1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> 5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> 7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au> 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 <linux/bpf.h> 36 #include <uapi/linux/lsm.h> 37 #include <linux/lsm/selinux.h> 38 #include <linux/lsm/smack.h> 39 #include <linux/lsm/apparmor.h> 40 #include <linux/lsm/bpf.h> 41 42 struct linux_binprm; 43 struct cred; 44 struct rlimit; 45 struct kernel_siginfo; 46 struct sembuf; 47 struct kern_ipc_perm; 48 struct audit_context; 49 struct super_block; 50 struct inode; 51 struct dentry; 52 struct file; 53 struct vfsmount; 54 struct path; 55 struct qstr; 56 struct iattr; 57 struct fown_struct; 58 struct file_operations; 59 struct msg_msg; 60 struct xattr; 61 struct kernfs_node; 62 struct xfrm_sec_ctx; 63 struct mm_struct; 64 struct fs_context; 65 struct fs_parameter; 66 enum fs_value_type; 67 struct watch; 68 struct watch_notification; 69 struct lsm_ctx; 70 struct nsset; 71 72 /* Default (no) options for the capable function */ 73 #define CAP_OPT_NONE 0x0 74 /* If capable should audit the security request */ 75 #define CAP_OPT_NOAUDIT BIT(1) 76 /* If capable is being called by a setid function */ 77 #define CAP_OPT_INSETID BIT(2) 78 79 /* LSM Agnostic defines for security_sb_set_mnt_opts() flags */ 80 #define SECURITY_LSM_NATIVE_LABELS 1 81 82 struct ctl_table; 83 struct audit_krule; 84 struct ns_common; 85 struct user_namespace; 86 struct timezone; 87 88 enum lsm_event { 89 LSM_POLICY_CHANGE, 90 LSM_STARTED_ALL, 91 }; 92 93 struct dm_verity_digest { 94 const char *alg; 95 const u8 *digest; 96 size_t digest_len; 97 }; 98 99 enum lsm_integrity_type { 100 LSM_INT_DMVERITY_SIG_VALID, 101 LSM_INT_DMVERITY_ROOTHASH, 102 LSM_INT_FSVERITY_BUILTINSIG_VALID, 103 }; 104 105 /* 106 * These are reasons that can be passed to the security_locked_down() 107 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 108 * ability for userland to modify kernel code) are placed before 109 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 110 * confidentiality (ie, the ability for userland to extract 111 * information from the running kernel that would otherwise be 112 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 113 * 114 * LSM authors should note that the semantics of any given lockdown 115 * reason are not guaranteed to be stable - the same reason may block 116 * one set of features in one kernel release, and a slightly different 117 * set of features in a later kernel release. LSMs that seek to expose 118 * lockdown policy at any level of granularity other than "none", 119 * "integrity" or "confidentiality" are responsible for either 120 * ensuring that they expose a consistent level of functionality to 121 * userland, or ensuring that userland is aware that this is 122 * potentially a moving target. It is easy to misuse this information 123 * in a way that could break userspace. Please be careful not to do 124 * so. 125 * 126 * If you add to this, remember to extend lockdown_reasons in 127 * security/lockdown/lockdown.c. 128 */ 129 enum lockdown_reason { 130 LOCKDOWN_NONE, 131 LOCKDOWN_MODULE_SIGNATURE, 132 LOCKDOWN_DEV_MEM, 133 LOCKDOWN_EFI_TEST, 134 LOCKDOWN_KEXEC, 135 LOCKDOWN_HIBERNATION, 136 LOCKDOWN_PCI_ACCESS, 137 LOCKDOWN_IOPORT, 138 LOCKDOWN_MSR, 139 LOCKDOWN_ACPI_TABLES, 140 LOCKDOWN_DEVICE_TREE, 141 LOCKDOWN_PCMCIA_CIS, 142 LOCKDOWN_TIOCSSERIAL, 143 LOCKDOWN_MODULE_PARAMETERS, 144 LOCKDOWN_MMIOTRACE, 145 LOCKDOWN_DEBUGFS, 146 LOCKDOWN_XMON_WR, 147 LOCKDOWN_BPF_WRITE_USER, 148 LOCKDOWN_DBG_WRITE_KERNEL, 149 LOCKDOWN_RTAS_ERROR_INJECTION, 150 LOCKDOWN_XEN_USER_ACTIONS, 151 LOCKDOWN_INTEGRITY_MAX, 152 LOCKDOWN_KCORE, 153 LOCKDOWN_KPROBES, 154 LOCKDOWN_BPF_READ_KERNEL, 155 LOCKDOWN_DBG_READ_KERNEL, 156 LOCKDOWN_PERF, 157 LOCKDOWN_TRACEFS, 158 LOCKDOWN_XMON_RW, 159 LOCKDOWN_XFRM_SECRET, 160 LOCKDOWN_CONFIDENTIALITY_MAX, 161 }; 162 163 /* 164 * Data exported by the security modules 165 */ 166 struct lsm_prop { 167 struct lsm_prop_selinux selinux; 168 struct lsm_prop_smack smack; 169 struct lsm_prop_apparmor apparmor; 170 struct lsm_prop_bpf bpf; 171 }; 172 173 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 174 175 /* These functions are in security/commoncap.c */ 176 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 177 int cap, unsigned int opts); 178 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 179 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 180 extern int cap_ptrace_traceme(struct task_struct *parent); 181 extern int cap_capget(const struct task_struct *target, kernel_cap_t *effective, 182 kernel_cap_t *inheritable, kernel_cap_t *permitted); 183 extern int cap_capset(struct cred *new, const struct cred *old, 184 const kernel_cap_t *effective, 185 const kernel_cap_t *inheritable, 186 const kernel_cap_t *permitted); 187 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file); 188 int cap_inode_setxattr(struct dentry *dentry, const char *name, 189 const void *value, size_t size, int flags); 190 int cap_inode_removexattr(const struct mnt_idmap *idmap, 191 struct dentry *dentry, const char *name); 192 int cap_inode_need_killpriv(struct dentry *dentry); 193 int cap_inode_killpriv(const struct mnt_idmap *idmap, struct dentry *dentry); 194 int cap_inode_getsecurity(const struct mnt_idmap *idmap, 195 struct inode *inode, const char *name, void **buffer, 196 bool alloc); 197 extern int cap_mmap_addr(unsigned long addr); 198 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 199 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 200 unsigned long arg4, unsigned long arg5); 201 extern int cap_task_setscheduler(struct task_struct *p); 202 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 203 extern int cap_task_setnice(struct task_struct *p, int nice); 204 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 205 206 struct msghdr; 207 struct sk_buff; 208 struct sock; 209 struct sockaddr; 210 struct socket; 211 struct flowi_common; 212 struct dst_entry; 213 struct xfrm_selector; 214 struct xfrm_policy; 215 struct xfrm_state; 216 struct xfrm_user_sec_ctx; 217 struct seq_file; 218 struct sctp_association; 219 220 #ifdef CONFIG_MMU 221 extern unsigned long mmap_min_addr; 222 extern unsigned long dac_mmap_min_addr; 223 #else 224 #define mmap_min_addr 0UL 225 #define dac_mmap_min_addr 0UL 226 #endif 227 228 /* 229 * A "security context" is the text representation of 230 * the information used by LSMs. 231 * This structure contains the string, its length, and which LSM 232 * it is useful for. 233 */ 234 struct lsm_context { 235 char *context; /* Provided by the module */ 236 u32 len; 237 int id; /* Identifies the module */ 238 }; 239 240 /* 241 * Values used in the task_security_ops calls 242 */ 243 /* setuid or setgid, id0 == uid or gid */ 244 #define LSM_SETID_ID 1 245 246 /* setreuid or setregid, id0 == real, id1 == eff */ 247 #define LSM_SETID_RE 2 248 249 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 250 #define LSM_SETID_RES 4 251 252 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 253 #define LSM_SETID_FS 8 254 255 /* Flags for security_task_prlimit(). */ 256 #define LSM_PRLIMIT_READ 1 257 #define LSM_PRLIMIT_WRITE 2 258 259 /* forward declares to avoid warnings */ 260 struct sched_param; 261 struct request_sock; 262 263 /* bprm->unsafe reasons */ 264 #define LSM_UNSAFE_SHARE 1 265 #define LSM_UNSAFE_PTRACE 2 266 #define LSM_UNSAFE_NO_NEW_PRIVS 4 267 268 #ifdef CONFIG_MMU 269 extern int mmap_min_addr_handler(const struct ctl_table *table, int write, 270 void *buffer, size_t *lenp, loff_t *ppos); 271 #endif 272 273 /* security_inode_init_security callback function to write xattrs */ 274 typedef int (*initxattrs) (struct inode *inode, 275 const struct xattr *xattr_array, void *fs_data); 276 277 278 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 279 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 280 #define __data_id_stringify(dummy, str) #str, 281 282 enum kernel_load_data_id { 283 __kernel_read_file_id(__data_id_enumify) 284 }; 285 286 static const char * const kernel_load_data_str[] = { 287 __kernel_read_file_id(__data_id_stringify) 288 }; 289 290 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 291 { 292 if ((unsigned)id >= LOADING_MAX_ID) 293 return kernel_load_data_str[LOADING_UNKNOWN]; 294 295 return kernel_load_data_str[id]; 296 } 297 298 /** 299 * lsmprop_init - initialize a lsm_prop structure 300 * @prop: Pointer to the data to initialize 301 * 302 * Set all secid for all modules to the specified value. 