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 #include <linux/sockptr.h> 35 36 struct linux_binprm; 37 struct cred; 38 struct rlimit; 39 struct kernel_siginfo; 40 struct sembuf; 41 struct kern_ipc_perm; 42 struct audit_context; 43 struct super_block; 44 struct inode; 45 struct dentry; 46 struct file; 47 struct vfsmount; 48 struct path; 49 struct qstr; 50 struct iattr; 51 struct fown_struct; 52 struct file_operations; 53 struct msg_msg; 54 struct xattr; 55 struct kernfs_node; 56 struct xfrm_sec_ctx; 57 struct mm_struct; 58 struct fs_context; 59 struct fs_parameter; 60 enum fs_value_type; 61 struct watch; 62 struct watch_notification; 63 64 /* Default (no) options for the capable function */ 65 #define CAP_OPT_NONE 0x0 66 /* If capable should audit the security request */ 67 #define CAP_OPT_NOAUDIT BIT(1) 68 /* If capable is being called by a setid function */ 69 #define CAP_OPT_INSETID BIT(2) 70 71 /* LSM Agnostic defines for fs_context::lsm_flags */ 72 #define SECURITY_LSM_NATIVE_LABELS 1 73 74 struct ctl_table; 75 struct audit_krule; 76 struct user_namespace; 77 struct timezone; 78 79 enum lsm_event { 80 LSM_POLICY_CHANGE, 81 }; 82 83 /* 84 * These are reasons that can be passed to the security_locked_down() 85 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 86 * ability for userland to modify kernel code) are placed before 87 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 88 * confidentiality (ie, the ability for userland to extract 89 * information from the running kernel that would otherwise be 90 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 91 * 92 * LSM authors should note that the semantics of any given lockdown 93 * reason are not guaranteed to be stable - the same reason may block 94 * one set of features in one kernel release, and a slightly different 95 * set of features in a later kernel release. LSMs that seek to expose 96 * lockdown policy at any level of granularity other than "none", 97 * "integrity" or "confidentiality" are responsible for either 98 * ensuring that they expose a consistent level of functionality to 99 * userland, or ensuring that userland is aware that this is 100 * potentially a moving target. It is easy to misuse this information 101 * in a way that could break userspace. Please be careful not to do 102 * so. 103 * 104 * If you add to this, remember to extend lockdown_reasons in 105 * security/lockdown/lockdown.c. 106 */ 107 enum lockdown_reason { 108 LOCKDOWN_NONE, 109 LOCKDOWN_MODULE_SIGNATURE, 110 LOCKDOWN_DEV_MEM, 111 LOCKDOWN_EFI_TEST, 112 LOCKDOWN_KEXEC, 113 LOCKDOWN_HIBERNATION, 114 LOCKDOWN_PCI_ACCESS, 115 LOCKDOWN_IOPORT, 116 LOCKDOWN_MSR, 117 LOCKDOWN_ACPI_TABLES, 118 LOCKDOWN_DEVICE_TREE, 119 LOCKDOWN_PCMCIA_CIS, 120 LOCKDOWN_TIOCSSERIAL, 121 LOCKDOWN_MODULE_PARAMETERS, 122 LOCKDOWN_MMIOTRACE, 123 LOCKDOWN_DEBUGFS, 124 LOCKDOWN_XMON_WR, 125 LOCKDOWN_BPF_WRITE_USER, 126 LOCKDOWN_DBG_WRITE_KERNEL, 127 LOCKDOWN_RTAS_ERROR_INJECTION, 128 LOCKDOWN_INTEGRITY_MAX, 129 LOCKDOWN_KCORE, 130 LOCKDOWN_KPROBES, 131 LOCKDOWN_BPF_READ_KERNEL, 132 LOCKDOWN_DBG_READ_KERNEL, 133 LOCKDOWN_PERF, 134 LOCKDOWN_TRACEFS, 135 LOCKDOWN_XMON_RW, 136 LOCKDOWN_XFRM_SECRET, 137 LOCKDOWN_CONFIDENTIALITY_MAX, 138 }; 139 140 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 141 142 /* These functions are in security/commoncap.c */ 143 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 144 int cap, unsigned int opts); 145 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 146 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 147 extern int cap_ptrace_traceme(struct task_struct *parent); 148 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 149 extern int cap_capset(struct cred *new, const struct cred *old, 150 const kernel_cap_t *effective, 151 const kernel_cap_t *inheritable, 152 const kernel_cap_t *permitted); 153 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 154 int cap_inode_setxattr(struct dentry *dentry, const char *name, 155 const void *value, size_t size, int flags); 156 int cap_inode_removexattr(struct mnt_idmap *idmap, 157 struct dentry *dentry, const char *name); 158 int cap_inode_need_killpriv(struct dentry *dentry); 159 int cap_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); 160 int cap_inode_getsecurity(struct mnt_idmap *idmap, 161 struct inode *inode, const char *name, void **buffer, 162 bool alloc); 163 extern int cap_mmap_addr(unsigned long addr); 164 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 165 unsigned long prot, unsigned long flags); 166 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 167 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 168 unsigned long arg4, unsigned long arg5); 169 extern int cap_task_setscheduler(struct task_struct *p); 170 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 171 extern int cap_task_setnice(struct task_struct *p, int nice); 172 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 173 174 struct msghdr; 175 struct sk_buff; 176 struct sock; 177 struct sockaddr; 178 struct socket; 179 struct flowi_common; 180 struct dst_entry; 181 struct xfrm_selector; 182 struct xfrm_policy; 183 struct xfrm_state; 184 struct xfrm_user_sec_ctx; 185 struct seq_file; 186 struct sctp_association; 187 188 #ifdef CONFIG_MMU 189 extern unsigned long mmap_min_addr; 190 extern unsigned long dac_mmap_min_addr; 191 #else 192 #define mmap_min_addr 0UL 193 #define dac_mmap_min_addr 0UL 194 #endif 195 196 /* 197 * Values used in the task_security_ops calls 198 */ 199 /* setuid or setgid, id0 == uid or gid */ 200 #define LSM_SETID_ID 1 201 202 /* setreuid or setregid, id0 == real, id1 == eff */ 203 #define LSM_SETID_RE 2 204 205 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 206 #define LSM_SETID_RES 4 207 208 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 209 #define LSM_SETID_FS 8 210 211 /* Flags for security_task_prlimit(). */ 212 #define LSM_PRLIMIT_READ 1 213 #define LSM_PRLIMIT_WRITE 2 214 215 /* forward declares to avoid warnings */ 216 struct sched_param; 217 struct request_sock; 218 219 /* bprm->unsafe reasons */ 220 #define LSM_UNSAFE_SHARE 1 221 #define LSM_UNSAFE_PTRACE 2 222 #define LSM_UNSAFE_NO_NEW_PRIVS 4 223 224 #ifdef CONFIG_MMU 225 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 226 void *buffer, size_t *lenp, loff_t *ppos); 227 #endif 228 229 /* security_inode_init_security callback function to write xattrs */ 230 typedef int (*initxattrs) (struct inode *inode, 231 const struct xattr *xattr_array, void *fs_data); 232 233 234 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 235 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 236 #define __data_id_stringify(dummy, str) #str, 237 238 enum kernel_load_data_id { 239 __kernel_read_file_id(__data_id_enumify) 240 }; 241 242 static const char * const kernel_load_data_str[] = { 243 __kernel_read_file_id(__data_id_stringify) 244 }; 245 246 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 247 { 248 if ((unsigned)id >= LOADING_MAX_ID) 249 return kernel_load_data_str[LOADING_UNKNOWN]; 250 251 return kernel_load_data_str[id]; 252 } 253 254 #ifdef CONFIG_SECURITY 255 256 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 257 int register_blocking_lsm_notifier(struct notifier_block *nb); 258 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 259 260 /* prototypes */ 261 extern int security_init(void); 262 extern