1 /* 2 * Linux Security plug 3 * 4 * Copyright (C) 2001 WireX Communications, Inc <[email protected]> 5 * Copyright (C) 2001 Greg Kroah-Hartman <[email protected]> 6 * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]> 7 * Copyright (C) 2001 James Morris <[email protected]> 8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) 9 * Copyright (C) 2016 Mellanox Techonologies 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * Due to this file being licensed under the GPL there is controversy over 17 * whether this permits you to write a module that #includes this file 18 * without placing your module under the GPL. Please consult a lawyer for 19 * advice before doing this. 20 * 21 */ 22 23 #ifndef __LINUX_SECURITY_H 24 #define __LINUX_SECURITY_H 25 26 #include <linux/kernel_read_file.h> 27 #include <linux/key.h> 28 #include <linux/capability.h> 29 #include <linux/fs.h> 30 #include <linux/slab.h> 31 #include <linux/err.h> 32 #include <linux/string.h> 33 #include <linux/mm.h> 34 #include <linux/sockptr.h> 35 36 struct linux_binprm; 37 struct cred; 38 struct rlimit; 39 struct kernel_siginfo; 40 struct sembuf; 41 struct kern_ipc_perm; 42 struct audit_context; 43 struct super_block; 44 struct inode; 45 struct dentry; 46 struct file; 47 struct vfsmount; 48 struct path; 49 struct qstr; 50 struct iattr; 51 struct fown_struct; 52 struct file_operations; 53 struct msg_msg; 54 struct xattr; 55 struct kernfs_node; 56 struct xfrm_sec_ctx; 57 struct mm_struct; 58 struct fs_context; 59 struct fs_parameter; 60 enum fs_value_type; 61 struct watch; 62 struct watch_notification; 63 struct lsm_ctx; 64 65 /* Default (no) options for the capable function */ 66 #define CAP_OPT_NONE 0x0 67 /* If capable should audit the security request */ 68 #define CAP_OPT_NOAUDIT BIT(1) 69 /* If capable is being called by a setid function */ 70 #define CAP_OPT_INSETID BIT(2) 71 72 /* LSM Agnostic defines for security_sb_set_mnt_opts() flags */ 73 #define SECURITY_LSM_NATIVE_LABELS 1 74 75 struct ctl_table; 76 struct audit_krule; 77 struct user_namespace; 78 struct timezone; 79 80 enum lsm_event { 81 LSM_POLICY_CHANGE, 82 }; 83 84 /* 85 * These are reasons that can be passed to the security_locked_down() 86 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the 87 * ability for userland to modify kernel code) are placed before 88 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel 89 * confidentiality (ie, the ability for userland to extract 90 * information from the running kernel that would otherwise be 91 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX. 92 * 93 * LSM authors should note that the semantics of any given lockdown 94 * reason are not guaranteed to be stable - the same reason may block 95 * one set of features in one kernel release, and a slightly different 96 * set of features in a later kernel release. LSMs that seek to expose 97 * lockdown policy at any level of granularity other than "none", 98 * "integrity" or "confidentiality" are responsible for either 99 * ensuring that they expose a consistent level of functionality to 100 * userland, or ensuring that userland is aware that this is 101 * potentially a moving target. It is easy to misuse this information 102 * in a way that could break userspace. Please be careful not to do 103 * so. 104 * 105 * If you add to this, remember to extend lockdown_reasons in 106 * security/lockdown/lockdown.c. 107 */ 108 enum lockdown_reason { 109 LOCKDOWN_NONE, 110 LOCKDOWN_MODULE_SIGNATURE, 111 LOCKDOWN_DEV_MEM, 112 LOCKDOWN_EFI_TEST, 113 LOCKDOWN_KEXEC, 114 LOCKDOWN_HIBERNATION, 115 LOCKDOWN_PCI_ACCESS, 116 LOCKDOWN_IOPORT, 117 LOCKDOWN_MSR, 118 LOCKDOWN_ACPI_TABLES, 119 LOCKDOWN_DEVICE_TREE, 120 LOCKDOWN_PCMCIA_CIS, 121 LOCKDOWN_TIOCSSERIAL, 122 LOCKDOWN_MODULE_PARAMETERS, 123 LOCKDOWN_MMIOTRACE, 124 LOCKDOWN_DEBUGFS, 125 LOCKDOWN_XMON_WR, 126 LOCKDOWN_BPF_WRITE_USER, 127 LOCKDOWN_DBG_WRITE_KERNEL, 128 LOCKDOWN_RTAS_ERROR_INJECTION, 129 LOCKDOWN_INTEGRITY_MAX, 130 LOCKDOWN_KCORE, 131 LOCKDOWN_KPROBES, 132 LOCKDOWN_BPF_READ_KERNEL, 133 LOCKDOWN_DBG_READ_KERNEL, 134 LOCKDOWN_PERF, 135 LOCKDOWN_TRACEFS, 136 LOCKDOWN_XMON_RW, 137 LOCKDOWN_XFRM_SECRET, 138 LOCKDOWN_CONFIDENTIALITY_MAX, 139 }; 140 141 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1]; 142 extern u32 lsm_active_cnt; 143 extern const struct lsm_id *lsm_idlist[]; 144 145 /* These functions are in security/commoncap.c */ 146 extern int cap_capable(const struct cred *cred, struct user_namespace *ns, 147 int cap, unsigned int opts); 148 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz); 149 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode); 150 extern int cap_ptrace_traceme(struct task_struct *parent); 151 extern int cap_capget(const struct task_struct *target, kernel_cap_t *effective, 152 kernel_cap_t *inheritable, kernel_cap_t *permitted); 153 extern int cap_capset(struct cred *new, const struct cred *old, 154 const kernel_cap_t *effective, 155 const kernel_cap_t *inheritable, 156 const kernel_cap_t *permitted); 157 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file); 158 int cap_inode_setxattr(struct dentry *dentry, const char *name, 159 const void *value, size_t size, int flags); 160 int cap_inode_removexattr(struct mnt_idmap *idmap, 161 struct dentry *dentry, const char *name); 162 int cap_inode_need_killpriv(struct dentry *dentry); 163 int cap_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); 164 int cap_inode_getsecurity(struct mnt_idmap *idmap, 165 struct inode *inode, const char *name, void **buffer, 166 bool alloc); 167 extern int cap_mmap_addr(unsigned long addr); 168 extern int cap_mmap_file(struct file *file, unsigned long reqprot, 169 unsigned long prot, unsigned long flags); 170 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags); 171 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3, 172 unsigned long arg4, unsigned long arg5); 173 extern int cap_task_setscheduler(struct task_struct *p); 174 extern int cap_task_setioprio(struct task_struct *p, int ioprio); 175 extern int cap_task_setnice(struct task_struct *p, int nice); 176 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages); 177 178 struct msghdr; 179 struct sk_buff; 180 struct sock; 181 struct sockaddr; 182 struct socket; 183 struct flowi_common; 184 struct dst_entry; 185 struct xfrm_selector; 186 struct xfrm_policy; 187 struct xfrm_state; 188 struct xfrm_user_sec_ctx; 189 struct seq_file; 190 struct sctp_association; 191 192 #ifdef CONFIG_MMU 193 extern unsigned long mmap_min_addr; 194 extern unsigned long dac_mmap_min_addr; 195 #else 196 #define mmap_min_addr 0UL 197 #define dac_mmap_min_addr 0UL 198 #endif 199 200 /* 201 * Values used in the task_security_ops calls 202 */ 203 /* setuid or setgid, id0 == uid or gid */ 204 #define LSM_SETID_ID 1 205 206 /* setreuid or setregid, id0 == real, id1 == eff */ 207 #define LSM_SETID_RE 2 208 209 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */ 210 #define LSM_SETID_RES 4 211 212 /* setfsuid or setfsgid, id0 == fsuid or fsgid */ 213 #define LSM_SETID_FS 8 214 215 /* Flags for security_task_prlimit(). */ 216 #define LSM_PRLIMIT_READ 1 217 #define LSM_PRLIMIT_WRITE 2 218 219 /* forward declares to avoid warnings */ 220 struct sched_param; 221 struct request_sock; 222 223 /* bprm->unsafe reasons */ 224 #define LSM_UNSAFE_SHARE 1 225 #define LSM_UNSAFE_PTRACE 2 226 #define LSM_UNSAFE_NO_NEW_PRIVS 4 227 228 #ifdef CONFIG_MMU 229 extern int mmap_min_addr_handler(struct ctl_table *table, int write, 230 void *buffer, size_t *lenp, loff_t *ppos); 231 #endif 232 233 /* security_inode_init_security callback function to write xattrs */ 234 typedef int (*initxattrs) (struct inode *inode, 235 const struct xattr *xattr_array, void *fs_data); 