303 */ 304 static inline void lsmprop_init(struct lsm_prop *prop) 305 { 306 memset(prop, 0, sizeof(*prop)); 307 } 308 309 #ifdef CONFIG_SECURITY 310 311 /** 312 * lsmprop_is_set - report if there is a value in the lsm_prop 313 * @prop: Pointer to the exported LSM data 314 * 315 * Returns true if there is a value set, false otherwise 316 */ 317 static inline bool lsmprop_is_set(struct lsm_prop *prop) 318 { 319 const struct lsm_prop empty = {}; 320 321 return !!memcmp(prop, &empty, sizeof(*prop)); 322 } 323 324 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 325 int register_blocking_lsm_notifier(struct notifier_block *nb); 326 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 327 328 /* prototypes */ 329 extern int security_init(void); 330 extern int early_security_init(void); 331 extern u64 lsm_name_to_attr(const char *name); 332 333 /* Security operations */ 334 int security_binder_set_context_mgr(const struct cred *mgr); 335 int security_binder_transaction(const struct cred *from, 336 const struct cred *to); 337 int security_binder_transfer_binder(const struct cred *from, 338 const struct cred *to); 339 int security_binder_transfer_file(const struct cred *from, 340 const struct cred *to, const struct file *file); 341 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 342 int security_ptrace_traceme(struct task_struct *parent); 343 int security_capget(const struct task_struct *target, 344 kernel_cap_t *effective, 345 kernel_cap_t *inheritable, 346 kernel_cap_t *permitted); 347 int security_capset(struct cred *new, const struct cred *old, 348 const kernel_cap_t *effective, 349 const kernel_cap_t *inheritable, 350 const kernel_cap_t *permitted); 351 int security_capable(const struct cred *cred, 352 struct user_namespace *ns, 353 int cap, 354 unsigned int opts); 355 int security_quotactl(int cmds, int type, int id, const struct super_block *sb); 356 int security_quota_on(struct dentry *dentry); 357 int security_syslog(int type); 358 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 359 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 360 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 361 int security_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file); 362 int security_bprm_check(struct linux_binprm *bprm); 363 void security_bprm_committing_creds(const struct linux_binprm *bprm); 364 void security_bprm_committed_creds(const struct linux_binprm *bprm); 365 int security_fs_context_submount(struct fs_context *fc, struct super_block *reference); 366 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 367 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 368 int security_sb_alloc(struct super_block *sb); 369 void security_sb_delete(struct super_block *sb); 370 void security_sb_free(struct super_block *sb); 371 void security_free_mnt_opts(void **mnt_opts); 372 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 373 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); 374 int security_sb_remount(struct super_block *sb, void *mnt_opts); 375 int security_sb_kern_mount(const struct super_block *sb); 376 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 377 int security_sb_statfs(struct dentry *dentry); 378 int security_sb_mount(const char *dev_name, const struct path *path, 379 const char *type, unsigned long flags, void *data); 380 int security_sb_umount(struct vfsmount *mnt, int flags); 381 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 382 int security_sb_set_mnt_opts(struct super_block *sb, 383 void *mnt_opts, 384 unsigned long kern_flags, 385 unsigned long *set_kern_flags); 386 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 387 struct super_block *newsb, 388 unsigned long kern_flags, 389 unsigned long *set_kern_flags); 390 int security_move_mount(const struct path *from_path, const struct path *to_path); 391 int security_dentry_init_security(struct dentry *dentry, int mode, 392 const struct qstr *name, 393 const char **xattr_name, 394 struct lsm_context *lsmcxt); 395 int security_dentry_create_files_as(struct dentry *dentry, int mode, 396 const struct qstr *name, 397 const struct cred *old, 398 struct cred *new); 399 int security_path_notify(const struct path *path, u64 mask, 400 unsigned int obj_type); 401 int security_inode_alloc(struct inode *inode, gfp_t gfp); 402 void security_inode_free(struct inode *inode); 403 int security_inode_init_security(struct inode *inode, struct inode *dir, 404 const struct qstr *qstr, 405 initxattrs initxattrs, void *fs_data); 406 int security_inode_init_security_anon(struct inode *inode, 407 const struct qstr *name, 408 const struct inode *context_inode); 409 int security_inode_create(const struct mnt_idmap *idmap, struct inode *dir, 410 struct dentry *dentry, umode_t mode); 411 void security_inode_post_create_tmpfile(const struct mnt_idmap *idmap, 412 struct inode *inode); 413 int security_inode_link(const struct mnt_idmap *idmap, struct dentry *old_dentry, 414 struct inode *dir, struct dentry *new_dentry); 415 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 416 int security_inode_symlink(const struct mnt_idmap *idmap, struct inode *dir, 417 struct dentry *dentry, const char *old_name); 418 int security_inode_mkdir(const struct mnt_idmap *idmap, struct inode *dir, 419 struct dentry *dentry, umode_t mode); 420 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 421 int security_inode_mknod(const struct mnt_idmap *idmap, struct inode *dir, 422 struct dentry *dentry, umode_t mode, dev_t dev); 423 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 424 struct inode *new_dir, struct dentry *new_dentry, 425 unsigned int flags); 426 int security_inode_readlink(struct dentry *dentry); 427 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 428 bool rcu); 429 int security_inode_permission(const struct mnt_idmap *idmap, 430 struct inode *inode, int mask); 431 int security_inode_setattr(const struct mnt_idmap *idmap, 432 struct dentry *dentry, struct iattr *attr); 433 void security_inode_post_setattr(const struct mnt_idmap *idmap, struct dentry *dentry, 434 int ia_valid); 435 int security_inode_getattr(const struct path *path); 436 int security_inode_setxattr(const struct mnt_idmap *idmap, 437 struct dentry *dentry, const char *name, 438 const void *value, size_t size, int flags); 439 int security_inode_set_acl(const struct mnt_idmap *idmap, 440 struct dentry *dentry, const char *acl_name, 441 struct posix_acl *kacl); 442 void security_inode_post_set_acl(struct dentry *dentry, const char *acl_name, 443 struct posix_acl *kacl); 444 int security_inode_get_acl(const struct mnt_idmap *idmap, 445 struct dentry *dentry, const char *acl_name); 446 int security_inode_remove_acl(const struct mnt_idmap *idmap, 447 struct dentry *dentry, const char *acl_name); 448 void security_inode_post_remove_acl(const struct mnt_idmap *idmap, 449 struct dentry *dentry, 450 const char *acl_name); 451 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 452 const void *value, size_t size, int flags); 453 int security_inode_getxattr(struct dentry *dentry, const char *name); 454 int security_inode_listxattr(struct dentry *dentry); 455 int security_inode_removexattr(const struct mnt_idmap *idmap, 456 struct dentry *dentry, const char *name); 457 void security_inode_post_removexattr(struct dentry *dentry, const char *name); 458 int security_inode_file_setattr(struct dentry *dentry, 459 struct file_kattr *fa); 460 int security_inode_file_getattr(struct dentry *dentry, 461 struct file_kattr *fa); 462 int security_inode_need_killpriv(struct dentry *dentry); 463 int security_inode_killpriv(const struct mnt_idmap *idmap, struct dentry *dentry); 464 int security_inode_getsecurity(const struct mnt_idmap *idmap, 465 struct inode *inode, const char *name, 466 void **buffer, bool alloc); 467 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 468 int security_inode_listsecurity(struct inode *inode, char **buffer, ssize_t *remaining_size); 469 void security_inode_getlsmprop(struct inode *inode, struct lsm_prop *prop); 470 int security_inode_copy_up(struct dentry *src, struct cred **new); 471 int security_inode_copy_up_xattr(struct dentry *src, const char *name); 472 int security_inode_setintegrity(const struct inode *inode, 473 enum lsm_integrity_type type, const void *value, 474 size_t size); 475 int security_kernfs_init_security(struct kernfs_node *kn_dir, 476 struct kernfs_node *kn); 477 int security_file_permission(struct file *file, int mask); 478 int security_file_alloc(struct file *file); 479 void security_file_release(struct file *file); 480 void security_file_free(struct file *file); 481 int security_backing_file_alloc(struct file *backing_file, 482 const struct file *user_file); 483 void security_backing_file_free(struct file *backing_file); 484 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 485 int security_file_ioctl_compat(struct file *file, unsigned int cmd, 486 unsigned long arg); 487 int security_mmap_file(struct file *file, unsigned long prot, 488 unsigned long flags); 489 int security_mmap_backing_file(struct vm_area_struct *vma, 490 struct file *backing_file, 491 struct file *user_file); 492 int security_mmap_addr(unsigned long addr); 493 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 494 