOCKDOWN_TRACEFS, 129 LOCKDOWN_XMON_RW, 130 LOCKDOWN_XFRM_SECRET, 131 LOCKDOWN_CONFIDENTIALITY_MAX, 132 }; 133 134 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 135 136 /* These functions are in security/commoncap.c */ 137 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 138 int cap, unsigned int opts); 139 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 140 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 141 extern int cap_ptrace_traceme(struct task_struct *parent); 142 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 143 extern int cap_capset(struct cred *new, const struct cred *old, 144 const kernel_cap_t *effective, 145 const kernel_cap_t *inheritable, 146 const kernel_cap_t *permitted); 147 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 148 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 149 const void *value, size_t size, int flags); 150 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 151 extern int cap_inode_need_killpriv(struct dentry *dentry); 152 extern int cap_inode_killpriv(struct dentry *dentry); 153 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 154 void **buffer, bool alloc); 155 extern int cap_mmap_addr(unsigned long addr); 156 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 157 unsigned long prot, unsigned long flags); 158 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 159 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 160 unsigned long arg4, unsigned long arg5); 161 extern int cap_task_setscheduler(struct task_struct *p); 162 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 163 extern int cap_task_setnice(struct task_struct *p, int nice); 164 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 165 166 struct msghdr; 167 struct sk_buff; 168 struct sock; 169 struct sockaddr; 170 struct socket; 171 struct flowi; 172 struct dst_entry; 173 struct xfrm_selector; 174 struct xfrm_policy; 175 struct xfrm_state; 176 struct xfrm_user_sec_ctx; 177 struct seq_file; 178 struct sctp_endpoint; 179 180 #ifdef CONFIG_MMU 181 extern unsigned long mmap_min_addr; 182 extern unsigned long dac_mmap_min_addr; 183 #else 184 #define mmap_min_addr 0UL 185 #define dac_mmap_min_addr 0UL 186 #endif 187 188 /* 189 * Values used in the task_security_ops calls 190 */ 191 /* setuid or setgid, id0 == uid or gid */ 192 #define LSM_SETID_ID 1 193 194 /* setreuid or setregid, id0 == real, id1 == eff */ 195 #define LSM_SETID_RE 2 196 197 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 198 #define LSM_SETID_RES 4 199 200 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 201 #define LSM_SETID_FS 8 202 203 /* Flags for security_task_prlimit(). */ 204 #define LSM_PRLIMIT_READ 1 205 #define LSM_PRLIMIT_WRITE 2 206 207 /* forward declares to avoid warnings */ 208 struct sched_param; 209 struct request_sock; 210 211 /* bprm->unsafe reasons */ 212 #define LSM_UNSAFE_SHARE 1 213 #define LSM_UNSAFE_PTRACE 2 214 #define LSM_UNSAFE_NO_NEW_PRIVS 4 215 216 #ifdef CONFIG_MMU 217 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 218 void *buffer, size_t *lenp, loff_t *ppos); 219 #endif 220 221 /* security_inode_init_security callback function to write xattrs */ 222 typedef int (*initxattrs) (struct inode *inode, 223 const struct xattr *xattr_array, void *fs_data); 224 225 226 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 227 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 228 #define __data_id_stringify(dummy, str) #str, 229 230 enum kernel_load_data_id { 231 __kernel_read_file_id(__data_id_enumify) 232 }; 233 234 static const char * const kernel_load_data_str[] = { 235 __kernel_read_file_id(__data_id_stringify) 236 }; 237 238 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 239 { 240 if ((unsigned)id >= LOADING_MAX_ID) 241 return kernel_load_data_str[LOADING_UNKNOWN]; 242 243 return kernel_load_data_str[id]; 244 } 245 246 #ifdef CONFIG_SECURITY 247 248 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 249 int register_blocking_lsm_notifier(struct notifier_block *nb); 250 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 251 252 /* prototypes */ 253 extern int security_init(void); 254 extern int early_security_init(void); 255 256 /* Security operations */ 257 int security_binder_set_context_mgr(struct task_struct *mgr); 258 int security_binder_transaction(struct task_struct *from, 259 struct task_struct *to); 260 int security_binder_transfer_binder(struct task_struct *from, 261 struct task_struct *to); 262 int security_binder_transfer_file(struct task_struct *from, 263 struct task_struct *to, struct file *file); 264 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 265 int security_ptrace_traceme(struct task_struct *parent); 266 int security_capget(struct task_struct *target, 267 kernel_cap_t *effective, 268 kernel_cap_t *inheritable, 269 kernel_cap_t *permitted); 270 int security_capset(struct cred *new, const struct cred *old, 271 const kernel_cap_t *effective, 272 const kernel_cap_t *inheritable, 273 const kernel_cap_t *permitted); 274 int security_capable(const struct cred *cred, 275 struct user_namespace *ns, 276 int cap, 277 unsigned int opts); 278 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 279 int security_quota_on(struct dentry *dentry); 280 int security_syslog(int type); 281 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 282 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 283 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 284 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 285 int security_bprm_check(struct linux_binprm *bprm); 286 void security_bprm_committing_creds(struct linux_binprm *bprm); 287 void security_bprm_committed_creds(struct linux_binprm *bprm); 288 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 289 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 290 int security_sb_alloc(struct super_block *sb); 291 void security_sb_free(struct super_block *sb); 292 void security_free_mnt_opts(void **mnt_opts); 293 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 294 int security_sb_remount(struct super_block *sb, void *mnt_opts); 295 int security_sb_kern_mount(struct super_block *sb); 296 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 297 int security_sb_statfs(struct dentry *dentry); 298 int security_sb_mount(const char *dev_name, const struct path *path, 299 const char *type, unsigned long flags, void *data); 300 int security_sb_umount(struct vfsmount *mnt, int flags); 301 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 