236 237 238 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */ 239 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM, 240 #define __data_id_stringify(dummy, str) #str, 241 242 enum kernel_load_data_id { 243 __kernel_read_file_id(__data_id_enumify) 244 }; 245 246 static const char * const kernel_load_data_str[] = { 247 __kernel_read_file_id(__data_id_stringify) 248 }; 249 250 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id) 251 { 252 if ((unsigned)id >= LOADING_MAX_ID) 253 return kernel_load_data_str[LOADING_UNKNOWN]; 254 255 return kernel_load_data_str[id]; 256 } 257 258 #ifdef CONFIG_SECURITY 259 260 int call_blocking_lsm_notifier(enum lsm_event event, void *data); 261 int register_blocking_lsm_notifier(struct notifier_block *nb); 262 int unregister_blocking_lsm_notifier(struct notifier_block *nb); 263 264 /* prototypes */ 265 extern int security_init(void); 266 extern int early_security_init(void); 267 268 /* Security operations */ 269 int security_binder_set_context_mgr(const struct cred *mgr); 270 int security_binder_transaction(const struct cred *from, 271 const struct cred *to); 272 int security_binder_transfer_binder(const struct cred *from, 273 const struct cred *to); 274 int security_binder_transfer_file(const struct cred *from, 275 const struct cred *to, const struct file *file); 276 int security_ptrace_access_check(struct task_struct *child, unsigned int mode); 277 int security_ptrace_traceme(struct task_struct *parent); 278 int security_capget(const struct task_struct *target, 279 kernel_cap_t *effective, 280 kernel_cap_t *inheritable, 281 kernel_cap_t *permitted); 282 int security_capset(struct cred *new, const struct cred *old, 283 const kernel_cap_t *effective, 284 const kernel_cap_t *inheritable, 285 const kernel_cap_t *permitted); 286 int security_capable(const struct cred *cred, 287 struct user_namespace *ns, 288 int cap, 289 unsigned int opts); 290 int security_quotactl(int cmds, int type, int id, const struct super_block *sb); 291 int security_quota_on(struct dentry *dentry); 292 int security_syslog(int type); 293 int security_settime64(const struct timespec64 *ts, const struct timezone *tz); 294 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages); 295 int security_bprm_creds_for_exec(struct linux_binprm *bprm); 296 int security_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file); 297 int security_bprm_check(struct linux_binprm *bprm); 298 void security_bprm_committing_creds(const struct linux_binprm *bprm); 299 void security_bprm_committed_creds(const struct linux_binprm *bprm); 300 int security_fs_context_submount(struct fs_context *fc, struct super_block *reference); 301 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc); 302 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param); 303 int security_sb_alloc(struct super_block *sb); 304 void security_sb_delete(struct super_block *sb); 305 void security_sb_free(struct super_block *sb); 306 void security_free_mnt_opts(void **mnt_opts); 307 int security_sb_eat_lsm_opts(char *options, void **mnt_opts); 308 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts); 309 int security_sb_remount(struct super_block *sb, void *mnt_opts); 310 int security_sb_kern_mount(const struct super_block *sb); 311 int security_sb_show_options(struct seq_file *m, struct super_block *sb); 312 int security_sb_statfs(struct dentry *dentry); 313 int security_sb_mount(const char *dev_name, const struct path *path, 314 const char *type, unsigned long flags, void *data); 315 int security_sb_umount(struct vfsmount *mnt, int flags); 316 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path); 317 int security_sb_set_mnt_opts(struct super_block *sb, 318 void *mnt_opts, 319 unsigned long kern_flags, 320 unsigned long *set_kern_flags); 321 int security_sb_clone_mnt_opts(const struct super_block *oldsb, 322 struct super_block *newsb, 323 unsigned long kern_flags, 324 unsigned long *set_kern_flags); 325 int security_move_mount(const struct path *from_path, const struct path *to_path); 326 int security_dentry_init_security(struct dentry *dentry, int mode, 327 const struct qstr *name, 328 const char **xattr_name, void **ctx, 329 u32 *ctxlen); 330 int security_dentry_create_files_as(struct dentry *dentry, int mode, 331 struct qstr *name, 332 const struct cred *old, 333 struct cred *new); 334 int security_path_notify(const struct path *path, u64 mask, 335 unsigned int obj_type); 336 int security_inode_alloc(struct inode *inode); 337 void security_inode_free(struct inode *inode); 338 int security_inode_init_security(struct inode *inode, struct inode *dir, 339 const struct qstr *qstr, 340 initxattrs initxattrs, void *fs_data); 341 int security_inode_init_security_anon(struct inode *inode, 342 const struct qstr *name, 343 const struct inode *context_inode); 344 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode); 345 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 346 struct dentry *new_dentry); 347 int security_inode_unlink(struct inode *dir, struct dentry *dentry); 348 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 349 const char *old_name); 350 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); 351 int security_inode_rmdir(struct inode *dir, struct dentry *dentry); 352 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev); 353 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 354 struct inode *new_dir, struct dentry *new_dentry, 355 unsigned int flags); 356 int security_inode_readlink(struct dentry *dentry); 357 int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 358 bool rcu); 359 int security_inode_permission(struct inode *inode, int mask); 360 int security_inode_setattr(struct mnt_idmap *idmap, 361 struct dentry *dentry, struct iattr *attr); 362 int security_inode_getattr(const struct path *path); 363 int security_inode_setxattr(struct mnt_idmap *idmap, 364 struct dentry *dentry, const char *name, 365 const void *value, size_t size, int flags); 366 int security_inode_set_acl(struct mnt_idmap *idmap, 367 struct dentry *dentry, const char *acl_name, 368 struct posix_acl *kacl); 369 int security_inode_get_acl(struct mnt_idmap *idmap, 370 struct dentry *dentry, const char *acl_name); 371 int security_inode_remove_acl(struct mnt_idmap *idmap, 372 struct dentry *dentry, const char *acl_name); 373 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 374 const void *value, size_t size, int flags); 375 int security_inode_getxattr(struct dentry *dentry, const char *name); 376 int security_inode_listxattr(struct dentry *dentry); 377 int security_inode_removexattr(struct mnt_idmap *idmap, 378 struct dentry *dentry, const char *name); 379 int security_inode_need_killpriv(struct dentry *dentry); 380 int security_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry); 381 int security_inode_getsecurity(struct mnt_idmap *idmap, 382 struct inode *inode, const char *name, 383 void **buffer, bool alloc); 384 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags); 385 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size); 386 void security_inode_getsecid(struct inode *inode, u32 *secid); 387 int security_inode_copy_up(struct dentry *src, struct cred **new); 388 int security_inode_copy_up_xattr(const char *name); 389 int security_kernfs_init_security(struct kernfs_node *kn_dir, 390 struct kernfs_node *kn); 391 int security_file_permission(struct file *file, int mask); 392 int security_file_alloc(struct file *file); 393 void security_file_free(struct file *file); 394 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 395 int security_mmap_file(struct file *file, unsigned long prot, 396 unsigned long flags); 397 int security_mmap_addr(unsigned long addr); 398 