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