1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> 5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> 7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au> 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_free(struct super_block *sb); 295 void security_free_mnt_opts(void **mnt_opts); 296 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 297 int security_sb_remount(struct super_block *sb, void *mnt_opts); 298 int security_sb_kern_mount(struct super_block *sb); 299 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 300 int security_sb_statfs(struct dentry *dentry); 301 int security_sb_mount(const char *dev_name, const struct path *path, 302 const char *type, unsigned long flags, void *data); 303 int security_sb_umount(struct vfsmount *mnt, int flags); 304 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 305 int security_sb_set_mnt_opts(struct super_block *sb, 306 void *mnt_opts, 307 unsigned long kern_flags, 308 unsigned long *set_kern_flags); 309 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 310 struct super_block *newsb, 311 unsigned long kern_flags, 312 unsigned long *set_kern_flags); 313 int security_add_mnt_opt(const char *option, const char *val, 314 int len, void **mnt_opts); 315 int security_move_mount(const struct path *from_path, const struct path *to_path); 316 int security_dentry_init_security(struct dentry *dentry, int mode, 317 const struct qstr *name, void **ctx, 318 u32 *ctxlen); 319 int security_dentry_create_files_as(struct dentry *dentry, int mode, 320 struct qstr *name, 321 const struct cred *old, 322 struct cred *new); 323 int security_path_notify(const struct path *path, u64 mask, 324 unsigned int obj_type); 325 int security_inode_alloc(struct inode *inode); 326 void security_inode_free(struct inode *inode); 327 int security_inode_init_security(struct inode *inode, struct inode *dir, 328 const struct qstr *qstr, 329 initxattrs initxattrs, void *fs_data); 330 int security_inode_init_security_anon(struct inode *inode, 331 const struct qstr *name, 332 const struct inode *context_inode); 333 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 334 const struct qstr *qstr, const char **name, 335 void **value, size_t *len); 336 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 337 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 338 struct dentry *new_dentry); 339 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 340 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 341 const char *old_name); 342 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 343 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 344 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 345 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 346 struct inode *new_dir, struct dentry *new_dentry, 347 unsigned int flags); 348 int security_inode_readlink(struct dentry *dentry); 349 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 350 bool rcu); 351 int security_inode_permission(struct inode *inode, int mask); 352 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 353 int security_inode_getattr(const struct path *path); 354 int security_inode_setxattr(struct user_namespace *mnt_userns, 355 struct dentry *dentry, const char *name, 356 const void *value, size_t size, int flags); 357 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 358 const void *value, size_t size, int flags); 359 int security_inode_getxattr(struct dentry *dentry, const char *name); 360 int security_inode_listxattr(struct dentry *dentry); 361 int security_inode_removexattr(struct user_namespace *mnt_userns, 362 struct dentry *dentry, const char *name); 363 int security_inode_need_killpriv(struct dentry *dentry); 364 int security_inode_killpriv(struct user_namespace *mnt_userns, 365 struct dentry *dentry); 366 int security_inode_getsecurity(struct user_namespace *mnt_userns, 367 struct inode *inode, const char *name, 368 void **buffer, bool alloc); 369 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 370 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 371 void security_inode_getsecid(struct inode *inode, u32 *secid); 372 int security_inode_copy_up(struct dentry *src, struct cred **new); 373 int security_inode_copy_up_xattr(const char *name); 374 int security_kernfs_init_security(struct kernfs_node *kn_dir, 375 struct kernfs_node *kn); 376 int security_file_permission(struct file *file, int mask); 377 int security_file_alloc(struct file *file); 378 void security_file_free(struct file *file); 379 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 380 int security_mmap_file(struct file *file, unsigned long prot, 381 unsigned long flags); 382 int security_mmap_addr(unsigned long addr); 383 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 384 unsigned long prot); 385 int security_file_lock(struct file *file, unsigned int cmd); 386 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 387 void security_file_set_fowner(struct file *file); 388 int security_file_send_sigiotask(struct task_struct *tsk, 389 struct fown_struct *fown, int sig); 390 int security_file_receive(struct file *file); 391 int security_file_open(struct file *file); 392 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 393 void security_task_free(struct task_struct *task); 394 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 395 void security_cred_free(struct cred *cred); 396 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 397 void security_transfer_creds(struct cred *new, const struct cred *old); 398 void security_cred_getsecid(const struct cred *c, u32 *secid); 399 int security_kernel_act_as(struct cred *new, u32 secid); 400 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 401 int security_kernel_module_request(char *kmod_name); 402 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 403 int security_kernel_post_load_data(char *buf, loff_t size, 404 enum kernel_load_data_id