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_XMON_WR, 121 LOCKDOWN_INTEGRITY_MAX, 122 LOCKDOWN_KCORE, 123 LOCKDOWN_KPROBES, 124 LOCKDOWN_BPF_READ, 125 LOCKDOWN_PERF, 126 LOCKDOWN_TRACEFS, 127 LOCKDOWN_XMON_RW, 128 LOCKDOWN_CONFIDENTIALITY_MAX, 129 }; 130 131 /* These functions are in security/commoncap.c */ 132 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 133 int cap, unsigned int opts); 134 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 135 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 136 extern int cap_ptrace_traceme(struct task_struct *parent); 137 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 138 extern int cap_capset(struct cred *new, const struct cred *old, 139 const kernel_cap_t *effective, 140 const kernel_cap_t *inheritable, 141 const kernel_cap_t *permitted); 142 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 143 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 144 const void *value, size_t size, int flags); 145 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 146 extern int cap_inode_need_killpriv(struct dentry *dentry); 147 extern int cap_inode_killpriv(struct dentry *dentry); 148 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 149 void **buffer, bool alloc); 150 extern int cap_mmap_addr(unsigned long addr); 151 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 152 unsigned long prot, unsigned long flags); 153 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 154 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 155 unsigned long arg4, unsigned long arg5); 156 extern int cap_task_setscheduler(struct task_struct *p); 157 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 158 extern int cap_task_setnice(struct task_struct *p, int nice); 159 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 160 161 struct msghdr; 162 struct sk_buff; 163 struct sock; 164 struct sockaddr; 165 struct socket; 166 struct flowi; 167 struct dst_entry; 168 struct xfrm_selector; 169 struct xfrm_policy; 170 struct xfrm_state; 171 struct xfrm_user_sec_ctx; 172 struct seq_file; 173 struct sctp_endpoint; 174 175 #ifdef CONFIG_MMU 176 extern unsigned long mmap_min_addr; 177 extern unsigned long dac_mmap_min_addr; 178 #else 179 #define mmap_min_addr 0UL 180 #define dac_mmap_min_addr 0UL 181 #endif 182 183 /* 184 * Values used in the task_security_ops calls 185 */ 186 /* setuid or setgid, id0 == uid or gid */ 187 #define LSM_SETID_ID 1 188 189 /* setreuid or setregid, id0 == real, id1 == eff */ 190 #define LSM_SETID_RE 2 191 192 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 193 #define LSM_SETID_RES 4 194 195 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 196 #define LSM_SETID_FS 8 197 198 /* Flags for security_task_prlimit(). */ 199 #define LSM_PRLIMIT_READ 1 200 #define LSM_PRLIMIT_WRITE 2 201 202 /* forward declares to avoid warnings */ 203 struct sched_param; 204 struct request_sock; 205 206 /* bprm->unsafe reasons */ 207 #define LSM_UNSAFE_SHARE 1 208 #define LSM_UNSAFE_PTRACE 2 209 #define LSM_UNSAFE_NO_NEW_PRIVS 4 210 211 #ifdef CONFIG_MMU 212 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 213 void __user *buffer, size_t *lenp, loff_t *ppos); 214 #endif 215 216 /* security_inode_init_security callback function to write xattrs */ 217 typedef int (*initxattrs) (struct inode *inode, 218 const struct xattr *xattr_array, void *fs_data); 219 220 221 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 222 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 223 #define __data_id_stringify(dummy, str) #str, 224 225 enum kernel_load_data_id { 226 __kernel_read_file_id(__data_id_enumify) 227 }; 228 229 static const char * const kernel_load_data_str[] = { 230 __kernel_read_file_id(__data_id_stringify) 231 }; 232 233 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 234 { 235 if ((unsigned)id >= LOADING_MAX_ID) 236 return kernel_load_data_str[LOADING_UNKNOWN]; 237 238 return kernel_load_data_str[id]; 239 } 240 241 #ifdef CONFIG_SECURITY 242 243 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 244 int register_blocking_lsm_notifier(struct notifier_block *nb); 245 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 246 247 /* prototypes */ 248 extern int security_init(void); 249 extern int early_security_init(void); 250 251 /* Security operations */ 252 int security_binder_set_context_mgr(struct task_struct *mgr); 253 int security_binder_transaction(struct task_struct *from, 254 struct task_struct *to); 255 int security_binder_transfer_binder(struct task_struct *from, 256 struct task_struct *to); 257 int security_binder_transfer_file(struct task_struct *from, 258 struct task_struct *to, struct file *file); 259 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 260 int security_ptrace_traceme(struct task_struct *parent); 261 int security_capget(struct task_struct *target, 262 kernel_cap_t *effective, 263 kernel_cap_t *inheritable, 264 kernel_cap_t *permitted); 265 int security_capset(struct cred *new, const struct cred *old, 266 const kernel_cap_t *effective, 267 const kernel_cap_t *inheritable, 268 const kernel_cap_t *permitted); 269 int security_capable(const struct cred *cred, 270 struct user_namespace *ns, 271 int cap, 272 unsigned int opts); 273 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 274 int security_quota_on(struct dentry *dentry); 275 int security_syslog(int type); 276 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 277 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 278 int security_bprm_set_creds(struct linux_binprm *bprm); 279 int security_bprm_check(struct linux_binprm *bprm); 280 void security_bprm_committing_creds(struct linux_binprm *bprm); 281 void security_bprm_committed_creds(struct linux_binprm *bprm); 282 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 283 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 284 int security_sb_alloc(struct super_block *sb); 285 void security_sb_free(struct super_block *sb); 286 void security_free_mnt_opts(void **mnt_opts); 287 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 288 int security_sb_remount(struct super_block *sb, void *mnt_opts); 289 int security_sb_kern_mount(struct super_block *sb); 290 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 291 int security_sb_statfs(struct dentry *dentry); 292 int security_sb_mount(const