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_EFI_TEST, 109 LOCKDOWN_KEXEC, 110 LOCKDOWN_HIBERNATION, 111 LOCKDOWN_PCI_ACCESS, 112 LOCKDOWN_IOPORT, 113 LOCKDOWN_MSR, 114 LOCKDOWN_ACPI_TABLES, 115 LOCKDOWN_PCMCIA_CIS, 116 LOCKDOWN_TIOCSSERIAL, 117 LOCKDOWN_MODULE_PARAMETERS, 118 LOCKDOWN_MMIOTRACE, 119 LOCKDOWN_DEBUGFS, 120 LOCKDOWN_INTEGRITY_MAX, 121 LOCKDOWN_KCORE, 122 LOCKDOWN_KPROBES, 123 LOCKDOWN_BPF_READ, 124 LOCKDOWN_PERF, 125 LOCKDOWN_TRACEFS, 126 LOCKDOWN_CONFIDENTIALITY_MAX, 127 }; 128 129 /* These functions are in security/commoncap.c */ 130 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 131 int cap, unsigned int opts); 132 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 133 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 134 extern int cap_ptrace_traceme(struct task_struct *parent); 135 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 136 extern int cap_capset(struct cred *new, const struct cred *old, 137 const kernel_cap_t *effective, 138 const kernel_cap_t *inheritable, 139 const kernel_cap_t *permitted); 140 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 141 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 142 const void *value, size_t size, int flags); 143 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 144 extern int cap_inode_need_killpriv(struct dentry *dentry); 145 extern int cap_inode_killpriv(struct dentry *dentry); 146 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 147 void **buffer, bool alloc); 148 extern int cap_mmap_addr(unsigned long addr); 149 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 150 unsigned long prot, unsigned long flags); 151 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 152 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 153 unsigned long arg4, unsigned long arg5); 154 extern int cap_task_setscheduler(struct task_struct *p); 155 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 156 extern int cap_task_setnice(struct task_struct *p, int nice); 157 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 158 159 struct msghdr; 160 struct sk_buff; 161 struct sock; 162 struct sockaddr; 163 struct socket; 164 struct flowi; 165 struct dst_entry; 166 struct xfrm_selector; 167 struct xfrm_policy; 168 struct xfrm_state; 169 struct xfrm_user_sec_ctx; 170 struct seq_file; 171 struct sctp_endpoint; 172 173 #ifdef CONFIG_MMU 174 extern unsigned long mmap_min_addr; 175 extern unsigned long dac_mmap_min_addr; 176 #else 177 #define mmap_min_addr 0UL 178 #define dac_mmap_min_addr 0UL 179 #endif 180 181 /* 182 * Values used in the task_security_ops calls 183 */ 184 /* setuid or setgid, id0 == uid or gid */ 185 #define LSM_SETID_ID 1 186 187 /* setreuid or setregid, id0 == real, id1 == eff */ 188 #define LSM_SETID_RE 2 189 190 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 191 #define LSM_SETID_RES 4 192 193 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 194 #define LSM_SETID_FS 8 195 196 /* Flags for security_task_prlimit(). */ 197 #define LSM_PRLIMIT_READ 1 198 #define LSM_PRLIMIT_WRITE 2 199 200 /* forward declares to avoid warnings */ 201 struct sched_param; 202 struct request_sock; 203 204 /* bprm->unsafe reasons */ 205 #define LSM_UNSAFE_SHARE 1 206 #define LSM_UNSAFE_PTRACE 2 207 #define LSM_UNSAFE_NO_NEW_PRIVS 4 208 209 #ifdef CONFIG_MMU 210 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 211 void __user *buffer, size_t *lenp, loff_t *ppos); 212 #endif 213 214 /* security_inode_init_security callback function to write xattrs */ 215 typedef int (*initxattrs) (struct inode *inode, 216 const struct xattr *xattr_array, void *fs_data); 217 218 219 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 220 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 221 #define __data_id_stringify(dummy, str) #str, 222 223 enum kernel_load_data_id { 224 __kernel_read_file_id(__data_id_enumify) 225 }; 226 227 static const char * const kernel_load_data_str[] = { 228 __kernel_read_file_id(__data_id_stringify) 229 }; 230 231 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 232 { 233 if ((unsigned)id >= LOADING_MAX_ID) 234 return kernel_load_data_str[LOADING_UNKNOWN]; 235 236 return kernel_load_data_str[id]; 237 } 238 239 #ifdef CONFIG_SECURITY 240 241 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 242 int register_blocking_lsm_notifier(struct notifier_block *nb); 243 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 244 245 /* prototypes */ 246 extern int security_init(void); 247 extern int early_security_init(void); 248 249 /* Security operations */ 250 int security_binder_set_context_mgr(struct task_struct *mgr); 251 int security_binder_transaction(struct task_struct *from, 252 struct task_struct *to); 253 int security_binder_transfer_binder(struct task_struct *from, 254 struct task_struct *to); 255 int security_binder_transfer_file(struct task_struct *from, 256 struct task_struct *to, struct file *file); 257 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 258 int security_ptrace_traceme(struct task_struct *parent); 259 int security_capget(struct task_struct *target, 260 kernel_cap_t *effective, 261 kernel_cap_t *inheritable, 262 kernel_cap_t *permitted); 263 int security_capset(struct cred *new, const struct cred *old, 264 const kernel_cap_t *effective, 265 const kernel_cap_t *inheritable, 266 const kernel_cap_t *permitted); 267 int security_capable(const struct cred *cred, 268 struct user_namespace *ns, 269 int cap, 270 unsigned int opts); 271 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 272 int security_quota_on(struct dentry *dentry); 273 int security_syslog(int type); 274 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 275 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 276 int security_bprm_set_creds(struct linux_binprm *bprm); 277 int security_bprm_check(struct linux_binprm *bprm); 278 void security_bprm_committing_creds(struct linux_binprm *bprm); 279 void security_bprm_committed_creds(struct linux_binprm *bprm); 280 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 281 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 282 int security_sb_alloc(struct super_block *sb); 283 void security_sb_free(struct super_block *sb); 284 void