unsigned long prot); 495 int security_file_lock(struct file *file, unsigned int cmd); 496 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 497 void security_file_set_fowner(struct file *file); 498 int security_file_send_sigiotask(struct task_struct *tsk, 499 struct fown_struct *fown, int sig); 500 int security_file_receive(struct file *file); 501 int security_file_open(struct file *file); 502 int security_file_post_open(struct file *file, int mask); 503 int security_file_truncate(struct file *file); 504 int security_task_alloc(struct task_struct *task, u64 clone_flags); 505 void security_task_free(struct task_struct *task); 506 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 507 void security_cred_free(struct cred *cred); 508 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 509 void security_transfer_creds(struct cred *new, const struct cred *old); 510 void security_cred_getsecid(const struct cred *c, u32 *secid); 511 void security_cred_getlsmprop(const struct cred *c, struct lsm_prop *prop); 512 int security_kernel_act_as(struct cred *new, u32 secid); 513 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 514 int security_kernel_module_request(char *kmod_name); 515 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 516 int security_kernel_post_load_data(char *buf, loff_t size, 517 enum kernel_load_data_id id, 518 char *description); 519 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 520 bool contents); 521 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 522 enum kernel_read_file_id id); 523 int security_task_fix_setuid(struct cred *new, const struct cred *old, 524 int flags); 525 int security_task_fix_setgid(struct cred *new, const struct cred *old, 526 int flags); 527 int security_task_fix_setgroups(struct cred *new, const struct cred *old); 528 int security_task_setpgid(struct task_struct *p, pid_t pgid); 529 int security_task_getpgid(struct task_struct *p); 530 int security_task_getsid(struct task_struct *p); 531 void security_current_getlsmprop_subj(struct lsm_prop *prop); 532 void security_task_getlsmprop_obj(struct task_struct *p, struct lsm_prop *prop); 533 int security_task_setnice(struct task_struct *p, int nice); 534 int security_task_setioprio(struct task_struct *p, int ioprio); 535 int security_task_getioprio(struct task_struct *p); 536 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 537 unsigned int flags); 538 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 539 struct rlimit *new_rlim); 540 int security_task_setscheduler(struct task_struct *p); 541 int security_task_getscheduler(struct task_struct *p); 542 int security_task_movememory(struct task_struct *p); 543 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 544 int sig, const struct cred *cred); 545 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 546 unsigned long arg4, unsigned long arg5); 547 void security_task_to_inode(struct task_struct *p, struct inode *inode); 548 int security_create_user_ns(const struct cred *cred); 549 int security_namespace_init(struct ns_common *ns); 550 void security_namespace_free(struct ns_common *ns); 551 int security_namespace_install(const struct nsset *nsset, struct ns_common *ns); 552 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 553 void security_ipc_getlsmprop(struct kern_ipc_perm *ipcp, struct lsm_prop *prop); 554 int security_msg_msg_alloc(struct msg_msg *msg); 555 void security_msg_msg_free(struct msg_msg *msg); 556 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 557 void security_msg_queue_free(struct kern_ipc_perm *msq); 558 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 559 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 560 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 561 struct msg_msg *msg, int msqflg); 562 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 563 struct task_struct *target, long type, int mode); 564 int security_shm_alloc(struct kern_ipc_perm *shp); 565 void security_shm_free(struct kern_ipc_perm *shp); 566 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 567 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 568 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 569 int security_sem_alloc(struct kern_ipc_perm *sma); 570 void security_sem_free(struct kern_ipc_perm *sma); 571 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 572 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 573 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 574 unsigned nsops, int alter); 575 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 576 int security_getselfattr(unsigned int attr, struct lsm_ctx __user *ctx, 577 u32 __user *size, u32 flags); 578 int security_setselfattr(unsigned int attr, struct lsm_ctx __user *ctx, 579 u32 size, u32 flags); 580 int security_getprocattr(struct task_struct *p, int lsmid, const char *name, 581 char **value); 582 int security_setprocattr(int lsmid, const char *name, void *value, size_t size); 583 int security_ismaclabel(const char *name); 584 int security_secid_to_secctx(u32 secid, struct lsm_context *cp); 585 int security_lsmprop_to_secctx(struct lsm_prop *prop, struct lsm_context *cp, 586 int lsmid); 587 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 588 void security_release_secctx(struct lsm_context *cp); 589 void security_inode_invalidate_secctx(struct inode *inode); 590 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 591 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 592 int security_inode_getsecctx(struct inode *inode, struct lsm_context *cp); 593 int security_locked_down(enum lockdown_reason what); 594 int lsm_fill_user_ctx(struct lsm_ctx __user *uctx, u32 *uctx_len, 595 void *val, size_t val_len, u64 id, u64 flags); 596 int security_bdev_alloc(struct block_device *bdev); 597 void security_bdev_free(struct block_device *bdev); 598 int security_bdev_setintegrity(struct block_device *bdev, 599 enum lsm_integrity_type type, const void *value, 600 size_t size); 601 #else /* CONFIG_SECURITY */ 602 603 /** 604 * lsmprop_is_set - report if there is a value in the lsm_prop 605 * @prop: Pointer to the exported LSM data 606 * 607 * Returns true if there is a value set, false otherwise 608 */ 609 static inline bool lsmprop_is_set(struct lsm_prop *prop) 610 { 611 return false; 612 } 613 614 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 615 { 616 return 0; 617 } 618 619 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 620 { 621 return 0; 622 } 623 624 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 625 { 626 return 0; 627 } 628 629 static inline u64 lsm_name_to_attr(const char *name) 630 { 631 return LSM_ATTR_UNDEF; 632 } 633 634 static inline void security_free_mnt_opts(void **mnt_opts) 635 { 636 } 637 638 /* 639 * This is the default capabilities functionality. Most of these functions 640 * are just stubbed out, but a few must call the proper capable code. 641 */ 642 643 static inline int security_init(void) 644 { 645 return 0; 646 } 647 648 static inline int early_security_init(void) 649 { 650 return 0; 651 } 652 653 static inline int security_binder_set_context_mgr(const struct cred *mgr) 654 { 655 return 0; 656 } 657 658 static inline int security_binder_transaction(const struct cred *from, 659 const struct cred *to) 660 { 661 return 0; 662 } 663 664 static inline int security_binder_transfer_binder(const struct cred *from, 665 const struct cred *to) 666 { 667 return 0; 668 } 669 670 static inline int security_binder_transfer_file(const struct cred *from, 671 const struct cred *to, 672 const struct file *file) 673 { 674 return 0; 675 } 676 677 static inline int security_ptrace_access_check(struct task_struct *child, 678 unsigned int mode) 679 { 680 return cap_ptrace_access_check(child, mode); 681 } 682 683 static inline int security_ptrace_traceme(struct task_struct *parent) 684 { 685 return cap_ptrace_traceme(parent); 686 } 687 688 static inline int security_capget(const struct task_struct *target, 689 kernel_cap_t *effective, 690 kernel_cap_t *inheritable, 691 kernel_cap_t *permitted) 692 { 693 return cap_capget(target, effective, inheritable, permitted); 694 } 695 696 static inline int security_capset(struct cred *new, 697 const struct cred *old, 698 const kernel_cap_t *effective, 699 const kernel_cap_t *inheritable, 700 const kernel_cap_t *permitted) 701 { 702 return cap_capset(new, old, effective, inheritable, permitted); 703 } 704 705 static inline int security_capable(const struct cred *cred, 706 struct user_namespace *ns, 707 int cap, 708 unsigned int opts) 709 { 710 return cap_capable(cred, ns, cap, opts); 711 } 712 713 static inline int security_quotactl(int cmds, int type, int id, 714 const struct super_block *sb) 715 { 716 return 0; 717 } 718 719 static inline int security_quota_on(struct dentry *dentry) 720 { 721 return 0; 722 } 723 724 static inline int security_syslog(int type) 725 { 726 return 0; 727 } 728 729 static inline