char *dev_name, const struct path *path, 293 const char *type, unsigned long flags, void *data); 294 int security_sb_umount(struct vfsmount *mnt, int flags); 295 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 296 int security_sb_set_mnt_opts(struct super_block *sb, 297 void *mnt_opts, 298 unsigned long kern_flags, 299 unsigned long *set_kern_flags); 300 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 301 struct super_block *newsb, 302 unsigned long kern_flags, 303 unsigned long *set_kern_flags); 304 int security_add_mnt_opt(const char *option, const char *val, 305 int len, void **mnt_opts); 306 int security_move_mount(const struct path *from_path, const struct path *to_path); 307 int security_dentry_init_security(struct dentry *dentry, int mode, 308 const struct qstr *name, void **ctx, 309 u32 *ctxlen); 310 int security_dentry_create_files_as(struct dentry *dentry, int mode, 311 struct qstr *name, 312 const struct cred *old, 313 struct cred *new); 314 int security_path_notify(const struct path *path, u64 mask, 315 unsigned int obj_type); 316 int security_inode_alloc(struct inode *inode); 317 void security_inode_free(struct inode *inode); 318 int security_inode_init_security(struct inode *inode, struct inode *dir, 319 const struct qstr *qstr, 320 initxattrs initxattrs, void *fs_data); 321 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 322 const struct qstr *qstr, const char **name, 323 void **value, size_t *len); 324 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 325 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 326 struct dentry *new_dentry); 327 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 328 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 329 const char *old_name); 330 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 331 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 332 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 333 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 334 struct inode *new_dir, struct dentry *new_dentry, 335 unsigned int flags); 336 int security_inode_readlink(struct dentry *dentry); 337 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 338 bool rcu); 339 int security_inode_permission(struct inode *inode, int mask); 340 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 341 int security_inode_getattr(const struct path *path); 342 int security_inode_setxattr(struct dentry *dentry, const char *name, 343 const void *value, size_t size, int flags); 344 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 345 const void *value, size_t size, int flags); 346 int security_inode_getxattr(struct dentry *dentry, const char *name); 347 int security_inode_listxattr(struct dentry *dentry); 348 int security_inode_removexattr(struct dentry *dentry, const char *name); 349 int security_inode_need_killpriv(struct dentry *dentry); 350 int security_inode_killpriv(struct dentry *dentry); 351 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 352 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 353 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 354 void security_inode_getsecid(struct inode *inode, u32 *secid); 355 int security_inode_copy_up(struct dentry *src, struct cred **new); 356 int security_inode_copy_up_xattr(const char *name); 357 int security_kernfs_init_security(struct kernfs_node *kn_dir, 358 struct kernfs_node *kn); 359 int security_file_permission(struct file *file, int mask); 360 int security_file_alloc(struct file *file); 361 void security_file_free(struct file *file); 362 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 363 int security_mmap_file(struct file *file, unsigned long prot, 364 unsigned long flags); 365 int security_mmap_addr(unsigned long addr); 366 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 367 unsigned long prot); 368 int security_file_lock(struct file *file, unsigned int cmd); 369 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 370 void security_file_set_fowner(struct file *file); 371 int security_file_send_sigiotask(struct task_struct *tsk, 372 struct fown_struct *fown, int sig); 373 int security_file_receive(struct file *file); 374 int security_file_open(struct file *file); 375 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 376 void security_task_free(struct task_struct *task); 377 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 378 void security_cred_free(struct cred *cred); 379 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 380 void security_transfer_creds(struct cred *new, const struct cred *old); 381 void security_cred_getsecid(const struct cred *c, u32 *secid); 382 int security_kernel_act_as(struct cred *new, u32 secid); 383 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 384 int security_kernel_module_request(char *kmod_name); 385 int security_kernel_load_data(enum kernel_load_data_id id); 386 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 387 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 388 enum kernel_read_file_id id); 389 int security_task_fix_setuid(struct cred *new, const struct cred *old, 390 int flags); 391 int security_task_setpgid(struct task_struct *p, pid_t pgid); 392 int security_task_getpgid(struct task_struct *p); 393 int security_task_getsid(struct task_struct *p); 394 void security_task_getsecid(struct task_struct *p, u32 *secid); 395 int security_task_setnice(struct task_struct *p, int nice); 396 int security_task_setioprio(struct task_struct *p, int ioprio); 397 int security_task_getioprio(struct task_struct *p); 398 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 399 unsigned int flags); 400 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 401 struct rlimit *new_rlim); 402 int security_task_setscheduler(struct task_struct *p); 403 int security_task_getscheduler(struct task_struct *p); 404 int security_task_movememory(struct task_struct *p); 405 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 406 int sig, const struct cred *cred); 407 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 408 unsigned long arg4, unsigned long arg5); 409 void security_task_to_inode(struct task_struct *p, struct inode *inode); 410 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 411 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 412 int security_msg_msg_alloc(struct msg_msg *msg); 413 void security_msg_msg_free(struct msg_msg *msg); 414 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 415 void security_msg_queue_free(struct kern_ipc_perm *msq); 416 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 417 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 418 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 419 struct msg_msg *msg, int msqflg); 420 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 421 struct task_struct *target, long type, int mode); 422 int security_shm_alloc(struct kern_ipc_perm *shp); 423 void security_shm_free(struct kern_ipc_perm *shp); 424 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 425 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 426 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 427 int security_sem_alloc(struct kern_ipc_perm *sma); 428 void security_sem_free(struct kern_ipc_perm *sma); 429 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 430 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 431 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 432 unsigned nsops, int alter); 433 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 434 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 435 char **value); 436 int security_setprocattr(const char *lsm, const char *name, void *value, 437 size_t size); 438 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 439 int security_ismaclabel(const char *name); 440 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 441 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 442 void security_release_secctx(char *secdata, u32 seclen); 443 void security_inode_invalidate_secctx(struct inode *inode); 444 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 445 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 446 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 447 int security_locked_down(enum lockdown_reason what); 448 #else /* CONFIG_SECURITY */ 449 450 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 451 { 452 return 0; 453 } 454 455 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 456 { 457 return 0; 458 } 459 460 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 461 { 462 return 0; 463 } 464 465 static inline void security_free_mnt_opts(void **mnt_opts) 466 { 467 } 468 469 /* 470 * This is the default capabilities functionality. Most of these functions 471 * are just stubbed out, but a few must call the proper capable code. 472 */ 473 474 static inline int security_init(void) 475 { 476 return 0; 477 } 478 479 static inline int early_security_init(void) 480 { 481 return 0; 482 } 483 484 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 485 { 486 return 0; 487 } 488 489 static inline int security_binder_transaction(struct task_struct *from, 490 struct task_struct *to) 491 { 492 return 0; 493 } 494 495 static inline int security_binder_transfer_binder(struct task_struct *from, 496 struct task_struct *to) 497 { 498 return 0; 499 } 500 501 static inline int security_binder_transfer_file(struct task_struct *from, 502 struct task_struct *to, 503 struct file *file) 504 { 505 return 0; 506 } 507 508 static inline int security_ptrace_access_check(struct task_struct *child, 509 unsigned int mode) 510 { 511 return cap_ptrace_access_check(child, mode); 512 } 513 514 static inline int security_ptrace_traceme(struct task_struct *parent) 515 { 516 return cap_ptrace_traceme(parent); 517 } 518 519 static inline int security_capget(struct task_struct *target, 520 kernel_cap_t *effective, 521 kernel_cap_t *inheritable, 522 kernel_cap_t *permitted) 523 { 524 return cap_capget(target, effective, inheritable, permitted); 525 } 526 527 static inline int security_capset(struct cred *new, 528 const struct cred *old, 529 const kernel_cap_t *effective, 530 const kernel_cap_t *inheritable, 531 const kernel_cap_t *permitted) 532 { 533 return cap_capset(new, old, effective, inheritable, permitted); 534 } 535 536 static inline int security_capable(const struct cred *cred, 537 struct user_namespace *ns, 538 int cap, 539 unsigned int opts) 540 { 541 return cap_capable(cred, ns, cap, opts); 542 } 543 544 static inline int security_quotactl(int cmds, int type, int id, 545 struct super_block *sb) 546 { 547 return 0; 548 } 549 550 static inline int security_quota_on(struct dentry *dentry) 551 { 552 return 0; 553 } 554 555 static inline int security_syslog(int type) 556 { 557 return 0; 558 } 559 560 static inline int security_settime64(const struct timespec64 *ts, 561 const struct timezone *tz) 562 { 563 return cap_settime(ts, tz); 564 } 565 566 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 567 { 568 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 569 } 570 571 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 572 { 573 return cap_bprm_set_creds(bprm); 574 } 575 576 static inline int security_bprm_check(struct linux_binprm *bprm) 577 { 578 return 0; 579 } 580 581 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 582 { 583 } 584 585 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 586 { 587 } 588 589 static inline int security_fs_context_dup(struct fs_context *fc, 590 struct fs_context *src_fc) 591 { 592 return 0; 593 } 594 static inline int security_fs_context_parse_param(struct fs_context *fc, 595 struct fs_parameter *param) 596 { 597 return -ENOPARAM; 598 } 599 600 static inline int security_sb_alloc(struct super_block *sb) 601 { 602 return 0; 603 } 604 605 static inline void security_sb_free(struct super_block *sb) 606 { } 607 608 static inline int security_sb_eat_lsm_opts(char *options, 609 void **mnt_opts) 610 { 611 return 0; 612 } 613 614 static inline int security_sb_remount(struct super_block *sb, 615 void *mnt_opts) 616 { 617 return 0; 618 } 619 620 static inline int security_sb_kern_mount(struct super_block *sb) 621 { 622 return 0; 623 } 624 625 static inline int security_sb_show_options(struct seq_file *m, 626 struct super_block *sb) 627 { 628 return 0; 629 } 630 631 static inline int security_sb_statfs(struct dentry *dentry) 632 { 633 return 0; 634 } 635 636 static inline int security_sb_mount(const char *dev_name, const struct path *path, 637 const char *type, unsigned long flags, 638 void *data) 639 { 640 return 0; 641 } 642 643 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 644 { 645 return 0; 646 } 647 648 static