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 int cap_inode_setxattr(struct dentry *dentry, const char *name, 149 const void *value, size_t size, int flags); 150 int cap_inode_removexattr(struct user_namespace *mnt_userns, 151 struct dentry *dentry, const char *name); 152 int cap_inode_need_killpriv(struct dentry *dentry); 153 int cap_inode_killpriv(struct user_namespace *mnt_userns, 154 struct dentry *dentry); 155 int cap_inode_getsecurity(struct user_namespace *mnt_userns, 156 struct inode *inode, const char *name, void **buffer, 157 bool alloc); 158 extern int cap_mmap_addr(unsigned long addr); 159 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 160 unsigned long prot, unsigned long flags); 161 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 162 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 163 unsigned long arg4, unsigned long arg5); 164 extern int cap_task_setscheduler(struct task_struct *p); 165 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 166 extern int cap_task_setnice(struct task_struct *p, int nice); 167 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 168 169 struct msghdr; 170 struct sk_buff; 171 struct sock; 172 struct sockaddr; 173 struct socket; 174 struct flowi_common; 175 struct dst_entry; 176 struct xfrm_selector; 177 struct xfrm_policy; 178 struct xfrm_state; 179 struct xfrm_user_sec_ctx; 180 struct seq_file; 181 struct sctp_endpoint; 182 183 #ifdef CONFIG_MMU 184 extern unsigned long mmap_min_addr; 185 extern unsigned long dac_mmap_min_addr; 186 #else 187 #define mmap_min_addr 0UL 188 #define dac_mmap_min_addr 0UL 189 #endif 190 191 /* 192 * Values used in the task_security_ops calls 193 */ 194 /* setuid or setgid, id0 == uid or gid */ 195 #define LSM_SETID_ID 1 196 197 /* setreuid or setregid, id0 == real, id1 == eff */ 198 #define LSM_SETID_RE 2 199 200 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 201 #define LSM_SETID_RES 4 202 203 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 204 #define LSM_SETID_FS 8 205 206 /* Flags for security_task_prlimit(). */ 207 #define LSM_PRLIMIT_READ 1 208 #define LSM_PRLIMIT_WRITE 2 209 210 /* forward declares to avoid warnings */ 211 struct sched_param; 212 struct request_sock; 213 214 /* bprm->unsafe reasons */ 215 #define LSM_UNSAFE_SHARE 1 216 #define LSM_UNSAFE_PTRACE 2 217 #define LSM_UNSAFE_NO_NEW_PRIVS 4 218 219 #ifdef CONFIG_MMU 220 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 221 void *buffer, size_t *lenp, loff_t *ppos); 222 #endif 223 224 /* security_inode_init_security callback function to write xattrs */ 225 typedef int (*initxattrs) (struct inode *inode, 226 const struct xattr *xattr_array, void *fs_data); 227 228 229 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 230 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 231 #define __data_id_stringify(dummy, str) #str, 232 233 enum kernel_load_data_id { 234 __kernel_read_file_id(__data_id_enumify) 235 }; 236 237 static const char * const kernel_load_data_str[] = { 238 __kernel_read_file_id(__data_id_stringify) 239 }; 240 241 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 242 { 243 if ((unsigned)id >= LOADING_MAX_ID) 244 return kernel_load_data_str[LOADING_UNKNOWN]; 245 246 return kernel_load_data_str[id]; 247 } 248 249 #ifdef CONFIG_SECURITY 250 251 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 252 int register_blocking_lsm_notifier(struct notifier_block *nb); 253 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 254 255 /* prototypes */ 256 extern int security_init(void); 257 extern int early_security_init(void); 258 259 /* Security operations */ 260 int security_binder_set_context_mgr(struct task_struct *mgr); 261 int security_binder_transaction(struct task_struct *from, 262 struct task_struct *to); 263 int security_binder_transfer_binder(struct task_struct *from, 264 struct task_struct *to); 265 int security_binder_transfer_file(struct task_struct *from, 266 struct task_struct *to, struct file *file); 267 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 268 int security_ptrace_traceme(struct task_struct *parent); 269 int security_capget(struct task_struct *target, 270 kernel_cap_t *effective, 271 kernel_cap_t *inheritable, 272 kernel_cap_t *permitted); 273 int security_capset(struct cred *new, const struct cred *old, 274 const kernel_cap_t *effective, 275 const kernel_cap_t *inheritable, 276 const kernel_cap_t *permitted); 277 int security_capable(const struct cred *cred, 278 struct user_namespace *ns, 279 int cap, 280 unsigned int opts); 281 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 282 int security_quota_on(struct dentry *dentry); 283 int security_syslog(int type); 284 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 285 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 286 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 287 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 288 int security_bprm_check(struct linux_binprm *bprm); 289 void security_bprm_committing_creds(struct linux_binprm *bprm); 290 void security_bprm_committed_creds(struct linux_binprm *bprm); 291 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 292 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 293 int security_sb_alloc(struct super_block *sb); 294 void security_sb_delete(struct super_block *sb); 295 void security_sb_free(struct super_block *sb); 296 void security_free_mnt_opts(void **mnt_opts); 297 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 298 int security_sb_remount(struct super_block *sb, void *mnt_opts); 299 int security_sb_kern_mount(struct super_block *sb); 300 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 301 int security_sb_statfs(struct dentry *dentry); 302 int security_sb_mount(const char *dev_name, const struct path *path, 303 const char *type, unsigned long flags, void *data); 304 int security_sb_umount(struct vfsmount *mnt, int flags); 305 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 306 int security_sb_set_mnt_opts(struct super_block *sb, 307 void *mnt_opts, 308 unsigned long kern_flags, 309 unsigned long *set_kern_flags); 310 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 311 struct super_block *newsb, 312 unsigned long kern_flags, 313 unsigned long *set_kern_flags); 314 int security_add_mnt_opt(const char *option, const char *val, 315 int len, void **mnt_opts); 316 int security_move_mount(const struct path *from_path, const struct path *to_path); 317 int security_dentry_init_security(struct dentry *dentry, int mode, 318 const struct qstr *name, void **ctx, 319 u32 *ctxlen); 320 int security_dentry_create_files_as(struct dentry *dentry, int mode, 321 struct qstr *name, 322 const struct cred *old, 323 struct cred *new); 324 int security_path_notify(const struct path *path, u64 mask, 325 unsigned int obj_type); 326 int security_inode_alloc(struct inode *inode); 327 void security_inode_free(struct inode *inode); 328 int security_inode_init_security(struct inode *inode, struct inode *dir, 329 const struct qstr *qstr, 330 initxattrs initxattrs, void *fs_data); 331 int security_inode_init_security_anon(struct inode *inode, 332 const struct qstr *name, 333 const struct inode *context_inode); 334 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 335 const struct qstr *qstr, const char **name, 336 void **value, size_t *len); 337 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 338 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 339 struct dentry *new_dentry); 340 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 341 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 342 const char *old_name); 343 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 344 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 345 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 346 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 347 struct inode *new_dir, struct dentry *new_dentry, 348 unsigned int flags); 349 int security_inode_readlink(struct dentry *dentry); 350 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 351 bool rcu); 352 int security_inode_permission(struct inode *inode, int mask); 353 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 354 int security_inode_getattr(const struct path *path); 355 int security_inode_setxattr(struct user_namespace *mnt_userns, 356 struct dentry *dentry, const char *name, 357 const void *value, size_t size, int flags); 358 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 359 const void *value, size_t size, int flags); 360 int security_inode_getxattr(struct dentry *dentry, const char *name); 361 int security_inode_listxattr(struct dentry *dentry); 362 int security_inode_removexattr(struct user_namespace *mnt_userns, 363 struct dentry *dentry, const char *name); 364 int security_inode_need_killpriv(struct dentry *dentry); 365 int security_inode_killpriv(struct user_namespace *mnt_userns, 366 struct dentry *dentry); 367 int security_inode_getsecurity(struct user_namespace *mnt_userns, 368 struct inode *inode, const char *name, 369 void **buffer, bool alloc); 370 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 371 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 372 void security_inode_getsecid(struct inode *inode, u32 *secid); 373 int security_inode_copy_up(struct dentry *src, struct cred **new); 374 int security_inode_copy_up_xattr(const char *name); 375 int security_kernfs_init_security(struct kernfs_node *kn_dir, 376 struct kernfs_node *kn); 377 int security_file_permission(struct file *file, int mask); 378 int security_file_alloc(struct file *file); 379 void security_file_free(struct file *file); 380 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 381 int security_mmap_file(struct file *file, unsigned long prot, 382 unsigned long flags); 383 int security_mmap_addr(unsigned long addr); 384 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 385 unsigned long prot); 386 int security_file_lock(struct file *file, unsigned int cmd); 387 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 388 void security_file_set_fowner(struct file *file); 389 int security_file_send_sigiotask(struct task_struct *tsk, 390 struct fown_struct *fown, int sig); 391 int security_file_receive(struct file *file); 392 int security_file_open(struct file *file); 393 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 394 void security_task_free(struct task_struct *task); 395 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 396 void security_cred_free(struct cred *cred); 397 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 398 void security_transfer_creds(struct cred *new, const struct cred *old); 399 void security_cred_getsecid(const struct cred *c, u32 *secid); 400 int security_kernel_act_as(struct cred *new, u32 secid); 401 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 402 int security_kernel_module_request(char *kmod_name); 403 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 404 int security_kernel_post_load_data(char *buf, loff_t size, 405 enum kernel_load_data_id id, 406 char *description); 407 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 408 bool contents); 409 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 410 enum kernel_read_file_id id); 411 int security_task_fix_setuid(struct cred *new, const struct cred *old, 412 int flags); 413 int security_task_fix_setgid(struct cred *new, const struct cred *old, 414 int flags); 415 int security_task_setpgid(struct task_struct *p, pid_t pgid); 416 int security_task_getpgid(struct task_struct *p); 417 int security_task_getsid(struct task_struct *p); 418 void security_task_getsecid(struct task_struct *p, u32 *secid); 419 int security_task_setnice(struct task_struct *p, int nice); 420 int security_task_setioprio(struct task_struct *p, int ioprio); 421 int security_task_getioprio(struct task_struct *p); 422 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 423 unsigned int flags); 424 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 425 struct rlimit *new_rlim); 426 int security_task_setscheduler(struct task_struct *p); 427 int security_task_getscheduler(struct task_struct *p); 428 int security_task_movememory(struct task_struct *p); 429 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 430 int sig, const struct cred *cred); 431 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 432 unsigned long arg4, unsigned long arg5); 433 void security_task_to_inode(struct task_struct *p, struct inode *inode); 434 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 435 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 436 int security_msg_msg_alloc(struct msg_msg *msg); 437 void security_msg_msg_free(struct msg_msg *msg); 438 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 439 void security_msg_queue_free(struct kern_ipc_perm *msq); 440 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 441 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 442 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 443 struct msg_msg *msg, int msqflg); 444 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 445 struct task_struct *target, long