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_BPF_WRITE_USER, 124 LOCKDOWN_INTEGRITY_MAX, 125 LOCKDOWN_KCORE, 126 LOCKDOWN_KPROBES, 127 LOCKDOWN_BPF_READ_KERNEL, 128 LOCKDOWN_PERF, 129 LOCKDOWN_TRACEFS, 130 LOCKDOWN_XMON_RW, 131 LOCKDOWN_XFRM_SECRET, 132 LOCKDOWN_CONFIDENTIALITY_MAX, 133 }; 134 135 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 136 137 /* These functions are in security/commoncap.c */ 138 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 139 int cap, unsigned int opts); 140 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 141 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 142 extern int cap_ptrace_traceme(struct task_struct *parent); 143 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 144 extern int cap_capset(struct cred *new, const struct cred *old, 145 const kernel_cap_t *effective, 146 const kernel_cap_t *inheritable, 147 const kernel_cap_t *permitted); 148 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 149 int cap_inode_setxattr(struct dentry *dentry, const char *name, 150 const void *value, size_t size, int flags); 151 int cap_inode_removexattr(struct user_namespace *mnt_userns, 152 struct dentry *dentry, const char *name); 153 int cap_inode_need_killpriv(struct dentry *dentry); 154 int cap_inode_killpriv(struct user_namespace *mnt_userns, 155 struct dentry *dentry); 156 int cap_inode_getsecurity(struct user_namespace *mnt_userns, 157 struct inode *inode, const char *name, void **buffer, 158 bool alloc); 159 extern int cap_mmap_addr(unsigned long addr); 160 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 161 unsigned long prot, unsigned long flags); 162 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 163 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 164 unsigned long arg4, unsigned long arg5); 165 extern int cap_task_setscheduler(struct task_struct *p); 166 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 167 extern int cap_task_setnice(struct task_struct *p, int nice); 168 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 169 170 struct msghdr; 171 struct sk_buff; 172 struct sock; 173 struct sockaddr; 174 struct socket; 175 struct flowi_common; 176 struct dst_entry; 177 struct xfrm_selector; 178 struct xfrm_policy; 179 struct xfrm_state; 180 struct xfrm_user_sec_ctx; 181 struct seq_file; 182 struct sctp_endpoint; 183 184 #ifdef CONFIG_MMU 185 extern unsigned long mmap_min_addr; 186 extern unsigned long dac_mmap_min_addr; 187 #else 188 #define mmap_min_addr 0UL 189 #define dac_mmap_min_addr 0UL 190 #endif 191 192 /* 193 * Values used in the task_security_ops calls 194 */ 195 /* setuid or setgid, id0 == uid or gid */ 196 #define LSM_SETID_ID 1 197 198 /* setreuid or setregid, id0 == real, id1 == eff */ 199 #define LSM_SETID_RE 2 200 201 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 202 #define LSM_SETID_RES 4 203 204 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 205 #define LSM_SETID_FS 8 206 207 /* Flags for security_task_prlimit(). */ 208 #define LSM_PRLIMIT_READ 1 209 #define LSM_PRLIMIT_WRITE 2 210 211 /* forward declares to avoid warnings */ 212 struct sched_param; 213 struct request_sock; 214 215 /* bprm->unsafe reasons */ 216 #define LSM_UNSAFE_SHARE 1 217 #define LSM_UNSAFE_PTRACE 2 218 #define LSM_UNSAFE_NO_NEW_PRIVS 4 219 220 #ifdef CONFIG_MMU 221 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 222 void *buffer, size_t *lenp, loff_t *ppos); 223 #endif 224 225 /* security_inode_init_security callback function to write xattrs */ 226 typedef int (*initxattrs) (struct inode *inode, 227 const struct xattr *xattr_array, void *fs_data); 228 229 230 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 231 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 232 #define __data_id_stringify(dummy, str) #str, 233 234 enum kernel_load_data_id { 235 __kernel_read_file_id(__data_id_enumify) 236 }; 237 238 static const char * const kernel_load_data_str[] = { 239 __kernel_read_file_id(__data_id_stringify) 240 }; 241 242 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 243 { 244 if ((unsigned)id >= LOADING_MAX_ID) 245 return kernel_load_data_str[LOADING_UNKNOWN]; 246 247 return kernel_load_data_str[id]; 248 } 249 250 #ifdef CONFIG_SECURITY 251 252 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 253 int register_blocking_lsm_notifier(struct notifier_block *nb); 254 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 255 256 /* prototypes */ 257 extern int security_init(void); 258 extern int early_security_init(void); 259 260 /* Security operations */ 261 int security_binder_set_context_mgr(struct task_struct *mgr); 262 int security_binder_transaction(struct task_struct *from, 263 struct task_struct *to); 264 int security_binder_transfer_binder(struct task_struct *from, 265 struct task_struct *to); 266 int security_binder_transfer_file(struct task_struct *from, 267 struct task_struct *to, struct file *file); 268 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 269 int security_ptrace_traceme(struct task_struct *parent); 270 int security_capget(struct task_struct *target, 271 kernel_cap_t *effective, 272 kernel_cap_t *inheritable, 273 kernel_cap_t *permitted); 274 int security_capset(struct cred *new, const struct cred *old, 275 const kernel_cap_t *effective, 276 const kernel_cap_t *inheritable, 277 const kernel_cap_t *permitted); 278 int security_capable(const struct cred *cred, 279 struct user_namespace *ns, 280 int cap, 281 unsigned int opts); 282 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 283 int security_quota_on(struct dentry *dentry); 284 int security_syslog(int type); 285 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 286 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 287 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 288 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 289 int security_bprm_check(struct linux_binprm *bprm); 290 void security_bprm_committing_creds(struct linux_binprm *bprm); 291 void security_bprm_committed_creds(struct linux_binprm *bprm); 292 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 293 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 294 int security_sb_alloc(struct super_block *sb); 295 void security_sb_delete(struct super_block *sb); 296 void security_sb_free(struct super_block *sb); 297 void security_free_mnt_opts(void **mnt_opts); 298 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 299 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); 300 int security_sb_remount(struct super_block *sb, void *mnt_opts); 301 int security_sb_kern_mount(struct super_block *sb); 302 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 303 int security_sb_statfs(struct dentry *dentry); 304 int security_sb_mount(const