security_free_mnt_opts(void **mnt_opts); 285 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 286 int security_sb_remount(struct super_block *sb, void *mnt_opts); 287 int security_sb_kern_mount(struct super_block *sb); 288 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 289 int security_sb_statfs(struct dentry *dentry); 290 int security_sb_mount(const char *dev_name, const struct path *path, 291 const char *type, unsigned long flags, void *data); 292 int security_sb_umount(struct vfsmount *mnt, int flags); 293 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 294 int security_sb_set_mnt_opts(struct super_block *sb, 295 void *mnt_opts, 296 unsigned long kern_flags, 297 unsigned long *set_kern_flags); 298 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 299 struct super_block *newsb, 300 unsigned long kern_flags, 301 unsigned long *set_kern_flags); 302 int security_add_mnt_opt(const char *option, const char *val, 303 int len, void **mnt_opts); 304 int security_move_mount(const struct path *from_path, const struct path *to_path); 305 int security_dentry_init_security(struct dentry *dentry, int mode, 306 const struct qstr *name, void **ctx, 307 u32 *ctxlen); 308 int security_dentry_create_files_as(struct dentry *dentry, int mode, 309 struct qstr *name, 310 const struct cred *old, 311 struct cred *new); 312 int security_path_notify(const struct path *path, u64 mask, 313 unsigned int obj_type); 314 int security_inode_alloc(struct inode *inode); 315 void security_inode_free(struct inode *inode); 316 int security_inode_init_security(struct inode *inode, struct inode *dir, 317 const struct qstr *qstr, 318 initxattrs initxattrs, void *fs_data); 319 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 320 const struct qstr *qstr, const char **name, 321 void **value, size_t *len); 322 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 323 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 324 struct dentry *new_dentry); 325 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 326 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 327 const char *old_name); 328 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 329 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 330 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 331 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 332 struct inode *new_dir, struct dentry *new_dentry, 333 unsigned int flags); 334 int security_inode_readlink(struct dentry *dentry); 335 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 336 bool rcu); 337 int security_inode_permission(struct inode *inode, int mask); 338 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 339 int security_inode_getattr(const struct path *path); 340 int security_inode_setxattr(struct dentry *dentry, const char *name, 341 const void *value, size_t size, int flags); 342 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 343 const void *value, size_t size, int flags); 344 int security_inode_getxattr(struct dentry *dentry, const char *name); 345 int security_inode_listxattr(struct dentry *dentry); 346 int security_inode_removexattr(struct dentry *dentry, const char *name); 347 int security_inode_need_killpriv(struct dentry *dentry); 348 int security_inode_killpriv(struct dentry *dentry); 349 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 350 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 351 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 352 void security_inode_getsecid(struct inode *inode, u32 *secid); 353 int security_inode_copy_up(struct dentry *src, struct cred **new); 354 int security_inode_copy_up_xattr(const char *name); 355 int security_kernfs_init_security(struct kernfs_node *kn_dir, 356 struct kernfs_node *kn); 357 int security_file_permission(struct file *file, int mask); 358 int security_file_alloc(struct file *file); 359 void security_file_free(struct file *file); 360 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 361 int security_mmap_file(struct file *file, unsigned long prot, 362 unsigned long flags); 363 int security_mmap_addr(unsigned long addr); 364 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 365 unsigned long prot); 366 int security_file_lock(struct file *file, unsigned int cmd); 367 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 368 void security_file_set_fowner(struct file *file); 369 int security_file_send_sigiotask(struct task_struct *tsk, 370 struct fown_struct *fown, int sig); 371 int security_file_receive(struct file *file); 372 int security_file_open(struct file *file); 373 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 374 void security_task_free(struct task_struct *task); 375 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 376 void security_cred_free(struct cred *cred); 377 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 378 void security_transfer_creds(struct cred *new, const struct cred *old); 379 void security_cred_getsecid(const struct cred *c, u32 *secid); 380 int security_kernel_act_as(struct cred *new, u32 secid); 381 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 382 int security_kernel_module_request(char *kmod_name); 383 int security_kernel_load_data(enum kernel_load_data_id id); 384 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 385 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 386 enum kernel_read_file_id id); 387 int security_task_fix_setuid(struct cred *new, const struct cred *old, 388 int flags); 389 int security_task_setpgid(struct task_struct *p, pid_t pgid); 390 int security_task_getpgid(struct task_struct *p); 391 int security_task_getsid(struct task_struct *p); 392 void security_task_getsecid(struct task_struct *p, u32 *secid); 393 int security_task_setnice(struct task_struct *p, int nice); 394 int security_task_setioprio(struct task_struct *p, int ioprio); 395 int security_task_getioprio(struct task_struct *p); 396 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 397 unsigned int flags); 398 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 399 struct rlimit *new_rlim); 400 int security_task_setscheduler(struct task_struct *p); 401 int security_task_getscheduler(struct task_struct *p); 402 int security_task_movememory(struct