inline int security_sb_pivotroot(const struct path *old_path, 649 const struct path *new_path) 650 { 651 return 0; 652 } 653 654 static inline int security_sb_set_mnt_opts(struct super_block *sb, 655 void *mnt_opts, 656 unsigned long kern_flags, 657 unsigned long *set_kern_flags) 658 { 659 return 0; 660 } 661 662 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 663 struct super_block *newsb, 664 unsigned long kern_flags, 665 unsigned long *set_kern_flags) 666 { 667 return 0; 668 } 669 670 static inline int security_add_mnt_opt(const char *option, const char *val, 671 int len, void **mnt_opts) 672 { 673 return 0; 674 } 675 676 static inline int security_move_mount(const struct path *from_path, 677 const struct path *to_path) 678 { 679 return 0; 680 } 681 682 static inline int security_path_notify(const struct path *path, u64 mask, 683 unsigned int obj_type) 684 { 685 return 0; 686 } 687 688 static inline int security_inode_alloc(struct inode *inode) 689 { 690 return 0; 691 } 692 693 static inline void security_inode_free(struct inode *inode) 694 { } 695 696 static inline int security_dentry_init_security(struct dentry *dentry, 697 int mode, 698 const struct qstr *name, 699 void **ctx, 700 u32 *ctxlen) 701 { 702 return -EOPNOTSUPP; 703 } 704 705 static inline int security_dentry_create_files_as(struct dentry *dentry, 706 int mode, struct qstr *name, 707 const struct cred *old, 708 struct cred *new) 709 { 710 return 0; 711 } 712 713 714 static inline int security_inode_init_security(struct inode *inode, 715 struct inode *dir, 716 const struct qstr *qstr, 717 const initxattrs xattrs, 718 void *fs_data) 719 { 720 return 0; 721 } 722 723 static inline int security_old_inode_init_security(struct inode *inode, 724 struct inode *dir, 725 const struct qstr *qstr, 726 const char **name, 727 void **value, size_t *len) 728 { 729 return -EOPNOTSUPP; 730 } 731 732 static inline int security_inode_create(struct inode *dir, 733 struct dentry *dentry, 734 umode_t mode) 735 { 736 return 0; 737 } 738 739 static inline int security_inode_link(struct dentry *old_dentry, 740 struct inode *dir, 741 struct dentry *new_dentry) 742 { 743 return 0; 744 } 745 746 static inline int security_inode_unlink(struct inode *dir, 747 struct dentry *dentry) 748 { 749 return 0; 750 } 751 752 static inline int security_inode_symlink(struct inode *dir, 753 struct dentry *dentry, 754 const char *old_name) 755 { 756 return 0; 757 } 758 759 static inline int security_inode_mkdir(struct inode *dir, 760 struct dentry *dentry, 761 int mode) 762 { 763 return 0; 764 } 765 766 static inline int security_inode_rmdir(struct inode *dir, 767 struct dentry *dentry) 768 { 769 return 0; 770 } 771 772 static inline int security_inode_mknod(struct inode *dir, 773 struct dentry *dentry, 774 int mode, dev_t dev) 775 { 776 return 0; 777 } 778 779 static inline int security_inode_rename(struct inode *old_dir, 780 struct dentry *old_dentry, 781 struct inode *new_dir, 782 struct dentry *new_dentry, 783 unsigned int flags) 784 { 785 return 0; 786 } 787 788 static inline int security_inode_readlink(struct dentry *dentry) 789 { 790 return 0; 791 } 792 793 static inline int security_inode_follow_link(struct dentry *dentry, 794 struct inode *inode, 795 bool rcu) 796 { 797 return 0; 798 } 799 800 static inline int security_inode_permission(struct inode *inode, int mask) 801 { 802 return 0; 803 } 804 805 static inline int security_inode_setattr(struct dentry *dentry, 806 struct iattr *attr) 807 { 808 return 0; 809 } 810 811 static inline int security_inode_getattr(const struct path *path) 812 { 813 return 0; 814 } 815 816 static inline int security_inode_setxattr(struct dentry *dentry, 817 const char *name, const void *value, size_t size, int flags) 818 { 819 return cap_inode_setxattr(dentry, name, value, size, flags); 820 } 821 822 static inline void security_inode_post_setxattr(struct dentry *dentry, 823 const char *name, const void *value, size_t size, int flags) 824 { } 825 826 static inline int security_inode_getxattr(struct dentry *dentry, 827 const char *name) 828 { 829 return 0; 830 } 831 832 static inline int security_inode_listxattr(struct dentry *dentry) 833 { 834 return 0; 835 } 836 837 static inline int security_inode_removexattr(struct dentry *dentry, 838 const char *name) 839 { 840 return cap_inode_removexattr(dentry, name); 841 } 842 843 static inline int security_inode_need_killpriv(struct dentry *dentry) 844 { 845 return cap_inode_need_killpriv(dentry); 846 } 847 848 static inline int security_inode_killpriv(struct dentry *dentry) 849 { 850 return cap_inode_killpriv(dentry); 851 } 852 853 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 854 { 855 return -EOPNOTSUPP; 856 } 857 858 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 859 { 860 return -EOPNOTSUPP; 861 } 862 863 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 864 { 865 return 0; 866 } 867 868 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 869 { 870 *secid = 0; 871 } 872 873 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 874 { 875 return 0; 876 } 877 878 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 879 struct kernfs_node *kn) 880 { 881 return 0; 882 } 883 884 static inline int security_inode_copy_up_xattr(const char *name) 885 { 886 return -EOPNOTSUPP; 887 } 888 889 static inline int security_file_permission(struct file *file, int mask) 890 { 891 return 0; 892 } 893 894 static inline int security_file_alloc(struct file *file) 895 { 896 return 0; 897 } 898 899 static inline void security_file_free(struct file *file) 900 { } 901 902 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 903 unsigned long arg) 904 { 905 return 0; 906 } 907 908 static inline int security_mmap_file(struct file *file, unsigned long prot, 909 unsigned long flags) 910 { 911 return 0; 912 } 913 914 static inline int security_mmap_addr(unsigned long addr) 915 { 916 return cap_mmap_addr(addr); 917 } 918 919 static inline int security_file_mprotect(struct vm_area_struct *vma, 920 unsigned long reqprot, 921 unsigned long prot) 922 { 923 return 0; 924 } 925 926 static inline int security_file_lock(struct file *file, unsigned int cmd) 927 { 928 return 0; 929 } 930 931 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 932 unsigned long arg) 933 { 934 return 0; 935 } 936 937 static inline