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 399 unsigned long prot); 400 int security_file_lock(struct file *file, unsigned int cmd); 401 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg); 402 void security_file_set_fowner(struct file *file); 403 int security_file_send_sigiotask(struct task_struct *tsk, 404 struct fown_struct *fown, int sig); 405 int security_file_receive(struct file *file); 406 int security_file_open(struct file *file); 407 int security_file_truncate(struct file *file); 408 int security_task_alloc(struct task_struct *task, unsigned long clone_flags); 409 void security_task_free(struct task_struct *task); 410 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); 411 void security_cred_free(struct cred *cred); 412 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); 413 void security_transfer_creds(struct cred *new, const struct cred *old); 414 void security_cred_getsecid(const struct cred *c, u32 *secid); 415 int security_kernel_act_as(struct cred *new, u32 secid); 416 int security_kernel_create_files_as(struct cred *new, struct inode *inode); 417 int security_kernel_module_request(char *kmod_name); 418 int security_kernel_load_data(enum kernel_load_data_id id, bool contents); 419 int security_kernel_post_load_data(char *buf, loff_t size, 420 enum kernel_load_data_id id, 421 char *description); 422 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, 423 bool contents); 424 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, 425 enum kernel_read_file_id id); 426 int security_task_fix_setuid(struct cred *new, const struct cred *old, 427 int flags); 428 int security_task_fix_setgid(struct cred *new, const struct cred *old, 429 int flags); 430 int security_task_fix_setgroups(struct cred *new, const struct cred *old); 431 int security_task_setpgid(struct task_struct *p, pid_t pgid); 432 int security_task_getpgid(struct task_struct *p); 433 int security_task_getsid(struct task_struct *p); 434 void security_current_getsecid_subj(u32 *secid); 435 void security_task_getsecid_obj(struct task_struct *p, u32 *secid); 436 int security_task_setnice(struct task_struct *p, int nice); 437 int security_task_setioprio(struct task_struct *p, int ioprio); 438 int security_task_getioprio(struct task_struct *p); 439 int security_task_prlimit(const struct cred *cred, const struct cred *tcred, 440 unsigned int flags); 441 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 442 struct rlimit *new_rlim); 443 int security_task_setscheduler(struct task_struct *p); 444 int security_task_getscheduler(struct task_struct *p); 445 int security_task_movememory(struct task_struct *p); 446 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, 447 int sig, const struct cred *cred); 448 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 449 unsigned long arg4, unsigned long arg5); 450 void security_task_to_inode(struct task_struct *p, struct inode *inode); 451 int security_create_user_ns(const struct cred *cred); 452 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag); 453 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid); 454 int security_msg_msg_alloc(struct msg_msg *msg); 455 void security_msg_msg_free(struct msg_msg *msg); 456 int security_msg_queue_alloc(struct kern_ipc_perm *msq); 457 void security_msg_queue_free(struct kern_ipc_perm *msq); 458 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg); 459 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd); 460 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 461 struct msg_msg *msg, int msqflg); 462 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, 463 struct task_struct *target, long type, int mode); 464 int security_shm_alloc(struct kern_ipc_perm *shp); 465 void security_shm_free(struct kern_ipc_perm *shp); 466 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg); 467 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd); 468 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg); 469 int security_sem_alloc(struct kern_ipc_perm *sma); 470 void security_sem_free(struct kern_ipc_perm *sma); 471 int security_sem_associate(struct kern_ipc_perm *sma, int semflg); 472 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd); 473 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, 474 unsigned nsops, int alter); 475 void security_d_instantiate(struct dentry *dentry, struct inode *inode); 476 int security_getselfattr(unsigned int attr, struct lsm_ctx __user *ctx, 477 size_t __user *size, u32 flags); 478 int security_setselfattr(unsigned int attr, struct lsm_ctx __user *ctx, 479 size_t size, u32 flags); 480 int security_getprocattr(struct task_struct *p, int lsmid, const char *name, 481 char **value); 482 int security_setprocattr(int lsmid, const char *name, void *value, size_t size); 483 int security_netlink_send(struct sock *sk, struct sk_buff *skb); 484 int security_ismaclabel(const char *name); 485 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen); 486 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid); 487 void security_release_secctx(char *secdata, u32 seclen); 488 void security_inode_invalidate_secctx(struct inode *inode); 489 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); 490 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); 491 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); 492 int security_locked_down(enum lockdown_reason what); 493 #else /* CONFIG_SECURITY */ 494 495 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) 496 { 497 return 0; 498 } 499 500 static inline int register_blocking_lsm_notifier(struct notifier_block *nb) 501 { 502 return 0; 503 } 504 505 static inline int unregister_blocking_lsm_notifier(struct notifier_block *nb) 506 { 507 return 0; 508 } 509 510 static inline void security_free_mnt_opts(void **mnt_opts) 511 { 512 } 513 514 /* 515 * This is the default capabilities functionality. Most of these functions 516 * are just stubbed out, but a few must call the proper capable code. 517 */ 518 519 static inline int security_init(void) 520 { 521 return 0; 522 } 523 524 static inline int early_security_init(void) 525 { 526 return 0; 527 } 528 529 static inline int security_binder_set_context_mgr(const struct cred *mgr) 530 { 531 return 0; 532 } 533 534 static inline int security_binder_transaction(const struct cred *from, 535 const struct cred *to) 536 { 537 return 0; 538 } 539 540 static inline int security_binder_transfer_binder(const struct cred *from, 541 const struct cred *to) 542 { 543 return 0; 544 } 545 546 static inline int security_binder_transfer_file(const struct cred *from, 547 const struct cred *to, 548 const struct file *file) 549 { 550 return 0; 551 } 552 553 static inline int security_ptrace_access_check(struct task_struct *child, 554 unsigned int mode) 555 { 556 return cap_ptrace_access_check(child, mode); 557 } 558 559 static inline int security_ptrace_traceme(struct task_struct *parent) 560 { 561 return cap_ptrace_traceme(parent); 562 } 563 564 static inline int security_capget(const struct task_struct *target, 565 kernel_cap_t *effective, 566 kernel_cap_t *inheritable, 567 kernel_cap_t *permitted) 568 { 569 return cap_capget(target, effective, inheritable, permitted); 570 } 571 572 static inline int security_capset(struct cred *new, 573 const struct cred *old, 574 const kernel_cap_t *effective, 575 const kernel_cap_t *inheritable, 576 const kernel_cap_t *permitted) 577 { 578 return cap_capset(new, old, effective, inheritable, permitted); 579 } 580 581 static inline int security_capable(const struct cred *cred, 582 struct user_namespace *ns, 583 int cap, 584 unsigned int opts) 585 { 586 return cap_capable(cred, ns, cap, opts); 587 } 588 589 static inline int security_quotactl(int cmds, int type, int id, 590 const struct super_block *sb) 