1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/kernel_read_file.h> 27 #include <linux/key.h> 28 #include <linux/capability.h> 29 #include <linux/fs.h> 30 #include <linux/slab.h> 31 #include <linux/err.h> 32 #include <linux/string.h> 33 #include <linux/mm.h> 34 #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(const struct task_struct *target, kernel_cap_t *effective, 149 kernel_cap_t *inheritable, kernel_cap_t *permitted); 150 extern int cap_capset(struct cred *new, const struct cred *old, 151 const kernel_cap_t *effective, 152 const kernel_cap_t *inheritable, 153 const kernel_cap_t *permitted); 154 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 155 int cap_inode_setxattr(struct dentry *dentry, const char *name, 156 const void *value, size_t size, int flags); 157 int cap_inode_removexattr(struct mnt_idmap *idmap, 158 struct dentry *dentry, const char *name); 159 int cap_inode_need_killpriv(struct dentry *dentry); 160 int cap_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); 161 int cap_inode_getsecurity(struct mnt_idmap *idmap, 162 struct inode *inode, const char *name, void **buffer, 163 bool alloc); 164 extern int cap_mmap_addr(unsigned long addr); 165 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 166 unsigned long prot, unsigned long flags); 167 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 168 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 169 unsigned long arg4, unsigned long arg5); 170 extern int cap_task_setscheduler(struct task_struct *p); 171 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 172 extern int cap_task_setnice(struct task_struct *p, int nice); 173 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 174 175 struct msghdr; 176 struct sk_buff; 177 struct sock; 178 struct sockaddr; 179 struct socket; 180 struct flowi_common; 181 struct dst_entry; 182 struct xfrm_selector; 183 struct xfrm_policy; 184 struct xfrm_state; 185 struct xfrm_user_sec_ctx; 186 struct seq_file; 187 struct sctp_association; 188 189 #ifdef CONFIG_MMU 190 extern unsigned long mmap_min_addr; 191 extern unsigned long dac_mmap_min_addr; 192 #else 193 #define mmap_min_addr 0UL 194 #define dac_mmap_min_addr 0UL 195 #endif 196 197 /* 198 * Values used in the task_security_ops calls 199 */ 200 /* setuid or setgid, id0 == uid or gid */ 201 #define LSM_SETID_ID 1 202 203 /* setreuid or setregid, id0 == real, id1 == eff */ 204 #define LSM_SETID_RE 2 205 206 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 207 #define LSM_SETID_RES 4 208 209 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 210 #define LSM_SETID_FS 8 211 212 /* Flags for security_task_prlimit(). */ 213 #define LSM_PRLIMIT_READ 1 214 #define LSM_PRLIMIT_WRITE 2 215 216 /* forward declares to avoid warnings */ 217 struct sched_param; 218 struct request_sock; 219 220 /* bprm->unsafe reasons */ 221 #define LSM_UNSAFE_SHARE 1 222 #define LSM_UNSAFE_PTRACE 2 223 #define LSM_UNSAFE_NO_NEW_PRIVS 4 224 225 #ifdef CONFIG_MMU 226 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 227 void *buffer, size_t *lenp, loff_t *ppos); 228 #endif 229 230 /* security_inode_init_security callback function to write xattrs */ 231 typedef int (*initxattrs) (struct inode *inode, 232 const struct xattr *xattr_array, void *fs_data); 233 234 235 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 236 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 237 #define __data_id_stringify(dummy, str) #str, 238 239 enum kernel_load_data_id { 240 __kernel_read_file_id(__data_id_enumify) 241 }; 242 243 static const char * const kernel_load_data_str[] = { 244 __kernel_read_file_id(__data_id_stringify) 245 }; 246 247 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 248 { 249 if ((unsigned)id >= LOADING_MAX_ID) 250 return kernel_load_data_str[LOADING_UNKNOWN]; 251 252 return kernel_load_data_str[id]; 253 } 254 255 #ifdef CONFIG_SECURITY 256 257 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 258 int register_blocking_lsm_notifier(struct notifier_block *nb); 259 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 260 261 /* prototypes */ 262 extern int security_init(void); 263 extern int early_security_init(void); 264 265 /* Security operations */ 266 int security_binder_set_context_mgr(const struct cred *mgr); 267 int security_binder_transaction(const struct cred *from, 268 const struct cred *to); 269 int security_binder_transfer_binder(const struct cred *from, 270 const struct cred *to); 271 int security_binder_transfer_file(const struct cred *from, 272 const struct cred *to, const struct file *file); 273 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 274 int security_ptrace_traceme(struct task_struct *parent); 275 int security_capget(const struct task_struct *target, 276 kernel_cap_t *effective, 277 kernel_cap_t *inheritable, 278 kernel_cap_t *permitted); 279 int security_capset(struct cred *new, const struct cred *old, 280 const kernel_cap_t *effective, 281 const kernel_cap_t *inheritable, 282 const kernel_cap_t *permitted); 283 int security_capable(const struct cred *cred, 284 struct user_namespace *ns, 285 int cap, 286 unsigned int opts); 287 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 288 int security_quota_on(struct dentry *dentry); 289 int security_syslog(int type); 290 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 291 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 292 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 293 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 294 int security_bprm_check(struct linux_binprm *bprm); 295 void security_bprm_committing_creds(struct linux_binprm *bprm); 296 void security_bprm_committed_creds(struct linux_binprm *bprm); 297 int security_fs_context_submount(struct fs_context *fc, struct super_block *reference); 298 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 299 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 300 int security_sb_alloc(struct super_block *sb); 301 void security_sb_delete(struct super_block *sb); 302 void security_sb_free(struct super_block *sb); 303 void security_free_mnt_opts(void **mnt_opts); 304 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 305 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); 306 int security_sb_remount(struct super_block *sb, void *mnt_opts); 307 int security_sb_kern_mount(struct super_block *sb); 308 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 309 int security_sb_statfs(struct dentry *dentry); 310 int security_sb_mount(const char *dev_name, const struct path *path, 311 const char *type, unsigned long flags, void *data); 312 int security_sb_umount(struct vfsmount *mnt, int flags); 313 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 314 int security_sb_set_mnt_opts(struct super_block *sb, 315 void *mnt_opts, 316 unsigned long kern_flags, 317 unsigned long *set_kern_flags); 318 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 319 struct super_block *newsb, 320 unsigned long kern_flags, 321 