char *dev_name, const struct path *path, 305 const char *type, unsigned long flags, void *data); 306 int security_sb_umount(struct vfsmount *mnt, int flags); 307 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 308 int security_sb_set_mnt_opts(struct super_block *sb, 309 void *mnt_opts, 310 unsigned long kern_flags, 311 unsigned long *set_kern_flags); 312 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 313 struct super_block *newsb, 314 unsigned long kern_flags, 315 unsigned long *set_kern_flags); 316 int security_add_mnt_opt(const char *option, const char *val, 317 int len, void **mnt_opts); 318 int security_move_mount(const struct path *from_path, const struct path *to_path); 319 int security_dentry_init_security(struct dentry *dentry, int mode, 320 const struct qstr *name, void **ctx, 321 u32 *ctxlen); 322 int security_dentry_create_files_as(struct dentry *dentry, int mode, 323 struct qstr *name, 324 const struct cred *old, 325 struct cred *new); 326 int security_path_notify(const struct path *path, u64 mask, 327 unsigned int obj_type); 328 int security_inode_alloc(struct inode *inode); 329 void security_inode_free(struct inode *inode); 330 int security_inode_init_security(struct inode *inode, struct inode *dir, 331 const struct qstr *qstr, 332 initxattrs initxattrs, void *fs_data); 333 int security_inode_init_security_anon(struct inode *inode, 334 const struct qstr *name, 335 const struct inode *context_inode); 336 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 337 const struct qstr *qstr, const char **name, 338 void **value, size_t *len); 339 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 340 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 341 struct dentry *new_dentry); 342 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 343 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 344 const char *old_name); 345 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 346 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 347 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 348 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 349 struct inode *new_dir, struct dentry *new_dentry, 350 unsigned int flags); 351 int security_inode_readlink(struct dentry *dentry); 352 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 353 bool rcu); 354 int security_inode_permission(struct inode *inode, int mask); 355 int security_inode_setattr(struct dentry *dentry, struct iattr *attr); 356 int security_inode_getattr(const struct path *path); 357 int security_inode_setxattr(struct user_namespace *mnt_userns, 358 struct dentry *dentry, const char *name, 359 const void *value, size_t size, int flags); 360 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 361 const void *value, size_t size, int flags); 362 int security_inode_getxattr(struct dentry *dentry, const char *name); 363 int security_inode_listxattr(struct dentry *dentry); 364 int security_inode_removexattr(struct user_namespace *mnt_userns, 365 struct dentry *dentry, const char *name); 366 int security_inode_need_killpriv(struct dentry *dentry); 367 int security_inode_killpriv(struct user_namespace *mnt_userns, 368 struct dentry *dentry); 369 int security_inode_getsecurity(struct user_namespace *mnt_userns, 370 struct inode *inode, const char *name, 371 void **buffer, bool alloc); 372 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 373 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 374 void security_inode_getsecid(struct inode *inode, u32 *secid); 375 int security_inode_copy_up(struct dentry *src, struct cred **new); 376 int security_inode_copy_up_xattr(const char *name); 377 int security_kernfs_init_security(struct kernfs_node *kn_dir, 378 struct kernfs_node *kn); 379 int security_file_permission(struct file *file, int mask); 380 int security_file_alloc(struct file *file); 381 void security_file_free(struct file *file); 382 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 383 int security_mmap_file(struct file *file, unsigned long prot, 384 unsigned long flags); 385 int security_mmap_addr(unsigned long addr); 386 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 387 unsigned long prot); 388 int security_file_lock(struct file *file, unsigned int cmd); 389 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 390 void security_file_set_fowner(struct file *file); 391 int security_file_send_sigiotask(struct task_struct *tsk, 392 struct fown_struct *fown, int sig); 393 int security_file_receive(struct file *file); 394 int security_file_open(struct file *file); 395 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 396 void security_task_free(struct task_struct *task); 397 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 398 void security_cred_free(struct cred *cred); 399 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 400 void security_transfer_creds(struct cred *new, const struct cred *old); 401 void security_cred_getsecid(const struct cred *c, u32 *secid); 402 int security_kernel_act_as(struct cred *new, u32 secid); 403 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 404 int security_kernel_module_request(char *kmod_name); 405 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 406 int security_kernel_post_load_data(char *buf, loff_t size, 407 enum kernel_load_data_id id, 408 char *description); 409 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 410 bool contents); 411 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 412 enum kernel_read_file_id id); 413 int security_task_fix_setuid(struct cred *new, const struct cred *old, 414 int flags); 415 int security_task_fix_setgid(struct cred *new, const struct cred *old, 416 int flags); 417 int security_task_setpgid(struct task_struct *p, pid_t pgid); 418 int security_task_getpgid(struct task_struct *p); 419 int security_task_getsid(struct task_struct *p); 420 void security_task_getsecid_subj(struct task_struct *p, u32 *secid); 421 void security_task_getsecid_obj(struct task_struct *p, u32 *secid); 422 int security_task_setnice(struct task_struct *p, int nice); 423 int security_task_setioprio(struct task_struct *p, int ioprio); 424 int security_task_getioprio(struct task_struct *p); 425 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 426 unsigned int flags); 427 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 428 struct rlimit *new_rlim); 429 int security_task_setscheduler(struct task_struct *p); 430 int security_task_getscheduler(struct task_struct *p); 431 int security_task_movememory(struct task_struct *p); 432 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 433 int sig, const struct cred *cred); 434 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 435 unsigned long arg4, unsigned long