int early_security_init(void); 263 264 /* Security operations */ 265 int security_binder_set_context_mgr(const struct cred *mgr); 266 int security_binder_transaction(const struct cred *from, 267 const struct cred *to); 268 int security_binder_transfer_binder(const struct cred *from, 269 const struct cred *to); 270 int security_binder_transfer_file(const struct cred *from, 271 const struct cred *to, struct file *file); 272 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 273 int security_ptrace_traceme(struct task_struct *parent); 274 int security_capget(struct task_struct *target, 275 kernel_cap_t *effective, 276 kernel_cap_t *inheritable, 277 kernel_cap_t *permitted); 278 int security_capset(struct cred *new, const struct cred *old, 279 const kernel_cap_t *effective, 280 const kernel_cap_t *inheritable, 281 const kernel_cap_t *permitted); 282 int security_capable(const struct cred *cred, 283 struct user_namespace *ns, 284 int cap, 285 unsigned int opts); 286 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 287 int security_quota_on(struct dentry *dentry); 288 int security_syslog(int type); 289 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 290 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 291 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 292 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 293 int security_bprm_check(struct linux_binprm *bprm); 294 void security_bprm_committing_creds(struct linux_binprm *bprm); 295 void security_bprm_committed_creds(struct linux_binprm *bprm); 296 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 297 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 298 int security_sb_alloc(struct super_block *sb); 299 void security_sb_delete(struct super_block *sb); 300 void security_sb_free(struct super_block *sb); 301 void security_free_mnt_opts(void **mnt_opts); 302 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 303 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); 304 int security_sb_remount(struct super_block *sb, void *mnt_opts); 305 int security_sb_kern_mount(struct super_block *sb); 306 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 307 int security_sb_statfs(struct dentry *dentry); 308 int security_sb_mount(const char *dev_name, const struct path *path, 309 const char *type, unsigned long flags, void *data); 310 int security_sb_umount(struct vfsmount *mnt, int flags); 311 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 312 int security_sb_set_mnt_opts(struct super_block *sb, 313 void *mnt_opts, 314 unsigned long kern_flags, 315 unsigned long *set_kern_flags); 316 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 317 struct super_block *newsb, 318 unsigned long kern_flags, 319 unsigned long *set_kern_flags); 320 int security_move_mount(const struct path *from_path, const struct path *to_path); 321 int security_dentry_init_security(struct dentry *dentry, int mode, 322 const struct qstr *name, 323 const char **xattr_name, void **ctx, 324 u32 *ctxlen); 325 int security_dentry_create_files_as(struct dentry *dentry, int mode, 326 struct qstr *name, 327 const struct cred *old, 328 struct cred *new); 329 int security_path_notify(const struct path *path, u64 mask, 330 unsigned int obj_type); 331 int security_inode_alloc(struct inode *inode); 332 void security_inode_free(struct inode *inode); 333 int security_inode_init_security(struct inode *inode, struct inode *dir, 334 const struct qstr *qstr, 335 initxattrs initxattrs, void *fs_data); 336 int security_inode_init_security_anon(struct inode *inode, 337 const struct qstr *name, 338 const struct inode *context_inode); 339 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 340 const struct qstr *qstr, const char **name, 341 void **value, size_t *len); 342 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 343 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 344 struct dentry *new_dentry); 345 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 346 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 347 const char *old_name); 348 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 349 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 350 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 351 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 352 struct inode *new_dir, struct dentry *new_dentry, 353 unsigned int flags); 354 int security_inode_readlink(struct dentry *dentry); 355 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 356 bool rcu); 357 int security_inode_permission(struct inode *inode, int mask); 358 int security_inode_setattr(struct mnt_idmap *idmap, 359 struct dentry *dentry, struct iattr *attr); 360 int security_inode_getattr(const struct path *path); 361 int security_inode_setxattr(struct mnt_idmap *idmap, 362 struct dentry *dentry, const char *name, 363 const void *value, size_t size, int flags); 364 int security_inode_set_acl(struct mnt_idmap *idmap, 365 struct dentry *dentry, const char *acl_name, 366 struct posix_acl *kacl); 367 int security_inode_get_acl(struct mnt_idmap *idmap, 368 struct dentry *dentry, const char *acl_name); 369 int security_inode_remove_acl(struct mnt_idmap *idmap, 370 struct dentry *dentry, const char *acl_name); 371 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 372 const void *value, size_t size, int flags); 373 int security_inode_getxattr(struct dentry *dentry, const char *name); 374 int security_inode_listxattr(struct dentry *dentry); 375 int security_inode_removexattr(struct mnt_idmap *idmap, 376 struct dentry *dentry, const char *name); 377 int security_inode_need_killpriv(struct dentry *dentry); 378 int security_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); 379 int security_inode_getsecurity(struct mnt_idmap *idmap, 380 struct inode *inode, const char *name, 381 void **buffer, bool alloc); 382 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 383 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 384 void security_inode_getsecid(struct inode *inode, u32 *secid); 385 int security_inode_copy_up(struct dentry *src, struct cred **new); 386 int security_inode_copy_up_xattr(const char *name); 387 int security_kernfs_init_security(struct kernfs_node *kn_dir, 388 struct kernfs_node *kn); 389 int security_file_permission(struct file *file, int mask); 390 int security_file_alloc(struct file *file); 391 void security_file_free(struct file *file); 392 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 393 int security_mmap_file(struct file *file, unsigned long prot, 394 unsigned long flags); 395 int security_mmap_addr(unsigned long addr); 396 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 397 unsigned long prot); 398 int security_file_lock(struct file *file, unsigned int cmd); 399 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 400 void security_file_set_fowner(struct file *file); 401 int security_file_send_sigiotask(struct task_struct *tsk, 402 struct fown_struct *fown, int sig); 403 int security_file_receive(struct file *file); 404 int security_file_open(struct file *file); 405 int security_file_truncate(struct file *file); 406 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 407 void security_task_free(struct task_struct *task); 408 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 409 void security_cred_free(struct cred *cred); 410 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 