unsigned long *set_kern_flags); 322 int security_move_mount(const struct path *from_path, const struct path *to_path); 323 int security_dentry_init_security(struct dentry *dentry, int mode, 324 const struct qstr *name, 325 const char **xattr_name, void **ctx, 326 u32 *ctxlen); 327 int security_dentry_create_files_as(struct dentry *dentry, int mode, 328 struct qstr *name, 329 const struct cred *old, 330 struct cred *new); 331 int security_path_notify(const struct path *path, u64 mask, 332 unsigned int obj_type); 333 int security_inode_alloc(struct inode *inode); 334 void security_inode_free(struct inode *inode); 335 int security_inode_init_security(struct inode *inode, struct inode *dir, 336 const struct qstr *qstr, 337 initxattrs initxattrs, void *fs_data); 338 int security_inode_init_security_anon(struct inode *inode, 339 const struct qstr *name, 340 const struct inode *context_inode); 341 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 342 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 343 struct dentry *new_dentry); 344 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 345 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 346 const char *old_name); 347 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 348 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 349 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 350 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 351 struct inode *new_dir, struct dentry *new_dentry, 352 unsigned int flags); 353 int security_inode_readlink(struct dentry *dentry); 354 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 355 bool rcu); 356 int security_inode_permission(struct inode *inode, int mask); 357 int security_inode_setattr(struct mnt_idmap *idmap, 358 struct dentry *dentry, struct iattr *attr); 359 int security_inode_getattr(const struct path *path); 360 int security_inode_setxattr(struct mnt_idmap *idmap, 361 struct dentry *dentry, const char *name, 362 const void *value, size_t size, int flags); 363 int security_inode_set_acl(struct mnt_idmap *idmap, 364 struct dentry *dentry, const char *acl_name, 365 struct posix_acl *kacl); 366 int security_inode_get_acl(struct mnt_idmap *idmap, 367 struct dentry *dentry, const char *acl_name); 368 int security_inode_remove_acl(struct mnt_idmap *idmap, 369 struct dentry *dentry, const char *acl_name); 370 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 371 const void *value, size_t size, int flags); 372 int security_inode_getxattr(struct dentry *dentry, const char *name); 373 int security_inode_listxattr(struct dentry *dentry); 374 int security_inode_removexattr(struct mnt_idmap *idmap, 375 struct dentry *dentry, const char *name); 376 int security_inode_need_killpriv(struct dentry *dentry); 377 int security_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); 378 int security_inode_getsecurity(struct mnt_idmap *idmap, 379 struct inode *inode, const char *name, 380 void **buffer, bool alloc); 381 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 382 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 383 void security_inode_getsecid(struct inode *inode, u32 *secid); 384 int security_inode_copy_up(struct dentry *src, struct cred **new); 385 int security_inode_copy_up_xattr(const char *name); 386 int security_kernfs_init_security(struct kernfs_node *kn_dir, 387 struct kernfs_node *kn); 388 int security_file_permission(struct file *file, int mask); 389 int security_file_alloc(struct file *file); 390 void security_file_free(struct file *file); 391 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 392 int security_mmap_file(struct file *file, unsigned long prot, 393 unsigned long flags); 394 int security_mmap_addr(unsigned long addr); 395 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 396 unsigned long prot); 397 int security_file_lock(struct file *file, unsigned int cmd); 398 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 399 void security_file_set_fowner(struct file *file); 400 int security_file_send_sigiotask(struct task_struct *tsk, 401 struct fown_struct *fown, int sig); 402 int security_file_receive(struct file *file); 403 int security_file_open(struct file *file); 404 int security_file_truncate(struct file *file); 405 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 406 void security_task_free(struct task_struct *task); 407 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 408 void security_cred_free(struct cred *cred); 409 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 410 void security_transfer_creds(struct cred *new, const struct cred *old); 411 void security_cred_getsecid(const struct cred *c, u32 *secid); 412 int security_kernel_act_as(struct cred *new, u32 secid); 413 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 414 int security_kernel_module_request(char *kmod_name); 415 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 416 int security_kernel_post_load_data(char *buf, loff_t size, 417 enum kernel_load_data_id id, 418 char *description); 419 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 420 bool contents); 421 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 422 enum kernel_read_file_id id); 423 int security_task_fix_setuid(struct cred *new, const struct cred *old, 424 int flags); 425 int security_task_fix_setgid(struct cred *new, const struct cred *old, 426 int flags); 427 int security_task_fix_setgroups(struct cred *new, const struct cred *old); 428 int security_task_setpgid(struct task_struct *p, pid_t pgid); 429 int security_task_getpgid(struct task_struct *p); 430 int security_task_getsid(struct task_struct *p); 431 void security_current_getsecid_subj(u32 *secid); 432 void security_task_getsecid_obj(struct task_struct *p, u32 *secid); 433 int security_task_setnice(struct task_struct *p, int nice); 434 int security_task_setioprio(struct task_struct *p, int ioprio); 435 int security_task_getioprio(struct task_struct *p); 436 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 437 unsigned int flags); 438 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 439 struct rlimit *new_rlim); 440 int security_task_setscheduler(struct task_struct *p); 441 int security_task_getscheduler(struct task_struct *p); 442 int security_task_movememory(struct task_struct *p); 443 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 444 int sig, const struct cred *cred); 445 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 446 unsigned long arg4, unsigned long arg5); 447 void security_task_to_inode(struct task_struct *p, struct inode *inode); 448 int security_create_user_ns(const struct cred *cred); 449 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 450 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 451 int security_msg_msg_alloc(struct msg_msg *msg); 452 void security_msg_msg_free(struct msg_msg *msg); 453 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 454 void security_msg_queue_free(struct kern_ipc_perm *msq); 455 