int security_settime64(const struct timespec64 *ts, 730 const struct timezone *tz) 731 { 732 return cap_settime(ts, tz); 733 } 734 735 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 736 { 737 return __vm_enough_memory(mm, pages, !cap_vm_enough_memory(mm, pages)); 738 } 739 740 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 741 { 742 return 0; 743 } 744 745 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 746 const struct file *file) 747 { 748 return cap_bprm_creds_from_file(bprm, file); 749 } 750 751 static inline int security_bprm_check(struct linux_binprm *bprm) 752 { 753 return 0; 754 } 755 756 static inline void security_bprm_committing_creds(const struct linux_binprm *bprm) 757 { 758 } 759 760 static inline void security_bprm_committed_creds(const struct linux_binprm *bprm) 761 { 762 } 763 764 static inline int security_fs_context_submount(struct fs_context *fc, 765 struct super_block *reference) 766 { 767 return 0; 768 } 769 static inline int security_fs_context_dup(struct fs_context *fc, 770 struct fs_context *src_fc) 771 { 772 return 0; 773 } 774 static inline int security_fs_context_parse_param(struct fs_context *fc, 775 struct fs_parameter *param) 776 { 777 return -ENOPARAM; 778 } 779 780 static inline int security_sb_alloc(struct super_block *sb) 781 { 782 return 0; 783 } 784 785 static inline void security_sb_delete(struct super_block *sb) 786 { } 787 788 static inline void security_sb_free(struct super_block *sb) 789 { } 790 791 static inline int security_sb_eat_lsm_opts(char *options, 792 void **mnt_opts) 793 { 794 return 0; 795 } 796 797 static inline int security_sb_remount(struct super_block *sb, 798 void *mnt_opts) 799 { 800 return 0; 801 } 802 803 static inline int security_sb_mnt_opts_compat(struct super_block *sb, 804 void *mnt_opts) 805 { 806 return 0; 807 } 808 809 810 static inline int security_sb_kern_mount(struct super_block *sb) 811 { 812 return 0; 813 } 814 815 static inline int security_sb_show_options(struct seq_file *m, 816 struct super_block *sb) 817 { 818 return 0; 819 } 820 821 static inline int security_sb_statfs(struct dentry *dentry) 822 { 823 return 0; 824 } 825 826 static inline int security_sb_mount(const char *dev_name, const struct path *path, 827 const char *type, unsigned long flags, 828 void *data) 829 { 830 return 0; 831 } 832 833 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 834 { 835 return 0; 836 } 837 838 static inline int security_sb_pivotroot(const struct path *old_path, 839 const struct path *new_path) 840 { 841 return 0; 842 } 843 844 static inline int security_sb_set_mnt_opts(struct super_block *sb, 845 void *mnt_opts, 846 unsigned long kern_flags, 847 unsigned long *set_kern_flags) 848 { 849 return 0; 850 } 851 852 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 853 struct super_block *newsb, 854 unsigned long kern_flags, 855 unsigned long *set_kern_flags) 856 { 857 return 0; 858 } 859 860 static inline int security_move_mount(const struct path *from_path, 861 const struct path *to_path) 862 { 863 return 0; 864 } 865 866 static inline int security_path_notify(const struct path *path, u64 mask, 867 unsigned int obj_type) 868 { 869 return 0; 870 } 871 872 static inline int security_inode_alloc(struct inode *inode, gfp_t gfp) 873 { 874 return 0; 875 } 876 877 static inline void security_inode_free(struct inode *inode) 878 { } 879 880 static inline int security_dentry_init_security(struct dentry *dentry, 881 int mode, 882 const struct qstr *name, 883 const char **xattr_name, 884 struct lsm_context *lsmcxt) 885 { 886 return -EOPNOTSUPP; 887 } 888 889 static inline int security_dentry_create_files_as(struct dentry *dentry, 890 int mode, const struct qstr *name, 891 const struct cred *old, 892 struct cred *new) 893 { 894 return 0; 895 } 896 897 898 static inline int security_inode_init_security(struct inode *inode, 899 struct inode *dir, 900 const struct qstr *qstr, 901 const initxattrs xattrs, 902 void *fs_data) 903 { 904 return 0; 905 } 906 907 static inline int security_inode_init_security_anon(struct inode *inode, 908 const struct qstr *name, 909 const struct inode *context_inode) 910 { 911 return 0; 912 } 913 914 static inline int security_inode_create(const struct mnt_idmap *idmap, 915 struct inode *dir, 916 struct dentry *dentry, 917 umode_t mode) 918 { 919 return 0; 920 } 921 922 static inline void 923 security_inode_post_create_tmpfile(const struct mnt_idmap *idmap, struct inode *inode) 924 { } 925 926 static inline int security_inode_link(const struct mnt_idmap *idmap, 927 struct dentry *old_dentry, 928 struct inode *dir, 929 struct dentry *new_dentry) 930 { 931 return 0; 932 } 933 934 static inline int security_inode_unlink(struct inode *dir, 935 struct dentry *dentry) 936 { 937 return 0; 938 } 939 940 static inline int security_inode_symlink(const struct mnt_idmap *idmap, 941 struct inode *dir, 942 struct dentry *dentry, 943 const char *old_name) 944 { 945 return 0; 946 } 947 948 static inline int security_inode_mkdir(const struct mnt_idmap *idmap, 949 struct inode *dir, 950 struct dentry *dentry, 951 int mode) 952 { 953 return 0; 954 } 955 956 static inline int security_inode_rmdir(struct inode *dir, 957 struct dentry *dentry) 958 { 959 return 0; 960 } 961 962 static inline int security_inode_mknod(const struct mnt_idmap *idmap, 963 struct inode *dir, 964 struct dentry *dentry, 965 int mode, dev_t dev) 966 { 967 return 0; 968 } 969 970 static inline int security_inode_rename(struct inode *old_dir, 971 struct dentry *old_dentry, 972 struct inode *new_dir, 973 struct dentry *new_dentry, 974 unsigned int flags) 975 { 976 return 0; 977 } 978 979 static inline int security_inode_readlink(struct dentry *dentry) 980 { 981 return 0; 982 } 983 984 static inline int security_inode_follow_link(struct dentry *dentry, 985 struct inode *inode, 986 bool rcu) 987 { 988 return 0; 989 } 990 991 static inline int security_inode_permission(const struct mnt_idmap *idmap, 992 struct inode *inode, int mask) 993 { 994 return 0; 995 } 996 997 static inline int security_inode_setattr(const struct mnt_idmap *idmap, 998 struct dentry *dentry, 999 struct iattr *attr) 1000 { 1001 return 0; 1002 } 1003 1004 static inline void 1005 security_inode_post_setattr(const struct mnt_idmap *idmap, struct dentry *dentry, 1006 int ia_valid) 1007 { } 1008 1009 static inline int security_inode_getattr(const struct path *path) 1010 { 1011 return 0; 1012 } 1013 1014 static inline int security_inode_setxattr(const struct mnt_idmap *idmap, 1015 struct dentry *dentry, const char *name, const void *value, 1016 size_t size, int flags) 1017 { 1018 return cap_inode_setxattr(dentry, name, value, size, flags); 1019 } 1020 1021 static inline int security_inode_set_acl(const struct mnt_idmap *idmap, 1022 struct dentry *dentry, 1023 const char *acl_name, 1024 struct posix_acl *kacl) 1025 { 1026 return 0; 1027 } 1028 1029 static inline void security_inode_post_set_acl(struct dentry *dentry, 1030 const char *acl_name, 1031 struct posix_acl *kacl) 1032 { } 1033 1034 static inline int security_inode_get_acl(const struct mnt_idmap *idmap, 1035 struct dentry *dentry, 1036 const char *acl_name) 1037 { 1038 return 0; 1039 } 1040 1041 static inline int security_inode_remove_acl(const struct mnt_idmap *idmap, 1042 struct dentry *dentry, 1043 const char *acl_name) 1044 { 1045 return 0; 1046 } 1047 1048 static inline void security_inode_post_remove_acl(const struct mnt_idmap *idmap, 1049 struct dentry *dentry, 1050 const char *acl_name) 1051 { } 1052 1053 static inline void security_inode_post_setxattr(struct dentry *dentry, 1054 const char *name, const void *value, size_t size, int flags) 1055 { } 1056 1057 static inline int security_inode_getxattr(struct dentry *dentry, 1058 const char *name) 1059 { 1060 return 0; 1061 } 1062 1063 static inline int security_inode_listxattr(struct dentry *dentry) 1064 { 1065 return 0; 1066 } 1067 1068 static inline int security_inode_removexattr(const struct mnt_idmap *idmap, 1069 struct dentry *dentry, 1070 const char *name) 1071 { 1072 return cap_inode_removexattr(idmap, dentry, name); 1073 } 1074 1075 static inline void security_inode_post_removexattr(struct dentry *dentry, 1076 const char *name) 1077 { } 1078 1079 static inline int security_inode_file_setattr(struct dentry *dentry, 1080 struct file_kattr *fa) 1081 { 1082 return 0; 1083 } 1084 1085 static inline int security_inode_file_getattr(struct dentry *dentry, 1086 struct file_kattr *fa) 1087 { 1088 return 0; 1089 } 1090 1091 static inline int security_inode_need_killpriv(struct dentry *dentry) 1092 { 1093 return cap_inode_need_killpriv(dentry); 1094 } 1095 1096 static inline int security_inode_killpriv(const struct mnt_idmap *idmap, 1097 struct dentry *dentry) 1098 { 1099 return cap_inode_killpriv(idmap, dentry); 1100 } 1101 1102 static inline int security_inode_getsecurity(const struct mnt_idmap *idmap, 1103 struct