411 void security_transfer_creds(struct cred *new, const struct cred *old); 412 void security_cred_getsecid(const struct cred *c, u32 *secid); 413 int security_kernel_act_as(struct cred *new, u32 secid); 414 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 415 int security_kernel_module_request(char *kmod_name); 416 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 417 int security_kernel_post_load_data(char *buf, loff_t size, 418 enum kernel_load_data_id id, 419 char *description); 420 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 421 bool contents); 422 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 423 enum kernel_read_file_id id); 424 int security_task_fix_setuid(struct cred *new, const struct cred *old, 425 int flags); 426 int security_task_fix_setgid(struct cred *new, const struct cred *old, 427 int flags); 428 int security_task_fix_setgroups(struct cred *new, const struct cred *old); 429 int security_task_setpgid(struct task_struct *p, pid_t pgid); 430 int security_task_getpgid(struct task_struct *p); 431 int security_task_getsid(struct task_struct *p); 432 void security_current_getsecid_subj(u32 *secid); 433 void security_task_getsecid_obj(struct task_struct *p, u32 *secid); 434 int security_task_setnice(struct task_struct *p, int nice); 435 int security_task_setioprio(struct task_struct *p, int ioprio); 436 int security_task_getioprio(struct task_struct *p); 437 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 438 unsigned int flags); 439 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 440 struct rlimit *new_rlim); 441 int security_task_setscheduler(struct task_struct *p); 442 int security_task_getscheduler(struct task_struct *p); 443 int security_task_movememory(struct task_struct *p); 444 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 445 int sig, const struct cred *cred); 446 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 447 unsigned long arg4, unsigned long arg5); 448 void security_task_to_inode(struct task_struct *p, struct inode *inode); 449 int security_create_user_ns(const struct cred *cred); 450 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 451 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 452 int security_msg_msg_alloc(struct msg_msg *msg); 453 void security_msg_msg_free(struct msg_msg *msg); 454 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 455 void security_msg_queue_free(struct kern_ipc_perm *msq); 456 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 457 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 458 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 459 struct msg_msg *msg, int msqflg); 460 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 461 struct task_struct *target, long type, int mode); 462 int security_shm_alloc(struct kern_ipc_perm *shp); 463 void security_shm_free(struct kern_ipc_perm *shp); 464 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 465 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 466 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 467 int security_sem_alloc(struct kern_ipc_perm *sma); 468 void security_sem_free(struct kern_ipc_perm *sma); 469 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 470 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 471 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 472 unsigned nsops, int alter); 473 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 474 int security_getprocattr(struct task_struct *p, const char *lsm, const char *name, 475 char **value); 476 int security_setprocattr(const char *lsm, const char *name, void *value, 477 size_t size); 478 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 479 int security_ismaclabel(const char *name); 480 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 481 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 482 void security_release_secctx(char *secdata, u32 seclen); 483 void security_inode_invalidate_secctx(struct inode *inode); 484 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 485 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 486 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 487 int security_locked_down(enum lockdown_reason what); 488 #else /* CONFIG_SECURITY */ 489 490 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 491 { 492 return 0; 493 } 494 495 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 496 { 497 return 0; 498 } 499 500 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 501 { 502 return 0; 503 } 504 505 static inline void security_free_mnt_opts(void **mnt_opts) 506 { 507 } 508 509 /* 510 * This is the default capabilities functionality. Most of these functions 511 * are just stubbed out, but a few must call the proper capable code. 512 */ 513 514 static inline int security_init(void) 515 { 516 return 0; 517 } 518 519 static inline int early_security_init(void) 520 { 521 return 0; 522 } 523 524 static inline int security_binder_set_context_mgr(const struct cred *mgr) 525 { 526 return 0; 527 } 528 529 static inline int security_binder_transaction(const struct cred *from, 530 const struct cred *to) 531 { 532 return 0; 533 } 534 535 static inline int security_binder_transfer_binder(const struct cred *from, 536 const struct cred *to) 537 { 538 return 0; 539 } 540 541 static inline int security_binder_transfer_file(const struct cred *from, 542 const struct cred *to, 543 struct file *file) 544 { 545 return 0; 546 } 547 548 static inline int security_ptrace_access_check(struct task_struct *child, 549 unsigned int mode) 550 { 551 return cap_ptrace_access_check(child, mode); 552 } 553 554 static inline int security_ptrace_traceme(struct task_struct *parent) 555 { 556 return cap_ptrace_traceme(parent); 557 } 558 559 static inline int security_capget(struct task_struct *target, 560 kernel_cap_t *effective, 561 kernel_cap_t *inheritable, 562 kernel_cap_t *permitted) 563 { 564 return cap_capget(target, effective, inheritable, permitted); 565 } 566 567 static inline int security_capset(struct cred *new, 568 const struct cred *old, 569 const kernel_cap_t *effective, 570 const kernel_cap_t *inheritable, 571 const kernel_cap_t *permitted) 572 { 573 return cap_capset(new, old, effective, inheritable, permitted); 574 } 575 576 static inline int security_capable(const struct cred *cred, 577 struct user_namespace *ns, 578 int cap, 579 unsigned int opts) 580 { 581 return cap_capable(cred, ns, cap, opts); 582 } 583 584 static inline int security_quotactl(int cmds, int type, int id, 585 struct super_block *sb) 586 { 587 return 0; 588 } 589 590 static inline int security_quota_on(struct dentry *dentry) 591 { 592 return 0; 593 } 594 595 static inline int security_syslog(int type) 596 { 597 return 0; 598 } 599 600 static inline int security_settime64(const struct timespec64 *ts, 601 const struct timezone *tz) 602 { 603 return cap_settime(ts, tz); 604 } 605 606 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 607 { 608 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 609 } 610 611 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 612 { 613 return 0; 614 } 615 616 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 617 struct file *file) 618 { 619 return cap_bprm_creds_from_file(bprm, file); 620 } 621 622 static inline int security_bprm_check(struct linux_binprm *bprm) 623 { 624 return 0; 625 } 626 627 