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 456 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 457 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 458 struct msg_msg *msg, int msqflg); 459 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 460 struct task_struct *target, long type, int mode); 461 int security_shm_alloc(struct kern_ipc_perm *shp); 462 void security_shm_free(struct kern_ipc_perm *shp); 463 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 464 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 465 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 466 int security_sem_alloc(struct kern_ipc_perm *sma); 467 void security_sem_free(struct kern_ipc_perm *sma); 468 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 469 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 470 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 471 unsigned nsops, int alter); 472 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 473 int security_getprocattr(struct task_struct *p, const char *lsm, const char *name, 474 char **value); 475 int security_setprocattr(const char *lsm, const char *name, void *value, 476 size_t size); 477 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 478 int security_ismaclabel(const char *name); 479 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 480 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 481 void security_release_secctx(char *secdata, u32 seclen); 482 void security_inode_invalidate_secctx(struct inode *inode); 483 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 484 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 485 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 486 int security_locked_down(enum lockdown_reason what); 487 #else /* CONFIG_SECURITY */ 488 489 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 490 { 491 return 0; 492 } 493 494 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 495 { 496 return 0; 497 } 498 499 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 500 { 501 return 0; 502 } 503 504 static inline void security_free_mnt_opts(void **mnt_opts) 505 { 506 } 507 508 /* 509 * This is the default capabilities functionality. Most of these functions 510 * are just stubbed out, but a few must call the proper capable code. 511 */ 512 513 static inline int security_init(void) 514 { 515 return 0; 516 } 517 518 static inline int early_security_init(void) 519 { 520 return 0; 521 } 522 523 static inline int security_binder_set_context_mgr(const struct cred *mgr) 524 { 525 return 0; 526 } 527 528 static inline int security_binder_transaction(const struct cred *from, 529 const struct cred *to) 530 { 531 return 0; 532 } 533 534 static inline int security_binder_transfer_binder(const struct cred *from, 535 const struct cred *to) 536 { 537 return 0; 538 } 539 540 static inline int security_binder_transfer_file(const struct cred *from, 541 const struct cred *to, 542 const struct file *file) 543 { 544 return 0; 545 } 546 547 static inline int security_ptrace_access_check(struct task_struct *child, 548 unsigned int mode) 549 { 550 return cap_ptrace_access_check(child, mode); 551 } 552 553 static inline int security_ptrace_traceme(struct task_struct *parent) 554 { 555 return cap_ptrace_traceme(parent); 556 } 557 558 static inline int security_capget(const struct task_struct *target, 559 kernel_cap_t *effective, 560 kernel_cap_t *inheritable, 561 kernel_cap_t *permitted) 562 { 563 return cap_capget(target, effective, inheritable, permitted); 564 } 565 566 static inline int security_capset(struct cred *new, 567 const struct cred *old, 568 const kernel_cap_t *effective, 569 const kernel_cap_t *inheritable, 570 const kernel_cap_t *permitted) 571 { 572 return cap_capset(new, old, effective, inheritable, permitted); 573 } 574 575 static inline int security_capable(const struct cred *cred, 576 struct user_namespace *ns, 577 int cap, 578 unsigned int opts) 579 { 580 return cap_capable(cred, ns, cap, opts); 581 } 582 583 static inline int security_quotactl(int cmds, int type, int id, 584 struct super_block *sb) 585 { 586 return 0; 587 } 588 589 static inline int security_quota_on(struct dentry *dentry) 590 { 591 return 0; 592 } 593 594 static inline int security_syslog(int type) 595 { 596 return 0; 597 } 598 599 static inline int security_settime64(const struct timespec64 *ts, 600 const struct timezone *tz) 601 { 602 return cap_settime(ts, tz); 603 } 604 605 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 606 { 607 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 608 } 609 610 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 611 { 612 return 0; 613 } 614 615 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 616 struct file *file) 617 { 618 return cap_bprm_creds_from_file(bprm, file); 619 } 620 621 static inline int security_bprm_check(struct linux_binprm *bprm) 622 { 623 return 0; 624 } 625 626 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 627 { 628 } 629 630 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 631 { 632 } 633 634 static inline int security_fs_context_submount(struct fs_context *fc, 635 struct super_block *reference) 636 { 637 return 0; 638 } 639 static inline int security_fs_context_dup(struct fs_context *fc, 640 struct fs_context *src_fc) 641 { 642 return 0; 643 } 644 static inline int security_fs_context_parse_param(struct fs_context *fc, 645 struct fs_parameter *param) 646 { 647 return -ENOPARAM; 648 } 649 650 static inline int security_sb_alloc(struct super_block *sb) 651 { 652 return 0; 653 } 654 655 static inline void security_sb_delete(struct super_block *sb) 656 { } 657 658 static inline void security_sb_free(struct super_block *sb) 659 { } 660 661 static inline int security_sb_eat_lsm_opts(char *options, 662 void **mnt_opts) 663 { 664 return 0; 665 } 666 667 static inline int security_sb_remount(struct super_block *sb, 668 void *mnt_opts) 669 { 670 return 0; 671 } 672 673 static inline int security_sb_mnt_opts_compat(struct super_block *sb, 674 void *mnt_opts) 675 { 676 return 0; 677 } 678 679 680 static inline int security_sb_kern_mount(struct super_block *sb) 681 { 682 return 0; 683 } 684 685 static inline int security_sb_show_options(struct seq_file *m, 686 struct super_block *sb) 687 { 688 return 0; 689 } 690 691 static inline int security_sb_statfs(struct dentry *dentry) 692 { 693 return 0; 694 } 695 696 static inline int security_sb_mount(const char *dev_name, const struct path *path, 697 const char *type, unsigned long flags, 698 void *data) 699 { 700 return 0; 701 } 702 703 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 704 { 705 return 0; 706 } 707 708 static inline int security_sb_pivotroot(const struct path *old_path, 709 const struct path *new_path) 710 { 711 return 0; 712 } 713 714 static inline int security_sb_set_mnt_opts(struct super_block *sb, 715 void *mnt_opts, 716 unsigned long kern_flags, 717 unsigned long *set_kern_flags) 718 { 719 return 0; 720 } 721 722 