type, int mode); 446 int security_shm_alloc(struct kern_ipc_perm *shp); 447 void security_shm_free(struct kern_ipc_perm *shp); 448 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 449 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 450 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 451 int security_sem_alloc(struct kern_ipc_perm *sma); 452 void security_sem_free(struct kern_ipc_perm *sma); 453 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 454 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 455 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 456 unsigned nsops, int alter); 457 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 458 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 459 char **value); 460 int security_setprocattr(const char *lsm, const char *name, void *value, 461 size_t size); 462 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 463 int security_ismaclabel(const char *name); 464 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 465 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 466 void security_release_secctx(char *secdata, u32 seclen); 467 void security_inode_invalidate_secctx(struct inode *inode); 468 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 469 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 470 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 471 int security_locked_down(enum lockdown_reason what); 472 #else /* CONFIG_SECURITY */ 473 474 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 475 { 476 return 0; 477 } 478 479 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 480 { 481 return 0; 482 } 483 484 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 485 { 486 return 0; 487 } 488 489 static inline void security_free_mnt_opts(void **mnt_opts) 490 { 491 } 492 493 /* 494 * This is the default capabilities functionality. Most of these functions 495 * are just stubbed out, but a few must call the proper capable code. 496 */ 497 498 static inline int security_init(void) 499 { 500 return 0; 501 } 502 503 static inline int early_security_init(void) 504 { 505 return 0; 506 } 507 508 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 509 { 510 return 0; 511 } 512 513 static inline int security_binder_transaction(struct task_struct *from, 514 struct task_struct *to) 515 { 516 return 0; 517 } 518 519 static inline int security_binder_transfer_binder(struct task_struct *from, 520 struct task_struct *to) 521 { 522 return 0; 523 } 524 525 static inline int security_binder_transfer_file(struct task_struct *from, 526 struct task_struct *to, 527 struct file *file) 528 { 529 return 0; 530 } 531 532 static inline int security_ptrace_access_check(struct task_struct *child, 533 unsigned int mode) 534 { 535 return cap_ptrace_access_check(child, mode); 536 } 537 538 static inline int security_ptrace_traceme(struct task_struct *parent) 539 { 540 return cap_ptrace_traceme(parent); 541 } 542 543 static inline int security_capget(struct task_struct *target, 544 kernel_cap_t *effective, 545 kernel_cap_t *inheritable, 546 kernel_cap_t *permitted) 547 { 548 return cap_capget(target, effective, inheritable, permitted); 549 } 550 551 static inline int security_capset(struct cred *new, 552 const struct cred *old, 553 const kernel_cap_t *effective, 554 const kernel_cap_t *inheritable, 555 const kernel_cap_t *permitted) 556 { 557 return cap_capset(new, old, effective, inheritable, permitted); 558 } 559 560 static inline int security_capable(const struct cred *cred, 561 struct user_namespace *ns, 562 int cap, 563 unsigned int opts) 564 { 565 return cap_capable(cred, ns, cap, opts); 566 } 567 568 static inline int security_quotactl(int cmds, int type, int id, 569 struct super_block *sb) 570 { 571 return 0; 572 } 573 574 static inline int security_quota_on(struct dentry *dentry) 575 { 576 return 0; 577 } 578 579 static inline int security_syslog(int type) 580 { 581 return 0; 582 } 583 584 static inline int security_settime64(const struct timespec64 *ts, 585 const struct timezone *tz) 586 { 587 return cap_settime(ts, tz); 588 } 589 590 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 591 { 592 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 593 } 594 595 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 596 { 597 return 0; 598 } 599 600 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 601 struct file *file) 602 { 603 return cap_bprm_creds_from_file(bprm, file); 604 } 605 606 static inline int security_bprm_check(struct linux_binprm *bprm) 607 { 608 return 0; 609 } 610 611 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 612 { 613 } 614 615 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 616 { 617 } 618 619 static inline int security_fs_context_dup(struct fs_context *fc, 620 struct fs_context *src_fc) 621 { 622 return 0; 623 } 624 static inline int security_fs_context_parse_param(struct fs_context *fc, 625 struct fs_parameter *param) 626 { 627 return -ENOPARAM; 628 } 629 630 static inline int security_sb_alloc(struct super_block *sb) 631 { 632 return 0; 633 } 634 635 static inline void security_sb_delete(struct super_block *sb) 636 { } 637 638 static inline void security_sb_free(struct super_block *sb) 639 { } 640 641 static inline int security_sb_eat_lsm_opts(char *options, 642 void **mnt_opts) 643 { 644 return 0; 645 } 646 647 static inline int security_sb_remount(struct super_block *sb, 648 void *mnt_opts) 649 { 650 return 0; 651 } 652 653 static inline int security_sb_kern_mount(struct super_block *sb) 654 { 655 return 0; 656 } 657 658 static inline int security_sb_show_options(struct seq_file *m, 659 struct super_block *sb) 660 { 661 return 0; 662 } 663 664 static inline int security_sb_statfs(struct dentry *dentry) 665 { 666 return 0; 667 } 668 669 static inline int security_sb_mount(const char *dev_name, const struct path *path, 670 const char *type, unsigned long flags, 671 void *data) 672 { 673 return 0; 674 } 675 676 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 677 { 678 return 0; 679 } 680 681 static inline int security_sb_pivotroot(const struct path *old_path, 682 const struct path *new_path) 683 { 684 return 0; 685 } 686 687 static inline int security_sb_set_mnt_opts(struct super_block *sb, 688 void *mnt_opts, 689 unsigned long kern_flags, 690 unsigned long *set_kern_flags) 691 { 692 return 0; 693 } 694 695 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 696 struct super_block *newsb, 697 unsigned long kern_flags, 698 unsigned long *set_kern_flags) 699 { 700 return 0; 701 } 702 703 static