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 #include <linux/sockptr.h> 35 36 struct linux_binprm; 37 struct cred; 38 struct rlimit; 39 struct kernel_siginfo; 40 struct sembuf; 41 struct kern_ipc_perm; 42 struct audit_context; 43 struct super_block; 44 struct inode; 45 struct dentry; 46 struct file; 47 struct vfsmount; 48 struct path; 49 struct qstr; 50 struct iattr; 51 struct fown_struct; 52 struct file_operations; 53 struct msg_msg; 54 struct xattr; 55 struct kernfs_node; 56 struct xfrm_sec_ctx; 57 struct mm_struct; 58 struct fs_context; 59 struct fs_parameter; 60 enum fs_value_type; 61 struct watch; 62 struct watch_notification; 63 64 /* Default (no) options for the capable function */ 65 #define CAP_OPT_NONE 0x0 66 /* If capable should audit the security request */ 67 #define CAP_OPT_NOAUDIT BIT(1) 68 /* If capable is being called by a setid function */ 69 #define CAP_OPT_INSETID BIT(2) 70 71 /* LSM Agnostic defines for fs_context::lsm_flags */ 72 #define SECURITY_LSM_NATIVE_LABELS 1 73 74 struct ctl_table; 75 struct audit_krule; 76 struct user_namespace; 77 struct timezone; 78 79 enum lsm_event { 80 LSM_POLICY_CHANGE, 81 }; 82 83 /* 84 * These are reasons that can be passed to the security_locked_down() 85 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 86 * ability for userland to modify kernel code) are placed before 87 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 88 * confidentiality (ie, the ability for userland to extract 89 * information from the running kernel that would otherwise be 90 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 91 * 92 * LSM authors should note that the semantics of any given lockdown 93 * reason are not guaranteed to be stable - the same reason may block 94 * one set of features in one kernel release, and a slightly different 95 * set of features in a later kernel release. LSMs that seek to expose 96 * lockdown policy at any level of granularity other than "none", 97 * "integrity" or "confidentiality" are responsible for either 98 * ensuring that they expose a consistent level of functionality to 99 * userland, or ensuring that userland is aware that this is 100 * potentially a moving target. It is easy to misuse this information 101 * in a way that could break userspace. Please be careful not to do 102 * so. 103 * 104 * If you add to this, remember to extend lockdown_reasons in 105 * security/lockdown/lockdown.c. 106 */ 107 enum lockdown_reason { 108 LOCKDOWN_NONE, 109 LOCKDOWN_MODULE_SIGNATURE, 110 LOCKDOWN_DEV_MEM, 111 LOCKDOWN_EFI_TEST, 112 LOCKDOWN_KEXEC, 113 LOCKDOWN_HIBERNATION, 114 LOCKDOWN_PCI_ACCESS, 115 LOCKDOWN_IOPORT, 116 LOCKDOWN_MSR, 117 LOCKDOWN_ACPI_TABLES, 118 LOCKDOWN_DEVICE_TREE, 119 LOCKDOWN_PCMCIA_CIS, 120 LOCKDOWN_TIOCSSERIAL, 121 LOCKDOWN_MODULE_PARAMETERS, 122 LOCKDOWN_MMIOTRACE, 123 LOCKDOWN_DEBUGFS, 124 LOCKDOWN_XMON_WR, 125 LOCKDOWN_BPF_WRITE_USER, 126 LOCKDOWN_DBG_WRITE_KERNEL, 127 LOCKDOWN_RTAS_ERROR_INJECTION, 128 LOCKDOWN_INTEGRITY_MAX, 129 LOCKDOWN_KCORE, 130 LOCKDOWN_KPROBES, 131 LOCKDOWN_BPF_READ_KERNEL, 132 LOCKDOWN_DBG_READ_KERNEL, 133 LOCKDOWN_PERF, 134 LOCKDOWN_TRACEFS, 135 LOCKDOWN_XMON_RW, 136 LOCKDOWN_XFRM_SECRET, 137 LOCKDOWN_CONFIDENTIALITY_MAX, 138 }; 139 140 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 141 142 /* These functions are in security/commoncap.c */ 143 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 144 int cap, unsigned int opts); 145 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 146 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 147 extern int cap_ptrace_traceme(struct task_struct *parent); 148 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); 149 extern int cap_capset(struct cred *new, const struct cred *old, 150 const kernel_cap_t *effective, 151 const kernel_cap_t *inheritable, 152 const kernel_cap_t *permitted); 153 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 154 int cap_inode_setxattr(struct dentry *dentry, const char *name, 155 const void *value, size_t size, int flags); 156 int cap_inode_removexattr(struct user_namespace *mnt_userns, 157 struct dentry *dentry, const char *name); 158 int cap_inode_need_killpriv(struct dentry *dentry); 159 int cap_inode_killpriv(struct user_namespace *mnt_userns, 160 struct dentry *dentry); 161 int cap_inode_getsecurity(struct user_namespace *mnt_userns, 162 struct inode *inode, const char *name, void **buffer, 163 bool alloc); 164 extern int cap_mmap_addr(unsigned long addr); 165 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 166 unsigned long prot, unsigned long flags); 167 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 168 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 169 unsigned long arg4, unsigned long arg5); 170 extern int cap_task_setscheduler(struct task_struct *p); 171 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 172 extern int cap_task_setnice(struct task_struct *p, int nice); 173 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 174 175 struct msghdr; 176 struct sk_buff; 177 struct sock; 178 struct sockaddr; 179 struct socket; 180 struct flowi_common; 181 struct dst_entry; 182 struct xfrm_selector; 183 struct xfrm_policy; 184 struct xfrm_state; 185 struct xfrm_user_sec_ctx; 186 struct seq_file; 187 struct sctp_association; 188 189 #ifdef CONFIG_MMU 190 extern unsigned long mmap_min_addr; 191 extern unsigned long dac_mmap_min_addr; 192 #else 193 #define mmap_min_addr 0UL 194 #define dac_mmap_min_addr 0UL 195 #endif 196 197 /* 198 * Values used in the task_security_ops calls 199 */ 200 /* setuid or setgid, id0 == uid or gid */ 201 #define LSM_SETID_ID 1 202 203 /* setreuid or setregid, id0 == real, id1 == eff */ 204 #define LSM_SETID_RE 2 205 206 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 207 #define LSM_SETID_RES 4 208 209 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 210 #define LSM_SETID_FS 8 211 212 /* Flags for security_task_prlimit(). */ 213 #define LSM_PRLIMIT_READ 1 214 #define LSM_PRLIMIT_WRITE 2 215 216 /* forward declares to avoid warnings */ 217 struct sched_param; 218 struct request_sock; 219 220 /* bprm->unsafe reasons */ 221 #define LSM_UNSAFE_SHARE 1 222 #define LSM_UNSAFE_PTRACE 2 223 #define LSM_UNSAFE_NO_NEW_PRIVS 4 224 225 #ifdef CONFIG_MMU 226 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 227 void *buffer, size_t *lenp, loff_t *ppos); 228 #endif 229 230 /* security_inode_init_security callback function to write xattrs */ 231 typedef int (*initxattrs) (struct inode *inode, 232 const struct xattr *xattr_array, void *fs_data); 233 234 235 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 236 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 237 #define __data_id_stringify(dummy, str) #str, 238 239 enum kernel_load_data_id { 240 __kernel_read_file_id(__data_id_enumify) 241 }; 242 243 static const char * const kernel_load_data_str[] = { 244 __kernel_read_file_id(__data_id_stringify) 245 }; 246 247 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 248 { 249 if ((unsigned)id >= LOADING_MAX_ID) 250 return kernel_load_data_str[LOADING_UNKNOWN]; 251 252 return kernel_load_data_str[id]; 253 } 254 255 #ifdef CONFIG_SECURITY 256 257 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 258 int register_blocking_lsm_notifier(struct notifier_block *nb); 259 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 260 261 /* prototypes */ 262 extern int security_init(void); 263 