arg5); 436 void security_task_to_inode(struct task_struct *p, struct inode *inode); 437 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 438 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 439 int security_msg_msg_alloc(struct msg_msg *msg); 440 void security_msg_msg_free(struct msg_msg *msg); 441 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 442 void security_msg_queue_free(struct kern_ipc_perm *msq); 443 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 444 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 445 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 446 struct msg_msg *msg, int msqflg); 447 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 448 struct task_struct *target, long type, int mode); 449 int security_shm_alloc(struct kern_ipc_perm *shp); 450 void security_shm_free(struct kern_ipc_perm *shp); 451 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 452 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 453 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 454 int security_sem_alloc(struct kern_ipc_perm *sma); 455 void security_sem_free(struct kern_ipc_perm *sma); 456 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 457 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 458 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 459 unsigned nsops, int alter); 460 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 461 int security_getprocattr(struct task_struct *p, const char *lsm, char *name, 462 char **value); 463 int security_setprocattr(const char *lsm, const char *name, void *value, 464 size_t size); 465 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 466 int security_ismaclabel(const char *name); 467 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 468 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 469 void security_release_secctx(char *secdata, u32 seclen); 470 void security_inode_invalidate_secctx(struct inode *inode); 471 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 472 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 473 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 474 int security_locked_down(enum lockdown_reason what); 475 #else /* CONFIG_SECURITY */ 476 477 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 478 { 479 return 0; 480 } 481 482 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 483 { 484 return 0; 485 } 486 487 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 488 { 489 return 0; 490 } 491 492 static inline void security_free_mnt_opts(void **mnt_opts) 493 { 494 } 495 496 /* 497 * This is the default capabilities functionality. Most of these functions 498 * are just stubbed out, but a few must call the proper capable code. 499 */ 500 501 static inline int security_init(void) 502 { 503 return 0; 504 } 505 506 static inline int early_security_init(void) 507 { 508 return 0; 509 } 510 511 static inline int security_binder_set_context_mgr(struct task_struct *mgr) 512 { 513 return 0; 514 } 515 516 static inline int security_binder_transaction(struct task_struct *from, 517 struct task_struct *to) 518 { 519 return 0; 520 } 521 522 static inline int security_binder_transfer_binder(struct task_struct *from, 523 struct task_struct *to) 524 { 525 return 0; 526 } 527 528 static inline int security_binder_transfer_file(struct task_struct *from, 529 struct task_struct *to, 530 struct file *file) 531 { 532 return 0; 533 } 534 535 static inline int security_ptrace_access_check(struct task_struct *child, 536 unsigned int mode) 537 { 538 return cap_ptrace_access_check(child, mode); 539 } 540 541 static inline int security_ptrace_traceme(struct task_struct *parent) 542 { 543 return cap_ptrace_traceme(parent); 544 } 545 546 static inline int security_capget(struct task_struct *target, 547 kernel_cap_t *effective, 548 kernel_cap_t *inheritable, 549 kernel_cap_t *permitted) 550 { 551 return cap_capget(target, effective, inheritable, permitted); 552 } 553 554 static inline int security_capset(struct cred *new, 555 const struct cred *old, 556 const kernel_cap_t *effective, 557 const kernel_cap_t *inheritable, 558 const kernel_cap_t *permitted) 559 { 560 return cap_capset(new, old, effective, inheritable, permitted); 561 } 562 563 static inline int security_capable(const struct cred *cred, 564 struct user_namespace *ns, 565 int cap, 566 unsigned int opts) 567 { 568 return cap_capable(cred, ns, cap, opts); 569 } 570 571 static inline int security_quotactl(int cmds, int type, int id, 572 struct super_block *sb) 573 { 574 return 0; 575 } 576 577 static inline int security_quota_on(struct dentry *dentry) 578 { 579 return 0; 580 } 581 582 static inline int security_syslog(int type) 583 { 584 return 0; 585 } 586 587 static inline int security_settime64(const struct timespec64 *ts, 588 const struct timezone *tz) 589 { 590 return cap_settime(ts, tz); 591 } 592 593 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 594 { 595 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 596 } 597 598 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 599 { 600 return 0; 601 } 602 603 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 604 struct file *file) 605 { 606 return cap_bprm_creds_from_file(bprm, file); 607 } 608 609 static inline int security_bprm_check(struct linux_binprm *bprm) 610 { 611 return 0; 612 } 613 614 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 615 { 616 } 617 618 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 619 { 620 } 621 622 static inline int security_fs_context_dup(struct fs_context *fc, 623 struct fs_context *src_fc) 624 { 625 return 0; 626 } 627 static inline int security_fs_context_parse_param(struct fs_context *fc, 628 struct fs_parameter *param) 629 { 630 return -ENOPARAM; 631 } 632 633 static inline int security_sb_alloc(struct super_block *sb) 634 { 635 return 0; 636 } 637 638 static inline void security_sb_delete(struct super_block *sb) 639 { } 640 641 static inline void security_sb_free(struct super_block *sb) 642 { } 643 644 static inline int security_sb_eat_lsm_opts(char *options, 645 void **mnt_opts) 646 { 647 return 0; 648 } 649 650 static inline int security_sb_remount(struct super_block *sb, 651 void *mnt_opts) 652 { 653 return 0; 654 } 655 656 static inline int security_sb_mnt_opts_compat(struct super_block *sb, 657 void *mnt_opts) 658 { 659 return 0; 660 } 661 662 663 static inline int security_sb_kern_mount(struct super_block *sb) 664 { 665 return 0; 666 } 667 668 static inline int security_sb_show_options(struct seq_file *m, 669 struct super_block *sb) 670 { 671 return 0; 672 } 673 674 static inline int security_sb_statfs(struct dentry *dentry) 675 { 676 return 0; 677 } 678 679 static inline int security_sb_mount(const char *dev_name, const