void security_file_set_fowner(struct file *file) 938 { 939 return; 940 } 941 942 static inline int security_file_send_sigiotask(struct task_struct *tsk, 943 struct fown_struct *fown, 944 int sig) 945 { 946 return 0; 947 } 948 949 static inline int security_file_receive(struct file *file) 950 { 951 return 0; 952 } 953 954 static inline int security_file_open(struct file *file) 955 { 956 return 0; 957 } 958 959 static inline int security_task_alloc(struct task_struct *task, 960 unsigned long clone_flags) 961 { 962 return 0; 963 } 964 965 static inline void security_task_free(struct task_struct *task) 966 { } 967 968 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 969 { 970 return 0; 971 } 972 973 static inline void security_cred_free(struct cred *cred) 974 { } 975 976 static inline int security_prepare_creds(struct cred *new, 977 const struct cred *old, 978 gfp_t gfp) 979 { 980 return 0; 981 } 982 983 static inline void security_transfer_creds(struct cred *new, 984 const struct cred *old) 985 { 986 } 987 988 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 989 { 990 return 0; 991 } 992 993 static inline int security_kernel_create_files_as(struct cred *cred, 994 struct inode *inode) 995 { 996 return 0; 997 } 998 999 static inline int security_kernel_module_request(char *kmod_name) 1000 { 1001 return 0; 1002 } 1003 1004 static inline int security_kernel_load_data(enum kernel_load_data_id id) 1005 { 1006 return 0; 1007 } 1008 1009 static inline int security_kernel_read_file(struct file *file, 1010 enum kernel_read_file_id id) 1011 { 1012 return 0; 1013 } 1014 1015 static inline int security_kernel_post_read_file(struct file *file, 1016 char *buf, loff_t size, 1017 enum kernel_read_file_id id) 1018 { 1019 return 0; 1020 } 1021 1022 static inline int security_task_fix_setuid(struct cred *new, 1023 const struct cred *old, 1024 int flags) 1025 { 1026 return cap_task_fix_setuid(new, old, flags); 1027 } 1028 1029 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1030 { 1031 return 0; 1032 } 1033 1034 static inline int security_task_getpgid(struct task_struct *p) 1035 { 1036 return 0; 1037 } 1038 1039 static inline int security_task_getsid(struct task_struct *p) 1040 { 1041 return 0; 1042 } 1043 1044 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1045 { 1046 *secid = 0; 1047 } 1048 1049 static inline int security_task_setnice(struct task_struct *p, int nice) 1050 { 1051 return cap_task_setnice(p, nice); 1052 } 1053 1054 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1055 { 1056 return cap_task_setioprio(p, ioprio); 1057 } 1058 1059 static inline int security_task_getioprio(struct task_struct *p) 1060 { 1061 return 0; 1062 } 1063 1064 static inline int security_task_prlimit(const struct cred *cred, 1065 const struct cred *tcred, 1066 unsigned int flags) 1067 { 1068 return 0; 1069 } 1070 1071 static inline int security_task_setrlimit(struct task_struct *p, 1072 unsigned int resource, 1073 struct rlimit *new_rlim) 1074 { 1075 return 0; 1076 } 1077 1078 static inline int security_task_setscheduler(struct task_struct *p) 1079 { 1080 return cap_task_setscheduler(p); 1081 } 1082 1083 static inline int security_task_getscheduler(struct task_struct *p) 1084 { 1085 return 0; 1086 } 1087 1088 static inline int security_task_movememory(struct task_struct *p) 1089 { 1090 return 0; 1091 } 1092 1093 static inline int security_task_kill(struct task_struct *p, 1094 struct kernel_siginfo *info, int sig, 1095 const struct cred *cred) 1096 { 1097 return 0; 1098 } 1099 1100 static inline int security_task_prctl(int option, unsigned long arg2, 1101 unsigned long arg3, 1102 unsigned long arg4, 1103 unsigned long arg5) 1104 { 1105 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1106 } 1107 1108 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1109 { } 1110 1111 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1112 short flag) 1113 { 1114 return 0; 1115 } 1116 1117 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1118 { 1119 *secid = 0; 1120 } 1121 1122 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1123 { 1124 return 0; 1125 } 1126 1127 static inline void security_msg_msg_free(struct msg_msg *msg) 1128 { } 1129 1130 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1131 { 1132 return 0; 1133 } 1134 1135 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1136 { } 1137 1138 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1139 int msqflg) 1140 { 1141 return 0; 1142 } 1143 1144 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1145 { 1146 return 0; 1147 } 1148 1149 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1150 struct msg_msg *msg, int msqflg) 1151 { 1152 return 0; 1153 } 1154 1155 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1156 struct msg_msg *msg, 1157 struct task_struct *target, 1158 long type, int mode) 1159 { 1160 return 0; 1161 } 1162 1163 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1164 { 1165 return 0; 1166 } 1167 1168 static inline void security_shm_free(struct kern_ipc_perm *shp) 1169 { } 1170 1171 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1172 int shmflg) 1173 { 1174 return 0; 1175 } 1176 1177 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1178 { 1179 return 0; 1180 } 1181 1182 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1183 char __user *shmaddr, int shmflg) 1184 { 1185 return 0; 1186 } 1187 1188 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1189 { 1190 return 0; 1191 } 1192 1193 static inline void security_sem_free(struct kern_ipc_perm *sma) 1194 { } 1195 1196 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1197 { 1198 return 0; 1199 } 1200 1201 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1202 { 1203 return 0; 1204 } 1205 1206 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1207 struct sembuf *sops, unsigned nsops, 1208 int alter) 1209 { 1210 return 0; 1211 } 1212 1213 static inline void security_d_instantiate(struct dentry *dentry, 1214 struct inode *inode) 1215 { } 1216 1217 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1218 char *name, char **value) 1219 { 1220 return -EINVAL; 1221 } 1222 1223 static inline int security_setprocattr(const char *lsm, char *name, 1224 void *value, size_t size) 1225 { 1226 return -EINVAL; 1227 } 1228 1229 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1230 { 1231 return 0; 1232 } 1233 1234 static inline int security_ismaclabel(const char *name) 1235 { 1236 return 0; 1237 } 1238 1239 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1240 { 1241 return -EOPNOTSUPP; 1242 } 1243 1244 static inline int security_secctx_to_secid(const char *secdata, 1245 u32 seclen, 1246 u32 *secid) 1247 { 1248 return -EOPNOTSUPP; 1249 } 1250 1251 static inline void security_release_secctx(char *secdata, u32 seclen) 1252 { 1253 } 1254 1255 static inline void security_inode_invalidate_secctx(struct inode *inode) 1256 { 1257 } 1258 1259 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1260 { 1261 return -EOPNOTSUPP; 1262 } 1263 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1264 { 1265 return -EOPNOTSUPP; 1266 } 1267 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1268 { 1269 return -EOPNOTSUPP; 1270 } 1271 static inline int security_locked_down(enum lockdown_reason what) 1272 { 1273 return 0; 1274 } 1275 #endif /* CONFIG_SECURITY */ 1276 1277 #ifdef CONFIG_SECURITY_NETWORK 1278 1279 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1280 int security_unix_may_send(struct socket *sock, struct socket *other); 1281 int security_socket_create(int family, int type, int protocol, int kern); 1282 int security_socket_post_create(struct socket *sock, int family, 1283 int type, int protocol, int kern); 1284 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1285 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1286 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1287 int security_socket_listen(struct socket *sock, int backlog); 1288 int security_socket_accept(struct socket *sock, struct socket *newsock); 1289 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1290 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1291 int size, int flags); 1292 int security_socket_getsockname(struct socket *sock); 1293 int security_socket_getpeername(struct socket *sock); 1294 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1295 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1296 int security_socket_shutdown(struct socket *sock, int how); 1297 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1298 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1299 int __user *optlen, unsigned len); 1300 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1301 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1302 void security_sk_free(struct sock *sk); 1303 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1304 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1305 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1306 void security_sock_graft(struct sock*sk, struct socket *parent); 1307 int security_inet_conn_request(struct sock *sk, 1308 struct sk_buff *skb, struct request_sock *req); 1309 void security_inet_csk_clone(struct sock *newsk, 1310 const struct request_sock *req); 1311 void security_inet_conn_established(struct sock *sk, 1312 struct sk_buff *skb); 1313 int security_secmark_relabel_packet(u32 secid); 1314 void security_secmark_refcount_inc(void); 1315 void security_secmark_refcount_dec(void); 1316 int security_tun_dev_alloc_security(void **security); 1317 void security_tun_dev_free_security(void *security); 1318 int security_tun_dev_create(void); 1319 int security_tun_dev_attach_queue(void *security); 1320 int security_tun_dev_attach(struct sock *sk, void *security); 1321 int security_tun_dev_open(void *security); 1322 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1323 int security_sctp_bind_connect(struct sock *sk, int optname, 1324 struct sockaddr *address, int addrlen); 1325 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1326 struct sock *newsk); 1327 1328 #else /* CONFIG_SECURITY_NETWORK */ 1329 static inline int security_unix_stream_connect(struct sock *sock, 1330 struct sock *other, 1331 struct sock *newsk) 1332 { 1333 return 0; 1334 } 1335 1336 static inline int security_unix_may_send(struct socket *sock, 1337 struct socket *other) 1338 { 1339 return 0; 1340 } 1341 1342 static inline int security_socket_create(int family, int type, 1343 int protocol, int kern) 1344 { 1345 return 0; 1346 } 1347 1348 static inline int security_socket_post_create(struct socket *sock, 1349 int family, 1350 int type, 1351 int protocol, int kern) 1352 { 1353 return 0; 1354 } 1355 1356 static inline int security_socket_socketpair(struct socket *socka, 1357 struct socket *sockb) 1358 { 1359 return 0; 1360 } 1361 1362 static inline int security_socket_bind(struct socket *sock, 1363 struct sockaddr *address, 1364 int addrlen) 1365 { 1366 return 0; 1367 } 1368 1369 static inline int security_socket_connect(struct socket *sock, 1370 struct sockaddr *address, 1371 int addrlen) 1372 { 1373 return 0; 1374 } 1375 1376 static inline int security_socket_listen(struct socket *sock, int backlog) 1377 { 1378 return 0; 1379 } 1380 1381 static inline int security_socket_accept(struct socket *sock, 1382 struct socket *newsock) 1383 { 1384 return 0; 1385 } 1386 1387 static inline int security_socket_sendmsg(struct socket *sock, 1388 struct msghdr *msg, int size) 1389 { 1390 return 0; 1391 } 1392 1393 static inline int security_socket_recvmsg(struct socket *sock, 1394 struct msghdr *msg, int size, 1395 int flags) 1396 { 1397 return 0; 1398 } 1399 1400 static inline int security_socket_getsockname(struct socket *sock) 1401 { 1402 return 0; 1403 } 1404 1405 static inline int security_socket_getpeername(struct socket *sock) 1406 { 1407 return 0; 1408 } 1409 1410 static inline int security_socket_getsockopt(struct socket *sock, 1411 int level, int optname) 1412 { 1413 return 0; 1414 } 1415 1416 static inline int security_socket_setsockopt(struct socket *sock, 1417 int level, int optname) 1418 { 1419 return 0; 1420 } 1421 1422 static inline int security_socket_shutdown(struct socket *sock, int how) 1423 { 1424 return 0; 1425 } 1426 static inline int security_sock_rcv_skb(struct sock *sk, 1427 struct sk_buff *skb) 1428 { 1429 return 0; 1430 } 1431 1432 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1433 int __user *optlen, unsigned len) 1434 { 1435 return -ENOPROTOOPT; 1436 } 1437 1438 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1439 { 1440 return -ENOPROTOOPT; 1441 } 1442 1443 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1444 { 1445 return 