302 int security_sb_set_mnt_opts(struct super_block *sb, 303 void *mnt_opts, 304 unsigned long kern_flags, 305 unsigned long *set_kern_flags); 306 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 307 struct super_block *newsb, 308 unsigned long kern_flags, 309 unsigned long *set_kern_flags); 310 int security_add_mnt_opt(const char *option, const char *val, 311 int len, void **mnt_opts); 312 int security_move_mount(const struct path *from_path, const struct path *to_path); 313 int security_dentry_init_security(struct dentry *dentry, int mode, 314 const struct qstr *name, void **ctx, 315 u32 *ctxlen); 316 int security_dentry_create_files_as(struct dentry *dentry, int mode, 317 struct qstr *name, 318 const struct cred *old, 319 struct cred *new); 320 int security_path_notify(const struct path *path, u64 mask, 321 unsigned int obj_type); 322 int security_inode_alloc(struct inode *inode); 323 void security_inode_free(struct inode *inode); 324 int security_inode_init_security(struct inode *inode, struct inode *dir, 325 const struct qstr *qstr, 326 initxattrs initxattrs, void *fs_data); 327 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 328 const struct qstr *qstr, const char **name, 329 void **value, size_t *len); 330 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 331 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 332 struct dentry *new_dentry); 333 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 334 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 335 const char *old_name); 336 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 337 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 338 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 339 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 340 struct inode *new_dir, struct dentry *new_dentry, 341 unsigned int flags); 342 int security_inode_readlink(struct dentry *dentry); 343 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 344 bool rcu); 345 int security_inode_permission(struct inode *inode, int mask); 346 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 347 int security_inode_getattr(const struct path *path); 348 int security_inode_setxattr(struct dentry *dentry, const char *name, 349 const void *value, size_t size, int flags); 350 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 351 const void *value, size_t size, int flags); 352 int security_inode_getxattr(struct dentry *dentry, const char *name); 353 int security_inode_listxattr(struct dentry *dentry); 354 int security_inode_removexattr(struct dentry *dentry, const char *name); 355 int security_inode_need_killpriv(struct dentry *dentry); 356 int security_inode_killpriv(struct dentry *dentry); 357 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 358 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 359 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 360 void security_inode_getsecid(struct inode *inode, u32 *secid); 361 int security_inode_copy_up(struct dentry *src, struct cred **new); 362 int security_inode_copy_up_xattr(const char *name); 363 int security_kernfs_init_security(struct kernfs_node *kn_dir, 364 struct kernfs_node *kn); 365 int security_file_permission(struct file *file, int mask); 366 int security_file_alloc(struct file *file); 367 void security_file_free(struct file *file); 368 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 369 int security_mmap_file(struct file *file, unsigned long prot, 370 unsigned long flags); 371 int security_mmap_addr(unsigned long addr); 372 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 373 unsigned long prot); 374 int security_file_lock(struct file *file, unsigned int cmd); 375 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 376 void security_file_set_fowner(struct file *file); 377 int security_file_send_sigiotask(struct task_struct *tsk, 378 struct fown_struct *fown, int sig); 379 int security_file_receive(struct file *file); 380 int security_file_open(struct file *file); 381 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 382 void security_task_free(struct task_struct *task); 383 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 384 void security_cred_free(struct cred *cred); 385 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 386 void security_transfer_creds(struct cred *new, const struct cred *old); 387 void security_cred_getsecid(const struct cred *c, u32 *secid); 388 int security_kernel_act_as(struct cred *new, u32 secid); 389 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 390 int security_kernel_module_request(char *kmod_name); 391 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 392 int security_kernel_post_load_data(char *buf, loff_t size, 393 enum kernel_load_data_id id, 394 char *description); 395 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 396 bool contents); 397 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 398 enum kernel_read_file_id id); 399 int security_task_fix_setuid(struct cred *new, const struct cred *old, 400 int flags); 401 int security_task_fix_setgid(struct cred *new, const struct cred *old, 402 int flags); 403 int security_task_setpgid(struct task_struct *p, pid_t pgid); 404 int security_task_getpgid(struct task_struct *p); 405 int security_task_getsid(struct task_struct *p); 406 void security_task_getsecid(struct task_struct *p, u32 *secid); 407 int security_task_setnice(struct task_struct *p, int nice); 408 int security_task_setioprio(struct task_struct *p, int ioprio); 409 int security_task_getioprio(struct task_struct *p); 410 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 411 unsigned int flags); 412 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 413 struct rlimit *new_rlim); 414 int security_task_setscheduler(struct task_struct *p); 415 int security_task_getscheduler(struct task_struct *p); 416 int security_task_movememory(struct task_struct *p); 417 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 418 int sig, const struct cred *cred); 419 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 420 unsigned long arg4, unsigned long arg5); 421 void security_task_to_inode(struct task_struct *p, struct inode *inode); 422 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 423 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 424 int security_msg_msg_alloc(struct msg_msg *msg); 425 void security_msg_msg_free(struct msg_msg *msg); 426 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 427 void