591 { 592 return 0; 593 } 594 595 static inline int security_quota_on(struct dentry *dentry) 596 { 597 return 0; 598 } 599 600 static inline int security_syslog(int type) 601 { 602 return 0; 603 } 604 605 static inline int security_settime64(const struct timespec64 *ts, 606 const struct timezone *tz) 607 { 608 return cap_settime(ts, tz); 609 } 610 611 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 612 { 613 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages)); 614 } 615 616 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm) 617 { 618 return 0; 619 } 620 621 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm, 622 const struct file *file) 623 { 624 return cap_bprm_creds_from_file(bprm, file); 625 } 626 627 static inline int security_bprm_check(struct linux_binprm *bprm) 628 { 629 return 0; 630 } 631 632 static inline void security_bprm_committing_creds(const struct linux_binprm *bprm) 633 { 634 } 635 636 static inline void security_bprm_committed_creds(const struct linux_binprm *bprm) 637 { 638 } 639 640 static inline int security_fs_context_submount(struct fs_context *fc, 641 struct super_block *reference) 642 { 643 return 0; 644 } 645 static inline int security_fs_context_dup(struct fs_context *fc, 646 struct fs_context *src_fc) 647 { 648 return 0; 649 } 650 static inline int security_fs_context_parse_param(struct fs_context *fc, 651 struct fs_parameter *param) 652 { 653 return -ENOPARAM; 654 } 655 656 static inline int security_sb_alloc(struct super_block *sb) 657 { 658 return 0; 659 } 660 661 static inline void security_sb_delete(struct super_block *sb) 662 { } 663 664 static inline void security_sb_free(struct super_block *sb) 665 { } 666 667 static inline int security_sb_eat_lsm_opts(char *options, 668 void **mnt_opts) 669 { 670 return 0; 671 } 672 673 static inline int security_sb_remount(struct super_block *sb, 674 void *mnt_opts) 675 { 676 return 0; 677 } 678 679 static inline int security_sb_mnt_opts_compat(struct super_block *sb, 680 void *mnt_opts) 681 { 682 return 0; 683 } 684 685 686 static inline int security_sb_kern_mount(struct super_block *sb) 687 { 688 return 0; 689 } 690 691 static inline int security_sb_show_options(struct seq_file *m, 692 struct super_block *sb) 693 { 694 return 0; 695 } 696 697 static inline int security_sb_statfs(struct dentry *dentry) 698 { 699 return 0; 700 } 701 702 static inline int security_sb_mount(const char *dev_name, const struct path *path, 703 const char *type, unsigned long flags, 704 void *data) 705 { 706 return 0; 707 } 708 709 static inline int security_sb_umount(struct vfsmount *mnt, int flags) 710 { 711 return 0; 712 } 713 714 static inline int security_sb_pivotroot(const struct path *old_path, 715 const struct path *new_path) 716 { 717 return 0; 718 } 719 720 static inline int security_sb_set_mnt_opts(struct super_block *sb, 721 void *mnt_opts, 722 unsigned long kern_flags, 723 unsigned long *set_kern_flags) 724 { 725 return 0; 726 } 727 728 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, 729 struct super_block *newsb, 730 unsigned long kern_flags, 731 unsigned long *set_kern_flags) 732 { 733 return 0; 734 } 735 736 static inline int security_move_mount(const struct path *from_path, 737 const struct path *to_path) 738 { 739 return 0; 740 } 741 742 static inline int security_path_notify(const struct path *path, u64 mask, 743 unsigned int obj_type) 744 { 745 return 0; 746 } 747 748 static inline int security_inode_alloc(struct inode *inode) 749 { 750 return 0; 751 } 752 753 static inline void security_inode_free(struct inode *inode) 754 { } 755 756 static inline int security_dentry_init_security(struct dentry *dentry, 757 int mode, 758 const struct qstr *name, 759 const char **xattr_name, 760 void **ctx, 761 u32 *ctxlen) 762 { 763 return -EOPNOTSUPP; 764 } 765 766 static inline int security_dentry_create_files_as(struct dentry *dentry, 767 int mode, struct qstr *name, 768 const struct cred *old, 769 struct cred *new) 770 { 771 return 0; 772 } 773 774 775 static inline int security_inode_init_security(struct inode *inode, 776 struct inode *dir, 777 const struct qstr *qstr, 778 const initxattrs xattrs, 779 void *fs_data) 780 { 781 return 0; 782 } 783 784 static inline int security_inode_init_security_anon(struct inode *inode, 785 const struct qstr *name, 786 const struct inode *context_inode) 787 { 788 return 0; 789 } 790 791 static inline int security_inode_create(struct inode *dir, 792 struct dentry *dentry, 793 umode_t mode) 794 { 795 return 0; 796 } 797 798 static inline int security_inode_link(struct dentry *old_dentry, 799 struct inode *dir, 800 struct dentry *new_dentry) 801 { 802 return 0; 803 } 804 805 static inline int security_inode_unlink(struct inode *dir, 806 struct dentry *dentry) 807 { 808 return 0; 809 } 810 811 static inline int security_inode_symlink(struct inode *dir, 812 struct dentry *dentry, 813 const char *old_name) 814 { 815 return 0; 816 } 817 818 static inline int security_inode_mkdir(struct inode *dir, 819 struct dentry *dentry, 820 int mode) 821 { 822 return 0; 823 } 824 825 static inline int security_inode_rmdir(struct inode *dir, 826 struct dentry *dentry) 827 { 828 return 0; 829 } 830 831 static inline int security_inode_mknod(struct inode *dir, 832 struct dentry *dentry, 833 int mode, dev_t dev) 834 { 835 return 0; 836 } 837 838 static inline int security_inode_rename(struct inode *old_dir, 839 struct dentry *old_dentry, 840 struct inode *new_dir, 841 struct dentry *new_dentry, 842 unsigned int flags) 843 { 844 return 0; 845 } 846 847 static inline int security_inode_readlink(struct dentry *dentry) 848 { 849 return 0; 850 } 851 852 static inline int security_inode_follow_link(struct dentry *dentry, 853 struct inode *inode, 854 bool rcu) 855 { 856 return 0; 857 } 858 859 static inline int security_inode_permission(struct inode *inode, int mask) 860 { 861 return 0; 862 } 863 864 static inline int security_inode_setattr(struct mnt_idmap *idmap, 865 struct dentry *dentry, 866 struct iattr *attr) 867 { 868 return 0; 869 } 870 871 static inline int security_inode_getattr(const struct path *path) 872 { 873 return 0; 874 } 875 876 static inline int security_inode_setxattr(struct mnt_idmap *idmap, 877 struct dentry *dentry, const char *name, const void *value, 878 size_t size, int flags) 879 { 880 return cap_inode_setxattr(dentry, name, value, size, flags); 881 } 882 883 static inline int security_inode_set_acl(struct mnt_idmap *idmap, 884 struct dentry *dentry, 885 const char *acl_name, 886 struct posix_acl *kacl) 887 { 888 return 0; 889 } 890 891 static inline int security_inode_get_acl(struct mnt_idmap *idmap, 892 struct dentry *dentry, 893 const char *acl_name) 894 { 895 return 0; 896 } 897 898 static inline int security_inode_remove_acl(struct mnt_idmap *idmap, 899 struct dentry *dentry, 900 const char *acl_name) 901 { 902 return 0; 903 } 904 905 static inline void security_inode_post_setxattr(struct dentry *dentry, 906 const char *name, const void *value, size_t size, int flags) 907 { } 908 909 static inline int security_inode_getxattr(struct dentry *dentry, 910 const char *name) 911 { 912 return 0; 913 } 914 915 static inline int security_inode_listxattr(struct dentry *dentry) 916 { 917 return 0; 918 } 919 920 static inline int security_inode_removexattr(struct mnt_idmap *idmap, 921 struct dentry *dentry, 922 const char *name) 923 { 924 return cap_inode_removexattr(idmap, dentry, name); 925 } 926 927 static inline int security_inode_need_killpriv(struct dentry *dentry) 928 { 929 return cap_inode_need_killpriv(dentry); 930 } 931 932 static inline int security_inode_killpriv(struct mnt_idmap *idmap, 933 struct dentry *dentry) 934 { 935 return cap_inode_killpriv(idmap, dentry); 