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