1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/kernel_read_file.h> 27 #include <linux/key.h> 28 #include <linux/capability.h> 29 #include <linux/fs.h> 30 #include <linux/slab.h> 31 #include <linux/err.h> 32 #include <linux/string.h> 33 #include <linux/mm.h> 34 35 struct linux_binprm; 36 struct cred; 37 struct rlimit; 38 struct kernel_siginfo; 39 struct sembuf; 40 struct kern_ipc_perm; 41 struct audit_context; 42 struct super_block; 43 struct inode; 44 struct dentry; 45 struct file; 46 struct vfsmount; 47 struct path; 48 struct qstr; 49 struct iattr; 50 struct fown_struct; 51 struct file_operations; 52 struct msg_msg; 53 struct xattr; 54 struct kernfs_node; 55 struct xfrm_sec_ctx; 56 struct mm_struct; 57 struct fs_context; 58 struct fs_parameter; 59 enum fs_value_type; 60 struct watch; 61 struct watch_notification; 62 63 /* Default (no) options for the capable function */ 64 #define CAP_OPT_NONE 0x0 65 /* If capable should audit the security request */ 66 #define CAP_OPT_NOAUDIT BIT(1) 67 /* If capable is being called by a setid function */ 68 #define CAP_OPT_INSETID BIT(2) 69 70 /* LSM Agnostic defines for fs_context::lsm_flags */ 71 #define SECURITY_LSM_NATIVE_LABELS 1 72 73 struct ctl_table; 74 struct audit_krule; 75 struct user_namespace; 76 struct timezone; 77 78 enum lsm_event { 79 LSM_POLICY_CHANGE, 80 }; 81 82 /* 83 * These are reasons that can be passed to the security_locked_down() 84 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 85 * ability for userland to modify kernel code) are placed before 86 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 87 * confidentiality (ie, the ability for userland to extract 88 * information from the running kernel that would otherwise be 89 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 90 * 91 * LSM authors should note that the semantics of any given lockdown 92 * reason are not guaranteed to be stable - the same reason may block 93 * one set of features in one kernel release, and a slightly different 94 * set of features in a later kernel release. LSMs that seek to expose 95 * lockdown policy at any level of granularity other than "none", 96 * "integrity" or "confidentiality" are responsible for either 97 * ensuring that they expose a consistent level of functionality to 98 * userland, or ensuring that userland is aware that this is 99 * potentially a moving target. It is easy to misuse this information 100 * in a way that could break userspace. Please be careful not to do 101 * so. 102 * 103 * If you add to this, remember to extend lockdown_reasons in 104 * security/lockdown/lockdown.c. 105 */ 106 enum lockdown_reason { 107 LOCKDOWN_NONE, 108 LOCKDOWN_MODULE_SIGNATURE, 109 LOCKDOWN_DEV_MEM, 110 LOCKDOWN_EFI_TEST, 111 LOCKDOWN_KEXEC, 112 LOCKDOWN_HIBERNATION, 113 LOCKDOWN_PCI_ACCESS, 114 LOCKDOWN_IOPORT, 115 LOCKDOWN_MSR, 116 LOCKDOWN_ACPI_TABLES, 117 LOCKDOWN_PCMCIA_CIS, 118 LOCKDOWN_TIOCSSERIAL, 119 LOCKDOWN_MODULE_PARAMETERS, 120 LOCKDOWN_MMIOTRACE, 121 LOCKDOWN_DEBUGFS, 122 LOCKDOWN_XMON_WR, 123 LOCKDOWN_INTEGRITY_MAX, 124 LOCKDOWN_KCORE, 125 LOCKDOWN_KPROBES, 126 LOCKDOWN_BPF_READ, 127 LOCKDOWN_PERF, 128 LOCKDOWN_TRACEFS, 129 LOCKDOWN_XMON_RW, 130 LOCKDOWN_XFRM_SECRET, 131 LOCKDOWN_CONFIDENTIALITY_MAX, 132 }; 133 134 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 135 136 /* These functions are in security/commoncap.c */ 137 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 138 int cap, unsigned int opts); 139 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 140 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 141 extern int cap_ptrace_traceme(struct task_struct *parent); 142 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 143 extern int cap_capset(struct cred *new, const struct cred *old, 144 const kernel_cap_t *effective, 145 const kernel_cap_t *inheritable, 146 const kernel_cap_t *permitted); 147 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 148 int cap_inode_setxattr(struct dentry *dentry, const char *name, 149 const void *value, size_t size, int flags); 150 int cap_inode_removexattr(struct user_namespace *mnt_userns, 151 struct dentry *dentry, const char *name); 152 int cap_inode_need_killpriv(struct dentry *dentry); 153 int cap_inode_killpriv(struct user_namespace *mnt_userns, 154 struct dentry *dentry); 155 int cap_inode_getsecurity(struct user_namespace *mnt_userns, 156 struct inode *inode, const char *name, void **buffer, 157 bool alloc); 158 extern int cap_mmap_addr(unsigned long addr); 159 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 160 unsigned long prot, unsigned long flags); 161 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 162 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 163 unsigned long arg4, unsigned long arg5); 164 extern int cap_task_setscheduler(struct task_struct *p); 165 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 166 extern int cap_task_setnice(struct task_struct *p, int nice); 167 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 168 169 struct msghdr; 170 struct sk_buff; 171 struct sock; 172 struct sockaddr; 173 struct socket; 174 struct flowi_common; 175 struct dst_entry; 176 struct xfrm_selector; 177 struct xfrm_policy; 178 struct xfrm_state; 179 struct xfrm_user_sec_ctx; 180 struct seq_file; 181 struct sctp_endpoint; 182 183 #ifdef CONFIG_MMU 184 extern unsigned long mmap_min_addr; 185 extern unsigned long dac_mmap_min_addr; 186 #else 187 #define mmap_min_addr 0UL 188 #define dac_mmap_min_addr 0UL 189 #endif 190 191 /* 192 * Values used in the task_security_ops calls 193 */ 194 /* setuid or setgid, id0 == uid or gid */ 195 #define LSM_SETID_ID 1 196 197 /* setreuid or setregid, id0 == real, id1 == eff */ 198 #define LSM_SETID_RE 2 199 200 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 201 #define LSM_SETID_RES 4 202 203 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 204 #define LSM_SETID_FS 8 205 206 /* Flags for security_task_prlimit(). */ 207 #define LSM_PRLIMIT_READ 1 208 #define LSM_PRLIMIT_WRITE 2 209 210 /* forward declares to avoid warnings */ 211 struct sched_param; 212 struct request_sock; 213 214 /* bprm->unsafe reasons */ 215 #define LSM_UNSAFE_SHARE 1 216 #define LSM_UNSAFE_PTRACE 2 217 #define LSM_UNSAFE_NO_NEW_PRIVS 4 218 219 #ifdef CONFIG_MMU 220 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 221 void *buffer, size_t *lenp, loff_t *ppos); 222 #endif 223 224 /* security_inode_init_security callback function to write xattrs */ 225 typedef int (*initxattrs) (struct inode *inode, 226 const struct xattr *xattr_array, void *fs_data); 227 228 229 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 230 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 231 #define __data_id_stringify(dummy, str) #str, 232 233 enum kernel_load_data_id { 234 __kernel_read_file_id(__data_id_enumify) 235 }; 236 237 static const char * const kernel_load_data_str[] = { 238 __kernel_read_file_id(__data_id_stringify) 239 }; 240 241 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 242 { 243 if ((unsigned)id >= LOADING_MAX_ID) 244 return kernel_load_data_str[LOADING_UNKNOWN]; 