task_struct *p); 403 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 404 int sig, const struct cred *cred); 405 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 406 unsigned long arg4, unsigned long arg5); 407 void security_task_to_inode(struct task_struct *p, struct inode *inode); 408 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 409 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 410 int security_msg_msg_alloc(struct msg_msg *msg); 411 void security_msg_msg_free(struct msg_msg *msg); 412 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 413 void security_msg_queue_free(struct kern_ipc_perm *msq); 414 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 415 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 416 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 417 struct msg_msg *msg, int msqflg); 418 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 419 struct task_struct *target, long type, int mode); 420 int security_shm_alloc(struct kern_ipc_perm *shp); 421 void security_shm_free(struct kern_ipc_perm *shp); 422 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 423 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 424 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 425 int security_sem_alloc(struct kern_ipc_perm *sma); 426 void security_sem_free(struct kern_ipc_perm *sma); 427 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 428 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 429 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 430 unsigned nsops, int alter); 431 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 432 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 433 char **value); 434 int security_setprocattr(const char *lsm, const char *name, void *value, 435 size_t size); 436 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 437 int security_ismaclabel(const char *name); 438 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 439 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 440 void security_release_secctx(char *secdata, u32 seclen); 441 void security_inode_invalidate_secctx(struct inode *inode); 442 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 443 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 444 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 445 int security_locked_down(enum lockdown_reason what); 446 #else /* CONFIG_SECURITY */ 447 448 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 449 { 450 return 0; 451 } 452 453 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 454 { 455 return 0; 456 } 457 458 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 459 { 460 return 0; 461 } 462 463 static inline void security_free_mnt_opts(void **mnt_opts) 464 { 465 } 466 467 /* 468 * This is the default capabilities functionality. Most of these functions 469 * are just stubbed out, but a few must call the proper capable code. 470 */ 471 472 static inline int security_init(void) 473 { 474 return 0; 475 } 476 477 static inline int early_security_init(void) 478 { 479 return 0; 480 } 481 482 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 483 { 484 return 0; 485 } 486 487 static inline int security_binder_transaction(struct task_struct *from, 488 struct task_struct *to) 489 { 490 return 0; 491 } 492 493 static inline int security_binder_transfer_binder(struct task_struct *from, 494 struct task_struct *to) 495 { 496 return 0; 497 } 498 499 static inline int security_binder_transfer_file(struct task_struct *from, 500 struct task_struct *to, 501 struct file *file) 502 { 503 return 0; 504 } 505 506 static inline int security_ptrace_access_check(struct task_struct *child, 507 unsigned int mode) 508 { 509 return cap_ptrace_access_check(child, mode); 510 } 511 512 static inline int security_ptrace_traceme(struct task_struct *parent) 513 { 514 return cap_ptrace_traceme(parent); 515 } 516 517 static inline int security_capget(struct task_struct *target, 518 kernel_cap_t *effective, 519 kernel_cap_t *inheritable, 520 kernel_cap_t *permitted) 521 { 522 return cap_capget(target, effective, inheritable, permitted); 523 } 524 525 static inline int security_capset(struct cred *new, 526 const struct cred *old, 527 const kernel_cap_t *effective, 528 const kernel_cap_t *inheritable, 529 const kernel_cap_t *permitted) 530 { 531 return cap_capset(new, old, effective, inheritable, permitted); 532 } 533 534 static inline int security_capable(const struct cred *cred, 535 struct user_namespace *ns, 536 int cap, 537 unsigned int opts) 538 { 539 return cap_capable(cred, ns, cap, opts); 540 } 541 542 static inline int security_quotactl(int cmds, int type, int id, 543 struct super_block *sb) 544 { 545 return 0; 546 } 547 548 static inline int security_quota_on(struct dentry *dentry) 549 { 550 return 0; 551 } 552 553 static inline int security_syslog(int type) 554 { 555 return 0; 556 } 557 558 static inline int security_settime64(const struct timespec64 *ts, 559 const struct timezone *tz) 560 { 561 return cap_settime(ts, tz); 562 } 563 564 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 565 { 566 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 567 } 568 569 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 570 { 571 return cap_bprm_set_creds(bprm); 572 } 573 574 static inline int security_bprm_check(struct linux_binprm *bprm) 575 { 576 return 0; 577 } 578 579 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 580 { 581 } 582 583 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 584 { 585 } 586 587 static inline int security_fs_context_dup(struct fs_context *fc, 588 struct fs_context *src_fc) 589 { 590 return 0; 591 } 592 static inline int security_fs_context_parse_param(struct fs_context *fc, 593 struct fs_parameter *param) 594 { 595 return -ENOPARAM; 596 } 597 598 static inline int security_sb_alloc(struct super_block *sb) 599 { 600 return 0; 601 } 602 603 static inline void security_sb_free(struct super_block *sb) 604 { } 605 606 static inline int security_sb_eat_lsm_opts(char *options, 607 void **mnt_opts) 608 { 609 return 0; 610 } 611 612 static inline int security_sb_remount(struct super_block *sb, 613 void *mnt_opts) 614 { 615 return 0; 616 } 617 618 static inline int