936 } 937 938 static inline int security_inode_getsecurity(struct mnt_idmap *idmap, 939 struct inode *inode, 940 const char *name, void **buffer, 941 bool alloc) 942 { 943 return cap_inode_getsecurity(idmap, inode, name, buffer, alloc); 944 } 945 946 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 947 { 948 return -EOPNOTSUPP; 949 } 950 951 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 952 { 953 return 0; 954 } 955 956 static inline void security_inode_getsecid(struct inode *inode, u32 *secid) 957 { 958 *secid = 0; 959 } 960 961 static inline int security_inode_copy_up(struct dentry *src, struct cred **new) 962 { 963 return 0; 964 } 965 966 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir, 967 struct kernfs_node *kn) 968 { 969 return 0; 970 } 971 972 static inline int security_inode_copy_up_xattr(const char *name) 973 { 974 return -EOPNOTSUPP; 975 } 976 977 static inline int security_file_permission(struct file *file, int mask) 978 { 979 return 0; 980 } 981 982 static inline int security_file_alloc(struct file *file) 983 { 984 return 0; 985 } 986 987 static inline void security_file_free(struct file *file) 988 { } 989 990 static inline int security_file_ioctl(struct file *file, unsigned int cmd, 991 unsigned long arg) 992 { 993 return 0; 994 } 995 996 static inline int security_mmap_file(struct file *file, unsigned long prot, 997 unsigned long flags) 998 { 999 return 0; 1000 } 1001 1002 static inline int security_mmap_addr(unsigned long addr) 1003 { 1004 return cap_mmap_addr(addr); 1005 } 1006 1007 static inline int security_file_mprotect(struct vm_area_struct *vma, 1008 unsigned long reqprot, 1009 unsigned long prot) 1010 { 1011 return 0; 1012 } 1013 1014 static inline int security_file_lock(struct file *file, unsigned int cmd) 1015 { 1016 return 0; 1017 } 1018 1019 static inline int security_file_fcntl(struct file *file, unsigned int cmd, 1020 unsigned long arg) 1021 { 1022 return 0; 1023 } 1024 1025 static inline void security_file_set_fowner(struct file *file) 1026 { 1027 return; 1028 } 1029 1030 static inline int security_file_send_sigiotask(struct task_struct *tsk, 1031 struct fown_struct *fown, 1032 int sig) 1033 { 1034 return 0; 1035 } 1036 1037 static inline int security_file_receive(struct file *file) 1038 { 1039 return 0; 1040 } 1041 1042 static inline int security_file_open(struct file *file) 1043 { 1044 return 0; 1045 } 1046 1047 static inline int security_file_truncate(struct file *file) 1048 { 1049 return 0; 1050 } 1051 1052 static inline int security_task_alloc(struct task_struct *task, 1053 unsigned long clone_flags) 1054 { 1055 return 0; 1056 } 1057 1058 static inline void security_task_free(struct task_struct *task) 1059 { } 1060 1061 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1062 { 1063 return 0; 1064 } 1065 1066 static inline void security_cred_free(struct cred *cred) 1067 { } 1068 1069 static inline int security_prepare_creds(struct cred *new, 1070 const struct cred *old, 1071 gfp_t gfp) 1072 { 1073 return 0; 1074 } 1075 1076 static inline void security_transfer_creds(struct cred *new, 1077 const struct cred *old) 1078 { 1079 } 1080 1081 static inline void security_cred_getsecid(const struct cred *c, u32 *secid) 1082 { 1083 *secid = 0; 1084 } 1085 1086 static inline int security_kernel_act_as(struct cred *cred, u32 secid) 1087 { 1088 return 0; 1089 } 1090 1091 static inline int security_kernel_create_files_as(struct cred *cred, 1092 struct inode *inode) 1093 { 1094 return 0; 1095 } 1096 1097 static inline int security_kernel_module_request(char *kmod_name) 1098 { 1099 return 0; 1100 } 1101 1102 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents) 1103 { 1104 return 0; 1105 } 1106 1107 static inline int security_kernel_post_load_data(char *buf, loff_t size, 1108 enum kernel_load_data_id id, 1109 char *description) 1110 { 1111 return 0; 1112 } 1113 1114 static inline int security_kernel_read_file(struct file *file, 1115 enum kernel_read_file_id id, 1116 bool contents) 1117 { 1118 return 0; 1119 } 1120 1121 static inline int security_kernel_post_read_file(struct file *file, 1122 char *buf, loff_t size, 1123 enum kernel_read_file_id id) 1124 { 1125 return 0; 1126 } 1127 1128 static inline int security_task_fix_setuid(struct cred *new, 1129 const struct cred *old, 1130 int flags) 1131 { 1132 return cap_task_fix_setuid(new, old, flags); 1133 } 1134 1135 static inline int security_task_fix_setgid(struct cred *new, 1136 const struct cred *old, 1137 int flags) 1138 { 1139 return 0; 1140 } 1141 1142 static inline int security_task_fix_setgroups(struct cred *new, 1143 const struct cred *old) 1144 { 1145 return 0; 1146 } 1147 1148 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid) 1149 { 1150 return 0; 1151 } 1152 1153 static inline int security_task_getpgid(struct task_struct *p) 1154 { 1155 return 0; 1156 } 1157 1158 static inline int security_task_getsid(struct task_struct *p) 1159 { 1160 return 0; 1161 } 1162 1163 static inline void security_current_getsecid_subj(u32 *secid) 1164 { 1165 *secid = 0; 1166 } 1167 1168 static inline void security_task_getsecid_obj(struct task_struct *p, u32 *secid) 1169 { 1170 *secid = 0; 1171 } 1172 1173 static inline int security_task_setnice(struct task_struct *p, int nice) 1174 { 1175 return cap_task_setnice(p, nice); 1176 } 1177 1178 static inline int security_task_setioprio(struct task_struct *p, int ioprio) 1179 { 1180 return cap_task_setioprio(p, ioprio); 1181 } 1182 1183 static inline int security_task_getioprio(struct task_struct *p) 1184 { 1185 return 0; 1186 } 1187 1188 static inline int security_task_prlimit(const struct cred *cred, 1189 const struct cred *tcred, 1190 unsigned int flags) 1191 { 1192 return 0; 1193 } 1194 1195 static inline int security_task_setrlimit(struct task_struct *p, 1196 unsigned int resource, 1197 struct rlimit *new_rlim) 1198 { 1199 return 0; 1200 } 1201 1202 static inline int security_task_setscheduler(struct task_struct *p) 1203 { 1204 return cap_task_setscheduler(p); 1205 } 1206 1207 static inline int security_task_getscheduler(struct task_struct *p) 1208 { 1209 return 0; 1210 } 1211 1212 static inline int security_task_movememory(struct task_struct *p) 1213 { 1214 return 0; 1215 } 1216 1217 static inline int security_task_kill(struct task_struct *p, 1218 struct kernel_siginfo *info, int sig, 1219 const struct cred *cred) 1220 { 1221 return 0; 1222 } 1223 1224 static inline int security_task_prctl(int option, unsigned long arg2, 1225 unsigned long arg3, 1226 unsigned long arg4, 1227 unsigned long arg5) 1228 { 1229 return cap_task_prctl(option, arg2, arg3, arg4, arg5); 1230 } 1231 1232 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode) 1233 { } 1234 1235 static inline int security_create_user_ns(const struct cred *cred) 1236 { 1237 return 0; 1238 } 1239 1240 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp, 1241 short flag) 1242 { 1243 return 0; 1244 } 1245 1246 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1247 { 1248 *secid = 0; 1249 } 1250 1251 static inline int security_msg_msg_alloc(struct msg_msg *msg) 1252 { 1253 return 0; 1254 } 1255 1256 static inline void security_msg_msg_free(struct msg_msg *msg) 1257 { } 1258 1259 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq) 1260 { 1261 return 0; 1262 } 1263 1264 static inline void security_msg_queue_free(struct kern_ipc_perm *msq) 1265 { } 1266 1267 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq, 1268 int msqflg) 1269 { 1270 return 0; 1271 } 1272 1273 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) 1274 { 1275 return 0; 1276 } 1277 1278 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, 1279 struct msg_msg *msg, int msqflg) 1280 { 1281 return 0; 1282 } 1283 1284 