245 246 return kernel_load_data_str[id]; 247 } 248 249 #ifdef CONFIG_SECURITY 250 251 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 252 int register_blocking_lsm_notifier(struct notifier_block *nb); 253 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 254 255 /* prototypes */ 256 extern int security_init(void); 257 extern int early_security_init(void); 258 259 /* Security operations */ 260 int security_binder_set_context_mgr(struct task_struct *mgr); 261 int security_binder_transaction(struct task_struct *from, 262 struct task_struct *to); 263 int security_binder_transfer_binder(struct task_struct *from, 264 struct task_struct *to); 265 int security_binder_transfer_file(struct task_struct *from, 266 struct task_struct *to, struct file *file); 267 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 268 int security_ptrace_traceme(struct task_struct *parent); 269 int security_capget(struct task_struct *target, 270 kernel_cap_t *effective, 271 kernel_cap_t *inheritable, 272 kernel_cap_t *permitted); 273 int security_capset(struct cred *new, const struct cred *old, 274 const kernel_cap_t *effective, 275 const kernel_cap_t *inheritable, 276 const kernel_cap_t *permitted); 277 int security_capable(const struct cred *cred, 278 struct user_namespace *ns, 279 int cap, 280 unsigned int opts); 281 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 282 int security_quota_on(struct dentry *dentry); 283 int security_syslog(int type); 284 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 285 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 286 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 287 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 288 int security_bprm_check(struct linux_binprm *bprm); 289 void security_bprm_committing_creds(struct linux_binprm *bprm); 290 void security_bprm_committed_creds(struct linux_binprm *bprm); 291 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 292 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 293 int security_sb_alloc(struct super_block *sb); 294 void security_sb_delete(struct super_block *sb); 295 void security_sb_free(struct super_block *sb); 296 void security_free_mnt_opts(void **mnt_opts); 297 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 298 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); 299 int security_sb_remount(struct super_block *sb, void *mnt_opts); 300 int security_sb_kern_mount(struct super_block *sb); 301 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 302 int security_sb_statfs(struct dentry *dentry); 303 int security_sb_mount(const char *dev_name, const struct path *path, 304 const char *type, unsigned long flags, void *data); 305 int security_sb_umount(struct vfsmount *mnt, int flags); 306 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 307 int security_sb_set_mnt_opts(struct super_block *sb, 308 void *mnt_opts, 309 unsigned long kern_flags, 310 unsigned long *set_kern_flags); 311 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 312 struct super_block *newsb, 313 unsigned long kern_flags, 314 unsigned long *set_kern_flags); 315 int security_add_mnt_opt(const char *option, const char *val, 316 int len, void **mnt_opts); 317 int security_move_mount(const struct path *from_path, const struct path *to_path); 318 int security_dentry_init_security(struct dentry *dentry, int mode, 319 const struct qstr *name, void **ctx, 320 u32 *ctxlen); 321 int security_dentry_create_files_as(struct dentry *dentry, int mode, 322 struct qstr *name, 323 const struct cred *old, 324 struct cred *new); 325 int security_path_notify(const struct path *path, u64 mask, 326 unsigned int obj_type); 327 int security_inode_alloc(struct inode *inode); 328 void security_inode_free(struct inode *inode); 329 int security_inode_init_security(struct inode *inode, struct inode *dir, 330 const struct qstr *qstr, 331 initxattrs initxattrs, void *fs_data); 332 int security_inode_init_security_anon(struct inode *inode, 333 const struct qstr *name, 334 const struct inode *context_inode); 335 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 336 const struct qstr *qstr, const char **name, 337 void **value, size_t *len); 338 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 339 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 340 struct dentry *new_dentry); 341 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 342 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 343 const char *old_name); 344 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 345 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 346 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 347 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 348 struct inode *new_dir, struct dentry *new_dentry, 349 unsigned int flags); 350 int security_inode_readlink(struct dentry *dentry); 351 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 352 bool rcu); 353 int security_inode_permission(struct inode *inode, int mask); 354 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 355 int security_inode_getattr(const struct path *path); 356 int security_inode_setxattr(struct user_namespace *mnt_userns, 357 struct dentry *dentry, const char *name, 358 const void *value, size_t size, int flags); 359 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 360 const void *value, size_t size, int flags); 361 int security_inode_getxattr(struct dentry *dentry, const char *name); 362 int security_inode_listxattr(struct dentry *dentry); 363 int security_inode_removexattr(struct user_namespace *mnt_userns, 364 struct dentry *dentry, const char *name); 365 int security_inode_need_killpriv(struct dentry *dentry); 366 int security_inode_killpriv(struct user_namespace *mnt_userns, 367 struct dentry *dentry); 368 int security_inode_getsecurity(struct user_namespace *mnt_userns, 369 struct inode *inode, const char *name, 370 void **buffer, bool alloc); 371 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 372 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 373 void security_inode_getsecid(struct inode *inode, u32 *secid); 374 int security_inode_copy_up(struct dentry *src, struct cred **new); 375 int security_inode_copy_up_xattr(const char *name); 376 int security_kernfs_init_security(struct kernfs_node *kn_dir, 377 struct kernfs_node *kn); 378 int security_file_permission(struct file *file, int mask); 379 int security_file_alloc(struct file *file); 380 void security_file_free(struct file *file); 381 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 382 int security_mmap_file(struct file *file, unsigned long prot, 383 unsigned long flags); 384 int security_mmap_addr(unsigned long addr); 385 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 386 unsigned long prot); 387 int security_file_lock(struct file *file, unsigned int cmd); 388 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 389 void security_file_set_fowner(struct file *file); 390 int security_file_send_sigiotask(struct task_struct *tsk, 391 struct fown_struct *fown, int sig); 392 int security_file_receive(struct file *file); 393 int