security_sb_kern_mount(struct super_block *sb) 619 { 620 return 0; 621 } 622 623 static inline int security_sb_show_options(struct seq_file *m, 624 struct super_block *sb) 625 { 626 return 0; 627 } 628 629 static inline int security_sb_statfs(struct dentry *dentry) 630 { 631 return 0; 632 } 633 634 static inline int security_sb_mount(const char *dev_name, const struct path *path, 635 const char *type, unsigned long flags, 636 void *data) 637 { 638 return 0; 639 } 640 641 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 642 { 643 return 0; 644 } 645 646 static inline int security_sb_pivotroot(const struct path *old_path, 647 const struct path *new_path) 648 { 649 return 0; 650 } 651 652 static inline int security_sb_set_mnt_opts(struct super_block *sb, 653 void *mnt_opts, 654 unsigned long kern_flags, 655 unsigned long *set_kern_flags) 656 { 657 return 0; 658 } 659 660 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 661 struct super_block *newsb, 662 unsigned long kern_flags, 663 unsigned long *set_kern_flags) 664 { 665 return 0; 666 } 667 668 static inline int security_add_mnt_opt(const char *option, const char *val, 669 int len, void **mnt_opts) 670 { 671 return 0; 672 } 673 674 static inline int security_move_mount(const struct path *from_path, 675 const struct path *to_path) 676 { 677 return 0; 678 } 679 680 static inline int security_path_notify(const struct path *path, u64 mask, 681 unsigned int obj_type) 682 { 683 return 0; 684 } 685 686 static inline int security_inode_alloc(struct inode *inode) 687 { 688 return 0; 689 } 690 691 static inline void security_inode_free(struct inode *inode) 692 { } 693 694 static inline int security_dentry_init_security(struct dentry *dentry, 695 int mode, 696 const struct qstr *name, 697 void **ctx, 698 u32 *ctxlen) 699 { 700 return -EOPNOTSUPP; 701 } 702 703 static inline int security_dentry_create_files_as(struct dentry *dentry, 704 int mode, struct qstr *name, 705 const struct cred *old, 706 struct cred *new) 707 { 708 return 0; 709 } 710 711 712 static inline int security_inode_init_security(struct inode *inode, 713 struct inode *dir, 714 const struct qstr *qstr, 715 const initxattrs xattrs, 716 void *fs_data) 717 { 718 return 0; 719 } 720 721 static inline int security_old_inode_init_security(struct inode *inode, 722 struct inode *dir, 723 const struct qstr *qstr, 724 const char **name, 725 void **value, size_t *len) 726 { 727 return -EOPNOTSUPP; 728 } 729 730 static inline int security_inode_create(struct inode *dir, 731 struct dentry *dentry, 732 umode_t mode) 733 { 734 return 0; 735 } 736 737 static inline int security_inode_link(struct dentry *old_dentry, 738 struct inode *dir, 739 struct dentry *new_dentry) 740 { 741 return 0; 742 } 743 744 static inline int security_inode_unlink(struct inode *dir, 745 struct dentry *dentry) 746 { 747 return 0; 748 } 749 750 static inline int security_inode_symlink(struct inode *dir, 751 struct dentry *dentry, 752 const char *old_name) 753 { 754 return 0; 755 } 756 757 static inline int security_inode_mkdir(struct inode *dir, 758 struct dentry *dentry, 759 int mode) 760 { 761 return 0; 762 } 763 764 static inline int security_inode_rmdir(struct inode *dir, 765 struct dentry *dentry) 766 { 767 return 0; 768 } 769 770 static inline int security_inode_mknod(struct inode *dir, 771 struct dentry *dentry, 772 int mode, dev_t dev) 773 { 774 return 0; 775 } 776 777 static inline int security_inode_rename(struct inode *old_dir, 778 struct dentry *old_dentry, 779 struct inode *new_dir, 780 struct dentry *new_dentry, 781 unsigned int flags) 782 { 783 return 0; 784 } 785 786 static inline int security_inode_readlink(struct dentry *dentry) 787 { 788 return 0; 789 } 790 791 static inline int security_inode_follow_link(struct dentry *dentry, 792 struct inode *inode, 793 bool rcu) 794 { 795 return 0; 796 } 797 798 static inline int security_inode_permission(struct inode *inode, int mask) 799 { 800 return 0; 801 } 802 803 static inline int security_inode_setattr(struct dentry *dentry, 804 struct iattr *attr) 805 { 806 return 0; 807 } 808 809 static inline int security_inode_getattr(const struct path *path) 810 { 811 return 0; 812 } 813 814 static inline int security_inode_setxattr(struct dentry *dentry, 815 const char *name, const void *value, size_t size, int flags) 816 { 817 return cap_inode_setxattr(dentry, name, value, size, flags); 818 } 819 820 static inline void security_inode_post_setxattr(struct dentry *dentry, 821 const char *name, const void *value, size_t size, int flags) 822 { } 823 824 static inline int security_inode_getxattr(struct dentry *dentry, 825 const char *name) 826 { 827 return 0; 828 } 829 830 static inline int security_inode_listxattr(struct dentry *dentry) 831 { 832 return 0; 833 } 834 835 static inline int security_inode_removexattr(struct dentry *dentry, 836 const char *name) 837 { 838 return cap_inode_removexattr(dentry, name); 839 } 840 841 static inline int security_inode_need_killpriv(struct dentry *dentry) 842 { 843 return cap_inode_need_killpriv(dentry); 844 } 845 846 static inline int security_inode_killpriv(struct dentry *dentry) 847 { 848 return cap_inode_killpriv(dentry); 849 } 850 851 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 852 { 853 return -EOPNOTSUPP; 854 } 855 856 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 857 { 858 return -EOPNOTSUPP; 859 } 860 861 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 862 { 863 return 0; 864 } 865 866 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 867 { 868 *secid = 0; 869 } 870 871 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 872 { 873 return 0; 874 } 875 876 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 877 struct kernfs_node *kn) 878 { 879 return 0; 880 } 881 882 static inline int security_inode_copy_up_xattr(const char *name) 883 { 884 return -EOPNOTSUPP; 885 } 886 887 static inline int security_file_permission(struct file *file, int mask) 888 { 889 return 0; 890 } 891 892 static inline int security_file_alloc(struct file *file) 893 { 894 return 0; 895 } 896 897 static inline void security_file_free(struct file *file) 898 { } 899 900 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 901 unsigned long arg) 902 { 903 return 0; 904 } 905 906 static inline int security_mmap_file(struct file *file, unsigned long prot, 907 unsigned long flags) 908 { 909 return 0; 910 } 911 912 static inline int security_mmap_addr(unsigned long addr) 913 { 914 return cap_mmap_addr(addr); 915 } 916 917 static inline int security_file_mprotect(struct vm_area_struct *vma, 918 unsigned long reqprot, 919 unsigned long prot) 920 { 921 return 0; 922 } 923 924 static inline int security_file_lock(struct file *file, unsigned int cmd) 925 { 926 return 0; 927 } 928 929 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 930 unsigned long arg) 931 { 932 return 0; 933 } 934 935 static inline void security_file_set_fowner(struct file *file) 936 { 937 return; 938 } 939 940 static inline int security_file_send_sigiotask(struct task_struct *tsk, 941 struct fown_struct *fown, 942 int sig) 943 { 944 return 0; 945 } 946 947 static inline int security_file_receive(struct file *file) 948 { 949 return 0; 950 } 951 952 static inline int security_file_open(struct file *file) 953 { 954 return 0; 955 } 956 957 static inline int security_task_alloc(struct task_struct *task, 958 unsigned long clone_flags) 959 { 960 return 0; 961 } 962 963 static inline void security_task_free(struct task_struct *task) 964 { } 965 966 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 967 { 968 return 0; 969 } 970 971 static inline void security_cred_free(struct cred *cred) 972 { } 973 974 static inline int security_prepare_creds(struct cred *new, 975 const struct cred *old, 976 gfp_t gfp) 977 { 978 return 0; 979 } 980 981 static inline void security_transfer_creds(struct cred *new, 982 const struct cred *old) 983 { 984 } 985 986 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 987 { 988 return 0; 989 } 990 991 static inline int security_kernel_create_files_as(struct cred *cred, 992 struct inode *inode) 993 { 994 return 0; 995 } 996 997 static inline int security_kernel_module_request(char *kmod_name) 998 { 999 return 0; 1000 } 1001 1002 static inline int security_kernel_load_data(enum kernel_load_data_id id) 1003 { 1004 return 0; 1005 } 1006 1007 static inline int security_kernel_read_file(struct file *file, 1008 enum kernel_read_file_id id) 1009 { 1010 return 0; 1011 } 1012 1013 static inline int security_kernel_post_read_file(struct file *file, 1014 char *buf, loff_t size, 1015 enum kernel_read_file_id id) 1016 { 1017 return 0; 1018 } 1019 1020 static inline int security_task_fix_setuid(struct cred *new, 1021 const struct cred *old, 1022 int flags) 1023 { 1024 return cap_task_fix_setuid(new, old, flags); 1025 } 1026 1027 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1028 { 1029 return 0; 1030 } 1031 1032 static inline int security_task_getpgid(struct task_struct *p) 1033 { 1034 return 0; 1035 } 1036 1037 static inline int security_task_getsid(struct task_struct *p) 1038 { 1039 return 0; 1040 } 1041 1042 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1043 { 1044 *secid = 0; 1045 } 1046 1047 static inline int security_task_setnice(struct task_struct *p, int nice) 1048 { 1049 return cap_task_setnice(p, nice); 1050 } 1051 1052 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1053 { 1054 return cap_task_setioprio(p, ioprio); 1055 } 1056 1057 static inline int security_task_getioprio(struct task_struct *p) 1058 { 1059 return 0; 1060 } 1061 1062 static inline int security_task_prlimit(const struct cred *cred, 1063 const struct cred *tcred, 1064 unsigned int flags) 1065 { 1066 return 0; 1067 } 1068 1069 static inline int security_task_setrlimit(struct task_struct *p, 1070 unsigned int resource, 1071 struct rlimit *new_rlim) 1072 { 1073 return 0; 1074 } 1075 1076 static inline int security_task_setscheduler(struct task_struct *p) 1077 { 1078 return cap_task_setscheduler(p); 1079 } 1080 1081 static inline int security_task_getscheduler(struct task_struct *p) 1082 { 1083 return 0; 1084 } 1085 1086 static inline int security_task_movememory(struct task_struct *p) 1087 { 1088 return 0; 1089 } 1090 1091 static inline int security_task_kill(struct task_struct *p, 1092 struct kernel_siginfo *info, int sig, 1093 const struct cred *cred) 1094 { 1095 return 0; 1096 } 1097 1098 static inline int security_task_prctl(int option, unsigned long arg2, 1099 unsigned long arg3, 1100 unsigned long arg4, 1101 unsigned long arg5) 1102 { 1103 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1104 } 1105 1106 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1107 { } 1108 1109 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1110 short flag) 1111 { 1112 return 0; 1113 } 1114 1115 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1116 { 1117 *secid = 0; 1118 } 1119 1120 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1121 { 1122 return 0; 1123 } 1124 1125 static inline void security_msg_msg_free(struct msg_msg *msg) 1126 { } 1127 1128 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1129 { 1130 return 0; 1131 } 1132 1133 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1134 { } 1135 1136 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1137 int msqflg) 1138 { 1139 return 0; 1140 } 1141 1142 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1143 { 1144 return 0; 1145 } 1146 1147 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1148 struct msg_msg *msg, int msqflg) 1149 { 1150 return 0; 1151 } 1152 1153 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1154 struct msg_msg *msg, 1155 struct task_struct *target, 1156 long type, int mode) 1157 { 1158 return 0; 1159 } 1160 1161 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1162 { 1163 return 0; 1164 } 1165 1166 static inline void security_shm_free(struct kern_ipc_perm *shp) 1167 { } 1168 1169 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1170 int shmflg) 1171 { 1172 return 0; 1173 } 1174 1175 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1176 { 1177 return 0; 1178 } 1179 1180 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1181 char __user *shmaddr, int shmflg) 1182 { 1183 return 0; 1184 } 1185 1186 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1187 { 1188 return 0; 1189 } 1190 1191 static inline void security_sem_free(struct kern_ipc_perm *sma) 1192 { } 1193 1194 