0; 1446 } 1447 1448 static inline void security_sk_free(struct sock *sk) 1449 { 1450 } 1451 1452 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1453 { 1454 } 1455 1456 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1457 { 1458 } 1459 1460 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1461 { 1462 } 1463 1464 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1465 { 1466 } 1467 1468 static inline int security_inet_conn_request(struct sock *sk, 1469 struct sk_buff *skb, struct request_sock *req) 1470 { 1471 return 0; 1472 } 1473 1474 static inline void security_inet_csk_clone(struct sock *newsk, 1475 const struct request_sock *req) 1476 { 1477 } 1478 1479 static inline void security_inet_conn_established(struct sock *sk, 1480 struct sk_buff *skb) 1481 { 1482 } 1483 1484 static inline int security_secmark_relabel_packet(u32 secid) 1485 { 1486 return 0; 1487 } 1488 1489 static inline void security_secmark_refcount_inc(void) 1490 { 1491 } 1492 1493 static inline void security_secmark_refcount_dec(void) 1494 { 1495 } 1496 1497 static inline int security_tun_dev_alloc_security(void **security) 1498 { 1499 return 0; 1500 } 1501 1502 static inline void security_tun_dev_free_security(void *security) 1503 { 1504 } 1505 1506 static inline int security_tun_dev_create(void) 1507 { 1508 return 0; 1509 } 1510 1511 static inline int security_tun_dev_attach_queue(void *security) 1512 { 1513 return 0; 1514 } 1515 1516 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1517 { 1518 return 0; 1519 } 1520 1521 static inline int security_tun_dev_open(void *security) 1522 { 1523 return 0; 1524 } 1525 1526 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1527 struct sk_buff *skb) 1528 { 1529 return 0; 1530 } 1531 1532 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1533 struct sockaddr *address, 1534 int addrlen) 1535 { 1536 return 0; 1537 } 1538 1539 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1540 struct sock *sk, 1541 struct sock *newsk) 1542 { 1543 } 1544 #endif /* CONFIG_SECURITY_NETWORK */ 1545 1546 #ifdef CONFIG_SECURITY_INFINIBAND 1547 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1548 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1549 int security_ib_alloc_security(void **sec); 1550 void security_ib_free_security(void *sec); 1551 #else /* CONFIG_SECURITY_INFINIBAND */ 1552 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1553 { 1554 return 0; 1555 } 1556 1557 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1558 { 1559 return 0; 1560 } 1561 1562 static inline int security_ib_alloc_security(void **sec) 1563 { 1564 return 0; 1565 } 1566 1567 static inline void security_ib_free_security(void *sec) 1568 { 1569 } 1570 #endif /* CONFIG_SECURITY_INFINIBAND */ 1571 1572 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1573 1574 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1575 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1576 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1577 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1578 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1579 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1580 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1581 struct xfrm_sec_ctx *polsec, u32 secid); 1582 int security_xfrm_state_delete(struct xfrm_state *x); 1583 void security_xfrm_state_free(struct xfrm_state *x); 1584 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1585 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1586 struct xfrm_policy *xp, 1587 const struct flowi *fl); 1588 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1589 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1590 1591 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1592 1593 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1594 struct xfrm_user_sec_ctx *sec_ctx, 1595 gfp_t gfp) 1596 { 1597 return 0; 1598 } 1599 1600 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1601 { 1602 return 0; 1603 } 1604 1605 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1606 { 1607 } 1608 1609 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1610 { 1611 return 0; 1612 } 1613 1614 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1615 struct xfrm_user_sec_ctx *sec_ctx) 1616 { 1617 return 0; 1618 } 1619 1620 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1621 struct xfrm_sec_ctx *polsec, u32 secid) 1622 { 1623 return 0; 1624 } 1625 1626 static inline void security_xfrm_state_free(struct xfrm_state *x) 1627 { 1628 } 1629 1630 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1631 { 1632 return 0; 1633 } 1634 1635 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1636 { 1637 return 0; 1638 } 1639 1640 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1641 struct xfrm_policy *xp, const struct flowi *fl) 1642 { 1643 return 1; 1644 } 1645 1646 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1647 { 1648 return 0; 1649 } 1650 1651 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1652 { 1653 } 1654 1655 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1656 1657 #ifdef CONFIG_SECURITY_PATH 1658 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1659 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1660 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1661 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1662 unsigned int dev); 1663 int security_path_truncate(const struct path *path); 1664 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1665 const char *old_name); 1666 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1667 struct dentry *new_dentry); 1668 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1669 const struct path *new_dir, struct dentry *new_dentry, 1670 unsigned int flags); 1671 int security_path_chmod(const struct path *path, umode_t mode); 1672 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1673 int security_path_chroot(const struct path *path); 1674 #else /* CONFIG_SECURITY_PATH */ 1675 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1676 { 1677 return 0; 1678 } 1679 1680 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1681 umode_t mode) 1682 { 1683 return 0; 1684 } 1685 1686 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1687 { 1688 return 0; 1689 } 1690 1691 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1692 umode_t