extern int early_security_init(void); 264 265 /* Security operations */ 266 int security_binder_set_context_mgr(const struct cred *mgr); 267 int security_binder_transaction(const struct cred *from, 268 const struct cred *to); 269 int security_binder_transfer_binder(const struct cred *from, 270 const struct cred *to); 271 int security_binder_transfer_file(const struct cred *from, 272 const struct cred *to, struct file *file); 273 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 274 int security_ptrace_traceme(struct task_struct *parent); 275 int security_capget(struct task_struct *target, 276 kernel_cap_t *effective, 277 kernel_cap_t *inheritable, 278 kernel_cap_t *permitted); 279 int security_capset(struct cred *new, const struct cred *old, 280 const kernel_cap_t *effective, 281 const kernel_cap_t *inheritable, 282 const kernel_cap_t *permitted); 283 int security_capable(const struct cred *cred, 284 struct user_namespace *ns, 285 int cap, 286 unsigned int opts); 287 int security_quotactl(int cmds, int type, int id, struct super_block *sb); 288 int security_quota_on(struct dentry *dentry); 289 int security_syslog(int type); 290 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 291 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 292 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 293 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file); 294 int security_bprm_check(struct linux_binprm *bprm); 295 void security_bprm_committing_creds(struct linux_binprm *bprm); 296 void security_bprm_committed_creds(struct linux_binprm *bprm); 297 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 298 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 299 int security_sb_alloc(struct super_block *sb); 300 void security_sb_delete(struct super_block *sb); 301 void security_sb_free(struct super_block *sb); 302 void security_free_mnt_opts(void **mnt_opts); 303 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 304 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); 305 int security_sb_remount(struct super_block *sb, void *mnt_opts); 306 int security_sb_kern_mount(struct super_block *sb); 307 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 308 int security_sb_statfs(struct dentry *dentry); 309 int security_sb_mount(const char *dev_name, const struct path *path, 310 const char *type, unsigned long flags, void *data); 311 int security_sb_umount(struct vfsmount *mnt, int flags); 312 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 313 int security_sb_set_mnt_opts(struct super_block *sb, 314 void *mnt_opts, 315 unsigned long kern_flags, 316 unsigned long *set_kern_flags); 317 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 318 struct super_block *newsb, 319 unsigned long kern_flags, 320 unsigned long *set_kern_flags); 321 int security_move_mount(const struct path *from_path, const struct path *to_path); 322 int security_dentry_init_security(struct dentry *dentry, int mode, 323 const struct qstr *name, 324 const char **xattr_name, void **ctx, 325 u32 *ctxlen); 326 int security_dentry_create_files_as(struct dentry *dentry, int mode, 327 struct qstr *name, 328 const struct cred *old, 329 struct cred *new); 330 int security_path_notify(const struct path *path, u64 mask, 331 unsigned int obj_type); 332 int security_inode_alloc(struct inode *inode); 333 void security_inode_free(struct inode *inode); 334 int security_inode_init_security(struct inode *inode, struct inode *dir, 335 const struct qstr *qstr, 336 initxattrs initxattrs, void *fs_data); 337 int security_inode_init_security_anon(struct inode *inode, 338 const struct qstr *name, 339 const struct inode *context_inode); 340 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 341 const struct qstr *qstr, const char **name, 342 void **value, size_t *len); 343 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 344 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 345 struct dentry *new_dentry); 346 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 347 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 348 const char *old_name); 349 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 350 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 351 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 352 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 353 struct inode *new_dir, struct dentry *new_dentry, 354 unsigned int flags); 355 int security_inode_readlink(struct dentry *dentry); 356 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 357 bool rcu); 358 int security_inode_permission(struct inode *inode, int mask); 359 int security_inode_setattr(struct user_namespace *mnt_userns, 360 struct dentry *dentry, struct iattr *attr); 361 int security_inode_getattr(const struct path *path); 362 int security_inode_setxattr(struct user_namespace *mnt_userns, 363 struct dentry *dentry, const char *name, 364 const void *value, size_t size, int flags); 365 int security_inode_set_acl(struct user_namespace *mnt_userns, 366 struct dentry *dentry, const char *acl_name, 367 struct posix_acl *kacl); 368 int security_inode_get_acl(struct user_namespace *mnt_userns, 369 struct dentry *dentry, const char *acl_name); 370 int security_inode_remove_acl(struct user_namespace *mnt_userns, 371 struct dentry *dentry, const char *acl_name); 372 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 373 const void *value, size_t size, int flags); 374 int security_inode_getxattr(struct dentry *dentry, const char *name); 375 int security_inode_listxattr(struct dentry *dentry); 376 int security_inode_removexattr(struct user_namespace *mnt_userns, 377 struct dentry *dentry, const char *name); 378 int security_inode_need_killpriv(struct dentry *dentry); 379 int security_inode_killpriv(struct user_namespace *mnt_userns, 380 struct dentry *dentry); 381 int security_inode_getsecurity(struct user_namespace *mnt_userns, 382 struct inode *inode, const char *name, 383 void **buffer, bool alloc); 384 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 385 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 386 void security_inode_getsecid(struct inode *inode, u32 *secid); 387 int security_inode_copy_up(struct dentry *src, struct cred **new); 388 int security_inode_copy_up_xattr(const char *name); 389 int security_kernfs_init_security(struct kernfs_node *kn_dir, 390 struct kernfs_node *kn); 391 int security_file_permission(struct file *file, int mask); 392 int security_file_alloc(struct file *file); 393 void security_file_free(struct file *file); 394 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 395 int security_mmap_file(struct file *file, unsigned long prot, 396 unsigned long flags); 397 int security_mmap_addr(unsigned long addr); 398 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 399 unsigned long prot); 400 int security_file_lock(struct file *file, unsigned int cmd); 401 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 402 void security_file_set_fowner(struct file *file); 403 int security_file_send_sigiotask(struct task_struct *tsk, 404 struct fown_struct *fown, int sig); 405 int security_file_receive(struct file *file); 406 int security_file_open(struct file *file); 407 int security_file_truncate(struct file *file); 408 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 409 void security_task_free(struct task_struct *task); 410 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 411 void