inline int security_add_mnt_opt(const char *option, const char *val, 704 int len, void **mnt_opts) 705 { 706 return 0; 707 } 708 709 static inline int security_move_mount(const struct path *from_path, 710 const struct path *to_path) 711 { 712 return 0; 713 } 714 715 static inline int security_path_notify(const struct path *path, u64 mask, 716 unsigned int obj_type) 717 { 718 return 0; 719 } 720 721 static inline int security_inode_alloc(struct inode *inode) 722 { 723 return 0; 724 } 725 726 static inline void security_inode_free(struct inode *inode) 727 { } 728 729 static inline int security_dentry_init_security(struct dentry *dentry, 730 int mode, 731 const struct qstr *name, 732 void **ctx, 733 u32 *ctxlen) 734 { 735 return -EOPNOTSUPP; 736 } 737 738 static inline int security_dentry_create_files_as(struct dentry *dentry, 739 int mode, struct qstr *name, 740 const struct cred *old, 741 struct cred *new) 742 { 743 return 0; 744 } 745 746 747 static inline int security_inode_init_security(struct inode *inode, 748 struct inode *dir, 749 const struct qstr *qstr, 750 const initxattrs xattrs, 751 void *fs_data) 752 { 753 return 0; 754 } 755 756 static inline int security_inode_init_security_anon(struct inode *inode, 757 const struct qstr *name, 758 const struct inode *context_inode) 759 { 760 return 0; 761 } 762 763 static inline int security_old_inode_init_security(struct inode *inode, 764 struct inode *dir, 765 const struct qstr *qstr, 766 const char **name, 767 void **value, size_t *len) 768 { 769 return -EOPNOTSUPP; 770 } 771 772 static inline int security_inode_create(struct inode *dir, 773 struct dentry *dentry, 774 umode_t mode) 775 { 776 return 0; 777 } 778 779 static inline int security_inode_link(struct dentry *old_dentry, 780 struct inode *dir, 781 struct dentry *new_dentry) 782 { 783 return 0; 784 } 785 786 static inline int security_inode_unlink(struct inode *dir, 787 struct dentry *dentry) 788 { 789 return 0; 790 } 791 792 static inline int security_inode_symlink(struct inode *dir, 793 struct dentry *dentry, 794 const char *old_name) 795 { 796 return 0; 797 } 798 799 static inline int security_inode_mkdir(struct inode *dir, 800 struct dentry *dentry, 801 int mode) 802 { 803 return 0; 804 } 805 806 static inline int security_inode_rmdir(struct inode *dir, 807 struct dentry *dentry) 808 { 809 return 0; 810 } 811 812 static inline int security_inode_mknod(struct inode *dir, 813 struct dentry *dentry, 814 int mode, dev_t dev) 815 { 816 return 0; 817 } 818 819 static inline int security_inode_rename(struct inode *old_dir, 820 struct dentry *old_dentry, 821 struct inode *new_dir, 822 struct dentry *new_dentry, 823 unsigned int flags) 824 { 825 return 0; 826 } 827 828 static inline int security_inode_readlink(struct dentry *dentry) 829 { 830 return 0; 831 } 832 833 static inline int security_inode_follow_link(struct dentry *dentry, 834 struct inode *inode, 835 bool rcu) 836 { 837 return 0; 838 } 839 840 static inline int security_inode_permission(struct inode *inode, int mask) 841 { 842 return 0; 843 } 844 845 static inline int security_inode_setattr(struct dentry *dentry, 846 struct iattr *attr) 847 { 848 return 0; 849 } 850 851 static inline int security_inode_getattr(const struct path *path) 852 { 853 return 0; 854 } 855 856 static inline int security_inode_setxattr(struct user_namespace *mnt_userns, 857 struct dentry *dentry, const char *name, const void *value, 858 size_t size, int flags) 859 { 860 return cap_inode_setxattr(dentry, name, value, size, flags); 861 } 862 863 static inline void security_inode_post_setxattr(struct dentry *dentry, 864 const char *name, const void *value, size_t size, int flags) 865 { } 866 867 static inline int security_inode_getxattr(struct dentry *dentry, 868 const char *name) 869 { 870 return 0; 871 } 872 873 static inline int security_inode_listxattr(struct dentry *dentry) 874 { 875 return 0; 876 } 877 878 static inline int security_inode_removexattr(struct user_namespace *mnt_userns, 879 struct dentry *dentry, 880 const char *name) 881 { 882 return cap_inode_removexattr(mnt_userns, dentry, name); 883 } 884 885 static inline int security_inode_need_killpriv(struct dentry *dentry) 886 { 887 return cap_inode_need_killpriv(dentry); 888 } 889 890 static inline int security_inode_killpriv(struct user_namespace *mnt_userns, 891 struct dentry *dentry) 892 { 893 return cap_inode_killpriv(mnt_userns, dentry); 894 } 895 896 static inline int security_inode_getsecurity(struct user_namespace *mnt_userns, 897 struct inode *inode, 898 const char *name, void **buffer, 899 bool alloc) 900 { 901 return cap_inode_getsecurity(mnt_userns, inode, name, buffer, alloc); 902 } 903 904 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 905 { 906 return -EOPNOTSUPP; 907 } 908 909 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 910 { 911 return 0; 912 } 913 914 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 915 { 916 *secid = 0; 917 } 918 919 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 920 { 921 return 0; 922 } 923 924 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 925 struct kernfs_node *kn) 926 { 927 return 0; 928 } 929 930 static inline int security_inode_copy_up_xattr(const char *name) 931 { 932 return -EOPNOTSUPP; 933 } 934 935 static inline int security_file_permission(struct file *file, int mask) 936 { 937 return 0; 938 } 939 940 static inline int security_file_alloc(struct file *file) 941 { 942 return 0; 943 } 944 945 static inline void security_file_free(struct file *file) 946 { } 947 948 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 949 unsigned long arg) 950 { 951 return 0; 952 } 953 954 static inline int security_mmap_file(struct file *file, unsigned long prot, 955 unsigned long flags) 956 { 957 return 0; 958 } 959 960 static inline int security_mmap_addr(unsigned long addr) 961 { 962 return cap_mmap_addr(addr); 963 } 964 965 static inline int security_file_mprotect(struct vm_area_struct *vma, 966 unsigned long reqprot, 967 unsigned long prot) 968 { 969 return 0; 970 } 971 972 static inline int security_file_lock(struct file *file, unsigned int cmd) 973 { 974 return 0; 975 } 976 977 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 978 unsigned long arg) 979 { 980 return 0; 981 } 982 983 static inline void security_file_set_fowner(struct file *file) 984 { 985 return; 986 } 987 988 static inline int security_file_send_sigiotask(struct task_struct *tsk, 989 struct fown_struct *fown, 990 int sig) 991 { 992 return 0; 993 } 994 995 static inline int security_file_receive(struct