security_msg_queue_free(struct kern_ipc_perm *msq); 428 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 429 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 430 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 431 struct msg_msg *msg, int msqflg); 432 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 433 struct task_struct *target, long type, int mode); 434 int security_shm_alloc(struct kern_ipc_perm *shp); 435 void security_shm_free(struct kern_ipc_perm *shp); 436 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 437 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 438 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 439 int security_sem_alloc(struct kern_ipc_perm *sma); 440 void security_sem_free(struct kern_ipc_perm *sma); 441 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 442 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 443 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 444 unsigned nsops, int alter); 445 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 446 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 447 char **value); 448 int security_setprocattr(const char *lsm, const char *name, void *value, 449 size_t size); 450 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 451 int security_ismaclabel(const char *name); 452 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 453 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 454 void security_release_secctx(char *secdata, u32 seclen); 455 void security_inode_invalidate_secctx(struct inode *inode); 456 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 457 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 458 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 459 int security_locked_down(enum lockdown_reason what); 460 #else /* CONFIG_SECURITY */ 461 462 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 463 { 464 return 0; 465 } 466 467 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 468 { 469 return 0; 470 } 471 472 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 473 { 474 return 0; 475 } 476 477 static inline void security_free_mnt_opts(void **mnt_opts) 478 { 479 } 480 481 /* 482 * This is the default capabilities functionality. Most of these functions 483 * are just stubbed out, but a few must call the proper capable code. 484 */ 485 486 static inline int security_init(void) 487 { 488 return 0; 489 } 490 491 static inline int early_security_init(void) 492 { 493 return 0; 494 } 495 496 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 497 { 498 return 0; 499 } 500 501 static inline int security_binder_transaction(struct task_struct *from, 502 struct task_struct *to) 503 { 504 return 0; 505 } 506 507 static inline int security_binder_transfer_binder(struct task_struct *from, 508 struct task_struct *to) 509 { 510 return 0; 511 } 512 513 static inline int security_binder_transfer_file(struct task_struct *from, 514 struct task_struct *to, 515 struct file *file) 516 { 517 return 0; 518 } 519 520 static inline int security_ptrace_access_check(struct task_struct *child, 521 unsigned int mode) 522 { 523 return cap_ptrace_access_check(child, mode); 524 } 525 526 static inline int security_ptrace_traceme(struct task_struct *parent) 527 { 528 return cap_ptrace_traceme(parent); 529 } 530 531 static inline int security_capget(struct task_struct *target, 532 kernel_cap_t *effective, 533 kernel_cap_t *inheritable, 534 kernel_cap_t *permitted) 535 { 536 return cap_capget(target, effective, inheritable, permitted); 537 } 538 539 static inline int security_capset(struct cred *new, 540 const struct cred *old, 541 const kernel_cap_t *effective, 542 const kernel_cap_t *inheritable, 543 const kernel_cap_t *permitted) 544 { 545 return cap_capset(new, old, effective, inheritable, permitted); 546 } 547 548 static inline int security_capable(const struct cred *cred, 549 struct user_namespace *ns, 550 int cap, 551 unsigned int opts) 552 { 553 return cap_capable(cred, ns, cap, opts); 554 } 555 556 static inline int security_quotactl(int cmds, int type, int id, 557 struct super_block *sb) 558 { 559 return 0; 560 } 561 562 static inline int security_quota_on(struct dentry *dentry) 563 { 564 return 0; 565 } 566 567 static inline int security_syslog(int type) 568 { 569 return 0; 570 } 571 572 static inline int security_settime64(const struct timespec64 *ts, 573 const struct timezone *tz) 574 { 575 return cap_settime(ts, tz); 576 } 577 578 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 579 { 580 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 581 } 582 583 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 584 { 585 return 0; 586 } 587 588 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 589 struct file *file) 590 { 591 return cap_bprm_creds_from_file(bprm, file); 592 } 593 594 static inline int security_bprm_check(struct linux_binprm *bprm) 595 { 596 return 0; 597 } 598 599 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 600 { 601 } 602 603 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 604 { 605 } 606 607 static inline int security_fs_context_dup(struct fs_context *fc, 608 struct fs_context *src_fc) 609 { 610 return 0; 611 } 612 static inline int security_fs_context_parse_param(struct fs_context *fc, 613 struct fs_parameter *param) 614 { 615 return -ENOPARAM; 616 } 617 618 static inline int security_sb_alloc(struct super_block *sb) 619 { 620 return 0; 621 } 622 623 static inline void security_sb_free(struct super_block *sb) 624 { } 625 626 static inline int security_sb_eat_lsm_opts(char *options, 627 void **mnt_opts) 628 { 629 return 0; 630 } 631 632 static inline int security_sb_remount(struct super_block *sb, 633 void *mnt_opts) 634 { 635 return 0; 636 } 637 638 static inline int security_sb_kern_mount(struct super_block *sb) 639 { 640 return 0; 641 } 642 643 static inline int security_sb_show_options(struct seq_file *m, 644 struct super_block *sb) 645 { 646 return 0; 647 } 648 649 static inline int security_sb_statfs(struct dentry *dentry) 650 { 651 return 0; 652 } 653 654 static inline int security_sb_mount(const char *dev_name, const struct path *path, 655 const char *type, unsigned long flags, 656 void *data) 657 { 658 return 0; 659 } 660 661 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 662 { 663 return 0; 664 } 665 666 static inline int security_sb_pivotroot(const struct path *old_path, 667 const struct path *new_path) 668 { 669 return 0; 670 } 671 672 static inline int security_sb_set_mnt_opts(struct