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, 1285 struct msg_msg *msg, 1286 struct task_struct *target, 1287 long type, int mode) 1288 { 1289 return 0; 1290 } 1291 1292 static inline int security_shm_alloc(struct kern_ipc_perm *shp) 1293 { 1294 return 0; 1295 } 1296 1297 static inline void security_shm_free(struct kern_ipc_perm *shp) 1298 { } 1299 1300 static inline int security_shm_associate(struct kern_ipc_perm *shp, 1301 int shmflg) 1302 { 1303 return 0; 1304 } 1305 1306 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) 1307 { 1308 return 0; 1309 } 1310 1311 static inline int security_shm_shmat(struct kern_ipc_perm *shp, 1312 char __user *shmaddr, int shmflg) 1313 { 1314 return 0; 1315 } 1316 1317 static inline int security_sem_alloc(struct kern_ipc_perm *sma) 1318 { 1319 return 0; 1320 } 1321 1322 static inline void security_sem_free(struct kern_ipc_perm *sma) 1323 { } 1324 1325 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg) 1326 { 1327 return 0; 1328 } 1329 1330 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) 1331 { 1332 return 0; 1333 } 1334 1335 static inline int security_sem_semop(struct kern_ipc_perm *sma, 1336 struct sembuf *sops, unsigned nsops, 1337 int alter) 1338 { 1339 return 0; 1340 } 1341 1342 static inline void security_d_instantiate(struct dentry *dentry, 1343 struct inode *inode) 1344 { } 1345 1346 static inline int security_getselfattr(unsigned int attr, 1347 struct lsm_ctx __user *ctx, 1348 size_t __user *size, u32 flags) 1349 { 1350 return -EOPNOTSUPP; 1351 } 1352 1353 static inline int security_setselfattr(unsigned int attr, 1354 struct lsm_ctx __user *ctx, 1355 size_t size, u32 flags) 1356 { 1357 return -EOPNOTSUPP; 1358 } 1359 1360 static inline int security_getprocattr(struct task_struct *p, int lsmid, 1361 const char *name, char **value) 1362 { 1363 return -EINVAL; 1364 } 1365 1366 static inline int security_setprocattr(int lsmid, char *name, void *value, 1367 size_t size) 1368 { 1369 return -EINVAL; 1370 } 1371 1372 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1373 { 1374 return 0; 1375 } 1376 1377 static inline int security_ismaclabel(const char *name) 1378 { 1379 return 0; 1380 } 1381 1382 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1383 { 1384 return -EOPNOTSUPP; 1385 } 1386 1387 static inline int security_secctx_to_secid(const char *secdata, 1388 u32 seclen, 1389 u32 *secid) 1390 { 1391 return -EOPNOTSUPP; 1392 } 1393 1394 static inline void security_release_secctx(char *secdata, u32 seclen) 1395 { 1396 } 1397 1398 static inline void security_inode_invalidate_secctx(struct inode *inode) 1399 { 1400 } 1401 1402 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1403 { 1404 return -EOPNOTSUPP; 1405 } 1406 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1407 { 1408 return -EOPNOTSUPP; 1409 } 1410 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1411 { 1412 return -EOPNOTSUPP; 1413 } 1414 static inline int security_locked_down(enum lockdown_reason what) 1415 { 1416 return 0; 1417 } 1418 #endif /* CONFIG_SECURITY */ 1419 1420 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) 1421 int security_post_notification(const struct cred *w_cred, 1422 const struct cred *cred, 1423 struct watch_notification *n); 1424 #else 1425 static inline int security_post_notification(const struct cred *w_cred, 1426 const struct cred *cred, 1427 struct watch_notification *n) 1428 { 1429 return 0; 1430 } 1431 #endif 1432 1433 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS) 1434 int security_watch_key(struct key *key); 1435 #else 1436 static inline int security_watch_key(struct key *key) 1437 { 1438 return 0; 1439 } 1440 #endif 1441 1442 #ifdef CONFIG_SECURITY_NETWORK 1443 1444 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); 1445 int security_unix_may_send(struct socket *sock, struct socket *other); 1446 int security_socket_create(int family, int type, int protocol, int kern); 1447 int security_socket_post_create(struct socket *sock, int family, 1448 int type, int protocol, int kern); 1449 int security_socket_socketpair(struct socket *socka, struct socket *sockb); 1450 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen); 1451 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen); 1452 int security_socket_listen(struct socket *sock, int backlog); 1453 int security_socket_accept(struct socket *sock, struct socket *newsock); 1454 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size); 1455 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1456 int size, int flags); 1457 int security_socket_getsockname(struct socket *sock); 1458 int security_socket_getpeername(struct socket *sock); 1459 int security_socket_getsockopt(struct socket *sock, int level, int optname); 1460 int security_socket_setsockopt(struct socket *sock, int level, int optname); 1461 int security_socket_shutdown(struct socket *sock, int how); 1462 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb); 1463 int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval, 1464 sockptr_t optlen, unsigned int len); 1465 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid); 1466 int security_sk_alloc(struct sock *sk, int family, gfp_t priority); 1467 void security_sk_free(struct sock *sk); 1468 void security_sk_clone(const struct sock *sk, struct sock *newsk); 1469 void security_sk_classify_flow(const struct sock *sk, 1470 struct flowi_common *flic); 1471 void security_req_classify_flow(const struct request_sock *req, 1472 struct flowi_common *flic); 1473 void security_sock_graft(struct sock*sk, struct socket *parent); 1474 int security_inet_conn_request(const struct sock *sk, 1475 struct sk_buff *skb, struct request_sock *req); 1476 void security_inet_csk_clone(struct sock *newsk, 1477 const struct request_sock *req); 1478 void security_inet_conn_established(struct sock *sk, 1479 struct sk_buff *skb); 1480 int security_secmark_relabel_packet(u32 secid); 1481 void security_secmark_refcount_inc(void); 1482 void security_secmark_refcount_dec(void); 1483 int security_tun_dev_alloc_security(void **security); 1484 void security_tun_dev_free_security(void *security); 1485 int security_tun_dev_create(void); 1486 int security_tun_dev_attach_queue(void *security); 1487 int security_tun_dev_attach(struct sock *sk, void *security); 1488 int security_tun_dev_open(void *security); 1489 int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb); 1490 int security_sctp_bind_connect(struct sock *sk, int optname, 1491 struct sockaddr *address, int addrlen); 1492 void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, 1493 struct sock *newsk); 1494 int security_sctp_assoc_established(struct sctp_association *asoc, 1495 struct sk_buff *skb); 1496 int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk); 1497 1498 #else /* CONFIG_SECURITY_NETWORK */ 1499 static inline int security_unix_stream_connect(struct sock *sock, 1500 struct sock *other, 1501 struct sock *newsk) 1502 { 1503 return 0; 1504 } 1505 1506 static inline int security_unix_may_send(struct socket *sock, 1507 struct socket *other) 1508 { 1509 return 0; 1510 } 1511 1512 static inline int security_socket_create(int family, int type, 1513 int protocol, int kern) 1514 { 1515 return 0; 1516 } 1517 1518 static inline int security_socket_post_create(struct socket *sock, 1519 int family, 1520 int type, 1521 int protocol, int kern) 1522 { 1523 return 0; 1524 } 1525 1526 static inline int security_socket_socketpair(struct socket *socka, 1527 struct socket *sockb) 1528 { 1529 return 0; 1530 } 1531 1532 static inline int security_socket_bind(struct socket *sock, 1533 struct sockaddr *address, 1534 int addrlen) 1535 { 1536 return 0; 1537 } 1538 1539 static inline int security_socket_connect(struct socket *sock, 1540 struct sockaddr *address, 1541 int addrlen) 1542 { 1543 return 0; 1544 } 1545 1546 static inline int security_socket_listen(struct socket *sock, int backlog) 1547 { 1548 return 0; 1549 } 1550 1551 static inline int security_socket_accept(struct socket *sock, 1552 struct socket *newsock) 1553 { 1554 return 0; 1555 } 1556 1557 static inline int security_socket_sendmsg(struct socket *sock, 1558 struct msghdr *msg, int size) 1559 { 1560 return 0; 1561 } 1562 1563 static inline int security_socket_recvmsg(struct socket *sock, 1564 struct msghdr *msg, int size, 1565 int flags) 1566 { 1567 return 0; 1568 } 1569 1570 static inline int security_socket_getsockname(struct socket *sock) 1571 { 1572 return 0; 1573 } 1574 1575 static inline int security_socket_getpeername(struct socket *sock) 1576 { 1577 return 0; 1578 } 1579 1580 static inline int security_socket_getsockopt(struct socket *sock, 1581 int level, int optname) 1582 { 1583 return 0; 1584 } 1585 1586 static inline int security_socket_setsockopt(struct socket *sock, 1587 int level, int optname) 1588 { 1589 return 0; 1590 } 1591 1592 static inline int security_socket_shutdown(struct socket *sock, int how) 1593 { 1594 return 0; 1595 } 1596 static inline int security_sock_rcv_skb(struct sock *sk, 1597 struct sk_buff *skb) 1598 { 1599 return 0; 1600 } 1601 1602 static inline int security_socket_getpeersec_stream(struct socket *sock, 1603 sockptr_t optval, 1604 sockptr_t optlen, 1605 unsigned int len) 1606 { 1607 return -ENOPROTOOPT; 1608 } 1609 1610 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1611 { 1612 return -ENOPROTOOPT; 1613 } 1614 1615 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1616 { 1617 return 0; 1618 } 1619 1620 static inline void security_sk_free(struct sock *sk) 1621 { 1622 } 1623 1624 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1625 { 1626 } 1627 1628 static inline void security_sk_classify_flow(const struct sock *sk, 1629 struct flowi_common *flic) 1630 { 1631 } 1632 1633 static inline void security_req_classify_flow(const struct request_sock *req, 1634 struct flowi_common *flic) 1635 { 1636 } 1637 1638 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1639 { 1640 } 1641 1642 static inline int security_inet_conn_request(const struct sock *sk, 1643 struct sk_buff *skb, struct request_sock *req) 1644 { 1645 return 0; 1646 } 1647 1648 static inline void security_inet_csk_clone(struct sock *newsk, 1649 const struct request_sock *req) 1650 { 1651 } 1652 1653 static inline void security_inet_conn_established(struct sock *sk, 1654 struct sk_buff *skb) 1655 { 1656 } 1657 1658 static inline int security_secmark_relabel_packet(u32 secid) 1659 { 1660 return 0; 1661 } 1662 1663 static inline void security_secmark_refcount_inc(void) 1664 { 1665 } 1666 1667 static inline void security_secmark_refcount_dec(void) 1668 { 1669 } 1670 1671 static inline int security_tun_dev_alloc_security(void **security) 1672 { 1673 return 0; 1674 } 1675 1676 static inline void security_tun_dev_free_security(void *security) 1677 { 1678 } 1679 1680 static inline int security_tun_dev_create(void) 1681 { 1682 return 0; 1683 } 1684 1685 static inline int security_tun_dev_attach_queue(void *security) 1686 { 1687 return 0; 1688 } 1689 1690 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1691 { 1692 return 0; 1693 } 1694 1695 static inline int security_tun_dev_open(void *security) 1696 { 1697 return 0; 1698 } 1699 1700 static inline int security_sctp_assoc_request(struct sctp_association *asoc, 1701 struct sk_buff *skb) 1702 { 1703 return 0; 1704 } 1705 1706 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1707 struct sockaddr *address, 1708 int addrlen) 1709 { 1710 return 0; 1711 } 1712 1713 static inline void security_sctp_sk_clone(struct sctp_association *asoc, 1714 struct sock *sk, 1715 struct sock *newsk) 1716 { 1717 } 1718 1719 static inline int security_sctp_assoc_established(struct sctp_association *asoc, 1720 struct sk_buff *skb) 1721 { 1722 return 0; 1723 } 1724 1725 static inline int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk) 1726 { 1727 return 0; 1728 } 1729 #endif /* CONFIG_SECURITY_NETWORK */ 1730 1731 #ifdef CONFIG_SECURITY_INFINIBAND 1732 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1733 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1734 int security_ib_alloc_security(void **sec); 1735 void security_ib_free_security(void *sec); 1736 #else /* CONFIG_SECURITY_INFINIBAND */ 1737 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1738 { 1739 return 0; 1740 } 1741 1742 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1743 { 1744 return 0; 1745 } 1746 1747 static inline int security_ib_alloc_security(void **sec) 1748 { 1749 return 0; 1750 } 1751 1752 static inline void security_ib_free_security(void *sec) 1753 { 1754 } 1755 #endif /* CONFIG_SECURITY_INFINIBAND */ 1756 1757 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1758 1759 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1760 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1761 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1762 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1763 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1764 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1765 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1766 struct xfrm_sec_ctx *polsec, u32 secid); 1767 int security_xfrm_state_delete(struct xfrm_state *x); 1768 void security_xfrm_state_free(struct xfrm_state *x); 1769 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); 1770 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1771 struct xfrm_policy *xp, 1772 const struct flowi_common *flic); 1773 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1774 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1775 1776 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1777 1778 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1779 struct xfrm_user_sec_ctx *sec_ctx, 1780 gfp_t gfp) 1781 { 1782 return 0; 1783 } 1784 1785 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1786 { 1787 return 0; 1788 } 1789 1790 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1791 { 1792 } 1793 1794 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1795 { 1796 return 0; 1797 } 1798 1799 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1800 struct xfrm_user_sec_ctx *sec_ctx) 1801 { 1802 return 0; 1803 } 1804 1805 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1806 struct xfrm_sec_ctx *polsec, u32 secid) 1807 { 1808 return 0; 1809 } 1810 1811 static inline void security_xfrm_state_free(struct xfrm_state *x) 1812 { 1813 } 1814 1815 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1816 { 1817 return 0; 1818 } 1819 1820 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) 1821 { 1822 return 0; 1823 } 1824 1825 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1826 struct xfrm_policy *xp, 1827 const struct flowi_common *flic) 1828 { 1829 return 1; 1830 } 1831 1832 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1833 { 1834 return 0; 1835 } 1836 1837 static inline void security_skb_classify_flow(struct sk_buff *skb, 1838 struct flowi_common *flic) 1839 { 1840 } 1841 1842 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1843 1844 #ifdef CONFIG_SECURITY_PATH 1845 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1846 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1847 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1848 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1849 unsigned int dev); 1850 int security_path_truncate(const struct path *path); 1851 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1852 const char *old_name); 1853 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1854 