inode *inode, 1104 const char *name, void **buffer, 1105 bool alloc) 1106 { 1107 return cap_inode_getsecurity(idmap, inode, name, buffer, alloc); 1108 } 1109 1110 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 1111 { 1112 return -EOPNOTSUPP; 1113 } 1114 1115 static inline int security_inode_listsecurity(struct inode *inode, 1116 char **buffer, ssize_t *remaining_size) 1117 { 1118 return 0; 1119 } 1120 1121 static inline void security_inode_getlsmprop(struct inode *inode, 1122 struct lsm_prop *prop) 1123 { 1124 lsmprop_init(prop); 1125 } 1126 1127 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 1128 { 1129 return 0; 1130 } 1131 1132 static inline int security_inode_setintegrity(const struct inode *inode, 1133 enum lsm_integrity_type type, 1134 const void *value, size_t size) 1135 { 1136 return 0; 1137 } 1138 1139 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 1140 struct kernfs_node *kn) 1141 { 1142 return 0; 1143 } 1144 1145 static inline int security_inode_copy_up_xattr(struct dentry *src, const char *name) 1146 { 1147 return -EOPNOTSUPP; 1148 } 1149 1150 static inline int security_file_permission(struct file *file, int mask) 1151 { 1152 return 0; 1153 } 1154 1155 static inline int security_file_alloc(struct file *file) 1156 { 1157 return 0; 1158 } 1159 1160 static inline void security_file_release(struct file *file) 1161 { } 1162 1163 static inline void security_file_free(struct file *file) 1164 { } 1165 1166 static inline int security_backing_file_alloc(struct file *backing_file, 1167 const struct file *user_file) 1168 { 1169 return 0; 1170 } 1171 1172 static inline void security_backing_file_free(struct file *backing_file) 1173 { } 1174 1175 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 1176 unsigned long arg) 1177 { 1178 return 0; 1179 } 1180 1181 static inline int security_file_ioctl_compat(struct file *file, 1182 unsigned int cmd, 1183 unsigned long arg) 1184 { 1185 return 0; 1186 } 1187 1188 static inline int security_mmap_file(struct file *file, unsigned long prot, 1189 unsigned long flags) 1190 { 1191 return 0; 1192 } 1193 1194 static inline int security_mmap_backing_file(struct vm_area_struct *vma, 1195 struct file *backing_file, 1196 struct file *user_file) 1197 { 1198 return 0; 1199 } 1200 1201 static inline int security_mmap_addr(unsigned long addr) 1202 { 1203 return cap_mmap_addr(addr); 1204 } 1205 1206 static inline int security_file_mprotect(struct vm_area_struct *vma, 1207 unsigned long reqprot, 1208 unsigned long prot) 1209 { 1210 return 0; 1211 } 1212 1213 static inline int security_file_lock(struct file *file, unsigned int cmd) 1214 { 1215 return 0; 1216 } 1217 1218 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 1219 unsigned long arg) 1220 { 1221 return 0; 1222 } 1223 1224 static inline void security_file_set_fowner(struct file *file) 1225 { 1226 return; 1227 } 1228 1229 static inline int security_file_send_sigiotask(struct task_struct *tsk, 1230 struct fown_struct *fown, 1231 int sig) 1232 { 1233 return 0; 1234 } 1235 1236 static inline int security_file_receive(struct file *file) 1237 { 1238 return 0; 1239 } 1240 1241 static inline int security_file_open(struct file *file) 1242 { 1243 return 0; 1244 } 1245 1246 static inline int security_file_post_open(struct file *file, int mask) 1247 { 1248 return 0; 1249 } 1250 1251 static inline int security_file_truncate(struct file *file) 1252 { 1253 return 0; 1254 } 1255 1256 static inline int security_task_alloc(struct task_struct *task, 1257 u64 clone_flags) 1258 { 1259 return 0; 1260 } 1261 1262 static inline void security_task_free(struct task_struct *task) 1263 { } 1264 1265 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1266 { 1267 return 0; 1268 } 1269 1270 static inline void security_cred_free(struct cred *cred) 1271 { } 1272 1273 static inline int security_prepare_creds(struct cred *new, 1274 const struct cred *old, 1275 gfp_t gfp) 1276 { 1277 return 0; 1278 } 1279 1280 static inline void security_transfer_creds(struct cred *new, 1281 const struct cred *old) 1282 { 1283 } 1284 1285 static inline void security_cred_getsecid(const struct cred *c, u32 *secid) 1286 { 1287 *secid = 0; 1288 } 1289 1290 static inline void security_cred_getlsmprop(const struct cred *c, 1291 struct lsm_prop *prop) 1292 { } 1293 1294 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1295 { 1296 return 0; 1297 } 1298 1299 static inline int security_kernel_create_files_as(struct cred *cred, 1300 struct inode *inode) 1301 { 1302 return 0; 1303 } 1304 1305 static inline int security_kernel_module_request(char *kmod_name) 1306 { 1307 return 0; 1308 } 1309 1310 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1311 { 1312 return 0; 1313 } 1314 1315 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1316 enum kernel_load_data_id id, 1317 char *description) 1318 { 1319 return 0; 1320 } 1321 1322 static inline int security_kernel_read_file(struct file *file, 1323 enum kernel_read_file_id id, 1324 bool contents) 1325 { 1326 return 0; 1327 } 1328 1329 static inline int security_kernel_post_read_file(struct file *file, 1330 char *buf, loff_t size, 1331 enum kernel_read_file_id id) 1332 { 1333 return 0; 1334 } 1335 1336 static inline int security_task_fix_setuid(struct cred *new, 1337 const struct cred *old, 1338 int flags) 1339 { 1340 return cap_task_fix_setuid(new, old, flags); 1341 } 1342 1343 static inline int security_task_fix_setgid(struct cred *new, 1344 const struct cred *old, 1345 int flags) 1346 { 1347 return 0; 1348 } 1349 1350 static inline int security_task_fix_setgroups(struct cred *new, 1351 const struct cred *old) 1352 { 1353 return 0; 1354 } 1355 1356 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1357 { 1358 return 0; 1359 } 1360 1361 static inline int security_task_getpgid(struct task_struct *p) 1362 { 1363 return 0; 1364 } 1365 1366 static inline int security_task_getsid(struct task_struct *p) 1367 { 1368 return 0; 1369 } 1370 1371 static inline void security_current_getlsmprop_subj(struct lsm_prop *prop) 1372 { 1373 lsmprop_init(prop); 1374 } 1375 1376 static inline void security_task_getlsmprop_obj(struct task_struct *p, 1377 struct lsm_prop *prop) 1378 { 1379 lsmprop_init(prop); 1380 } 1381 1382 static inline int security_task_setnice(struct task_struct *p, int nice) 1383 { 1384 return cap_task_setnice(p, nice); 1385 } 1386 1387 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1388 { 1389 return cap_task_setioprio(p, ioprio); 1390 } 1391 1392 static inline int security_task_getioprio(struct task_struct *p) 1393 { 1394 return 0; 1395 } 1396 1397 static inline int security_task_prlimit(const struct cred *cred, 1398 const struct cred *tcred, 1399 unsigned int flags) 1400 { 1401 return 0; 1402 } 1403 1404 static inline int security_task_setrlimit(struct task_struct *p, 1405 unsigned int resource, 1406 struct rlimit *new_rlim) 1407 { 1408 return 0; 1409 } 1410 1411 static inline int security_task_setscheduler(struct task_struct *p) 1412 { 1413 return cap_task_setscheduler(p); 1414 } 1415 1416 static inline int security_task_getscheduler(struct task_struct *p) 1417 { 1418 return 0; 1419 } 1420 1421 static inline int security_task_movememory(struct task_struct *p) 1422 { 1423 return 0; 1424 } 1425 1426 static inline int security_task_kill(struct task_struct *p, 1427 struct kernel_siginfo *info, int sig, 1428 const struct cred *cred) 1429 { 1430 return 0; 1431 } 1432 1433 static inline int security_task_prctl(int option, unsigned long arg2, 1434 unsigned long arg3, 1435 unsigned long arg4, 1436 unsigned long arg5) 1437 { 1438 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1439 } 1440 1441 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1442 { } 1443 1444 static inline int security_create_user_ns(const struct cred *cred) 1445 { 1446 return 0; 1447 } 1448 1449 static inline int security_namespace_init(struct ns_common *ns) 1450 { 1451 return 0; 1452 } 1453 1454 static inline void security_namespace_free(struct ns_common *ns) 1455 { 1456 } 1457 1458 static inline int security_namespace_install(const struct nsset *nsset, 1459 struct ns_common *ns) 1460 { 1461 return 0; 1462 } 1463 1464 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1465 short flag) 1466 { 1467 return 0; 1468 } 1469 1470 static inline void security_ipc_getlsmprop(struct kern_ipc_perm *ipcp, 1471 struct lsm_prop *prop) 1472 { 1473 lsmprop_init(prop); 1474 } 1475 1476 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1477 { 1478 return 0; 1479 } 1480 1481 static inline void security_msg_msg_free(struct msg_msg *msg) 1482 { } 1483 1484 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1485 { 1486 return 0; 1487 } 1488 1489 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1490 { } 1491 1492 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1493 int msqflg) 1494 { 1495 return 0; 1496 } 1497 1498 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1499 { 1500 return 0; 1501 } 1502 1503 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1504 struct msg_msg *msg, int msqflg) 1505 { 1506 return 0; 1507 } 1508 1509 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1510 struct msg_msg *msg, 1511 struct task_struct *target, 1512 long type, int mode) 1513 { 1514 return 0; 1515 } 1516 1517 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1518 { 1519 return 0; 1520 } 1521 1522 static inline void security_shm_free(struct kern_ipc_perm *shp) 1523 { } 1524 1525 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1526 int shmflg) 1527 { 1528 return 0; 1529 } 1530 1531 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1532 { 1533 return 0; 1534 } 1535 1536 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1537 char __user *shmaddr, int shmflg) 1538 { 1539 return 0; 1540 } 1541 1542 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1543 { 1544 return 0; 1545 } 1546 1547 static inline void security_sem_free(struct kern_ipc_perm *sma) 1548 { } 1549 1550 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1551 { 1552 return 0; 1553 } 1554 1555 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1556 { 1557 return 0; 1558 } 1559 1560 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1561 struct sembuf *sops, unsigned nsops, 1562 int alter) 1563 { 1564 return 0; 1565 } 1566 1567 static inline void security_d_instantiate(struct dentry *dentry, 1568 struct inode *inode) 1569 { } 1570 1571 static inline int security_getselfattr(unsigned int attr, 1572 struct lsm_ctx __user *ctx, 1573 size_t __user *size, u32 flags) 1574 { 1575 return -EOPNOTSUPP; 1576 } 1577 1578 static inline int security_setselfattr(unsigned int attr, 1579 struct lsm_ctx __user *ctx, 1580 size_t size, u32 flags) 1581 { 1582 return -EOPNOTSUPP; 1583 } 1584 1585 static inline int security_getprocattr(struct task_struct *p, int lsmid, 1586 const char *name, char **value) 1587 { 1588 return -EINVAL; 1589 } 1590 1591 static inline int security_setprocattr(int lsmid, char *name, void *value, 1592 size_t size) 1593 { 1594 return -EINVAL; 1595 } 1596 1597 static inline int security_ismaclabel(const char *name) 1598 { 1599 return 0; 1600 } 1601 1602 static inline int security_secid_to_secctx(u32 secid, struct lsm_context *cp) 1603 { 1604 return -EOPNOTSUPP; 1605 } 1606 1607 static inline int security_lsmprop_to_secctx(struct lsm_prop *prop, 1608 struct lsm_context *cp, 1609 int lsmid) 1610 { 1611 return -EOPNOTSUPP; 1612 } 1613 1614 static inline int security_secctx_to_secid(const char *secdata, 1615 u32 seclen, 1616 u32 *secid) 1617 { 1618 return -EOPNOTSUPP; 1619 } 1620 1621 static inline void security_release_secctx(struct lsm_context *cp) 1622 { 1623 } 1624 1625 static inline void security_inode_invalidate_secctx(struct inode *inode) 1626 { 1627 } 1628 1629 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1630 { 1631 return -EOPNOTSUPP; 1632 } 1633 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1634 { 1635 return -EOPNOTSUPP; 1636 } 1637 static inline int security_inode_getsecctx(struct inode *inode, 1638 struct lsm_context *cp) 1639 { 1640 return -EOPNOTSUPP; 1641 } 1642 static inline int security_locked_down(enum lockdown_reason what) 1643 { 1644 return 0; 1645 } 1646 static inline int lsm_fill_user_ctx(struct lsm_ctx __user *uctx, 1647 u32 *uctx_len, void *val, size_t val_len, 1648 u64 id, u64 flags) 1649 { 1650 return -EOPNOTSUPP; 1651 } 1652 1653 static inline int security_bdev_alloc(struct block_device *bdev) 1654 { 1655 return 0; 1656 } 1657 1658 static inline void security_bdev_free(struct block_device *bdev) 1659 { 1660 } 1661 1662 static inline int security_bdev_setintegrity(struct block_device *bdev, 1663 enum lsm_integrity_type type, 1664 const void *value, size_t size) 1665 { 1666 return 0; 1667 } 1668 1669 #endif /* CONFIG_SECURITY */ 1670 1671 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1672 int security_post_notification(const struct cred *w_cred, 1673 const struct cred *cred, 1674 struct watch_notification *n); 1675 #else 1676 static inline int security_post_notification(const struct cred *w_cred, 1677 const struct cred *cred, 1678 struct watch_notification *n) 1679 { 1680 return 0; 1681 } 1682 #endif 1683 1684 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1685 int security_watch_key(struct key *key); 1686 #else 1687 static inline int security_watch_key(struct key *key) 1688 { 1689 return 0; 1690 } 1691 #endif 1692 1693 #ifdef CONFIG_SECURITY_NETWORK 1694 1695 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 1696 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1697 int security_unix_may_send(struct socket *sock, struct socket *other); 1698 int security_socket_create(int family, int type, int protocol, int kern); 1699 int security_socket_post_create(struct socket *sock, int family, 1700 int type, int protocol, int kern); 1701 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1702 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1703 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1704 int security_socket_listen(struct socket *sock, int backlog); 1705 int security_socket_accept(struct socket *sock, struct socket *newsock); 1706 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1707 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1708 int size, int flags); 1709 int security_socket_getsockname(struct socket *sock); 1710 int security_socket_getpeername(struct socket *sock); 1711 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1712 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1713 int security_socket_shutdown(struct socket *sock, int how); 1714 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1715 int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval, 1716 sockptr_t optlen, unsigned int len); 1717 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1718 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1719 void security_sk_free(struct sock *sk); 1720 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1721 void security_sk_classify_flow(const struct sock *sk, 1722 struct flowi_common *flic); 1723 void security_req_classify_flow(const struct request_sock *req, 1724 struct flowi_common *flic); 1725 void security_sock_graft(struct sock*sk, struct socket *parent); 1726 int security_inet_conn_request(const struct sock *sk, 1727 struct sk_buff *skb, struct request_sock *req); 1728 void security_inet_csk_clone(struct sock *newsk, 1729 const struct request_sock *req); 1730 void security_inet_conn_established(struct sock *sk, 1731 struct sk_buff *skb); 1732 int security_secmark_relabel_packet(u32 secid); 1733 void security_secmark_refcount_inc(void); 1734 void security_secmark_refcount_dec(void); 1735 int security_tun_dev_alloc_security(void **security); 1736 void security_tun_dev_free_security(void *security); 1737 int security_tun_dev_create(void); 1738 int security_tun_dev_attach_queue(void *security); 1739 int security_tun_dev_attach(struct sock *sk, void *security); 1740 int security_tun_dev_open(void *security); 1741 int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb); 1742 int security_sctp_bind_connect(struct sock *sk, int optname, 1743 struct sockaddr *address, int addrlen); 1744 void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, 1745 struct sock *newsk); 1746 int security_sctp_assoc_established(struct sctp_association *asoc, 1747 struct sk_buff *skb); 1748 int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk); 1749 1750 #else /* CONFIG_SECURITY_NETWORK */ 1751 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1752 { 1753 return 0; 1754 } 1755 1756 static inline int security_unix_stream_connect(struct sock *sock, 1757 struct sock *other, 1758 struct sock *newsk) 1759 { 1760 return 0; 1761 } 1762 1763 static inline int security_unix_may_send(struct socket *sock, 1764 struct socket *other) 1765 { 1766 return 0; 1767 } 1768 1769 static inline int security_socket_create(int family, int type, 1770 int protocol, int kern) 1771 { 1772 return 0; 1773 } 1774 1775 static inline int security_socket_post_create(struct socket *sock, 1776 int family, 1777 int type, 1778 int protocol, int kern) 1779 { 1780 return 0; 1781 } 1782 1783 static inline int security_socket_socketpair(struct socket *socka, 1784 struct socket *sockb) 1785 { 1786 return 0; 1787 } 1788 1789 static inline int security_socket_bind(struct socket *sock, 1790 struct sockaddr *address, 1791 int addrlen) 1792 { 1793 return 0; 1794 } 1795 1796 static inline int security_socket_connect(struct socket *sock, 1797 struct sockaddr *address, 1798 int addrlen) 1799 { 1800 return 0; 1801 } 1802 1803 static inline int security_socket_listen(struct socket *sock, int backlog) 1804 { 1805 return 0; 1806 } 1807 1808 static inline int security_socket_accept(struct socket *sock, 1809 struct socket *newsock) 1810 { 1811 return 0; 1812 } 1813 1814 static inline