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