id, 405 char *description); 406 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 407 bool contents); 408 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 409 enum kernel_read_file_id id); 410 int security_task_fix_setuid(struct cred *new, const struct cred *old, 411 int flags); 412 int security_task_fix_setgid(struct cred *new, const struct cred *old, 413 int flags); 414 int security_task_setpgid(struct task_struct *p, pid_t pgid); 415 int security_task_getpgid(struct task_struct *p); 416 int security_task_getsid(struct task_struct *p); 417 void security_task_getsecid(struct task_struct *p, u32 *secid); 418 int security_task_setnice(struct task_struct *p, int nice); 419 int security_task_setioprio(struct task_struct *p, int ioprio); 420 int security_task_getioprio(struct task_struct *p); 421 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 422 unsigned int flags); 423 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 424 struct rlimit *new_rlim); 425 int security_task_setscheduler(struct task_struct *p); 426 int security_task_getscheduler(struct task_struct *p); 427 int security_task_movememory(struct task_struct *p); 428 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 429 int sig, const struct cred *cred); 430 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 431 unsigned long arg4, unsigned long arg5); 432 void security_task_to_inode(struct task_struct *p, struct inode *inode); 433 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 434 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 435 int security_msg_msg_alloc(struct msg_msg *msg); 436 void security_msg_msg_free(struct msg_msg *msg); 437 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 438 void security_msg_queue_free(struct kern_ipc_perm *msq); 439 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 440 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 441 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 442 struct msg_msg *msg, int msqflg); 443 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 444 struct task_struct *target, long type, int mode); 445 int security_shm_alloc(struct kern_ipc_perm *shp); 446 void security_shm_free(struct kern_ipc_perm *shp); 447 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 448 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 449 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 450 int security_sem_alloc(struct kern_ipc_perm *sma); 451 void security_sem_free(struct kern_ipc_perm *sma); 452 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 453 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 454 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 455 unsigned nsops, int alter); 456 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 457 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 458 char **value); 459 int security_setprocattr(const char *lsm, const char *name, void *value, 460 size_t size); 461 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 462 int security_ismaclabel(const char *name); 463 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 464 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 465 void security_release_secctx(char *secdata, u32 seclen); 466 void security_inode_invalidate_secctx(struct inode *inode); 467 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 468 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 469 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 470 int security_locked_down(enum lockdown_reason what); 471 #else /* CONFIG_SECURITY */ 472 473 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 474 { 475 return 0; 476 } 477 478 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 479 { 480 return 0; 481 } 482 483 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 484 { 485 return 0; 486 } 487 488 static inline void security_free_mnt_opts(void **mnt_opts) 489 { 490 } 491 492 /* 493 * This is the default capabilities functionality. Most of these functions 494 * are just stubbed out, but a few must call the proper capable code. 495 */ 496 497 static inline int security_init(void) 498 { 499 return 0; 500 } 501 502 static inline int early_security_init(void) 503 { 504 return 0; 505 } 506 507 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 508 { 509 return 0; 510 } 511 512 static inline int security_binder_transaction(struct task_struct *from, 513 struct task_struct *to) 514 { 515 return 0; 516 } 517 518 static inline int security_binder_transfer_binder(struct task_struct *from, 519 struct task_struct *to) 520 { 521 return 0; 522 } 523 524 static inline int security_binder_transfer_file(struct task_struct *from, 525 struct task_struct *to, 526 struct file *file) 527 { 528 return 0; 529 } 530 531 static inline int security_ptrace_access_check(struct task_struct *child, 532 unsigned int mode) 533 { 534 return cap_ptrace_access_check(child, mode); 535 } 536 537 static inline int security_ptrace_traceme(struct task_struct *parent) 538 { 539 return cap_ptrace_traceme(parent); 540 } 541 542 static inline int security_capget(struct task_struct *target, 543 kernel_cap_t *effective, 544 kernel_cap_t *inheritable, 545 kernel_cap_t *permitted) 546 { 547 return cap_capget(target, effective, inheritable, permitted); 548 } 549 550 static inline int security_capset(struct cred *new, 551 const struct cred *old, 552 const kernel_cap_t *effective, 553 const kernel_cap_t *inheritable, 554 const kernel_cap_t *permitted) 555 { 556 return cap_capset(new, old, effective, inheritable, permitted); 557 } 558 559 static inline int security_capable(const struct cred *cred, 560 struct user_namespace *ns, 561 int cap, 562 unsigned int opts) 563 { 564 return cap_capable(cred, ns, cap, opts); 565 } 566 567 static inline int security_quotactl(int cmds, int type, int id, 568 struct super_block *sb) 569 { 570 return 0; 571 } 572 573 static inline int security_quota_on(struct dentry *dentry) 574 { 575 return 0; 576 } 577 578 static inline int security_syslog(int type) 579 { 580 return 0; 581 } 582 583 static inline int security_settime64(const struct timespec64 *ts, 584 const struct timezone *tz) 585 { 586 return cap_settime(ts, tz); 587 } 588 589 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 590 { 591 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 592 } 593 594 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 595 { 596 return 0; 597 } 598 599 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 600 struct file *file) 601 { 602 return cap_bprm_creds_from_file(bprm, file); 603 } 604 605 static inline int security_bprm_check(struct linux_binprm *bprm) 606 { 607 return 0; 608 } 609 610 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 611 { 612 } 613 614 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 615 { 616 } 617 618 static inline int security_fs_context_dup(struct fs_context *fc, 619 struct fs_context *src_fc) 620 { 621 return 0; 622 } 623 static inline int security_fs_context_parse_param(struct fs_context *fc, 624 struct fs_parameter *param) 625 { 626 return -ENOPARAM; 627 } 628 629 static inline int security_sb_alloc(struct super_block *sb) 630 { 631 return 0; 632 } 633 634 static inline void security_sb_free(struct super_block *sb) 635 { } 636 637 static inline int security_sb_eat_lsm_opts(char *options, 638 void **mnt_opts) 639 { 640 return 0; 641 } 642 643 static inline int security_sb_remount(struct super_block *sb, 644 void *mnt_opts) 645 { 646 return 0; 647 } 648 649 static inline int security_sb_kern_mount(struct super_block *sb) 650 { 651 return 0; 652 } 653 654 static inline int security_sb_show_options(struct seq_file *m, 655 struct super_block *sb) 656 { 657 return 0; 658 } 659 660 static inline int security_sb_statfs(struct dentry *dentry) 661 { 662 return 0; 663 } 664 665 static inline int security_sb_mount(const char *dev_name, const struct path *path, 666 const char *type, unsigned long flags, 667 void *data) 668 { 669 return 0; 670 } 671 672 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 673 { 674 return 0; 675 } 676 677 static inline int security_sb_pivotroot(const struct path *old_path, 678 const struct path *new_path) 679 { 680 return 0; 681 } 682 683 static inline int security_sb_set_mnt_opts(struct super_block *sb, 684 void *mnt_opts, 685 unsigned long kern_flags, 686 unsigned long *set_kern_flags) 687 { 688 return 0; 689 } 690 691 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 692 struct super_block *newsb, 693 unsigned long kern_flags, 694 unsigned long *set_kern_flags) 695 { 696 return 0; 697 } 698 699 static inline int security_add_mnt_opt(const char *option, const char *val, 700 int len, void **mnt_opts) 701 { 702 return 0; 703 } 704 705 static inline int security_move_mount(const struct path *from_path, 706 const struct path *to_path) 707 { 708 return 0; 709 } 710 711 static inline int security_path_notify(const struct path *path, u64 mask, 712 unsigned int obj_type) 713 { 714 return 0; 715 } 716 717 static inline int security_inode_alloc(struct inode *inode) 718 { 719 return 0; 720 } 721 722 static inline void security_inode_free(struct inode *inode) 723 { } 724 725 static inline int security_dentry_init_security(struct dentry *dentry, 726 int mode, 727 const struct qstr *name, 728 void **ctx, 729 u32 *ctxlen) 730 { 731 return -EOPNOTSUPP; 732 } 733 734 static inline int security_dentry_create_files_as(struct dentry *dentry, 735 int mode, struct qstr *name, 736 const struct cred *old, 737 struct cred *new) 738 { 739 return 0; 740 } 741 742 743 static inline int security_inode_init_security(struct inode *inode, 744 struct inode *dir, 745 const struct qstr *qstr, 746 const initxattrs xattrs, 747 void *fs_data) 748 { 749 return 0; 750 } 751 752 static inline int security_inode_init_security_anon(struct inode *inode, 753 const struct qstr *name, 754 const struct inode *context_inode) 755 { 756 return 0; 757 } 758 759 static inline int security_old_inode_init_security(struct inode *inode, 760 struct inode *dir, 761 const struct qstr *qstr, 762 const char **name, 763 void **value, size_t *len) 764 { 765 return -EOPNOTSUPP; 766 } 767 768 static inline int security_inode_create(struct inode *dir, 769 struct dentry *dentry, 770 umode_t mode) 771 { 772 return 0; 773 } 774 775 static inline int security_inode_link(struct dentry *old_dentry, 776 struct inode *dir, 777 struct dentry *new_dentry) 778 { 779 return 0; 780 } 781 782 static inline int security_inode_unlink(struct inode *dir, 783 struct dentry *dentry) 784 { 785 return 0; 786 } 787 788 static inline int security_inode_symlink(struct inode *dir, 789 struct dentry *dentry, 790 const char *old_name) 791 { 792 return 0; 793 } 794 795 static inline int security_inode_mkdir(struct inode *dir, 796 struct dentry *dentry, 797 int mode) 798 { 799 return 0; 800 } 801 802 static inline int security_inode_rmdir(struct inode *dir, 803 struct dentry *dentry) 804 { 805 return 0; 806 } 807 808 static inline int security_inode_mknod(struct inode *dir, 809 struct dentry *dentry, 810 int mode, dev_t dev) 811 { 812 return 0; 813 } 814 815 static inline int security_inode_rename(struct inode *old_dir, 816 struct dentry *old_dentry, 817 struct inode *new_dir, 818 struct dentry *new_dentry, 819 unsigned int flags) 820 { 821 return 0; 822 } 823 824 static inline int security_inode_readlink(struct dentry *dentry) 825 { 826 return 0; 827 } 828 829 static inline int security_inode_follow_link(struct dentry *dentry, 830 struct inode *inode, 831 bool rcu) 832 { 833 return 0; 834 } 835 836 static inline int security_inode_permission(struct inode *inode, int mask) 837 { 838 return 0; 839 } 840 841 static inline int security_inode_setattr(struct dentry *dentry, 842 struct iattr *attr) 843 { 844 return 0; 845 } 846 847 static inline int security_inode_getattr(const struct path *path) 848 { 849 return 0; 850 } 851 852 static inline int security_inode_setxattr(struct user_namespace *mnt_userns, 853 struct dentry *dentry, const char *name, const void *value, 854 size_t size, int flags) 855 { 856 return cap_inode_setxattr(dentry, name, value, size, flags); 857 } 858 859 static inline void security_inode_post_setxattr(struct dentry *dentry, 860 const char *name, const void *value, size_t size, int flags) 861 { } 862 863 static inline int security_inode_getxattr(struct dentry *dentry, 864 const char *name) 865 { 866 return 0; 867 } 868 869 static inline int security_inode_listxattr(struct dentry *dentry) 870 { 871 return 0; 872 } 873 874 static inline int security_inode_removexattr(struct user_namespace *mnt_userns, 875 struct dentry *dentry, 876 const char *name) 877 { 878 return cap_inode_removexattr(mnt_userns, dentry, name); 879 } 880 881 static inline int security_inode_need_killpriv(struct dentry *dentry) 882 { 883 return cap_inode_need_killpriv(dentry); 884 } 885 886 static inline int security_inode_killpriv(struct user_namespace *mnt_userns, 887 struct dentry *dentry) 888 { 889 return cap_inode_killpriv(mnt_userns, dentry); 890 } 891 892 static inline int security_inode_getsecurity(struct user_namespace *mnt_userns, 893 struct inode *inode, 894 const char *name, void **buffer, 895 bool alloc) 896 { 897 return cap_inode_getsecurity(mnt_userns, inode, name, buffer, alloc); 898 } 899 900 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 901 { 902 return -EOPNOTSUPP; 903 } 904 905 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 906 { 907 return 0; 908 } 909 910 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 911 { 912 *secid = 0; 913 } 914 915 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 916 { 917 return 0; 918 } 919 920 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 921 struct kernfs_node *kn) 922 { 923 return 0; 924 } 925 926 static inline int security_inode_copy_up_xattr(const char *name) 927 { 928 return -EOPNOTSUPP; 929 } 930 931 static inline int security_file_permission(struct file *file, int mask) 932 { 933 return 0; 934 } 935 936 static inline int security_file_alloc(struct file *file) 937 { 938 return 0; 939 } 940 941 static inline void security_file_free(struct file *file) 942 { } 943 944 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 945 unsigned long arg) 946 { 947 return 0; 948 } 949 950 static inline int security_mmap_file(struct file *file, unsigned long prot, 951 unsigned long flags) 952 { 953 return 0; 954 } 955 956 static inline int security_mmap_addr(unsigned long addr) 957 { 958 return cap_mmap_addr(addr); 959 } 960 961 static inline int security_file_mprotect(struct vm_area_struct *vma, 962 unsigned long reqprot, 963 unsigned long prot) 964 { 965 return 0; 966 } 967 968 static inline int security_file_lock(struct file *file, unsigned int cmd) 969 { 970 return 0; 971 } 972 973 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 974 unsigned long arg) 975 { 976 return 0; 977 } 978 979 static inline void security_file_set_fowner(struct file *file) 980 { 981 return; 982 } 983 984 static inline int security_file_send_sigiotask(struct task_struct *tsk, 985 struct fown_struct *fown, 986 int sig) 987 { 988 return 0; 989 } 990 991 static inline int security_file_receive(struct file *file) 992 { 993 return 0; 994 } 995 996 static inline int security_file_open(struct file *file) 997 { 998 return 0; 999 } 1000 1001 static inline int security_task_alloc(struct task_struct *task, 1002 unsigned long clone_flags) 1003 { 1004 return 0; 1005 } 1006 1007 static inline void security_task_free(struct task_struct *task) 1008 { } 1009 1010 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1011 { 1012 return 0; 1013 } 1014 1015 static inline void security_cred_free(struct cred *cred) 1016 { } 1017 1018 static inline int security_prepare_creds(struct cred *new, 1019 const struct cred *old, 1020 gfp_t gfp) 1021 { 1022 return 0; 1023 } 1024 1025 static inline void security_transfer_creds(struct cred *new, 1026 const struct cred *old) 1027 { 1028 } 1029 1030 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1031 { 1032 return 0; 1033 } 1034 1035 static inline int security_kernel_create_files_as(struct cred *cred, 1036 struct inode *inode) 1037 { 1038 return 0; 1039 } 1040 1041 static inline int security_kernel_module_request(char *kmod_name) 1042 { 1043 return 0; 1044 } 1045 1046 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1047 { 1048 return 0; 1049 } 1050 1051 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1052 enum kernel_load_data_id id, 1053 char *description) 1054 { 1055 return 0; 1056 } 1057 1058 static inline int security_kernel_read_file(struct file *file, 1059 enum kernel_read_file_id id, 1060 bool contents) 1061 { 1062 return 0; 1063 } 1064 1065 static inline int security_kernel_post_read_file(struct file *file, 1066 char *buf, loff_t size, 1067 enum kernel_read_file_id id) 1068 { 1069 return 0; 1070 } 1071 1072 static inline int security_task_fix_setuid(struct cred *new, 1073 const struct cred *old, 1074 int flags) 1075 { 1076 return cap_task_fix_setuid(new, old, flags); 1077 } 1078 1079 static inline int security_task_fix_setgid(struct cred *new, 1080 const struct cred *old, 1081 int flags) 1082 { 1083 return 0; 1084 } 1085 1086 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1087 { 1088 return 0; 1089 } 1090 1091 static inline int security_task_getpgid(struct task_struct *p) 1092 { 1093 return 0; 1094 } 1095 1096 static inline int security_task_getsid(struct task_struct *p) 1097 { 1098 return 0; 1099 } 1100 1101 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1102 { 1103 *secid = 0; 1104 } 1105 1106 static inline int security_task_setnice(struct task_struct *p, int nice) 1107 { 1108 return cap_task_setnice(p, nice); 1109 } 1110 1111 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1112 { 1113 return cap_task_setioprio(p, ioprio); 1114 } 1115 1116 static inline int security_task_getioprio(struct task_struct *p) 1117 { 1118 return 0; 1119 } 1120 1121 static inline int security_task_prlimit(const struct cred *cred, 1122 const struct cred *tcred, 1123 unsigned int flags) 1124 { 1125 return 0; 1126 } 1127 1128 static inline int security_task_setrlimit(struct task_struct *p, 1129 unsigned int resource, 1130 struct rlimit *new_rlim) 1131 { 1132 return 0; 1133 } 1134 1135 static inline int security_task_setscheduler(struct task_struct *p) 1136 { 1137 return cap_task_setscheduler(p); 1138 } 1139 1140 static inline int security_task_getscheduler(struct task_struct *p) 1141 { 1142 return 0; 1143 } 1144 1145 static inline int security_task_movememory(struct task_struct *p) 1146 { 1147 return 0; 1148 } 1149 1150 static inline int security_task_kill(struct task_struct *p, 1151 struct kernel_siginfo *info, int sig, 1152 const struct cred *cred) 1153 { 1154 return 0; 1155 } 1156 1157 static inline int security_task_prctl(int option, unsigned long arg2, 1158 unsigned long arg3, 1159 unsigned long arg4, 1160 unsigned long arg5) 1161 { 1162 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1163 } 1164 1165 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1166 { } 1167 1168 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1169 short flag) 1170 { 1171 return 0; 1172 } 1173 1174 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1175 { 1176 *secid = 0; 1177 } 1178 1179 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1180 { 1181 return 0; 1182 } 1183 1184 static inline void security_msg_msg_free(struct msg_msg *msg) 1185 { } 1186 1187 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1188 { 1189 return 0; 1190 } 1191 1192 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1193 { } 1194 1195 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1196 int msqflg) 1197 { 1198 return 0; 1199 } 1200 1201 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1202 { 1203 return 0; 1204 } 1205 1206 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1207 struct msg_msg *msg, int msqflg) 1208 { 1209 return 0; 1210 } 1211 1212 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1213 struct msg_msg *msg, 1214 struct task_struct *target, 1215 long type, int mode) 1216 { 1217 return 0; 1218 } 1219 1220 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1221 { 1222 return 0; 1223 } 1224 1225 static inline void security_shm_free(struct kern_ipc_perm *shp) 1226 { } 1227 1228 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1229 int shmflg) 1230 { 1231 return 0; 1232 } 1233 1234 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1235 { 1236 return 0; 1237 } 1238 1239 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1240 char __user *shmaddr, int shmflg) 1241 { 1242 return 0; 1243 } 1244 1245 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1246 { 1247 return 0; 1248 } 1249 1250 static inline void security_sem_free(struct kern_ipc_perm *sma) 1251 { } 1252 1253 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1254 { 1255 return 0; 1256 } 1257 1258 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1259 { 1260 return 0; 1261 } 1262 1263 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1264 struct sembuf *sops, unsigned nsops, 1265 int alter) 1266 { 1267 return 0; 1268 } 1269 1270 static inline void security_d_instantiate(struct dentry *dentry, 1271 struct inode *inode) 1272 { } 1273 1274 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1275 char *name, char **value) 1276 { 1277 return -EINVAL; 1278 } 1279 1280 static inline int security_setprocattr(const char *lsm, char *name, 1281 void *value, size_t size) 1282 { 1283 return -EINVAL; 1284 } 1285 1286 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1287 { 1288 return 0; 1289 } 1290 1291 static inline int security_ismaclabel(const char *name) 1292 { 1293 return 0; 1294 } 1295 1296 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1297 { 1298 return -EOPNOTSUPP; 1299 } 1300 1301 static inline int security_secctx_to_secid(const char *secdata, 1302 u32 seclen, 1303 u32 *secid) 1304 { 1305 return -EOPNOTSUPP; 1306 } 1307 1308 static inline void security_release_secctx(char *secdata, u32 seclen) 1309 { 1310 } 1311 1312 static inline void security_inode_invalidate_secctx(struct inode *inode) 1313 { 1314 } 1315 1316 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1317 { 1318 return -EOPNOTSUPP; 1319 } 1320 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1321 { 1322 return -EOPNOTSUPP; 1323 } 1324 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1325 { 1326 return -EOPNOTSUPP; 1327 } 1328 static inline int security_locked_down(enum lockdown_reason what) 1329 { 1330 return 0; 1331 } 1332 #endif /* CONFIG_SECURITY */ 1333 1334 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1335 int security_post_notification(const struct cred *w_cred, 1336 const struct cred *cred, 1337 struct watch_notification *n); 1338 #else 1339 static inline int security_post_notification(const struct cred *w_cred, 1340 const struct cred *cred, 1341 struct watch_notification *n) 1342 { 1343 return 0; 1344 } 1345 #endif 1346 1347 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1348 int security_watch_key(struct key *key); 1349 #else 1350 static inline int security_watch_key(struct key *key) 1351 { 1352 return 0; 1353 } 1354 #endif 1355 1356 #ifdef CONFIG_SECURITY_NETWORK 1357 1358 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1359 int security_unix_may_send(struct socket *sock, struct socket *other); 1360 int security_socket_create(int family, int type, int protocol, int kern); 1361 int security_socket_post_create(struct socket *sock, int family, 1362 int type, int protocol, int kern); 1363 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1364 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1365 