1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/kernel_read_file.h> 27 #include <linux/key.h> 28 #include <linux/capability.h> 29 #include <linux/fs.h> 30 #include <linux/slab.h> 31 #include <linux/err.h> 32 #include <linux/string.h> 33 #include <linux/mm.h> 34 35 struct linux_binprm; 36 struct cred; 37 struct rlimit; 38 struct kernel_siginfo; 39 struct sembuf; 40 struct kern_ipc_perm; 41 struct audit_context; 42 struct super_block; 43 struct inode; 44 struct dentry; 45 struct file; 46 struct vfsmount; 47 struct path; 48 struct qstr; 49 struct iattr; 50 struct fown_struct; 51 struct file_operations; 52 struct msg_msg; 53 struct xattr; 54 struct kernfs_node; 55 struct xfrm_sec_ctx; 56 struct mm_struct; 57 struct fs_context; 58 struct fs_parameter; 59 enum fs_value_type; 60 struct watch; 61 struct watch_notification; 62 63 /* Default (no) options for the capable function */ 64 #define CAP_OPT_NONE 0x0 65 /* If capable should audit the security request */ 66 #define CAP_OPT_NOAUDIT BIT(1) 67 /* If capable is being called by a setid function */ 68 #define CAP_OPT_INSETID BIT(2) 69 70 /* LSM Agnostic defines for fs_context::lsm_flags */ 71 #define SECURITY_LSM_NATIVE_LABELS 1 72 73 struct ctl_table; 74 struct audit_krule; 75 struct user_namespace; 76 struct timezone; 77 78 enum lsm_event { 79 LSM_POLICY_CHANGE, 80 }; 81 82 /* 83 * These are reasons that can be passed to the security_locked_down() 84 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 85 * ability for userland to modify kernel code) are placed before 86 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 87 * confidentiality (ie, the ability for userland to extract 88 * information from the running kernel that would otherwise be 89 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 90 * 91 * LSM authors should note that the semantics of any given lockdown 92 * reason are not guaranteed to be stable - the same reason may block 93 * one set of features in one kernel release, and a slightly different 94 * set of features in a later kernel release. LSMs that seek to expose 95 * lockdown policy at any level of granularity other than "none", 96 * "integrity" or "confidentiality" are responsible for either 97 * ensuring that they expose a consistent level of functionality to 98 * userland, or ensuring that userland is aware that this is 99 * potentially a moving target. It is easy to misuse this information 100 * in a way that could break userspace. Please be careful not to do 101 * so. 102 * 103 * If you add to this, remember to extend lockdown_reasons in 104 * security/lockdown/lockdown.c. 105 */ 106 enum lockdown_reason { 107 LOCKDOWN_NONE, 108 LOCKDOWN_MODULE_SIGNATURE, 109 LOCKDOWN_DEV_MEM, 110 LOCKDOWN_EFI_TEST, 111 LOCKDOWN_KEXEC, 112 LOCKDOWN_HIBERNATION, 113 LOCKDOWN_PCI_ACCESS, 114 LOCKDOWN_IOPORT, 115 LOCKDOWN_MSR, 116 LOCKDOWN_ACPI_TABLES, 117 LOCKDOWN_PCMCIA_CIS, 118 LOCKDOWN_TIOCSSERIAL, 119 LOCKDOWN_MODULE_PARAMETERS, 120 LOCKDOWN_MMIOTRACE, 121 LOCKDOWN_DEBUGFS, 122 LOCKDOWN_XMON_WR, 123 LOCKDOWN_BPF_WRITE_USER, 124 LOCKDOWN_INTEGRITY_MAX, 125 LOCKDOWN_KCORE, 126 LOCKDOWN_KPROBES, 127 LOCKDOWN_BPF_READ_KERNEL, 128 LOCKDOWN_PERF, 129 LOCKDOWN_TRACEFS, 130 LOCKDOWN_XMON_RW, 131 LOCKDOWN_XFRM_SECRET, 132 LOCKDOWN_CONFIDENTIALITY_MAX, 133 }; 134 135 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 136 137 /* These functions are in security/commoncap.c */ 138 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 139 int cap, unsigned int opts); 140 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 141 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 142 extern int cap_ptrace_traceme(struct task_struct *parent); 143 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 144 extern int cap_capset(struct cred *new, const struct cred *old, 145 const kernel_cap_t *effective, 146 const kernel_cap_t *inheritable, 147 const kernel_cap_t *permitted); 148 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 149 int cap_inode_setxattr(struct dentry *dentry, const char *name, 150 const void *value, size_t size, int flags); 151 int cap_inode_removexattr(struct user_namespace *mnt_userns, 152 struct dentry *dentry, const char *name); 153 int cap_inode_need_killpriv(struct dentry *dentry); 154 int cap_inode_killpriv(struct user_namespace *mnt_userns, 155 struct dentry *dentry); 156 int cap_inode_getsecurity(struct user_namespace *mnt_userns, 157 struct inode *inode, const char *name, void **buffer, 158 bool alloc); 159 extern int cap_mmap_addr(unsigned long addr); 160 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 161 unsigned long prot, unsigned long flags); 162 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 163 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 164 unsigned long arg4, unsigned long arg5); 165 extern int cap_task_setscheduler(struct task_struct *p); 166 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 167 extern int cap_task_setnice(struct task_struct *p, int nice); 168 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 169 170 struct msghdr; 171 struct sk_buff; 172 struct sock; 173 struct sockaddr; 174 struct socket; 175 struct flowi_common; 176 struct dst_entry; 177 struct xfrm_selector; 178 struct xfrm_policy; 179 struct xfrm_state; 180 struct xfrm_user_sec_ctx; 181 struct seq_file; 182 struct sctp_association; 183 184 #ifdef CONFIG_MMU 185 extern unsigned long mmap_min_addr; 186 extern unsigned long dac_mmap_min_addr; 187 #else 188 #define mmap_min_addr 0UL 189 #define dac_mmap_min_addr 0UL 190 #endif 191 192 /* 193 * Values used in the task_security_ops calls 194 */ 195 /* setuid or setgid, id0 == uid or gid */ 196 #define LSM_SETID_ID 1 197 198 /* setreuid or setregid, id0 == real, id1 == eff */ 199 #define LSM_SETID_RE 2 200 201 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 202 #define LSM_SETID_RES 4 203 204 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 205 #define LSM_SETID_FS 8 206 207 /* Flags for security_task_prlimit(). */ 208 #define LSM_PRLIMIT_READ 1 209 #define LSM_PRLIMIT_WRITE 2 210 211 /* forward declares to avoid warnings */ 212 struct sched_param; 213 struct request_sock; 214 215 /* bprm->unsafe reasons */ 216 #define LSM_UNSAFE_SHARE 1 217 #define LSM_UNSAFE_PTRACE 2 218 #define LSM_UNSAFE_NO_NEW_PRIVS 4 219 220 #ifdef CONFIG_MMU 221 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 222 void *buffer, size_t *lenp, loff_t *ppos); 223 #endif 224 225 /* security_inode_init_security callback function to write xattrs */ 226 typedef int (*initxattrs) (struct inode *inode, 227 const struct xattr *xattr_array, void *fs_data); 228 229 230 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 231 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 232 #define __data_id_stringify(dummy, str) #str, 233 234 enum kernel_load_data_id { 235 __kernel_read_file_id(__data_id_enumify) 236 }; 237 238 static const char * const kernel_load_data_str[] = { 239 __kernel_read_file_id(__data_id_stringify) 240 }; 241 242 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 243 { 244 if ((unsigned)id >= LOADING_MAX_ID) 245 return kernel_load_data_str[LOADING_UNKNOWN]; 246 247 return kernel_load_data_str[id]; 