security_cred_free(struct cred *cred); 412 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 413 void security_transfer_creds(struct cred *new, const struct cred *old); 414 void security_cred_getsecid(const struct cred *c, u32 *secid); 415 int security_kernel_act_as(struct cred *new, u32 secid); 416 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 417 int security_kernel_module_request(char *kmod_name); 418 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 419 int security_kernel_post_load_data(char *buf, loff_t size, 420 enum kernel_load_data_id id, 421 char *description); 422 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 423 bool contents); 424 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 425 enum kernel_read_file_id id); 426 int security_task_fix_setuid(struct cred *new, const struct cred *old, 427 int flags); 428 int security_task_fix_setgid(struct cred *new, const struct cred *old, 429 int flags); 430 int security_task_fix_setgroups(struct cred *new, const struct cred *old); 431 int security_task_setpgid(struct task_struct *p, pid_t pgid); 432 int security_task_getpgid(struct task_struct *p); 433 int security_task_getsid(struct task_struct *p); 434 void security_current_getsecid_subj(u32 *secid); 435 void security_task_getsecid_obj(struct task_struct *p, u32 *secid); 436 int security_task_setnice(struct task_struct *p, int nice); 437 int security_task_setioprio(struct task_struct *p, int ioprio); 438 int security_task_getioprio(struct task_struct *p); 439 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 440 unsigned int flags); 441 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 442 struct rlimit *new_rlim); 443 int security_task_setscheduler(struct task_struct *p); 444 int security_task_getscheduler(struct task_struct *p); 445 int security_task_movememory(struct task_struct *p); 446 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 447 int sig, const struct cred *cred); 448 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 449 unsigned long arg4, unsigned long arg5); 450 void security_task_to_inode(struct task_struct *p, struct inode *inode); 451 int security_create_user_ns(const struct cred *cred); 452 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 453 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 454 int security_msg_msg_alloc(struct msg_msg *msg); 455 void security_msg_msg_free(struct msg_msg *msg); 456 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 457 void security_msg_queue_free(struct kern_ipc_perm *msq); 458 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 459 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 460 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 461 struct msg_msg *msg, int msqflg); 462 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 463 struct task_struct *target, long type, int mode); 464 int security_shm_alloc(struct kern_ipc_perm *shp); 465 void security_shm_free(struct kern_ipc_perm *shp); 466 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 467 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 468 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 469 int security_sem_alloc(struct kern_ipc_perm *sma); 470 void security_sem_free(struct kern_ipc_perm *sma); 471 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 472 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 473 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 474 unsigned nsops, int alter); 475 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 476 int security_getprocattr(struct task_struct *p, const char *lsm, const char *name, 477 char **value); 478 int security_setprocattr(const char *lsm, const char *name, void *value, 479 size_t size); 480 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 481 int security_ismaclabel(const char *name); 482 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 483 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 484 void security_release_secctx(char *secdata, u32 seclen); 485 void security_inode_invalidate_secctx(struct inode *inode); 486 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 487 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 488 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 489 int security_locked_down(enum lockdown_reason what); 490 #else /* CONFIG_SECURITY */ 491 492 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 493 { 494 return 0; 495 } 496 497 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 498 { 499 return 0; 500 } 501 502 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 503 { 504 return 0; 505 } 506 507 static inline void security_free_mnt_opts(void **mnt_opts) 508 { 509 } 510 511 /* 512 * This is the default capabilities functionality. Most of these functions 513 * are just stubbed out, but a few must call the proper capable code. 514 */ 515 516 static inline int security_init(void) 517 { 518 return 0; 519 } 520 521 static inline int early_security_init(void) 522 { 523 return 0; 524 } 525 526 static inline int security_binder_set_context_mgr(const struct cred *mgr) 527 { 528 return 0; 529 } 530 531 static inline int security_binder_transaction(const struct cred *from, 532 const struct cred *to) 533 { 534 return 0; 535 } 536 537 static inline int security_binder_transfer_binder(const struct cred *from, 538 const struct cred *to) 539 { 540 return 0; 541 } 542 543 static inline int security_binder_transfer_file(const struct cred *from, 544 const struct cred *to, 545 struct file *file) 546 { 547 return 0; 548 } 549 550 static inline int security_ptrace_access_check(struct task_struct *child, 551 unsigned int mode) 552 { 553 return cap_ptrace_access_check(child, mode); 554 } 555 556 static inline int security_ptrace_traceme(struct task_struct *parent) 557 { 558 return cap_ptrace_traceme(parent); 559 } 560 561 static inline int security_capget(struct task_struct *target, 562 kernel_cap_t *effective, 563 kernel_cap_t *inheritable, 564 kernel_cap_t *permitted) 565 { 566 return cap_capget(target, effective, inheritable, permitted); 567 } 568 569 static inline int security_capset(struct cred *new, 570 const struct cred *old, 571 const kernel_cap_t *effective, 572 const kernel_cap_t *inheritable, 573 const kernel_cap_t *permitted) 574 { 575 return cap_capset(new, old, effective, inheritable, permitted); 576 } 577 578 static inline int security_capable(const struct cred *cred, 579 struct user_namespace *ns, 580 int cap, 581 unsigned int opts) 582 { 583 return cap_capable(cred, ns, cap, opts); 584 } 585 586 static inline int security_quotactl(int cmds, int type, int id, 587 struct super_block *sb) 588 { 589 return 0; 590 } 591 592 static inline int security_quota_on(struct dentry *dentry) 593 { 594 return 0; 595 } 596 597 static inline int security_syslog(int type) 598 { 599 return 0; 600 } 601 602 static inline int security_settime64(const struct timespec64 *ts, 603 const struct timezone *tz) 604 { 605 return cap_settime(ts, tz); 606 } 607 608 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 609 { 610 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 611 } 612 613 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 614 { 615 return 0; 616 } 617 618 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 619 struct file *file) 620 { 621 return cap_bprm_creds_from_file(bprm, file); 622 } 623 624 static inline int security_bprm_check(struct linux_binprm *bprm) 625 { 