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1366 int security_socket_listen(struct socket *sock, int backlog); 1367 int security_socket_accept(struct socket *sock, struct socket *newsock); 1368 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1369 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1370 int size, int flags); 1371 int security_socket_getsockname(struct socket *sock); 1372 int security_socket_getpeername(struct socket *sock); 1373 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1374 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1375 int security_socket_shutdown(struct socket *sock, int how); 1376 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1377 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1378 int __user *optlen, unsigned len); 1379 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1380 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1381 void security_sk_free(struct sock *sk); 1382 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1383 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic); 1384 void security_req_classify_flow(const struct request_sock *req, 1385 struct flowi_common *flic); 1386 void security_sock_graft(struct sock*sk, struct socket *parent); 1387 int security_inet_conn_request(const struct sock *sk, 1388 struct sk_buff *skb, struct request_sock *req); 1389 void security_inet_csk_clone(struct sock *newsk, 1390 const struct request_sock *req); 1391 void security_inet_conn_established(struct sock *sk, 1392 struct sk_buff *skb); 1393 int security_secmark_relabel_packet(u32 secid); 1394 void security_secmark_refcount_inc(void); 1395 void security_secmark_refcount_dec(void); 1396 int security_tun_dev_alloc_security(void **security); 1397 void security_tun_dev_free_security(void *security); 1398 int security_tun_dev_create(void); 1399 int security_tun_dev_attach_queue(void *security); 1400 int security_tun_dev_attach(struct sock *sk, void *security); 1401 int security_tun_dev_open(void *security); 1402 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1403 int security_sctp_bind_connect(struct sock *sk, int optname, 1404 struct sockaddr *address, int addrlen); 1405 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1406 struct sock *newsk); 1407 1408 #else /* CONFIG_SECURITY_NETWORK */ 1409 static inline int security_unix_stream_connect(struct sock *sock, 1410 struct sock *other, 1411 struct sock *newsk) 1412 { 1413 return 0; 1414 } 1415 1416 static inline int security_unix_may_send(struct socket *sock, 1417 struct socket *other) 1418 { 1419 return 0; 1420 } 1421 1422 static inline int security_socket_create(int family, int type, 1423 int protocol, int kern) 1424 { 1425 return 0; 1426 } 1427 1428 static inline int security_socket_post_create(struct socket *sock, 1429 int family, 1430 int type, 1431 int protocol, int kern) 1432 { 1433 return 0; 1434 } 1435 1436 static inline int security_socket_socketpair(struct socket *socka, 1437 struct socket *sockb) 1438 { 1439 return 0; 1440 } 1441 1442 static inline int security_socket_bind(struct socket *sock, 1443 struct sockaddr *address, 1444 int addrlen) 1445 { 1446 return 0; 1447 } 1448 1449 static inline int security_socket_connect(struct socket *sock, 1450 struct sockaddr *address, 1451 int addrlen) 1452 { 1453 return 0; 1454 } 1455 1456 static inline int security_socket_listen(struct socket *sock, int backlog) 1457 { 1458 return 0; 1459 } 1460 1461 static inline int security_socket_accept(struct socket *sock, 1462 struct socket *newsock) 1463 { 1464 return 0; 1465 } 1466 1467 static inline int security_socket_sendmsg(struct socket *sock, 1468 struct msghdr *msg, int size) 1469 { 1470 return 0; 1471 } 1472 1473 static inline int security_socket_recvmsg(struct socket *sock, 1474 struct msghdr *msg, int size, 1475 int flags) 1476 { 1477 return 0; 1478 } 1479 1480 static inline int security_socket_getsockname(struct socket *sock) 1481 { 1482 return 0; 1483 } 1484 1485 static inline int security_socket_getpeername(struct socket *sock) 1486 { 1487 return 0; 1488 } 1489 1490 static inline int security_socket_getsockopt(struct socket *sock, 1491 int level, int optname) 1492 { 1493 return 0; 1494 } 1495 1496 static inline int security_socket_setsockopt(struct socket *sock, 1497 int level, int optname) 1498 { 1499 return 0; 1500 } 1501 1502 static inline int security_socket_shutdown(struct socket *sock, int how) 1503 { 1504 return 0; 1505 } 1506 static inline int security_sock_rcv_skb(struct sock *sk, 1507 struct sk_buff *skb) 1508 { 1509 return 0; 1510 } 1511 1512 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1513 int __user *optlen, unsigned len) 1514 { 1515 return -ENOPROTOOPT; 1516 } 1517 1518 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1519 { 1520 return -ENOPROTOOPT; 1521 } 1522 1523 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1524 { 1525 return 0; 1526 } 1527 1528 static inline void security_sk_free(struct sock *sk) 1529 { 1530 } 1531 1532 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1533 { 1534 } 1535 1536 static inline void security_sk_classify_flow(struct sock *sk, 1537 struct flowi_common *flic) 1538 { 1539 } 1540 1541 static inline void security_req_classify_flow(const struct request_sock *req, 1542 struct flowi_common *flic) 1543 { 1544 } 1545 1546 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1547 { 1548 } 1549 1550 static inline int security_inet_conn_request(const struct sock *sk, 1551 struct sk_buff *skb, struct request_sock *req) 1552 { 1553 return 0; 1554 } 1555 1556 static inline void security_inet_csk_clone(struct sock *newsk, 1557 const struct request_sock *req) 1558 { 1559 } 1560 1561 static inline void security_inet_conn_established(struct sock *sk, 1562 struct sk_buff *skb) 1563 { 1564 } 1565 1566 static inline int security_secmark_relabel_packet(u32 secid) 1567 { 1568 return 0; 1569 } 1570 1571 static inline void