248 } 249 250 #ifdef CONFIG_SECURITY 251 252 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 253 int register_blocking_lsm_notifier(struct notifier_block *nb); 254 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 255 256 /* prototypes */ 257 extern int security_init(void); 258 extern int early_security_init(void); 259 260 /* Security operations */ 261 int security_binder_set_context_mgr(const struct cred *mgr); 262 int security_binder_transaction(const struct cred *from, 263 const struct cred *to); 264 int security_binder_transfer_binder(const struct cred *from, 265 const struct cred *to); 266 int security_binder_transfer_file(const struct cred *from, 267 const struct cred *to, struct file *file); 268 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 269 int security_ptrace_traceme(struct task_struct *parent); 270 int security_capget(struct task_struct *target, 271 kernel_cap_t *effective, 272 kernel_cap_t *inheritable, 273 kernel_cap_t *permitted); 274 int security_capset(struct cred *new, const struct cred *old, 275 const kernel_cap_t *effective, 276 const kernel_cap_t *inheritable, 277 const kernel_cap_t *permitted); 278 int security_capable(const struct cred *cred, 279 struct user_namespace *ns, 280 int cap, 281 unsigned int opts); 282 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 283 int security_quota_on(struct dentry *dentry); 284 int security_syslog(int type); 285 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 286 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 287 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 288 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 289 int security_bprm_check(struct linux_binprm *bprm); 290 void security_bprm_committing_creds(struct linux_binprm *bprm); 291 void security_bprm_committed_creds(struct linux_binprm *bprm); 292 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 293 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 294 int security_sb_alloc(struct super_block *sb); 295 void security_sb_delete(struct super_block *sb); 296 void security_sb_free(struct super_block *sb); 297 void security_free_mnt_opts(void **mnt_opts); 298 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 299 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); 300 int security_sb_remount(struct super_block *sb, void *mnt_opts); 301 int security_sb_kern_mount(struct super_block *sb); 302 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 303 int security_sb_statfs(struct dentry *dentry); 304 int security_sb_mount(const char *dev_name, const struct path *path, 305 const char *type, unsigned long flags, void *data); 306 int security_sb_umount(struct vfsmount *mnt, int flags); 307 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 308 int security_sb_set_mnt_opts(struct super_block *sb, 309 void *mnt_opts, 310 unsigned long kern_flags, 311 unsigned long *set_kern_flags); 312 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 313 struct super_block *newsb, 314 unsigned long kern_flags, 315 unsigned long *set_kern_flags); 316 int security_move_mount(const struct path *from_path, const struct path *to_path); 317 int security_dentry_init_security(struct dentry *dentry, int mode, 318 const struct qstr *name, 319 const char **xattr_name, void **ctx, 320 u32 *ctxlen); 321 int security_dentry_create_files_as(struct dentry *dentry, int mode, 322 struct qstr *name, 323 const struct cred *old, 324 struct cred *new); 325 int security_path_notify(const struct path *path, u64 mask, 326 unsigned int obj_type); 327 int security_inode_alloc(struct inode *inode); 328 void security_inode_free(struct inode *inode); 329 int security_inode_init_security(struct inode *inode, struct inode *dir, 330 const struct qstr *qstr, 331 initxattrs initxattrs, void *fs_data); 332 int security_inode_init_security_anon(struct inode *inode, 333 const struct qstr *name, 334 const struct inode *context_inode); 335 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 336 const struct qstr *qstr, const char **name, 337 void **value, size_t *len); 338 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 339 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 340 struct dentry *new_dentry); 341 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 342 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 343 const char *old_name); 344 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 345 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 346 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 347 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 348 struct inode *new_dir, struct dentry *new_dentry, 349 unsigned int flags); 350 int security_inode_readlink(struct dentry *dentry); 351 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 352 bool rcu); 353 int security_inode_permission(struct inode *inode, int mask); 354 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 355 int security_inode_getattr(const struct path *path); 356 int security_inode_setxattr(struct user_namespace *mnt_userns, 357 struct dentry *dentry, const char *name, 358 const void *value, size_t size, int flags); 359 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 360 const void *value, size_t size, int flags); 361 int security_inode_getxattr(struct dentry *dentry, const char *name); 362 int security_inode_listxattr(struct dentry *dentry); 363 int security_inode_removexattr(struct user_namespace *mnt_userns, 364 struct dentry *dentry, const char *name); 365 int security_inode_need_killpriv(struct dentry *dentry); 366 int security_inode_killpriv(struct user_namespace *mnt_userns, 367 struct dentry *dentry); 368 int security_inode_getsecurity(struct user_namespace *mnt_userns, 369 struct inode *inode, const char *name, 370 void **buffer, bool alloc); 371 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 372 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 373 void security_inode_getsecid(struct inode *inode, u32 *secid); 374 int security_inode_copy_up(struct dentry *src, struct cred **new); 375 int security_inode_copy_up_xattr(const char *name); 376 int security_kernfs_init_security(struct kernfs_node *kn_dir, 377 struct kernfs_node *kn); 378 int security_file_permission(struct file *file, int mask); 379 int security_file_alloc(struct file *file); 380 void security_file_free(struct file *file); 381 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 382 int security_mmap_file(struct file *file, unsigned long prot, 383 unsigned long flags); 384 int security_mmap_addr(unsigned long addr); 385 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 386 unsigned long prot); 387 int security_file_lock(struct file *file, unsigned int cmd); 388 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 389 void security_file_set_fowner(struct file *file); 390 int security_file_send_sigiotask(struct task_struct *tsk, 391 struct fown_struct *fown, int sig); 392 int security_file_receive(struct file *file); 393 int security_file_open(struct file *file); 394 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 395 void security_task_free(struct task_struct *task); 396 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 