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1195 { 1196 return 0; 1197 } 1198 1199 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1200 { 1201 return 0; 1202 } 1203 1204 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1205 struct sembuf *sops, unsigned nsops, 1206 int alter) 1207 { 1208 return 0; 1209 } 1210 1211 static inline void security_d_instantiate(struct dentry *dentry, 1212 struct inode *inode) 1213 { } 1214 1215 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1216 char *name, char **value) 1217 { 1218 return -EINVAL; 1219 } 1220 1221 static inline int security_setprocattr(const char *lsm, char *name, 1222 void *value, size_t size) 1223 { 1224 return -EINVAL; 1225 } 1226 1227 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1228 { 1229 return 0; 1230 } 1231 1232 static inline int security_ismaclabel(const char *name) 1233 { 1234 return 0; 1235 } 1236 1237 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1238 { 1239 return -EOPNOTSUPP; 1240 } 1241 1242 static inline int security_secctx_to_secid(const char *secdata, 1243 u32 seclen, 1244 u32 *secid) 1245 { 1246 return -EOPNOTSUPP; 1247 } 1248 1249 static inline void security_release_secctx(char *secdata, u32 seclen) 1250 { 1251 } 1252 1253 static inline void security_inode_invalidate_secctx(struct inode *inode) 1254 { 1255 } 1256 1257 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1258 { 1259 return -EOPNOTSUPP; 1260 } 1261 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1262 { 1263 return -EOPNOTSUPP; 1264 } 1265 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1266 { 1267 return -EOPNOTSUPP; 1268 } 1269 static inline int security_locked_down(enum lockdown_reason what) 1270 { 1271 return 0; 1272 } 1273 #endif /* CONFIG_SECURITY */ 1274 1275 #ifdef CONFIG_SECURITY_NETWORK 1276 1277 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1278 int security_unix_may_send(struct socket *sock, struct socket *other); 1279 int security_socket_create(int family, int type, int protocol, int kern); 1280 int security_socket_post_create(struct socket *sock, int family, 1281 int type, int protocol, int kern); 1282 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1283 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1284 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1285 int security_socket_listen(struct socket *sock, int backlog); 1286 int security_socket_accept(struct socket *sock, struct socket *newsock); 1287 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1288 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1289 int size, int flags); 1290 int security_socket_getsockname(struct socket *sock); 1291 int security_socket_getpeername(struct socket *sock); 1292 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1293 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1294 int security_socket_shutdown(struct socket *sock, int how); 1295 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1296 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1297 int __user *optlen, unsigned len); 1298 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1299 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1300 void security_sk_free(struct sock *sk); 1301 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1302 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1303 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1304 void security_sock_graft(struct sock*sk, struct socket *parent); 1305 int security_inet_conn_request(struct sock *sk, 1306 struct sk_buff *skb, struct request_sock *req); 1307 void security_inet_csk_clone(struct sock *newsk, 1308 const struct request_sock *req); 1309 void security_inet_conn_established(struct sock *sk, 1310 struct sk_buff *skb); 1311 int security_secmark_relabel_packet(u32 secid); 1312 void security_secmark_refcount_inc(void); 1313 void security_secmark_refcount_dec(void); 1314 int security_tun_dev_alloc_security(void **security); 1315 void security_tun_dev_free_security(void *security); 1316 int security_tun_dev_create(void); 1317 int security_tun_dev_attach_queue(void *security); 1318 int security_tun_dev_attach(struct sock *sk, void *security); 1319 int security_tun_dev_open(void *security); 1320 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1321 int security_sctp_bind_connect(struct sock *sk, int optname, 1322 struct sockaddr *address, int addrlen); 1323 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1324 struct sock *newsk); 1325 1326 #else /* CONFIG_SECURITY_NETWORK */ 1327 static inline int security_unix_stream_connect(struct sock *sock, 1328 struct sock *other, 1329 struct sock *newsk) 1330 { 1331 return 0; 1332 } 1333 1334 static inline int security_unix_may_send(struct socket *sock, 1335 struct socket *other) 1336 { 1337 return 0; 1338 } 1339 1340 static inline int security_socket_create(int family, int type, 1341 int protocol, int kern) 1342 { 1343 return 0; 1344 } 1345 1346 static inline int security_socket_post_create(struct socket *sock, 1347 int family, 1348 int type, 1349 int protocol, int kern) 1350 { 1351 return 0; 1352 } 1353 1354 static inline int security_socket_socketpair(struct socket *socka, 1355 struct socket *sockb) 1356 { 1357 return 0; 1358 } 1359 1360 static inline int security_socket_bind(struct socket *sock, 1361 struct sockaddr *address, 1362 int addrlen) 1363 { 1364 return 0; 1365 } 1366 1367 static inline int security_socket_connect(struct socket *sock, 1368 struct sockaddr *address, 1369 int addrlen) 1370 { 1371 return 0; 1372 } 1373 1374 static inline int security_socket_listen(struct socket *sock, int backlog) 1375 { 1376 return 0; 1377 } 1378 1379 static inline int security_socket_accept(struct socket *sock, 1380 struct socket *newsock) 1381 { 1382 return 0; 1383 } 1384 1385 static inline int security_socket_sendmsg(struct socket *sock, 1386 struct msghdr *msg, int size) 1387 { 1388 return 0; 1389 } 1390 1391 static inline int security_socket_recvmsg(struct socket *sock, 1392 struct msghdr *msg, int size, 1393 int flags) 1394 { 1395 return 0; 1396 } 1397 1398 static inline int security_socket_getsockname(struct socket *sock) 1399 { 1400 return 0; 1401 } 1402 1403 static inline int security_socket_getpeername(struct