struct path *path, 680 const char *type, unsigned long flags, 681 void *data) 682 { 683 return 0; 684 } 685 686 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 687 { 688 return 0; 689 } 690 691 static inline int security_sb_pivotroot(const struct path *old_path, 692 const struct path *new_path) 693 { 694 return 0; 695 } 696 697 static inline int security_sb_set_mnt_opts(struct super_block *sb, 698 void *mnt_opts, 699 unsigned long kern_flags, 700 unsigned long *set_kern_flags) 701 { 702 return 0; 703 } 704 705 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 706 struct super_block *newsb, 707 unsigned long kern_flags, 708 unsigned long *set_kern_flags) 709 { 710 return 0; 711 } 712 713 static inline int security_add_mnt_opt(const char *option, const char *val, 714 int len, void **mnt_opts) 715 { 716 return 0; 717 } 718 719 static inline int security_move_mount(const struct path *from_path, 720 const struct path *to_path) 721 { 722 return 0; 723 } 724 725 static inline int security_path_notify(const struct path *path, u64 mask, 726 unsigned int obj_type) 727 { 728 return 0; 729 } 730 731 static inline int security_inode_alloc(struct inode *inode) 732 { 733 return 0; 734 } 735 736 static inline void security_inode_free(struct inode *inode) 737 { } 738 739 static inline int security_dentry_init_security(struct dentry *dentry, 740 int mode, 741 const struct qstr *name, 742 void **ctx, 743 u32 *ctxlen) 744 { 745 return -EOPNOTSUPP; 746 } 747 748 static inline int security_dentry_create_files_as(struct dentry *dentry, 749 int mode, struct qstr *name, 750 const struct cred *old, 751 struct cred *new) 752 { 753 return 0; 754 } 755 756 757 static inline int security_inode_init_security(struct inode *inode, 758 struct inode *dir, 759 const struct qstr *qstr, 760 const initxattrs xattrs, 761 void *fs_data) 762 { 763 return 0; 764 } 765 766 static inline int security_inode_init_security_anon(struct inode *inode, 767 const struct qstr *name, 768 const struct inode *context_inode) 769 { 770 return 0; 771 } 772 773 static inline int security_old_inode_init_security(struct inode *inode, 774 struct inode *dir, 775 const struct qstr *qstr, 776 const char **name, 777 void **value, size_t *len) 778 { 779 return -EOPNOTSUPP; 780 } 781 782 static inline int security_inode_create(struct inode *dir, 783 struct dentry *dentry, 784 umode_t mode) 785 { 786 return 0; 787 } 788 789 static inline int security_inode_link(struct dentry *old_dentry, 790 struct inode *dir, 791 struct dentry *new_dentry) 792 { 793 return 0; 794 } 795 796 static inline int security_inode_unlink(struct inode *dir, 797 struct dentry *dentry) 798 { 799 return 0; 800 } 801 802 static inline int security_inode_symlink(struct inode *dir, 803 struct dentry *dentry, 804 const char *old_name) 805 { 806 return 0; 807 } 808 809 static inline int security_inode_mkdir(struct inode *dir, 810 struct dentry *dentry, 811 int mode) 812 { 813 return 0; 814 } 815 816 static inline int security_inode_rmdir(struct inode *dir, 817 struct dentry *dentry) 818 { 819 return 0; 820 } 821 822 static inline int security_inode_mknod(struct inode *dir, 823 struct dentry *dentry, 824 int mode, dev_t dev) 825 { 826 return 0; 827 } 828 829 static inline int security_inode_rename(struct inode *old_dir, 830 struct dentry *old_dentry, 831 struct inode *new_dir, 832 struct dentry *new_dentry, 833 unsigned int flags) 834 { 835 return 0; 836 } 837 838 static inline int security_inode_readlink(struct dentry *dentry) 839 { 840 return 0; 841 } 842 843 static inline int security_inode_follow_link(struct dentry *dentry, 844 struct inode *inode, 845 bool rcu) 846 { 847 return 0; 848 } 849 850 static inline int security_inode_permission(struct inode *inode, int mask) 851 { 852 return 0; 853 } 854 855 static inline int security_inode_setattr(struct dentry *dentry, 856 struct iattr *attr) 857 { 858 return 0; 859 } 860 861 static inline int security_inode_getattr(const struct path *path) 862 { 863 return 0; 864 } 865 866 static inline int security_inode_setxattr(struct user_namespace *mnt_userns, 867 struct dentry *dentry, const char *name, const void *value, 868 size_t size, int flags) 869 { 870 return cap_inode_setxattr(dentry, name, value, size, flags); 871 } 872 873 static inline void security_inode_post_setxattr(struct dentry *dentry, 874 const char *name, const void *value, size_t size, int flags) 875 { } 876 877 static inline int security_inode_getxattr(struct dentry *dentry, 878 const char *name) 879 { 880 return 0; 881 } 882 883 static inline int security_inode_listxattr(struct dentry *dentry) 884 { 885 return 0; 886 } 887 888 static inline int security_inode_removexattr(struct user_namespace *mnt_userns, 889 struct dentry *dentry, 890 const char *name) 891 { 892 return cap_inode_removexattr(mnt_userns, dentry, name); 893 } 894 895 static inline int security_inode_need_killpriv(struct dentry *dentry) 896 { 897 return cap_inode_need_killpriv(dentry); 898 } 899 900 static inline int security_inode_killpriv(struct user_namespace *mnt_userns, 901 struct dentry *dentry) 902 { 903 return cap_inode_killpriv(mnt_userns, dentry); 904 } 905 906 static inline int security_inode_getsecurity(struct user_namespace *mnt_userns, 907 struct inode *inode, 908 const char *name, void **buffer, 909 bool alloc) 910 { 911 return cap_inode_getsecurity(mnt_userns, inode, name, buffer, alloc); 912 } 913 914 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 915 { 916 return -EOPNOTSUPP; 917 } 918 919 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 920 { 921 return 0; 922 } 923 924 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 925 { 926 *secid = 0; 927 } 928 929 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 930 { 931 return 0; 932 } 933 934 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 935 struct kernfs_node *kn) 936 { 937 return 0; 938 } 939 940 static inline int security_inode_copy_up_xattr(const char *name) 941 { 942 return -EOPNOTSUPP; 943 } 944 945 static inline int security_file_permission(struct file *file, int mask) 946 { 947 return 0; 948 } 949 950 static inline int security_file_alloc(struct file *file) 951 { 952 return 0; 953 } 954 955 static inline void security_file_free(struct file *file) 956 { } 957 958 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 959 unsigned long arg) 960 { 961 return 0; 962 } 963 964 static inline int security_mmap_file(struct file *file, unsigned long prot, 965 unsigned long flags) 966 { 967 return 0; 968 } 969 970 static inline int security_mmap_addr(unsigned long addr) 971 { 972 return cap_mmap_addr(addr); 973 } 974 975 static inline int security_file_mprotect(struct vm_area_struct *vma, 976 unsigned long reqprot, 977 unsigned long