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 628 { 629 } 630 631 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 632 { 633 } 634 635 static inline int security_fs_context_dup(struct fs_context *fc, 636 struct fs_context *src_fc) 637 { 638 return 0; 639 } 640 static inline int security_fs_context_parse_param(struct fs_context *fc, 641 struct fs_parameter *param) 642 { 643 return -ENOPARAM; 644 } 645 646 static inline int security_sb_alloc(struct super_block *sb) 647 { 648 return 0; 649 } 650 651 static inline void security_sb_delete(struct super_block *sb) 652 { } 653 654 static inline void security_sb_free(struct super_block *sb) 655 { } 656 657 static inline int security_sb_eat_lsm_opts(char *options, 658 void **mnt_opts) 659 { 660 return 0; 661 } 662 663 static inline int security_sb_remount(struct super_block *sb, 664 void *mnt_opts) 665 { 666 return 0; 667 } 668 669 static inline int security_sb_mnt_opts_compat(struct super_block *sb, 670 void *mnt_opts) 671 { 672 return 0; 673 } 674 675 676 static inline int security_sb_kern_mount(struct super_block *sb) 677 { 678 return 0; 679 } 680 681 static inline int security_sb_show_options(struct seq_file *m, 682 struct super_block *sb) 683 { 684 return 0; 685 } 686 687 static inline int security_sb_statfs(struct dentry *dentry) 688 { 689 return 0; 690 } 691 692 static inline int security_sb_mount(const char *dev_name, const struct path *path, 693 const char *type, unsigned long flags, 694 void *data) 695 { 696 return 0; 697 } 698 699 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 700 { 701 return 0; 702 } 703 704 static inline int security_sb_pivotroot(const struct path *old_path, 705 const struct path *new_path) 706 { 707 return 0; 708 } 709 710 static inline int security_sb_set_mnt_opts(struct super_block *sb, 711 void *mnt_opts, 712 unsigned long kern_flags, 713 unsigned long *set_kern_flags) 714 { 715 return 0; 716 } 717 718 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 719 struct super_block *newsb, 720 unsigned long kern_flags, 721 unsigned long *set_kern_flags) 722 { 723 return 0; 724 } 725 726 static inline int security_move_mount(const struct path *from_path, 727 const struct path *to_path) 728 { 729 return 0; 730 } 731 732 static inline int security_path_notify(const struct path *path, u64 mask, 733 unsigned int obj_type) 734 { 735 return 0; 736 } 737 738 static inline int security_inode_alloc(struct inode *inode) 739 { 740 return 0; 741 } 742 743 static inline void security_inode_free(struct inode *inode) 744 { } 745 746 static inline int security_dentry_init_security(struct dentry *dentry, 747 int mode, 748 const struct qstr *name, 749 const char **xattr_name, 750 void **ctx, 751 u32 *ctxlen) 752 { 753 return -EOPNOTSUPP; 754 } 755 756 static inline int security_dentry_create_files_as(struct dentry *dentry, 757 int mode, struct qstr *name, 758 const struct cred *old, 759 struct cred *new) 760 { 761 return 0; 762 } 763 764 765 static inline int security_inode_init_security(struct inode *inode, 766 struct inode *dir, 767 const struct qstr *qstr, 768 const initxattrs xattrs, 769 void *fs_data) 770 { 771 return 0; 772 } 773 774 static inline int security_inode_init_security_anon(struct inode *inode, 775 const struct qstr *name, 776 const struct inode *context_inode) 777 { 778 return 0; 779 } 780 781 static inline int security_old_inode_init_security(struct inode *inode, 782 struct inode *dir, 783 const struct qstr *qstr, 784 const char **name, 785 void **value, size_t *len) 786 { 787 return -EOPNOTSUPP; 788 } 789 790 static inline int security_inode_create(struct inode *dir, 791 struct dentry *dentry, 792 umode_t mode) 793 { 794 return 0; 795 } 796 797 static inline int security_inode_link(struct dentry *old_dentry, 798 struct inode *dir, 799 struct dentry *new_dentry) 800 { 801 return 0; 802 } 803 804 static inline int security_inode_unlink(struct inode *dir, 805 struct dentry *dentry) 806 { 807 return 0; 808 } 809 810 static inline int security_inode_symlink(struct inode *dir, 811 struct dentry *dentry, 812 const char *old_name) 813 { 814 return 0; 815 } 816 817 static inline int security_inode_mkdir(struct inode *dir, 818 struct dentry *dentry, 819 int mode) 820 { 821 return 0; 822 } 823 824 static inline int security_inode_rmdir(struct inode *dir, 825 struct dentry *dentry) 826 { 827 return 0; 828 } 829 830 static inline int security_inode_mknod(struct inode *dir, 831 struct dentry *dentry, 832 int mode, dev_t dev) 833 { 834 return 0; 835 } 836 837 static inline int security_inode_rename(struct inode *old_dir, 838 struct dentry *old_dentry, 839 struct inode *new_dir, 840 struct dentry *new_dentry, 841 unsigned int flags) 842 { 843 return 0; 844 } 845 846 static inline int security_inode_readlink(struct dentry *dentry) 847 { 848 return 0; 849 } 850 851 static inline int security_inode_follow_link(struct dentry *dentry, 852 struct inode *inode, 853 bool rcu) 854 { 855 return 0; 856 } 857 858 static inline int security_inode_permission(struct inode *inode, int mask) 859 { 860 return 0; 861 } 862 863 static inline int security_inode_setattr(struct mnt_idmap *idmap, 864 struct dentry *dentry, 865 struct iattr *attr) 866 { 867 return 0; 868 } 869 870 static inline int security_inode_getattr(const struct path *path) 871 { 872 return 0; 873 } 874 875 static inline int security_inode_setxattr(struct mnt_idmap *idmap, 876 struct dentry *dentry, const char *name, const void *value, 877 size_t size, int flags) 878 { 879 return cap_inode_setxattr(dentry, name, value, size, flags); 880 } 881 882 static inline int security_inode_set_acl(struct mnt_idmap *idmap, 883 struct dentry *dentry, 884 const char *acl_name, 885 struct posix_acl *kacl) 886 { 887 return 0; 888 } 889 890 static inline int security_inode_get_acl(struct mnt_idmap *idmap, 891 struct dentry *dentry, 892 const char *acl_name) 893 { 894 return 0; 895 } 896 897 static inline int security_inode_remove_acl(struct mnt_idmap *idmap, 898 struct dentry *dentry, 899 const char *acl_name) 900 { 901 return 0; 902 } 903 904 static inline void security_inode_post_setxattr(struct dentry *dentry, 905 const char *name, const void *value, size_t size, int flags) 906 { } 907 908 static inline int security_inode_getxattr(struct dentry *dentry, 909 const char *name) 910 { 911 return 0; 912 } 913 914 static inline int security_inode_listxattr(struct dentry *dentry) 915 { 916 return 0; 917 } 918 919 static inline int security_inode_removexattr(struct mnt_idmap *idmap, 920 struct dentry *dentry, 921 const char *name) 922 { 923 return cap_inode_removexattr(idmap, dentry, name); 924 } 925 926 static inline int security_inode_need_killpriv(struct dentry *dentry) 927 { 928 return cap_inode_need_killpriv(dentry); 929 } 930 931 static inline int security_inode_killpriv(struct mnt_idmap *idmap, 932 struct dentry *dentry) 933 { 934 return cap_inode_killpriv(idmap, dentry); 935 } 936 937 static inline int security_inode_getsecurity(struct mnt_idmap *idmap, 938 struct inode *inode, 939 const char *name, void **buffer, 940 bool alloc) 941 { 942 return cap_inode_getsecurity(idmap, inode, name, buffer, alloc); 943 } 944 945 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 946 { 947 return -EOPNOTSUPP; 948 } 949 950 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 951 { 952 return 0; 953 } 954 955 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 