file *file) 996 { 997 return 0; 998 } 999 1000 static inline int security_file_open(struct file *file) 1001 { 1002 return 0; 1003 } 1004 1005 static inline int security_task_alloc(struct task_struct *task, 1006 unsigned long clone_flags) 1007 { 1008 return 0; 1009 } 1010 1011 static inline void security_task_free(struct task_struct *task) 1012 { } 1013 1014 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1015 { 1016 return 0; 1017 } 1018 1019 static inline void security_cred_free(struct cred *cred) 1020 { } 1021 1022 static inline int security_prepare_creds(struct cred *new, 1023 const struct cred *old, 1024 gfp_t gfp) 1025 { 1026 return 0; 1027 } 1028 1029 static inline void security_transfer_creds(struct cred *new, 1030 const struct cred *old) 1031 { 1032 } 1033 1034 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1035 { 1036 return 0; 1037 } 1038 1039 static inline int security_kernel_create_files_as(struct cred *cred, 1040 struct inode *inode) 1041 { 1042 return 0; 1043 } 1044 1045 static inline int security_kernel_module_request(char *kmod_name) 1046 { 1047 return 0; 1048 } 1049 1050 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1051 { 1052 return 0; 1053 } 1054 1055 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1056 enum kernel_load_data_id id, 1057 char *description) 1058 { 1059 return 0; 1060 } 1061 1062 static inline int security_kernel_read_file(struct file *file, 1063 enum kernel_read_file_id id, 1064 bool contents) 1065 { 1066 return 0; 1067 } 1068 1069 static inline int security_kernel_post_read_file(struct file *file, 1070 char *buf, loff_t size, 1071 enum kernel_read_file_id id) 1072 { 1073 return 0; 1074 } 1075 1076 static inline int security_task_fix_setuid(struct cred *new, 1077 const struct cred *old, 1078 int flags) 1079 { 1080 return cap_task_fix_setuid(new, old, flags); 1081 } 1082 1083 static inline int security_task_fix_setgid(struct cred *new, 1084 const struct cred *old, 1085 int flags) 1086 { 1087 return 0; 1088 } 1089 1090 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1091 { 1092 return 0; 1093 } 1094 1095 static inline int security_task_getpgid(struct task_struct *p) 1096 { 1097 return 0; 1098 } 1099 1100 static inline int security_task_getsid(struct task_struct *p) 1101 { 1102 return 0; 1103 } 1104 1105 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1106 { 1107 *secid = 0; 1108 } 1109 1110 static inline int security_task_setnice(struct task_struct *p, int nice) 1111 { 1112 return cap_task_setnice(p, nice); 1113 } 1114 1115 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1116 { 1117 return cap_task_setioprio(p, ioprio); 1118 } 1119 1120 static inline int security_task_getioprio(struct task_struct *p) 1121 { 1122 return 0; 1123 } 1124 1125 static inline int security_task_prlimit(const struct cred *cred, 1126 const struct cred *tcred, 1127 unsigned int flags) 1128 { 1129 return 0; 1130 } 1131 1132 static inline int security_task_setrlimit(struct task_struct *p, 1133 unsigned int resource, 1134 struct rlimit *new_rlim) 1135 { 1136 return 0; 1137 } 1138 1139 static inline int security_task_setscheduler(struct task_struct *p) 1140 { 1141 return cap_task_setscheduler(p); 1142 } 1143 1144 static inline int security_task_getscheduler(struct task_struct *p) 1145 { 1146 return 0; 1147 } 1148 1149 static inline int security_task_movememory(struct task_struct *p) 1150 { 1151 return 0; 1152 } 1153 1154 static inline int security_task_kill(struct task_struct *p, 1155 struct kernel_siginfo *info, int sig, 1156 const struct cred *cred) 1157 { 1158 return 0; 1159 } 1160 1161 static inline int security_task_prctl(int option, unsigned long arg2, 1162 unsigned long arg3, 1163 unsigned long arg4, 1164 unsigned long arg5) 1165 { 1166 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1167 } 1168 1169 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1170 { } 1171 1172 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1173 short flag) 1174 { 1175 return 0; 1176 } 1177 1178 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1179 { 1180 *secid = 0; 1181 } 1182 1183 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1184 { 1185 return 0; 1186 } 1187 1188 static inline void security_msg_msg_free(struct msg_msg *msg) 1189 { } 1190 1191 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1192 { 1193 return 0; 1194 } 1195 1196 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1197 { } 1198 1199 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1200 int msqflg) 1201 { 1202 return 0; 1203 } 1204 1205 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1206 { 1207 return 0; 1208 } 1209 1210 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1211 struct msg_msg *msg, int msqflg) 1212 { 1213 return 0; 1214 } 1215 1216 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1217 struct msg_msg *msg, 1218 struct task_struct *target, 1219 long type, int mode) 1220 { 1221 return 0; 1222 } 1223 1224 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1225 { 1226 return 0; 1227 } 1228 1229 static inline void security_shm_free(struct kern_ipc_perm *shp) 1230 { } 1231 1232 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1233 int shmflg) 1234 { 1235 return 0; 1236 } 1237 1238 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1239 { 1240 return 0; 1241 } 1242 1243 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1244 char __user *shmaddr, int shmflg) 1245 { 1246 return 0; 1247 } 1248 1249 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1250 { 1251 return 0; 1252 } 1253 1254 static inline void security_sem_free(struct kern_ipc_perm *sma) 1255 { } 1256 1257 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1258 { 1259 return 0; 1260 } 1261 1262 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1263 { 1264 return 0; 1265 } 1266 1267 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1268 struct sembuf *sops, unsigned nsops, 1269 int alter) 1270 { 1271 return 0; 1272 } 1273 1274 static inline void security_d_instantiate(struct dentry *dentry, 1275 struct inode *inode) 1276 { } 1277 1278 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1279 char *name, char **value) 1280 { 1281 return -EINVAL; 1282 } 1283 1284 static inline int security_setprocattr(const char *lsm, char *name, 1285 void *value, size_t size) 1286 { 1287 return -EINVAL; 1288 } 1289 1290 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1291 { 1292 return 0; 1293 } 1294 1295 static inline int security_ismaclabel(const char *name) 1296 { 1297 return 0; 1298 } 1299 1300 