super_block *sb, 673 void *mnt_opts, 674 unsigned long kern_flags, 675 unsigned long *set_kern_flags) 676 { 677 return 0; 678 } 679 680 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 681 struct super_block *newsb, 682 unsigned long kern_flags, 683 unsigned long *set_kern_flags) 684 { 685 return 0; 686 } 687 688 static inline int security_add_mnt_opt(const char *option, const char *val, 689 int len, void **mnt_opts) 690 { 691 return 0; 692 } 693 694 static inline int security_move_mount(const struct path *from_path, 695 const struct path *to_path) 696 { 697 return 0; 698 } 699 700 static inline int security_path_notify(const struct path *path, u64 mask, 701 unsigned int obj_type) 702 { 703 return 0; 704 } 705 706 static inline int security_inode_alloc(struct inode *inode) 707 { 708 return 0; 709 } 710 711 static inline void security_inode_free(struct inode *inode) 712 { } 713 714 static inline int security_dentry_init_security(struct dentry *dentry, 715 int mode, 716 const struct qstr *name, 717 void **ctx, 718 u32 *ctxlen) 719 { 720 return -EOPNOTSUPP; 721 } 722 723 static inline int security_dentry_create_files_as(struct dentry *dentry, 724 int mode, struct qstr *name, 725 const struct cred *old, 726 struct cred *new) 727 { 728 return 0; 729 } 730 731 732 static inline int security_inode_init_security(struct inode *inode, 733 struct inode *dir, 734 const struct qstr *qstr, 735 const initxattrs xattrs, 736 void *fs_data) 737 { 738 return 0; 739 } 740 741 static inline int security_old_inode_init_security(struct inode *inode, 742 struct inode *dir, 743 const struct qstr *qstr, 744 const char **name, 745 void **value, size_t *len) 746 { 747 return -EOPNOTSUPP; 748 } 749 750 static inline int security_inode_create(struct inode *dir, 751 struct dentry *dentry, 752 umode_t mode) 753 { 754 return 0; 755 } 756 757 static inline int security_inode_link(struct dentry *old_dentry, 758 struct inode *dir, 759 struct dentry *new_dentry) 760 { 761 return 0; 762 } 763 764 static inline int security_inode_unlink(struct inode *dir, 765 struct dentry *dentry) 766 { 767 return 0; 768 } 769 770 static inline int security_inode_symlink(struct inode *dir, 771 struct dentry *dentry, 772 const char *old_name) 773 { 774 return 0; 775 } 776 777 static inline int security_inode_mkdir(struct inode *dir, 778 struct dentry *dentry, 779 int mode) 780 { 781 return 0; 782 } 783 784 static inline int security_inode_rmdir(struct inode *dir, 785 struct dentry *dentry) 786 { 787 return 0; 788 } 789 790 static inline int security_inode_mknod(struct inode *dir, 791 struct dentry *dentry, 792 int mode, dev_t dev) 793 { 794 return 0; 795 } 796 797 static inline int security_inode_rename(struct inode *old_dir, 798 struct dentry *old_dentry, 799 struct inode *new_dir, 800 struct dentry *new_dentry, 801 unsigned int flags) 802 { 803 return 0; 804 } 805 806 static inline int security_inode_readlink(struct dentry *dentry) 807 { 808 return 0; 809 } 810 811 static inline int security_inode_follow_link(struct dentry *dentry, 812 struct inode *inode, 813 bool rcu) 814 { 815 return 0; 816 } 817 818 static inline int security_inode_permission(struct inode *inode, int mask) 819 { 820 return 0; 821 } 822 823 static inline int security_inode_setattr(struct dentry *dentry, 824 struct iattr *attr) 825 { 826 return 0; 827 } 828 829 static inline int security_inode_getattr(const struct path *path) 830 { 831 return 0; 832 } 833 834 static inline int security_inode_setxattr(struct dentry *dentry, 835 const char *name, const void *value, size_t size, int flags) 836 { 837 return cap_inode_setxattr(dentry, name, value, size, flags); 838 } 839 840 static inline void security_inode_post_setxattr(struct dentry *dentry, 841 const char *name, const void *value, size_t size, int flags) 842 { } 843 844 static inline int security_inode_getxattr(struct dentry *dentry, 845 const char *name) 846 { 847 return 0; 848 } 849 850 static inline int security_inode_listxattr(struct dentry *dentry) 851 { 852 return 0; 853 } 854 855 static inline int security_inode_removexattr(struct dentry *dentry, 856 const char *name) 857 { 858 return cap_inode_removexattr(dentry, name); 859 } 860 861 static inline int security_inode_need_killpriv(struct dentry *dentry) 862 { 863 return cap_inode_need_killpriv(dentry); 864 } 865 866 static inline int security_inode_killpriv(struct dentry *dentry) 867 { 868 return cap_inode_killpriv(dentry); 869 } 870 871 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 872 { 873 return cap_inode_getsecurity(inode, name, buffer, alloc); 874 } 875 876 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 877 { 878 return -EOPNOTSUPP; 879 } 880 881 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 882 { 883 return 0; 884 } 885 886 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 887 { 888 *secid = 0; 889 } 890 891 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 892 { 893 return 0; 894 } 895 896 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 897 struct kernfs_node *kn) 898 { 899 return 0; 900 } 901 902 static inline int security_inode_copy_up_xattr(const char *name) 903 { 904 return -EOPNOTSUPP; 905 } 906 907 static inline int security_file_permission(struct file *file, int mask) 908 { 909 return 0; 910 } 911 912 static inline int security_file_alloc(struct file *file) 913 { 914 return 0; 915 } 916 917 static inline void security_file_free(struct file *file) 918 { } 919 920 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 921 unsigned long arg) 922 { 923 return 0; 924 } 925 926 static inline int security_mmap_file(struct file *file, unsigned long prot, 927 unsigned long flags) 928 { 929 return 0; 930 } 931 932 static inline int security_mmap_addr(unsigned long addr) 933 { 934 return cap_mmap_addr(addr); 935 } 936 937 static inline int security_file_mprotect(struct vm_area_struct *vma, 938 unsigned long reqprot, 939 unsigned long prot) 940 { 941 return 0; 942 } 943 944 static inline int security_file_lock(struct file *file, unsigned int cmd) 945 { 946 return 0; 947 } 948 949 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 950 unsigned long arg) 951 { 952 return 0; 953 } 954 955 static inline void security_file_set_fowner(struct file *file) 956 { 957 return; 958 } 959 960 static inline int security_file_send_sigiotask(struct task_struct *tsk, 961 struct fown_struct *fown, 962 int sig) 963 { 964 return 0; 965 } 966 967 static inline int security_file_receive(struct file *file) 968 { 