956 { 957 *secid = 0; 958 } 959 960 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 961 { 962 return 0; 963 } 964 965 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 966 struct kernfs_node *kn) 967 { 968 return 0; 969 } 970 971 static inline int security_inode_copy_up_xattr(const char *name) 972 { 973 return -EOPNOTSUPP; 974 } 975 976 static inline int security_file_permission(struct file *file, int mask) 977 { 978 return 0; 979 } 980 981 static inline int security_file_alloc(struct file *file) 982 { 983 return 0; 984 } 985 986 static inline void security_file_free(struct file *file) 987 { } 988 989 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 990 unsigned long arg) 991 { 992 return 0; 993 } 994 995 static inline int security_mmap_file(struct file *file, unsigned long prot, 996 unsigned long flags) 997 { 998 return 0; 999 } 1000 1001 static inline int security_mmap_addr(unsigned long addr) 1002 { 1003 return cap_mmap_addr(addr); 1004 } 1005 1006 static inline int security_file_mprotect(struct vm_area_struct *vma, 1007 unsigned long reqprot, 1008 unsigned long prot) 1009 { 1010 return 0; 1011 } 1012 1013 static inline int security_file_lock(struct file *file, unsigned int cmd) 1014 { 1015 return 0; 1016 } 1017 1018 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 1019 unsigned long arg) 1020 { 1021 return 0; 1022 } 1023 1024 static inline void security_file_set_fowner(struct file *file) 1025 { 1026 return; 1027 } 1028 1029 static inline int security_file_send_sigiotask(struct task_struct *tsk, 1030 struct fown_struct *fown, 1031 int sig) 1032 { 1033 return 0; 1034 } 1035 1036 static inline int security_file_receive(struct file *file) 1037 { 1038 return 0; 1039 } 1040 1041 static inline int security_file_open(struct file *file) 1042 { 1043 return 0; 1044 } 1045 1046 static inline int security_file_truncate(struct file *file) 1047 { 1048 return 0; 1049 } 1050 1051 static inline int security_task_alloc(struct task_struct *task, 1052 unsigned long clone_flags) 1053 { 1054 return 0; 1055 } 1056 1057 static inline void security_task_free(struct task_struct *task) 1058 { } 1059 1060 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1061 { 1062 return 0; 1063 } 1064 1065 static inline void security_cred_free(struct cred *cred) 1066 { } 1067 1068 static inline int security_prepare_creds(struct cred *new, 1069 const struct cred *old, 1070 gfp_t gfp) 1071 { 1072 return 0; 1073 } 1074 1075 static inline void security_transfer_creds(struct cred *new, 1076 const struct cred *old) 1077 { 1078 } 1079 1080 static inline void security_cred_getsecid(const struct cred *c, u32 *secid) 1081 { 1082 *secid = 0; 1083 } 1084 1085 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1086 { 1087 return 0; 1088 } 1089 1090 static inline int security_kernel_create_files_as(struct cred *cred, 1091 struct inode *inode) 1092 { 1093 return 0; 1094 } 1095 1096 static inline int security_kernel_module_request(char *kmod_name) 1097 { 1098 return 0; 1099 } 1100 1101 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1102 { 1103 return 0; 1104 } 1105 1106 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1107 enum kernel_load_data_id id, 1108 char *description) 1109 { 1110 return 0; 1111 } 1112 1113 static inline int security_kernel_read_file(struct file *file, 1114 enum kernel_read_file_id id, 1115 bool contents) 1116 { 1117 return 0; 1118 } 1119 1120 static inline int security_kernel_post_read_file(struct file *file, 1121 char *buf, loff_t size, 1122 enum kernel_read_file_id id) 1123 { 1124 return 0; 1125 } 1126 1127 static inline int security_task_fix_setuid(struct cred *new, 1128 const struct cred *old, 1129 int flags) 1130 { 1131 return cap_task_fix_setuid(new, old, flags); 1132 } 1133 1134 static inline int security_task_fix_setgid(struct cred *new, 1135 const struct cred *old, 1136 int flags) 1137 { 1138 return 0; 1139 } 1140 1141 static inline int security_task_fix_setgroups(struct cred *new, 1142 const struct cred *old) 1143 { 1144 return 0; 1145 } 1146 1147 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1148 { 1149 return 0; 1150 } 1151 1152 static inline int security_task_getpgid(struct task_struct *p) 1153 { 1154 return 0; 1155 } 1156 1157 static inline int security_task_getsid(struct task_struct *p) 1158 { 1159 return 0; 1160 } 1161 1162 static inline void security_current_getsecid_subj(u32 *secid) 1163 { 1164 *secid = 0; 1165 } 1166 1167 static inline void security_task_getsecid_obj(struct task_struct *p, u32 *secid) 1168 { 1169 *secid = 0; 1170 } 1171 1172 static inline int security_task_setnice(struct task_struct *p, int nice) 1173 { 1174 return cap_task_setnice(p, nice); 1175 } 1176 1177 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1178 { 1179 return cap_task_setioprio(p, ioprio); 1180 } 1181 1182 static inline int security_task_getioprio(struct task_struct *p) 1183 { 1184 return 0; 1185 } 1186 1187 static inline int security_task_prlimit(const struct cred *cred, 1188 const struct cred *tcred, 1189 unsigned int flags) 1190 { 1191 return 0; 1192 } 1193 1194 static inline int security_task_setrlimit(struct task_struct *p, 1195 unsigned int resource, 1196 struct rlimit *new_rlim) 1197 { 1198 return 0; 1199 } 1200 1201 static inline int security_task_setscheduler(struct task_struct *p) 1202 { 1203 return cap_task_setscheduler(p); 1204 } 1205 1206 static inline int security_task_getscheduler(struct task_struct *p) 1207 { 1208 return 0; 1209 } 1210 1211 static inline int security_task_movememory(struct task_struct *p) 1212 { 1213 return 0; 1214 } 1215 1216 static inline int security_task_kill(struct task_struct *p, 1217 struct kernel_siginfo *info, int sig, 1218 const struct cred *cred) 1219 { 1220 return 0; 1221 } 1222 1223 static inline int security_task_prctl(int option, unsigned long arg2, 1224 unsigned long arg3, 1225 unsigned long arg4, 1226 unsigned long arg5) 1227 { 1228 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1229 } 1230 1231 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1232 { } 1233 1234 static inline int security_create_user_ns(const struct cred *cred) 1235 { 1236 return 0; 1237 } 1238 1239 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1240 short flag) 1241 { 1242 return 0; 1243 } 1244 1245 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1246 { 1247 *secid = 0; 1248 } 1249 1250 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1251 { 1252 return 0; 1253 } 1254 1255 static inline void security_msg_msg_free(struct msg_msg *msg) 1256 { } 1257 1258 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1259 { 1260 return 0; 1261 } 1262 1263 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1264 { } 1265 1266 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1267 int msqflg) 1268 { 1269 return 0; 1270 } 1271 1272 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1273 { 1274 return 0; 1275 } 1276 1277 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1278 struct msg_msg *msg, int msqflg) 1279 { 1280 return 0; 1281 } 1282 1283 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1284 struct msg_msg *msg, 1285 struct task_struct *target, 1286 long type, int mode) 1287 { 1288 return 0; 1289 } 1290 1291 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1292 { 1293 return 0; 1294 } 1295 1296 static inline void security_shm_free(struct kern_ipc_perm *shp) 1297 { } 1298 1299 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1300 int shmflg) 1301 { 1302 return 0; 1303 } 1304 1305 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1306 { 1307 return 0; 1308 } 1309 1310 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1311 char __user *shmaddr, int shmflg) 1312 { 1313 return 0; 1314 } 1315 1316 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1317 { 1318 return 0; 1319 } 1320 1321 static inline void security_sem_free(struct kern_ipc_perm *sma) 1322 { } 1323 1324 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1325 { 1326 return 0; 1327 } 1328 1329 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1330 { 1331 return 0; 1332 } 1333 1334 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1335 struct sembuf *sops, unsigned nsops, 1336 int alter) 1337 { 1338 return 0; 1339 } 1340 1341 static inline void security_d_instantiate(struct dentry *dentry, 1342 struct inode *inode) 1343 { } 1344 1345 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1346 const char *name, char **value) 1347 { 1348 return -EINVAL; 1349 } 1350 1351 static inline int security_setprocattr(const char *lsm, char *name, 1352 void *value, size_t size) 1353 { 1354 return -EINVAL; 1355 } 1356 1357 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1358 { 1359 return 0; 1360 } 1361 1362 static inline int security_ismaclabel(const char *name) 1363 { 1364 return 0; 1365 } 1366 1367 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1368 { 1369 return -EOPNOTSUPP; 1370 } 1371 1372 static inline int security_secctx_to_secid(const char *secdata, 1373 u32 seclen, 1374 u32 *secid) 1375 { 1376 return -EOPNOTSUPP; 1377 } 1378 1379 static inline void security_release_secctx(char *secdata, u32 seclen) 1380 { 1381 } 1382 1383 static inline void security_inode_invalidate_secctx(struct inode *inode) 1384 { 1385 } 1386 1387 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1388 { 1389 return -EOPNOTSUPP; 1390 } 1391 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1392 { 1393 return -EOPNOTSUPP; 1394 } 1395 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1396 { 1397 return -EOPNOTSUPP; 1398 } 1399 static inline int security_locked_down(enum lockdown_reason what) 1400 { 1401 return 0; 1402 } 1403 #endif /* CONFIG_SECURITY */ 1404 1405 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1406 int security_post_notification(const struct cred *w_cred, 1407 const struct cred *cred, 1408 struct watch_notification *n); 1409 #else 1410 static inline int security_post_notification(const struct cred *w_cred, 1411 const struct cred *cred, 1412 struct watch_notification *n) 1413 { 1414 return 0; 1415 } 1416 #endif 1417 1418 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1419 int security_watch_key(struct key *key); 1420 #else 1421 static inline int security_watch_key(struct key *key) 1422 { 1423 return 0; 1424 } 1425 #endif 1426 1427 #ifdef CONFIG_SECURITY_NETWORK 1428 1429 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1430 int security_unix_may_send(struct socket *sock, struct socket *other); 1431 int security_socket_create(int family, int type, int protocol, int kern); 1432 int security_socket_post_create(struct socket *sock, int family, 1433 int type, int protocol, int kern); 1434 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1435 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1436 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1437 int security_socket_listen(struct socket *sock, int backlog); 1438 int security_socket_accept(struct socket *sock, struct socket *newsock); 1439 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1440 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1441 int size, int flags); 1442 int security_socket_getsockname(struct socket *sock); 1443 int security_socket_getpeername(struct socket *sock); 1444 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1445 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1446 int security_socket_shutdown(struct socket *sock, int how); 1447 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1448 int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval, 1449 sockptr_t optlen, unsigned int len); 1450 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1451 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1452 void security_sk_free(struct sock *sk); 1453 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1454 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic); 1455 void security_req_classify_flow(const struct request_sock *req, 1456 struct flowi_common *flic); 1457 void security_sock_graft(struct sock*sk, struct socket *parent); 1458 int security_inet_conn_request(const struct sock *sk, 1459 struct sk_buff *skb, struct request_sock *req); 1460 void security_inet_csk_clone(struct sock *newsk, 1461 const struct request_sock *req); 1462 void security_inet_conn_established(struct sock *sk, 1463 struct sk_buff *skb); 1464 int security_secmark_relabel_packet(u32 secid); 1465 void security_secmark_refcount_inc(void); 1466 void security_secmark_refcount_dec(void); 1467 int security_tun_dev_alloc_security(void **security); 1468 void security_tun_dev_free_security(void *security); 1469 int security_tun_dev_create(void); 1470 int security_tun_dev_attach_queue(void *security); 1471 int security_tun_dev_attach(struct sock *sk, void *security); 1472 int security_tun_dev_open(void *security); 1473 int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb); 1474 int security_sctp_bind_connect(struct sock *sk, int optname, 1475 struct sockaddr *address, int addrlen); 1476 void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, 1477 struct sock *newsk); 1478 int security_sctp_assoc_established(struct sctp_association *asoc, 1479 struct sk_buff *skb); 1480 1481 #else /* CONFIG_SECURITY_NETWORK */ 1482 static inline int security_unix_stream_connect(struct sock *sock, 1483 struct sock *other, 1484 struct sock *newsk) 1485 { 1486 return 0; 1487 } 1488 1489 static inline int security_unix_may_send(struct socket *sock, 1490 struct socket *other) 1491 { 1492 return 0; 1493 } 1494 1495 static inline int security_socket_create(int family, int type, 1496 int protocol, int kern) 1497 { 1498 return 0; 1499 } 1500 1501 static inline int security_socket_post_create(struct socket *sock, 1502 int family, 1503 int type, 1504 int protocol, int kern) 1505 { 1506 return 0; 1507 } 1508 1509 static inline int security_socket_socketpair(struct socket *socka, 1510 struct socket *sockb) 1511 { 1512 return 0; 1513 } 1514 1515 static inline int security_socket_bind(struct socket *sock, 1516 struct sockaddr *address, 1517 int addrlen) 1518 { 1519 return 0; 1520 } 1521 1522 static inline int security_socket_connect(struct socket *sock, 1523 struct sockaddr *address, 1524 int addrlen) 1525 { 1526 return 0; 1527 } 1528 1529 static inline int security_socket_listen(struct socket *sock, int backlog) 1530 { 1531 return 0; 1532 } 1533 1534 static inline int security_socket_accept(struct socket *sock, 1535 struct socket *newsock) 1536 { 1537 return 0; 1538 } 1539 1540 static inline int security_socket_sendmsg(struct socket *sock, 1541 struct msghdr *msg, int size) 1542 { 1543 return 0; 1544 } 1545 1546 static inline int security_socket_recvmsg(struct socket *sock, 1547 struct msghdr *msg, int size, 1548 int flags) 1549 { 1550 return 