security_file_open(struct file *file); 394 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 395 void security_task_free(struct task_struct *task); 396 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 397 void security_cred_free(struct cred *cred); 398 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 399 void security_transfer_creds(struct cred *new, const struct cred *old); 400 void security_cred_getsecid(const struct cred *c, u32 *secid); 401 int security_kernel_act_as(struct cred *new, u32 secid); 402 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 403 int security_kernel_module_request(char *kmod_name); 404 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 405 int security_kernel_post_load_data(char *buf, loff_t size, 406 enum kernel_load_data_id id, 407 char *description); 408 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 409 bool contents); 410 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 411 enum kernel_read_file_id id); 412 int security_task_fix_setuid(struct cred *new, const struct cred *old, 413 int flags); 414 int security_task_fix_setgid(struct cred *new, const struct cred *old, 415 int flags); 416 int security_task_setpgid(struct task_struct *p, pid_t pgid); 417 int security_task_getpgid(struct task_struct *p); 418 int security_task_getsid(struct task_struct *p); 419 void security_task_getsecid_subj(struct task_struct *p, u32 *secid); 420 void security_task_getsecid_obj(struct task_struct *p, u32 *secid); 421 int security_task_setnice(struct task_struct *p, int nice); 422 int security_task_setioprio(struct task_struct *p, int ioprio); 423 int security_task_getioprio(struct task_struct *p); 424 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 425 unsigned int flags); 426 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 427 struct rlimit *new_rlim); 428 int security_task_setscheduler(struct task_struct *p); 429 int security_task_getscheduler(struct task_struct *p); 430 int security_task_movememory(struct task_struct *p); 431 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 432 int sig, const struct cred *cred); 433 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 434 unsigned long arg4, unsigned long arg5); 435 void security_task_to_inode(struct task_struct *p, struct inode *inode); 436 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 437 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 438 int security_msg_msg_alloc(struct msg_msg *msg); 439 void security_msg_msg_free(struct msg_msg *msg); 440 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 441 void security_msg_queue_free(struct kern_ipc_perm *msq); 442 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 443 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 444 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 445 struct msg_msg *msg, int msqflg); 446 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 447 struct task_struct *target, long type, int mode); 448 int security_shm_alloc(struct kern_ipc_perm *shp); 449 void security_shm_free(struct kern_ipc_perm *shp); 450 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 451 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 452 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 453 int security_sem_alloc(struct kern_ipc_perm *sma); 454 void security_sem_free(struct kern_ipc_perm *sma); 455 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 456 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 457 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 458 unsigned nsops, int alter); 459 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 460 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 461 char **value); 462 int security_setprocattr(const char *lsm, const char *name, void *value, 463 size_t size); 464 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 465 int security_ismaclabel(const char *name); 466 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 467 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 468 void security_release_secctx(char *secdata, u32 seclen); 469 void security_inode_invalidate_secctx(struct inode *inode); 470 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 471 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 472 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 473 int security_locked_down(enum lockdown_reason what); 474 #else /* CONFIG_SECURITY */ 475 476 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 477 { 478 return 0; 479 } 480 481 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 482 { 483 return 0; 484 } 485 486 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 487 { 488 return 0; 489 } 490 491 static inline void security_free_mnt_opts(void **mnt_opts) 492 { 493 } 494 495 /* 496 * This is the default capabilities functionality. Most of these functions 497 * are just stubbed out, but a few must call the proper capable code. 498 */ 499 500 static inline int security_init(void) 501 { 502 return 0; 503 } 504 505 static inline int early_security_init(void) 506 { 507 return 0; 508 } 509 510 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 511 { 512 return 0; 513 } 514 515 static inline int security_binder_transaction(struct task_struct *from, 516 struct task_struct *to) 517 { 518 return 0; 519 } 520 521 static inline int security_binder_transfer_binder(struct task_struct *from, 522 struct task_struct *to) 523 { 524 return 0; 525 } 526 527 static inline int security_binder_transfer_file(struct task_struct *from, 528 struct task_struct *to, 529 struct file *file) 530 { 531 return 0; 532 } 533 534 static inline int security_ptrace_access_check(struct task_struct *child, 535 unsigned int mode) 536 { 537 return cap_ptrace_access_check(child, mode); 538 } 539 540 static inline int security_ptrace_traceme(struct task_struct *parent) 541 { 542 return cap_ptrace_traceme(parent); 543 } 544 545 static inline int security_capget(struct task_struct *target, 546 kernel_cap_t *effective, 547 kernel_cap_t *inheritable, 548 kernel_cap_t *permitted) 549 { 550 return cap_capget(target, effective, inheritable, permitted); 551 } 552 553 static inline int security_capset(struct cred *new, 554 const struct cred *old, 555 const kernel_cap_t *effective, 556 const kernel_cap_t *inheritable, 557 const kernel_cap_t *permitted) 558 { 559 return cap_capset(new, old, effective, inheritable, permitted); 560 } 561 562 static inline int security_capable(const struct cred *cred, 563 struct user_namespace *ns, 564 int cap, 565 unsigned int opts) 566 { 567 return cap_capable(cred, ns, cap, opts); 568 } 569 570 static inline int security_quotactl(int cmds, int type, int id, 571 struct super_block *sb) 572 { 573 return 0; 574 } 575 576 static inline int security_quota_on(struct dentry *dentry) 577 { 578 return 0; 579 } 580 581 static inline int security_syslog(int type) 582 { 583 return 0; 584 } 585 586 static inline int security_settime64(const struct timespec64 *ts, 587 const struct timezone *tz) 588 { 589 return cap_settime(ts, tz); 590 } 591 592 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 593 { 594 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 595 } 596 597 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 598 { 599 return 0; 600 } 601 602 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 603 struct file *file) 604 { 605 return cap_bprm_creds_from_file(bprm, file); 606 } 607 608 static inline int security_bprm_check(struct linux_binprm *bprm) 609 { 610 return 0; 611 } 612 613 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 614 { 615 } 616 617 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 618 { 619 } 620 621 static inline int security_fs_context_dup(struct fs_context *fc, 622 struct fs_context *src_fc) 623 { 624 return 0; 625 } 626 static inline int security_fs_context_parse_param(struct fs_context *fc, 627 struct fs_parameter *param) 628 { 629 return -ENOPARAM; 630 } 631 632 static inline int security_sb_alloc(struct super_block *sb) 633 { 634 return 0; 635 } 636 637 static inline void security_sb_delete(struct super_block *sb) 638 { } 639 640 static inline void security_sb_free(struct super_block *sb) 641 { } 642 643 static inline int security_sb_eat_lsm_opts(char *options, 644 void **mnt_opts) 645 { 646 return 0; 647 } 648 649 static inline int security_sb_remount(struct super_block *sb, 650 void *mnt_opts) 651 { 652 return 0; 653 } 654 655 static inline int security_sb_mnt_opts_compat(struct super_block *sb, 656 void *mnt_opts) 657 { 658 return 0; 659 } 660 661 662 static inline int security_sb_kern_mount(struct super_block *sb) 663 { 664 return 0; 665 } 666 667 static inline int security_sb_show_options(struct seq_file *m, 668 struct super_block *sb) 669 { 670 return 0; 671 } 672 673 static inline int security_sb_statfs(struct dentry *dentry) 674 { 675 return 0; 676 } 677 678 static inline int security_sb_mount(const char *dev_name, const struct path *path, 679 const char *type, unsigned long flags, 680 void *data) 681 { 682 return 0; 683 } 684 685 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 686 { 687 return 0; 688 } 689 690 static inline int security_sb_pivotroot(const struct path *old_path, 691 const struct path *new_path) 692 { 693 return 0; 694 } 695 696 static inline int security_sb_set_mnt_opts(struct super_block *sb, 697 void *mnt_opts, 698 unsigned long kern_flags, 699 unsigned long *set_kern_flags) 700 { 701 return 0; 702 } 703 704 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 705 struct super_block *newsb, 706 unsigned long kern_flags, 707 unsigned long *set_kern_flags) 708 { 709 return 0; 710 } 711 712 static inline int security_add_mnt_opt(const char *option, const char *val, 713 int len, void **mnt_opts) 714 { 715 return 0; 716 } 717 718 static inline int security_move_mount(const struct path *from_path, 719 const struct path *to_path) 720 { 721 return 0; 722 } 723 724 static inline int security_path_notify(const struct path *path, u64 mask, 725 unsigned int obj_type) 726 { 727 return 0; 728 } 729 730 static inline int security_inode_alloc(struct inode *inode) 731 { 732 return 0; 733 } 734 735 static inline void security_inode_free(struct inode *inode) 736 { } 737 738 static inline int security_dentry_init_security(struct dentry *dentry, 739 int mode, 740 const struct qstr *name, 741 void **ctx, 742 u32 *ctxlen) 743 { 744 return -EOPNOTSUPP; 745 } 746 747 static inline int security_dentry_create_files_as(struct dentry *dentry, 748 int mode, struct qstr *name, 749 const struct cred *old, 750 struct cred *new) 751 { 752 return 0; 753 } 754 755 756 static inline int security_inode_init_security(struct inode *inode, 757 struct inode *dir, 758 const struct qstr *qstr, 759 const initxattrs xattrs, 760 void *fs_data) 761 { 762 return 0; 763 } 764 765 static inline int security_inode_init_security_anon(struct inode *inode, 766 const struct qstr *name, 767 const struct inode *context_inode) 768 { 769 return 0; 770 } 771 772 static inline int security_old_inode_init_security(struct inode *inode, 773 struct inode *dir, 774 const struct qstr *qstr, 775 const char **name, 776 void **value, size_t *len) 777 { 778 return -EOPNOTSUPP; 779 } 780 781 static inline int security_inode_create(struct inode *dir, 782 struct dentry *dentry, 783 umode_t mode) 784 { 785 return 0; 786 } 787 788 static inline int security_inode_link(struct dentry *old_dentry, 789 struct inode *dir, 790 struct dentry *new_dentry) 791 { 792 return 0; 793 } 794 795 static inline int security_inode_unlink(struct inode *dir, 796 struct dentry *dentry) 797 { 798 return 0; 799 } 800 801 static inline int security_inode_symlink(struct inode *dir, 802 struct dentry *dentry, 803 const char *old_name) 804 { 805 return 0; 806 } 807 808 static inline int security_inode_mkdir(struct inode *dir, 809 struct dentry *dentry, 810 int mode) 811 { 812 return 0; 813 } 814 815 static inline int security_inode_rmdir(struct inode *dir, 816 struct dentry *dentry) 817 { 818 return 0; 819 } 820 821 static inline int security_inode_mknod(struct inode *dir, 822 struct dentry *dentry, 823 int mode, dev_t dev) 824 { 825 return 0; 826 } 827 828 static inline int security_inode_rename(struct inode *old_dir, 829 struct dentry *old_dentry, 830 struct inode *new_dir, 831 struct dentry *new_dentry, 832 unsigned int flags) 833 { 834 return 0; 835 } 836 837 static inline int security_inode_readlink(struct dentry *dentry) 838 { 839 return 0; 840 } 841 842 static inline int security_inode_follow_link(struct dentry *dentry, 843 struct inode *inode, 844 bool rcu) 845 { 846 return 0; 847 } 848 849 static inline int security_inode_permission(struct inode *inode, int mask) 850 { 851 return 0; 852 } 853 854 static inline int security_inode_setattr(struct dentry *dentry, 855 struct iattr *attr) 856 { 857 return 0; 858 } 859 860 static inline int security_inode_getattr(const struct path *path) 861 { 862 return 0; 863 } 864 865 static inline int security_inode_setxattr(struct user_namespace *mnt_userns, 866 struct dentry *dentry, const char *name, const void *value, 867 size_t size, int flags) 868 { 869 return cap_inode_setxattr(dentry, name, value, size, flags); 870 } 871 872 static inline void security_inode_post_setxattr(struct dentry *dentry, 873 const char *name, const void *value, size_t size, int flags) 874 { } 875 876 static inline int security_inode_getxattr(struct dentry *dentry, 877 const char *name) 878 { 879 return 0; 880 } 881 882 static inline int security_inode_listxattr(struct dentry *dentry) 883 { 884 return 0; 885 } 886 887 static inline int security_inode_removexattr(struct user_namespace *mnt_userns, 888 struct dentry *dentry, 889 const char *name) 890 { 891 return cap_inode_removexattr(mnt_userns, dentry, name); 892 } 893 894 static inline int security_inode_need_killpriv(struct dentry *dentry) 895 { 896 return cap_inode_need_killpriv(dentry); 897 } 898 899 static inline int security_inode_killpriv(struct user_namespace *mnt_userns, 900 struct dentry *dentry) 901 { 902 return cap_inode_killpriv(mnt_userns, dentry); 903 } 904 905 static inline int security_inode_getsecurity(struct user_namespace *mnt_userns, 906 struct inode *inode, 907 const char *name, void **buffer, 908 bool alloc) 909 { 910 return cap_inode_getsecurity(mnt_userns, inode, name, buffer, alloc); 911 } 912 913 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 914 { 915 return -EOPNOTSUPP; 916 } 917 918 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 919 { 920 return 0; 921 } 922 923 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 924 { 925 *secid = 0; 926 } 927 928 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 929 { 930 return 0; 931 } 932 933 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 934 struct kernfs_node *kn) 935 { 936 return 0; 937 } 938 939 static inline int security_inode_copy_up_xattr(const char *name) 940 { 941 return -EOPNOTSUPP; 942 } 943 944 static inline int security_file_permission(struct file *file, int mask) 945 { 946 return 0; 947 } 948 949 static inline int security_file_alloc(struct file *file) 950 { 951 return 0; 952 } 953 954 static inline void security_file_free(struct file *file) 955 { } 956 957 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 958 unsigned long arg) 959 { 960 return 0; 961 } 962 963 static inline int security_mmap_file(struct file *file, unsigned long prot, 964 unsigned long flags) 965 { 966 return 0; 967 } 968 969 static inline int security_mmap_addr(unsigned long addr) 970 { 971 return cap_mmap_addr(addr); 972 } 973 974 static inline int security_file_mprotect(struct vm_area_struct *vma, 975 unsigned long reqprot, 976 unsigned long prot) 977 { 978 return 0; 979 } 980 981 static inline int security_file_lock(struct file *file, unsigned int cmd) 982 { 983 return 0; 984 } 985 986 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 987 unsigned long arg) 988 { 989 return 0; 990 } 991 992 static inline void security_file_set_fowner(struct file *file) 993 { 994 return; 995 } 996 997 static inline int security_file_send_sigiotask(struct task_struct *tsk, 998 struct fown_struct *fown, 999 int sig) 1000 { 1001 return 0; 1002 } 1003 1004 static inline int security_file_receive(struct file *file) 1005 { 1006 return 0; 1007 } 1008 1009 static inline int security_file_open(struct file *file) 1010 { 1011 return 0; 1012 } 1013 1014 static inline int security_task_alloc(struct task_struct *task, 1015 unsigned long clone_flags) 1016 { 1017 return 0; 1018 } 1019 1020 static inline void security_task_free(struct task_struct *task) 1021 { } 1022 1023 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1024 { 1025 return 0; 1026 } 1027 1028 static inline void security_cred_free(struct cred *cred) 1029 { } 1030 1031 static inline int security_prepare_creds(struct cred *new, 1032 const struct cred *old, 1033 gfp_t gfp) 1034 { 1035 return 0; 1036 } 1037 1038 static inline void security_transfer_creds(struct cred *new, 1039 const struct cred *old) 1040 { 1041 } 1042 1043 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1044 { 1045 return 0; 1046 } 1047 1048 static inline int security_kernel_create_files_as(struct cred *cred, 1049 struct inode *inode) 1050 { 1051 return 0; 1052 } 1053 1054 static inline int security_kernel_module_request(char *kmod_name) 1055 { 1056 return 0; 1057 } 1058 1059 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1060 { 1061 return 0; 1062 } 1063 1064 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1065 enum kernel_load_data_id id, 1066 char *description) 1067 { 1068 return 0; 1069 } 1070 1071 static inline int security_kernel_read_file(struct file *file, 1072 enum kernel_read_file_id id, 1073 bool contents) 1074 { 1075 return 0; 1076 } 1077 1078 static inline int security_kernel_post_read_file(struct file *file, 1079 char *buf, loff_t size, 1080 enum kernel_read_file_id id) 1081 { 1082 return 0; 1083 } 1084 1085 static inline int security_task_fix_setuid(struct cred *new, 1086 const struct cred *old, 1087 int flags) 1088 { 1089 return cap_task_fix_setuid(new, old, flags); 1090 } 1091 1092 static inline int security_task_fix_setgid(struct cred *new, 1093 const struct cred *old, 1094 int flags) 1095 { 1096 return 0; 1097 } 1098 1099 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1100 { 1101 return 0; 1102 } 1103 1104 static inline int security_task_getpgid(struct task_struct *p) 1105 { 1106 return 0; 1107 } 1108 1109 static inline int security_task_getsid(struct task_struct *p) 1110 { 1111 return 0; 1112 } 1113 1114 static inline void security_task_getsecid_subj(struct task_struct *p, u32 *secid) 1115 { 1116 *secid = 0; 1117 } 1118 1119 static inline void security_task_getsecid_obj(struct task_struct *p, u32 *secid) 1120 { 1121 *secid = 0; 1122 } 1123 1124 static inline int security_task_setnice(struct task_struct *p, int nice) 1125 { 1126 return cap_task_setnice(p, nice); 1127 } 1128 1129 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1130 { 1131 return cap_task_setioprio(p, ioprio); 1132 } 1133 1134 static inline int security_task_getioprio(struct task_struct *p) 1135 { 1136 return 0; 1137 } 1138 1139 static inline int security_task_prlimit(const struct cred *cred, 1140 const struct cred *tcred, 1141 unsigned int flags) 1142 { 1143 return 0; 1144 } 1145 1146 static inline int security_task_setrlimit(struct task_struct *p, 1147 unsigned int resource, 1148 struct rlimit *new_rlim) 1149 { 1150 return 0; 1151 } 1152 1153 static inline int security_task_setscheduler(struct task_struct *p) 1154 { 1155 return cap_task_setscheduler(p); 1156 } 1157 1158 static inline int security_task_getscheduler(struct task_struct *p) 1159 { 1160 return 0; 1161 } 1162 1163 static inline int security_task_movememory(struct task_struct *p) 1164 { 1165 return 0; 1166 } 1167 1168 static inline int security_task_kill(struct task_struct *p, 1169 struct kernel_siginfo *info, int sig, 1170 const struct cred *cred) 1171 { 1172 return 0; 1173 } 1174 1175 static inline int security_task_prctl(int option, unsigned long arg2, 1176 unsigned long arg3, 1177 unsigned long arg4, 1178 unsigned long arg5) 1179 { 1180 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1181 } 1182 1183 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1184 { } 1185 1186 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1187 short flag) 1188 { 1189 return 0; 1190 } 1191 1192 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1193 { 1194 *secid = 0; 1195 } 1196 1197 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1198 { 1199 return 0; 1200 } 1201 1202 static inline void security_msg_msg_free(struct msg_msg *msg) 1203 { } 1204 1205 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1206 { 1207 return 0; 1208 } 1209 1210 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1211 { } 1212 1213 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1214 int msqflg) 1215 { 1216 return 0; 1217 } 1218 1219 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1220 { 1221 return 0; 1222 } 1223 1224 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1225 struct msg_msg *msg, int msqflg) 1226 { 1227 return 0; 1228 } 1229 1230 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1231 struct msg_msg *msg, 1232 struct task_struct *target, 1233 long type, int mode) 1234 { 1235 return 0; 1236 } 