struct dentry *new_dentry); 1855 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1856 const struct path *new_dir, struct dentry *new_dentry, 1857 unsigned int flags); 1858 int security_path_chmod(const struct path *path, umode_t mode); 1859 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1860 int security_path_chroot(const struct path *path); 1861 #else /* CONFIG_SECURITY_PATH */ 1862 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1863 { 1864 return 0; 1865 } 1866 1867 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1868 umode_t mode) 1869 { 1870 return 0; 1871 } 1872 1873 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1874 { 1875 return 0; 1876 } 1877 1878 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1879 umode_t mode, unsigned int dev) 1880 { 1881 return 0; 1882 } 1883 1884 static inline int security_path_truncate(const struct path *path) 1885 { 1886 return 0; 1887 } 1888 1889 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1890 const char *old_name) 1891 { 1892 return 0; 1893 } 1894 1895 static inline int security_path_link(struct dentry *old_dentry, 1896 const struct path *new_dir, 1897 struct dentry *new_dentry) 1898 { 1899 return 0; 1900 } 1901 1902 static inline int security_path_rename(const struct path *old_dir, 1903 struct dentry *old_dentry, 1904 const struct path *new_dir, 1905 struct dentry *new_dentry, 1906 unsigned int flags) 1907 { 1908 return 0; 1909 } 1910 1911 static inline int security_path_chmod(const struct path *path, umode_t mode) 1912 { 1913 return 0; 1914 } 1915 1916 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1917 { 1918 return 0; 1919 } 1920 1921 static inline int security_path_chroot(const struct path *path) 1922 { 1923 return 0; 1924 } 1925 #endif /* CONFIG_SECURITY_PATH */ 1926 1927 #ifdef CONFIG_KEYS 1928 #ifdef CONFIG_SECURITY 1929 1930 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1931 void security_key_free(struct key *key); 1932 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1933 enum key_need_perm need_perm); 1934 int security_key_getsecurity(struct key *key, char **_buffer); 1935 1936 #else 1937 1938 static inline int security_key_alloc(struct key *key, 1939 const struct cred *cred, 1940 unsigned long flags) 1941 { 1942 return 0; 1943 } 1944 1945 static inline void security_key_free(struct key *key) 1946 { 1947 } 1948 1949 static inline int security_key_permission(key_ref_t key_ref, 1950 const struct cred *cred, 1951 enum key_need_perm need_perm) 1952 { 1953 return 0; 1954 } 1955 1956 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1957 { 1958 *_buffer = NULL; 1959 return 0; 1960 } 1961 1962 #endif 1963 #endif /* CONFIG_KEYS */ 1964 1965 #ifdef CONFIG_AUDIT 1966 #ifdef CONFIG_SECURITY 1967 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1968 int security_audit_rule_known(struct audit_krule *krule); 1969 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1970 void security_audit_rule_free(void *lsmrule); 1971 1972 #else 1973 1974 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1975 void **lsmrule) 1976 { 1977 return 0; 1978 } 1979 1980 static inline int security_audit_rule_known(struct audit_krule *krule) 1981 { 1982 return 0; 1983 } 1984 1985 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1986 void *lsmrule) 1987 { 1988 return 0; 1989 } 1990 1991 static inline void security_audit_rule_free(void *lsmrule) 1992 { } 1993 1994 #endif /* CONFIG_SECURITY */ 1995 #endif /* CONFIG_AUDIT */ 1996 1997 #ifdef CONFIG_SECURITYFS 1998 1999 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 2000 struct dentry *parent, void *data, 2001 const struct file_operations *fops); 2002 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 2003 struct dentry *securityfs_create_symlink(const char *name, 2004 struct dentry *parent, 2005 const char *target, 2006 const struct inode_operations *iops); 2007 extern void securityfs_remove(struct dentry *dentry); 2008 2009 #else /* CONFIG_SECURITYFS */ 2010 2011 static inline struct dentry *securityfs_create_dir(const char *name, 2012 struct dentry *parent) 2013 { 2014 return ERR_PTR(-ENODEV); 2015 } 2016 2017 static inline struct dentry *securityfs_create_file(const char *name, 2018 umode_t mode, 2019 struct dentry *parent, 2020 void *data, 2021 const struct file_operations *fops) 2022 { 2023 return ERR_PTR(-ENODEV); 2024 } 2025 2026 static inline struct dentry *securityfs_create_symlink(const char *name, 2027 struct dentry *parent, 2028 const char *target, 2029 const struct inode_operations *iops) 2030 { 2031 return ERR_PTR(-ENODEV); 2032 } 2033 2034 static inline void securityfs_remove(struct dentry *dentry) 2035 {} 2036 2037 #endif 2038 2039 #ifdef CONFIG_BPF_SYSCALL 2040 union bpf_attr; 2041 struct bpf_map; 2042 struct bpf_prog; 2043 struct bpf_prog_aux; 2044 #ifdef CONFIG_SECURITY 2045 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 2046 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 2047 extern int security_bpf_prog(struct bpf_prog *prog); 2048 extern int security_bpf_map_alloc(struct bpf_map *map); 2049 extern void security_bpf_map_free(struct bpf_map *map); 2050 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 2051 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 2052 #else 2053 static inline int security_bpf(int cmd, union bpf_attr *attr, 2054 unsigned int size) 2055 { 2056 return 0; 2057 } 2058 2059 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 2060 { 2061 return 0; 2062 } 2063 2064 static inline int security_bpf_prog(struct bpf_prog *prog) 2065 { 2066 return 0; 2067 } 2068 2069 static inline int security_bpf_map_alloc(struct bpf_map *map) 2070 { 2071 return 0; 2072 } 2073 2074 static inline void security_bpf_map_free(struct bpf_map *map) 2075 { } 2076 2077 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 2078 { 2079 return 0; 2080 } 2081 2082 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 2083 { } 2084 #endif /* CONFIG_SECURITY */ 2085 #endif /* CONFIG_BPF_SYSCALL */ 2086 2087 #ifdef CONFIG_PERF_EVENTS 2088 struct perf_event_attr; 2089 struct perf_event; 2090 2091 #ifdef CONFIG_SECURITY 2092 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 2093 extern int security_perf_event_alloc(struct perf_event *event); 2094 extern void security_perf_event_free(struct perf_event *event); 2095 extern int security_perf_event_read(struct perf_event *event); 2096 extern int security_perf_event_write(struct perf_event *event); 2097 #else 2098 static inline int security_perf_event_open(struct perf_event_attr *attr, 2099 int type) 2100 { 2101 return 0; 2102 } 2103 2104 static inline int security_perf_event_alloc(struct perf_event *event) 2105 { 2106 return 0; 2107 } 2108 2109 static inline void security_perf_event_free(struct perf_event *event) 2110 { 2111 } 2112 2113 static inline int security_perf_event_read(struct perf_event *event) 2114 { 2115 return 0; 2116 } 2117 2118 static inline int security_perf_event_write(struct perf_event *event) 2119 { 2120 return 0; 2121 } 2122 #endif /* CONFIG_SECURITY */ 2123 #endif /* CONFIG_PERF_EVENTS */ 2124 2125 #ifdef CONFIG_IO_URING 2126 #ifdef CONFIG_SECURITY 2127 extern int security_uring_override_creds(const struct cred *new); 2128 extern int security_uring_sqpoll(void); 2129 extern int security_uring_cmd(struct io_uring_cmd *ioucmd); 2130 #else 2131 static inline int security_uring_override_creds(const struct cred *new) 2132 { 2133 return 0; 2134 } 2135 static inline int security_uring_sqpoll(void) 2136 { 2137 return 0; 2138 } 2139 static inline int security_uring_cmd(struct io_uring_cmd *ioucmd) 2140 { 2141 return 0; 2142 } 2143 #endif /* CONFIG_SECURITY */ 2144 #endif /* CONFIG_IO_URING */ 2145 2146 #endif /* ! __LINUX_SECURITY_H */ 2147