int security_socket_sendmsg(struct socket *sock, 1815 struct msghdr *msg, int size) 1816 { 1817 return 0; 1818 } 1819 1820 static inline int security_socket_recvmsg(struct socket *sock, 1821 struct msghdr *msg, int size, 1822 int flags) 1823 { 1824 return 0; 1825 } 1826 1827 static inline int security_socket_getsockname(struct socket *sock) 1828 { 1829 return 0; 1830 } 1831 1832 static inline int security_socket_getpeername(struct socket *sock) 1833 { 1834 return 0; 1835 } 1836 1837 static inline int security_socket_getsockopt(struct socket *sock, 1838 int level, int optname) 1839 { 1840 return 0; 1841 } 1842 1843 static inline int security_socket_setsockopt(struct socket *sock, 1844 int level, int optname) 1845 { 1846 return 0; 1847 } 1848 1849 static inline int security_socket_shutdown(struct socket *sock, int how) 1850 { 1851 return 0; 1852 } 1853 static inline int security_sock_rcv_skb(struct sock *sk, 1854 struct sk_buff *skb) 1855 { 1856 return 0; 1857 } 1858 1859 static inline int security_socket_getpeersec_stream(struct socket *sock, 1860 sockptr_t optval, 1861 sockptr_t optlen, 1862 unsigned int len) 1863 { 1864 return -ENOPROTOOPT; 1865 } 1866 1867 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1868 { 1869 return -ENOPROTOOPT; 1870 } 1871 1872 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1873 { 1874 return 0; 1875 } 1876 1877 static inline void security_sk_free(struct sock *sk) 1878 { 1879 } 1880 1881 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1882 { 1883 } 1884 1885 static inline void security_sk_classify_flow(const struct sock *sk, 1886 struct flowi_common *flic) 1887 { 1888 } 1889 1890 static inline void security_req_classify_flow(const struct request_sock *req, 1891 struct flowi_common *flic) 1892 { 1893 } 1894 1895 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1896 { 1897 } 1898 1899 static inline int security_inet_conn_request(const struct sock *sk, 1900 struct sk_buff *skb, struct request_sock *req) 1901 { 1902 return 0; 1903 } 1904 1905 static inline void security_inet_csk_clone(struct sock *newsk, 1906 const struct request_sock *req) 1907 { 1908 } 1909 1910 static inline void security_inet_conn_established(struct sock *sk, 1911 struct sk_buff *skb) 1912 { 1913 } 1914 1915 static inline int security_secmark_relabel_packet(u32 secid) 1916 { 1917 return 0; 1918 } 1919 1920 static inline void security_secmark_refcount_inc(void) 1921 { 1922 } 1923 1924 static inline void security_secmark_refcount_dec(void) 1925 { 1926 } 1927 1928 static inline int security_tun_dev_alloc_security(void **security) 1929 { 1930 return 0; 1931 } 1932 1933 static inline void security_tun_dev_free_security(void *security) 1934 { 1935 } 1936 1937 static inline int security_tun_dev_create(void) 1938 { 1939 return 0; 1940 } 1941 1942 static inline int security_tun_dev_attach_queue(void *security) 1943 { 1944 return 0; 1945 } 1946 1947 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1948 { 1949 return 0; 1950 } 1951 1952 static inline int security_tun_dev_open(void *security) 1953 { 1954 return 0; 1955 } 1956 1957 static inline int security_sctp_assoc_request(struct sctp_association *asoc, 1958 struct sk_buff *skb) 1959 { 1960 return 0; 1961 } 1962 1963 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1964 struct sockaddr *address, 1965 int addrlen) 1966 { 1967 return 0; 1968 } 1969 1970 static inline void security_sctp_sk_clone(struct sctp_association *asoc, 1971 struct sock *sk, 1972 struct sock *newsk) 1973 { 1974 } 1975 1976 static inline int security_sctp_assoc_established(struct sctp_association *asoc, 1977 struct sk_buff *skb) 1978 { 1979 return 0; 1980 } 1981 1982 static inline int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk) 1983 { 1984 return 0; 1985 } 1986 #endif /* CONFIG_SECURITY_NETWORK */ 1987 1988 #if defined(CONFIG_SECURITY_NETWORK) && defined(CONFIG_SECURITY_PATH) 1989 1990 int security_unix_find(const struct path *path, struct sock *other, int flags); 1991 1992 #else /* CONFIG_SECURITY_NETWORK && CONFIG_SECURITY_PATH */ 1993 static inline int security_unix_find(const struct path *path, struct sock *other, int flags) 1994 { 1995 return 0; 1996 } 1997 #endif /* CONFIG_SECURITY_NETWORK && CONFIG_SECURITY_PATH */ 1998 1999 #ifdef CONFIG_SECURITY_INFINIBAND 2000 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 2001 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 2002 int security_ib_alloc_security(void **sec); 2003 void security_ib_free_security(void *sec); 2004 #else /* CONFIG_SECURITY_INFINIBAND */ 2005 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 2006 { 2007 return 0; 2008 } 2009 2010 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 2011 { 2012 return 0; 2013 } 2014 2015 static inline int security_ib_alloc_security(void **sec) 2016 { 2017 return 0; 2018 } 2019 2020 static inline void security_ib_free_security(void *sec) 2021 { 2022 } 2023 #endif /* CONFIG_SECURITY_INFINIBAND */ 2024 2025 #ifdef CONFIG_SECURITY_NETWORK_XFRM 2026 2027 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 2028 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 2029 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 2030 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 2031 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 2032 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 2033 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 2034 struct xfrm_sec_ctx *polsec, u32 secid); 2035 int security_xfrm_state_delete(struct xfrm_state *x); 2036 void security_xfrm_state_free(struct xfrm_state *x); 2037 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); 2038 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 2039 struct xfrm_policy *xp, 2040 const struct flowi_common *flic); 2041 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 2042 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 2043 2044 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 2045 2046 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 2047 struct xfrm_user_sec_ctx *sec_ctx, 2048 gfp_t gfp) 2049 { 2050 return 0; 2051 } 2052 2053 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 2054 { 2055 return 0; 2056 } 2057 2058 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 2059 { 2060 } 2061 2062 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 2063 { 2064 return 0; 2065 } 2066 2067 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 2068 struct xfrm_user_sec_ctx *sec_ctx) 2069 { 2070 return 0; 2071 } 2072 2073 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 2074 struct xfrm_sec_ctx *polsec, u32 secid) 2075 { 2076 return 0; 2077 } 2078 2079 static inline void security_xfrm_state_free(struct xfrm_state *x) 2080 { 2081 } 2082 2083 static inline int security_xfrm_state_delete(struct xfrm_state *x) 2084 { 2085 return 0; 2086 } 2087 2088 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) 2089 { 2090 return 0; 2091 } 2092 2093 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 2094 struct xfrm_policy *xp, 2095 const struct flowi_common *flic) 2096 { 2097 return 1; 2098 } 2099 2100 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 2101 { 2102 return 0; 2103 } 2104 2105 static inline void security_skb_classify_flow(struct sk_buff *skb, 2106 struct flowi_common *flic) 2107 { 2108 } 2109 2110 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 2111 2112 #ifdef CONFIG_SECURITY_PATH 2113 int security_path_unlink(const struct path *dir, struct dentry *dentry); 2114 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 2115 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 2116 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 2117 unsigned int dev); 2118 void security_path_post_mknod(const struct mnt_idmap *idmap, struct dentry *dentry); 2119 int security_path_truncate(const struct path *path); 2120 int security_path_symlink(const struct path *dir, struct dentry *dentry, 2121 const char *old_name); 2122 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 2123 struct dentry *new_dentry); 2124 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 2125 const struct path *new_dir, struct dentry *new_dentry, 2126 unsigned int flags); 2127 int security_path_chmod(const struct path *path, umode_t mode); 2128 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 2129 int security_path_chroot(const struct path *path); 2130 #else /* CONFIG_SECURITY_PATH */ 2131 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 2132 { 2133 return 0; 2134 } 2135 2136 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 2137 umode_t mode) 2138 { 2139 return 0; 2140 } 2141 2142 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 2143 { 2144 return 0; 2145 } 2146 2147 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 2148 umode_t mode, unsigned int dev) 2149 { 2150 return 0; 2151 } 2152 2153 static inline void security_path_post_mknod(const struct mnt_idmap *idmap, 2154 struct