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