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