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 #include <uapi/linux/lsm.h> 36 37 struct linux_binprm; 38 struct cred; 39 struct rlimit; 40 struct kernel_siginfo; 41 struct sembuf; 42 struct kern_ipc_perm; 43 struct audit_context; 44 struct super_block; 45 struct inode; 46 struct dentry; 47 struct file; 48 struct vfsmount; 49 struct path; 50 struct qstr; 51 struct iattr; 52 struct fown_struct; 53 struct file_operations; 54 struct msg_msg; 55 struct xattr; 56 struct kernfs_node; 57 struct xfrm_sec_ctx; 58 struct mm_struct; 59 struct fs_context; 60 struct fs_parameter; 61 enum fs_value_type; 62 struct watch; 63 struct watch_notification; 64 struct lsm_ctx; 65 66 /* Default (no) options for the capable function */ 67 #define CAP_OPT_NONE 0x0 68 /* If capable should audit the security request */ 69 #define CAP_OPT_NOAUDIT BIT(1) 70 /* If capable is being called by a setid function */ 71 #define CAP_OPT_INSETID BIT(2) 72 73 /* LSM Agnostic defines for security_sb_set_mnt_opts() flags */ 74 #define SECURITY_LSM_NATIVE_LABELS 1 75 76 struct ctl_table; 77 struct audit_krule; 78 struct user_namespace; 79 struct timezone; 80 81 enum lsm_event { 82 LSM_POLICY_CHANGE, 83 }; 84 85 /* 86 * These are reasons that can be passed to the security_locked_down() 87 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 88 * ability for userland to modify kernel code) are placed before 89 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 90 * confidentiality (ie, the ability for userland to extract 91 * information from the running kernel that would otherwise be 92 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 93 * 94 * LSM authors should note that the semantics of any given lockdown 95 * reason are not guaranteed to be stable - the same reason may block 96 * one set of features in one kernel release, and a slightly different 97 * set of features in a later kernel release. LSMs that seek to expose 98 * lockdown policy at any level of granularity other than "none", 99 * "integrity" or "confidentiality" are responsible for either 100 * ensuring that they expose a consistent level of functionality to 101 * userland, or ensuring that userland is aware that this is 102 * potentially a moving target. It is easy to misuse this information 103 * in a way that could break userspace. Please be careful not to do 104 * so. 105 * 106 * If you add to this, remember to extend lockdown_reasons in 107 * security/lockdown/lockdown.c. 108 */ 109 enum lockdown_reason { 110 LOCKDOWN_NONE, 111 LOCKDOWN_MODULE_SIGNATURE, 112 LOCKDOWN_DEV_MEM, 113 LOCKDOWN_EFI_TEST, 114 LOCKDOWN_KEXEC, 115 LOCKDOWN_HIBERNATION, 116 LOCKDOWN_PCI_ACCESS, 117 LOCKDOWN_IOPORT, 118 LOCKDOWN_MSR, 119 LOCKDOWN_ACPI_TABLES, 120 LOCKDOWN_DEVICE_TREE, 121 LOCKDOWN_PCMCIA_CIS, 122 LOCKDOWN_TIOCSSERIAL, 123 LOCKDOWN_MODULE_PARAMETERS, 124 LOCKDOWN_MMIOTRACE, 125 LOCKDOWN_DEBUGFS, 126 LOCKDOWN_XMON_WR, 127 LOCKDOWN_BPF_WRITE_USER, 128 LOCKDOWN_DBG_WRITE_KERNEL, 129 LOCKDOWN_RTAS_ERROR_INJECTION, 130 LOCKDOWN_INTEGRITY_MAX, 131 LOCKDOWN_KCORE, 132 LOCKDOWN_KPROBES, 133 LOCKDOWN_BPF_READ_KERNEL, 134 LOCKDOWN_DBG_READ_KERNEL, 135 LOCKDOWN_PERF, 136 LOCKDOWN_TRACEFS, 137 LOCKDOWN_XMON_RW, 138 LOCKDOWN_XFRM_SECRET, 139 LOCKDOWN_CONFIDENTIALITY_MAX, 140 }; 141 142 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 143 extern u32 lsm_active_cnt; 144 extern const struct lsm_id *lsm_idlist[]; 145 146 /* These functions are in security/commoncap.c */ 147 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 148 int cap, unsigned int opts); 149 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 150 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 151 extern int cap_ptrace_traceme(struct task_struct *parent); 152 extern int cap_capget(const struct task_struct *target, kernel_cap_t *effective, 153 kernel_cap_t *inheritable, kernel_cap_t *permitted); 154 extern int cap_capset(struct cred *new, const struct cred *old, 155 const kernel_cap_t *effective, 156 const kernel_cap_t *inheritable, 157 const kernel_cap_t *permitted); 158 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file); 159 int cap_inode_setxattr(struct dentry *dentry, const char *name, 160 const void *value, size_t size, int flags); 161 int cap_inode_removexattr(struct mnt_idmap *idmap, 162 struct dentry *dentry, const char *name); 163 int cap_inode_need_killpriv(struct dentry *dentry); 164 int cap_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); 165 int cap_inode_getsecurity(struct mnt_idmap *idmap, 166 struct inode *inode, const char *name, void **buffer, 167 bool alloc); 168 extern int cap_mmap_addr(unsigned long addr); 169 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 170 unsigned long prot, unsigned long flags); 171 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 172 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 173 unsigned long arg4, unsigned long arg5); 174 extern int cap_task_setscheduler(struct task_struct *p); 175 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 176 extern int cap_task_setnice(struct task_struct *p, int nice); 177 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 178 179 struct msghdr; 180 struct sk_buff; 181 struct sock; 182 struct sockaddr; 183 struct socket; 184 struct flowi_common; 185 struct dst_entry; 186 struct xfrm_selector; 187 struct xfrm_policy; 188 struct xfrm_state; 189 struct xfrm_user_sec_ctx; 190 struct seq_file; 191 struct sctp_association; 192 193 #ifdef CONFIG_MMU 194 extern unsigned long mmap_min_addr; 195 extern unsigned long dac_mmap_min_addr; 196 #else 197 #define mmap_min_addr 0UL 198 #define dac_mmap_min_addr 0UL 199 #endif 200 201 /* 202 * Values used in the task_security_ops calls 203 */ 204 /* setuid or setgid, id0 == uid or gid */ 205 #define LSM_SETID_ID 1 206 207 /* setreuid or setregid, id0 == real, id1 == eff */ 208 #define LSM_SETID_RE 2 209 210 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 211 #define LSM_SETID_RES 4 212 213 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 214 #define LSM_SETID_FS 8 215 216 /* Flags for security_task_prlimit(). */ 217 #define LSM_PRLIMIT_READ 1 218 #define LSM_PRLIMIT_WRITE 2 219 220 /* forward declares to avoid warnings */ 221 struct sched_param; 222 struct request_sock; 223 224 /* bprm->unsafe reasons */ 225 #define LSM_UNSAFE_SHARE 1 226 #define LSM_UNSAFE_PTRACE 2 227 #define LSM_UNSAFE_NO_NEW_PRIVS 4 228 229 #ifdef CONFIG_MMU 230 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 231 void *buffer, size_t *lenp, loff_t *ppos); 232 #endif 233 234 /* security_inode_init_security callback function to write xattrs */ 235 typedef int (*initxattrs) (struct inode *inode, 236 const struct xattr *xattr_array, void *fs_data); 237 238 239 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 240 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 241 #define __data_id_stringify(dummy, str) #str, 242 243 enum kernel_load_data_id { 244 __kernel_read_file_id(__data_id_enumify) 245 }; 246 247 static const char * const kernel_load_data_str[] = { 248 __kernel_read_file_id(__data_id_stringify) 249 }; 250 251 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 252 { 253 if ((unsigned)id >= LOADING_MAX_ID) 254 return kernel_load_data_str[LOADING_UNKNOWN]; 255 256 return kernel_load_data_str[id]; 257 } 258 259 #ifdef CONFIG_SECURITY 260 261 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 262 int register_blocking_lsm_notifier(struct notifier_block *nb); 263 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 264 265 /* prototypes */ 266 extern int security_init(void); 267 extern int early_security_init(void); 268 extern u64 lsm_name_to_attr(const char *name); 269 270 /* Security operations */ 271 int security_binder_set_context_mgr(const struct cred *mgr); 272 int security_binder_transaction(const struct cred *from, 273 const struct cred *to); 274 