969 return 0; 970 } 971 972 static inline int security_file_open(struct file *file) 973 { 974 return 0; 975 } 976 977 static inline int security_task_alloc(struct task_struct *task, 978 unsigned long clone_flags) 979 { 980 return 0; 981 } 982 983 static inline void security_task_free(struct task_struct *task) 984 { } 985 986 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 987 { 988 return 0; 989 } 990 991 static inline void security_cred_free(struct cred *cred) 992 { } 993 994 static inline int security_prepare_creds(struct cred *new, 995 const struct cred *old, 996 gfp_t gfp) 997 { 998 return 0; 999 } 1000 1001 static inline void security_transfer_creds(struct cred *new, 1002 const struct cred *old) 1003 { 1004 } 1005 1006 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1007 { 1008 return 0; 1009 } 1010 1011 static inline int security_kernel_create_files_as(struct cred *cred, 1012 struct inode *inode) 1013 { 1014 return 0; 1015 } 1016 1017 static inline int security_kernel_module_request(char *kmod_name) 1018 { 1019 return 0; 1020 } 1021 1022 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1023 { 1024 return 0; 1025 } 1026 1027 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1028 enum kernel_load_data_id id, 1029 char *description) 1030 { 1031 return 0; 1032 } 1033 1034 static inline int security_kernel_read_file(struct file *file, 1035 enum kernel_read_file_id id, 1036 bool contents) 1037 { 1038 return 0; 1039 } 1040 1041 static inline int security_kernel_post_read_file(struct file *file, 1042 char *buf, loff_t size, 1043 enum kernel_read_file_id id) 1044 { 1045 return 0; 1046 } 1047 1048 static inline int security_task_fix_setuid(struct cred *new, 1049 const struct cred *old, 1050 int flags) 1051 { 1052 return cap_task_fix_setuid(new, old, flags); 1053 } 1054 1055 static inline int security_task_fix_setgid(struct cred *new, 1056 const struct cred *old, 1057 int flags) 1058 { 1059 return 0; 1060 } 1061 1062 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1063 { 1064 return 0; 1065 } 1066 1067 static inline int security_task_getpgid(struct task_struct *p) 1068 { 1069 return 0; 1070 } 1071 1072 static inline int security_task_getsid(struct task_struct *p) 1073 { 1074 return 0; 1075 } 1076 1077 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1078 { 1079 *secid = 0; 1080 } 1081 1082 static inline int security_task_setnice(struct task_struct *p, int nice) 1083 { 1084 return cap_task_setnice(p, nice); 1085 } 1086 1087 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1088 { 1089 return cap_task_setioprio(p, ioprio); 1090 } 1091 1092 static inline int security_task_getioprio(struct task_struct *p) 1093 { 1094 return 0; 1095 } 1096 1097 static inline int security_task_prlimit(const struct cred *cred, 1098 const struct cred *tcred, 1099 unsigned int flags) 1100 { 1101 return 0; 1102 } 1103 1104 static inline int security_task_setrlimit(struct task_struct *p, 1105 unsigned int resource, 1106 struct rlimit *new_rlim) 1107 { 1108 return 0; 1109 } 1110 1111 static inline int security_task_setscheduler(struct task_struct *p) 1112 { 1113 return cap_task_setscheduler(p); 1114 } 1115 1116 static inline int security_task_getscheduler(struct task_struct *p) 1117 { 1118 return 0; 1119 } 1120 1121 static inline int security_task_movememory(struct task_struct *p) 1122 { 1123 return 0; 1124 } 1125 1126 static inline int security_task_kill(struct task_struct *p, 1127 struct kernel_siginfo *info, int sig, 1128 const struct cred *cred) 1129 { 1130 return 0; 1131 } 1132 1133 static inline int security_task_prctl(int option, unsigned long arg2, 1134 unsigned long arg3, 1135 unsigned long arg4, 1136 unsigned long arg5) 1137 { 1138 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1139 } 1140 1141 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1142 { } 1143 1144 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1145 short flag) 1146 { 1147 return 0; 1148 } 1149 1150 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1151 { 1152 *secid = 0; 1153 } 1154 1155 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1156 { 1157 return 0; 1158 } 1159 1160 static inline void security_msg_msg_free(struct msg_msg *msg) 1161 { } 1162 1163 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1164 { 1165 return 0; 1166 } 1167 1168 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1169 { } 1170 1171 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1172 int msqflg) 1173 { 1174 return 0; 1175 } 1176 1177 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1178 { 1179 return 0; 1180 } 1181 1182 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1183 struct msg_msg *msg, int msqflg) 1184 { 1185 return 0; 1186 } 1187 1188 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1189 struct msg_msg *msg, 1190 struct task_struct *target, 1191 long type, int mode) 1192 { 1193 return 0; 1194 } 1195 1196 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1197 { 1198 return 0; 1199 } 1200 1201 static inline void security_shm_free(struct kern_ipc_perm *shp) 1202 { } 1203 1204 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1205 int shmflg) 1206 { 1207 return 0; 1208 } 1209 1210 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1211 { 1212 return 0; 1213 } 1214 1215 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1216 char __user *shmaddr, int shmflg) 1217 { 1218 return 0; 1219 } 1220 1221 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1222 { 1223 return 0; 1224 } 1225 1226 static inline void security_sem_free(struct kern_ipc_perm *sma) 1227 { } 1228 1229 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1230 { 1231 return 0; 1232 } 1233 1234 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1235 { 1236 return 0; 1237 } 1238 1239 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1240 struct sembuf *sops, unsigned nsops, 1241 int alter) 1242 { 1243 return 0; 1244 } 1245 1246 static inline void security_d_instantiate(struct dentry *dentry, 1247 struct inode *inode) 1248 { } 1249 1250 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1251 char *name, char **value) 1252 { 1253 return -EINVAL; 1254 } 1255 1256 static inline int security_setprocattr(const char *lsm, char *name, 1257 void *value, size_t size) 1258 { 1259 return -EINVAL; 1260 } 1261 1262 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1263 { 1264 return 0; 1265 } 1266 1267 static inline int security_ismaclabel(const char *name) 1268 { 1269 return 0; 1270 } 1271 1272 