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1301 { 1302 return -EOPNOTSUPP; 1303 } 1304 1305 static inline int security_secctx_to_secid(const char *secdata, 1306 u32 seclen, 1307 u32 *secid) 1308 { 1309 return -EOPNOTSUPP; 1310 } 1311 1312 static inline void security_release_secctx(char *secdata, u32 seclen) 1313 { 1314 } 1315 1316 static inline void security_inode_invalidate_secctx(struct inode *inode) 1317 { 1318 } 1319 1320 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1321 { 1322 return -EOPNOTSUPP; 1323 } 1324 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1325 { 1326 return -EOPNOTSUPP; 1327 } 1328 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1329 { 1330 return -EOPNOTSUPP; 1331 } 1332 static inline int security_locked_down(enum lockdown_reason what) 1333 { 1334 return 0; 1335 } 1336 #endif /* CONFIG_SECURITY */ 1337 1338 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1339 int security_post_notification(const struct cred *w_cred, 1340 const struct cred *cred, 1341 struct watch_notification *n); 1342 #else 1343 static inline int security_post_notification(const struct cred *w_cred, 1344 const struct cred *cred, 1345 struct watch_notification *n) 1346 { 1347 return 0; 1348 } 1349 #endif 1350 1351 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1352 int security_watch_key(struct key *key); 1353 #else 1354 static inline int security_watch_key(struct key *key) 1355 { 1356 return 0; 1357 } 1358 #endif 1359 1360 #ifdef CONFIG_SECURITY_NETWORK 1361 1362 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1363 int security_unix_may_send(struct socket *sock, struct socket *other); 1364 int security_socket_create(int family, int type, int protocol, int kern); 1365 int security_socket_post_create(struct socket *sock, int family, 1366 int type, int protocol, int kern); 1367 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1368 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1369 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1370 int security_socket_listen(struct socket *sock, int backlog); 1371 int security_socket_accept(struct socket *sock, struct socket *newsock); 1372 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1373 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1374 int size, int flags); 1375 int security_socket_getsockname(struct socket *sock); 1376 int security_socket_getpeername(struct socket *sock); 1377 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1378 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1379 int security_socket_shutdown(struct socket *sock, int how); 1380 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1381 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1382 int __user *optlen, unsigned len); 1383 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1384 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1385 void security_sk_free(struct sock *sk); 1386 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1387 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic); 1388 void security_req_classify_flow(const struct request_sock *req, 1389 struct flowi_common *flic); 1390 void security_sock_graft(struct sock*sk, struct socket *parent); 1391 int security_inet_conn_request(const struct sock *sk, 1392 struct sk_buff *skb, struct request_sock *req); 1393 void security_inet_csk_clone(struct sock *newsk, 1394 const struct request_sock *req); 1395 void security_inet_conn_established(struct sock *sk, 1396 struct sk_buff *skb); 1397 int security_secmark_relabel_packet(u32 secid); 1398 void security_secmark_refcount_inc(void); 1399 void security_secmark_refcount_dec(void); 1400 int security_tun_dev_alloc_security(void **security); 1401 void security_tun_dev_free_security(void *security); 1402 int security_tun_dev_create(void); 1403 int security_tun_dev_attach_queue(void *security); 1404 int security_tun_dev_attach(struct sock *sk, void *security); 1405 int security_tun_dev_open(void *security); 1406 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1407 int security_sctp_bind_connect(struct sock *sk, int optname, 1408 struct sockaddr *address, int addrlen); 1409 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1410 struct sock *newsk); 1411 1412 #else /* CONFIG_SECURITY_NETWORK */ 1413 static inline int security_unix_stream_connect(struct sock *sock, 1414 struct sock *other, 1415 struct sock *newsk) 1416 { 1417 return 0; 1418 } 1419 1420 static inline int security_unix_may_send(struct socket *sock, 1421 struct socket *other) 1422 { 1423 return 0; 1424 } 1425 1426 static inline int security_socket_create(int family, int type, 1427 int protocol, int kern) 1428 { 1429 return 0; 1430 } 1431 1432 static inline int security_socket_post_create(struct socket *sock, 1433 int family, 1434 int type, 1435 int protocol, int kern) 1436 { 1437 return 0; 1438 } 1439 1440 static inline int security_socket_socketpair(struct socket *socka, 1441 struct socket *sockb) 1442 { 1443 return 0; 1444 } 1445 1446 static inline int security_socket_bind(struct socket *sock, 1447 struct sockaddr *address, 1448 int addrlen) 1449 { 1450 return 0; 1451 } 1452 1453 static inline int security_socket_connect(struct socket *sock, 1454 struct sockaddr *address, 1455 int addrlen) 1456 { 1457 return 0; 1458 } 1459 1460 static inline int security_socket_listen(struct socket *sock, int backlog) 1461 { 1462 return 0; 1463 } 1464 1465 static inline int security_socket_accept(struct socket *sock, 1466 struct socket *newsock) 1467 { 1468 return 0; 1469 } 1470 1471 static inline int security_socket_sendmsg(struct socket *sock, 1472 struct msghdr *msg, int size) 1473 { 1474 return 0; 1475 } 1476 1477 static inline int security_socket_recvmsg(struct socket *sock, 1478 struct msghdr *msg, int size, 1479 int flags) 1480 { 1481 return 0; 1482 } 1483 1484 static inline int security_socket_getsockname(struct socket *sock) 1485 { 1486 return 0; 1487 } 1488 1489 static inline int security_socket_getpeername(struct socket *sock) 1490 { 1491 return 0; 1492 } 1493 1494 static inline int security_socket_getsockopt(struct socket *sock, 1495 int level, int optname) 1496 { 1497 return 0; 1498 } 1499 1500 static inline int security_socket_setsockopt(struct socket *sock, 1501 int level, int optname) 1502 { 1503 return 0; 1504 } 1505 1506 static inline int security_socket_shutdown(struct socket *sock, int how) 1507 { 1508 return 0; 1509 } 1510 static inline int security_sock_rcv_skb(struct sock *sk, 1511 struct sk_buff *skb) 1512 { 1513 return 0; 1514 } 1515 1516 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1517 