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