397 void security_cred_free(struct cred *cred); 398 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 399 void security_transfer_creds(struct cred *new, const struct cred *old); 400 void security_cred_getsecid(const struct cred *c, u32 *secid); 401 int security_kernel_act_as(struct cred *new, u32 secid); 402 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 403 int security_kernel_module_request(char *kmod_name); 404 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 405 int security_kernel_post_load_data(char *buf, loff_t size, 406 enum kernel_load_data_id id, 407 char *description); 408 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 409 bool contents); 410 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 411 enum kernel_read_file_id id); 412 int security_task_fix_setuid(struct cred *new, const struct cred *old, 413 int flags); 414 int security_task_fix_setgid(struct cred *new, const struct cred *old, 415 int flags); 416 int security_task_setpgid(struct task_struct *p, pid_t pgid); 417 int security_task_getpgid(struct task_struct *p); 418 int security_task_getsid(struct task_struct *p); 419 void security_current_getsecid_subj(u32 *secid); 420 void security_task_getsecid_obj(struct task_struct *p, u32 *secid); 421 int security_task_setnice(struct task_struct *p, int nice); 422 int security_task_setioprio(struct task_struct *p, int ioprio); 423 int security_task_getioprio(struct task_struct *p); 424 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 425 unsigned int flags); 426 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 427 struct rlimit *new_rlim); 428 int security_task_setscheduler(struct task_struct *p); 429 int security_task_getscheduler(struct task_struct *p); 430 int security_task_movememory(struct task_struct *p); 431 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 432 int sig, const struct cred *cred); 433 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 434 unsigned long arg4, unsigned long arg5); 435 void security_task_to_inode(struct task_struct *p, struct inode *inode); 436 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 437 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 438 int security_msg_msg_alloc(struct msg_msg *msg); 439 void security_msg_msg_free(struct msg_msg *msg); 440 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 441 void security_msg_queue_free(struct kern_ipc_perm *msq); 442 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 443 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 444 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 445 struct msg_msg *msg, int msqflg); 446 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 447 struct task_struct *target, long type, int mode); 448 int security_shm_alloc(struct kern_ipc_perm *shp); 449 void security_shm_free(struct kern_ipc_perm *shp); 450 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 451 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 452 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 453 int security_sem_alloc(struct kern_ipc_perm *sma); 454 void security_sem_free(struct kern_ipc_perm *sma); 455 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 456 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 457 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 458 unsigned nsops, int alter); 459 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 460 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 461 char **value); 462 int security_setprocattr(const char *lsm, const char *name, void *value, 463 size_t size); 464 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 465 int security_ismaclabel(const char *name); 466 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 467 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 468 void security_release_secctx(char *secdata, u32 seclen); 469 void security_inode_invalidate_secctx(struct inode *inode); 470 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 471 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 472 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 473 int security_locked_down(enum lockdown_reason what); 474 #else /* CONFIG_SECURITY */ 475 476 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 477 { 478 return 0; 479 } 480 481 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 482 { 483 return 0; 484 } 485 486 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 487 { 488 return 0; 489 } 490 491 static inline void security_free_mnt_opts(void **mnt_opts) 492 { 493 } 494 495 /* 496 * This is the default capabilities functionality. Most of these functions 497 * are just stubbed out, but a few must call the proper capable code. 498 */ 499 500 static inline int security_init(void) 501 { 502 return 0; 503 } 504 505 static inline int early_security_init(void) 506 { 507 return 0; 508 } 509 510 static inline int security_binder_set_context_mgr(const struct cred *mgr) 511 { 512 return 0; 513 } 514 515 static inline int security_binder_transaction(const struct cred *from, 516 const struct cred *to) 517 { 518 return 0; 519 } 520 521 static inline int security_binder_transfer_binder(const struct cred *from, 522 const struct cred *to) 523 { 524 return 0; 525 } 526 527 static inline int security_binder_transfer_file(const struct cred *from, 528 const struct cred *to, 529 struct file *file) 530 { 531 return 0; 532 } 533 534 static inline int security_ptrace_access_check(struct task_struct *child, 535 unsigned int mode) 536 { 537 return cap_ptrace_access_check(child, mode); 538 } 539 540 static inline int security_ptrace_traceme(struct task_struct *parent) 541 { 542 return cap_ptrace_traceme(parent); 543 } 544 545 static inline int security_capget(struct task_struct *target, 546 kernel_cap_t *effective, 547 kernel_cap_t *inheritable, 548 kernel_cap_t *permitted) 549 { 550 return cap_capget(target, effective, inheritable, permitted); 551 } 552 553 static inline int security_capset(struct cred *new, 554 const struct cred *old, 555 const kernel_cap_t *effective, 556 const kernel_cap_t *inheritable, 557 const kernel_cap_t *permitted) 558 { 559 return cap_capset(new, old, effective, inheritable, permitted); 560 } 561 562 static inline int security_capable(const struct cred *cred, 563 struct user_namespace *ns, 564 int cap, 565 unsigned int opts) 566 { 567 return cap_capable(cred, ns, cap, opts); 568 } 569 570 static inline int security_quotactl(int cmds, int type, int id, 571 struct super_block *sb) 572 { 573 return 0; 574 } 575 576 static inline int security_quota_on(struct dentry *dentry) 577 { 578 return 0; 579 } 580 581 static inline int security_syslog(int type) 582 { 583 return 0; 584 } 585 586 static inline int security_settime64(const struct timespec64 *ts, 587 const struct timezone *tz) 588 { 589 return cap_settime(ts, tz); 590 } 591 592 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 593 { 594 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 595 } 596 597 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 598 { 599 return 0; 600 } 601 602 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 603 struct file *file) 604 { 605 return cap_bprm_creds_from_file(bprm, file); 606 } 