int __user *optlen, unsigned len) 1518 { 1519 return -ENOPROTOOPT; 1520 } 1521 1522 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1523 { 1524 return -ENOPROTOOPT; 1525 } 1526 1527 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1528 { 1529 return 0; 1530 } 1531 1532 static inline void security_sk_free(struct sock *sk) 1533 { 1534 } 1535 1536 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1537 { 1538 } 1539 1540 static inline void security_sk_classify_flow(struct sock *sk, 1541 struct flowi_common *flic) 1542 { 1543 } 1544 1545 static inline void security_req_classify_flow(const struct request_sock *req, 1546 struct flowi_common *flic) 1547 { 1548 } 1549 1550 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1551 { 1552 } 1553 1554 static inline int security_inet_conn_request(const struct sock *sk, 1555 struct sk_buff *skb, struct request_sock *req) 1556 { 1557 return 0; 1558 } 1559 1560 static inline void security_inet_csk_clone(struct sock *newsk, 1561 const struct request_sock *req) 1562 { 1563 } 1564 1565 static inline void security_inet_conn_established(struct sock *sk, 1566 struct sk_buff *skb) 1567 { 1568 } 1569 1570 static inline int security_secmark_relabel_packet(u32 secid) 1571 { 1572 return 0; 1573 } 1574 1575 static inline void security_secmark_refcount_inc(void) 1576 { 1577 } 1578 1579 static inline void security_secmark_refcount_dec(void) 1580 { 1581 } 1582 1583 static inline int security_tun_dev_alloc_security(void **security) 1584 { 1585 return 0; 1586 } 1587 1588 static inline void security_tun_dev_free_security(void *security) 1589 { 1590 } 1591 1592 static inline int security_tun_dev_create(void) 1593 { 1594 return 0; 1595 } 1596 1597 static inline int security_tun_dev_attach_queue(void *security) 1598 { 1599 return 0; 1600 } 1601 1602 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1603 { 1604 return 0; 1605 } 1606 1607 static inline int security_tun_dev_open(void *security) 1608 { 1609 return 0; 1610 } 1611 1612 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1613 struct sk_buff *skb) 1614 { 1615 return 0; 1616 } 1617 1618 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1619 struct sockaddr *address, 1620 int addrlen) 1621 { 1622 return 0; 1623 } 1624 1625 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1626 struct sock *sk, 1627 struct sock *newsk) 1628 { 1629 } 1630 #endif /* CONFIG_SECURITY_NETWORK */ 1631 1632 #ifdef CONFIG_SECURITY_INFINIBAND 1633 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1634 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1635 int security_ib_alloc_security(void **sec); 1636 void security_ib_free_security(void *sec); 1637 #else /* CONFIG_SECURITY_INFINIBAND */ 1638 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1639 { 1640 return 0; 1641 } 1642 1643 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1644 { 1645 return 0; 1646 } 1647 1648 static inline int security_ib_alloc_security(void **sec) 1649 { 1650 return 0; 1651 } 1652 1653 static inline void security_ib_free_security(void *sec) 1654 { 1655 } 1656 #endif /* CONFIG_SECURITY_INFINIBAND */ 1657 1658 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1659 1660 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1661 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1662 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1663 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1664 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1665 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1666 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1667 struct xfrm_sec_ctx *polsec, u32 secid); 1668 int security_xfrm_state_delete(struct xfrm_state *x); 1669 void security_xfrm_state_free(struct xfrm_state *x); 1670 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1671 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1672 struct xfrm_policy *xp, 1673 const struct flowi_common *flic); 1674 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1675 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1676 1677 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1678 1679 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1680 struct xfrm_user_sec_ctx *sec_ctx, 1681 gfp_t gfp) 1682 { 1683 return 0; 1684 } 1685 1686 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1687 { 1688 return 0; 1689 } 1690 1691 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1692 { 1693 } 1694 1695 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1696 { 1697 return 0; 1698 } 1699 1700 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1701 struct xfrm_user_sec_ctx *sec_ctx) 1702 { 1703 return 0; 1704 } 1705 1706 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1707 struct xfrm_sec_ctx *polsec, u32 secid) 1708 { 1709 return 0; 1710 } 1711 1712 static inline void security_xfrm_state_free(struct xfrm_state *x) 1713 { 1714 } 1715 1716 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1717 { 1718 return 0; 1719 } 1720 1721 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1722 { 1723 return 0; 1724 } 1725 1726 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1727 struct xfrm_policy *xp, 1728 const struct flowi_common *flic) 1729 { 1730 return 1; 1731 } 1732 1733 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1734 { 1735 return 0; 1736 } 1737 1738 static inline void security_skb_classify_flow(struct sk_buff *skb, 1739 struct flowi_common *flic) 1740 { 1741 } 1742 1743 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1744 1745 #ifdef CONFIG_SECURITY_PATH 1746 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1747 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1748 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1749 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1750 unsigned int dev); 1751 int security_path_truncate(const struct path *path); 1752 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1753 const char *old_name); 1754 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1755 struct dentry *new_dentry); 1756 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1757 const struct path *new_dir, struct dentry *new_dentry, 1758 unsigned int flags); 1759 int security_path_chmod(const struct path *path, umode_t mode); 1760 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1761 int security_path_chroot(const struct path *path); 1762 #else /* CONFIG_SECURITY_PATH */ 1763 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1764 { 1765 return 0; 1766 } 1767 1768 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1769 