prot) 978 { 979 return 0; 980 } 981 982 static inline int security_file_lock(struct file *file, unsigned int cmd) 983 { 984 return 0; 985 } 986 987 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 988 unsigned long arg) 989 { 990 return 0; 991 } 992 993 static inline void security_file_set_fowner(struct file *file) 994 { 995 return; 996 } 997 998 static inline int security_file_send_sigiotask(struct task_struct *tsk, 999 struct fown_struct *fown, 1000 int sig) 1001 { 1002 return 0; 1003 } 1004 1005 static inline int security_file_receive(struct file *file) 1006 { 1007 return 0; 1008 } 1009 1010 static inline int security_file_open(struct file *file) 1011 { 1012 return 0; 1013 } 1014 1015 static inline int security_task_alloc(struct task_struct *task, 1016 unsigned long clone_flags) 1017 { 1018 return 0; 1019 } 1020 1021 static inline void security_task_free(struct task_struct *task) 1022 { } 1023 1024 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1025 { 1026 return 0; 1027 } 1028 1029 static inline void security_cred_free(struct cred *cred) 1030 { } 1031 1032 static inline int security_prepare_creds(struct cred *new, 1033 const struct cred *old, 1034 gfp_t gfp) 1035 { 1036 return 0; 1037 } 1038 1039 static inline void security_transfer_creds(struct cred *new, 1040 const struct cred *old) 1041 { 1042 } 1043 1044 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1045 { 1046 return 0; 1047 } 1048 1049 static inline int security_kernel_create_files_as(struct cred *cred, 1050 struct inode *inode) 1051 { 1052 return 0; 1053 } 1054 1055 static inline int security_kernel_module_request(char *kmod_name) 1056 { 1057 return 0; 1058 } 1059 1060 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1061 { 1062 return 0; 1063 } 1064 1065 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1066 enum kernel_load_data_id id, 1067 char *description) 1068 { 1069 return 0; 1070 } 1071 1072 static inline int security_kernel_read_file(struct file *file, 1073 enum kernel_read_file_id id, 1074 bool contents) 1075 { 1076 return 0; 1077 } 1078 1079 static inline int security_kernel_post_read_file(struct file *file, 1080 char *buf, loff_t size, 1081 enum kernel_read_file_id id) 1082 { 1083 return 0; 1084 } 1085 1086 static inline int security_task_fix_setuid(struct cred *new, 1087 const struct cred *old, 1088 int flags) 1089 { 1090 return cap_task_fix_setuid(new, old, flags); 1091 } 1092 1093 static inline int security_task_fix_setgid(struct cred *new, 1094 const struct cred *old, 1095 int flags) 1096 { 1097 return 0; 1098 } 1099 1100 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1101 { 1102 return 0; 1103 } 1104 1105 static inline int security_task_getpgid(struct task_struct *p) 1106 { 1107 return 0; 1108 } 1109 1110 static inline int security_task_getsid(struct task_struct *p) 1111 { 1112 return 0; 1113 } 1114 1115 static inline void security_task_getsecid_subj(struct task_struct *p, u32 *secid) 1116 { 1117 *secid = 0; 1118 } 1119 1120 static inline void security_task_getsecid_obj(struct task_struct *p, u32 *secid) 1121 { 1122 *secid = 0; 1123 } 1124 1125 static inline int security_task_setnice(struct task_struct *p, int nice) 1126 { 1127 return cap_task_setnice(p, nice); 1128 } 1129 1130 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1131 { 1132 return cap_task_setioprio(p, ioprio); 1133 } 1134 1135 static inline int security_task_getioprio(struct task_struct *p) 1136 { 1137 return 0; 1138 } 1139 1140 static inline int security_task_prlimit(const struct cred *cred, 1141 const struct cred *tcred, 1142 unsigned int flags) 1143 { 1144 return 0; 1145 } 1146 1147 static inline int security_task_setrlimit(struct task_struct *p, 1148 unsigned int resource, 1149 struct rlimit *new_rlim) 1150 { 1151 return 0; 1152 } 1153 1154 static inline int security_task_setscheduler(struct task_struct *p) 1155 { 1156 return cap_task_setscheduler(p); 1157 } 1158 1159 static inline int security_task_getscheduler(struct task_struct *p) 1160 { 1161 return 0; 1162 } 1163 1164 static inline int security_task_movememory(struct task_struct *p) 1165 { 1166 return 0; 1167 } 1168 1169 static inline int security_task_kill(struct task_struct *p, 1170 struct kernel_siginfo *info, int sig, 1171 const struct cred *cred) 1172 { 1173 return 0; 1174 } 1175 1176 static inline int security_task_prctl(int option, unsigned long arg2, 1177 unsigned long arg3, 1178 unsigned long arg4, 1179 unsigned long arg5) 1180 { 1181 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1182 } 1183 1184 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1185 { } 1186 1187 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1188 short flag) 1189 { 1190 return 0; 1191 } 1192 1193 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1194 { 1195 *secid = 0; 1196 } 1197 1198 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1199 { 1200 return 0; 1201 } 1202 1203 static inline void security_msg_msg_free(struct msg_msg *msg) 1204 { } 1205 1206 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1207 { 1208 return 0; 1209 } 1210 1211 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1212 { } 1213 1214 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1215 int msqflg) 1216 { 1217 return 0; 1218 } 1219 1220 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1221 { 1222 return 0; 1223 } 1224 1225 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1226 struct msg_msg *msg, int msqflg) 1227 { 1228 return 0; 1229 } 1230 1231 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1232 struct msg_msg *msg, 1233 struct task_struct *target, 1234 long type, int mode) 1235 { 1236 return 0; 1237 } 1238 1239 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1240 { 1241 return 0; 1242 } 1243 1244 static inline void security_shm_free(struct kern_ipc_perm *shp) 1245 { } 1246 1247 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1248 int shmflg) 1249 { 1250 return 0; 1251 } 1252 1253 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1254 { 1255 return 0; 1256 } 1257 1258 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1259 char __user *shmaddr, int shmflg) 1260 { 1261 return 0; 1262 } 1263 1264 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1265 { 1266 return 0; 1267 } 1268 1269 static inline void security_sem_free(struct kern_ipc_perm *sma) 1270 { } 1271 1272 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1273 { 1274 return 0; 1275 } 1276 1277 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1278 { 1279 return 0; 1280 } 1281 1282 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1283 struct sembuf *sops, unsigned nsops, 1284 int alter) 1285 { 1286 return 0; 1287 } 1288 1289 static inline void security_d_instantiate(struct dentry *dentry, 