security_secmark_refcount_inc(void) 1572 { 1573 } 1574 1575 static inline void security_secmark_refcount_dec(void) 1576 { 1577 } 1578 1579 static inline int security_tun_dev_alloc_security(void **security) 1580 { 1581 return 0; 1582 } 1583 1584 static inline void security_tun_dev_free_security(void *security) 1585 { 1586 } 1587 1588 static inline int security_tun_dev_create(void) 1589 { 1590 return 0; 1591 } 1592 1593 static inline int security_tun_dev_attach_queue(void *security) 1594 { 1595 return 0; 1596 } 1597 1598 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1599 { 1600 return 0; 1601 } 1602 1603 static inline int security_tun_dev_open(void *security) 1604 { 1605 return 0; 1606 } 1607 1608 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1609 struct sk_buff *skb) 1610 { 1611 return 0; 1612 } 1613 1614 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1615 struct sockaddr *address, 1616 int addrlen) 1617 { 1618 return 0; 1619 } 1620 1621 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1622 struct sock *sk, 1623 struct sock *newsk) 1624 { 1625 } 1626 #endif /* CONFIG_SECURITY_NETWORK */ 1627 1628 #ifdef CONFIG_SECURITY_INFINIBAND 1629 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1630 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1631 int security_ib_alloc_security(void **sec); 1632 void security_ib_free_security(void *sec); 1633 #else /* CONFIG_SECURITY_INFINIBAND */ 1634 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1635 { 1636 return 0; 1637 } 1638 1639 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1640 { 1641 return 0; 1642 } 1643 1644 static inline int security_ib_alloc_security(void **sec) 1645 { 1646 return 0; 1647 } 1648 1649 static inline void security_ib_free_security(void *sec) 1650 { 1651 } 1652 #endif /* CONFIG_SECURITY_INFINIBAND */ 1653 1654 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1655 1656 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1657 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1658 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1659 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1660 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1661 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1662 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1663 struct xfrm_sec_ctx *polsec, u32 secid); 1664 int security_xfrm_state_delete(struct xfrm_state *x); 1665 void security_xfrm_state_free(struct xfrm_state *x); 1666 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1667 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1668 struct xfrm_policy *xp, 1669 const struct flowi_common *flic); 1670 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1671 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1672 1673 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1674 1675 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1676 struct xfrm_user_sec_ctx *sec_ctx, 1677 gfp_t gfp) 1678 { 1679 return 0; 1680 } 1681 1682 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1683 { 1684 return 0; 1685 } 1686 1687 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1688 { 1689 } 1690 1691 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1692 { 1693 return 0; 1694 } 1695 1696 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1697 struct xfrm_user_sec_ctx *sec_ctx) 1698 { 1699 return 0; 1700 } 1701 1702 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1703 struct xfrm_sec_ctx *polsec, u32 secid) 1704 { 1705 return 0; 1706 } 1707 1708 static inline void security_xfrm_state_free(struct xfrm_state *x) 1709 { 1710 } 1711 1712 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1713 { 1714 return 0; 1715 } 1716 1717 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1718 { 1719 return 0; 1720 } 1721 1722 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1723 struct xfrm_policy *xp, 1724 const struct flowi_common *flic) 1725 { 1726 return 1; 1727 } 1728 1729 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1730 { 1731 return 0; 1732 } 1733 1734 static inline void security_skb_classify_flow(struct sk_buff *skb, 1735 struct flowi_common *flic) 1736 { 1737 } 1738 1739 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1740 1741 #ifdef CONFIG_SECURITY_PATH 1742 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1743 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1744 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1745 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1746 unsigned int dev); 1747 int security_path_truncate(const struct path *path); 1748 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1749 const char *old_name); 1750 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1751 struct dentry *new_dentry); 1752 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1753 const struct path *new_dir, struct dentry *new_dentry, 1754 unsigned int flags); 1755 int security_path_chmod(const struct path *path, umode_t mode); 1756 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1757 int security_path_chroot(const struct path *path); 1758 #else /* CONFIG_SECURITY_PATH */ 1759 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1760 { 1761 return 0; 1762 } 1763 1764 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1765 umode_t mode) 1766 { 1767 return 0; 1768 } 1769 1770 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1771 { 1772 return 0; 1773 } 1774 1775 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1776 umode_t mode, unsigned int dev) 1777 { 1778 return 0; 1779 } 1780 1781 static inline int security_path_truncate(const struct path *path) 1782 { 1783 return 0; 1784 } 1785 1786 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1787 const char *old_name) 1788 { 1789 return 0; 1790 } 1791 1792 static inline int security_path_link(struct dentry *old_dentry, 1793 const struct path *new_dir, 1794 struct dentry *new_dentry) 1795 { 1796 