mode, unsigned int dev) 1693 { 1694 return 0; 1695 } 1696 1697 static inline int security_path_truncate(const struct path *path) 1698 { 1699 return 0; 1700 } 1701 1702 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1703 const char *old_name) 1704 { 1705 return 0; 1706 } 1707 1708 static inline int security_path_link(struct dentry *old_dentry, 1709 const struct path *new_dir, 1710 struct dentry *new_dentry) 1711 { 1712 return 0; 1713 } 1714 1715 static inline int security_path_rename(const struct path *old_dir, 1716 struct dentry *old_dentry, 1717 const struct path *new_dir, 1718 struct dentry *new_dentry, 1719 unsigned int flags) 1720 { 1721 return 0; 1722 } 1723 1724 static inline int security_path_chmod(const struct path *path, umode_t mode) 1725 { 1726 return 0; 1727 } 1728 1729 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1730 { 1731 return 0; 1732 } 1733 1734 static inline int security_path_chroot(const struct path *path) 1735 { 1736 return 0; 1737 } 1738 #endif /* CONFIG_SECURITY_PATH */ 1739 1740 #ifdef CONFIG_KEYS 1741 #ifdef CONFIG_SECURITY 1742 1743 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1744 void security_key_free(struct key *key); 1745 int security_key_permission(key_ref_t key_ref, 1746 const struct cred *cred, unsigned perm); 1747 int security_key_getsecurity(struct key *key, char **_buffer); 1748 1749 #else 1750 1751 static inline int security_key_alloc(struct key *key, 1752 const struct cred *cred, 1753 unsigned long flags) 1754 { 1755 return 0; 1756 } 1757 1758 static inline void security_key_free(struct key *key) 1759 { 1760 } 1761 1762 static inline int security_key_permission(key_ref_t key_ref, 1763 const struct cred *cred, 1764 unsigned perm) 1765 { 1766 return 0; 1767 } 1768 1769 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1770 { 1771 *_buffer = NULL; 1772 return 0; 1773 } 1774 1775 #endif 1776 #endif /* CONFIG_KEYS */ 1777 1778 #ifdef CONFIG_AUDIT 1779 #ifdef CONFIG_SECURITY 1780 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1781 int security_audit_rule_known(struct audit_krule *krule); 1782 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1783 void security_audit_rule_free(void *lsmrule); 1784 1785 #else 1786 1787 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1788 void **lsmrule) 1789 { 1790 return 0; 1791 } 1792 1793 static inline int security_audit_rule_known(struct audit_krule *krule) 1794 { 1795 return 0; 1796 } 1797 1798 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1799 void *lsmrule) 1800 { 1801 return 0; 1802 } 1803 1804 static inline void security_audit_rule_free(void *lsmrule) 1805 { } 1806 1807 #endif /* CONFIG_SECURITY */ 1808 #endif /* CONFIG_AUDIT */ 1809 1810 #ifdef CONFIG_SECURITYFS 1811 1812 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1813 struct dentry *parent, void *data, 1814 const struct file_operations *fops); 1815 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1816 struct dentry *securityfs_create_symlink(const char *name, 1817 struct dentry *parent, 1818 const char *target, 1819 const struct inode_operations *iops); 1820 extern void securityfs_remove(struct dentry *dentry); 1821 1822 #else /* CONFIG_SECURITYFS */ 1823 1824 static inline struct dentry *securityfs_create_dir(const char *name, 1825 struct dentry *parent) 1826 { 1827 return ERR_PTR(-ENODEV); 1828 } 1829 1830 static inline struct dentry *securityfs_create_file(const char *name, 1831 umode_t mode, 1832 struct dentry *parent, 1833 void *data, 1834 const struct file_operations *fops) 1835 { 1836 return ERR_PTR(-ENODEV); 1837 } 1838 1839 static inline struct dentry *securityfs_create_symlink(const char *name, 1840 struct dentry *parent, 1841 const char *target, 1842 const struct inode_operations *iops) 1843 { 1844 return ERR_PTR(-ENODEV); 1845 } 1846 1847 static inline void securityfs_remove(struct dentry *dentry) 1848 {} 1849 1850 #endif 1851 1852 #ifdef CONFIG_BPF_SYSCALL 1853 union bpf_attr; 1854 struct bpf_map; 1855 struct bpf_prog; 1856 struct bpf_prog_aux; 1857 #ifdef CONFIG_SECURITY 1858 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1859 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1860 extern int security_bpf_prog(struct bpf_prog *prog); 1861 extern int security_bpf_map_alloc(struct bpf_map *map); 1862 extern void security_bpf_map_free(struct bpf_map *map); 1863 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1864 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1865 #else 1866 static inline int security_bpf(int cmd, union bpf_attr *attr, 1867 unsigned int size) 1868 { 1869 return 0; 1870 } 1871 1872 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1873 { 1874 return 0; 1875 } 1876 1877 static inline int security_bpf_prog(struct bpf_prog *prog) 1878 { 1879 return 0; 1880 } 1881 1882 static inline int security_bpf_map_alloc(struct bpf_map *map) 1883 { 1884 return 0; 1885 } 1886 1887 static inline void security_bpf_map_free(struct bpf_map *map) 1888 { } 1889 1890 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1891 { 1892 return 0; 1893 } 1894 1895 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1896 { } 1897 #endif /* CONFIG_SECURITY */ 1898 #endif /* CONFIG_BPF_SYSCALL */ 1899 1900 #ifdef CONFIG_PERF_EVENTS 1901 struct perf_event_attr; 1902 struct perf_event; 1903 1904 #ifdef CONFIG_SECURITY 1905 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 1906 extern int security_perf_event_alloc(struct perf_event *event); 1907 extern void security_perf_event_free(struct perf_event *event); 1908 extern int security_perf_event_read(struct perf_event *event); 1909 extern int security_perf_event_write(struct perf_event *event); 1910 #else 1911 static inline int security_perf_event_open(struct perf_event_attr *attr, 1912 int type) 1913 { 1914 return 0; 1915 } 1916 1917 static inline int security_perf_event_alloc(struct perf_event *event) 1918 { 1919 return 0; 1920 } 1921 1922 static inline void security_perf_event_free(struct perf_event *event) 1923 { 1924 } 1925 1926 static inline int security_perf_event_read(struct perf_event *event) 1927 { 1928 return 0; 1929 } 1930 1931 static inline int security_perf_event_write(struct perf_event *event) 1932 { 1933 return 0; 1934 } 1935 #endif /* CONFIG_SECURITY */ 1936 #endif /* CONFIG_PERF_EVENTS */ 1937 1938 #endif /* ! __LINUX_SECURITY_H */ 1939