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 723 struct super_block *newsb, 724 unsigned long kern_flags, 725 unsigned long *set_kern_flags) 726 { 727 return 0; 728 } 729 730 static inline int security_move_mount(const struct path *from_path, 731 const struct path *to_path) 732 { 733 return 0; 734 } 735 736 static inline int security_path_notify(const struct path *path, u64 mask, 737 unsigned int obj_type) 738 { 739 return 0; 740 } 741 742 static inline int security_inode_alloc(struct inode *inode) 743 { 744 return 0; 745 } 746 747 static inline void security_inode_free(struct inode *inode) 748 { } 749 750 static inline int security_dentry_init_security(struct dentry *dentry, 751 int mode, 752 const struct qstr *name, 753 const char **xattr_name, 754 void **ctx, 755 u32 *ctxlen) 756 { 757 return -EOPNOTSUPP; 758 } 759 760 static inline int security_dentry_create_files_as(struct dentry *dentry, 761 int mode, struct qstr *name, 762 const struct cred *old, 763 struct cred *new) 764 { 765 return 0; 766 } 767 768 769 static inline int security_inode_init_security(struct inode *inode, 770 struct inode *dir, 771 const struct qstr *qstr, 772 const initxattrs xattrs, 773 void *fs_data) 774 { 775 return 0; 776 } 777 778 static inline int security_inode_init_security_anon(struct inode *inode, 779 const struct qstr *name, 780 const struct inode *context_inode) 781 { 782 return 0; 783 } 784 785 static inline int security_inode_create(struct inode *dir, 786 struct dentry *dentry, 787 umode_t mode) 788 { 789 return 0; 790 } 791 792 static inline int security_inode_link(struct dentry *old_dentry, 793 struct inode *dir, 794 struct dentry *new_dentry) 795 { 796 return 0; 797 } 798 799 static inline int security_inode_unlink(struct inode *dir, 800 struct dentry *dentry) 801 { 802 return 0; 803 } 804 805 static inline int security_inode_symlink(struct inode *dir, 806 struct dentry *dentry, 807 const char *old_name) 808 { 809 return 0; 810 } 811 812 static inline int security_inode_mkdir(struct inode *dir, 813 struct dentry *dentry, 814 int mode) 815 { 816 return 0; 817 } 818 819 static inline int security_inode_rmdir(struct inode *dir, 820 struct dentry *dentry) 821 { 822 return 0; 823 } 824 825 static inline int security_inode_mknod(struct inode *dir, 826 struct dentry *dentry, 827 int mode, dev_t dev) 828 { 829 return 0; 830 } 831 832 static inline int security_inode_rename(struct inode *old_dir, 833 struct dentry *old_dentry, 834 struct inode *new_dir, 835 struct dentry *new_dentry, 836 unsigned int flags) 837 { 838 return 0; 839 } 840 841 static inline int security_inode_readlink(struct dentry *dentry) 842 { 843 return 0; 844 } 845 846 static inline int security_inode_follow_link(struct dentry *dentry, 847 struct inode *inode, 848 bool rcu) 849 { 850 return 0; 851 } 852 853 static inline int security_inode_permission(struct inode *inode, int mask) 854 { 855 return 0; 856 } 857 858 static inline int security_inode_setattr(struct mnt_idmap *idmap, 859 struct dentry *dentry, 860 struct iattr *attr) 861 { 862 return 0; 863 } 864 865 static inline int security_inode_getattr(const struct path *path) 866 { 867 return 0; 868 } 869 870 static inline int security_inode_setxattr(struct mnt_idmap *idmap, 871 struct dentry *dentry, const char *name, const void *value, 872 size_t size, int flags) 873 { 874 return cap_inode_setxattr(dentry, name, value, size, flags); 875 } 876 877 static inline int security_inode_set_acl(struct mnt_idmap *idmap, 878 struct dentry *dentry, 879 const char *acl_name, 880 struct posix_acl *kacl) 881 { 882 return 0; 883 } 884 885 static inline int security_inode_get_acl(struct mnt_idmap *idmap, 886 struct dentry *dentry, 887 const char *acl_name) 888 { 889 return 0; 890 } 891 892 static inline int security_inode_remove_acl(struct mnt_idmap *idmap, 893 struct dentry *dentry, 894 const char *acl_name) 895 { 896 return 0; 897 } 898 899 static inline void security_inode_post_setxattr(struct dentry *dentry, 900 const char *name, const void *value, size_t size, int flags) 901 { } 902 903 static inline int security_inode_getxattr(struct dentry *dentry, 904 const char *name) 905 { 906 return 0; 907 } 908 909 static inline int security_inode_listxattr(struct dentry *dentry) 910 { 911 return 0; 912 } 913 914 static inline int security_inode_removexattr(struct mnt_idmap *idmap, 915 struct dentry *dentry, 916 const char *name) 917 { 918 return cap_inode_removexattr(idmap, dentry, name); 919 } 920 921 static inline int security_inode_need_killpriv(struct dentry *dentry) 922 { 923 return cap_inode_need_killpriv(dentry); 924 } 925 926 static inline int security_inode_killpriv(struct mnt_idmap *idmap, 927 struct dentry *dentry) 928 { 929 return cap_inode_killpriv(idmap, dentry); 930 } 931 932 static inline int security_inode_getsecurity(struct mnt_idmap *idmap, 933 struct inode *inode, 934 const char *name, void **buffer, 935 bool alloc) 936 { 937 return cap_inode_getsecurity(idmap, inode, name, buffer, alloc); 938 } 939 940 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 941 { 942 return -EOPNOTSUPP; 943 } 944 945 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 946 { 947 return 0; 948 } 949 950 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 951 { 952 *secid = 0; 953 } 954 955 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 956 { 957 return 0; 958 } 959 960 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 961 struct kernfs_node *kn) 962 { 963 return 0; 964 } 965 966 static inline int security_inode_copy_up_xattr(const char *name) 967 { 968 return -EOPNOTSUPP; 969 } 970 971 static inline int security_file_permission(struct file *file, int mask) 972 { 973 return 0; 974 } 975 976 static inline int security_file_alloc(struct file *file) 977 { 978 return 0; 979 } 980 981 static inline void security_file_free(struct file *file) 982 { } 983 984 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 985 unsigned long arg) 986 { 987 return 0; 988 } 989 990 static inline int security_mmap_file(struct file *file, unsigned long prot, 991 unsigned long flags) 992 { 993 return 0; 994 } 995 996 static inline int security_mmap_addr(unsigned long addr) 997 { 998 return cap_mmap_addr(addr); 999 } 1000 1001 static inline int security_file_mprotect(struct vm_area_struct *vma, 1002 unsigned long reqprot, 1003 unsigned long prot) 1004 { 1005 return 0; 1006 } 1007 1008 static inline int security_file_lock(struct file *file, unsigned int cmd) 1009 { 1010 return 0; 1011 } 1012 1013 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 1014 unsigned long arg) 1015 { 1016 return 0; 1017 } 1018 1019 static inline void security_file_set_fowner(struct file *file) 1020 { 1021 return; 1022 } 1023 1024 static inline int security_file_send_sigiotask(struct task_struct *tsk, 1025 struct fown_struct *fown, 1026 int sig) 1027 { 1028 return 0; 1029 } 1030 1031 static inline int security_file_receive(struct file *file) 1032 { 1033 return 0; 1034 } 1035 1036 static inline int