socket *sock) 1404 { 1405 return 0; 1406 } 1407 1408 static inline int security_socket_getsockopt(struct socket *sock, 1409 int level, int optname) 1410 { 1411 return 0; 1412 } 1413 1414 static inline int security_socket_setsockopt(struct socket *sock, 1415 int level, int optname) 1416 { 1417 return 0; 1418 } 1419 1420 static inline int security_socket_shutdown(struct socket *sock, int how) 1421 { 1422 return 0; 1423 } 1424 static inline int security_sock_rcv_skb(struct sock *sk, 1425 struct sk_buff *skb) 1426 { 1427 return 0; 1428 } 1429 1430 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1431 int __user *optlen, unsigned len) 1432 { 1433 return -ENOPROTOOPT; 1434 } 1435 1436 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1437 { 1438 return -ENOPROTOOPT; 1439 } 1440 1441 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1442 { 1443 return 0; 1444 } 1445 1446 static inline void security_sk_free(struct sock *sk) 1447 { 1448 } 1449 1450 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1451 { 1452 } 1453 1454 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1455 { 1456 } 1457 1458 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1459 { 1460 } 1461 1462 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1463 { 1464 } 1465 1466 static inline int security_inet_conn_request(struct sock *sk, 1467 struct sk_buff *skb, struct request_sock *req) 1468 { 1469 return 0; 1470 } 1471 1472 static inline void security_inet_csk_clone(struct sock *newsk, 1473 const struct request_sock *req) 1474 { 1475 } 1476 1477 static inline void security_inet_conn_established(struct sock *sk, 1478 struct sk_buff *skb) 1479 { 1480 } 1481 1482 static inline int security_secmark_relabel_packet(u32 secid) 1483 { 1484 return 0; 1485 } 1486 1487 static inline void security_secmark_refcount_inc(void) 1488 { 1489 } 1490 1491 static inline void security_secmark_refcount_dec(void) 1492 { 1493 } 1494 1495 static inline int security_tun_dev_alloc_security(void **security) 1496 { 1497 return 0; 1498 } 1499 1500 static inline void security_tun_dev_free_security(void *security) 1501 { 1502 } 1503 1504 static inline int security_tun_dev_create(void) 1505 { 1506 return 0; 1507 } 1508 1509 static inline int security_tun_dev_attach_queue(void *security) 1510 { 1511 return 0; 1512 } 1513 1514 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1515 { 1516 return 0; 1517 } 1518 1519 static inline int security_tun_dev_open(void *security) 1520 { 1521 return 0; 1522 } 1523 1524 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1525 struct sk_buff *skb) 1526 { 1527 return 0; 1528 } 1529 1530 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1531 struct sockaddr *address, 1532 int addrlen) 1533 { 1534 return 0; 1535 } 1536 1537 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1538 struct sock *sk, 1539 struct sock *newsk) 1540 { 1541 } 1542 #endif /* CONFIG_SECURITY_NETWORK */ 1543 1544 #ifdef CONFIG_SECURITY_INFINIBAND 1545 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1546 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1547 int security_ib_alloc_security(void **sec); 1548 void security_ib_free_security(void *sec); 1549 #else /* CONFIG_SECURITY_INFINIBAND */ 1550 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1551 { 1552 return 0; 1553 } 1554 1555 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1556 { 1557 return 0; 1558 } 1559 1560 static inline int security_ib_alloc_security(void **sec) 1561 { 1562 return 0; 1563 } 1564 1565 static inline void security_ib_free_security(void *sec) 1566 { 1567 } 1568 #endif /* CONFIG_SECURITY_INFINIBAND */ 1569 1570 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1571 1572 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1573 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1574 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1575 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1576 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1577 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1578 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1579 struct xfrm_sec_ctx *polsec, u32 secid); 1580 int security_xfrm_state_delete(struct xfrm_state *x); 1581 void security_xfrm_state_free(struct xfrm_state *x); 1582 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1583 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1584 struct xfrm_policy *xp, 1585 const struct flowi *fl); 1586 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1587 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1588 1589 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1590 1591 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1592 struct xfrm_user_sec_ctx *sec_ctx, 1593 gfp_t gfp) 1594 { 1595 return 0; 1596 } 1597 1598 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1599 { 1600 return 0; 1601 } 1602 1603 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1604 { 1605 } 1606 1607 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1608 { 1609 return 0; 1610 } 1611 1612 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1613 struct xfrm_user_sec_ctx *sec_ctx) 1614 { 1615 return 0; 1616 } 1617 1618 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1619 struct xfrm_sec_ctx *polsec, u32 secid) 1620 { 1621 return 0; 1622 } 1623 1624 static inline void security_xfrm_state_free(struct xfrm_state *x) 1625 { 1626 } 1627 1628 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1629 { 1630 return 0; 1631 } 1632 1633 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1634 { 1635 return 0; 1636 } 1637 1638 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1639 struct xfrm_policy *xp, const struct flowi *fl) 1640 { 1641 return 1; 1642 } 1643 1644 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1645 { 1646 return 0; 1647 } 1648 1649 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1650 { 1651 } 1652 1653 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1654 1655 #ifdef CONFIG_SECURITY_PATH 1656 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1657 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1658 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1659 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1660 unsigned