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1273 { 1274 return -EOPNOTSUPP; 1275 } 1276 1277 static inline int security_secctx_to_secid(const char *secdata, 1278 u32 seclen, 1279 u32 *secid) 1280 { 1281 return -EOPNOTSUPP; 1282 } 1283 1284 static inline void security_release_secctx(char *secdata, u32 seclen) 1285 { 1286 } 1287 1288 static inline void security_inode_invalidate_secctx(struct inode *inode) 1289 { 1290 } 1291 1292 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1293 { 1294 return -EOPNOTSUPP; 1295 } 1296 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1297 { 1298 return -EOPNOTSUPP; 1299 } 1300 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1301 { 1302 return -EOPNOTSUPP; 1303 } 1304 static inline int security_locked_down(enum lockdown_reason what) 1305 { 1306 return 0; 1307 } 1308 #endif /* CONFIG_SECURITY */ 1309 1310 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1311 int security_post_notification(const struct cred *w_cred, 1312 const struct cred *cred, 1313 struct watch_notification *n); 1314 #else 1315 static inline int security_post_notification(const struct cred *w_cred, 1316 const struct cred *cred, 1317 struct watch_notification *n) 1318 { 1319 return 0; 1320 } 1321 #endif 1322 1323 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1324 int security_watch_key(struct key *key); 1325 #else 1326 static inline int security_watch_key(struct key *key) 1327 { 1328 return 0; 1329 } 1330 #endif 1331 1332 #ifdef CONFIG_SECURITY_NETWORK 1333 1334 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1335 int security_unix_may_send(struct socket *sock, struct socket *other); 1336 int security_socket_create(int family, int type, int protocol, int kern); 1337 int security_socket_post_create(struct socket *sock, int family, 1338 int type, int protocol, int kern); 1339 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1340 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1341 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1342 int security_socket_listen(struct socket *sock, int backlog); 1343 int security_socket_accept(struct socket *sock, struct socket *newsock); 1344 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1345 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1346 int size, int flags); 1347 int security_socket_getsockname(struct socket *sock); 1348 int security_socket_getpeername(struct socket *sock); 1349 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1350 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1351 int security_socket_shutdown(struct socket *sock, int how); 1352 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1353 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1354 int __user *optlen, unsigned len); 1355 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1356 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1357 void security_sk_free(struct sock *sk); 1358 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1359 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1360 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1361 void security_sock_graft(struct sock*sk, struct socket *parent); 1362 int security_inet_conn_request(const struct sock *sk, 1363 struct sk_buff *skb, struct request_sock *req); 1364 void security_inet_csk_clone(struct sock *newsk, 1365 const struct request_sock *req); 1366 void security_inet_conn_established(struct sock *sk, 1367 struct sk_buff *skb); 1368 int security_secmark_relabel_packet(u32 secid); 1369 void security_secmark_refcount_inc(void); 1370 void security_secmark_refcount_dec(void); 1371 int security_tun_dev_alloc_security(void **security); 1372 void security_tun_dev_free_security(void *security); 1373 int security_tun_dev_create(void); 1374 int security_tun_dev_attach_queue(void *security); 1375 int security_tun_dev_attach(struct sock *sk, void *security); 1376 int security_tun_dev_open(void *security); 1377 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1378 int security_sctp_bind_connect(struct sock *sk, int optname, 1379 struct sockaddr *address, int addrlen); 1380 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1381 struct sock *newsk); 1382 1383 #else /* CONFIG_SECURITY_NETWORK */ 1384 static inline int security_unix_stream_connect(struct sock *sock, 1385 struct sock *other, 1386 struct sock *newsk) 1387 { 1388 return 0; 1389 } 1390 1391 static inline int security_unix_may_send(struct socket *sock, 1392 struct socket *other) 1393 { 1394 return 0; 1395 } 1396 1397 static inline int security_socket_create(int family, int type, 1398 int protocol, int kern) 1399 { 1400 return 0; 1401 } 1402 1403 static inline int security_socket_post_create(struct socket *sock, 1404 int family, 1405 int type, 1406 int protocol, int kern) 1407 { 1408 return 0; 1409 } 1410 1411 static inline int security_socket_socketpair(struct socket *socka, 1412 struct socket *sockb) 1413 { 1414 return 0; 1415 } 1416 1417 static inline int security_socket_bind(struct socket *sock, 1418 struct sockaddr *address, 1419 int addrlen) 1420 { 1421 return 0; 1422 } 1423 1424 static inline int security_socket_connect(struct socket *sock, 1425 struct sockaddr *address, 1426 int addrlen) 1427 { 1428 return 0; 1429 } 1430 1431 static inline int security_socket_listen(struct socket *sock, int backlog) 1432 { 1433 return 0; 1434 } 1435 1436 static inline int security_socket_accept(struct socket *sock, 1437 struct socket *newsock) 1438 { 1439 return 0; 1440 } 1441 1442 static inline int security_socket_sendmsg(struct socket *sock, 1443 struct msghdr *msg, int size) 1444 { 1445 return 0; 1446 } 1447 1448 static inline int security_socket_recvmsg(struct socket *sock, 1449 struct msghdr *msg, int size, 1450 int flags) 1451 { 1452 return 0; 1453 } 1454 1455 static inline int security_socket_getsockname(struct socket *sock) 1456 { 1457 return 0; 1458 } 1459 1460 static inline int security_socket_getpeername(struct socket *sock) 1461 { 1462 return 0; 1463 } 1464 1465 static inline int security_socket_getsockopt(struct socket *sock, 1466 int level, int optname) 1467 { 1468 return 0; 1469 } 1470 1471 static inline int security_socket_setsockopt(struct socket *sock, 1472 int level, int optname) 1473 { 1474 return 0; 1475 } 1476 1477 static inline int security_socket_shutdown(struct socket *sock, int how) 1478 { 1479 return 0; 1480 } 1481 static inline int security_sock_rcv_skb(struct sock *sk, 1482 struct sk_buff *skb) 1483 { 1484 return 0; 1485 } 1486 1487 