607 608 static inline int security_bprm_check(struct linux_binprm *bprm) 609 { 610 return 0; 611 } 612 613 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 614 { 615 } 616 617 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 618 { 619 } 620 621 static inline int security_fs_context_dup(struct fs_context *fc, 622 struct fs_context *src_fc) 623 { 624 return 0; 625 } 626 static inline int security_fs_context_parse_param(struct fs_context *fc, 627 struct fs_parameter *param) 628 { 629 return -ENOPARAM; 630 } 631 632 static inline int security_sb_alloc(struct super_block *sb) 633 { 634 return 0; 635 } 636 637 static inline void security_sb_delete(struct super_block *sb) 638 { } 639 640 static inline void security_sb_free(struct super_block *sb) 641 { } 642 643 static inline int security_sb_eat_lsm_opts(char *options, 644 void **mnt_opts) 645 { 646 return 0; 647 } 648 649 static inline int security_sb_remount(struct super_block *sb, 650 void *mnt_opts) 651 { 652 return 0; 653 } 654 655 static inline int security_sb_mnt_opts_compat(struct super_block *sb, 656 void *mnt_opts) 657 { 658 return 0; 659 } 660 661 662 static inline int security_sb_kern_mount(struct super_block *sb) 663 { 664 return 0; 665 } 666 667 static inline int security_sb_show_options(struct seq_file *m, 668 struct super_block *sb) 669 { 670 return 0; 671 } 672 673 static inline int security_sb_statfs(struct dentry *dentry) 674 { 675 return 0; 676 } 677 678 static inline int security_sb_mount(const char *dev_name, const struct path *path, 679 const char *type, unsigned long flags, 680 void *data) 681 { 682 return 0; 683 } 684 685 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 686 { 687 return 0; 688 } 689 690 static inline int security_sb_pivotroot(const struct path *old_path, 691 const struct path *new_path) 692 { 693 return 0; 694 } 695 696 static inline int security_sb_set_mnt_opts(struct super_block *sb, 697 void *mnt_opts, 698 unsigned long kern_flags, 699 unsigned long *set_kern_flags) 700 { 701 return 0; 702 } 703 704 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 705 struct super_block *newsb, 706 unsigned long kern_flags, 707 unsigned long *set_kern_flags) 708 { 709 return 0; 710 } 711 712 static inline int security_move_mount(const struct path *from_path, 713 const struct path *to_path) 714 { 715 return 0; 716 } 717 718 static inline int security_path_notify(const struct path *path, u64 mask, 719 unsigned int obj_type) 720 { 721 return 0; 722 } 723 724 static inline int security_inode_alloc(struct inode *inode) 725 { 726 return 0; 727 } 728 729 static inline void security_inode_free(struct inode *inode) 730 { } 731 732 static inline int security_dentry_init_security(struct dentry *dentry, 733 int mode, 734 const struct qstr *name, 735 const char **xattr_name, 736 void **ctx, 737 u32 *ctxlen) 738 { 739 return -EOPNOTSUPP; 740 } 741 742 static inline int security_dentry_create_files_as(struct dentry *dentry, 743 int mode, struct qstr *name, 744 const struct cred *old, 745 struct cred *new) 746 { 747 return 0; 748 } 749 750 751 static inline int security_inode_init_security(struct inode *inode, 752 struct inode *dir, 753 const struct qstr *qstr, 754 const initxattrs xattrs, 755 void *fs_data) 756 { 757 return 0; 758 } 759 760 static inline int security_inode_init_security_anon(struct inode *inode, 761 const struct qstr *name, 762 const struct inode *context_inode) 763 { 764 return 0; 765 } 766 767 static inline int security_old_inode_init_security(struct inode *inode, 768 struct inode *dir, 769 const struct qstr *qstr, 770 const char **name, 771 void **value, size_t *len) 772 { 773 return -EOPNOTSUPP; 774 } 775 776 static inline int security_inode_create(struct inode *dir, 777 struct dentry *dentry, 778 umode_t mode) 779 { 780 return 0; 781 } 782 783 static inline int security_inode_link(struct dentry *old_dentry, 784 struct inode *dir, 785 struct dentry *new_dentry) 786 { 787 return 0; 788 } 789 790 static inline int security_inode_unlink(struct inode *dir, 791 struct dentry *dentry) 792 { 793 return 0; 794 } 795 796 static inline int security_inode_symlink(struct inode *dir, 797 struct dentry *dentry, 798 const char *old_name) 799 { 800 return 0; 801 } 802 803 static inline int security_inode_mkdir(struct inode *dir, 804 struct dentry *dentry, 805 int mode) 806 { 807 return 0; 808 } 809 810 static inline int security_inode_rmdir(struct inode *dir, 811 struct dentry *dentry) 812 { 813 return 0; 814 } 815 816 static inline int security_inode_mknod(struct inode *dir, 817 struct dentry *dentry, 818 int mode, dev_t dev) 819 { 820 return 0; 821 } 822 823 static inline int security_inode_rename(struct inode *old_dir, 824 struct dentry *old_dentry, 825 struct inode *new_dir, 826 struct dentry *new_dentry, 827 unsigned int flags) 828 { 829 return 0; 830 } 831 832 static inline int security_inode_readlink(struct dentry *dentry) 833 { 834 return 0; 835 } 836 837 static inline int security_inode_follow_link(struct dentry *dentry, 838 struct inode *inode, 839 bool rcu) 840 { 841 return 0; 842 } 843 844 static inline int security_inode_permission(struct inode *inode, int mask) 845 { 846 return 0; 847 } 848 849 static inline int security_inode_setattr(struct dentry *dentry, 850 struct iattr *attr) 851 { 852 return 0; 853 } 854 855 static inline int security_inode_getattr(const struct path *path) 856 { 857 return 0; 858 } 859 860 static inline int security_inode_setxattr(struct user_namespace *mnt_userns, 861 struct dentry *dentry, const char *name, const void *value, 862 size_t size, int flags) 863 { 864 return cap_inode_setxattr(dentry, name, value, size, flags); 865 } 866 867 static inline void security_inode_post_setxattr(struct dentry *dentry, 868 const char *name, const void *value, size_t size, int flags) 869 { } 870 871 static inline int security_inode_getxattr(struct dentry *dentry, 872 const char *name) 873 { 874 return 0; 875 } 876 877 static inline int security_inode_listxattr(struct dentry *dentry) 878 { 879 return 0; 880 } 881 882 static inline int security_inode_removexattr(struct user_namespace *mnt_userns, 883 struct dentry *dentry, 884 const char *name) 885 { 886 return cap_inode_removexattr(mnt_userns, dentry, name); 887 } 888 889 static inline int security_inode_need_killpriv(struct dentry *dentry) 890 { 891 return cap_inode_need_killpriv(dentry); 892 } 893 894 static inline int security_inode_killpriv(struct user_namespace *mnt_userns, 895 struct dentry *dentry) 896 { 897 return cap_inode_killpriv(mnt_userns, dentry); 898 } 899 900 static inline int security_inode_getsecurity(struct user_namespace *mnt_userns, 901 struct inode *inode, 902 const char *name, void **buffer, 903 bool alloc) 904 { 905 return cap_inode_getsecurity(mnt_userns, inode, name, buffer, alloc); 906 } 907 908 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 909 { 910 return -EOPNOTSUPP; 911 } 912 913 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 914 { 915 return 0; 916 } 917 918 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 919 { 920 *secid = 0; 921 } 922 923 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 924 { 925 return 0; 926 } 927 928 