1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/key.h> 27 #include <linux/capability.h> 28 #include <linux/fs.h> 29 #include <linux/slab.h> 30 #include <linux/err.h> 31 #include <linux/string.h> 32 #include <linux/mm.h> 33 #include <linux/fs.h> 34 35 struct linux_binprm; 36 struct cred; 37 struct rlimit; 38 struct kernel_siginfo; 39 struct sembuf; 40 struct kern_ipc_perm; 41 struct audit_context; 42 struct super_block; 43 struct inode; 44 struct dentry; 45 struct file; 46 struct vfsmount; 47 struct path; 48 struct qstr; 49 struct iattr; 50 struct fown_struct; 51 struct file_operations; 52 struct msg_msg; 53 struct xattr; 54 struct kernfs_node; 55 struct xfrm_sec_ctx; 56 struct mm_struct; 57 struct fs_context; 58 struct fs_parameter; 59 enum fs_value_type; 60 61 /* Default (no) options for the capable function */ 62 #define CAP_OPT_NONE 0x0 63 /* If capable should audit the security request */ 64 #define CAP_OPT_NOAUDIT BIT(1) 65 /* If capable is being called by a setid function */ 66 #define CAP_OPT_INSETID BIT(2) 67 68 /* LSM Agnostic defines for fs_context::lsm_flags */ 69 #define SECURITY_LSM_NATIVE_LABELS 1 70 71 struct ctl_table; 72 struct audit_krule; 73 struct user_namespace; 74 struct timezone; 75 76 enum lsm_event { 77 LSM_POLICY_CHANGE, 78 }; 79 80 /* 81 * These are reasons that can be passed to the security_locked_down() 82 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 83 * ability for userland to modify kernel code) are placed before 84 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 85 * confidentiality (ie, the ability for userland to extract 86 * information from the running kernel that would otherwise be 87 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 88 * 89 * LSM authors should note that the semantics of any given lockdown 90 * reason are not guaranteed to be stable - the same reason may block 91 * one set of features in one kernel release, and a slightly different 92 * set of features in a later kernel release. LSMs that seek to expose 93 * lockdown policy at any level of granularity other than "none", 94 * "integrity" or "confidentiality" are responsible for either 95 * ensuring that they expose a consistent level of functionality to 96 * userland, or ensuring that userland is aware that this is 97 * potentially a moving target. It is easy to misuse this information 98 * in a way that could break userspace. Please be careful not to do 99 * so. 100 * 101 * If you add to this, remember to extend lockdown_reasons in 102 * security/lockdown/lockdown.c. 103 */ 104 enum lockdown_reason { 105 LOCKDOWN_NONE, 106 LOCKDOWN_MODULE_SIGNATURE, 107 LOCKDOWN_DEV_MEM, 108 LOCKDOWN_KEXEC, 109 LOCKDOWN_HIBERNATION, 110 LOCKDOWN_PCI_ACCESS, 111 LOCKDOWN_IOPORT, 112 LOCKDOWN_MSR, 113 LOCKDOWN_ACPI_TABLES, 114 LOCKDOWN_PCMCIA_CIS, 115 LOCKDOWN_TIOCSSERIAL, 116 LOCKDOWN_MODULE_PARAMETERS, 117 LOCKDOWN_MMIOTRACE, 118 LOCKDOWN_DEBUGFS, 119 LOCKDOWN_XMON_WR, 120 LOCKDOWN_INTEGRITY_MAX, 121 LOCKDOWN_KCORE, 122 LOCKDOWN_KPROBES, 123 LOCKDOWN_BPF_READ, 124 LOCKDOWN_PERF, 125 LOCKDOWN_TRACEFS, 126 LOCKDOWN_XMON_RW, 127 LOCKDOWN_CONFIDENTIALITY_MAX, 128 }; 129 130 /* These functions are in security/commoncap.c */ 131 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 132 int cap, unsigned int opts); 133 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 134 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 135 extern int cap_ptrace_traceme(struct task_struct *parent); 136 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 137 extern int cap_capset(struct cred *new, const struct cred *old, 138 const kernel_cap_t *effective, 139 const kernel_cap_t *inheritable, 140 const kernel_cap_t *permitted); 141 extern int cap_bprm_set_creds(struct linux_binprm *bprm); 142 extern int cap_inode_setxattr(struct dentry *dentry, const char *name, 143 const void *value, size_t size, int flags); 144 extern int cap_inode_removexattr(struct dentry *dentry, const char *name); 145 extern int cap_inode_need_killpriv(struct dentry *dentry); 146 extern int cap_inode_killpriv(struct dentry *dentry); 147 extern int cap_inode_getsecurity(struct inode *inode, const char *name, 148 void **buffer, bool alloc); 149 extern int cap_mmap_addr(unsigned long addr); 150 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 151 unsigned long prot, unsigned long flags); 152 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 153 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 154 unsigned long arg4, unsigned long arg5); 155 extern int cap_task_setscheduler(struct task_struct *p); 156 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 157 extern int cap_task_setnice(struct task_struct *p, int nice); 158 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 159 160 struct msghdr; 161 struct sk_buff; 162 struct sock; 163 struct sockaddr; 164 struct socket; 165 struct flowi; 166 struct dst_entry; 167 struct xfrm_selector; 168 struct xfrm_policy; 169 struct xfrm_state; 170 struct xfrm_user_sec_ctx; 171 struct seq_file; 172 struct sctp_endpoint; 173 174 #ifdef CONFIG_MMU 175 extern unsigned long mmap_min_addr; 176 extern unsigned long dac_mmap_min_addr; 177 #else 178 #define mmap_min_addr 0UL 179 #define dac_mmap_min_addr 0UL 180 #endif 181 182 /* 183 * Values used in the task_security_ops calls 184 */ 185 /* setuid or setgid, id0 == uid or gid */ 186 #define LSM_SETID_ID 1 187 188 /* setreuid or setregid, id0 == real, id1 == eff */ 189 #define LSM_SETID_RE 2 190 191 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 192 #define LSM_SETID_RES 4 193 194 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 195 #define LSM_SETID_FS 8 196 197 /* Flags for security_task_prlimit(). */ 198 #define LSM_PRLIMIT_READ 1 199 #define LSM_PRLIMIT_WRITE 2 200 201 /* forward declares to avoid warnings */ 202 struct sched_param; 203 struct request_sock; 204 205 /* bprm->unsafe reasons */ 206 #define LSM_UNSAFE_SHARE 1 207 #define LSM_UNSAFE_PTRACE 2 208 #define LSM_UNSAFE_NO_NEW_PRIVS 4 209 210 #ifdef CONFIG_MMU 211 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 212 void __user *buffer, size_t *lenp, loff_t *ppos); 213 #endif 214 215 /* security_inode_init_security callback function to write xattrs */ 216 typedef int (*initxattrs) (struct inode *inode, 217 const struct xattr *xattr_array, void *fs_data); 218 219 220 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 221 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 222 #define __data_id_stringify(dummy, str) #str, 223 224 enum kernel_load_data_id { 225 __kernel_read_file_id(__data_id_enumify) 