626 return 0; 627 } 628 629 static inline void security_bprm_committing_creds(struct linux_binprm *bprm) 630 { 631 } 632 633 static inline void security_bprm_committed_creds(struct linux_binprm *bprm) 634 { 635 } 636 637 static inline int security_fs_context_dup(struct fs_context *fc, 638 struct fs_context *src_fc) 639 { 640 return 0; 641 } 642 static inline int security_fs_context_parse_param(struct fs_context *fc, 643 struct fs_parameter *param) 644 { 645 return -ENOPARAM; 646 } 647 648 static inline int security_sb_alloc(struct super_block *sb) 649 { 650 return 0; 651 } 652 653 static inline void security_sb_delete(struct super_block *sb) 654 { } 655 656 static inline void security_sb_free(struct super_block *sb) 657 { } 658 659 static inline int security_sb_eat_lsm_opts(char *options, 660 void **mnt_opts) 661 { 662 return 0; 663 } 664 665 static inline int security_sb_remount(struct super_block *sb, 666 void *mnt_opts) 667 { 668 return 0; 669 } 670 671 static inline int security_sb_mnt_opts_compat(struct super_block *sb, 672 void *mnt_opts) 673 { 674 return 0; 675 } 676 677 678 static inline int security_sb_kern_mount(struct super_block *sb) 679 { 680 return 0; 681 } 682 683 static inline int security_sb_show_options(struct seq_file *m, 684 struct super_block *sb) 685 { 686 return 0; 687 } 688 689 static inline int security_sb_statfs(struct dentry *dentry) 690 { 691 return 0; 692 } 693 694 static inline int security_sb_mount(const char *dev_name, const struct path *path, 695 const char *type, unsigned long flags, 696 void *data) 697 { 698 return 0; 699 } 700 701 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 702 { 703 return 0; 704 } 705 706 static inline int security_sb_pivotroot(const struct path *old_path, 707 const struct path *new_path) 708 { 709 return 0; 710 } 711 712 static inline int security_sb_set_mnt_opts(struct super_block *sb, 713 void *mnt_opts, 714 unsigned long kern_flags, 715 unsigned long *set_kern_flags) 716 { 717 return 0; 718 } 719 720 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 721 struct super_block *newsb, 722 unsigned long kern_flags, 723 unsigned long *set_kern_flags) 724 { 725 return 0; 726 } 727 728 static inline int security_move_mount(const struct path *from_path, 729 const struct path *to_path) 730 { 731 return 0; 732 } 733 734 static inline int security_path_notify(const struct path *path, u64 mask, 735 unsigned int obj_type) 736 { 737 return 0; 738 } 739 740 static inline int security_inode_alloc(struct inode *inode) 741 { 742 return 0; 743 } 744 745 static inline void security_inode_free(struct inode *inode) 746 { } 747 748 static inline int security_dentry_init_security(struct dentry *dentry, 749 int mode, 750 const struct qstr *name, 751 const char **xattr_name, 752 void **ctx, 753 u32 *ctxlen) 754 { 755 return -EOPNOTSUPP; 756 } 757 758 static inline int security_dentry_create_files_as(struct dentry *dentry, 759 int mode, struct qstr *name, 760 const struct cred *old, 761 struct cred *new) 762 { 763 return 0; 764 } 765 766 767 static inline int security_inode_init_security(struct inode *inode, 768 struct inode *dir, 769 const struct qstr *qstr, 770 const initxattrs xattrs, 771 void *fs_data) 772 { 773 return 0; 774 } 775 776 static inline int security_inode_init_security_anon(struct inode *inode, 777 const struct qstr *name, 778 const struct inode *context_inode) 779 { 780 return 0; 781 } 782 783 static inline int security_old_inode_init_security(struct inode *inode, 784 struct inode *dir, 785 const struct qstr *qstr, 786 const char **name, 787 void **value, size_t *len) 788 { 789 return -EOPNOTSUPP; 790 } 791 792 static inline int security_inode_create(struct inode *dir, 793 struct dentry *dentry, 794 umode_t mode) 795 { 796 return 0; 797 } 798 799 static inline int security_inode_link(struct dentry *old_dentry, 800 struct inode *dir, 801 struct dentry *new_dentry) 802 { 803 return 0; 804 } 805 806 static inline int security_inode_unlink(struct inode *dir, 807 struct dentry *dentry) 808 { 809 return 0; 810 } 811 812 static inline int security_inode_symlink(struct inode *dir, 813 struct dentry *dentry, 814 const char *old_name) 815 { 816 return 0; 817 } 818 819 static inline int security_inode_mkdir(struct inode *dir, 820 struct dentry *dentry, 821 int mode) 822 { 823 return 0; 824 } 825 826 static inline int security_inode_rmdir(struct inode *dir, 827 struct dentry *dentry) 828 { 829 return 0; 830 } 831 832 static inline int security_inode_mknod(struct inode *dir, 833 struct dentry *dentry, 834 int mode, dev_t dev) 835 { 836 return 0; 837 } 838 839 static inline int security_inode_rename(struct inode *old_dir, 840 struct dentry *old_dentry, 841 struct inode *new_dir, 842 struct dentry *new_dentry, 843 unsigned int flags) 844 { 845 return 0; 846 } 847 848 static inline int security_inode_readlink(struct dentry *dentry) 849 { 850 return 0; 851 } 852 853 static inline int security_inode_follow_link(struct dentry *dentry, 854 struct inode *inode, 855 bool rcu) 856 { 857 return 0; 858 } 859 860 static inline int security_inode_permission(struct inode *inode, int mask) 861 { 862 return 0; 863 } 864 865 static inline int security_inode_setattr(struct user_namespace *mnt_userns, 866 struct dentry *dentry, 867 struct iattr *attr) 868 { 869 return 0; 870 } 871 872 static inline int security_inode_getattr(const struct path *path) 873 { 874 return 0; 875 } 876 877 static inline int security_inode_setxattr(struct user_namespace *mnt_userns, 878 struct dentry *dentry, const char *name, const void *value, 879 size_t size, int flags) 880 { 881 return cap_inode_setxattr(dentry, name, value, size, flags); 882 } 883 884 static inline int security_inode_set_acl(struct user_namespace *mnt_userns, 885 struct dentry *dentry, 886 const char *acl_name, 887 struct posix_acl *kacl) 888 { 889 return 0; 890 } 891 892 static inline int security_inode_get_acl(struct user_namespace *mnt_userns, 893 struct dentry *dentry, 894 const char *acl_name) 895 { 896 return 0; 897 } 898 899 static inline int security_inode_remove_acl(struct user_namespace *mnt_userns, 900 struct dentry *dentry, 901 const char *acl_name) 902 { 903 return 0; 904 } 905 906 static inline void security_inode_post_setxattr(struct dentry *dentry, 907 const char *name, const void *value, size_t size, int flags) 908 { } 909 910 static inline int security_inode_getxattr(struct dentry *dentry, 911 const char *name) 912 { 913 return 0; 914 } 915 916 static inline int security_inode_listxattr(struct dentry *dentry) 917 { 918 return 0; 919 } 920 921 static inline int security_inode_removexattr(struct user_namespace *mnt_userns, 922 struct dentry *dentry, 923 const char *name) 924 { 925 return cap_inode_removexattr(mnt_userns, dentry, name); 926 } 927 928 static inline int security_inode_need_killpriv(struct dentry *dentry) 929 { 930 return cap_inode_need_killpriv(dentry); 931 } 932 933 static inline int security_inode_killpriv(struct user_namespace *mnt_userns, 934 struct dentry *dentry) 935 { 936 return cap_inode_killpriv(mnt_userns, dentry); 937 } 938 939 static inline int security_inode_getsecurity(struct user_namespace *mnt_userns, 940 struct inode *inode, 941 const char *name, void **buffer, 942 bool alloc) 943 { 944 return cap_inode_getsecurity(mnt_userns, inode, name, buffer, alloc); 945 } 946 947 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 948 { 949 return -EOPNOTSUPP; 