1290 struct inode *inode) 1291 { } 1292 1293 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1294 char *name, char **value) 1295 { 1296 return -EINVAL; 1297 } 1298 1299 static inline int security_setprocattr(const char *lsm, char *name, 1300 void *value, size_t size) 1301 { 1302 return -EINVAL; 1303 } 1304 1305 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1306 { 1307 return 0; 1308 } 1309 1310 static inline int security_ismaclabel(const char *name) 1311 { 1312 return 0; 1313 } 1314 1315 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1316 { 1317 return -EOPNOTSUPP; 1318 } 1319 1320 static inline int security_secctx_to_secid(const char *secdata, 1321 u32 seclen, 1322 u32 *secid) 1323 { 1324 return -EOPNOTSUPP; 1325 } 1326 1327 static inline void security_release_secctx(char *secdata, u32 seclen) 1328 { 1329 } 1330 1331 static inline void security_inode_invalidate_secctx(struct inode *inode) 1332 { 1333 } 1334 1335 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1336 { 1337 return -EOPNOTSUPP; 1338 } 1339 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1340 { 1341 return -EOPNOTSUPP; 1342 } 1343 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1344 { 1345 return -EOPNOTSUPP; 1346 } 1347 static inline int security_locked_down(enum lockdown_reason what) 1348 { 1349 return 0; 1350 } 1351 #endif /* CONFIG_SECURITY */ 1352 1353 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1354 int security_post_notification(const struct cred *w_cred, 1355 const struct cred *cred, 1356 struct watch_notification *n); 1357 #else 1358 static inline int security_post_notification(const struct cred *w_cred, 1359 const struct cred *cred, 1360 struct watch_notification *n) 1361 { 1362 return 0; 1363 } 1364 #endif 1365 1366 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1367 int security_watch_key(struct key *key); 1368 #else 1369 static inline int security_watch_key(struct key *key) 1370 { 1371 return 0; 1372 } 1373 #endif 1374 1375 #ifdef CONFIG_SECURITY_NETWORK 1376 1377 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1378 int security_unix_may_send(struct socket *sock, struct socket *other); 1379 int security_socket_create(int family, int type, int protocol, int kern); 1380 int security_socket_post_create(struct socket *sock, int family, 1381 int type, int protocol, int kern); 1382 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1383 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1384 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1385 int security_socket_listen(struct socket *sock, int backlog); 1386 int security_socket_accept(struct socket *sock, struct socket *newsock); 1387 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1388 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1389 int size, int flags); 1390 int security_socket_getsockname(struct socket *sock); 1391 int security_socket_getpeername(struct socket *sock); 1392 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1393 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1394 int security_socket_shutdown(struct socket *sock, int how); 1395 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1396 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1397 int __user *optlen, unsigned len); 1398 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1399 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1400 void security_sk_free(struct sock *sk); 1401 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1402 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic); 1403 void security_req_classify_flow(const struct request_sock *req, 1404 struct flowi_common *flic); 1405 void security_sock_graft(struct sock*sk, struct socket *parent); 1406 int security_inet_conn_request(const struct sock *sk, 1407 struct sk_buff *skb, struct request_sock *req); 1408 void security_inet_csk_clone(struct sock *newsk, 1409 const struct request_sock *req); 1410 void security_inet_conn_established(struct sock *sk, 1411 struct sk_buff *skb); 1412 int security_secmark_relabel_packet(u32 secid); 1413 void security_secmark_refcount_inc(void); 1414 void security_secmark_refcount_dec(void); 1415 int security_tun_dev_alloc_security(void **security); 1416 void security_tun_dev_free_security(void *security); 1417 int security_tun_dev_create(void); 1418 int security_tun_dev_attach_queue(void *security); 1419 int security_tun_dev_attach(struct sock *sk, void *security); 1420 int security_tun_dev_open(void *security); 1421 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb); 1422 int security_sctp_bind_connect(struct sock *sk, int optname, 1423 struct sockaddr *address, int addrlen); 1424 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, 1425 struct sock *newsk); 1426 1427 #else /* CONFIG_SECURITY_NETWORK */ 1428 static inline int security_unix_stream_connect(struct sock *sock, 1429 struct sock *other, 1430 struct sock *newsk) 1431 { 1432 return 0; 1433 } 1434 1435 static inline int security_unix_may_send(struct socket *sock, 1436 struct socket *other) 1437 { 1438 return 0; 1439 } 1440 1441 static inline int security_socket_create(int family, int type, 1442 int protocol, int kern) 1443 { 1444 return 0; 1445 } 1446 1447 static inline int security_socket_post_create(struct socket *sock, 1448 int family, 1449 int type, 1450 int protocol, int kern) 1451 { 1452 return 0; 1453 } 1454 1455 static inline int security_socket_socketpair(struct socket *socka, 1456 struct socket *sockb) 1457 { 1458 return 0; 1459 } 1460 1461 static inline int security_socket_bind(struct socket *sock, 1462 struct sockaddr *address, 1463 int addrlen) 1464 { 1465 return 0; 1466 } 1467 1468 static inline int security_socket_connect(struct socket *sock, 1469 struct sockaddr *address, 1470 int addrlen) 1471 { 1472 return 0; 1473 } 1474 1475 static inline int security_socket_listen(struct socket *sock, int backlog) 1476 { 1477 return 0; 1478 } 1479 1480 static inline int security_socket_accept(struct socket *sock, 1481 struct socket *newsock) 1482 { 1483 return 0; 1484 } 1485 1486 static inline int security_socket_sendmsg(struct socket *sock, 1487 struct msghdr *msg, int size) 1488 { 1489 return 0; 1490 } 1491 1492 static inline int security_socket_recvmsg(struct socket *sock, 1493 struct msghdr *msg, int size, 1494 int flags) 1495 { 1496 return 0; 1497 } 1498 1499 static inline int security_socket_getsockname(struct socket *sock) 1500 { 1501 return 0; 1502 } 1503 1504 static inline int security_socket_getpeername(struct socket *sock) 1505 { 1506 return 0; 1507 } 1508 1509 static inline int security_socket_getsockopt(struct socket *sock, 1510 int level, int optname) 1511 { 1512 return 0; 1513 } 1514 1515 static inline int security_socket_setsockopt(struct socket *sock, 1516 int level, int optname) 1517 { 1518 return 0; 1519 } 1520 1521 static inline int security_socket_shutdown(struct socket *sock, int how) 1522 { 1523 return 0; 1524 } 1525 static inline int security_sock_rcv_skb(struct sock *sk, 1526 struct sk_buff *skb) 1527 { 1528 return 0; 1529 } 1530 1531 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1532 int __user *optlen, unsigned len) 1533 { 1534 return -ENOPROTOOPT; 1535 } 1536 1537 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1538 { 1539 return -ENOPROTOOPT; 1540 } 1541 1542 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1543 { 1544 return 0; 1545 } 1546 1547 static inline void security_sk_free(struct sock *sk) 1548 { 1549 } 1550 1551 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1552 { 1553 } 1554 1555 static inline void security_sk_classify_flow(struct sock *sk, 1556 struct flowi_common *flic) 1557 { 1558 } 1559 1560 static inline void security_req_classify_flow(const struct request_sock *req, 1561 struct flowi_common *flic) 1562 { 1563 } 1564 1565 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1566 { 1567 } 1568 1569 static inline int security_inet_conn_request(const struct sock *sk, 1570 struct sk_buff *skb, struct request_sock *req) 1571 { 1572 return 0; 1573 } 1574 1575 static inline void security_inet_csk_clone(struct sock *newsk, 1576 const struct request_sock *req) 1577 { 1578 } 1579 1580 static inline void security_inet_conn_established(struct sock *sk, 1581 struct sk_buff *skb) 1582 { 1583 } 1584 1585 static inline int security_secmark_relabel_packet(u32 secid) 1586 { 1587 return 0; 1588 } 1589 1590 static inline void security_secmark_refcount_inc(void) 1591 { 1592 } 1593 1594 static inline void security_secmark_refcount_dec(void) 1595 { 1596 } 1597 1598 static inline int security_tun_dev_alloc_security(void **security) 1599 { 1600 return 0; 1601 } 1602 1603 static inline void security_tun_dev_free_security(void *security) 1604 { 1605 } 1606 1607 static inline int security_tun_dev_create(void) 1608 { 1609 return 0; 1610 } 1611 1612 static inline int security_tun_dev_attach_queue(void *security) 1613 { 1614 return 0; 1615 } 1616 1617 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1618 { 1619 return 0; 1620 } 1621 1622 static inline int security_tun_dev_open(void *security) 1623 { 1624 return 0; 1625 } 1626 1627 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep, 1628 struct sk_buff *skb) 1629 { 1630 return 0; 1631 } 1632 1633 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1634 struct sockaddr *address, 1635 int addrlen) 1636 { 1637 return 0; 1638 } 1639 1640 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep, 1641 struct sock *sk, 1642 struct sock *newsk) 1643 { 1644 } 1645 #endif /* CONFIG_SECURITY_NETWORK */ 1646 1647 #ifdef CONFIG_SECURITY_INFINIBAND 1648 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1649 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1650 int security_ib_alloc_security(void **sec); 1651 void security_ib_free_security(void *sec); 1652 #else /* CONFIG_SECURITY_INFINIBAND */ 1653 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1654 { 1655 return 0; 1656 } 1657 1658 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1659 { 1660 return 0; 1661 } 1662 1663 static inline int security_ib_alloc_security(void **sec) 1664 { 1665 return 0; 1666 } 1667 1668 static inline void security_ib_free_security(void *sec) 1669 { 1670 } 1671 #endif /* CONFIG_SECURITY_INFINIBAND */ 1672 1673 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1674 1675 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1676 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1677 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1678 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1679 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1680 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1681 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1682 struct xfrm_sec_ctx *polsec, u32 secid); 1683 int security_xfrm_state_delete(struct xfrm_state *x); 1684 void security_xfrm_state_free(struct xfrm_state *x); 1685 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); 1686 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1687 struct xfrm_policy *xp, 1688 const struct flowi_common *flic); 1689 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1690 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1691 1692 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1693 1694 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1695 struct xfrm_user_sec_ctx *sec_ctx, 1696 gfp_t gfp) 1697 { 1698 return 0; 1699 } 1700 1701 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1702 { 1703 return 0; 1704 } 1705 1706 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1707 { 1708 } 1709 1710 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1711 { 1712 return 0; 1713 } 1714 1715 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1716 struct xfrm_user_sec_ctx *sec_ctx) 1717 { 1718 return 0; 1719 } 1720 1721 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1722 struct xfrm_sec_ctx *polsec, u32 secid) 1723 { 1724 return 0; 1725 } 1726 1727 static inline void security_xfrm_state_free(struct xfrm_state *x) 1728 { 1729 } 1730 1731 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1732 { 1733 return 0; 1734 } 1735 1736 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) 1737 { 1738 return 0; 1739 } 1740 1741 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1742 struct xfrm_policy *xp, 1743 const struct flowi_common *flic) 1744 { 1745 return 1; 1746 } 1747 1748 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1749 { 1750 return 0; 1751 } 1752 1753 static inline void security_skb_classify_flow(struct sk_buff *skb, 1754 struct flowi_common *flic) 1755 { 1756 } 1757 1758 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1759 1760 #ifdef CONFIG_SECURITY_PATH 1761 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1762 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1763 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1764 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1765 unsigned int dev); 1766 int security_path_truncate(const struct path *path); 1767 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1768 const char *old_name); 1769 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1770 struct dentry *new_dentry); 1771 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1772 const struct path *new_dir, struct dentry *new_dentry, 1773 unsigned int flags); 1774 int security_path_chmod(const struct path *path, umode_t mode); 1775 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1776 int security_path_chroot(const struct path *path); 1777 #else /* CONFIG_SECURITY_PATH */ 1778 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1779 { 1780 return 0; 1781 } 1782 1783 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1784 umode_t mode) 1785 { 1786 return 0; 1787 } 1788 1789 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1790 { 1791 return 0; 1792 } 1793 1794 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1795 umode_t mode, unsigned int dev) 1796 { 1797 return 0; 1798 } 1799 1800 static inline int security_path_truncate(const struct path *path) 1801 { 1802 return 0; 1803 } 1804 1805 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1806 const char *old_name) 1807 { 1808 return 0; 1809 } 1810 1811 static inline int security_path_link(struct dentry *old_dentry, 1812 const struct path *new_dir, 1813 struct dentry *new_dentry) 1814 { 1815 return 0; 1816 } 1817 1818 static inline int security_path_rename(const struct path *old_dir, 1819 struct dentry *old_dentry, 1820 const struct path *new_dir, 1821 struct dentry *new_dentry, 1822 unsigned int flags) 1823 { 1824 return 0; 1825 } 1826 1827 static inline int security_path_chmod(const struct path *path, umode_t mode) 1828 { 1829 return 0; 1830 } 1831 1832 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1833 { 1834 return 0; 1835 } 1836 1837 static inline int security_path_chroot(const struct path *path) 1838 { 1839 return 0; 1840 } 1841 #endif /* CONFIG_SECURITY_PATH */ 1842 1843 #ifdef CONFIG_KEYS 1844 #ifdef CONFIG_SECURITY 1845 1846 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1847 void security_key_free(struct key *key); 1848 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1849 enum key_need_perm need_perm); 1850 int security_key_getsecurity(struct key *key, char **_buffer); 1851 1852 #else 1853 1854 static inline int security_key_alloc(struct key *key, 1855 const struct cred *cred, 1856 unsigned long flags) 1857 { 1858 return 0; 1859 } 1860 1861 static inline void security_key_free(struct key *key) 1862 { 1863 } 1864 1865 static inline int security_key_permission(key_ref_t key_ref, 1866 const struct cred *cred, 1867 enum key_need_perm need_perm) 1868 { 1869 return 0; 1870 } 1871 1872 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1873 { 1874 *_buffer = NULL; 1875 return 0; 1876 } 1877 1878 #endif 1879 #endif /* CONFIG_KEYS */ 1880 1881 #ifdef CONFIG_AUDIT 1882 #ifdef CONFIG_SECURITY 1883 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1884 int security_audit_rule_known(struct audit_krule *krule); 1885 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1886 void security_audit_rule_free(void *lsmrule); 1887 1888 #else 1889 1890 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1891 void **lsmrule) 1892 { 1893 return 0; 1894 } 1895 1896 static inline int security_audit_rule_known(struct audit_krule *krule) 1897 { 1898 return 0; 1899 } 1900 1901 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1902 void *lsmrule) 1903 { 1904 return 0; 1905 } 1906 1907 static inline void security_audit_rule_free(void *lsmrule) 1908 { } 1909 1910 #endif /* CONFIG_SECURITY */ 1911 #endif /* CONFIG_AUDIT */ 1912 1913 #ifdef CONFIG_SECURITYFS 1914 1915 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1916 struct dentry *parent, void *data, 1917 const struct file_operations *fops); 1918 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1919 struct dentry *securityfs_create_symlink(const char *name, 1920 struct dentry *parent, 1921 const char *target, 1922 const struct inode_operations *iops); 1923 extern void securityfs_remove(struct dentry *dentry); 1924 1925 #else /* CONFIG_SECURITYFS */ 1926 1927 static inline struct dentry *securityfs_create_dir(const char *name, 1928 struct dentry *parent) 1929 { 1930 return ERR_PTR(-ENODEV); 1931 } 1932 1933 static inline struct dentry *securityfs_create_file(const char *name, 1934 umode_t mode, 1935 struct dentry *parent, 1936 void *data, 1937 const struct file_operations *fops) 1938 { 1939 return ERR_PTR(-ENODEV); 1940 } 1941 1942 static inline struct dentry *securityfs_create_symlink(const char *name, 1943 struct dentry *parent, 1944 const char *target, 1945 const struct inode_operations *iops) 1946 { 1947 return ERR_PTR(-ENODEV); 1948 } 1949 1950 static inline void securityfs_remove(struct dentry *dentry) 1951 {} 1952 1953 #endif 1954 1955 #ifdef CONFIG_BPF_SYSCALL 1956 union bpf_attr; 1957 struct bpf_map; 1958 struct bpf_prog; 1959 struct bpf_prog_aux; 1960 #ifdef CONFIG_SECURITY 1961 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1962 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1963 extern int security_bpf_prog(struct bpf_prog *prog); 1964 extern int security_bpf_map_alloc(struct bpf_map *map); 1965 extern void security_bpf_map_free(struct bpf_map *map); 1966 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1967 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1968 #else 1969 static inline int security_bpf(int cmd, union bpf_attr *attr, 1970 unsigned int size) 1971 { 1972 return 0; 1973 } 1974 1975 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1976 { 1977 return 0; 1978 } 1979 1980 static inline int security_bpf_prog(struct bpf_prog *prog) 1981 { 1982 return 0; 1983 } 1984 1985 static inline int security_bpf_map_alloc(struct bpf_map *map) 1986 { 1987 return 0; 1988 } 1989 1990 static inline void security_bpf_map_free(struct bpf_map *map) 1991 { } 1992 1993 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 1994 { 1995 return 0; 1996 } 1997 1998 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 1999 { } 2000 #endif /* CONFIG_SECURITY */ 2001 #endif /* CONFIG_BPF_SYSCALL */ 2002 2003 #ifdef CONFIG_PERF_EVENTS 2004 struct perf_event_attr; 2005 struct perf_event; 2006 2007 #ifdef CONFIG_SECURITY 2008 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 2009 extern int security_perf_event_alloc(struct perf_event *event); 2010 extern void security_perf_event_free(struct perf_event *event); 2011 extern int security_perf_event_read(struct perf_event *event); 2012 extern int security_perf_event_write(struct perf_event *event); 2013 #else 2014 static inline int security_perf_event_open(struct perf_event_attr *attr, 2015 int type) 2016 { 2017 return 0; 2018 } 2019 2020 static inline int security_perf_event_alloc(struct perf_event *event) 2021 { 2022 return 0; 2023 } 2024 2025 static inline void security_perf_event_free(struct perf_event *event) 2026 { 2027 } 2028 2029 static inline int security_perf_event_read(struct perf_event *event) 2030 { 2031 return 0; 2032 } 2033 2034 static inline int security_perf_event_write(struct perf_event *event) 2035 { 2036 return 0; 2037 } 2038 #endif /* CONFIG_SECURITY */ 2039 #endif /* CONFIG_PERF_EVENTS */ 2040 2041 #endif /* ! __LINUX_SECURITY_H */ 2042