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