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 929 struct kernfs_node *kn) 930 { 931 return 0; 932 } 933 934 static inline int security_inode_copy_up_xattr(const char *name) 935 { 936 return -EOPNOTSUPP; 937 } 938 939 static inline int security_file_permission(struct file *file, int mask) 940 { 941 return 0; 942 } 943 944 static inline int security_file_alloc(struct file *file) 945 { 946 return 0; 947 } 948 949 static inline void security_file_free(struct file *file) 950 { } 951 952 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 953 unsigned long arg) 954 { 955 return 0; 956 } 957 958 static inline int security_mmap_file(struct file *file, unsigned long prot, 959 unsigned long flags) 960 { 961 return 0; 962 } 963 964 static inline int security_mmap_addr(unsigned long addr) 965 { 966 return cap_mmap_addr(addr); 967 } 968 969 static inline int security_file_mprotect(struct vm_area_struct *vma, 970 unsigned long reqprot, 971 unsigned long prot) 972 { 973 return 0; 974 } 975 976 static inline int security_file_lock(struct file *file, unsigned int cmd) 977 { 978 return 0; 979 } 980 981 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 982 unsigned long arg) 983 { 984 return 0; 985 } 986 987 static inline void security_file_set_fowner(struct file *file) 988 { 989 return; 990 } 991 992 static inline int security_file_send_sigiotask(struct task_struct *tsk, 993 struct fown_struct *fown, 994 int sig) 995 { 996 return 0; 997 } 998 999 static inline int security_file_receive(struct file *file) 1000 { 1001 return 0; 1002 } 1003 1004 static inline int security_file_open(struct file *file) 1005 { 1006 return 0; 1007 } 1008 1009 static inline int security_task_alloc(struct task_struct *task, 1010 unsigned long clone_flags) 1011 { 1012 return 0; 1013 } 1014 1015 static inline void security_task_free(struct task_struct *task) 1016 { } 1017 1018 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1019 { 1020 return 0; 1021 } 1022 1023 static inline void security_cred_free(struct cred *cred) 1024 { } 1025 1026 static inline int security_prepare_creds(struct cred *new, 1027 const struct cred *old, 1028 gfp_t gfp) 1029 { 1030 return 0; 1031 } 1032 1033 static inline void security_transfer_creds(struct cred *new, 1034 const struct cred *old) 1035 { 1036 } 1037 1038 static inline void security_cred_getsecid(const struct cred *c, u32 *secid) 1039 { 1040 *secid = 0; 1041 } 1042 1043 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1044 { 1045 return 0; 1046 } 1047 1048 static inline int security_kernel_create_files_as(struct cred *cred, 1049 struct inode *inode) 1050 { 1051 return 0; 1052 } 1053 1054 static inline int security_kernel_module_request(char *kmod_name) 1055 { 1056 return 0; 1057 } 1058 1059 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1060 { 1061 return 0; 1062 } 1063 1064 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1065 enum kernel_load_data_id id, 1066 char *description) 1067 { 1068 return 0; 1069 } 1070 1071 static inline int security_kernel_read_file(struct file *file, 1072 enum kernel_read_file_id id, 1073 bool contents) 1074 { 1075 return 0; 1076 } 1077 1078 static inline int security_kernel_post_read_file(struct file *file, 1079 char *buf, loff_t size, 1080 enum kernel_read_file_id id) 1081 { 1082 return 0; 1083 } 1084 1085 static inline int security_task_fix_setuid(struct cred *new, 1086 const struct cred *old, 1087 int flags) 1088 { 1089 return cap_task_fix_setuid(new, old, flags); 1090 } 1091 1092 static inline int security_task_fix_setgid(struct cred *new, 1093 const struct cred *old, 1094 int flags) 1095 { 1096 return 0; 1097 } 1098 1099 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1100 { 1101 return 0; 1102 } 1103 1104 static inline int security_task_getpgid(struct task_struct *p) 1105 { 1106 return 0; 1107 } 1108 1109 static inline int security_task_getsid(struct task_struct *p) 1110 { 1111 return 0; 1112 } 1113 1114 static inline void security_current_getsecid_subj(u32 *secid) 1115 { 1116 *secid = 0; 1117 } 1118 1119 static inline void security_task_getsecid_obj(struct task_struct *p, u32 *secid) 1120 { 1121 *secid = 0; 1122 } 1123 1124 static inline int security_task_setnice(struct task_struct *p, int nice) 1125 { 1126 return cap_task_setnice(p, nice); 1127 } 1128 1129 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1130 { 1131 return cap_task_setioprio(p, ioprio); 1132 } 1133 1134 static inline int security_task_getioprio(struct task_struct *p) 1135 { 1136 return 0; 1137 } 1138 1139 static inline int security_task_prlimit(const struct cred *cred, 1140 const struct cred *tcred, 1141 unsigned int flags) 1142 { 1143 return 0; 1144 } 1145 1146 static inline int security_task_setrlimit(struct task_struct *p, 1147 unsigned int resource, 1148 struct rlimit *new_rlim) 1149 { 1150 return 0; 1151 } 1152 1153 static inline int security_task_setscheduler(struct task_struct *p) 1154 { 1155 return cap_task_setscheduler(p); 1156 } 1157 1158 static inline int security_task_getscheduler(struct task_struct *p) 1159 { 1160 return 0; 1161 } 1162 1163 static inline int security_task_movememory(struct task_struct *p) 1164 { 1165 return 0; 1166 } 1167 1168 static inline int security_task_kill(struct task_struct *p, 1169 struct kernel_siginfo *info, int sig, 1170 const struct cred *cred) 1171 { 1172 return 0; 1173 } 1174 1175 static inline int security_task_prctl(int option, unsigned long arg2, 1176 unsigned long arg3, 1177 unsigned long arg4, 1178 unsigned long arg5) 1179 { 1180 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1181 } 1182 1183 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1184 { } 1185 1186 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1187 short flag) 1188 { 1189 return 0; 1190 } 1191 1192 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1193 { 1194 *secid = 0; 1195 } 1196 1197 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1198 { 1199 return 0; 1200 } 1201 1202 static inline void security_msg_msg_free(struct msg_msg *msg) 1203 { } 1204 1205 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1206 { 1207 return 0; 1208 } 1209 1210 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1211 { } 1212 1213 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1214 int msqflg) 1215 { 1216 return 0; 1217 } 1218 1219 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1220 { 1221 return 0; 1222 } 1223 1224 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1225 struct msg_msg *msg, int msqflg) 1226 { 1227 return 0; 1228 } 1229 1230 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1231 struct msg_msg *msg, 1232 struct task_struct *target, 1233 long type, int mode) 1234 { 1235 return 0; 1236 } 1237 1238 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1239 { 1240 return 0; 1241 } 1242 1243 static inline void security_shm_free(struct kern_ipc_perm *shp) 1244 { } 1245 1246 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1247 int shmflg) 1248 { 1249 return 0; 1250 } 1251 1252 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1253 { 1254 return 0; 1255 } 1256 1257 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1258 char __user *shmaddr, int shmflg) 1259 { 1260 