950 } 951 952 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 953 { 954 return 0; 955 } 956 957 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 958 { 959 *secid = 0; 960 } 961 962 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 963 { 964 return 0; 965 } 966 967 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 968 struct kernfs_node *kn) 969 { 970 return 0; 971 } 972 973 static inline int security_inode_copy_up_xattr(const char *name) 974 { 975 return -EOPNOTSUPP; 976 } 977 978 static inline int security_file_permission(struct file *file, int mask) 979 { 980 return 0; 981 } 982 983 static inline int security_file_alloc(struct file *file) 984 { 985 return 0; 986 } 987 988 static inline void security_file_free(struct file *file) 989 { } 990 991 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 992 unsigned long arg) 993 { 994 return 0; 995 } 996 997 static inline int security_mmap_file(struct file *file, unsigned long prot, 998 unsigned long flags) 999 { 1000 return 0; 1001 } 1002 1003 static inline int security_mmap_addr(unsigned long addr) 1004 { 1005 return cap_mmap_addr(addr); 1006 } 1007 1008 static inline int security_file_mprotect(struct vm_area_struct *vma, 1009 unsigned long reqprot, 1010 unsigned long prot) 1011 { 1012 return 0; 1013 } 1014 1015 static inline int security_file_lock(struct file *file, unsigned int cmd) 1016 { 1017 return 0; 1018 } 1019 1020 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 1021 unsigned long arg) 1022 { 1023 return 0; 1024 } 1025 1026 static inline void security_file_set_fowner(struct file *file) 1027 { 1028 return; 1029 } 1030 1031 static inline int security_file_send_sigiotask(struct task_struct *tsk, 1032 struct fown_struct *fown, 1033 int sig) 1034 { 1035 return 0; 1036 } 1037 1038 static inline int security_file_receive(struct file *file) 1039 { 1040 return 0; 1041 } 1042 1043 static inline int security_file_open(struct file *file) 1044 { 1045 return 0; 1046 } 1047 1048 static inline int security_file_truncate(struct file *file) 1049 { 1050 return 0; 1051 } 1052 1053 static inline int security_task_alloc(struct task_struct *task, 1054 unsigned long clone_flags) 1055 { 1056 return 0; 1057 } 1058 1059 static inline void security_task_free(struct task_struct *task) 1060 { } 1061 1062 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1063 { 1064 return 0; 1065 } 1066 1067 static inline void security_cred_free(struct cred *cred) 1068 { } 1069 1070 static inline int security_prepare_creds(struct cred *new, 1071 const struct cred *old, 1072 gfp_t gfp) 1073 { 1074 return 0; 1075 } 1076 1077 static inline void security_transfer_creds(struct cred *new, 1078 const struct cred *old) 1079 { 1080 } 1081 1082 static inline void security_cred_getsecid(const struct cred *c, u32 *secid) 1083 { 1084 *secid = 0; 1085 } 1086 1087 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1088 { 1089 return 0; 1090 } 1091 1092 static inline int security_kernel_create_files_as(struct cred *cred, 1093 struct inode *inode) 1094 { 1095 return 0; 1096 } 1097 1098 static inline int security_kernel_module_request(char *kmod_name) 1099 { 1100 return 0; 1101 } 1102 1103 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1104 { 1105 return 0; 1106 } 1107 1108 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1109 enum kernel_load_data_id id, 1110 char *description) 1111 { 1112 return 0; 1113 } 1114 1115 static inline int security_kernel_read_file(struct file *file, 1116 enum kernel_read_file_id id, 1117 bool contents) 1118 { 1119 return 0; 1120 } 1121 1122 static inline int security_kernel_post_read_file(struct file *file, 1123 char *buf, loff_t size, 1124 enum kernel_read_file_id id) 1125 { 1126 return 0; 1127 } 1128 1129 static inline int security_task_fix_setuid(struct cred *new, 1130 const struct cred *old, 1131 int flags) 1132 { 1133 return cap_task_fix_setuid(new, old, flags); 1134 } 1135 1136 static inline int security_task_fix_setgid(struct cred *new, 1137 const struct cred *old, 1138 int flags) 1139 { 1140 return 0; 1141 } 1142 1143 static inline int security_task_fix_setgroups(struct cred *new, 1144 const struct cred *old) 1145 { 1146 return 0; 1147 } 1148 1149 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1150 { 1151 return 0; 1152 } 1153 1154 static inline int security_task_getpgid(struct task_struct *p) 1155 { 1156 return 0; 1157 } 1158 1159 static inline int security_task_getsid(struct task_struct *p) 1160 { 1161 return 0; 1162 } 1163 1164 static inline void security_current_getsecid_subj(u32 *secid) 1165 { 1166 *secid = 0; 1167 } 1168 1169 static inline void security_task_getsecid_obj(struct task_struct *p, u32 *secid) 1170 { 1171 *secid = 0; 1172 } 1173 1174 static inline int security_task_setnice(struct task_struct *p, int nice) 1175 { 1176 return cap_task_setnice(p, nice); 1177 } 1178 1179 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1180 { 1181 return cap_task_setioprio(p, ioprio); 1182 } 1183 1184 static inline int security_task_getioprio(struct task_struct *p) 1185 { 1186 return 0; 1187 } 1188 1189 static inline int security_task_prlimit(const struct cred *cred, 1190 const struct cred *tcred, 1191 unsigned int flags) 1192 { 1193 return 0; 1194 } 1195 1196 static inline int security_task_setrlimit(struct task_struct *p, 1197 unsigned int resource, 1198 struct rlimit *new_rlim) 1199 { 1200 return 0; 1201 } 1202 1203 static inline int security_task_setscheduler(struct task_struct *p) 1204 { 1205 return cap_task_setscheduler(p); 1206 } 1207 1208 static inline int security_task_getscheduler(struct task_struct *p) 1209 { 1210 return 0; 1211 } 1212 1213 static inline int security_task_movememory(struct task_struct *p) 1214 { 1215 return 0; 1216 } 1217 1218 static inline int security_task_kill(struct task_struct *p, 1219 struct kernel_siginfo *info, int sig, 1220 const struct cred *cred) 1221 { 1222 return 0; 1223 } 1224 1225 static inline int security_task_prctl(int option, unsigned long arg2, 1226 unsigned long arg3, 1227 unsigned long arg4, 1228 unsigned long arg5) 1229 { 1230 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1231 } 1232 1233 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1234 { } 1235 1236 static inline int security_create_user_ns(const struct cred *cred) 1237 { 1238 return 0; 1239 } 1240 1241 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1242 short flag) 1243 { 1244 return 0; 1245 } 1246 1247 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1248 { 1249 *secid = 0; 1250 } 1251 1252 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1253 { 1254 return 0; 1255 } 1256 1257 static inline void security_msg_msg_free(struct msg_msg *msg) 1258 { } 1259 1260 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1261 { 1262 return 0; 1263 } 1264 1265 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1266 { } 1267 1268 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1269 int msqflg) 1270 { 1271 return 0; 1272 } 1273 1274 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1275 { 1276 return 0; 1277 } 1278 1279 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1280 struct msg_msg *msg, int msqflg) 1281 { 1282 return 0; 1283 } 1284 1285 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1286 struct msg_msg *msg, 1287 struct task_struct *target, 1288 long type, int mode) 1289 { 1290 return 0; 1291 } 1292 1293 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1294 { 1295 return 0; 1296 } 1297 1298 static inline void security_shm_free(struct kern_ipc_perm *shp) 1299 { } 1300 1301 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1302 int shmflg) 1303 { 1304 return 0; 1305 } 1306 1307 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1308 { 1309 return 0; 1310 } 1311 1312 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1313 char __user *shmaddr, int shmflg) 1314 { 1315 return 0; 1316 } 1317 1318 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1319 { 1320 return 0; 1321 } 1322 1323 static inline void security_sem_free(struct kern_ipc_perm *sma) 1324 { } 1325 1326 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1327 { 1328 return 0; 1329 } 1330 1331 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1332 { 1333 return 0; 1334 } 1335 1336 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1337 struct sembuf *sops, unsigned nsops, 1338 int alter) 1339 { 1340 return 0; 1341 } 1342 1343 static inline void security_d_instantiate(struct dentry *dentry, 1344 struct inode *inode) 1345 { } 1346 1347 static inline int security_getprocattr(struct task_struct *p, const char *lsm, 1348 const char *name, char **value) 1349 { 1350 return -EINVAL; 1351 } 1352 1353 static inline int security_setprocattr(const char *lsm, char *name, 1354 void *value, size_t size) 1355 { 1356 return -EINVAL; 1357 } 1358 1359 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1360 { 1361 return 0; 1362 } 1363 1364 static inline int security_ismaclabel(const char *name) 1365 { 1366 return 0; 1367 } 1368 1369 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1370 { 1371 return -EOPNOTSUPP; 1372 } 1373 1374 static inline int security_secctx_to_secid(const char *secdata, 1375 u32 seclen, 1376 u32 *secid) 1377 { 1378 return -EOPNOTSUPP; 1379 } 1380 1381 static inline void security_release_secctx(char *secdata, u32 seclen) 1382 { 1383 } 1384 1385 static inline void security_inode_invalidate_secctx(struct inode *inode) 1386 { 1387 } 1388 1389 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1390 { 1391 return -EOPNOTSUPP; 1392 } 1393 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1394 { 1395 return -EOPNOTSUPP; 1396 } 1397 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1398 { 1399 return -EOPNOTSUPP; 1400 } 1401 static inline int security_locked_down(enum lockdown_reason what) 1402 { 1403 return 0; 1404 } 1405 #endif /* CONFIG_SECURITY */ 1406 1407 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1408 int security_post_notification(const struct cred *w_cred, 1409 const struct cred *cred, 1410 struct watch_notification *n); 1411 #else 1412 static inline int security_post_notification(const struct cred *w_cred, 1413 const struct cred *cred, 1414 struct watch_notification *n) 1415 { 1416 return 0; 1417 } 1418 #endif 1419 1420 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1421 int security_watch_key(struct key *key); 1422 #else 1423 static inline int security_watch_key(struct key *key) 1424 { 1425 return 0; 1426 } 1427 #endif 1428 1429 #ifdef CONFIG_SECURITY_NETWORK 1430 1431 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1432 int security_unix_may_send(struct socket *sock, struct socket *other); 1433 int security_socket_create(int family, int type, int protocol, int kern); 1434 int security_socket_post_create(struct socket *sock, int family, 1435 int type, int protocol, int kern); 1436 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1437 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1438 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1439 int security_socket_listen(struct socket *sock, int backlog); 1440 int security_socket_accept(struct socket *sock, struct socket *newsock); 1441 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1442 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1443 int size, int flags); 1444 int security_socket_getsockname(struct socket *sock); 1445 int security_socket_getpeername(struct socket *sock); 1446 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1447 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1448 int security_socket_shutdown(struct socket *sock, int how); 1449 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1450 int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval, 1451 sockptr_t optlen, unsigned int len); 1452 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1453 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1454 void security_sk_free(struct sock *sk); 1455 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1456 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic); 1457 void security_req_classify_flow(const struct request_sock *req, 1458 struct flowi_common *flic); 1459 void security_sock_graft(struct sock*sk, struct socket *parent); 1460 int security_inet_conn_request(const struct sock *sk, 1461 struct sk_buff *skb, struct request_sock *req); 1462 void security_inet_csk_clone(struct sock *newsk, 1463 const struct request_sock *req); 1464 void security_inet_conn_established(struct sock *sk, 1465 struct sk_buff *skb); 1466 int security_secmark_relabel_packet(u32 secid); 1467 void security_secmark_refcount_inc(void); 1468 void security_secmark_refcount_dec(void); 1469 int security_tun_dev_alloc_security(void **security); 1470 void security_tun_dev_free_security(void *security); 1471 int security_tun_dev_create(void); 1472 int security_tun_dev_attach_queue(void *security); 1473 int security_tun_dev_attach(struct sock *sk, void *security); 1474 int security_tun_dev_open(void *security); 1475 int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb); 1476 int security_sctp_bind_connect(struct sock *sk, int optname, 1477 struct sockaddr *address, int addrlen); 1478 void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, 1479 struct sock *newsk); 1480 int security_sctp_assoc_established(struct sctp_association *asoc, 1481 struct sk_buff *skb); 1482 1483 #else /* CONFIG_SECURITY_NETWORK */ 1484 static inline int security_unix_stream_connect(struct sock *sock, 1485 struct sock *other, 1486 struct sock *newsk) 1487 { 1488 return 0; 1489 } 1490 1491 static inline int security_unix_may_send(struct socket *sock, 1492 struct socket *other) 1493 { 1494 return 0; 1495 } 1496 1497 static inline int security_socket_create(int family, int type, 1498 int protocol, int kern) 1499 { 1500 return 0; 1501 } 1502 1503 static inline int security_socket_post_create(struct socket *sock, 1504 int family, 1505 int type, 1506 int protocol, int kern) 1507 { 1508 return 0; 1509 } 1510 1511 static inline int security_socket_socketpair(struct socket *socka, 1512 struct socket *sockb) 1513 { 1514 return 0; 1515 } 1516 1517 static inline int security_socket_bind(struct socket *sock, 1518 struct sockaddr *address, 1519 int addrlen) 1520 { 1521 return 0; 1522 } 1523 1524 static inline int security_socket_connect(struct socket *sock, 1525 struct sockaddr *address, 1526 int addrlen) 1527 { 1528 return 0; 1529 } 1530 1531 static inline int security_socket_listen(struct socket *sock, int backlog) 1532 { 1533 return 0; 1534 } 1535 1536 static inline int security_socket_accept(struct socket *sock, 1537 struct socket *newsock) 1538 { 1539 return 0; 1540 } 1541 1542 static inline int security_socket_sendmsg(struct socket *sock, 1543 struct msghdr *msg, int size) 1544 { 1545 return 0; 1546 } 1547 1548 static inline int security_socket_recvmsg(struct