0; 1551 } 1552 1553 static inline int security_socket_getsockname(struct socket *sock) 1554 { 1555 return 0; 1556 } 1557 1558 static inline int security_socket_getpeername(struct socket *sock) 1559 { 1560 return 0; 1561 } 1562 1563 static inline int security_socket_getsockopt(struct socket *sock, 1564 int level, int optname) 1565 { 1566 return 0; 1567 } 1568 1569 static inline int security_socket_setsockopt(struct socket *sock, 1570 int level, int optname) 1571 { 1572 return 0; 1573 } 1574 1575 static inline int security_socket_shutdown(struct socket *sock, int how) 1576 { 1577 return 0; 1578 } 1579 static inline int security_sock_rcv_skb(struct sock *sk, 1580 struct sk_buff *skb) 1581 { 1582 return 0; 1583 } 1584 1585 static inline int security_socket_getpeersec_stream(struct socket *sock, 1586 sockptr_t optval, 1587 sockptr_t optlen, 1588 unsigned int len) 1589 { 1590 return -ENOPROTOOPT; 1591 } 1592 1593 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1594 { 1595 return -ENOPROTOOPT; 1596 } 1597 1598 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1599 { 1600 return 0; 1601 } 1602 1603 static inline void security_sk_free(struct sock *sk) 1604 { 1605 } 1606 1607 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1608 { 1609 } 1610 1611 static inline void security_sk_classify_flow(struct sock *sk, 1612 struct flowi_common *flic) 1613 { 1614 } 1615 1616 static inline void security_req_classify_flow(const struct request_sock *req, 1617 struct flowi_common *flic) 1618 { 1619 } 1620 1621 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1622 { 1623 } 1624 1625 static inline int security_inet_conn_request(const struct sock *sk, 1626 struct sk_buff *skb, struct request_sock *req) 1627 { 1628 return 0; 1629 } 1630 1631 static inline void security_inet_csk_clone(struct sock *newsk, 1632 const struct request_sock *req) 1633 { 1634 } 1635 1636 static inline void security_inet_conn_established(struct sock *sk, 1637 struct sk_buff *skb) 1638 { 1639 } 1640 1641 static inline int security_secmark_relabel_packet(u32 secid) 1642 { 1643 return 0; 1644 } 1645 1646 static inline void security_secmark_refcount_inc(void) 1647 { 1648 } 1649 1650 static inline void security_secmark_refcount_dec(void) 1651 { 1652 } 1653 1654 static inline int security_tun_dev_alloc_security(void **security) 1655 { 1656 return 0; 1657 } 1658 1659 static inline void security_tun_dev_free_security(void *security) 1660 { 1661 } 1662 1663 static inline int security_tun_dev_create(void) 1664 { 1665 return 0; 1666 } 1667 1668 static inline int security_tun_dev_attach_queue(void *security) 1669 { 1670 return 0; 1671 } 1672 1673 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1674 { 1675 return 0; 1676 } 1677 1678 static inline int security_tun_dev_open(void *security) 1679 { 1680 return 0; 1681 } 1682 1683 static inline int security_sctp_assoc_request(struct sctp_association *asoc, 1684 struct sk_buff *skb) 1685 { 1686 return 0; 1687 } 1688 1689 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1690 struct sockaddr *address, 1691 int addrlen) 1692 { 1693 return 0; 1694 } 1695 1696 static inline void security_sctp_sk_clone(struct sctp_association *asoc, 1697 struct sock *sk, 1698 struct sock *newsk) 1699 { 1700 } 1701 1702 static inline int security_sctp_assoc_established(struct sctp_association *asoc, 1703 struct sk_buff *skb) 1704 { 1705 return 0; 1706 } 1707 #endif /* CONFIG_SECURITY_NETWORK */ 1708 1709 #ifdef CONFIG_SECURITY_INFINIBAND 1710 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1711 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1712 int security_ib_alloc_security(void **sec); 1713 void security_ib_free_security(void *sec); 1714 #else /* CONFIG_SECURITY_INFINIBAND */ 1715 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1716 { 1717 return 0; 1718 } 1719 1720 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1721 { 1722 return 0; 1723 } 1724 1725 static inline int security_ib_alloc_security(void **sec) 1726 { 1727 return 0; 1728 } 1729 1730 static inline void security_ib_free_security(void *sec) 1731 { 1732 } 1733 #endif /* CONFIG_SECURITY_INFINIBAND */ 1734 1735 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1736 1737 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1738 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1739 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1740 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1741 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1742 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1743 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1744 struct xfrm_sec_ctx *polsec, u32 secid); 1745 int security_xfrm_state_delete(struct xfrm_state *x); 1746 void security_xfrm_state_free(struct xfrm_state *x); 1747 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); 1748 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1749 struct xfrm_policy *xp, 1750 const struct flowi_common *flic); 1751 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1752 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1753 1754 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1755 1756 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1757 struct xfrm_user_sec_ctx *sec_ctx, 1758 gfp_t gfp) 1759 { 1760 return 0; 1761 } 1762 1763 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1764 { 1765 return 0; 1766 } 1767 1768 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1769 { 1770 } 1771 1772 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1773 { 1774 return 0; 1775 } 1776 1777 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1778 struct xfrm_user_sec_ctx *sec_ctx) 1779 { 1780 return 0; 1781 } 1782 1783 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1784 struct xfrm_sec_ctx *polsec, u32 secid) 1785 { 1786 return 0; 1787 } 1788 1789 static inline void security_xfrm_state_free(struct xfrm_state *x) 1790 { 1791 } 1792 1793 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1794 { 1795 return 0; 1796 } 1797 1798 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) 1799 { 1800 return 0; 1801 } 1802 1803 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1804 struct xfrm_policy *xp, 1805 const struct flowi_common *flic) 1806 { 1807 return 1; 1808 } 1809 1810 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1811 { 1812 return 0; 1813 } 1814 1815 static inline void security_skb_classify_flow(struct sk_buff *skb, 1816 struct flowi_common *flic) 1817 { 1818 } 1819 1820 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1821 1822 #ifdef CONFIG_SECURITY_PATH 1823 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1824 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1825 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1826 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1827 unsigned int dev); 1828 int security_path_truncate(const struct path *path); 1829 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1830 const char *old_name); 1831 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1832 struct dentry *new_dentry); 1833 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1834 const struct path *new_dir, struct dentry *new_dentry, 1835 unsigned int flags); 1836 int security_path_chmod(const struct path *path, umode_t mode); 1837 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1838 int security_path_chroot(const