226 }; 227 228 static const char * const kernel_load_data_str[] = { 229 __kernel_read_file_id(__data_id_stringify) 230 }; 231 232 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 233 { 234 if ((unsigned)id >= LOADING_MAX_ID) 235 return kernel_load_data_str[LOADING_UNKNOWN]; 236 237 return kernel_load_data_str[id]; 238 } 239 240 #ifdef CONFIG_SECURITY 241 242 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 243 int register_blocking_lsm_notifier(struct notifier_block *nb); 244 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 245 246 /* prototypes */ 247 extern int security_init(void); 248 extern int early_security_init(void); 249 250 /* Security operations */ 251 int security_binder_set_context_mgr(struct task_struct *mgr); 252 int security_binder_transaction(struct task_struct *from, 253 struct task_struct *to); 254 int security_binder_transfer_binder(struct task_struct *from, 255 struct task_struct *to); 256 int security_binder_transfer_file(struct task_struct *from, 257 struct task_struct *to, struct file *file); 258 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 259 int security_ptrace_traceme(struct task_struct *parent); 260 int security_capget(struct task_struct *target, 261 kernel_cap_t *effective, 262 kernel_cap_t *inheritable, 263 kernel_cap_t *permitted); 264 int security_capset(struct cred *new, const struct cred *old, 265 const kernel_cap_t *effective, 266 const kernel_cap_t *inheritable, 267 const kernel_cap_t *permitted); 268 int security_capable(const struct cred *cred, 269 struct user_namespace *ns, 270 int cap, 271 unsigned int opts); 272 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 273 int security_quota_on(struct dentry *dentry); 274 int security_syslog(int type); 275 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 276 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 277 int security_bprm_set_creds(struct linux_binprm *bprm); 278 int security_bprm_check(struct linux_binprm *bprm); 279 void security_bprm_committing_creds(struct linux_binprm *bprm); 280 void security_bprm_committed_creds(struct linux_binprm *bprm); 281 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 282 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 283 int security_sb_alloc(struct super_block *sb); 284 void security_sb_free(struct super_block *sb); 285 void security_free_mnt_opts(void **mnt_opts); 286 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 287 int security_sb_remount(struct super_block *sb, void *mnt_opts); 288 int security_sb_kern_mount(struct super_block *sb); 289 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 290 int security_sb_statfs(struct dentry *dentry); 291 int security_sb_mount(const char *dev_name, const struct path *path, 292 const char *type, unsigned long flags, void *data); 293 int security_sb_umount(struct vfsmount *mnt, int flags); 294 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 295 int security_sb_set_mnt_opts(struct super_block *sb, 296 void *mnt_opts, 297 unsigned long kern_flags, 298 unsigned long *set_kern_flags); 299 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 300 struct super_block *newsb, 301 unsigned long kern_flags, 302 unsigned long *set_kern_flags); 303 int security_add_mnt_opt(const char *option, const char *val, 304 int len, void **mnt_opts); 305 int security_move_mount(const struct path *from_path, const struct path *to_path); 306 int security_dentry_init_security(struct dentry *dentry, int mode, 307 const struct qstr *name, void **ctx, 308 u32 *ctxlen); 309 int security_dentry_create_files_as(struct dentry *dentry, int mode, 310 struct qstr *name, 311 const struct cred *old, 312 struct cred *new); 313 int security_path_notify(const struct path *path, u64 mask, 314 unsigned int obj_type); 315 int security_inode_alloc(struct inode *inode); 316 void security_inode_free(struct inode *inode); 317 int security_inode_init_security(struct inode *inode, struct inode *dir, 318 const struct qstr *qstr, 319 initxattrs initxattrs, void *fs_data); 320 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 321 const struct qstr *qstr, const char **name, 322 void **value, size_t *len); 323 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 324 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 325 struct dentry *new_dentry); 326 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 327 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 328 const char *old_name); 329 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 330 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 331 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 332 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 333 struct inode *new_dir, struct dentry *new_dentry, 334 unsigned int flags); 335 int security_inode_readlink(struct dentry *dentry); 336 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 337 bool rcu); 338 int security_inode_permission(struct inode *inode, int mask); 339 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 340 int security_inode_getattr(const struct path *path); 341 int security_inode_setxattr(struct dentry *dentry, const char *name, 342 const void *value, size_t size, int flags); 343 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 344 const void *value, size_t size, int flags); 345 int security_inode_getxattr(struct dentry *dentry, const char *name); 346 int security_inode_listxattr(struct dentry *dentry); 347 int security_inode_removexattr(struct dentry *dentry, const char *name); 348 int security_inode_need_killpriv(struct dentry *dentry); 349 int security_inode_killpriv(struct dentry *dentry); 350 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc); 351 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 352 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 353 void security_inode_getsecid(struct inode *inode, u32 *secid); 354 int security_inode_copy_up(struct dentry *src, struct cred **new); 355 int security_inode_copy_up_xattr(const char *name); 356 int security_kernfs_init_security(struct kernfs_node *kn_dir, 357 struct kernfs_node *kn); 358 int security_file_permission(struct file *file, int mask); 359 int security_file_alloc(struct file *file); 360 void security_file_free(struct file *file); 361 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 362 int security_mmap_file(struct file *file, unsigned long prot, 363 unsigned long flags); 364 int security_mmap_addr(unsigned long addr); 365 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 366 unsigned long prot); 367 int security_file_lock(struct file *file, unsigned int cmd); 368 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 369 void security_file_set_fowner(struct file *file); 370 int security_file_send_sigiotask(struct task_struct *tsk, 371 struct fown_struct *fown, int sig); 372 int security_file_receive(struct file *file); 373 int security_file_open(struct file *file); 374 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 375 void security_task_free(struct task_struct *task); 376 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 377 void security_cred_free(struct cred *cred); 378 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 379 void security_transfer_creds(struct cred *new, const struct cred *old); 380 void security_cred_getsecid(const struct cred *c, u32 *secid); 381 int security_kernel_act_as(struct cred *new, u32 secid); 382 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 383 int security_kernel_module_request(char *kmod_name); 384 int security_kernel_load_data(enum kernel_load_data_id id); 385 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id); 386 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 387 enum kernel_read_file_id id); 388 int security_task_fix_setuid(struct cred *new, const struct cred *old, 389 int flags); 390 int security_task_setpgid(struct task_struct *p, pid_t pgid); 391 int security_task_getpgid(struct task_struct *p); 392 int security_task_getsid(struct task_struct *p); 393 void security_task_getsecid(struct task_struct *p, u32 *secid); 394 int security_task_setnice(struct task_struct *p, int nice); 395 int security_task_setioprio(struct task_struct *p, int ioprio); 396 int security_task_getioprio(struct task_struct *p); 397 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 398 unsigned int flags); 399 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 400 struct rlimit *new_rlim); 401 int security_task_setscheduler(struct task_struct *p); 402 int security_task_getscheduler(struct task_struct *p); 403 int security_task_movememory(struct task_struct *p); 404 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 405 int sig, const struct cred *cred); 406 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 407 unsigned long arg4, unsigned long arg5); 408 void security_task_to_inode(struct task_struct *p, struct inode *inode); 409 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 410 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 411 int security_msg_msg_alloc(struct msg_msg *msg); 412 void security_msg_msg_free(struct msg_msg *msg); 413 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 414 void security_msg_queue_free(struct kern_ipc_perm *msq); 415 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 416 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 417 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 418 struct msg_msg *msg, int msqflg); 419 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 420 struct task_struct *target, long type, int mode); 421 int security_shm_alloc(struct kern_ipc_perm *shp); 422 void security_shm_free(struct kern_ipc_perm *shp); 423 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 424 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 425 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 426 int security_sem_alloc(struct kern_ipc_perm *sma); 427 void security_sem_free(struct kern_ipc_perm *sma); 428 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 429 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 430 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 431 unsigned nsops, int alter); 432 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 433 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 434 char **value); 435 int security_setprocattr(const char *lsm, const char *name, void *value, 436 size_t size); 437 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 438 int security_ismaclabel(const char *name); 439 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 440 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 441 void security_release_secctx(char *secdata, u32 seclen); 442 void security_inode_invalidate_secctx(struct inode *inode); 443 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 444 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 445 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 446 int security_locked_down(enum lockdown_reason what); 447 #else /* CONFIG_SECURITY */ 448 449 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 450 { 451 return 0; 452 } 453 454 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 455 { 456 return 0; 457 } 458 459 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 460 { 461 return 0; 462 } 463 464 static inline void security_free_mnt_opts(void **mnt_opts) 465 { 466 } 467 468 /* 469 * This is the default capabilities functionality. Most of these functions 470 * are just stubbed out, but a few must call the proper capable code. 471 */ 472 473 static inline int security_init(void) 474 { 475 return 0; 476 } 477 478 static inline int early_security_init(void) 479 { 480 return 0; 481 } 482 483 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 484 { 485 return 0; 486 } 487 488 static inline int security_binder_transaction(struct task_struct *from, 489 struct task_struct *to) 490 { 491 return 0; 492 } 493 494 static inline int security_binder_transfer_binder(struct task_struct *from, 495 struct task_struct *to) 496 { 497 return 0; 498 } 499 500 static inline int security_binder_transfer_file(struct task_struct *from, 501 struct task_struct *to, 502 struct file *file) 503 { 504 return 0; 505 } 506 507 static inline int security_ptrace_access_check(struct task_struct *child, 508 unsigned int mode) 509 { 510 return cap_ptrace_access_check(child, mode); 511 } 512 513 static inline int security_ptrace_traceme(struct task_struct *parent) 514 { 515 return cap_ptrace_traceme(parent); 516 } 517 518 static inline int security_capget(struct task_struct *target, 519 kernel_cap_t *effective, 520 kernel_cap_t *inheritable, 521 kernel_cap_t *permitted) 522 { 523 return cap_capget(target, effective, inheritable, permitted); 524 } 525 526 static inline int security_capset(struct cred *new, 527 const struct cred *old, 528 const kernel_cap_t *effective, 529 const kernel_cap_t *inheritable, 530 const kernel_cap_t *permitted) 531 { 532 return cap_capset(new, old, effective, inheritable, permitted); 533 } 534 535 static inline int security_capable(const struct cred *cred, 536 struct user_namespace *ns, 537 int cap, 538 unsigned int opts) 539 { 540 return cap_capable(cred, ns, cap, opts); 