int dev); 1661 int security_path_truncate(const struct path *path); 1662 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1663 const char *old_name); 1664 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1665 struct dentry *new_dentry); 1666 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1667 const struct path *new_dir, struct dentry *new_dentry, 1668 unsigned int flags); 1669 int security_path_chmod(const struct path *path, umode_t mode); 1670 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1671 int security_path_chroot(const struct path *path); 1672 #else /* CONFIG_SECURITY_PATH */ 1673 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1674 { 1675 return 0; 1676 } 1677 1678 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1679 umode_t mode) 1680 { 1681 return 0; 1682 } 1683 1684 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1685 { 1686 return 0; 1687 } 1688 1689 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1690 umode_t mode, unsigned int dev) 1691 { 1692 return 0; 1693 } 1694 1695 static inline int security_path_truncate(const struct path *path) 1696 { 1697 return 0; 1698 } 1699 1700 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1701 const char *old_name) 1702 { 1703 return 0; 1704 } 1705 1706 static inline int security_path_link(struct dentry *old_dentry, 1707 const struct path *new_dir, 1708 struct dentry *new_dentry) 1709 { 1710 return 0; 1711 } 1712 1713 static inline int security_path_rename(const struct path *old_dir, 1714 struct dentry *old_dentry, 1715 const struct path *new_dir, 1716 struct dentry *new_dentry, 1717 unsigned int flags) 1718 { 1719 return 0; 1720 } 1721 1722 static inline int security_path_chmod(const struct path *path, umode_t mode) 1723 { 1724 return 0; 1725 } 1726 1727 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1728 { 1729 return 0; 1730 } 1731 1732 static inline int security_path_chroot(const struct path *path) 1733 { 1734 return 0; 1735 } 1736 #endif /* CONFIG_SECURITY_PATH */ 1737 1738 #ifdef CONFIG_KEYS 1739 #ifdef CONFIG_SECURITY 1740 1741 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1742 void security_key_free(struct key *key); 1743 int security_key_permission(key_ref_t key_ref, 1744 const struct cred *cred, unsigned perm); 1745 int security_key_getsecurity(struct key *key, char **_buffer); 1746 1747 #else 1748 1749 static inline int security_key_alloc(struct key *key, 1750 const struct cred *cred, 1751 unsigned long flags) 1752 { 1753 return 0; 1754 } 1755 1756 static inline void security_key_free(struct key *key) 1757 { 1758 } 1759 1760 static inline int security_key_permission(key_ref_t key_ref, 1761 const struct cred *cred, 1762 unsigned perm) 1763 { 1764 return 0; 1765 } 1766 1767 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1768 { 1769 *_buffer = NULL; 1770 return 0; 1771 } 1772 1773 #endif 1774 #endif /* CONFIG_KEYS */ 1775 1776 #ifdef CONFIG_AUDIT 1777 #ifdef CONFIG_SECURITY 1778 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1779 int security_audit_rule_known(struct audit_krule *krule); 1780 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1781 void security_audit_rule_free(void *lsmrule); 1782 1783 #else 1784 1785 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1786 void **lsmrule) 1787 { 1788 return 0; 1789 } 1790 1791 static inline int security_audit_rule_known(struct audit_krule *krule) 1792 { 1793 return 0; 1794 } 1795 1796 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1797 void *lsmrule) 1798 { 1799 return 0; 1800 } 1801 1802 static inline void security_audit_rule_free(void *lsmrule) 1803 { } 1804 1805 #endif /* CONFIG_SECURITY */ 1806 #endif /* CONFIG_AUDIT */ 1807 1808 #ifdef CONFIG_SECURITYFS 1809 1810 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1811 struct dentry *parent, void *data, 1812 const struct file_operations *fops); 1813 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1814 struct dentry *securityfs_create_symlink(const char *name, 1815 struct dentry *parent, 1816 const char *target, 1817 const struct inode_operations *iops); 1818 extern void securityfs_remove(struct dentry *dentry); 1819 1820 #else /* CONFIG_SECURITYFS */ 1821 1822 static inline struct dentry *securityfs_create_dir(const char *name, 1823 struct dentry *parent) 1824 { 1825 return ERR_PTR(-ENODEV); 1826 } 1827 1828 static inline struct dentry *securityfs_create_file(const char *name, 1829 umode_t mode, 1830 struct dentry *parent, 1831 void *data, 1832 const struct file_operations *fops) 1833 { 1834 return ERR_PTR(-ENODEV); 1835 } 1836 1837 static inline struct dentry *securityfs_create_symlink(const char *name, 1838 struct dentry *parent, 1839 const char *target, 1840 const struct inode_operations *iops) 1841 { 1842 return ERR_PTR(-ENODEV); 1843 } 1844 1845 static inline void securityfs_remove(struct dentry *dentry) 1846 {} 1847 1848 #endif 1849 1850 #ifdef CONFIG_BPF_SYSCALL 1851 union bpf_attr; 1852 struct bpf_map; 1853 struct bpf_prog; 1854 struct bpf_prog_aux; 1855 #ifdef CONFIG_SECURITY 1856 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1857 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1858 extern int security_bpf_prog(struct bpf_prog *prog); 1859 extern int security_bpf_map_alloc(struct bpf_map *map); 1860 extern void security_bpf_map_free(struct bpf_map *map); 1861 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1862 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1863 #else 1864 static inline int security_bpf(int cmd, union bpf_attr *attr, 1865 unsigned int size) 1866 { 1867 return 0; 1868 } 1869 1870 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1871 { 1872 return 0; 1873 } 1874 1875 static inline int security_bpf_prog(struct bpf_prog *prog) 1876 { 1877 return 0; 1878 } 1879 1880 static inline int security_bpf_map_alloc(struct bpf_map *map) 1881 { 1882 return 0; 1883 } 1884 1885 static inline void security_bpf_map_free(struct bpf_map *map) 1886 { } 1887 1888 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1889 { 1890 return 0; 1891 } 1892 1893 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1894 { } 1895 #endif /* CONFIG_SECURITY */ 1896 #endif /* CONFIG_BPF_SYSCALL */ 1897 1898 #endif /* ! __LINUX_SECURITY_H */ 1899 1900