struct path *path); 1839 #else /* CONFIG_SECURITY_PATH */ 1840 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1841 { 1842 return 0; 1843 } 1844 1845 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1846 umode_t mode) 1847 { 1848 return 0; 1849 } 1850 1851 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1852 { 1853 return 0; 1854 } 1855 1856 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1857 umode_t mode, unsigned int dev) 1858 { 1859 return 0; 1860 } 1861 1862 static inline int security_path_truncate(const struct path *path) 1863 { 1864 return 0; 1865 } 1866 1867 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1868 const char *old_name) 1869 { 1870 return 0; 1871 } 1872 1873 static inline int security_path_link(struct dentry *old_dentry, 1874 const struct path *new_dir, 1875 struct dentry *new_dentry) 1876 { 1877 return 0; 1878 } 1879 1880 static inline int security_path_rename(const struct path *old_dir, 1881 struct dentry *old_dentry, 1882 const struct path *new_dir, 1883 struct dentry *new_dentry, 1884 unsigned int flags) 1885 { 1886 return 0; 1887 } 1888 1889 static inline int security_path_chmod(const struct path *path, umode_t mode) 1890 { 1891 return 0; 1892 } 1893 1894 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1895 { 1896 return 0; 1897 } 1898 1899 static inline int security_path_chroot(const struct path *path) 1900 { 1901 return 0; 1902 } 1903 #endif /* CONFIG_SECURITY_PATH */ 1904 1905 #ifdef CONFIG_KEYS 1906 #ifdef CONFIG_SECURITY 1907 1908 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1909 void security_key_free(struct key *key); 1910 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1911 enum key_need_perm need_perm); 1912 int security_key_getsecurity(struct key *key, char **_buffer); 1913 1914 #else 1915 1916 static inline int security_key_alloc(struct key *key, 1917 const struct cred *cred, 1918 unsigned long flags) 1919 { 1920 return 0; 1921 } 1922 1923 static inline void security_key_free(struct key *key) 1924 { 1925 } 1926 1927 static inline int security_key_permission(key_ref_t key_ref, 1928 const struct cred *cred, 1929 enum key_need_perm need_perm) 1930 { 1931 return 0; 1932 } 1933 1934 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1935 { 1936 *_buffer = NULL; 1937 return 0; 1938 } 1939 1940 #endif 1941 #endif /* CONFIG_KEYS */ 1942 1943 #ifdef CONFIG_AUDIT 1944 #ifdef CONFIG_SECURITY 1945 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1946 int security_audit_rule_known(struct audit_krule *krule); 1947 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1948 void security_audit_rule_free(void *lsmrule); 1949 1950 #else 1951 1952 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1953 void **lsmrule) 1954 { 1955 return 0; 1956 } 1957 1958 static inline int security_audit_rule_known(struct audit_krule *krule) 1959 { 1960 return 0; 1961 } 1962 1963 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1964 void *lsmrule) 1965 { 1966 return 0; 1967 } 1968 1969 static inline void security_audit_rule_free(void *lsmrule) 1970 { } 1971 1972 #endif /* CONFIG_SECURITY */ 1973 #endif /* CONFIG_AUDIT */ 1974 1975 #ifdef CONFIG_SECURITYFS 1976 1977 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1978 struct dentry *parent, void *data, 1979 const struct file_operations *fops); 1980 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1981 struct dentry *securityfs_create_symlink(const char *name, 1982 struct dentry *parent, 1983 const char *target, 1984 const struct inode_operations *iops); 1985 extern void securityfs_remove(struct dentry *dentry); 1986 1987 #else /* CONFIG_SECURITYFS */ 1988 1989 static inline struct dentry *securityfs_create_dir(const char *name, 1990 struct dentry *parent) 1991 { 1992 return ERR_PTR(-ENODEV); 1993 } 1994 1995 static inline struct dentry *securityfs_create_file(const char *name, 1996 umode_t mode, 1997 struct dentry *parent, 1998 void *data, 1999 const struct file_operations *fops) 2000 { 2001 return ERR_PTR(-ENODEV); 2002 } 2003 2004 static inline struct dentry *securityfs_create_symlink(const char *name, 2005 struct dentry *parent, 2006 const char *target, 2007 const struct inode_operations *iops) 2008 { 2009 return ERR_PTR(-ENODEV); 2010 } 2011 2012 static inline void securityfs_remove(struct dentry *dentry) 2013 {} 2014 2015 #endif 2016 2017 #ifdef CONFIG_BPF_SYSCALL 2018 union bpf_attr; 2019 struct bpf_map; 2020 struct bpf_prog; 2021 struct bpf_prog_aux; 2022 #ifdef CONFIG_SECURITY 2023 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 2024 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 2025 extern int security_bpf_prog(struct bpf_prog *prog); 2026 extern int security_bpf_map_alloc(struct bpf_map *map); 2027 extern void security_bpf_map_free(struct bpf_map *map); 2028 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 2029 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 2030 #else 2031 static inline int security_bpf(int cmd, union bpf_attr *attr, 2032 unsigned int size) 2033 { 2034 return 0; 2035 } 2036 2037 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 2038 { 2039 return 0; 2040 } 2041 2042 static inline int security_bpf_prog(struct bpf_prog *prog) 2043 { 2044 return 0; 2045 } 2046 2047 static inline int security_bpf_map_alloc(struct bpf_map *map) 2048 { 2049 return 0; 2050 } 2051 2052 static inline void security_bpf_map_free(struct bpf_map *map) 2053 { } 2054 2055 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 2056 { 2057 return 0; 2058 } 2059 2060 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 2061 { } 2062 #endif /* CONFIG_SECURITY */ 2063 #endif /* CONFIG_BPF_SYSCALL */ 2064 2065 #ifdef CONFIG_PERF_EVENTS 2066 struct perf_event_attr; 2067 struct perf_event; 2068 2069 #ifdef CONFIG_SECURITY 2070 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 2071 extern int security_perf_event_alloc(struct perf_event *event); 2072 extern void security_perf_event_free(struct perf_event *event); 2073 extern int security_perf_event_read(struct perf_event *event); 2074 extern int security_perf_event_write(struct perf_event *event); 2075 #else 2076 static inline int security_perf_event_open(struct perf_event_attr *attr, 2077 int type) 2078 { 2079 return 0; 2080 } 2081 2082 static inline int security_perf_event_alloc(struct perf_event *event) 2083 { 2084 return 0; 2085 } 2086 2087 static inline void security_perf_event_free(struct perf_event *event) 2088 { 2089 } 2090 2091 static inline int security_perf_event_read(struct perf_event *event) 2092 { 2093 return 0; 2094 } 2095 2096 static inline int security_perf_event_write(struct perf_event *event) 2097 { 2098 return 0; 2099 } 2100 #endif /* CONFIG_SECURITY */ 2101 #endif /* CONFIG_PERF_EVENTS */ 2102 2103 #ifdef CONFIG_IO_URING 2104 #ifdef CONFIG_SECURITY 2105 extern int security_uring_override_creds(const struct cred *new); 2106 extern int security_uring_sqpoll(void); 2107 extern int security_uring_cmd(struct io_uring_cmd *ioucmd); 2108 #else 2109 static inline int security_uring_override_creds(const struct cred *new) 2110 { 2111 return 0; 2112 } 2113 static inline int security_uring_sqpoll(void) 2114 { 2115 return 0; 2116 } 2117 static inline int security_uring_cmd(struct io_uring_cmd *ioucmd) 2118 { 2119 return 0; 2120 } 2121 #endif /* CONFIG_SECURITY */ 2122 #endif /* CONFIG_IO_URING */ 2123 2124 #endif /* ! __LINUX_SECURITY_H */ 2125