541 } 542 543 static inline int security_quotactl(int cmds, int type, int id, 544 struct super_block *sb) 545 { 546 return 0; 547 } 548 549 static inline int security_quota_on(struct dentry *dentry) 550 { 551 return 0; 552 } 553 554 static inline int security_syslog(int type) 555 { 556 return 0; 557 } 558 559 static inline int security_settime64(const struct timespec64 *ts, 560 const struct timezone *tz) 561 { 562 return cap_settime(ts, tz); 563 } 564 565 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 566 { 567 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 568 } 569 570 static inline int security_bprm_set_creds(struct linux_binprm *bprm) 571 { 572 return cap_bprm_set_creds(bprm); 573 } 574 575 static inline int security_bprm_check(struct linux_binprm *bprm) 576 { 577 return 0; 578 } 579 580 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 581 { 582 } 583 584 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 585 { 586 } 587 588 static inline int security_fs_context_dup(struct fs_context *fc, 589 struct fs_context *src_fc) 590 { 591 return 0; 592 } 593 static inline int security_fs_context_parse_param(struct fs_context *fc, 594 struct fs_parameter *param) 595 { 596 return -ENOPARAM; 597 } 598 599 static inline int security_sb_alloc(struct super_block *sb) 600 { 601 return 0; 602 } 603 604 static inline void security_sb_free(struct super_block *sb) 605 { } 606 607 static inline int security_sb_eat_lsm_opts(char *options, 608 void **mnt_opts) 609 { 610 return 0; 611 } 612 613 static inline int security_sb_remount(struct super_block *sb, 614 void *mnt_opts) 615 { 616 return 0; 617 } 618 619 static inline int security_sb_kern_mount(struct super_block *sb) 620 { 621 return 0; 622 } 623 624 static inline int security_sb_show_options(struct seq_file *m, 625 struct super_block *sb) 626 { 627 return 0; 628 } 629 630 static inline int security_sb_statfs(struct dentry *dentry) 631 { 632 return 0; 633 } 634 635 static inline int security_sb_mount(const char *dev_name, const struct path *path, 636 const char *type, unsigned long flags, 637 void *data) 638 { 639 return 0; 640 } 641 642 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 643 { 644 return 0; 645 } 646 647 static inline int security_sb_pivotroot(const struct path *old_path, 648 const struct path *new_path) 649 { 650 return 0; 651 } 652 653 static inline int security_sb_set_mnt_opts(struct super_block *sb, 654 void *mnt_opts, 655 unsigned long kern_flags, 656 unsigned long *set_kern_flags) 657 { 658 return 0; 659 } 660 661 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 662 struct super_block *newsb, 663 unsigned long kern_flags, 664 unsigned long *set_kern_flags) 665 { 666 return 0; 667 } 668 669 static inline int security_add_mnt_opt(const char *option, const char *val, 670 int len, void **mnt_opts) 671 { 672 return 0; 673 } 674 675 static inline int security_move_mount(const struct path *from_path, 676 const struct path *to_path) 677 { 678 return 0; 679 } 680 681 static inline int security_path_notify(const struct path *path, u64 mask, 682 unsigned int obj_type) 683 { 684 return 0; 685 } 686 687 static inline int security_inode_alloc(struct inode *inode) 688 { 689 return 0; 690 } 691 692 static inline void security_inode_free(struct inode *inode) 693 { } 694 695 static inline int security_dentry_init_security(struct dentry *dentry, 696 int mode, 697 const struct qstr *name, 698 void **ctx, 699 u32 *ctxlen) 700 { 701 return -EOPNOTSUPP; 702 } 703 704 static inline int security_dentry_create_files_as(struct dentry *dentry, 705 int mode, struct qstr *name, 706 const struct cred *old, 707 struct cred *new) 708 { 709 return 0; 710 } 711 712 713 static inline int security_inode_init_security(struct inode *inode, 714 struct inode *dir, 715 const struct qstr *qstr, 716 const initxattrs xattrs, 717 void *fs_data) 718 { 719 return 0; 720 } 721 722 static inline int security_old_inode_init_security(struct inode *inode, 723 struct inode *dir, 724 const struct qstr *qstr, 725 const char **name, 726 void **value, size_t *len) 727 { 728 return -EOPNOTSUPP; 729 } 730 731 static inline int security_inode_create(struct inode *dir, 732 struct dentry *dentry, 733 umode_t mode) 734 { 735 return 0; 736 } 737 738 static inline int security_inode_link(struct dentry *old_dentry, 739 struct inode *dir, 740 struct dentry *new_dentry) 741 { 742 return 0; 743 } 744 745 static inline int security_inode_unlink(struct inode *dir, 746 struct dentry *dentry) 747 { 748 return 0; 749 } 750 751 static inline int security_inode_symlink(struct inode *dir, 752 struct dentry *dentry, 753 const char *old_name) 754 { 755 return 0; 756 } 757 758 static inline int security_inode_mkdir(struct inode *dir, 759 struct dentry *dentry, 760 int mode) 761 { 762 return 0; 763 } 764 765 static inline int security_inode_rmdir(struct inode *dir, 766 struct dentry *dentry) 767 { 768 return 0; 769 } 770 771 static inline int security_inode_mknod(struct inode *dir, 772 struct dentry *dentry, 773 int mode, dev_t dev) 774 { 775 return 0; 776 } 777 778 static inline int security_inode_rename(struct inode *old_dir, 779 struct dentry *old_dentry, 780 struct inode *new_dir, 781 struct dentry *new_dentry, 782 unsigned int flags) 783 { 784 return 0; 785 } 786 787 static inline int security_inode_readlink(struct dentry *dentry) 788 { 789 return 0; 790 } 791 792 static inline int security_inode_follow_link(struct dentry *dentry, 793 struct inode *inode, 794 bool rcu) 795 { 796 return 0; 797 } 798 799 static inline int security_inode_permission(struct inode *inode, int mask) 800 { 801 return 0; 802 } 803 804 static inline int security_inode_setattr(struct dentry *dentry, 805 struct iattr *attr) 806 { 807 return 0; 808 } 809 810 static inline int security_inode_getattr(const struct path *path) 811 { 812 return 0; 813 } 814 815 static inline int security_inode_setxattr(struct dentry *dentry, 816 const char *name, const void *value, size_t size, int flags) 817 { 818 return cap_inode_setxattr(dentry, name, value, size, flags); 819 } 820 821 static inline void security_inode_post_setxattr(struct dentry *dentry, 822 const char *name, const void *value, size_t size, int flags) 823 { } 824 825 static inline int security_inode_getxattr(struct dentry *dentry, 826 const char *name) 827 { 828 return 0; 829 } 830 831 static inline int security_inode_listxattr(struct dentry *dentry) 832 { 833 return 0; 834 } 835 836 static inline int security_inode_removexattr(struct dentry *dentry, 837 const char *name) 838 { 839 return