int security_binder_transfer_binder(const struct cred *from, 275 const struct cred *to); 276 int security_binder_transfer_file(const struct cred *from, 277 const struct cred *to, const struct file *file); 278 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 279 int security_ptrace_traceme(struct task_struct *parent); 280 int security_capget(const struct task_struct *target, 281 kernel_cap_t *effective, 282 kernel_cap_t *inheritable, 283 kernel_cap_t *permitted); 284 int security_capset(struct cred *new, const struct cred *old, 285 const kernel_cap_t *effective, 286 const kernel_cap_t *inheritable, 287 const kernel_cap_t *permitted); 288 int security_capable(const struct cred *cred, 289 struct user_namespace *ns, 290 int cap, 291 unsigned int opts); 292 int security_quotactl(int cmds, int type, int id, const struct super_block *sb); 293 int security_quota_on(struct dentry *dentry); 294 int security_syslog(int type); 295 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 296 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 297 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 298 int security_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file); 299 int security_bprm_check(struct linux_binprm *bprm); 300 void security_bprm_committing_creds(const struct linux_binprm *bprm); 301 void security_bprm_committed_creds(const struct linux_binprm *bprm); 302 int security_fs_context_submount(struct fs_context *fc, struct super_block *reference); 303 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 304 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 305 int security_sb_alloc(struct super_block *sb); 306 void security_sb_delete(struct super_block *sb); 307 void security_sb_free(struct super_block *sb); 308 void security_free_mnt_opts(void **mnt_opts); 309 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 310 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); 311 int security_sb_remount(struct super_block *sb, void *mnt_opts); 312 int security_sb_kern_mount(const struct super_block *sb); 313 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 314 int security_sb_statfs(struct dentry *dentry); 315 int security_sb_mount(const char *dev_name, const struct path *path, 316 const char *type, unsigned long flags, void *data); 317 int security_sb_umount(struct vfsmount *mnt, int flags); 318 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 319 int security_sb_set_mnt_opts(struct super_block *sb, 320 void *mnt_opts, 321 unsigned long kern_flags, 322 unsigned long *set_kern_flags); 323 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 324 struct super_block *newsb, 325 unsigned long kern_flags, 326 unsigned long *set_kern_flags); 327 int security_move_mount(const struct path *from_path, const struct path *to_path); 328 int security_dentry_init_security(struct dentry *dentry, int mode, 329 const struct qstr *name, 330 const char **xattr_name, void **ctx, 331 u32 *ctxlen); 332 int security_dentry_create_files_as(struct dentry *dentry, int mode, 333 struct qstr *name, 334 const struct cred *old, 335 struct cred *new); 336 int security_path_notify(const struct path *path, u64 mask, 337 unsigned int obj_type); 338 int security_inode_alloc(struct inode *inode); 339 void security_inode_free(struct inode *inode); 340 int security_inode_init_security(struct inode *inode, struct inode *dir, 341 const struct qstr *qstr, 342 initxattrs initxattrs, void *fs_data); 343 int security_inode_init_security_anon(struct inode *inode, 344 const struct qstr *name, 345 const struct inode *context_inode); 346 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 347 void security_inode_post_create_tmpfile(struct mnt_idmap *idmap, 348 struct inode *inode); 349 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 350 struct dentry *new_dentry); 351 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 352 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 353 const char *old_name); 354 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 355 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 356 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 357 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 358 struct inode *new_dir, struct dentry *new_dentry, 359 unsigned int flags); 360 int security_inode_readlink(struct dentry *dentry); 361 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 362 bool rcu); 363 int security_inode_permission(struct inode *inode, int mask); 364 int security_inode_setattr(struct mnt_idmap *idmap, 365 struct dentry *dentry, struct iattr *attr); 366 void security_inode_post_setattr(struct mnt_idmap *idmap, struct dentry *dentry, 367 int ia_valid); 368 int security_inode_getattr(const struct path *path); 369 int security_inode_setxattr(struct mnt_idmap *idmap, 370 struct dentry *dentry, const char *name, 371 const void *value, size_t size, int flags); 372 int security_inode_set_acl(struct mnt_idmap *idmap, 373 struct dentry *dentry, const char *acl_name, 374 struct posix_acl *kacl); 375 void security_inode_post_set_acl(struct dentry *dentry, const char *acl_name, 376 struct posix_acl *kacl); 377 int security_inode_get_acl(struct mnt_idmap *idmap, 378 struct dentry *dentry, const char *acl_name); 379 int security_inode_remove_acl(struct mnt_idmap *idmap, 380 struct dentry *dentry, const char *acl_name); 381 void security_inode_post_remove_acl(struct mnt_idmap *idmap, 382 struct dentry *dentry, 383 const char *acl_name); 384 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 385 const void *value, size_t size, int flags); 386 int security_inode_getxattr(struct dentry *dentry, const char *name); 387 int security_inode_listxattr(struct dentry *dentry); 388 int security_inode_removexattr(struct mnt_idmap *idmap, 389 struct dentry *dentry, const char *name); 390 void security_inode_post_removexattr(struct dentry *dentry, const char *name); 391 int security_inode_need_killpriv(struct dentry *dentry); 392 int security_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); 393 int security_inode_getsecurity(struct mnt_idmap *idmap, 394 struct inode *inode, const char *name, 395 void **buffer, bool alloc); 396 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 397 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 398 void security_inode_getsecid(struct inode *inode, u32 *secid); 399 int security_inode_copy_up(struct dentry *src, struct cred **new); 400 int security_inode_copy_up_xattr(const char *name); 401 int security_kernfs_init_security(struct kernfs_node *kn_dir, 402 struct kernfs_node *kn); 403 int security_file_permission(struct file *file, int mask); 404 int security_file_alloc(struct file *file); 405 void security_file_release(struct file *file); 406 void security_file_free(struct file *file); 407 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 408 int security_file_ioctl_compat(struct file *file, unsigned int cmd, 409 unsigned long arg); 410 int security_mmap_file(struct file *file, unsigned long prot, 411 unsigned long flags); 412 int security_mmap_addr(unsigned long addr); 413 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 414 unsigned long prot); 415 int security_file_lock(struct file *file, unsigned int cmd); 416 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 417 void security_file_set_fowner(struct file *file); 418 int security_file_send_sigiotask(struct task_struct *tsk, 419 struct fown_struct *fown, int sig); 420 int security_file_receive(struct file *file); 421 int security_file_open(struct file *file); 422 int security_file_post_open(struct file *file, int mask); 423 int security_file_truncate(struct file *file); 424 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 425 void security_task_free(struct task_struct *task); 426 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 427 void security_cred_free(struct cred *cred); 428 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 429 void security_transfer_creds(struct cred *new, const struct cred *old); 430 void security_cred_getsecid(const struct cred *c, u32 *secid); 431 int security_kernel_act_as(struct cred *new, u32 secid); 432 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 433 int security_kernel_module_request(char *kmod_name); 434 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 435 int security_kernel_post_load_data(char *buf, loff_t size, 436 enum kernel_load_data_id id, 437 char *description); 438 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 439 bool contents); 440 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 441 enum kernel_read_file_id id); 442 int security_task_fix_setuid(struct cred *new, const struct cred *old, 443 int flags); 444 int security_task_fix_setgid(struct cred *new, const struct cred *old, 445 int flags); 446 int security_task_fix_setgroups(struct cred *new, const struct cred *old); 447 int security_task_setpgid(struct task_struct *p, pid_t pgid); 448 int security_task_getpgid(struct task_struct *p); 449 int security_task_getsid(struct task_struct *p); 450 void security_current_getsecid_subj(u32 *secid); 451 void security_task_getsecid_obj(struct task_struct *p, u32 *secid); 452 int security_task_setnice(struct task_struct *p, int nice); 453 int security_task_setioprio(struct task_struct *p, int ioprio); 454 int security_task_getioprio(struct task_struct *p); 455 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 456 unsigned int flags); 457 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 458 struct rlimit *new_rlim); 459 int security_task_setscheduler(struct task_struct *p); 460 int security_task_getscheduler(struct task_struct *p); 461 int security_task_movememory(struct task_struct *p); 462 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 463 int sig, const struct cred *cred); 464 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 465 unsigned long arg4, unsigned long arg5); 466 void security_task_to_inode(struct task_struct *p, struct inode *inode); 467 int security_create_user_ns(const struct cred *cred); 468 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 469 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 470 int security_msg_msg_alloc(struct msg_msg *msg); 471 void security_msg_msg_free(struct msg_msg *msg); 472 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 473 void security_msg_queue_free(struct kern_ipc_perm *msq); 474 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 475 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 476 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 477 struct msg_msg *msg, int msqflg); 478 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 479 struct task_struct *target, long type, int mode); 480 int security_shm_alloc(struct kern_ipc_perm *shp); 481 void security_shm_free(struct kern_ipc_perm *shp); 482 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 483 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 484 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 485 int security_sem_alloc(struct kern_ipc_perm *sma); 486 void security_sem_free(struct kern_ipc_perm *sma); 487 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 488 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 489 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 490 unsigned nsops, int alter); 491 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 492 int security_getselfattr(unsigned int attr, struct lsm_ctx __user *ctx, 493 size_t __user *size, u32 flags); 494 int security_setselfattr(unsigned int attr, struct lsm_ctx __user *ctx, 495 size_t size, u32 flags); 496 int security_getprocattr(struct task_struct *p, int lsmid, const char *name, 497 char **value); 498 int security_setprocattr(int lsmid, const char *name, void *value, size_t size); 499 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 500 int security_ismaclabel(const char *name); 501 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 502 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 503 void security_release_secctx(char *secdata, u32 seclen); 504 void security_inode_invalidate_secctx(struct inode *inode); 505 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 506 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 507 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 508 int security_locked_down(enum lockdown_reason what); 509 int lsm_fill_user_ctx(struct lsm_ctx __user *uctx, size_t *uctx_len, 510 void *val, size_t val_len, u64 id, u64 flags); 511 #else /* CONFIG_SECURITY */ 512 513 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 514 { 515 return 0; 516 } 517 518 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 519 { 520 return 0; 521 } 522 523 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 524 { 525 return 0; 526 } 527 528 static inline u64 lsm_name_to_attr(const char *name) 529 { 530 return LSM_ATTR_UNDEF; 531 } 532 533 static inline void security_free_mnt_opts(void **mnt_opts) 534 { 535 } 536 537 /* 538 * This is the default capabilities functionality. Most of these functions 539 * are just stubbed out, but a few must call the proper capable code. 540 */ 541 542 static inline int security_init(void) 543 { 544 return 0; 545 } 546 547 static inline int early_security_init(void) 548 { 549 return 0; 550 } 551 552 static inline int security_binder_set_context_mgr(const struct cred *mgr) 553 { 554 return 0; 555 } 556 557 static inline int security_binder_transaction(const struct cred *from, 558 const struct cred *to) 559 { 560 return 0; 561 } 562 563 static inline int security_binder_transfer_binder(const struct cred *from, 564 const struct cred *to) 565 { 566 return 0; 567 } 568 569 static inline int security_binder_transfer_file(const struct cred *from, 570 const struct cred *to, 571 const struct file *file) 572 { 573 return 0; 574 } 575 576 static inline int security_ptrace_access_check(struct task_struct *child, 577 unsigned int mode) 578 { 579 return cap_ptrace_access_check(child, mode); 580 } 581 582 static inline int security_ptrace_traceme(struct task_struct *parent) 583 { 584 return cap_ptrace_traceme(parent); 585 } 586 587 static inline int security_capget(const struct task_struct *target, 588 kernel_cap_t *effective, 589 kernel_cap_t *inheritable, 590 kernel_cap_t *permitted) 591 { 592 return cap_capget(target, effective, inheritable, permitted); 593 } 594 595 static inline int security_capset(struct cred *new, 596 const struct cred *old, 597 const kernel_cap_t *effective, 598 const kernel_cap_t *inheritable, 599 const kernel_cap_t *permitted) 600 { 601 return cap_capset(new, old, effective, inheritable, permitted); 602 } 603 604 static inline int security_capable(const struct cred *cred, 605 struct user_namespace *ns, 606 int cap, 607 unsigned int opts) 608 { 609 return cap_capable(cred, ns, cap, opts); 610 } 611 612 static inline int security_quotactl(int cmds, int type, int id, 613 const struct super_block *sb) 614 { 615 return 0; 616 } 617 618 static inline int security_quota_on(struct dentry *dentry) 619 { 620 return 0; 621 } 622 623 static inline int security_syslog(int type) 624 { 625 return 0; 626 } 627 628 static inline int security_settime64(const struct timespec64 *ts, 629 const struct timezone *tz) 630 { 631 return cap_settime(ts, tz); 632 } 633 634 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 635 { 636 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 637 } 638 639 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 640 { 641 return 0; 642 } 643 644 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 645 const struct file *file) 646 { 647 return cap_bprm_creds_from_file(bprm, file); 648 } 649 650 static inline int security_bprm_check(struct linux_binprm *bprm) 651 { 652 return 0; 653 } 