security_file_open(struct file *file) 1037 { 1038 return 0; 1039 } 1040 1041 static inline int security_file_truncate(struct file *file) 1042 { 1043 return 0; 1044 } 1045 1046 static inline int security_task_alloc(struct task_struct *task, 1047 unsigned long clone_flags) 1048 { 1049 return 0; 1050 } 1051 1052 static inline void security_task_free(struct task_struct *task) 1053 { } 1054 1055 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1056 { 1057 return 0; 1058 } 1059 1060 static inline void security_cred_free(struct cred *cred) 1061 { } 1062 1063 static inline int security_prepare_creds(struct cred *new, 1064 const struct cred *old, 1065 gfp_t gfp) 1066 { 1067 return 0; 1068 } 1069 1070 static inline void security_transfer_creds(struct cred *new, 1071 const struct cred *old) 1072 { 1073 } 1074 1075 static inline void security_cred_getsecid(const struct cred *c, u32 *secid) 1076 { 1077 *secid = 0; 1078 } 1079 1080 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1081 { 1082 return 0; 1083 } 1084 1085 static inline int security_kernel_create_files_as(struct cred *cred, 1086 struct inode *inode) 1087 { 1088 return 0; 1089 } 1090 1091 static inline int security_kernel_module_request(char *kmod_name) 1092 { 1093 return 0; 1094 } 1095 1096 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1097 { 1098 return 0; 1099 } 1100 1101 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1102 enum kernel_load_data_id id, 1103 char *description) 1104 { 1105 return 0; 1106 } 1107 1108 static inline int security_kernel_read_file(struct file *file, 1109 enum kernel_read_file_id id, 1110 bool contents) 1111 { 1112 return 0; 1113 } 1114 1115 static inline int security_kernel_post_read_file(struct file *file, 1116 char *buf, loff_t size, 1117 enum kernel_read_file_id id) 1118 { 1119 return 0; 1120 } 1121 1122 static inline int security_task_fix_setuid(struct cred *new, 1123 const struct cred *old, 1124 int flags) 1125 { 1126 return cap_task_fix_setuid(new, old, flags); 1127 } 1128 1129 static inline int security_task_fix_setgid(struct cred *new, 1130 const struct cred *old, 1131 int flags) 1132 { 1133 return 0; 1134 } 1135 1136 static inline int security_task_fix_setgroups(struct cred *new, 1137 const struct cred *old) 1138 { 1139 return 0; 1140 } 1141 1142 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1143 { 1144 return 0; 1145 } 1146 1147 static inline int security_task_getpgid(struct task_struct *p) 1148 { 1149 return 0; 1150 } 1151 1152 static inline int security_task_getsid(struct task_struct *p) 1153 { 1154 return 0; 1155 } 1156 1157 static inline void security_current_getsecid_subj(u32 *secid) 1158 { 1159 *secid = 0; 1160 } 1161 1162 static inline void security_task_getsecid_obj(struct task_struct *p, u32 *secid) 1163 { 1164 *secid = 0; 1165 } 1166 1167 static inline int security_task_setnice(struct task_struct *p, int nice) 1168 { 1169 return cap_task_setnice(p, nice); 1170 } 1171 1172 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1173 { 1174 return cap_task_setioprio(p, ioprio); 1175 } 1176 1177 static inline int security_task_getioprio(struct task_struct *p) 1178 { 1179 return 0; 1180 } 1181 1182 static inline int security_task_prlimit(const struct cred *cred, 1183 const struct cred *tcred, 1184 unsigned int flags) 1185 { 1186 return 0; 1187 } 1188 1189 static inline int security_task_setrlimit(struct task_struct *p, 1190 unsigned int resource, 1191 struct rlimit *new_rlim) 1192 { 1193 return 0; 1194 } 1195 1196 static inline int security_task_setscheduler(struct task_struct *p) 1197 { 1198 return cap_task_setscheduler(p); 1199 } 1200 1201 static inline int security_task_getscheduler(struct task_struct *p) 1202 { 1203 return 0; 1204 } 1205 1206 static inline int security_task_movememory(struct task_struct *p) 1207 { 1208 return 0; 1209 } 1210 1211 static inline int security_task_kill(struct task_struct *p, 1212 struct kernel_siginfo *info, int sig, 1213 const struct cred *cred) 1214 { 1215 return 0; 1216 } 1217 1218 static inline int security_task_prctl(int option, unsigned long arg2, 1219 unsigned long arg3, 1220 unsigned long arg4, 1221 unsigned long arg5) 1222 { 1223 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1224 } 1225 1226 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1227 { } 1228 1229 static inline int security_create_user_ns(const struct cred *cred) 1230 { 1231 return 0; 1232 } 1233 1234 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1235 short flag) 1236 { 1237 return 0; 1238 } 1239 1240 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1241 { 1242 *secid = 0; 1243 } 1244 1245 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1246 { 1247 return 0; 1248 } 1249 1250 static inline void security_msg_msg_free(struct msg_msg *msg) 1251 { } 1252 1253 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1254 { 1255 return 0; 1256 } 1257 1258 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1259 { } 1260 1261 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1262 int msqflg) 1263 { 1264 return 0; 1265 } 1266 1267 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1268 { 1269 return 0; 1270 } 1271 1272 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1273 struct msg_msg *msg, int msqflg) 1274 { 1275 return 0; 1276 } 1277 1278 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1279 struct msg_msg *msg, 1280 struct task_struct *target, 1281 long type, int mode) 1282 { 1283 return 0; 1284 } 1285 1286 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1287 { 1288 return 0; 1289 } 1290 1291 static inline void security_shm_free(struct kern_ipc_perm *shp) 1292 { } 1293 1294 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1295 int shmflg) 1296 { 1297 return 0; 1298 } 1299 1300 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1301 { 1302 return 0; 1303 } 1304 1305 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1306 char __user *shmaddr, int shmflg) 1307 { 1308 return 0; 1309 } 1310 1311 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1312 { 1313 return 0; 1314 } 1315 1316 static inline void security_sem_free(struct kern_ipc_perm *sma) 1317 { } 1318 1319 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1320 { 1321 return 0; 1322 } 1323 1324 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1325 { 1326 return 0; 1327 } 1328 1329 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1330 struct sembuf *sops, unsigned nsops, 1331 int alter) 1332 { 1333 return 0; 1334 } 1335 1336 static inline void security_d_instantiate(struct dentry *dentry, 1337 struct inode *inode) 1338 { } 1339 1340 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1341 const char *name, char **value) 1342 { 1343 return -EINVAL; 1344 } 1345 1346 static inline int security_setprocattr(const char *lsm, char *name, 1347 void *value, size_t size) 1348 { 1349 return -EINVAL; 1350 } 1351 1352 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1353 { 1354 return 0; 1355 } 1356 1357 static inline int security_ismaclabel(const