cap_inode_removexattr(dentry, name); 840 } 841 842 static inline int security_inode_need_killpriv(struct dentry *dentry) 843 { 844 return cap_inode_need_killpriv(dentry); 845 } 846 847 static inline int security_inode_killpriv(struct dentry *dentry) 848 { 849 return cap_inode_killpriv(dentry); 850 } 851 852 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) 853 { 854 return -EOPNOTSUPP; 855 } 856 857 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 858 { 859 return -EOPNOTSUPP; 860 } 861 862 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 863 { 864 return 0; 865 } 866 867 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 868 { 869 *secid = 0; 870 } 871 872 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 873 { 874 return 0; 875 } 876 877 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 878 struct kernfs_node *kn) 879 { 880 return 0; 881 } 882 883 static inline int security_inode_copy_up_xattr(const char *name) 884 { 885 return -EOPNOTSUPP; 886 } 887 888 static inline int security_file_permission(struct file *file, int mask) 889 { 890 return 0; 891 } 892 893 static inline int security_file_alloc(struct file *file) 894 { 895 return 0; 896 } 897 898 static inline void security_file_free(struct file *file) 899 { } 900 901 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 902 unsigned long arg) 903 { 904 return 0; 905 } 906 907 static inline int security_mmap_file(struct file *file, unsigned long prot, 908 unsigned long flags) 909 { 910 return 0; 911 } 912 913 static inline int security_mmap_addr(unsigned long addr) 914 { 915 return cap_mmap_addr(addr); 916 } 917 918 static inline int security_file_mprotect(struct vm_area_struct *vma, 919 unsigned long reqprot, 920 unsigned long prot) 921 { 922 return 0; 923 } 924 925 static inline int security_file_lock(struct file *file, unsigned int cmd) 926 { 927 return 0; 928 } 929 930 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 931 unsigned long arg) 932 { 933 return 0; 934 } 935 936 static inline void security_file_set_fowner(struct file *file) 937 { 938 return; 939 } 940 941 static inline int security_file_send_sigiotask(struct task_struct *tsk, 942 struct fown_struct *fown, 943 int sig) 944 { 945 return 0; 946 } 947 948 static inline int security_file_receive(struct file *file) 949 { 950 return 0; 951 } 952 953 static inline int security_file_open(struct file *file) 954 { 955 return 0; 956 } 957 958 static inline int security_task_alloc(struct task_struct *task, 959 unsigned long clone_flags) 960 { 961 return 0; 962 } 963 964 static inline void security_task_free(struct task_struct *task) 965 { } 966 967 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 968 { 969 return 0; 970 } 971 972 static inline void security_cred_free(struct cred *cred) 973 { } 974 975 static inline int security_prepare_creds(struct cred *new, 976 const struct cred *old, 977 gfp_t gfp) 978 { 979 return 0; 980 } 981 982 static inline void security_transfer_creds(struct cred *new, 983 const struct cred *old) 984 { 985 } 986 987 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 988 { 989 return 0; 990 } 991 992 static inline int security_kernel_create_files_as(struct cred *cred, 993 struct inode *inode) 994 { 995 return 0; 996 } 997 998 static inline int security_kernel_module_request(char *kmod_name) 999 { 1000 return 0; 1001 } 1002 1003 static inline int security_kernel_load_data(enum kernel_load_data_id id) 1004 { 1005 return 0; 1006 } 1007 1008 static inline int security_kernel_read_file(struct file *file, 1009 enum kernel_read_file_id id) 1010 { 1011 return 0; 1012 } 1013 1014 static inline int security_kernel_post_read_file(struct file *file, 1015 char *buf, loff_t size, 1016 enum kernel_read_file_id id) 1017 { 1018 return 0; 1019 } 1020 1021 static inline int security_task_fix_setuid(struct cred *new, 1022 const struct cred *old, 1023 int flags) 1024 { 1025 return cap_task_fix_setuid(new, old, flags); 1026 } 1027 1028 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1029 { 1030 return 0; 1031 } 1032 1033 static inline int security_task_getpgid(struct task_struct *p) 1034 { 1035 return 0; 1036 } 1037 1038 static inline int security_task_getsid(struct task_struct *p) 1039 { 1040 return 0; 1041 } 1042 1043 static inline void security_task_getsecid(struct task_struct *p, u32 *secid) 1044 { 1045 *secid = 0; 1046 } 1047 1048 static inline int security_task_setnice(struct task_struct *p, int nice) 1049 { 1050 return cap_task_setnice(p, nice); 1051 } 1052 1053 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1054 { 1055 return cap_task_setioprio(p, ioprio); 1056 } 1057 1058 static inline int security_task_getioprio(struct task_struct *p) 1059 { 1060 return 0; 1061 } 1062 1063 static inline int security_task_prlimit(const struct cred *cred, 1064 const struct cred *tcred, 1065 unsigned int flags) 1066 { 1067 return 0; 1068 } 1069 1070 static inline int security_task_setrlimit(struct task_struct *p, 1071 unsigned int resource, 1072 struct rlimit *new_rlim) 1073 { 1074 return 0; 1075 } 1076 1077 static inline int security_task_setscheduler(struct task_struct *p) 1078 { 1079 return cap_task_setscheduler(p); 1080 } 1081 1082 static inline int security_task_getscheduler(struct task_struct *p) 1083 { 1084 return 0; 1085 } 1086 1087 static inline int security_task_movememory(struct task_struct *p) 1088 { 1089 return 0; 1090 } 1091 1092 static inline int security_task_kill(struct task_struct *p, 1093 struct kernel_siginfo *info, int sig, 1094 const struct cred *cred) 1095 { 1096 return 0; 1097 } 1098 1099 static inline int security_task_prctl(int option, unsigned long arg2, 1100 unsigned long arg3, 1101 unsigned long arg4, 1102 unsigned long arg5) 1103 { 1104 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1105 } 1106 1107 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1108 { } 1109 1110 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1111 short flag) 1112 { 1113 return 0; 1114 } 1115 1116 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1117 { 1118 *secid = 0; 1119 } 1120 1121 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1122 { 1123 return 0; 1124 } 1125 1126 static inline void security_msg_msg_free(struct msg_msg *msg) 1127 { } 1128 1129 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1130 { 1131 return 0; 1132 } 1133 1134 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1135 { } 1136 1137 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1138 int msqflg) 1139 { 1140 return 0; 1141 } 1142 1143 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1144 { 1145 