socket *sock, 1549 struct msghdr *msg, int size, 1550 int flags) 1551 { 1552 return 0; 1553 } 1554 1555 static inline int security_socket_getsockname(struct socket *sock) 1556 { 1557 return 0; 1558 } 1559 1560 static inline int security_socket_getpeername(struct socket *sock) 1561 { 1562 return 0; 1563 } 1564 1565 static inline int security_socket_getsockopt(struct socket *sock, 1566 int level, int optname) 1567 { 1568 return 0; 1569 } 1570 1571 static inline int security_socket_setsockopt(struct socket *sock, 1572 int level, int optname) 1573 { 1574 return 0; 1575 } 1576 1577 static inline int security_socket_shutdown(struct socket *sock, int how) 1578 { 1579 return 0; 1580 } 1581 static inline int security_sock_rcv_skb(struct sock *sk, 1582 struct sk_buff *skb) 1583 { 1584 return 0; 1585 } 1586 1587 static inline int security_socket_getpeersec_stream(struct socket *sock, 1588 sockptr_t optval, 1589 sockptr_t optlen, 1590 unsigned int len) 1591 { 1592 return -ENOPROTOOPT; 1593 } 1594 1595 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1596 { 1597 return -ENOPROTOOPT; 1598 } 1599 1600 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1601 { 1602 return 0; 1603 } 1604 1605 static inline void security_sk_free(struct sock *sk) 1606 { 1607 } 1608 1609 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1610 { 1611 } 1612 1613 static inline void security_sk_classify_flow(struct sock *sk, 1614 struct flowi_common *flic) 1615 { 1616 } 1617 1618 static inline void security_req_classify_flow(const struct request_sock *req, 1619 struct flowi_common *flic) 1620 { 1621 } 1622 1623 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1624 { 1625 } 1626 1627 static inline int security_inet_conn_request(const struct sock *sk, 1628 struct sk_buff *skb, struct request_sock *req) 1629 { 1630 return 0; 1631 } 1632 1633 static inline void security_inet_csk_clone(struct sock *newsk, 1634 const struct request_sock *req) 1635 { 1636 } 1637 1638 static inline void security_inet_conn_established(struct sock *sk, 1639 struct sk_buff *skb) 1640 { 1641 } 1642 1643 static inline int security_secmark_relabel_packet(u32 secid) 1644 { 1645 return 0; 1646 } 1647 1648 static inline void security_secmark_refcount_inc(void) 1649 { 1650 } 1651 1652 static inline void security_secmark_refcount_dec(void) 1653 { 1654 } 1655 1656 static inline int security_tun_dev_alloc_security(void **security) 1657 { 1658 return 0; 1659 } 1660 1661 static inline void security_tun_dev_free_security(void *security) 1662 { 1663 } 1664 1665 static inline int security_tun_dev_create(void) 1666 { 1667 return 0; 1668 } 1669 1670 static inline int security_tun_dev_attach_queue(void *security) 1671 { 1672 return 0; 1673 } 1674 1675 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1676 { 1677 return 0; 1678 } 1679 1680 static inline int security_tun_dev_open(void *security) 1681 { 1682 return 0; 1683 } 1684 1685 static inline int security_sctp_assoc_request(struct sctp_association *asoc, 1686 struct sk_buff *skb) 1687 { 1688 return 0; 1689 } 1690 1691 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1692 struct sockaddr *address, 1693 int addrlen) 1694 { 1695 return 0; 1696 } 1697 1698 static inline void security_sctp_sk_clone(struct sctp_association *asoc, 1699 struct sock *sk, 1700 struct sock *newsk) 1701 { 1702 } 1703 1704 static inline int security_sctp_assoc_established(struct sctp_association *asoc, 1705 struct sk_buff *skb) 1706 { 1707 return 0; 1708 } 1709 #endif /* CONFIG_SECURITY_NETWORK */ 1710 1711 #ifdef CONFIG_SECURITY_INFINIBAND 1712 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1713 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1714 int security_ib_alloc_security(void **sec); 1715 void security_ib_free_security(void *sec); 1716 #else /* CONFIG_SECURITY_INFINIBAND */ 1717 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1718 { 1719 return 0; 1720 } 1721 1722 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1723 { 1724 return 0; 1725 } 1726 1727 static inline int security_ib_alloc_security(void **sec) 1728 { 1729 return 0; 1730 } 1731 1732 static inline void security_ib_free_security(void *sec) 1733 { 1734 } 1735 #endif /* CONFIG_SECURITY_INFINIBAND */ 1736 1737 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1738 1739 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1740 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1741 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1742 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1743 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1744 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1745 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1746 struct xfrm_sec_ctx *polsec, u32 secid); 1747 int security_xfrm_state_delete(struct xfrm_state *x); 1748 void security_xfrm_state_free(struct xfrm_state *x); 1749 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); 1750 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1751 struct xfrm_policy *xp, 1752 const struct flowi_common *flic); 1753 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1754 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1755 1756 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1757 1758 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1759 struct xfrm_user_sec_ctx *sec_ctx, 1760 gfp_t gfp) 1761 { 1762 return 0; 1763 } 1764 1765 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1766 { 1767 return 0; 1768 } 1769 1770 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1771 { 1772 } 1773 1774 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1775 { 1776 return 0; 1777 } 1778 1779 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1780 struct xfrm_user_sec_ctx *sec_ctx) 1781 { 1782 return 0; 1783 } 1784 1785 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1786 struct xfrm_sec_ctx *polsec, u32 secid) 1787 { 1788 return 0; 1789 } 1790 1791 static inline void security_xfrm_state_free(struct xfrm_state *x) 1792 { 1793 } 1794 1795 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1796 { 1797 return 0; 1798 } 1799 1800 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) 1801 { 1802 return 0; 1803 } 1804 1805 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1806 struct xfrm_policy *xp, 1807 const struct flowi_common *flic) 1808 { 1809 return 1; 1810 } 1811 1812 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1813 { 1814 return 0; 1815 } 1816 1817 static inline void security_skb_classify_flow(struct sk_buff *skb, 1818 struct flowi_common *flic) 1819 { 1820 } 1821 1822 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1823 1824 #ifdef CONFIG_SECURITY_PATH 1825 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1826 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1827 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1828 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1829 unsigned int dev); 1830 int security_path_truncate(const struct path *path); 1831 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1832 const char *old_name); 1833 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1834 struct dentry *new_dentry); 1835 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1836 const struct path *new_dir, struct dentry *new_dentry, 1837 unsigned int flags); 1838 int security_path_chmod(const struct path *path, umode_t mode); 1839 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1840 