654 655 static inline void security_bprm_committing_creds(const struct linux_binprm *bprm) 656 { 657 } 658 659 static inline void security_bprm_committed_creds(const struct linux_binprm *bprm) 660 { 661 } 662 663 static inline int security_fs_context_submount(struct fs_context *fc, 664 struct super_block *reference) 665 { 666 return 0; 667 } 668 static inline int security_fs_context_dup(struct fs_context *fc, 669 struct fs_context *src_fc) 670 { 671 return 0; 672 } 673 static inline int security_fs_context_parse_param(struct fs_context *fc, 674 struct fs_parameter *param) 675 { 676 return -ENOPARAM; 677 } 678 679 static inline int security_sb_alloc(struct super_block *sb) 680 { 681 return 0; 682 } 683 684 static inline void security_sb_delete(struct super_block *sb) 685 { } 686 687 static inline void security_sb_free(struct super_block *sb) 688 { } 689 690 static inline int security_sb_eat_lsm_opts(char *options, 691 void **mnt_opts) 692 { 693 return 0; 694 } 695 696 static inline int security_sb_remount(struct super_block *sb, 697 void *mnt_opts) 698 { 699 return 0; 700 } 701 702 static inline int security_sb_mnt_opts_compat(struct super_block *sb, 703 void *mnt_opts) 704 { 705 return 0; 706 } 707 708 709 static inline int security_sb_kern_mount(struct super_block *sb) 710 { 711 return 0; 712 } 713 714 static inline int security_sb_show_options(struct seq_file *m, 715 struct super_block *sb) 716 { 717 return 0; 718 } 719 720 static inline int security_sb_statfs(struct dentry *dentry) 721 { 722 return 0; 723 } 724 725 static inline int security_sb_mount(const char *dev_name, const struct path *path, 726 const char *type, unsigned long flags, 727 void *data) 728 { 729 return 0; 730 } 731 732 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 733 { 734 return 0; 735 } 736 737 static inline int security_sb_pivotroot(const struct path *old_path, 738 const struct path *new_path) 739 { 740 return 0; 741 } 742 743 static inline int security_sb_set_mnt_opts(struct super_block *sb, 744 void *mnt_opts, 745 unsigned long kern_flags, 746 unsigned long *set_kern_flags) 747 { 748 return 0; 749 } 750 751 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 752 struct super_block *newsb, 753 unsigned long kern_flags, 754 unsigned long *set_kern_flags) 755 { 756 return 0; 757 } 758 759 static inline int security_move_mount(const struct path *from_path, 760 const struct path *to_path) 761 { 762 return 0; 763 } 764 765 static inline int security_path_notify(const struct path *path, u64 mask, 766 unsigned int obj_type) 767 { 768 return 0; 769 } 770 771 static inline int security_inode_alloc(struct inode *inode) 772 { 773 return 0; 774 } 775 776 static inline void security_inode_free(struct inode *inode) 777 { } 778 779 static inline int security_dentry_init_security(struct dentry *dentry, 780 int mode, 781 const struct qstr *name, 782 const char **xattr_name, 783 void **ctx, 784 u32 *ctxlen) 785 { 786 return -EOPNOTSUPP; 787 } 788 789 static inline int security_dentry_create_files_as(struct dentry *dentry, 790 int mode, struct qstr *name, 791 const struct cred *old, 792 struct cred *new) 793 { 794 return 0; 795 } 796 797 798 static inline int security_inode_init_security(struct inode *inode, 799 struct inode *dir, 800 const struct qstr *qstr, 801 const initxattrs xattrs, 802 void *fs_data) 803 { 804 return 0; 805 } 806 807 static inline int security_inode_init_security_anon(struct inode *inode, 808 const struct qstr *name, 809 const struct inode *context_inode) 810 { 811 return 0; 812 } 813 814 static inline int security_inode_create(struct inode *dir, 815 struct dentry *dentry, 816 umode_t mode) 817 { 818 return 0; 819 } 820 821 static inline void 822 security_inode_post_create_tmpfile(struct mnt_idmap *idmap, struct inode *inode) 823 { } 824 825 static inline int security_inode_link(struct dentry *old_dentry, 826 struct inode *dir, 827 struct dentry *new_dentry) 828 { 829 return 0; 830 } 831 832 static inline int security_inode_unlink(struct inode *dir, 833 struct dentry *dentry) 834 { 835 return 0; 836 } 837 838 static inline int security_inode_symlink(struct inode *dir, 839 struct dentry *dentry, 840 const char *old_name) 841 { 842 return 0; 843 } 844 845 static inline int security_inode_mkdir(struct inode *dir, 846 struct dentry *dentry, 847 int mode) 848 { 849 return 0; 850 } 851 852 static inline int security_inode_rmdir(struct inode *dir, 853 struct dentry *dentry) 854 { 855 return 0; 856 } 857 858 static inline int security_inode_mknod(struct inode *dir, 859 struct dentry *dentry, 860 int mode, dev_t dev) 861 { 862 return 0; 863 } 864 865 static inline int security_inode_rename(struct inode *old_dir, 866 struct dentry *old_dentry, 867 struct inode *new_dir, 868 struct dentry *new_dentry, 869 unsigned int flags) 870 { 871 return 0; 872 } 873 874 static inline int security_inode_readlink(struct dentry *dentry) 875 { 876 return 0; 877 } 878 879 static inline int security_inode_follow_link(struct dentry *dentry, 880 struct inode *inode, 881 bool rcu) 882 { 883 return 0; 884 } 885 886 static inline int security_inode_permission(struct inode *inode, int mask) 887 { 888 return 0; 889 } 890 891 static inline int security_inode_setattr(struct mnt_idmap *idmap, 892 struct dentry *dentry, 893 struct iattr *attr) 894 { 895 return 0; 896 } 897 898 static inline void 899 security_inode_post_setattr(struct mnt_idmap *idmap, struct dentry *dentry, 900 int ia_valid) 901 { } 902 903 static inline int security_inode_getattr(const struct path *path) 904 { 905 return 0; 906 } 907 908 static inline int security_inode_setxattr(struct mnt_idmap *idmap, 909 struct dentry *dentry, const char *name, const void *value, 910 size_t size, int flags) 911 { 912 return cap_inode_setxattr(dentry, name, value, size, flags); 913 } 914 915 static inline int security_inode_set_acl(struct mnt_idmap *idmap, 916 struct dentry *dentry, 917 const char *acl_name, 918 struct posix_acl *kacl) 919 { 920 return 0; 921 } 922 923 static inline void security_inode_post_set_acl(struct dentry *dentry, 924 const char *acl_name, 925 struct posix_acl *kacl) 926 { } 927 928 static inline int security_inode_get_acl(struct mnt_idmap *idmap, 929 struct dentry *dentry, 930 const char *acl_name) 931 { 932 return 0; 933 } 934 935 static inline int security_inode_remove_acl(struct mnt_idmap *idmap, 936 struct dentry *dentry, 937 const char *acl_name) 938 { 939 return 0; 940 } 941 942 static inline void security_inode_post_remove_acl(struct mnt_idmap *idmap, 943 struct dentry *dentry, 944 const char *acl_name) 945 { } 946 947 static inline void security_inode_post_setxattr(struct dentry *dentry, 948 const char *name, const void *value, size_t size, int flags) 949 { } 950 951 static inline int security_inode_getxattr(struct dentry *dentry, 952 const char *name) 953 { 954 return 0; 955 } 956 957 static inline int security_inode_listxattr(struct dentry *dentry) 958 { 959 return 0; 960 } 961 962 static inline int security_inode_removexattr(struct mnt_idmap *idmap, 963 struct dentry *dentry, 964 const char *name) 965 { 966 return cap_inode_removexattr(idmap, dentry, name); 967 } 968 969 static inline void security_inode_post_removexattr(struct dentry *dentry, 970 const char *name) 971 { } 972 973 static inline int security_inode_need_killpriv(struct dentry *dentry) 974 { 975 return cap_inode_need_killpriv(dentry); 976 } 977 978 static inline int security_inode_killpriv(struct mnt_idmap *idmap, 979 struct dentry *dentry) 980 { 981 return cap_inode_killpriv(idmap, dentry); 982 } 983 984 static inline int security_inode_getsecurity(struct mnt_idmap *idmap, 985 struct inode *inode, 986 const char *name, void **buffer, 987 bool alloc) 988 { 989 return cap_inode_getsecurity(idmap, inode, name, buffer, alloc); 990 } 991 992 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 993 { 