char *name) 1358 { 1359 return 0; 1360 } 1361 1362 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1363 { 1364 return -EOPNOTSUPP; 1365 } 1366 1367 static inline int security_secctx_to_secid(const char *secdata, 1368 u32 seclen, 1369 u32 *secid) 1370 { 1371 return -EOPNOTSUPP; 1372 } 1373 1374 static inline void security_release_secctx(char *secdata, u32 seclen) 1375 { 1376 } 1377 1378 static inline void security_inode_invalidate_secctx(struct inode *inode) 1379 { 1380 } 1381 1382 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1383 { 1384 return -EOPNOTSUPP; 1385 } 1386 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1387 { 1388 return -EOPNOTSUPP; 1389 } 1390 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1391 { 1392 return -EOPNOTSUPP; 1393 } 1394 static inline int security_locked_down(enum lockdown_reason what) 1395 { 1396 return 0; 1397 } 1398 #endif /* CONFIG_SECURITY */ 1399 1400 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1401 int security_post_notification(const struct cred *w_cred, 1402 const struct cred *cred, 1403 struct watch_notification *n); 1404 #else 1405 static inline int security_post_notification(const struct cred *w_cred, 1406 const struct cred *cred, 1407 struct watch_notification *n) 1408 { 1409 return 0; 1410 } 1411 #endif 1412 1413 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1414 int security_watch_key(struct key *key); 1415 #else 1416 static inline int security_watch_key(struct key *key) 1417 { 1418 return 0; 1419 } 1420 #endif 1421 1422 #ifdef CONFIG_SECURITY_NETWORK 1423 1424 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1425 int security_unix_may_send(struct socket *sock, struct socket *other); 1426 int security_socket_create(int family, int type, int protocol, int kern); 1427 int security_socket_post_create(struct socket *sock, int family, 1428 int type, int protocol, int kern); 1429 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1430 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1431 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1432 int security_socket_listen(struct socket *sock, int backlog); 1433 int security_socket_accept(struct socket *sock, struct socket *newsock); 1434 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1435 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1436 int size, int flags); 1437 int security_socket_getsockname(struct socket *sock); 1438 int security_socket_getpeername(struct socket *sock); 1439 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1440 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1441 int security_socket_shutdown(struct socket *sock, int how); 1442 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1443 int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval, 1444 sockptr_t optlen, unsigned int len); 1445 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1446 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1447 void security_sk_free(struct sock *sk); 1448 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1449 void security_sk_classify_flow(const struct sock *sk, 1450 struct flowi_common *flic); 1451 void security_req_classify_flow(const struct request_sock *req, 1452 struct flowi_common *flic); 1453 void security_sock_graft(struct sock*sk, struct socket *parent); 1454 int security_inet_conn_request(const struct sock *sk, 1455 struct sk_buff *skb, struct request_sock *req); 1456 void security_inet_csk_clone(struct sock *newsk, 1457 const struct request_sock *req); 1458 void security_inet_conn_established(struct sock *sk, 1459 struct sk_buff *skb); 1460 int security_secmark_relabel_packet(u32 secid); 1461 void security_secmark_refcount_inc(void); 1462 void security_secmark_refcount_dec(void); 1463 int security_tun_dev_alloc_security(void **security); 1464 void security_tun_dev_free_security(void *security); 1465 int security_tun_dev_create(void); 1466 int security_tun_dev_attach_queue(void *security); 1467 int security_tun_dev_attach(struct sock *sk, void *security); 1468 int security_tun_dev_open(void *security); 1469 int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb); 1470 int security_sctp_bind_connect(struct sock *sk, int optname, 1471 struct sockaddr *address, int addrlen); 1472 void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, 1473 struct sock *newsk); 1474 int security_sctp_assoc_established(struct sctp_association *asoc, 1475 struct sk_buff *skb); 1476 int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk); 1477 1478 #else /* CONFIG_SECURITY_NETWORK */ 1479 static inline int security_unix_stream_connect(struct sock *sock, 1480 struct sock *other, 1481 struct sock *newsk) 1482 { 1483 return 0; 1484 } 1485 1486 static inline int security_unix_may_send(struct socket *sock, 1487 struct socket *other) 1488 { 1489 return 0; 1490 } 1491 1492 static inline int security_socket_create(int family, int type, 1493 int protocol, int kern) 1494 { 1495 return 0; 1496 } 1497 1498 static inline int security_socket_post_create(struct socket *sock, 1499 int family, 1500 int type, 1501 int protocol, int kern) 1502 { 1503 return 0; 1504 } 1505 1506 static inline int security_socket_socketpair(struct socket *socka, 1507 struct socket *sockb) 1508 { 1509 return 0; 1510 } 1511 1512 static inline int security_socket_bind(struct socket *sock, 1513 struct sockaddr *address, 1514 int addrlen) 1515 { 1516 return 0; 1517 } 1518 1519 static inline int security_socket_connect(struct socket *sock, 1520 struct sockaddr *address, 1521 int addrlen) 1522 { 1523 return 0; 1524 } 1525 1526 static inline int security_socket_listen(struct socket *sock, int backlog) 1527 { 1528 return 0; 1529 } 1530 1531 static inline int security_socket_accept(struct socket *sock, 1532 struct socket *newsock) 1533 { 1534 return 0; 1535 } 1536 1537 static inline int security_socket_sendmsg(struct socket *sock, 1538 struct msghdr *msg, int size) 1539 { 1540 return 0; 1541 } 1542 1543 static inline int security_socket_recvmsg(struct socket *sock, 1544 struct msghdr *msg, int size, 1545 int flags) 1546 { 1547 return 0; 1548 } 1549 1550 static inline int security_socket_getsockname(struct socket *sock) 1551 { 1552 return 0; 1553 } 1554 1555 static inline int security_socket_getpeername(struct socket *sock) 1556 { 1557 return 0; 1558 } 1559 1560 static inline int security_socket_getsockopt(struct socket *sock, 1561 int level, int optname) 1562 { 1563 return 0; 1564 } 1565 1566 static inline int security_socket_setsockopt(struct socket *sock, 1567 int level, int optname) 1568 { 1569 return 0; 1570 } 1571 1572 static inline int security_socket_shutdown(struct socket *sock, int how) 1573 { 1574 return 0; 1575 } 1576 static inline int security_sock_rcv_skb(struct sock *sk, 1577 struct sk_buff *skb) 1578 { 1579 return 0; 1580 } 1581 1582 static inline int security_socket_getpeersec_stream(struct socket *sock, 1583 sockptr_t optval, 1584 sockptr_t optlen, 1585 unsigned int len) 1586 { 1587 return -ENOPROTOOPT; 