return 0; 1146 } 1147 1148 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1149 struct msg_msg *msg, int msqflg) 1150 { 1151 return 0; 1152 } 1153 1154 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1155 struct msg_msg *msg, 1156 struct task_struct *target, 1157 long type, int mode) 1158 { 1159 return 0; 1160 } 1161 1162 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1163 { 1164 return 0; 1165 } 1166 1167 static inline void security_shm_free(struct kern_ipc_perm *shp) 1168 { } 1169 1170 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1171 int shmflg) 1172 { 1173 return 0; 1174 } 1175 1176 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1177 { 1178 return 0; 1179 } 1180 1181 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1182 char __user *shmaddr, int shmflg) 1183 { 1184 return 0; 1185 } 1186 1187 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1188 { 1189 return 0; 1190 } 1191 1192 static inline void security_sem_free(struct kern_ipc_perm *sma) 1193 { } 1194 1195 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1196 { 1197 return 0; 1198 } 1199 1200 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1201 { 1202 return 0; 1203 } 1204 1205 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1206 struct sembuf *sops, unsigned nsops, 1207 int alter) 1208 { 1209 return 0; 1210 } 1211 1212 static inline void security_d_instantiate(struct dentry *dentry, 1213 struct inode *inode) 1214 { } 1215 1216 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1217 char *name, char **value) 1218 { 1219 return -EINVAL; 1220 } 1221 1222 static inline int security_setprocattr(const char *lsm, char *name, 1223 void *value, size_t size) 1224 { 1225 return -EINVAL; 1226 } 1227 1228 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1229 { 1230 return 0; 1231 } 1232 1233 static inline int security_ismaclabel(const char *name) 1234 { 1235 return 0; 1236 } 1237 1238 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1239 { 1240 return -EOPNOTSUPP; 1241 } 1242 1243 static inline int security_secctx_to_secid(const char *secdata, 1244 u32 seclen, 1245 u32 *secid) 1246 { 1247 return -EOPNOTSUPP; 1248 } 1249 1250 static inline void security_release_secctx(char *secdata, u32 seclen) 1251 { 1252 } 1253 1254 static inline void security_inode_invalidate_secctx(struct inode *inode) 1255 { 1256 } 1257 1258 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1259 { 1260 return -EOPNOTSUPP; 1261 } 1262 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1263 { 1264 return -EOPNOTSUPP; 1265 } 1266 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1267 { 1268 return -EOPNOTSUPP; 1269 } 1270 static inline int security_locked_down(enum lockdown_reason what) 1271 { 1272 return 0; 1273 } 1274 #endif /* CONFIG_SECURITY */ 1275 1276 #ifdef CONFIG_SECURITY_NETWORK 1277 1278 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1279 int security_unix_may_send(struct socket *sock, struct socket *other); 1280 int security_socket_create(int family, int type, int protocol, int kern); 1281 int security_socket_post_create(struct socket *sock, int family, 1282 int type, int protocol, int kern); 1283 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1284 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1285 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1286 int security_socket_listen(struct socket *sock, int backlog); 1287 int security_socket_accept(struct socket *sock, struct socket *newsock); 1288 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1289 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1290 int size, int flags); 1291 int security_socket_getsockname(struct socket *sock); 1292 int security_socket_getpeername(struct socket *sock); 1293 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1294 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1295 int security_socket_shutdown(struct socket *sock, int how); 1296 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1297 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1298 int __user *optlen, unsigned len); 1299 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1300 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1301 void security_sk_free(struct sock *sk); 1302 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1303 void security_sk_classify_flow(struct sock *sk, struct flowi *fl); 1304 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl); 1305 void security_sock_graft(struct sock*sk, struct socket *parent); 1306 int security_inet_conn_request(struct sock *sk, 1307 struct sk_buff *skb, struct request_sock *req); 1308 void security_inet_csk_clone(struct sock *newsk, 1309 const struct request_sock *req); 1310 void security_inet_conn_established(struct sock *sk, 1311 struct sk_buff *skb); 1312 int security_secmark_relabel_packet(u32 secid); 1313 void security_secmark_refcount_inc(void); 1314 void security_secmark_refcount_dec(void); 1315 int security_tun_dev_alloc_security(void **security); 1316 void security_tun_dev_free_security(void *security); 1317 int security_tun_dev_create(void); 1318 int security_tun_dev_attach_queue(void *security); 1319 int security_tun_dev_attach(struct sock *sk, void *security); 1320 int security_tun_dev_open(void *security); 1321 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1322 int security_sctp_bind_connect(struct sock *sk, int optname, 1323 struct sockaddr *address, int addrlen); 1324 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1325 struct sock *newsk); 1326 1327 #else /* CONFIG_SECURITY_NETWORK */ 1328 static inline int security_unix_stream_connect(struct sock *sock, 1329 struct sock *other, 1330 struct sock *newsk) 1331 { 1332 return 0; 1333 } 1334 1335 static inline int security_unix_may_send(struct socket *sock, 1336 struct socket *other) 1337 { 1338 return 0; 1339 } 1340 1341 static inline int security_socket_create(int family, int type, 1342 int protocol, int kern) 1343 { 1344 return 0; 1345 } 1346 1347 static inline int security_socket_post_create(struct socket *sock, 1348 int family, 1349 int type, 1350 int protocol, int kern) 1351 { 1352 return 0; 1353 } 1354 1355 static inline int security_socket_socketpair(struct socket *socka, 1356 struct socket *sockb) 1357 { 1358 return 0; 1359 } 1360 1361 static inline int security_socket_bind(struct socket *sock, 1362 struct sockaddr *address, 1363 int addrlen) 1364 { 1365 return 0; 1366 } 1367 1368 static inline int security_socket_connect(struct socket *sock, 1369 struct sockaddr *address, 1370 int addrlen) 1371 { 1372 return 0; 1373 } 1374 1375 static