1237 1238 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1239 { 1240 return 0; 1241 } 1242 1243 static inline void security_shm_free(struct kern_ipc_perm *shp) 1244 { } 1245 1246 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1247 int shmflg) 1248 { 1249 return 0; 1250 } 1251 1252 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1253 { 1254 return 0; 1255 } 1256 1257 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1258 char __user *shmaddr, int shmflg) 1259 { 1260 return 0; 1261 } 1262 1263 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1264 { 1265 return 0; 1266 } 1267 1268 static inline void security_sem_free(struct kern_ipc_perm *sma) 1269 { } 1270 1271 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1272 { 1273 return 0; 1274 } 1275 1276 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1277 { 1278 return 0; 1279 } 1280 1281 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1282 struct sembuf *sops, unsigned nsops, 1283 int alter) 1284 { 1285 return 0; 1286 } 1287 1288 static inline void security_d_instantiate(struct dentry *dentry, 1289 struct inode *inode) 1290 { } 1291 1292 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1293 char *name, char **value) 1294 { 1295 return -EINVAL; 1296 } 1297 1298 static inline int security_setprocattr(const char *lsm, char *name, 1299 void *value, size_t size) 1300 { 1301 return -EINVAL; 1302 } 1303 1304 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1305 { 1306 return 0; 1307 } 1308 1309 static inline int security_ismaclabel(const char *name) 1310 { 1311 return 0; 1312 } 1313 1314 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1315 { 1316 return -EOPNOTSUPP; 1317 } 1318 1319 static inline int security_secctx_to_secid(const char *secdata, 1320 u32 seclen, 1321 u32 *secid) 1322 { 1323 return -EOPNOTSUPP; 1324 } 1325 1326 static inline void security_release_secctx(char *secdata, u32 seclen) 1327 { 1328 } 1329 1330 static inline void security_inode_invalidate_secctx(struct inode *inode) 1331 { 1332 } 1333 1334 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1335 { 1336 return -EOPNOTSUPP; 1337 } 1338 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1339 { 1340 return -EOPNOTSUPP; 1341 } 1342 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1343 { 1344 return -EOPNOTSUPP; 1345 } 1346 static inline int security_locked_down(enum lockdown_reason what) 1347 { 1348 return 0; 1349 } 1350 #endif /* CONFIG_SECURITY */ 1351 1352 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1353 int security_post_notification(const struct cred *w_cred, 1354 const struct cred *cred, 1355 struct watch_notification *n); 1356 #else 1357 static inline int security_post_notification(const struct cred *w_cred, 1358 const struct cred *cred, 1359 struct watch_notification *n) 1360 { 1361 return 0; 1362 } 1363 #endif 1364 1365 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1366 int security_watch_key(struct key *key); 1367 #else 1368 static inline int security_watch_key(struct key *key) 1369 { 1370 return 0; 1371 } 1372 #endif 1373 1374 #ifdef CONFIG_SECURITY_NETWORK 1375 1376 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1377 int security_unix_may_send(struct socket *sock, struct socket *other); 1378 int security_socket_create(int family, int type, int protocol, int kern); 1379 int security_socket_post_create(struct socket *sock, int family, 1380 int type, int protocol, int kern); 1381 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1382 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1383 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1384 int security_socket_listen(struct socket *sock, int backlog); 1385 int security_socket_accept(struct socket *sock, struct socket *newsock); 1386 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1387 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1388 int size, int flags); 1389 int security_socket_getsockname(struct socket *sock); 1390 int security_socket_getpeername(struct socket *sock); 1391 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1392 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1393 int security_socket_shutdown(struct socket *sock, int how); 1394 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1395 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1396 int __user *optlen, unsigned len); 1397 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1398 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1399 void security_sk_free(struct sock *sk); 1400 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1401 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic); 1402 void security_req_classify_flow(const struct request_sock *req, 1403 struct flowi_common *flic); 1404 void security_sock_graft(struct sock*sk, struct socket *parent); 1405 int security_inet_conn_request(const struct sock *sk, 1406 struct sk_buff *skb, struct request_sock *req); 1407 void security_inet_csk_clone(struct sock *newsk, 1408 const struct request_sock *req); 1409 void security_inet_conn_established(struct sock *sk, 1410 struct sk_buff *skb); 1411 int security_secmark_relabel_packet(u32 secid); 1412 void security_secmark_refcount_inc(void); 1413 void security_secmark_refcount_dec(void); 1414 int security_tun_dev_alloc_security(void **security); 1415 void security_tun_dev_free_security(void *security); 1416 int security_tun_dev_create(void); 1417 int security_tun_dev_attach_queue(void *security); 1418 int security_tun_dev_attach(struct sock *sk, void *security); 1419 int security_tun_dev_open(void *security); 1420 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1421 int security_sctp_bind_connect(struct sock *sk, int optname, 1422 struct sockaddr *address, int addrlen); 1423 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1424 struct sock *newsk); 1425 1426 #else /* CONFIG_SECURITY_NETWORK */ 1427 static inline int security_unix_stream_connect(struct sock *sock, 1428 struct sock *other, 1429 struct sock *newsk) 1430 { 1431 return 0; 1432 } 1433 1434 static inline int security_unix_may_send(struct socket *sock, 1435 struct socket *other) 1436 { 1437 return 0; 1438 } 1439 1440 static inline int security_socket_create(int family, int type, 1441 int protocol, int kern) 1442 { 1443 return 0; 1444 } 1445 1446 static inline int security_socket_post_create(struct socket *sock, 1447 int family, 1448 int type, 1449 int protocol, int kern) 1450 { 1451 return 0; 1452 } 1453 1454 static inline int security_socket_socketpair(struct socket *socka, 1455 struct socket *sockb) 1456 { 1457 return 0; 1458 } 1459 1460 static inline int security_socket_bind(struct socket *sock, 1461 struct sockaddr *address, 1462 int addrlen) 1463 { 1464 return 0; 1465 } 1466 1467 static inline int security_socket_connect(struct socket *sock, 1468 struct sockaddr *address, 1469 int addrlen) 1470 { 1471 return 0; 1472 } 1473 1474 static inline int security_socket_listen(struct socket *sock, int backlog) 1475 { 1476 return 0; 1477 } 1478 1479 static inline int security_socket_accept(struct socket *sock, 1480 struct socket *newsock) 1481 { 1482 return 0; 1483 } 1484 1485 static inline int security_socket_sendmsg(struct socket *sock, 1486 struct msghdr *msg, int size) 1487 { 1488 return 0; 1489 } 1490 1491 static inline int security_socket_recvmsg(struct socket *sock, 1492 struct msghdr *msg, int size, 1493 int flags) 1494 { 1495 return 0; 1496 } 1497 1498 static inline int security_socket_getsockname(struct socket *sock) 1499 { 1500 return 0; 1501 } 1502 1503 static inline int security_socket_getpeername(struct socket *sock) 1504 { 1505 return 0; 1506 } 1507 1508 static inline int security_socket_getsockopt(struct socket *sock, 1509 int level, int optname) 1510 { 1511 return 0; 1512 } 1513 1514 static inline int security_socket_setsockopt(struct socket *sock, 1515 int level, int optname) 1516 { 1517 return 0; 1518 } 1519 1520 static inline int security_socket_shutdown(struct socket *sock, int how) 1521 { 1522 return 0; 1523 } 1524 static inline int security_sock_rcv_skb(struct sock *sk, 1525 struct sk_buff *skb) 1526 { 1527 return 0; 1528 } 1529 1530 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1531 int __user *optlen, unsigned len) 1532 { 1533 return -ENOPROTOOPT; 1534 } 1535 1536 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1537 { 1538 return -ENOPROTOOPT; 1539 } 1540 1541 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1542 { 1543 return 0; 1544 } 1545 1546 static inline void security_sk_free(struct sock *sk) 1547 { 1548 } 1549 1550 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1551 { 1552 } 1553 1554 static inline void security_sk_classify_flow(struct sock *sk, 1555 struct flowi_common *flic) 1556 { 1557 } 1558 1559 static inline void security_req_classify_flow(const struct request_sock *req, 1560 struct flowi_common *flic) 1561 { 1562 } 1563 1564 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1565 { 1566 } 1567 1568 static inline int security_inet_conn_request(const struct sock *sk, 1569 struct sk_buff *skb, struct request_sock *req) 1570 { 1571 return 0; 1572 } 1573 1574 static inline void security_inet_csk_clone(struct sock *newsk, 1575 const struct request_sock *req) 1576 { 1577 } 1578 1579 static inline void security_inet_conn_established(struct sock *sk, 1580 struct sk_buff *skb) 1581 { 1582 } 1583 1584 static inline int security_secmark_relabel_packet(u32 secid) 1585 { 1586 return 0; 1587 } 1588 1589 static inline void security_secmark_refcount_inc(void) 1590 { 1591 } 1592 1593 static inline void security_secmark_refcount_dec(void) 1594 { 1595 } 1596 1597 static inline int security_tun_dev_alloc_security(void **security) 1598 { 1599 return 0; 1600 } 1601 1602 static inline void security_tun_dev_free_security(void *security) 1603 { 1604 } 1605 1606 static inline int security_tun_dev_create(void) 1607 { 1608 return 0; 1609 } 1610 1611 static inline int security_tun_dev_attach_queue(void *security) 1612 { 1613 return 0; 1614 } 1615 1616 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1617 { 1618 return 0; 1619 } 1620 1621 static inline int security_tun_dev_open(void *security) 1622 { 1623 return 0; 1624 } 1625 1626 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1627 struct sk_buff *skb) 1628 { 1629 return 0; 1630 } 1631 1632 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1633 struct sockaddr *address, 1634 int addrlen) 1635 { 1636 return 0; 1637 } 1638 1639 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1640 struct sock *sk, 1641 struct sock *newsk) 1642 { 1643 } 1644 #endif /* CONFIG_SECURITY_NETWORK */ 1645 1646 #ifdef CONFIG_SECURITY_INFINIBAND 1647 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1648 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1649 int security_ib_alloc_security(void **sec); 1650 void security_ib_free_security(void *sec); 1651 #else /* CONFIG_SECURITY_INFINIBAND */ 1652 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1653 { 1654 return 0; 1655 } 1656 1657 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1658 { 1659 return 0; 1660 } 1661 1662 static inline int security_ib_alloc_security(void **sec) 1663 { 1664 return 0; 1665 } 1666 1667 static inline void security_ib_free_security(void *sec) 1668 { 1669 } 1670 #endif /* CONFIG_SECURITY_INFINIBAND */ 1671 1672 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1673 1674 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1675 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1676 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1677 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1678 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1679 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1680 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1681 struct xfrm_sec_ctx *polsec, u32 secid); 1682 int security_xfrm_state_delete(struct xfrm_state *x); 1683 void security_xfrm_state_free(struct xfrm_state *x); 1684 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 1685 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1686 struct xfrm_policy *xp, 1687 const struct flowi_common *flic); 1688 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1689 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1690 1691 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1692 1693 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1694 struct xfrm_user_sec_ctx *sec_ctx, 1695 gfp_t gfp) 1696 { 1697 return 0; 1698 } 1699 1700 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1701 { 1702 return 0; 1703 } 1704 1705 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1706 { 1707 } 1708 1709 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1710 { 1711 return 0; 1712 } 1713 1714 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1715 struct xfrm_user_sec_ctx *sec_ctx) 1716 { 1717 return 0; 1718 } 1719 1720 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1721 struct xfrm_sec_ctx *polsec, u32 secid) 1722 { 1723 return 0; 1724 } 1725 1726 static inline void security_xfrm_state_free(struct xfrm_state *x) 1727 { 1728 } 1729 1730 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1731 { 1732 return 0; 1733 } 1734 1735 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1736 { 1737 return 0; 1738 } 1739 1740 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1741 struct xfrm_policy *xp, 1742 const struct flowi_common *flic) 1743 { 1744 return 1; 1745 } 1746 1747 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1748 { 1749 return 0; 1750 } 1751 1752 static inline void security_skb_classify_flow(struct sk_buff *skb, 1753 struct flowi_common *flic) 1754 { 1755 } 1756 1757 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1758 1759 #ifdef CONFIG_SECURITY_PATH 1760 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1761 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1762 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1763 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1764 unsigned int dev); 1765 int security_path_truncate(const struct path *path); 1766 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1767 const char *old_name); 1768 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1769 