1588 } 1589 1590 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1591 { 1592 return -ENOPROTOOPT; 1593 } 1594 1595 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1596 { 1597 return 0; 1598 } 1599 1600 static inline void security_sk_free(struct sock *sk) 1601 { 1602 } 1603 1604 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1605 { 1606 } 1607 1608 static inline void security_sk_classify_flow(const struct sock *sk, 1609 struct flowi_common *flic) 1610 { 1611 } 1612 1613 static inline void security_req_classify_flow(const struct request_sock *req, 1614 struct flowi_common *flic) 1615 { 1616 } 1617 1618 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1619 { 1620 } 1621 1622 static inline int security_inet_conn_request(const struct sock *sk, 1623 struct sk_buff *skb, struct request_sock *req) 1624 { 1625 return 0; 1626 } 1627 1628 static inline void security_inet_csk_clone(struct sock *newsk, 1629 const struct request_sock *req) 1630 { 1631 } 1632 1633 static inline void security_inet_conn_established(struct sock *sk, 1634 struct sk_buff *skb) 1635 { 1636 } 1637 1638 static inline int security_secmark_relabel_packet(u32 secid) 1639 { 1640 return 0; 1641 } 1642 1643 static inline void security_secmark_refcount_inc(void) 1644 { 1645 } 1646 1647 static inline void security_secmark_refcount_dec(void) 1648 { 1649 } 1650 1651 static inline int security_tun_dev_alloc_security(void **security) 1652 { 1653 return 0; 1654 } 1655 1656 static inline void security_tun_dev_free_security(void *security) 1657 { 1658 } 1659 1660 static inline int security_tun_dev_create(void) 1661 { 1662 return 0; 1663 } 1664 1665 static inline int security_tun_dev_attach_queue(void *security) 1666 { 1667 return 0; 1668 } 1669 1670 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1671 { 1672 return 0; 1673 } 1674 1675 static inline int security_tun_dev_open(void *security) 1676 { 1677 return 0; 1678 } 1679 1680 static inline int security_sctp_assoc_request(struct sctp_association *asoc, 1681 struct sk_buff *skb) 1682 { 1683 return 0; 1684 } 1685 1686 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1687 struct sockaddr *address, 1688 int addrlen) 1689 { 1690 return 0; 1691 } 1692 1693 static inline void security_sctp_sk_clone(struct sctp_association *asoc, 1694 struct sock *sk, 1695 struct sock *newsk) 1696 { 1697 } 1698 1699 static inline int security_sctp_assoc_established(struct sctp_association *asoc, 1700 struct sk_buff *skb) 1701 { 1702 return 0; 1703 } 1704 1705 static inline int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk) 1706 { 1707 return 0; 1708 } 1709 #endif /* CONFIG_SECURITY_NETWORK */ 1710 1711 #ifdef CONFIG_SECURITY_INFINIBAND 1712 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1713 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1714 int security_ib_alloc_security(void **sec); 1715 void security_ib_free_security(void *sec); 1716 #else /* CONFIG_SECURITY_INFINIBAND */ 1717 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1718 { 1719 return 0; 1720 } 1721 1722 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1723 { 1724 return 0; 1725 } 1726 1727 static inline int security_ib_alloc_security(void **sec) 1728 { 1729 return 0; 1730 } 1731 1732 static inline void security_ib_free_security(void *sec) 1733 { 1734 } 1735 #endif /* CONFIG_SECURITY_INFINIBAND */ 1736 1737 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1738 1739 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1740 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1741 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1742 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1743 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1744 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1745 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1746 struct xfrm_sec_ctx *polsec, u32 secid); 1747 int security_xfrm_state_delete(struct xfrm_state *x); 1748 void security_xfrm_state_free(struct xfrm_state *x); 1749 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); 1750 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1751 struct xfrm_policy *xp, 1752 const struct flowi_common *flic); 1753 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1754 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1755 1756 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1757 1758 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1759 struct xfrm_user_sec_ctx *sec_ctx, 1760 gfp_t gfp) 1761 { 1762 return 0; 1763 } 1764 1765 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1766 { 1767 return 0; 1768 } 1769 1770 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1771 { 1772 } 1773 1774 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1775 { 1776 return 0; 1777 } 1778 1779 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1780 struct xfrm_user_sec_ctx *sec_ctx) 1781 { 1782 return 0; 1783 } 1784 1785 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1786 struct xfrm_sec_ctx *polsec, u32 secid) 1787 { 1788 return 0; 1789 } 1790 1791 static inline void security_xfrm_state_free(struct xfrm_state *x) 1792 { 1793 } 1794 1795 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1796 { 1797 return 0; 1798 } 1799 1800 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) 1801 { 1802 return 0; 1803 } 1804 1805 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1806 struct xfrm_policy *xp, 1807 const struct flowi_common *flic) 1808 { 1809 return 1; 1810 } 1811 1812 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1813 { 1814 return 0; 1815 } 1816 1817 static inline void security_skb_classify_flow(struct sk_buff *skb, 1818 struct flowi_common *flic) 1819 { 1820 } 1821 1822 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1823 1824 #ifdef CONFIG_SECURITY_PATH 1825 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1826 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1827 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1828 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1829 unsigned int dev); 1830 int security_path_truncate(const struct path *path); 1831 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1832 const char *old_name); 1833 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1834 struct dentry *new_dentry); 1835 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1836 const struct path *new_dir, struct dentry *new_dentry, 1837 unsigned int flags); 1838 int security_path_chmod(const struct path *path, umode_t mode); 1839 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1840 int security_path_chroot(const struct path *path); 1841 #else /* CONFIG_SECURITY_PATH */ 1842 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1843 { 1844 return 0; 1845 } 1846 1847 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1848 umode_t mode) 1849 { 1850 return 0; 1851 } 1852 1853 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1854 { 1855 return 0; 1856 } 1857 1858 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1859 