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1488 int __user *optlen, unsigned len) 1489 { 1490 return -ENOPROTOOPT; 1491 } 1492 1493 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1494 { 1495 return -ENOPROTOOPT; 1496 } 1497 1498 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1499 { 1500 return 0; 1501 } 1502 1503 static inline void security_sk_free(struct sock *sk) 1504 { 1505 } 1506 1507 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1508 { 1509 } 1510 1511 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1512 { 1513 } 1514 1515 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1516 { 1517 } 1518 1519 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1520 { 1521 } 1522 1523 static inline int security_inet_conn_request(const struct sock *sk, 1524 struct sk_buff *skb, struct request_sock *req) 1525 { 1526 return 0; 1527 } 1528 1529 static inline void security_inet_csk_clone(struct sock *newsk, 1530 const struct request_sock *req) 1531 { 1532 } 1533 1534 static inline void security_inet_conn_established(struct sock *sk, 1535 struct sk_buff *skb) 1536 { 1537 } 1538 1539 static inline int security_secmark_relabel_packet(u32 secid) 1540 { 1541 return 0; 1542 } 1543 1544 static inline void security_secmark_refcount_inc(void) 1545 { 1546 } 1547 1548 static inline void security_secmark_refcount_dec(void) 1549 { 1550 } 1551 1552 static inline int security_tun_dev_alloc_security(void **security) 1553 { 1554 return 0; 1555 } 1556 1557 static inline void security_tun_dev_free_security(void *security) 1558 { 1559 } 1560 1561 static inline int security_tun_dev_create(void) 1562 { 1563 return 0; 1564 } 1565 1566 static inline int security_tun_dev_attach_queue(void *security) 1567 { 1568 return 0; 1569 } 1570 1571 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1572 { 1573 return 0; 1574 } 1575 1576 static inline int security_tun_dev_open(void *security) 1577 { 1578 return 0; 1579 } 1580 1581 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1582 struct sk_buff *skb) 1583 { 1584 return 0; 1585 } 1586 1587 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1588 struct sockaddr *address, 1589 int addrlen) 1590 { 1591 return 0; 1592 } 1593 1594 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1595 struct sock *sk, 1596 struct sock *newsk) 1597 { 1598 } 1599 #endif /* CONFIG_SECURITY_NETWORK */ 1600 1601 #ifdef CONFIG_SECURITY_INFINIBAND 1602 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1603 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1604 int security_ib_alloc_security(void **sec); 1605 void security_ib_free_security(void *sec); 1606 #else /* CONFIG_SECURITY_INFINIBAND */ 1607 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1608 { 1609 return 0; 1610 } 1611 1612 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1613 { 1614 return 0; 1615 } 1616 1617 static inline int security_ib_alloc_security(void **sec) 1618 { 1619 return 0; 1620 } 1621 1622 static inline void security_ib_free_security(void *sec) 1623 { 1624 } 1625 #endif /* CONFIG_SECURITY_INFINIBAND */ 1626 1627 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1628 1629 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1630 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1631 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1632 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1633 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1634 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1635 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1636 struct xfrm_sec_ctx *polsec, u32 secid); 1637 int security_xfrm_state_delete(struct xfrm_state *x); 1638 void security_xfrm_state_free(struct xfrm_state *x); 1639 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1640 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1641 struct xfrm_policy *xp, 1642 const struct flowi *fl); 1643 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1644 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1645 1646 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1647 1648 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1649 struct xfrm_user_sec_ctx *sec_ctx, 1650 gfp_t gfp) 1651 { 1652 return 0; 1653 } 1654 1655 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1656 { 1657 return 0; 1658 } 1659 1660 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1661 { 1662 } 1663 1664 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1665 { 1666 return 0; 1667 } 1668 1669 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1670 struct xfrm_user_sec_ctx *sec_ctx) 1671 { 1672 return 0; 1673 } 1674 1675 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1676 struct xfrm_sec_ctx *polsec, u32 secid) 1677 { 1678 return 0; 1679 } 1680 1681 static inline void security_xfrm_state_free(struct xfrm_state *x) 1682 { 1683 } 1684 1685 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1686 { 1687 return 0; 1688 } 1689 1690 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1691 { 1692 return 0; 1693 } 1694 1695 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1696 struct xfrm_policy *xp, const struct flowi *fl) 1697 { 1698 return 1; 1699 } 1700 1701 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1702 { 1703 return 0; 1704 } 1705 1706 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1707 { 1708 } 1709 1710 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1711 1712 #ifdef CONFIG_SECURITY_PATH 1713 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1714 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1715 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1716 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1717 unsigned int dev); 1718 int security_path_truncate(const struct path *path); 1719 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1720 const char *old_name); 1721 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1722 struct dentry *new_dentry); 1723 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1724 const struct path *new_dir, struct dentry *new_dentry, 1725 unsigned int flags); 1726 int security_path_chmod(const struct path *path, umode_t mode); 1727 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1728 int security_path_chroot(const struct path *path); 1729 #else /* CONFIG_SECURITY_PATH */ 1730 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1731 { 1732 return 0; 1733 } 1734 1735 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1736 umode_t mode) 1737 { 1738 return 0; 1739 } 1740 1741 