int security_path_chroot(const struct path *path); 1841 #else /* CONFIG_SECURITY_PATH */ 1842 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1843 { 1844 return 0; 1845 } 1846 1847 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1848 umode_t mode) 1849 { 1850 return 0; 1851 } 1852 1853 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1854 { 1855 return 0; 1856 } 1857 1858 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1859 umode_t mode, unsigned int dev) 1860 { 1861 return 0; 1862 } 1863 1864 static inline int security_path_truncate(const struct path *path) 1865 { 1866 return 0; 1867 } 1868 1869 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1870 const char *old_name) 1871 { 1872 return 0; 1873 } 1874 1875 static inline int security_path_link(struct dentry *old_dentry, 1876 const struct path *new_dir, 1877 struct dentry *new_dentry) 1878 { 1879 return 0; 1880 } 1881 1882 static inline int security_path_rename(const struct path *old_dir, 1883 struct dentry *old_dentry, 1884 const struct path *new_dir, 1885 struct dentry *new_dentry, 1886 unsigned int flags) 1887 { 1888 return 0; 1889 } 1890 1891 static inline int security_path_chmod(const struct path *path, umode_t mode) 1892 { 1893 return 0; 1894 } 1895 1896 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1897 { 1898 return 0; 1899 } 1900 1901 static inline int security_path_chroot(const struct path *path) 1902 { 1903 return 0; 1904 } 1905 #endif /* CONFIG_SECURITY_PATH */ 1906 1907 #ifdef CONFIG_KEYS 1908 #ifdef CONFIG_SECURITY 1909 1910 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1911 void security_key_free(struct key *key); 1912 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1913 enum key_need_perm need_perm); 1914 int security_key_getsecurity(struct key *key, char **_buffer); 1915 1916 #else 1917 1918 static inline int security_key_alloc(struct key *key, 1919 const struct cred *cred, 1920 unsigned long flags) 1921 { 1922 return 0; 1923 } 1924 1925 static inline void security_key_free(struct key *key) 1926 { 1927 } 1928 1929 static inline int security_key_permission(key_ref_t key_ref, 1930 const struct cred *cred, 1931 enum key_need_perm need_perm) 1932 { 1933 return 0; 1934 } 1935 1936 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1937 { 1938 *_buffer = NULL; 1939 return 0; 1940 } 1941 1942 #endif 1943 #endif /* CONFIG_KEYS */ 1944 1945 #ifdef CONFIG_AUDIT 1946 #ifdef CONFIG_SECURITY 1947 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1948 int security_audit_rule_known(struct audit_krule *krule); 1949 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1950 void security_audit_rule_free(void *lsmrule); 1951 1952 #else 1953 1954 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1955 void **lsmrule) 1956 { 1957 return 0; 1958 } 1959 1960 static inline int security_audit_rule_known(struct audit_krule *krule) 1961 { 1962 return 0; 1963 } 1964 1965 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1966 void *lsmrule) 1967 { 1968 return 0; 1969 } 1970 1971 static inline void security_audit_rule_free(void *lsmrule) 1972 { } 1973 1974 #endif /* CONFIG_SECURITY */ 1975 #endif /* CONFIG_AUDIT */ 1976 1977 #ifdef CONFIG_SECURITYFS 1978 1979 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1980 struct dentry *parent, void *data, 1981 const struct file_operations *fops); 1982 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1983 struct dentry *securityfs_create_symlink(const char *name, 1984 struct dentry *parent, 1985 const char *target, 1986 const struct inode_operations *iops); 1987 extern void securityfs_remove(struct dentry *dentry); 1988 1989 #else /* CONFIG_SECURITYFS */ 1990 1991 static inline struct dentry *securityfs_create_dir(const char *name, 1992 struct dentry *parent) 1993 { 1994 return ERR_PTR(-ENODEV); 1995 } 1996 1997 static inline struct dentry *securityfs_create_file(const char *name, 1998 umode_t mode, 1999 struct dentry *parent, 2000 void *data, 2001 const struct file_operations *fops) 2002 { 2003 return ERR_PTR(-ENODEV); 2004 } 2005 2006 static inline struct dentry *securityfs_create_symlink(const char *name, 2007 struct dentry *parent, 2008 const char *target, 2009 const struct inode_operations *iops) 2010 { 2011 return ERR_PTR(-ENODEV); 2012 } 2013 2014 static inline void securityfs_remove(struct dentry *dentry) 2015 {} 2016 2017 #endif 2018 2019 #ifdef CONFIG_BPF_SYSCALL 2020 union bpf_attr; 2021 struct bpf_map; 2022 struct bpf_prog; 2023 struct bpf_prog_aux; 2024 #ifdef CONFIG_SECURITY 2025 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 2026 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 2027 extern int security_bpf_prog(struct bpf_prog *prog); 2028 extern int security_bpf_map_alloc(struct bpf_map *map); 2029 extern void security_bpf_map_free(struct bpf_map *map); 2030 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 2031 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 2032 #else 2033 static inline int security_bpf(int cmd, union bpf_attr *attr, 2034 unsigned int size) 2035 { 2036 return 0; 2037 } 2038 2039 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 2040 { 2041 return 0; 2042 } 2043 2044 static inline int security_bpf_prog(struct bpf_prog *prog) 2045 { 2046 return 0; 2047 } 2048 2049 static inline int security_bpf_map_alloc(struct bpf_map *map) 2050 { 2051 return 0; 2052 } 2053 2054 static inline void security_bpf_map_free(struct bpf_map *map) 2055 { } 2056 2057 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 2058 { 2059 return 0; 2060 } 2061 2062 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 2063 { } 2064 #endif /* CONFIG_SECURITY */ 2065 #endif /* CONFIG_BPF_SYSCALL */ 2066 2067 #ifdef CONFIG_PERF_EVENTS 2068 struct perf_event_attr; 2069 struct perf_event; 2070 2071 #ifdef CONFIG_SECURITY 2072 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 2073 extern int security_perf_event_alloc(struct perf_event *event); 2074 extern void security_perf_event_free(struct perf_event *event); 2075 extern int security_perf_event_read(struct perf_event *event); 2076 extern int security_perf_event_write(struct perf_event *event); 2077 #else 2078 static inline int security_perf_event_open(struct perf_event_attr *attr, 2079 int type) 2080 { 2081 return 0; 2082 } 2083 2084 static inline int security_perf_event_alloc(struct perf_event *event) 2085 { 2086 return 0; 2087 } 2088 2089 static inline void security_perf_event_free(struct perf_event *event) 2090 { 2091 } 2092 2093 static inline int security_perf_event_read(struct perf_event *event) 2094 { 2095 return 0; 2096 } 2097 2098 static inline int security_perf_event_write(struct perf_event *event) 2099 { 2100 return 0; 2101 } 2102 #endif /* CONFIG_SECURITY */ 2103 #endif /* CONFIG_PERF_EVENTS */ 2104 2105 #ifdef CONFIG_IO_URING 2106 #ifdef CONFIG_SECURITY 2107 extern int security_uring_override_creds(const struct cred *new); 2108 extern int security_uring_sqpoll(void); 2109 extern int security_uring_cmd(struct io_uring_cmd *ioucmd); 2110 #else 2111 static inline int security_uring_override_creds(const struct cred *new) 2112 { 2113 return 0; 2114 } 2115 static inline int security_uring_sqpoll(void) 2116 { 2117 return 0; 2118 } 2119 static inline int security_uring_cmd(struct io_uring_cmd *ioucmd) 2120 { 2121 return 0; 2122 } 2123 #endif /* CONFIG_SECURITY */ 2124 #endif /* CONFIG_IO_URING */ 2125 2126 #endif /* ! __LINUX_SECURITY_H */ 2127