return 0; 1261 } 1262 1263 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1264 { 1265 return 0; 1266 } 1267 1268 static inline void security_sem_free(struct kern_ipc_perm *sma) 1269 { } 1270 1271 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1272 { 1273 return 0; 1274 } 1275 1276 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1277 { 1278 return 0; 1279 } 1280 1281 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1282 struct sembuf *sops, unsigned nsops, 1283 int alter) 1284 { 1285 return 0; 1286 } 1287 1288 static inline void security_d_instantiate(struct dentry *dentry, 1289 struct inode *inode) 1290 { } 1291 1292 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1293 char *name, char **value) 1294 { 1295 return -EINVAL; 1296 } 1297 1298 static inline int security_setprocattr(const char *lsm, char *name, 1299 void *value, size_t size) 1300 { 1301 return -EINVAL; 1302 } 1303 1304 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1305 { 1306 return 0; 1307 } 1308 1309 static inline int security_ismaclabel(const char *name) 1310 { 1311 return 0; 1312 } 1313 1314 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1315 { 1316 return -EOPNOTSUPP; 1317 } 1318 1319 static inline int security_secctx_to_secid(const char *secdata, 1320 u32 seclen, 1321 u32 *secid) 1322 { 1323 return -EOPNOTSUPP; 1324 } 1325 1326 static inline void security_release_secctx(char *secdata, u32 seclen) 1327 { 1328 } 1329 1330 static inline void security_inode_invalidate_secctx(struct inode *inode) 1331 { 1332 } 1333 1334 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1335 { 1336 return -EOPNOTSUPP; 1337 } 1338 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1339 { 1340 return -EOPNOTSUPP; 1341 } 1342 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1343 { 1344 return -EOPNOTSUPP; 1345 } 1346 static inline int security_locked_down(enum lockdown_reason what) 1347 { 1348 return 0; 1349 } 1350 #endif /* CONFIG_SECURITY */ 1351 1352 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1353 int security_post_notification(const struct cred *w_cred, 1354 const struct cred *cred, 1355 struct watch_notification *n); 1356 #else 1357 static inline int security_post_notification(const struct cred *w_cred, 1358 const struct cred *cred, 1359 struct watch_notification *n) 1360 { 1361 return 0; 1362 } 1363 #endif 1364 1365 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1366 int security_watch_key(struct key *key); 1367 #else 1368 static inline int security_watch_key(struct key *key) 1369 { 1370 return 0; 1371 } 1372 #endif 1373 1374 #ifdef CONFIG_SECURITY_NETWORK 1375 1376 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1377 int security_unix_may_send(struct socket *sock, struct socket *other); 1378 int security_socket_create(int family, int type, int protocol, int kern); 1379 int security_socket_post_create(struct socket *sock, int family, 1380 int type, int protocol, int kern); 1381 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1382 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1383 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1384 int security_socket_listen(struct socket *sock, int backlog); 1385 int security_socket_accept(struct socket *sock, struct socket *newsock); 1386 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1387 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1388 int size, int flags); 1389 int security_socket_getsockname(struct socket *sock); 1390 int security_socket_getpeername(struct socket *sock); 1391 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1392 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1393 int security_socket_shutdown(struct socket *sock, int how); 1394 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1395 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1396 int __user *optlen, unsigned len); 1397 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1398 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1399 void security_sk_free(struct sock *sk); 1400 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1401 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic); 1402 void security_req_classify_flow(const struct request_sock *req, 1403 struct flowi_common *flic); 1404 void security_sock_graft(struct sock*sk, struct socket *parent); 1405 int security_inet_conn_request(const struct sock *sk, 1406 struct sk_buff *skb, struct request_sock *req); 1407 void security_inet_csk_clone(struct sock *newsk, 1408 const struct request_sock *req); 1409 void security_inet_conn_established(struct sock *sk, 1410 struct sk_buff *skb); 1411 int security_secmark_relabel_packet(u32 secid); 1412 void security_secmark_refcount_inc(void); 1413 void security_secmark_refcount_dec(void); 1414 int security_tun_dev_alloc_security(void **security); 1415 void security_tun_dev_free_security(void *security); 1416 int security_tun_dev_create(void); 1417 int security_tun_dev_attach_queue(void *security); 1418 int security_tun_dev_attach(struct sock *sk, void *security); 1419 int security_tun_dev_open(void *security); 1420 int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb); 1421 int security_sctp_bind_connect(struct sock *sk, int optname, 1422 struct sockaddr *address, int addrlen); 1423 void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, 1424 struct sock *newsk); 1425 int security_sctp_assoc_established(struct sctp_association *asoc, 1426 struct sk_buff *skb); 1427 1428 #else /* CONFIG_SECURITY_NETWORK */ 1429 static inline int security_unix_stream_connect(struct sock *sock, 1430 struct sock *other, 1431 struct sock *newsk) 1432 { 1433 return 0; 1434 } 1435 1436 static inline int security_unix_may_send(struct socket *sock, 1437 struct socket *other) 1438 { 1439 return 0; 1440 } 1441 1442 static inline int security_socket_create(int family, int type, 1443 int protocol, int kern) 1444 { 1445 return 0; 1446 } 1447 1448 static inline int security_socket_post_create(struct socket *sock, 1449 int family, 1450 int type, 1451 int protocol, int kern) 1452 { 1453 return 0; 1454 } 1455 1456 static inline int security_socket_socketpair(struct socket *socka, 1457 struct socket *sockb) 1458 { 1459 return 0; 1460 } 1461 1462 static inline int security_socket_bind(struct socket *sock, 1463 struct sockaddr *address, 1464 int addrlen) 1465 { 1466 return 0; 1467 } 1468 1469 static inline int security_socket_connect(struct socket *sock, 1470 struct sockaddr *address, 1471 int addrlen) 1472 { 1473 return 0; 1474 } 1475 1476 static inline int security_socket_listen(struct socket *sock, int backlog) 1477 { 1478 return 0; 1479 } 1480 1481 static inline int security_socket_accept(struct socket *sock, 1482 struct socket *newsock) 1483 { 1484 return 0; 1485 } 1486 1487 static inline int security_socket_sendmsg(struct socket *sock, 1488 struct msghdr *msg, int size) 1489 { 1490 return 0; 1491 } 1492 1493 static inline int security_socket_recvmsg(struct socket *sock, 1494 struct msghdr *msg, int size, 1495 int flags) 1496 { 1497 return 0; 1498 } 1499 1500 static inline int security_socket_getsockname(struct socket *sock) 1501 { 1502 return 0; 1503 } 1504 1505 static inline int