994 return -EOPNOTSUPP; 995 } 996 997 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 998 { 999 return 0; 1000 } 1001 1002 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 1003 { 1004 *secid = 0; 1005 } 1006 1007 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 1008 { 1009 return 0; 1010 } 1011 1012 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 1013 struct kernfs_node *kn) 1014 { 1015 return 0; 1016 } 1017 1018 static inline int security_inode_copy_up_xattr(const char *name) 1019 { 1020 return -EOPNOTSUPP; 1021 } 1022 1023 static inline int security_file_permission(struct file *file, int mask) 1024 { 1025 return 0; 1026 } 1027 1028 static inline int security_file_alloc(struct file *file) 1029 { 1030 return 0; 1031 } 1032 1033 static inline void security_file_release(struct file *file) 1034 { } 1035 1036 static inline void security_file_free(struct file *file) 1037 { } 1038 1039 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 1040 unsigned long arg) 1041 { 1042 return 0; 1043 } 1044 1045 static inline int security_file_ioctl_compat(struct file *file, 1046 unsigned int cmd, 1047 unsigned long arg) 1048 { 1049 return 0; 1050 } 1051 1052 static inline int security_mmap_file(struct file *file, unsigned long prot, 1053 unsigned long flags) 1054 { 1055 return 0; 1056 } 1057 1058 static inline int security_mmap_addr(unsigned long addr) 1059 { 1060 return cap_mmap_addr(addr); 1061 } 1062 1063 static inline int security_file_mprotect(struct vm_area_struct *vma, 1064 unsigned long reqprot, 1065 unsigned long prot) 1066 { 1067 return 0; 1068 } 1069 1070 static inline int security_file_lock(struct file *file, unsigned int cmd) 1071 { 1072 return 0; 1073 } 1074 1075 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 1076 unsigned long arg) 1077 { 1078 return 0; 1079 } 1080 1081 static inline void security_file_set_fowner(struct file *file) 1082 { 1083 return; 1084 } 1085 1086 static inline int security_file_send_sigiotask(struct task_struct *tsk, 1087 struct fown_struct *fown, 1088 int sig) 1089 { 1090 return 0; 1091 } 1092 1093 static inline int security_file_receive(struct file *file) 1094 { 1095 return 0; 1096 } 1097 1098 static inline int security_file_open(struct file *file) 1099 { 1100 return 0; 1101 } 1102 1103 static inline int security_file_post_open(struct file *file, int mask) 1104 { 1105 return 0; 1106 } 1107 1108 static inline int security_file_truncate(struct file *file) 1109 { 1110 return 0; 1111 } 1112 1113 static inline int security_task_alloc(struct task_struct *task, 1114 unsigned long clone_flags) 1115 { 1116 return 0; 1117 } 1118 1119 static inline void security_task_free(struct task_struct *task) 1120 { } 1121 1122 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1123 { 1124 return 0; 1125 } 1126 1127 static inline void security_cred_free(struct cred *cred) 1128 { } 1129 1130 static inline int security_prepare_creds(struct cred *new, 1131 const struct cred *old, 1132 gfp_t gfp) 1133 { 1134 return 0; 1135 } 1136 1137 static inline void security_transfer_creds(struct cred *new, 1138 const struct cred *old) 1139 { 1140 } 1141 1142 static inline void security_cred_getsecid(const struct cred *c, u32 *secid) 1143 { 1144 *secid = 0; 1145 } 1146 1147 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1148 { 1149 return 0; 1150 } 1151 1152 static inline int security_kernel_create_files_as(struct cred *cred, 1153 struct inode *inode) 1154 { 1155 return 0; 1156 } 1157 1158 static inline int security_kernel_module_request(char *kmod_name) 1159 { 1160 return 0; 1161 } 1162 1163 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1164 { 1165 return 0; 1166 } 1167 1168 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1169 enum kernel_load_data_id id, 1170 char *description) 1171 { 1172 return 0; 1173 } 1174 1175 static inline int security_kernel_read_file(struct file *file, 1176 enum kernel_read_file_id id, 1177 bool contents) 1178 { 1179 return 0; 1180 } 1181 1182 static inline int security_kernel_post_read_file(struct file *file, 1183 char *buf, loff_t size, 1184 enum kernel_read_file_id id) 1185 { 1186 return 0; 1187 } 1188 1189 static inline int security_task_fix_setuid(struct cred *new, 1190 const struct cred *old, 1191 int flags) 1192 { 1193 return cap_task_fix_setuid(new, old, flags); 1194 } 1195 1196 static inline int security_task_fix_setgid(struct cred *new, 1197 const struct cred *old, 1198 int flags) 1199 { 1200 return 0; 1201 } 1202 1203 static inline int security_task_fix_setgroups(struct cred *new, 1204 const struct cred *old) 1205 { 1206 return 0; 1207 } 1208 1209 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1210 { 1211 return 0; 1212 } 1213 1214 static inline int security_task_getpgid(struct task_struct *p) 1215 { 1216 return 0; 1217 } 1218 1219 static inline int security_task_getsid(struct task_struct *p) 1220 { 1221 return 0; 1222 } 1223 1224 static inline void security_current_getsecid_subj(u32 *secid) 1225 { 1226 *secid = 0; 1227 } 1228 1229 static inline void security_task_getsecid_obj(struct task_struct *p, u32 *secid) 1230 { 1231 *secid = 0; 1232 } 1233 1234 static inline int security_task_setnice(struct task_struct *p, int nice) 1235 { 1236 return cap_task_setnice(p, nice); 1237 } 1238 1239 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1240 { 1241 return cap_task_setioprio(p, ioprio); 1242 } 1243 1244 static inline int security_task_getioprio(struct task_struct *p) 1245 { 1246 return 0; 1247 } 1248 1249 static inline int security_task_prlimit(const struct cred *cred, 1250 const struct cred *tcred, 1251 unsigned int flags) 1252 { 1253 return 0; 1254 } 1255 1256 static inline int security_task_setrlimit(struct task_struct *p, 1257 unsigned int resource, 1258 struct rlimit *new_rlim) 1259 { 1260 return 0; 1261 } 1262 1263 static inline int security_task_setscheduler(struct task_struct *p) 1264 { 1265 return cap_task_setscheduler(p); 1266 } 1267 1268 static inline int security_task_getscheduler(struct task_struct *p) 1269 { 1270 return 0; 1271 } 1272 1273 static inline int security_task_movememory(struct task_struct *p) 1274 { 1275 return 0; 1276 } 1277 1278 static inline int security_task_kill(struct task_struct *p, 1279 struct kernel_siginfo *info, int sig, 1280 const struct cred *cred) 1281 { 1282 return 0; 1283 } 1284 1285 static inline int security_task_prctl(int option, unsigned long arg2, 1286 unsigned long arg3, 1287 unsigned long arg4, 1288 unsigned long arg5) 1289 { 1290 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1291 } 1292 1293 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1294 { } 1295 1296 static inline int security_create_user_ns(const struct cred *cred) 1297 { 1298 return 0; 1299 } 1300 1301 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1302 short flag) 1303 { 1304 return 0; 1305 } 1306 1307 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1308 { 1309 *secid = 0; 1310 } 1311 1312 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1313 { 1314 return 0; 1315 } 1316 1317 static inline void security_msg_msg_free(struct msg_msg *msg) 1318 { } 1319 1320 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1321 { 1322 return 0; 1323 } 1324 1325 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1326 { } 1327 1328 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1329 int msqflg) 1330 { 1331 return 0; 1332 } 1333 1334 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1335 { 1336 return 0; 1337 } 1338 1339 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1340 struct msg_msg *msg, int msqflg) 1341 { 1342 return 0; 1343 } 1344 1345 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1346 struct msg_msg *msg, 1347 struct task_struct *target, 1348 long type, int mode) 1349 { 1350 return 0; 1351 } 1352 1353 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1354 { 1355 return 0; 