inline int security_socket_listen(struct socket *sock, int backlog) 1376 { 1377 return 0; 1378 } 1379 1380 static inline int security_socket_accept(struct socket *sock, 1381 struct socket *newsock) 1382 { 1383 return 0; 1384 } 1385 1386 static inline int security_socket_sendmsg(struct socket *sock, 1387 struct msghdr *msg, int size) 1388 { 1389 return 0; 1390 } 1391 1392 static inline int security_socket_recvmsg(struct socket *sock, 1393 struct msghdr *msg, int size, 1394 int flags) 1395 { 1396 return 0; 1397 } 1398 1399 static inline int security_socket_getsockname(struct socket *sock) 1400 { 1401 return 0; 1402 } 1403 1404 static inline int security_socket_getpeername(struct socket *sock) 1405 { 1406 return 0; 1407 } 1408 1409 static inline int security_socket_getsockopt(struct socket *sock, 1410 int level, int optname) 1411 { 1412 return 0; 1413 } 1414 1415 static inline int security_socket_setsockopt(struct socket *sock, 1416 int level, int optname) 1417 { 1418 return 0; 1419 } 1420 1421 static inline int security_socket_shutdown(struct socket *sock, int how) 1422 { 1423 return 0; 1424 } 1425 static inline int security_sock_rcv_skb(struct sock *sk, 1426 struct sk_buff *skb) 1427 { 1428 return 0; 1429 } 1430 1431 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1432 int __user *optlen, unsigned len) 1433 { 1434 return -ENOPROTOOPT; 1435 } 1436 1437 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1438 { 1439 return -ENOPROTOOPT; 1440 } 1441 1442 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1443 { 1444 return 0; 1445 } 1446 1447 static inline void security_sk_free(struct sock *sk) 1448 { 1449 } 1450 1451 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1452 { 1453 } 1454 1455 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1456 { 1457 } 1458 1459 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1460 { 1461 } 1462 1463 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1464 { 1465 } 1466 1467 static inline int security_inet_conn_request(struct sock *sk, 1468 struct sk_buff *skb, struct request_sock *req) 1469 { 1470 return 0; 1471 } 1472 1473 static inline void security_inet_csk_clone(struct sock *newsk, 1474 const struct request_sock *req) 1475 { 1476 } 1477 1478 static inline void security_inet_conn_established(struct sock *sk, 1479 struct sk_buff *skb) 1480 { 1481 } 1482 1483 static inline int security_secmark_relabel_packet(u32 secid) 1484 { 1485 return 0; 1486 } 1487 1488 static inline void security_secmark_refcount_inc(void) 1489 { 1490 } 1491 1492 static inline void security_secmark_refcount_dec(void) 1493 { 1494 } 1495 1496 static inline int security_tun_dev_alloc_security(void **security) 1497 { 1498 return 0; 1499 } 1500 1501 static inline void security_tun_dev_free_security(void *security) 1502 { 1503 } 1504 1505 static inline int security_tun_dev_create(void) 1506 { 1507 return 0; 1508 } 1509 1510 static inline int security_tun_dev_attach_queue(void *security) 1511 { 1512 return 0; 1513 } 1514 1515 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1516 { 1517 return 0; 1518 } 1519 1520 static inline int security_tun_dev_open(void *security) 1521 { 1522 return 0; 1523 } 1524 1525 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1526 struct sk_buff *skb) 1527 { 1528 return 0; 1529 } 1530 1531 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1532 struct sockaddr *address, 1533 int addrlen) 1534 { 1535 return 0; 1536 } 1537 1538 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1539 struct sock *sk, 1540 struct sock *newsk) 1541 { 1542 } 1543 #endif /* CONFIG_SECURITY_NETWORK */ 1544 1545 #ifdef CONFIG_SECURITY_INFINIBAND 1546 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1547 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1548 int security_ib_alloc_security(void **sec); 1549 void security_ib_free_security(void *sec); 1550 #else /* CONFIG_SECURITY_INFINIBAND */ 1551 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1552 { 1553 return 0; 1554 } 1555 1556 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1557 { 1558 return 0; 1559 } 1560 1561 static inline int security_ib_alloc_security(void **sec) 1562 { 1563 return 0; 1564 } 1565 1566 static inline void security_ib_free_security(void *sec) 1567 { 1568 } 1569 #endif /* CONFIG_SECURITY_INFINIBAND */ 1570 1571 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1572 1573 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1574 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1575 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1576 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1577 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1578 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1579 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1580 struct xfrm_sec_ctx *polsec, u32 secid); 1581 int security_xfrm_state_delete(struct xfrm_state *x); 1582 void security_xfrm_state_free(struct xfrm_state *x); 1583 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1584 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1585 struct xfrm_policy *xp, 1586 const struct flowi *fl); 1587 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1588 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl); 1589 1590 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1591 1592 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1593 struct xfrm_user_sec_ctx *sec_ctx, 1594 gfp_t gfp) 1595 { 1596 return 0; 1597 } 1598 1599 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1600 { 1601 return 0; 1602 } 1603 1604 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1605 { 1606 } 1607 1608 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1609 { 1610 return 0; 1611 } 1612 1613 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1614 struct xfrm_user_sec_ctx *sec_ctx) 1615 { 1616 return 0; 1617 } 1618 1619 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1620 struct xfrm_sec_ctx *polsec, u32 secid) 1621 { 1622 return 0; 1623 } 1624 1625 static inline void security_xfrm_state_free(struct xfrm_state *x) 1626 { 1627 } 1628 1629 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1630 { 1631 return 0; 1632 } 1633 1634 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1635 { 1636 return 0; 1637 } 1638 1639 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1640 struct xfrm_policy *xp, const struct flowi *fl) 1641 { 1642 return 1; 1643 } 1644 1645 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1646 { 1647 return 0; 1648 } 1649 1650 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1651 { 1652 } 1653 