struct dentry *new_dentry); 1770 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1771 const struct path *new_dir, struct dentry *new_dentry, 1772 unsigned int flags); 1773 int security_path_chmod(const struct path *path, umode_t mode); 1774 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1775 int security_path_chroot(const struct path *path); 1776 #else /* CONFIG_SECURITY_PATH */ 1777 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1778 { 1779 return 0; 1780 } 1781 1782 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1783 umode_t mode) 1784 { 1785 return 0; 1786 } 1787 1788 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1789 { 1790 return 0; 1791 } 1792 1793 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1794 umode_t mode, unsigned int dev) 1795 { 1796 return 0; 1797 } 1798 1799 static inline int security_path_truncate(const struct path *path) 1800 { 1801 return 0; 1802 } 1803 1804 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1805 const char *old_name) 1806 { 1807 return 0; 1808 } 1809 1810 static inline int security_path_link(struct dentry *old_dentry, 1811 const struct path *new_dir, 1812 struct dentry *new_dentry) 1813 { 1814 return 0; 1815 } 1816 1817 static inline int security_path_rename(const struct path *old_dir, 1818 struct dentry *old_dentry, 1819 const struct path *new_dir, 1820 struct dentry *new_dentry, 1821 unsigned int flags) 1822 { 1823 return 0; 1824 } 1825 1826 static inline int security_path_chmod(const struct path *path, umode_t mode) 1827 { 1828 return 0; 1829 } 1830 1831 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1832 { 1833 return 0; 1834 } 1835 1836 static inline int security_path_chroot(const struct path *path) 1837 { 1838 return 0; 1839 } 1840 #endif /* CONFIG_SECURITY_PATH */ 1841 1842 #ifdef CONFIG_KEYS 1843 #ifdef CONFIG_SECURITY 1844 1845 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1846 void security_key_free(struct key *key); 1847 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1848 enum key_need_perm need_perm); 1849 int security_key_getsecurity(struct key *key, char **_buffer); 1850 1851 #else 1852 1853 static inline int security_key_alloc(struct key *key, 1854 const struct cred *cred, 1855 unsigned long flags) 1856 { 1857 return 0; 1858 } 1859 1860 static inline void security_key_free(struct key *key) 1861 { 1862 } 1863 1864 static inline int security_key_permission(key_ref_t key_ref, 1865 const struct cred *cred, 1866 enum key_need_perm need_perm) 1867 { 1868 return 0; 1869 } 1870 1871 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1872 { 1873 *_buffer = NULL; 1874 return 0; 1875 } 1876 1877 #endif 1878 #endif /* CONFIG_KEYS */ 1879 1880 #ifdef CONFIG_AUDIT 1881 #ifdef CONFIG_SECURITY 1882 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1883 int security_audit_rule_known(struct audit_krule *krule); 1884 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1885 void security_audit_rule_free(void *lsmrule); 1886 1887 #else 1888 1889 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1890 void **lsmrule) 1891 { 1892 return 0; 1893 } 1894 1895 static inline int security_audit_rule_known(struct audit_krule *krule) 1896 { 1897 return 0; 1898 } 1899 1900 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1901 void *lsmrule) 1902 { 1903 return 0; 1904 } 1905 1906 static inline void security_audit_rule_free(void *lsmrule) 1907 { } 1908 1909 #endif /* CONFIG_SECURITY */ 1910 #endif /* CONFIG_AUDIT */ 1911 1912 #ifdef CONFIG_SECURITYFS 1913 1914 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1915 struct dentry *parent, void *data, 1916 const struct file_operations *fops); 1917 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1918 struct dentry *securityfs_create_symlink(const char *name, 1919 struct dentry *parent, 1920 const char *target, 1921 const struct inode_operations *iops); 1922 extern void securityfs_remove(struct dentry *dentry); 1923 1924 #else /* CONFIG_SECURITYFS */ 1925 1926 static inline struct dentry *securityfs_create_dir(const char *name, 1927 struct dentry *parent) 1928 { 1929 return ERR_PTR(-ENODEV); 1930 } 1931 1932 static inline struct dentry *securityfs_create_file(const char *name, 1933 umode_t mode, 1934 struct dentry *parent, 1935 void *data, 1936 const struct file_operations *fops) 1937 { 1938 return ERR_PTR(-ENODEV); 1939 } 1940 1941 static inline struct dentry *securityfs_create_symlink(const char *name, 1942 struct dentry *parent, 1943 const char *target, 1944 const struct inode_operations *iops) 1945 { 1946 return ERR_PTR(-ENODEV); 1947 } 1948 1949 static inline void securityfs_remove(struct dentry *dentry) 1950 {} 1951 1952 #endif 1953 1954 #ifdef CONFIG_BPF_SYSCALL 1955 union bpf_attr; 1956 struct bpf_map; 1957 struct bpf_prog; 1958 struct bpf_prog_aux; 1959 #ifdef CONFIG_SECURITY 1960 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1961 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1962 extern int security_bpf_prog(struct bpf_prog *prog); 1963 extern int security_bpf_map_alloc(struct bpf_map *map); 1964 extern void security_bpf_map_free(struct bpf_map *map); 1965 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1966 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1967 #else 1968 static inline int security_bpf(int cmd, union bpf_attr *attr, 1969 unsigned int size) 1970 { 1971 return 0; 1972 } 1973 1974 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1975 { 1976 return 0; 1977 } 1978 1979 static inline int security_bpf_prog(struct bpf_prog *prog) 1980 { 1981 return 0; 1982 } 1983 1984 static inline int security_bpf_map_alloc(struct bpf_map *map) 1985 { 1986 return 0; 1987 } 1988 1989 static inline void security_bpf_map_free(struct bpf_map *map) 1990 { } 1991 1992 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1993 { 1994 return 0; 1995 } 1996 1997 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1998 { } 1999 #endif /* CONFIG_SECURITY */ 2000 #endif /* CONFIG_BPF_SYSCALL */ 2001 2002 #ifdef CONFIG_PERF_EVENTS 2003 struct perf_event_attr; 2004 struct perf_event; 2005 2006 #ifdef CONFIG_SECURITY 2007 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 2008 extern int security_perf_event_alloc(struct perf_event *event); 2009 extern void security_perf_event_free(struct perf_event *event); 2010 extern int security_perf_event_read(struct perf_event *event); 2011 extern int security_perf_event_write(struct perf_event *event); 2012 #else 2013 static inline int security_perf_event_open(struct perf_event_attr *attr, 2014 int type) 2015 { 2016 return 0; 2017 } 2018 2019 static inline int security_perf_event_alloc(struct perf_event *event) 2020 { 2021 return 0; 2022 } 2023 2024 static inline void security_perf_event_free(struct perf_event *event) 2025 { 2026 } 2027 2028 static inline int security_perf_event_read(struct perf_event *event) 2029 { 2030 return 0; 2031 } 2032 2033 static inline int security_perf_event_write(struct perf_event *event) 2034 { 2035 return 0; 2036 } 2037 #endif /* CONFIG_SECURITY */ 2038 #endif /* CONFIG_PERF_EVENTS */ 2039 2040 #endif /* ! __LINUX_SECURITY_H */ 2041