1356 } 1357 1358 static inline void security_shm_free(struct kern_ipc_perm *shp) 1359 { } 1360 1361 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1362 int shmflg) 1363 { 1364 return 0; 1365 } 1366 1367 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1368 { 1369 return 0; 1370 } 1371 1372 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1373 char __user *shmaddr, int shmflg) 1374 { 1375 return 0; 1376 } 1377 1378 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1379 { 1380 return 0; 1381 } 1382 1383 static inline void security_sem_free(struct kern_ipc_perm *sma) 1384 { } 1385 1386 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1387 { 1388 return 0; 1389 } 1390 1391 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1392 { 1393 return 0; 1394 } 1395 1396 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1397 struct sembuf *sops, unsigned nsops, 1398 int alter) 1399 { 1400 return 0; 1401 } 1402 1403 static inline void security_d_instantiate(struct dentry *dentry, 1404 struct inode *inode) 1405 { } 1406 1407 static inline int security_getselfattr(unsigned int attr, 1408 struct lsm_ctx __user *ctx, 1409 size_t __user *size, u32 flags) 1410 { 1411 return -EOPNOTSUPP; 1412 } 1413 1414 static inline int security_setselfattr(unsigned int attr, 1415 struct lsm_ctx __user *ctx, 1416 size_t size, u32 flags) 1417 { 1418 return -EOPNOTSUPP; 1419 } 1420 1421 static inline int security_getprocattr(struct task_struct *p, int lsmid, 1422 const char *name, char **value) 1423 { 1424 return -EINVAL; 1425 } 1426 1427 static inline int security_setprocattr(int lsmid, char *name, void *value, 1428 size_t size) 1429 { 1430 return -EINVAL; 1431 } 1432 1433 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1434 { 1435 return 0; 1436 } 1437 1438 static inline int security_ismaclabel(const char *name) 1439 { 1440 return 0; 1441 } 1442 1443 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1444 { 1445 return -EOPNOTSUPP; 1446 } 1447 1448 static inline int security_secctx_to_secid(const char *secdata, 1449 u32 seclen, 1450 u32 *secid) 1451 { 1452 return -EOPNOTSUPP; 1453 } 1454 1455 static inline void security_release_secctx(char *secdata, u32 seclen) 1456 { 1457 } 1458 1459 static inline void security_inode_invalidate_secctx(struct inode *inode) 1460 { 1461 } 1462 1463 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1464 { 1465 return -EOPNOTSUPP; 1466 } 1467 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1468 { 1469 return -EOPNOTSUPP; 1470 } 1471 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1472 { 1473 return -EOPNOTSUPP; 1474 } 1475 static inline int security_locked_down(enum lockdown_reason what) 1476 { 1477 return 0; 1478 } 1479 static inline int lsm_fill_user_ctx(struct lsm_ctx __user *uctx, 1480 size_t *uctx_len, void *val, size_t val_len, 1481 u64 id, u64 flags) 1482 { 1483 return -EOPNOTSUPP; 1484 } 1485 #endif /* CONFIG_SECURITY */ 1486 1487 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1488 int security_post_notification(const struct cred *w_cred, 1489 const struct cred *cred, 1490 struct watch_notification *n); 1491 #else 1492 static inline int security_post_notification(const struct cred *w_cred, 1493 const struct cred *cred, 1494 struct watch_notification *n) 1495 { 1496 return 0; 1497 } 1498 #endif 1499 1500 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1501 int security_watch_key(struct key *key); 1502 #else 1503 static inline int security_watch_key(struct key *key) 1504 { 1505 return 0; 1506 } 1507 #endif 1508 1509 #ifdef CONFIG_SECURITY_NETWORK 1510 1511 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1512 int security_unix_may_send(struct socket *sock, struct socket *other); 1513 int security_socket_create(int family, int type, int protocol, int kern); 1514 int security_socket_post_create(struct socket *sock, int family, 1515 int type, int protocol, int kern); 1516 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1517 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1518 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1519 int security_socket_listen(struct socket *sock, int backlog); 1520 int security_socket_accept(struct socket *sock, struct socket *newsock); 1521 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1522 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1523 int size, int flags); 1524 int security_socket_getsockname(struct socket *sock); 1525 int security_socket_getpeername(struct socket *sock); 1526 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1527 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1528 int security_socket_shutdown(struct socket *sock, int how); 1529 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1530 int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval, 1531 sockptr_t optlen, unsigned int len); 1532 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1533 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1534 void security_sk_free(struct sock *sk); 1535 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1536 void security_sk_classify_flow(const struct sock *sk, 1537 struct flowi_common *flic); 1538 void security_req_classify_flow(const struct request_sock *req, 1539 struct flowi_common *flic); 1540 void security_sock_graft(struct sock*sk, struct socket *parent); 1541 int security_inet_conn_request(const struct sock *sk, 1542 struct sk_buff *skb, struct request_sock *req); 1543 void security_inet_csk_clone(struct sock *newsk, 1544 const struct request_sock *req); 1545 void security_inet_conn_established(struct sock *sk, 1546 struct sk_buff *skb); 1547 int security_secmark_relabel_packet(u32 secid); 1548 void security_secmark_refcount_inc(void); 1549 void security_secmark_refcount_dec(void); 1550 int security_tun_dev_alloc_security(void **security); 1551 void security_tun_dev_free_security(void *security); 1552 int security_tun_dev_create(void); 1553 int security_tun_dev_attach_queue(void *security); 1554 int security_tun_dev_attach(struct sock *sk, void *security); 1555 int security_tun_dev_open(void *security); 1556 int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb); 1557 int security_sctp_bind_connect(struct sock *sk, int optname, 1558 struct sockaddr *address, int addrlen); 1559 void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, 1560 struct sock *newsk); 1561 int security_sctp_assoc_established(struct sctp_association *asoc, 1562 struct sk_buff *skb); 1563 int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk); 1564 1565 #else /* CONFIG_SECURITY_NETWORK */ 1566 static inline int security_unix_stream_connect(struct sock *sock, 1567 struct sock *other, 1568 struct sock *newsk) 1569 { 1570 return 0; 1571 } 1572 1573 static inline int security_unix_may_send(struct socket *sock, 1574 struct socket *other) 1575 { 1576 return 0; 1577 } 1578 1579 static inline int security_socket_create(int family, int type, 1580 int protocol, int kern) 1581 { 1582 return 0; 1583 } 1584 1585 static inline int security_socket_post_create(struct socket *sock, 1586 int family, 1587 int type, 1588 int protocol, int kern) 1589 { 1590 return 0; 1591 } 1592 1593 static inline int security_socket_socketpair(struct socket *socka, 1594 struct socket *sockb) 1595 { 1596 return 0; 1597 } 1598 1599 static inline int security_socket_bind(struct socket *sock, 1600 struct sockaddr *address, 1601 int addrlen) 1602 { 1603 return 0; 1604 } 1605 1606 static inline int security_socket_connect(struct socket *sock, 1607 struct sockaddr *address, 1608 int addrlen) 1609 { 1610 return 0; 1611 } 1612 1613 static inline int security_socket_listen(struct socket *sock, int backlog) 1614 { 1615 return 0; 1616 } 1617 1618 static inline int security_socket_accept(struct socket *sock, 1619 struct socket *newsock) 1620 { 1621 return 0; 1622 } 1623 1624 static inline int security_socket_sendmsg(struct