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