umode_t mode) 1770 { 1771 return 0; 1772 } 1773 1774 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1775 { 1776 return 0; 1777 } 1778 1779 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1780 umode_t mode, unsigned int dev) 1781 { 1782 return 0; 1783 } 1784 1785 static inline int security_path_truncate(const struct path *path) 1786 { 1787 return 0; 1788 } 1789 1790 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1791 const char *old_name) 1792 { 1793 return 0; 1794 } 1795 1796 static inline int security_path_link(struct dentry *old_dentry, 1797 const struct path *new_dir, 1798 struct dentry *new_dentry) 1799 { 1800 return 0; 1801 } 1802 1803 static inline int security_path_rename(const struct path *old_dir, 1804 struct dentry *old_dentry, 1805 const struct path *new_dir, 1806 struct dentry *new_dentry, 1807 unsigned int flags) 1808 { 1809 return 0; 1810 } 1811 1812 static inline int security_path_chmod(const struct path *path, umode_t mode) 1813 { 1814 return 0; 1815 } 1816 1817 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1818 { 1819 return 0; 1820 } 1821 1822 static inline int security_path_chroot(const struct path *path) 1823 { 1824 return 0; 1825 } 1826 #endif /* CONFIG_SECURITY_PATH */ 1827 1828 #ifdef CONFIG_KEYS 1829 #ifdef CONFIG_SECURITY 1830 1831 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1832 void security_key_free(struct key *key); 1833 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1834 enum key_need_perm need_perm); 1835 int security_key_getsecurity(struct key *key, char **_buffer); 1836 1837 #else 1838 1839 static inline int security_key_alloc(struct key *key, 1840 const struct cred *cred, 1841 unsigned long flags) 1842 { 1843 return 0; 1844 } 1845 1846 static inline void security_key_free(struct key *key) 1847 { 1848 } 1849 1850 static inline int security_key_permission(key_ref_t key_ref, 1851 const struct cred *cred, 1852 enum key_need_perm need_perm) 1853 { 1854 return 0; 1855 } 1856 1857 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1858 { 1859 *_buffer = NULL; 1860 return 0; 1861 } 1862 1863 #endif 1864 #endif /* CONFIG_KEYS */ 1865 1866 #ifdef CONFIG_AUDIT 1867 #ifdef CONFIG_SECURITY 1868 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1869 int security_audit_rule_known(struct audit_krule *krule); 1870 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1871 void security_audit_rule_free(void *lsmrule); 1872 1873 #else 1874 1875 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1876 void **lsmrule) 1877 { 1878 return 0; 1879 } 1880 1881 static inline int security_audit_rule_known(struct audit_krule *krule) 1882 { 1883 return 0; 1884 } 1885 1886 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1887 void *lsmrule) 1888 { 1889 return 0; 1890 } 1891 1892 static inline void security_audit_rule_free(void *lsmrule) 1893 { } 1894 1895 #endif /* CONFIG_SECURITY */ 1896 #endif /* CONFIG_AUDIT */ 1897 1898 #ifdef CONFIG_SECURITYFS 1899 1900 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1901 struct dentry *parent, void *data, 1902 const struct file_operations *fops); 1903 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1904 struct dentry *securityfs_create_symlink(const char *name, 1905 struct dentry *parent, 1906 const char *target, 1907 const struct inode_operations *iops); 1908 extern void securityfs_remove(struct dentry *dentry); 1909 1910 #else /* CONFIG_SECURITYFS */ 1911 1912 static inline struct dentry *securityfs_create_dir(const char *name, 1913 struct dentry *parent) 1914 { 1915 return ERR_PTR(-ENODEV); 1916 } 1917 1918 static inline struct dentry *securityfs_create_file(const char *name, 1919 umode_t mode, 1920 struct dentry *parent, 1921 void *data, 1922 const struct file_operations *fops) 1923 { 1924 return ERR_PTR(-ENODEV); 1925 } 1926 1927 static inline struct dentry *securityfs_create_symlink(const char *name, 1928 struct dentry *parent, 1929 const char *target, 1930 const struct inode_operations *iops) 1931 { 1932 return ERR_PTR(-ENODEV); 1933 } 1934 1935 static inline void securityfs_remove(struct dentry *dentry) 1936 {} 1937 1938 #endif 1939 1940 #ifdef CONFIG_BPF_SYSCALL 1941 union bpf_attr; 1942 struct bpf_map; 1943 struct bpf_prog; 1944 struct bpf_prog_aux; 1945 #ifdef CONFIG_SECURITY 1946 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1947 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1948 extern int security_bpf_prog(struct bpf_prog *prog); 1949 extern int security_bpf_map_alloc(struct bpf_map *map); 1950 extern void security_bpf_map_free(struct bpf_map *map); 1951 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1952 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1953 #else 1954 static inline int security_bpf(int cmd, union bpf_attr *attr, 1955 unsigned int size) 1956 { 1957 return 0; 1958 } 1959 1960 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1961 { 1962 return 0; 1963 } 1964 1965 static inline int security_bpf_prog(struct bpf_prog *prog) 1966 { 1967 return 0; 1968 } 1969 1970 static inline int security_bpf_map_alloc(struct bpf_map *map) 1971 { 1972 return 0; 1973 } 1974 1975 static inline void security_bpf_map_free(struct bpf_map *map) 1976 { } 1977 1978 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1979 { 1980 return 0; 1981 } 1982 1983 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1984 { } 1985 #endif /* CONFIG_SECURITY */ 1986 #endif /* CONFIG_BPF_SYSCALL */ 1987 1988 #ifdef CONFIG_PERF_EVENTS 1989 struct perf_event_attr; 1990 struct perf_event; 1991 1992 #ifdef CONFIG_SECURITY 1993 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1994 extern int security_perf_event_alloc(struct perf_event *event); 1995 extern void security_perf_event_free(struct perf_event *event); 1996 extern int security_perf_event_read(struct perf_event *event); 1997 extern int security_perf_event_write(struct perf_event *event); 1998 #else 1999 static inline int security_perf_event_open(struct perf_event_attr *attr, 2000 int type) 2001 { 2002 return 0; 2003 } 2004 2005 static inline int security_perf_event_alloc(struct perf_event *event) 2006 { 2007 return 0; 2008 } 2009 2010 static inline void security_perf_event_free(struct perf_event *event) 2011 { 2012 } 2013 2014 static inline int security_perf_event_read(struct perf_event *event) 2015 { 2016 return 0; 2017 } 2018 2019 static inline int security_perf_event_write(struct perf_event *event) 2020 { 2021 return 0; 2022 } 2023 #endif /* CONFIG_SECURITY */ 2024 #endif /* CONFIG_PERF_EVENTS */ 2025 2026 #endif /* ! __LINUX_SECURITY_H */ 2027