socket *sock, 1625 struct msghdr *msg, int size) 1626 { 1627 return 0; 1628 } 1629 1630 static inline int security_socket_recvmsg(struct socket *sock, 1631 struct msghdr *msg, int size, 1632 int flags) 1633 { 1634 return 0; 1635 } 1636 1637 static inline int security_socket_getsockname(struct socket *sock) 1638 { 1639 return 0; 1640 } 1641 1642 static inline int security_socket_getpeername(struct socket *sock) 1643 { 1644 return 0; 1645 } 1646 1647 static inline int security_socket_getsockopt(struct socket *sock, 1648 int level, int optname) 1649 { 1650 return 0; 1651 } 1652 1653 static inline int security_socket_setsockopt(struct socket *sock, 1654 int level, int optname) 1655 { 1656 return 0; 1657 } 1658 1659 static inline int security_socket_shutdown(struct socket *sock, int how) 1660 { 1661 return 0; 1662 } 1663 static inline int security_sock_rcv_skb(struct sock *sk, 1664 struct sk_buff *skb) 1665 { 1666 return 0; 1667 } 1668 1669 static inline int security_socket_getpeersec_stream(struct socket *sock, 1670 sockptr_t optval, 1671 sockptr_t optlen, 1672 unsigned int len) 1673 { 1674 return -ENOPROTOOPT; 1675 } 1676 1677 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1678 { 1679 return -ENOPROTOOPT; 1680 } 1681 1682 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1683 { 1684 return 0; 1685 } 1686 1687 static inline void security_sk_free(struct sock *sk) 1688 { 1689 } 1690 1691 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1692 { 1693 } 1694 1695 static inline void security_sk_classify_flow(const struct sock *sk, 1696 struct flowi_common *flic) 1697 { 1698 } 1699 1700 static inline void security_req_classify_flow(const struct request_sock *req, 1701 struct flowi_common *flic) 1702 { 1703 } 1704 1705 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1706 { 1707 } 1708 1709 static inline int security_inet_conn_request(const struct sock *sk, 1710 struct sk_buff *skb, struct request_sock *req) 1711 { 1712 return 0; 1713 } 1714 1715 static inline void security_inet_csk_clone(struct sock *newsk, 1716 const struct request_sock *req) 1717 { 1718 } 1719 1720 static inline void security_inet_conn_established(struct sock *sk, 1721 struct sk_buff *skb) 1722 { 1723 } 1724 1725 static inline int security_secmark_relabel_packet(u32 secid) 1726 { 1727 return 0; 1728 } 1729 1730 static inline void security_secmark_refcount_inc(void) 1731 { 1732 } 1733 1734 static inline void security_secmark_refcount_dec(void) 1735 { 1736 } 1737 1738 static inline int security_tun_dev_alloc_security(void **security) 1739 { 1740 return 0; 1741 } 1742 1743 static inline void security_tun_dev_free_security(void *security) 1744 { 1745 } 1746 1747 static inline int security_tun_dev_create(void) 1748 { 1749 return 0; 1750 } 1751 1752 static inline int security_tun_dev_attach_queue(void *security) 1753 { 1754 return 0; 1755 } 1756 1757 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1758 { 1759 return 0; 1760 } 1761 1762 static inline int security_tun_dev_open(void *security) 1763 { 1764 return 0; 1765 } 1766 1767 static inline int security_sctp_assoc_request(struct sctp_association *asoc, 1768 struct sk_buff *skb) 1769 { 1770 return 0; 1771 } 1772 1773 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1774 struct sockaddr *address, 1775 int addrlen) 1776 { 1777 return 0; 1778 } 1779 1780 static inline void security_sctp_sk_clone(struct sctp_association *asoc, 1781 struct sock *sk, 1782 struct sock *newsk) 1783 { 1784 } 1785 1786 static inline int security_sctp_assoc_established(struct sctp_association *asoc, 1787 struct sk_buff *skb) 1788 { 1789 return 0; 1790 } 1791 1792 static inline int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk) 1793 { 1794 return 0; 1795 } 1796 #endif /* CONFIG_SECURITY_NETWORK */ 1797 1798 #ifdef CONFIG_SECURITY_INFINIBAND 1799 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1800 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1801 int security_ib_alloc_security(void **sec); 1802 void security_ib_free_security(void *sec); 1803 #else /* CONFIG_SECURITY_INFINIBAND */ 1804 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1805 { 1806 return 0; 1807 } 1808 1809 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1810 { 1811 return 0; 1812 } 1813 1814 static inline int security_ib_alloc_security(void **sec) 1815 { 1816 return 0; 1817 } 1818 1819 static inline void security_ib_free_security(void *sec) 1820 { 1821 } 1822 #endif /* CONFIG_SECURITY_INFINIBAND */ 1823 1824 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1825 1826 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1827 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1828 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1829 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1830 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1831 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1832 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1833 struct xfrm_sec_ctx *polsec, u32 secid); 1834 int security_xfrm_state_delete(struct xfrm_state *x); 1835 void security_xfrm_state_free(struct xfrm_state *x); 1836 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); 1837 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1838 struct xfrm_policy *xp, 1839 const struct flowi_common *flic); 1840 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1841 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1842 1843 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1844 1845 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1846 struct xfrm_user_sec_ctx *sec_ctx, 1847 gfp_t gfp) 1848 { 1849 return 0; 1850 } 1851 1852 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1853 { 1854 return 0; 1855 } 1856 1857 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1858 { 1859 } 1860 1861 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1862 { 1863 return 0; 1864 } 1865 1866 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1867 struct xfrm_user_sec_ctx *sec_ctx) 1868 { 1869 return 0; 1870 } 1871 1872 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1873 struct xfrm_sec_ctx *polsec, u32 secid) 1874 { 1875 return 0; 1876 } 1877 1878 static inline void security_xfrm_state_free(struct xfrm_state *x) 1879 { 1880 } 1881 1882 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1883 { 1884 return 0; 1885 } 1886 1887 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) 1888 { 1889 return 0; 1890 } 1891 1892 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1893 struct xfrm_policy *xp, 1894 const struct flowi_common *flic) 1895 { 1896 return 1; 1897 } 1898 1899 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1900 { 1901 return 0; 1902 } 1903 1904 static inline void security_skb_classify_flow(struct sk_buff *skb, 1905 struct flowi_common *flic) 1906 { 1907 } 1908 1909 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1910 1911 #ifdef CONFIG_SECURITY_PATH 1912 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1913 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1914 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1915 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1916 unsigned int dev); 1917 void security_path_post_mknod(struct mnt_idmap *idmap, struct dentry *dentry); 1918 int security_path_truncate(const struct path *path); 1919 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1920 const char *old_name); 1921 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1922 struct dentry *new_dentry); 1923 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1924 const struct path *new_dir, struct dentry *new_dentry, 1925 unsigned int flags); 1926 int security_path_chmod(const struct path *path, umode_t mode); 1927 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1928 int security_path_chroot(const struct path *path); 1929 #else /* CONFIG_SECURITY_PATH */ 1930 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1931 { 1932 return 0; 1933 } 1934 1935 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1936 umode_t mode) 1937 { 1938 return 0; 1939 } 1940 1941 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1942 { 1943 return 0; 1944 } 1945 1946 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1947 umode_t mode, unsigned int dev) 1948 { 1949 return 0; 1950 } 1951 1952 static inline void security_path_post_mknod(struct mnt_idmap *idmap, 1953 struct dentry *dentry) 1954 { } 1955 1956 static inline int security_path_truncate(const struct path *path) 1957 { 1958 return 0; 1959 } 1960 1961 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1962 const char *old_name) 1963 { 1964 return 0; 1965 } 1966 1967 static inline int security_path_link(struct dentry *old_dentry, 1968 const struct path *new_dir, 1969 struct dentry *new_dentry) 1970 { 1971 return 0; 1972 } 1973 1974 static inline int security_path_rename(const struct path *old_dir, 1975 struct dentry *old_dentry, 1976 const struct path *new_dir, 1977 struct dentry *new_dentry, 1978 unsigned int flags) 1979 { 1980 return 0; 1981 } 1982 1983 static inline int security_path_chmod(const struct path *path, umode_t mode) 1984 { 1985 return 0; 1986 } 1987 1988 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1989 { 1990 return 0; 1991 } 1992 1993 static inline int security_path_chroot(const struct path *path) 1994 { 1995 return 0; 1996 } 1997 #endif /* CONFIG_SECURITY_PATH */ 1998 1999 #ifdef CONFIG_KEYS 2000 #ifdef CONFIG_SECURITY 2001 2002 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 2003 void security_key_free(struct key *key); 2004 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 2005 enum key_need_perm need_perm); 2006 int security_key_getsecurity(struct key *key, char **_buffer); 2007 void security_key_post_create_or_update(struct key *keyring, struct key *key, 2008 const void *payload, size_t payload_len, 2009 unsigned long flags, bool create); 2010 2011 #else 2012 2013 static inline int security_key_alloc(struct key *key, 2014 const struct cred *cred, 2015 unsigned long flags) 2016 { 2017 return 0; 2018 } 2019 2020 static inline void security_key_free(struct key *key) 2021 { 2022 } 2023 2024 static inline int security_key_permission(key_ref_t key_ref, 2025 const struct cred *cred, 2026 enum key_need_perm need_perm) 2027 { 2028 return 0; 2029 } 2030 2031 static inline int security_key_getsecurity(struct key *key, char **_buffer) 2032 { 2033 *_buffer = NULL; 2034 return 0; 2035 } 2036 2037 static inline void security_key_post_create_or_update(struct key *keyring, 2038 struct key *key, 2039 const void *payload, 2040 size_t payload_len, 2041 unsigned long flags, 2042 bool create) 2043 { } 2044 2045 #endif 2046 #endif /* CONFIG_KEYS */ 2047 2048 #ifdef CONFIG_AUDIT 2049 #ifdef CONFIG_SECURITY 2050 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 2051 int security_audit_rule_known(struct audit_krule *krule); 2052 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 2053 void security_audit_rule_free(void *lsmrule); 2054 2055 #else 2056 2057 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 2058 void **lsmrule) 2059 { 2060 return 0; 2061 } 2062 2063 static inline int security_audit_rule_known(struct audit_krule *krule) 2064 { 2065 return 0; 2066 } 2067 2068 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 2069 void *lsmrule) 2070 { 2071 return 0; 2072 } 2073 2074 static inline void security_audit_rule_free(void *lsmrule) 2075 { } 2076 2077 #endif /* CONFIG_SECURITY */ 2078 #endif /* CONFIG_AUDIT */ 2079 2080 #ifdef CONFIG_SECURITYFS 2081 2082 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 2083 struct dentry *parent, void *data, 2084 const struct file_operations *fops); 2085 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 2086 struct dentry *securityfs_create_symlink(const char *name, 2087 struct dentry *parent, 2088 const char *target, 2089 const struct inode_operations *iops); 2090 extern void securityfs_remove(struct dentry *dentry); 2091 2092 #else /* CONFIG_SECURITYFS */ 2093 2094 static inline struct dentry *securityfs_create_dir(const char *name, 2095 struct dentry *parent) 2096 { 2097 return ERR_PTR(-ENODEV); 2098 } 2099 2100 static inline struct dentry *securityfs_create_file(const char *name, 2101 umode_t mode, 2102 struct dentry *parent, 2103 void *data, 2104 const struct file_operations *fops) 2105 { 2106 return ERR_PTR(-ENODEV); 2107 } 2108 2109 static inline struct dentry *securityfs_create_symlink(const char *name, 2110 struct dentry *parent, 2111 const char *target, 2112 const struct inode_operations *iops) 2113 { 2114 return ERR_PTR(-ENODEV); 2115 } 2116 2117 static inline void securityfs_remove(struct dentry *dentry) 2118 {} 2119 2120 #endif 2121 2122 #ifdef CONFIG_BPF_SYSCALL 2123 union bpf_attr; 2124 struct bpf_map; 2125 struct bpf_prog; 2126 struct bpf_prog_aux; 2127 #ifdef CONFIG_SECURITY 2128 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 2129 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 2130 extern int security_bpf_prog(struct bpf_prog *prog); 2131 extern int security_bpf_map_alloc(struct bpf_map *map); 2132 extern void security_bpf_map_free(struct bpf_map *map); 2133 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 2134 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 2135 #else 2136 static inline int security_bpf(int cmd, union bpf_attr *attr, 2137 unsigned int size) 2138 { 2139 return 0; 2140 } 2141 2142 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 2143 { 2144 return 0; 2145 } 2146 2147 static inline int security_bpf_prog(struct bpf_prog *prog) 2148 { 2149 return 0; 2150 } 2151 2152 static inline int security_bpf_map_alloc(struct bpf_map *map) 2153 { 2154 return 0; 2155 } 2156 2157 static inline void security_bpf_map_free(struct bpf_map *map) 2158 { } 2159 2160 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 2161 { 2162 return 0; 2163 } 2164 2165 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 2166 { } 2167 #endif /* CONFIG_SECURITY */ 2168 #endif /* CONFIG_BPF_SYSCALL */ 2169 2170 #ifdef CONFIG_PERF_EVENTS 2171 struct perf_event_attr; 2172 struct perf_event; 2173 2174 #ifdef CONFIG_SECURITY 2175 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 2176 extern int security_perf_event_alloc(struct perf_event *event); 2177 extern void security_perf_event_free(struct perf_event *event); 2178 extern int security_perf_event_read(struct perf_event *event); 2179 extern int security_perf_event_write(struct perf_event *event); 2180 #else 2181 static inline int security_perf_event_open(struct perf_event_attr *attr, 2182 int type) 2183 { 2184 return 0; 2185 } 2186 2187 static inline int security_perf_event_alloc(struct perf_event *event) 2188 { 2189 return 0; 2190 } 2191 2192 static inline void security_perf_event_free(struct perf_event *event) 2193 { 2194 } 2195 2196 static inline int security_perf_event_read(struct perf_event *event) 2197 { 2198 return 0; 2199 } 2200 2201 static inline int security_perf_event_write(struct perf_event *event) 2202 { 2203 return 0; 2204 } 2205 #endif /* CONFIG_SECURITY */ 2206 #endif /* CONFIG_PERF_EVENTS */ 2207 2208 #ifdef CONFIG_IO_URING 2209 #ifdef CONFIG_SECURITY 2210 extern int security_uring_override_creds(const struct cred *new); 2211 extern int security_uring_sqpoll(void); 2212 extern int security_uring_cmd(struct io_uring_cmd *ioucmd); 2213 #else 2214 static inline int security_uring_override_creds(const struct cred *new) 2215 { 2216 return 0; 2217 } 2218 static inline int security_uring_sqpoll(void) 2219 { 2220 return 0; 2221 } 2222 static inline int security_uring_cmd(struct io_uring_cmd *ioucmd) 2223 { 2224 return 0; 2225 } 2226 #endif /* CONFIG_SECURITY */ 2227 #endif /* CONFIG_IO_URING */ 2228 2229 #endif /* ! __LINUX_SECURITY_H */ 2230