1654 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1655 1656 #ifdef CONFIG_SECURITY_PATH 1657 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1658 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1659 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1660 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1661 unsigned int dev); 1662 int security_path_truncate(const struct path *path); 1663 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1664 const char *old_name); 1665 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1666 struct dentry *new_dentry); 1667 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1668 const struct path *new_dir, struct dentry *new_dentry, 1669 unsigned int flags); 1670 int security_path_chmod(const struct path *path, umode_t mode); 1671 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1672 int security_path_chroot(const struct path *path); 1673 #else /* CONFIG_SECURITY_PATH */ 1674 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1675 { 1676 return 0; 1677 } 1678 1679 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1680 umode_t mode) 1681 { 1682 return 0; 1683 } 1684 1685 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1686 { 1687 return 0; 1688 } 1689 1690 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1691 umode_t mode, unsigned int dev) 1692 { 1693 return 0; 1694 } 1695 1696 static inline int security_path_truncate(const struct path *path) 1697 { 1698 return 0; 1699 } 1700 1701 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1702 const char *old_name) 1703 { 1704 return 0; 1705 } 1706 1707 static inline int security_path_link(struct dentry *old_dentry, 1708 const struct path *new_dir, 1709 struct dentry *new_dentry) 1710 { 1711 return 0; 1712 } 1713 1714 static inline int security_path_rename(const struct path *old_dir, 1715 struct dentry *old_dentry, 1716 const struct path *new_dir, 1717 struct dentry *new_dentry, 1718 unsigned int flags) 1719 { 1720 return 0; 1721 } 1722 1723 static inline int security_path_chmod(const struct path *path, umode_t mode) 1724 { 1725 return 0; 1726 } 1727 1728 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1729 { 1730 return 0; 1731 } 1732 1733 static inline int security_path_chroot(const struct path *path) 1734 { 1735 return 0; 1736 } 1737 #endif /* CONFIG_SECURITY_PATH */ 1738 1739 #ifdef CONFIG_KEYS 1740 #ifdef CONFIG_SECURITY 1741 1742 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1743 void security_key_free(struct key *key); 1744 int security_key_permission(key_ref_t key_ref, 1745 const struct cred *cred, unsigned perm); 1746 int security_key_getsecurity(struct key *key, char **_buffer); 1747 1748 #else 1749 1750 static inline int security_key_alloc(struct key *key, 1751 const struct cred *cred, 1752 unsigned long flags) 1753 { 1754 return 0; 1755 } 1756 1757 static inline void security_key_free(struct key *key) 1758 { 1759 } 1760 1761 static inline int security_key_permission(key_ref_t key_ref, 1762 const struct cred *cred, 1763 unsigned perm) 1764 { 1765 return 0; 1766 } 1767 1768 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1769 { 1770 *_buffer = NULL; 1771 return 0; 1772 } 1773 1774 #endif 1775 #endif /* CONFIG_KEYS */ 1776 1777 #ifdef CONFIG_AUDIT 1778 #ifdef CONFIG_SECURITY 1779 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1780 int security_audit_rule_known(struct audit_krule *krule); 1781 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1782 void security_audit_rule_free(void *lsmrule); 1783 1784 #else 1785 1786 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1787 void **lsmrule) 1788 { 1789 return 0; 1790 } 1791 1792 static inline int security_audit_rule_known(struct audit_krule *krule) 1793 { 1794 return 0; 1795 } 1796 1797 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1798 void *lsmrule) 1799 { 1800 return 0; 1801 } 1802 1803 static inline void security_audit_rule_free(void *lsmrule) 1804 { } 1805 1806 #endif /* CONFIG_SECURITY */ 1807 #endif /* CONFIG_AUDIT */ 1808 1809 #ifdef CONFIG_SECURITYFS 1810 1811 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1812 struct dentry *parent, void *data, 1813 const struct file_operations *fops); 1814 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1815 struct dentry *securityfs_create_symlink(const char *name, 1816 struct dentry *parent, 1817 const char *target, 1818 const struct inode_operations *iops); 1819 extern void securityfs_remove(struct dentry *dentry); 1820 1821 #else /* CONFIG_SECURITYFS */ 1822 1823 static inline struct dentry *securityfs_create_dir(const char *name, 1824 struct dentry *parent) 1825 { 1826 return ERR_PTR(-ENODEV); 1827 } 1828 1829 static inline struct dentry *securityfs_create_file(const char *name, 1830 umode_t mode, 1831 struct dentry *parent, 1832 void *data, 1833 const struct file_operations *fops) 1834 { 1835 return ERR_PTR(-ENODEV); 1836 } 1837 1838 static inline struct dentry *securityfs_create_symlink(const char *name, 1839 struct dentry *parent, 1840 const char *target, 1841 const struct inode_operations *iops) 1842 { 1843 return ERR_PTR(-ENODEV); 1844 } 1845 1846 static inline void securityfs_remove(struct dentry *dentry) 1847 {} 1848 1849 #endif 1850 1851 #ifdef CONFIG_BPF_SYSCALL 1852 union bpf_attr; 1853 struct bpf_map; 1854 struct bpf_prog; 1855 struct bpf_prog_aux; 1856 #ifdef CONFIG_SECURITY 1857 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1858 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1859 extern int security_bpf_prog(struct bpf_prog *prog); 1860 extern int security_bpf_map_alloc(struct bpf_map *map); 1861 extern void security_bpf_map_free(struct bpf_map *map); 1862 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1863 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1864 #else 1865 static inline int security_bpf(int cmd, union bpf_attr *attr, 1866 unsigned int size) 1867 { 1868 return 0; 1869 } 1870 1871 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1872 { 1873 return 0; 1874 } 1875 1876 static inline int security_bpf_prog(struct bpf_prog *prog) 1877 { 1878 return 0; 1879 } 1880 1881 static inline int security_bpf_map_alloc(struct bpf_map *map) 1882 { 1883 return 0; 1884 } 1885 1886 static inline void security_bpf_map_free(struct bpf_map *map) 1887 { } 1888 1889 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1890 { 1891 return 0; 1892 } 1893 1894 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1895 { } 1896 #endif /* CONFIG_SECURITY */ 1897 #endif /* CONFIG_BPF_SYSCALL */ 1898 1899 #endif /* ! __LINUX_SECURITY_H */ 1900 1901