dentry *dentry) 2155 { } 2156 2157 static inline int security_path_truncate(const struct path *path) 2158 { 2159 return 0; 2160 } 2161 2162 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 2163 const char *old_name) 2164 { 2165 return 0; 2166 } 2167 2168 static inline int security_path_link(struct dentry *old_dentry, 2169 const struct path *new_dir, 2170 struct dentry *new_dentry) 2171 { 2172 return 0; 2173 } 2174 2175 static inline int security_path_rename(const struct path *old_dir, 2176 struct dentry *old_dentry, 2177 const struct path *new_dir, 2178 struct dentry *new_dentry, 2179 unsigned int flags) 2180 { 2181 return 0; 2182 } 2183 2184 static inline int security_path_chmod(const struct path *path, umode_t mode) 2185 { 2186 return 0; 2187 } 2188 2189 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 2190 { 2191 return 0; 2192 } 2193 2194 static inline int security_path_chroot(const struct path *path) 2195 { 2196 return 0; 2197 } 2198 #endif /* CONFIG_SECURITY_PATH */ 2199 2200 #ifdef CONFIG_KEYS 2201 #ifdef CONFIG_SECURITY 2202 2203 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 2204 void security_key_free(struct key *key); 2205 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 2206 enum key_need_perm need_perm); 2207 int security_key_getsecurity(struct key *key, char **_buffer); 2208 void security_key_post_create_or_update(struct key *keyring, struct key *key, 2209 const void *payload, size_t payload_len, 2210 unsigned long flags, bool create); 2211 2212 #else 2213 2214 static inline int security_key_alloc(struct key *key, 2215 const struct cred *cred, 2216 unsigned long flags) 2217 { 2218 return 0; 2219 } 2220 2221 static inline void security_key_free(struct key *key) 2222 { 2223 } 2224 2225 static inline int security_key_permission(key_ref_t key_ref, 2226 const struct cred *cred, 2227 enum key_need_perm need_perm) 2228 { 2229 return 0; 2230 } 2231 2232 static inline int security_key_getsecurity(struct key *key, char **_buffer) 2233 { 2234 *_buffer = NULL; 2235 return 0; 2236 } 2237 2238 static inline void security_key_post_create_or_update(struct key *keyring, 2239 struct key *key, 2240 const void *payload, 2241 size_t payload_len, 2242 unsigned long flags, 2243 bool create) 2244 { } 2245 2246 #endif 2247 #endif /* CONFIG_KEYS */ 2248 2249 #ifdef CONFIG_AUDIT 2250 #ifdef CONFIG_SECURITY 2251 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule, 2252 gfp_t gfp); 2253 int security_audit_rule_known(struct audit_krule *krule); 2254 int security_audit_rule_match(struct lsm_prop *prop, u32 field, u32 op, 2255 void *lsmrule); 2256 void security_audit_rule_free(void *lsmrule); 2257 2258 #else 2259 2260 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 2261 void **lsmrule, gfp_t gfp) 2262 { 2263 return 0; 2264 } 2265 2266 static inline int security_audit_rule_known(struct audit_krule *krule) 2267 { 2268 return 0; 2269 } 2270 2271 static inline int security_audit_rule_match(struct lsm_prop *prop, u32 field, 2272 u32 op, void *lsmrule) 2273 { 2274 return 0; 2275 } 2276 2277 static inline void security_audit_rule_free(void *lsmrule) 2278 { } 2279 2280 #endif /* CONFIG_SECURITY */ 2281 #endif /* CONFIG_AUDIT */ 2282 2283 #ifdef CONFIG_SECURITYFS 2284 2285 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 2286 struct dentry *parent, void *data, 2287 const struct file_operations *fops); 2288 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 2289 struct dentry *securityfs_create_symlink(const char *name, 2290 struct dentry *parent, 2291 const char *target, 2292 const struct inode_operations *iops); 2293 extern void securityfs_remove(struct dentry *dentry); 2294 2295 #else /* CONFIG_SECURITYFS */ 2296 2297 static inline struct dentry *securityfs_create_dir(const char *name, 2298 struct dentry *parent) 2299 { 2300 return ERR_PTR(-ENODEV); 2301 } 2302 2303 static inline struct dentry *securityfs_create_file(const char *name, 2304 umode_t mode, 2305 struct dentry *parent, 2306 void *data, 2307 const struct file_operations *fops) 2308 { 2309 return ERR_PTR(-ENODEV); 2310 } 2311 2312 static inline struct dentry *securityfs_create_symlink(const char *name, 2313 struct dentry *parent, 2314 const char *target, 2315 const struct inode_operations *iops) 2316 { 2317 return ERR_PTR(-ENODEV); 2318 } 2319 2320 static inline void securityfs_remove(struct dentry *dentry) 2321 {} 2322 2323 #endif 2324 2325 #ifdef CONFIG_BPF_SYSCALL 2326 union bpf_attr; 2327 struct bpf_map; 2328 struct bpf_prog; 2329 struct bpf_token; 2330 #ifdef CONFIG_SECURITY 2331 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size, bool kernel); 2332 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 2333 extern int security_bpf_prog(struct bpf_prog *prog); 2334 extern int security_bpf_map_create(struct bpf_map *map, union bpf_attr *attr, 2335 struct bpf_token *token, bool kernel); 2336 extern void security_bpf_map_free(struct bpf_map *map); 2337 extern int security_bpf_prog_load(struct bpf_prog *prog, union bpf_attr *attr, 2338 struct bpf_token *token, bool kernel); 2339 extern void security_bpf_prog_free(struct bpf_prog *prog); 2340 extern int security_bpf_token_create(struct bpf_token *token, union bpf_attr *attr, 2341 const struct path *path); 2342 extern void security_bpf_token_free(struct bpf_token *token); 2343 extern int security_bpf_token_cmd(const struct bpf_token *token, enum bpf_cmd cmd); 2344 extern int security_bpf_token_capable(const struct bpf_token *token, int cap); 2345 #else 2346 static inline int security_bpf(int cmd, union bpf_attr *attr, 2347 unsigned int size, bool kernel) 2348 { 2349 return 0; 2350 } 2351 2352 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 2353 { 2354 return 0; 2355 } 2356 2357 static inline int security_bpf_prog(struct bpf_prog *prog) 2358 { 2359 return 0; 2360 } 2361 2362 static inline int security_bpf_map_create(struct bpf_map *map, union bpf_attr *attr, 2363 struct bpf_token *token, bool kernel) 2364 { 2365 return 0; 2366 } 2367 2368 static inline void security_bpf_map_free(struct bpf_map *map) 2369 { } 2370 2371 static inline int security_bpf_prog_load(struct bpf_prog *prog, union bpf_attr *attr, 2372 struct bpf_token *token, bool kernel) 2373 { 2374 return 0; 2375 } 2376 2377 static inline void security_bpf_prog_free(struct bpf_prog *prog) 2378 { } 2379 2380 static inline int security_bpf_token_create(struct bpf_token *token, union bpf_attr *attr, 2381 const struct path *path) 2382 { 2383 return 0; 2384 } 2385 2386 static inline void security_bpf_token_free(struct bpf_token *token) 2387 { } 2388 2389 static inline int security_bpf_token_cmd(const struct bpf_token *token, enum bpf_cmd cmd) 2390 { 2391 return 0; 2392 } 2393 2394 static inline int security_bpf_token_capable(const struct bpf_token *token, int cap) 2395 { 2396 return 0; 2397 } 2398 #endif /* CONFIG_SECURITY */ 2399 #endif /* CONFIG_BPF_SYSCALL */ 2400 2401 #ifdef CONFIG_PERF_EVENTS 2402 struct perf_event_attr; 2403 struct perf_event; 2404 2405 #ifdef CONFIG_SECURITY 2406 extern int security_perf_event_open(int type); 2407 extern int security_perf_event_alloc(struct perf_event *event); 2408 extern void security_perf_event_free(struct perf_event *event); 2409 extern int security_perf_event_read(struct perf_event *event); 2410 extern int security_perf_event_write(struct perf_event *event); 2411 #else 2412 static inline int security_perf_event_open(int type) 2413 { 2414 return 0; 2415 } 2416 2417 static inline int security_perf_event_alloc(struct perf_event *event) 2418 { 2419 return 0; 2420 } 2421 2422 static inline void security_perf_event_free(struct perf_event *event) 2423 { 2424 } 2425 2426 static inline int security_perf_event_read(struct perf_event *event) 2427 { 2428 return 0; 2429 } 2430 2431 static inline int security_perf_event_write(struct perf_event *event) 2432 { 2433 return 0; 2434 } 2435 #endif /* CONFIG_SECURITY */ 2436 #endif /* CONFIG_PERF_EVENTS */ 2437 2438 #ifdef CONFIG_IO_URING 2439 #ifdef CONFIG_SECURITY 2440 extern int security_uring_override_creds(const struct cred *new); 2441 extern int security_uring_sqpoll(void); 2442 extern int security_uring_cmd(struct io_uring_cmd *ioucmd); 2443 extern int security_uring_allowed(void); 2444 #else 2445 static inline int security_uring_override_creds(const struct cred *new) 2446 { 2447 return 0; 2448 } 2449 static inline int security_uring_sqpoll(void) 2450 { 2451 return 0; 2452 } 2453 static inline int security_uring_cmd(struct io_uring_cmd *ioucmd) 2454 { 2455 return 0; 2456 } 2457 static inline int security_uring_allowed(void) 2458 { 2459 return 0; 2460 } 2461 #endif /* CONFIG_SECURITY */ 2462 #endif /* CONFIG_IO_URING */ 2463 2464 #ifdef CONFIG_SECURITY 2465 extern void security_initramfs_populated(void); 2466 #else 2467 static inline void security_initramfs_populated(void) 2468 { 2469 } 2470 #endif /* CONFIG_SECURITY */ 2471 2472 #endif /* ! __LINUX_SECURITY_H */ 2473