security_socket_getpeername(struct socket *sock) 1506 { 1507 return 0; 1508 } 1509 1510 static inline int security_socket_getsockopt(struct socket *sock, 1511 int level, int optname) 1512 { 1513 return 0; 1514 } 1515 1516 static inline int security_socket_setsockopt(struct socket *sock, 1517 int level, int optname) 1518 { 1519 return 0; 1520 } 1521 1522 static inline int security_socket_shutdown(struct socket *sock, int how) 1523 { 1524 return 0; 1525 } 1526 static inline int security_sock_rcv_skb(struct sock *sk, 1527 struct sk_buff *skb) 1528 { 1529 return 0; 1530 } 1531 1532 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1533 int __user *optlen, unsigned len) 1534 { 1535 return -ENOPROTOOPT; 1536 } 1537 1538 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1539 { 1540 return -ENOPROTOOPT; 1541 } 1542 1543 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1544 { 1545 return 0; 1546 } 1547 1548 static inline void security_sk_free(struct sock *sk) 1549 { 1550 } 1551 1552 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1553 { 1554 } 1555 1556 static inline void security_sk_classify_flow(struct sock *sk, 1557 struct flowi_common *flic) 1558 { 1559 } 1560 1561 static inline void security_req_classify_flow(const struct request_sock *req, 1562 struct flowi_common *flic) 1563 { 1564 } 1565 1566 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1567 { 1568 } 1569 1570 static inline int security_inet_conn_request(const struct sock *sk, 1571 struct sk_buff *skb, struct request_sock *req) 1572 { 1573 return 0; 1574 } 1575 1576 static inline void security_inet_csk_clone(struct sock *newsk, 1577 const struct request_sock *req) 1578 { 1579 } 1580 1581 static inline void security_inet_conn_established(struct sock *sk, 1582 struct sk_buff *skb) 1583 { 1584 } 1585 1586 static inline int security_secmark_relabel_packet(u32 secid) 1587 { 1588 return 0; 1589 } 1590 1591 static inline void security_secmark_refcount_inc(void) 1592 { 1593 } 1594 1595 static inline void security_secmark_refcount_dec(void) 1596 { 1597 } 1598 1599 static inline int security_tun_dev_alloc_security(void **security) 1600 { 1601 return 0; 1602 } 1603 1604 static inline void security_tun_dev_free_security(void *security) 1605 { 1606 } 1607 1608 static inline int security_tun_dev_create(void) 1609 { 1610 return 0; 1611 } 1612 1613 static inline int security_tun_dev_attach_queue(void *security) 1614 { 1615 return 0; 1616 } 1617 1618 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1619 { 1620 return 0; 1621 } 1622 1623 static inline int security_tun_dev_open(void *security) 1624 { 1625 return 0; 1626 } 1627 1628 static inline int security_sctp_assoc_request(struct sctp_association *asoc, 1629 struct sk_buff *skb) 1630 { 1631 return 0; 1632 } 1633 1634 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1635 struct sockaddr *address, 1636 int addrlen) 1637 { 1638 return 0; 1639 } 1640 1641 static inline void security_sctp_sk_clone(struct sctp_association *asoc, 1642 struct sock *sk, 1643 struct sock *newsk) 1644 { 1645 } 1646 1647 static inline int security_sctp_assoc_established(struct sctp_association *asoc, 1648 struct sk_buff *skb) 1649 { 1650 return 0; 1651 } 1652 #endif /* CONFIG_SECURITY_NETWORK */ 1653 1654 #ifdef CONFIG_SECURITY_INFINIBAND 1655 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1656 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1657 int security_ib_alloc_security(void **sec); 1658 void security_ib_free_security(void *sec); 1659 #else /* CONFIG_SECURITY_INFINIBAND */ 1660 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1661 { 1662 return 0; 1663 } 1664 1665 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1666 { 1667 return 0; 1668 } 1669 1670 static inline int security_ib_alloc_security(void **sec) 1671 { 1672 return 0; 1673 } 1674 1675 static inline void security_ib_free_security(void *sec) 1676 { 1677 } 1678 #endif /* CONFIG_SECURITY_INFINIBAND */ 1679 1680 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1681 1682 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1683 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1684 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1685 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1686 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1687 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1688 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1689 struct xfrm_sec_ctx *polsec, u32 secid); 1690 int security_xfrm_state_delete(struct xfrm_state *x); 1691 void security_xfrm_state_free(struct xfrm_state *x); 1692 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); 1693 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1694 struct xfrm_policy *xp, 1695 const struct flowi_common *flic); 1696 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1697 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1698 1699 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1700 1701 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1702 struct xfrm_user_sec_ctx *sec_ctx, 1703 gfp_t gfp) 1704 { 1705 return 0; 1706 } 1707 1708 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1709 { 1710 return 0; 1711 } 1712 1713 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1714 { 1715 } 1716 1717 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1718 { 1719 return 0; 1720 } 1721 1722 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1723 struct xfrm_user_sec_ctx *sec_ctx) 1724 { 1725 return 0; 1726 } 1727 1728 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1729 struct xfrm_sec_ctx *polsec, u32 secid) 1730 { 1731 return 0; 1732 } 1733 1734 static inline void security_xfrm_state_free(struct xfrm_state *x) 1735 { 1736 } 1737 1738 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1739 { 1740 return 0; 1741 } 1742 1743 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) 1744 { 1745 return 0; 1746 } 1747 1748 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1749 struct xfrm_policy *xp, 1750 const struct flowi_common *flic) 1751 { 1752 return 1; 1753 } 1754 1755 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1756 { 1757 return 0; 1758 } 1759 1760 static inline void security_skb_classify_flow(struct sk_buff *skb, 1761 struct flowi_common *flic) 1762 { 1763 } 1764 1765 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1766 1767 #ifdef CONFIG_SECURITY_PATH 1768 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1769 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1770 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1771 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1772 unsigned int dev); 1773 int security_path_truncate(const struct path *path); 1774 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1775 const char *old_name); 1776 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1777 struct dentry *new_dentry); 1778 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1779 const struct path *new_dir, struct dentry *new_dentry, 1780 unsigned int flags); 1781 int security_path_chmod(const struct path *path, umode_t mode); 1782 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1783 int security_path_chroot(const struct path *path); 1784 #else /* CONFIG_SECURITY_PATH */ 1785 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1786 { 1787 return 0; 1788 } 1789 1790 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1791 umode_t mode) 1792 { 1793 return 0; 1794 } 1795 1796 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1797 { 1798 return 0; 1799 } 1800 1801 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1802 umode_t mode, unsigned int dev) 1803 { 1804 return 0; 1805 } 1806 1807 static inline int security_path_truncate(const struct path *path) 1808 { 1809 return 0; 1810 } 1811 1812 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1813 const char *old_name) 1814 { 1815 return 0; 1816 } 1817 1818 static inline int security_path_link(struct dentry *old_dentry, 1819 const struct path *new_dir, 1820 struct dentry *new_dentry) 1821 { 1822 return 0; 1823 } 1824 1825 static inline int security_path_rename(const struct path *old_dir, 1826 struct dentry *old_dentry, 1827 const struct path *new_dir, 1828 struct dentry *new_dentry, 1829 unsigned int flags) 1830 { 1831 return 0; 1832 } 1833 1834 static inline int security_path_chmod(const struct path *path, umode_t mode) 1835 { 1836 return 0; 1837 } 1838 1839 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1840 { 1841 return 0; 1842 } 1843 1844 static inline int security_path_chroot(const struct path *path) 1845 { 1846 return 0; 1847 } 1848 #endif /* CONFIG_SECURITY_PATH */ 1849 1850 #ifdef CONFIG_KEYS 1851 #ifdef CONFIG_SECURITY 1852 1853 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1854 void security_key_free(struct key *key); 1855 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1856 enum key_need_perm need_perm); 1857 int security_key_getsecurity(struct key *key, char **_buffer); 1858 1859 #else 1860 1861 static inline int security_key_alloc(struct key *key, 1862 const struct cred *cred, 1863 unsigned long flags) 1864 { 1865 return 0; 1866 } 1867 1868 static inline void security_key_free(struct key *key) 1869 { 1870 } 1871 1872 static inline int security_key_permission(key_ref_t key_ref, 1873 const struct cred *cred, 1874 enum key_need_perm need_perm) 1875 { 1876 return 0; 1877 } 1878 1879 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1880 { 1881 *_buffer = NULL; 1882 return 0; 1883 } 1884 1885 #endif 1886 #endif /* CONFIG_KEYS */ 1887 1888 #ifdef CONFIG_AUDIT 1889 #ifdef CONFIG_SECURITY 1890 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1891 int security_audit_rule_known(struct audit_krule *krule); 1892 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1893 void security_audit_rule_free(void *lsmrule); 1894 1895 #else 1896 1897 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1898 void **lsmrule) 1899 { 1900 return 0; 1901 } 1902 1903 static inline int security_audit_rule_known(struct audit_krule *krule) 1904 { 1905 return 0; 1906 } 1907 1908 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1909 void *lsmrule) 1910 { 1911 return 0; 1912 } 1913 1914 static inline void security_audit_rule_free(void *lsmrule) 1915 { } 1916 1917 #endif /* CONFIG_SECURITY */ 1918 #endif /* CONFIG_AUDIT */ 1919 1920 #ifdef CONFIG_SECURITYFS 1921 1922 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1923 struct dentry *parent, void *data, 1924 const struct file_operations *fops); 1925 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1926 struct dentry *securityfs_create_symlink(const char *name, 1927 struct dentry *parent, 1928 const char *target, 1929 const struct inode_operations *iops); 1930 extern void securityfs_remove(struct dentry *dentry); 1931 1932 #else /* CONFIG_SECURITYFS */ 1933 1934 static inline struct dentry *securityfs_create_dir(const char *name, 1935 struct dentry *parent) 1936 { 1937 return ERR_PTR(-ENODEV); 1938 } 1939 1940 static inline struct dentry *securityfs_create_file(const char *name, 1941 umode_t mode, 1942 struct dentry *parent, 1943 void *data, 1944 const struct file_operations *fops) 1945 { 1946 return ERR_PTR(-ENODEV); 1947 } 1948 1949 static inline struct dentry *securityfs_create_symlink(const char *name, 1950 struct dentry *parent, 1951 const char *target, 1952 const struct inode_operations *iops) 1953 { 1954 return ERR_PTR(-ENODEV); 1955 } 1956 1957 static inline void securityfs_remove(struct dentry *dentry) 1958 {} 1959 1960 #endif 1961 1962 #ifdef CONFIG_BPF_SYSCALL 1963 union bpf_attr; 1964 struct bpf_map; 1965 struct bpf_prog; 1966 struct bpf_prog_aux; 1967 #ifdef CONFIG_SECURITY 1968 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1969 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1970 extern int security_bpf_prog(struct bpf_prog *prog); 1971 extern int security_bpf_map_alloc(struct bpf_map *map); 1972 extern void security_bpf_map_free(struct bpf_map *map); 1973 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1974 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1975 #else 1976 static inline int security_bpf(int cmd, union bpf_attr *attr, 1977 unsigned int size) 1978 { 1979 return 0; 1980 } 1981 1982 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1983 { 1984 return 0; 1985 } 1986 1987 static inline int security_bpf_prog(struct bpf_prog *prog) 1988 { 1989 return 0; 1990 } 1991 1992 static inline int security_bpf_map_alloc(struct bpf_map *map) 1993 { 1994 return 0; 1995 } 1996 1997 static inline void security_bpf_map_free(struct bpf_map *map) 1998 { } 1999 2000 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 2001 { 2002 return 0; 2003 } 2004 2005 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 2006 { } 2007 #endif /* CONFIG_SECURITY */ 2008 #endif /* CONFIG_BPF_SYSCALL */ 2009 2010 #ifdef CONFIG_PERF_EVENTS 2011 struct perf_event_attr; 2012 struct perf_event; 2013 2014 #ifdef CONFIG_SECURITY 2015 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 2016 extern int security_perf_event_alloc(struct perf_event *event); 2017 extern void security_perf_event_free(struct perf_event *event); 2018 extern int security_perf_event_read(struct perf_event *event); 2019 extern int security_perf_event_write(struct perf_event *event); 2020 #else 2021 static inline int security_perf_event_open(struct perf_event_attr *attr, 2022 int type) 2023 { 2024 return 0; 2025 } 2026 2027 static inline int security_perf_event_alloc(struct perf_event *event) 2028 { 2029 return 0; 2030 } 2031 2032 static inline void security_perf_event_free(struct perf_event *event) 2033 { 2034 } 2035 2036 static inline int security_perf_event_read(struct perf_event *event) 2037 { 2038 return 0; 2039 } 2040 2041 static inline int security_perf_event_write(struct perf_event *event) 2042 { 2043 return 0; 2044 } 2045 #endif /* CONFIG_SECURITY */ 2046 #endif /* CONFIG_PERF_EVENTS */ 2047 2048 #ifdef CONFIG_IO_URING 2049 #ifdef CONFIG_SECURITY 2050 extern int security_uring_override_creds(const struct cred *new); 2051 extern int security_uring_sqpoll(void); 2052 #else 2053 static inline int security_uring_override_creds(const struct cred *new) 2054 { 2055 return 0; 2056 } 2057 static inline int security_uring_sqpoll(void) 2058 { 2059 return 0; 2060 } 2061 #endif /* CONFIG_SECURITY */ 2062 #endif /* CONFIG_IO_URING */ 2063 2064 #endif /* ! __LINUX_SECURITY_H */ 2065