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1742 { 1743 return 0; 1744 } 1745 1746 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1747 umode_t mode, unsigned int dev) 1748 { 1749 return 0; 1750 } 1751 1752 static inline int security_path_truncate(const struct path *path) 1753 { 1754 return 0; 1755 } 1756 1757 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1758 const char *old_name) 1759 { 1760 return 0; 1761 } 1762 1763 static inline int security_path_link(struct dentry *old_dentry, 1764 const struct path *new_dir, 1765 struct dentry *new_dentry) 1766 { 1767 return 0; 1768 } 1769 1770 static inline int security_path_rename(const struct path *old_dir, 1771 struct dentry *old_dentry, 1772 const struct path *new_dir, 1773 struct dentry *new_dentry, 1774 unsigned int flags) 1775 { 1776 return 0; 1777 } 1778 1779 static inline int security_path_chmod(const struct path *path, umode_t mode) 1780 { 1781 return 0; 1782 } 1783 1784 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1785 { 1786 return 0; 1787 } 1788 1789 static inline int security_path_chroot(const struct path *path) 1790 { 1791 return 0; 1792 } 1793 #endif /* CONFIG_SECURITY_PATH */ 1794 1795 #ifdef CONFIG_KEYS 1796 #ifdef CONFIG_SECURITY 1797 1798 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1799 void security_key_free(struct key *key); 1800 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1801 enum key_need_perm need_perm); 1802 int security_key_getsecurity(struct key *key, char **_buffer); 1803 1804 #else 1805 1806 static inline int security_key_alloc(struct key *key, 1807 const struct cred *cred, 1808 unsigned long flags) 1809 { 1810 return 0; 1811 } 1812 1813 static inline void security_key_free(struct key *key) 1814 { 1815 } 1816 1817 static inline int security_key_permission(key_ref_t key_ref, 1818 const struct cred *cred, 1819 enum key_need_perm need_perm) 1820 { 1821 return 0; 1822 } 1823 1824 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1825 { 1826 *_buffer = NULL; 1827 return 0; 1828 } 1829 1830 #endif 1831 #endif /* CONFIG_KEYS */ 1832 1833 #ifdef CONFIG_AUDIT 1834 #ifdef CONFIG_SECURITY 1835 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1836 int security_audit_rule_known(struct audit_krule *krule); 1837 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1838 void security_audit_rule_free(void *lsmrule); 1839 1840 #else 1841 1842 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1843 void **lsmrule) 1844 { 1845 return 0; 1846 } 1847 1848 static inline int security_audit_rule_known(struct audit_krule *krule) 1849 { 1850 return 0; 1851 } 1852 1853 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1854 void *lsmrule) 1855 { 1856 return 0; 1857 } 1858 1859 static inline void security_audit_rule_free(void *lsmrule) 1860 { } 1861 1862 #endif /* CONFIG_SECURITY */ 1863 #endif /* CONFIG_AUDIT */ 1864 1865 #ifdef CONFIG_SECURITYFS 1866 1867 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1868 struct dentry *parent, void *data, 1869 const struct file_operations *fops); 1870 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1871 struct dentry *securityfs_create_symlink(const char *name, 1872 struct dentry *parent, 1873 const char *target, 1874 const struct inode_operations *iops); 1875 extern void securityfs_remove(struct dentry *dentry); 1876 1877 #else /* CONFIG_SECURITYFS */ 1878 1879 static inline struct dentry *securityfs_create_dir(const char *name, 1880 struct dentry *parent) 1881 { 1882 return ERR_PTR(-ENODEV); 1883 } 1884 1885 static inline struct dentry *securityfs_create_file(const char *name, 1886 umode_t mode, 1887 struct dentry *parent, 1888 void *data, 1889 const struct file_operations *fops) 1890 { 1891 return ERR_PTR(-ENODEV); 1892 } 1893 1894 static inline struct dentry *securityfs_create_symlink(const char *name, 1895 struct dentry *parent, 1896 const char *target, 1897 const struct inode_operations *iops) 1898 { 1899 return ERR_PTR(-ENODEV); 1900 } 1901 1902 static inline void securityfs_remove(struct dentry *dentry) 1903 {} 1904 1905 #endif 1906 1907 #ifdef CONFIG_BPF_SYSCALL 1908 union bpf_attr; 1909 struct bpf_map; 1910 struct bpf_prog; 1911 struct bpf_prog_aux; 1912 #ifdef CONFIG_SECURITY 1913 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1914 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1915 extern int security_bpf_prog(struct bpf_prog *prog); 1916 extern int security_bpf_map_alloc(struct bpf_map *map); 1917 extern void security_bpf_map_free(struct bpf_map *map); 1918 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1919 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1920 #else 1921 static inline int security_bpf(int cmd, union bpf_attr *attr, 1922 unsigned int size) 1923 { 1924 return 0; 1925 } 1926 1927 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1928 { 1929 return 0; 1930 } 1931 1932 static inline int security_bpf_prog(struct bpf_prog *prog) 1933 { 1934 return 0; 1935 } 1936 1937 static inline int security_bpf_map_alloc(struct bpf_map *map) 1938 { 1939 return 0; 1940 } 1941 1942 static inline void security_bpf_map_free(struct bpf_map *map) 1943 { } 1944 1945 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1946 { 1947 return 0; 1948 } 1949 1950 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1951 { } 1952 #endif /* CONFIG_SECURITY */ 1953 #endif /* CONFIG_BPF_SYSCALL */ 1954 1955 #ifdef CONFIG_PERF_EVENTS 1956 struct perf_event_attr; 1957 struct perf_event; 1958 1959 #ifdef CONFIG_SECURITY 1960 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1961 extern int security_perf_event_alloc(struct perf_event *event); 1962 extern void security_perf_event_free(struct perf_event *event); 1963 extern int security_perf_event_read(struct perf_event *event); 1964 extern int security_perf_event_write(struct perf_event *event); 1965 #else 1966 static inline int security_perf_event_open(struct perf_event_attr *attr, 1967 int type) 1968 { 1969 return 0; 1970 } 1971 1972 static inline int security_perf_event_alloc(struct perf_event *event) 1973 { 1974 return 0; 1975 } 1976 1977 static inline void security_perf_event_free(struct perf_event *event) 1978 { 1979 } 1980 1981 static inline int security_perf_event_read(struct perf_event *event) 1982 { 1983 return 0; 1984 } 1985 1986 static inline int security_perf_event_write(struct perf_event *event) 1987 { 1988 return 0; 1989 } 1990 #endif /* CONFIG_SECURITY */ 1991 #endif /* CONFIG_PERF_EVENTS */ 1992 1993 #endif /* ! __LINUX_SECURITY_H */ 1994