return 0; 1797 } 1798 1799 static inline int security_path_rename(const struct path *old_dir, 1800 struct dentry *old_dentry, 1801 const struct path *new_dir, 1802 struct dentry *new_dentry, 1803 unsigned int flags) 1804 { 1805 return 0; 1806 } 1807 1808 static inline int security_path_chmod(const struct path *path, umode_t mode) 1809 { 1810 return 0; 1811 } 1812 1813 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1814 { 1815 return 0; 1816 } 1817 1818 static inline int security_path_chroot(const struct path *path) 1819 { 1820 return 0; 1821 } 1822 #endif /* CONFIG_SECURITY_PATH */ 1823 1824 #ifdef CONFIG_KEYS 1825 #ifdef CONFIG_SECURITY 1826 1827 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1828 void security_key_free(struct key *key); 1829 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1830 enum key_need_perm need_perm); 1831 int security_key_getsecurity(struct key *key, char **_buffer); 1832 1833 #else 1834 1835 static inline int security_key_alloc(struct key *key, 1836 const struct cred *cred, 1837 unsigned long flags) 1838 { 1839 return 0; 1840 } 1841 1842 static inline void security_key_free(struct key *key) 1843 { 1844 } 1845 1846 static inline int security_key_permission(key_ref_t key_ref, 1847 const struct cred *cred, 1848 enum key_need_perm need_perm) 1849 { 1850 return 0; 1851 } 1852 1853 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1854 { 1855 *_buffer = NULL; 1856 return 0; 1857 } 1858 1859 #endif 1860 #endif /* CONFIG_KEYS */ 1861 1862 #ifdef CONFIG_AUDIT 1863 #ifdef CONFIG_SECURITY 1864 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1865 int security_audit_rule_known(struct audit_krule *krule); 1866 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1867 void security_audit_rule_free(void *lsmrule); 1868 1869 #else 1870 1871 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1872 void **lsmrule) 1873 { 1874 return 0; 1875 } 1876 1877 static inline int security_audit_rule_known(struct audit_krule *krule) 1878 { 1879 return 0; 1880 } 1881 1882 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1883 void *lsmrule) 1884 { 1885 return 0; 1886 } 1887 1888 static inline void security_audit_rule_free(void *lsmrule) 1889 { } 1890 1891 #endif /* CONFIG_SECURITY */ 1892 #endif /* CONFIG_AUDIT */ 1893 1894 #ifdef CONFIG_SECURITYFS 1895 1896 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1897 struct dentry *parent, void *data, 1898 const struct file_operations *fops); 1899 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1900 struct dentry *securityfs_create_symlink(const char *name, 1901 struct dentry *parent, 1902 const char *target, 1903 const struct inode_operations *iops); 1904 extern void securityfs_remove(struct dentry *dentry); 1905 1906 #else /* CONFIG_SECURITYFS */ 1907 1908 static inline struct dentry *securityfs_create_dir(const char *name, 1909 struct dentry *parent) 1910 { 1911 return ERR_PTR(-ENODEV); 1912 } 1913 1914 static inline struct dentry *securityfs_create_file(const char *name, 1915 umode_t mode, 1916 struct dentry *parent, 1917 void *data, 1918 const struct file_operations *fops) 1919 { 1920 return ERR_PTR(-ENODEV); 1921 } 1922 1923 static inline struct dentry *securityfs_create_symlink(const char *name, 1924 struct dentry *parent, 1925 const char *target, 1926 const struct inode_operations *iops) 1927 { 1928 return ERR_PTR(-ENODEV); 1929 } 1930 1931 static inline void securityfs_remove(struct dentry *dentry) 1932 {} 1933 1934 #endif 1935 1936 #ifdef CONFIG_BPF_SYSCALL 1937 union bpf_attr; 1938 struct bpf_map; 1939 struct bpf_prog; 1940 struct bpf_prog_aux; 1941 #ifdef CONFIG_SECURITY 1942 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1943 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1944 extern int security_bpf_prog(struct bpf_prog *prog); 1945 extern int security_bpf_map_alloc(struct bpf_map *map); 1946 extern void security_bpf_map_free(struct bpf_map *map); 1947 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1948 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1949 #else 1950 static inline int security_bpf(int cmd, union bpf_attr *attr, 1951 unsigned int size) 1952 { 1953 return 0; 1954 } 1955 1956 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1957 { 1958 return 0; 1959 } 1960 1961 static inline int security_bpf_prog(struct bpf_prog *prog) 1962 { 1963 return 0; 1964 } 1965 1966 static inline int security_bpf_map_alloc(struct bpf_map *map) 1967 { 1968 return 0; 1969 } 1970 1971 static inline void security_bpf_map_free(struct bpf_map *map) 1972 { } 1973 1974 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1975 { 1976 return 0; 1977 } 1978 1979 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1980 { } 1981 #endif /* CONFIG_SECURITY */ 1982 #endif /* CONFIG_BPF_SYSCALL */ 1983 1984 #ifdef CONFIG_PERF_EVENTS 1985 struct perf_event_attr; 1986 struct perf_event; 1987 1988 #ifdef CONFIG_SECURITY 1989 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1990 extern int security_perf_event_alloc(struct perf_event *event); 1991 extern void security_perf_event_free(struct perf_event *event); 1992 extern int security_perf_event_read(struct perf_event *event); 1993 extern int security_perf_event_write(struct perf_event *event); 1994 #else 1995 static inline int security_perf_event_open(struct perf_event_attr *attr, 1996 int type) 1997 { 1998 return 0; 1999 } 2000 2001 static inline int security_perf_event_alloc(struct perf_event *event) 2002 { 2003 return 0; 2004 } 2005 2006 static inline void security_perf_event_free(struct perf_event *event) 2007 { 2008 } 2009 2010 static inline int security_perf_event_read(struct perf_event *event) 2011 { 2012 return 0; 2013 } 2014 2015 static inline int security_perf_event_write(struct perf_event *event) 2016 { 2017 return 0; 2018 } 2019 #endif /* CONFIG_SECURITY */ 2020 #endif /* CONFIG_PERF_EVENTS */ 2021 2022 #endif /* ! __LINUX_SECURITY_H */ 2023