umode_t mode, unsigned int dev) 1860 { 1861 return 0; 1862 } 1863 1864 static inline int security_path_truncate(const struct path *path) 1865 { 1866 return 0; 1867 } 1868 1869 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1870 const char *old_name) 1871 { 1872 return 0; 1873 } 1874 1875 static inline int security_path_link(struct dentry *old_dentry, 1876 const struct path *new_dir, 1877 struct dentry *new_dentry) 1878 { 1879 return 0; 1880 } 1881 1882 static inline int security_path_rename(const struct path *old_dir, 1883 struct dentry *old_dentry, 1884 const struct path *new_dir, 1885 struct dentry *new_dentry, 1886 unsigned int flags) 1887 { 1888 return 0; 1889 } 1890 1891 static inline int security_path_chmod(const struct path *path, umode_t mode) 1892 { 1893 return 0; 1894 } 1895 1896 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1897 { 1898 return 0; 1899 } 1900 1901 static inline int security_path_chroot(const struct path *path) 1902 { 1903 return 0; 1904 } 1905 #endif /* CONFIG_SECURITY_PATH */ 1906 1907 #ifdef CONFIG_KEYS 1908 #ifdef CONFIG_SECURITY 1909 1910 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1911 void security_key_free(struct key *key); 1912 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1913 enum key_need_perm need_perm); 1914 int security_key_getsecurity(struct key *key, char **_buffer); 1915 1916 #else 1917 1918 static inline int security_key_alloc(struct key *key, 1919 const struct cred *cred, 1920 unsigned long flags) 1921 { 1922 return 0; 1923 } 1924 1925 static inline void security_key_free(struct key *key) 1926 { 1927 } 1928 1929 static inline int security_key_permission(key_ref_t key_ref, 1930 const struct cred *cred, 1931 enum key_need_perm need_perm) 1932 { 1933 return 0; 1934 } 1935 1936 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1937 { 1938 *_buffer = NULL; 1939 return 0; 1940 } 1941 1942 #endif 1943 #endif /* CONFIG_KEYS */ 1944 1945 #ifdef CONFIG_AUDIT 1946 #ifdef CONFIG_SECURITY 1947 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1948 int security_audit_rule_known(struct audit_krule *krule); 1949 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1950 void security_audit_rule_free(void *lsmrule); 1951 1952 #else 1953 1954 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1955 void **lsmrule) 1956 { 1957 return 0; 1958 } 1959 1960 static inline int security_audit_rule_known(struct audit_krule *krule) 1961 { 1962 return 0; 1963 } 1964 1965 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1966 void *lsmrule) 1967 { 1968 return 0; 1969 } 1970 1971 static inline void security_audit_rule_free(void *lsmrule) 1972 { } 1973 1974 #endif /* CONFIG_SECURITY */ 1975 #endif /* CONFIG_AUDIT */ 1976 1977 #ifdef CONFIG_SECURITYFS 1978 1979 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1980 struct dentry *parent, void *data, 1981 const struct file_operations *fops); 1982 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1983 struct dentry *securityfs_create_symlink(const char *name, 1984 struct dentry *parent, 1985 const char *target, 1986 const struct inode_operations *iops); 1987 extern void securityfs_remove(struct dentry *dentry); 1988 1989 #else /* CONFIG_SECURITYFS */ 1990 1991 static inline struct dentry *securityfs_create_dir(const char *name, 1992 struct dentry *parent) 1993 { 1994 return ERR_PTR(-ENODEV); 1995 } 1996 1997 static inline struct dentry *securityfs_create_file(const char *name, 1998 umode_t mode, 1999 struct dentry *parent, 2000 void *data, 2001 const struct file_operations *fops) 2002 { 2003 return ERR_PTR(-ENODEV); 2004 } 2005 2006 static inline struct dentry *securityfs_create_symlink(const char *name, 2007 struct dentry *parent, 2008 const char *target, 2009 const struct inode_operations *iops) 2010 { 2011 return ERR_PTR(-ENODEV); 2012 } 2013 2014 static inline void securityfs_remove(struct dentry *dentry) 2015 {} 2016 2017 #endif 2018 2019 #ifdef CONFIG_BPF_SYSCALL 2020 union bpf_attr; 2021 struct bpf_map; 2022 struct bpf_prog; 2023 struct bpf_prog_aux; 2024 #ifdef CONFIG_SECURITY 2025 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 2026 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 2027 extern int security_bpf_prog(struct bpf_prog *prog); 2028 extern int security_bpf_map_alloc(struct bpf_map *map); 2029 extern void security_bpf_map_free(struct bpf_map *map); 2030 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 2031 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 2032 #else 2033 static inline int security_bpf(int cmd, union bpf_attr *attr, 2034 unsigned int size) 2035 { 2036 return 0; 2037 } 2038 2039 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 2040 { 2041 return 0; 2042 } 2043 2044 static inline int security_bpf_prog(struct bpf_prog *prog) 2045 { 2046 return 0; 2047 } 2048 2049 static inline int security_bpf_map_alloc(struct bpf_map *map) 2050 { 2051 return 0; 2052 } 2053 2054 static inline void security_bpf_map_free(struct bpf_map *map) 2055 { } 2056 2057 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 2058 { 2059 return 0; 2060 } 2061 2062 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 2063 { } 2064 #endif /* CONFIG_SECURITY */ 2065 #endif /* CONFIG_BPF_SYSCALL */ 2066 2067 #ifdef CONFIG_PERF_EVENTS 2068 struct perf_event_attr; 2069 struct perf_event; 2070 2071 #ifdef CONFIG_SECURITY 2072 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 2073 extern int security_perf_event_alloc(struct perf_event *event); 2074 extern void security_perf_event_free(struct perf_event *event); 2075 extern int security_perf_event_read(struct perf_event *event); 2076 extern int security_perf_event_write(struct perf_event *event); 2077 #else 2078 static inline int security_perf_event_open(struct perf_event_attr *attr, 2079 int type) 2080 { 2081 return 0; 2082 } 2083 2084 static inline int security_perf_event_alloc(struct perf_event *event) 2085 { 2086 return 0; 2087 } 2088 2089 static inline void security_perf_event_free(struct perf_event *event) 2090 { 2091 } 2092 2093 static inline int security_perf_event_read(struct perf_event *event) 2094 { 2095 return 0; 2096 } 2097 2098 static inline int security_perf_event_write(struct perf_event *event) 2099 { 2100 return 0; 2101 } 2102 #endif /* CONFIG_SECURITY */ 2103 #endif /* CONFIG_PERF_EVENTS */ 2104 2105 #ifdef CONFIG_IO_URING 2106 #ifdef CONFIG_SECURITY 2107 extern int security_uring_override_creds(const struct cred *new); 2108 extern int security_uring_sqpoll(void); 2109 extern int security_uring_cmd(struct io_uring_cmd *ioucmd); 2110 #else 2111 static inline int security_uring_override_creds(const struct cred *new) 2112 { 2113 return 0; 2114 } 2115 static inline int security_uring_sqpoll(void) 2116 { 2117 return 0; 2118 } 2119 static inline int security_uring_cmd(struct io_uring_cmd *ioucmd) 2120 { 2121 return 0; 2122 } 2123 #endif /* CONFIG_SECURITY */ 2124 #endif /* CONFIG_IO_URING */ 2125 2126 #endif /* ! __LINUX_SECURITY_H */ 2127