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 1434 #else /* CONFIG_SECURITY_NETWORK */ 1435 static inline int security_unix_stream_connect(struct sock *sock, 1436 struct sock *other, 1437 struct sock *newsk) 1438 { 1439 return 0; 1440 } 1441 1442 static inline int security_unix_may_send(struct socket *sock, 1443 struct socket *other) 1444 { 1445 return 0; 1446 } 1447 1448 static inline int security_socket_create(int family, int type, 1449 int protocol, int kern) 1450 { 1451 return 0; 1452 } 1453 1454 static inline int security_socket_post_create(struct socket *sock, 1455 int family, 1456 int type, 1457 int protocol, int kern) 1458 { 1459 return 0; 1460 } 1461 1462 static inline int security_socket_socketpair(struct socket *socka, 1463 struct socket *sockb) 1464 { 1465 return 0; 1466 } 1467 1468 static inline int security_socket_bind(struct socket *sock, 1469 struct sockaddr *address, 1470 int addrlen) 1471 { 1472 return 0; 1473 } 1474 1475 static inline int security_socket_connect(struct socket *sock, 1476 struct sockaddr *address, 1477 int addrlen) 1478 { 1479 return 0; 1480 } 1481 1482 static inline int security_socket_listen(struct socket *sock, int backlog) 1483 { 1484 return 0; 1485 } 1486 1487 static inline int security_socket_accept(struct socket *sock, 1488 struct socket *newsock) 1489 { 1490 return 0; 1491 } 1492 1493 static inline int security_socket_sendmsg(struct socket *sock, 1494 struct msghdr *msg, int size) 1495 { 1496 return 0; 1497 } 1498 1499 static inline int security_socket_recvmsg(struct socket *sock, 1500 struct msghdr *msg, int size, 1501 int flags) 1502 { 1503 return 0; 1504 } 1505 1506 static inline int security_socket_getsockname(struct socket *sock) 1507 { 1508 return 0; 1509 } 1510 1511 static inline int security_socket_getpeername(struct socket *sock) 1512 { 1513 return 0; 1514 } 1515 1516 static inline int security_socket_getsockopt(struct socket *sock, 1517 int level, int optname) 1518 { 1519 return 0; 1520 } 1521 1522 static inline int security_socket_setsockopt(struct socket *sock, 1523 int level, int optname) 1524 { 1525 return 0; 1526 } 1527 1528 static inline int security_socket_shutdown(struct socket *sock, int how) 1529 { 1530 return 0; 1531 } 1532 static inline int security_sock_rcv_skb(struct sock *sk, 1533 struct sk_buff *skb) 1534 { 1535 return 0; 1536 } 1537 1538 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1539 int __user *optlen, unsigned len) 1540 { 1541 return -ENOPROTOOPT; 1542 } 1543 1544 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1545 { 1546 return -ENOPROTOOPT; 1547 } 1548 1549 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1550 { 1551 return 0; 1552 } 1553 1554 static inline void security_sk_free(struct sock *sk) 1555 { 1556 } 1557 1558 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk) 1559 { 1560 } 1561 1562 static inline void security_sk_classify_flow(struct sock *sk, 1563 struct flowi_common *flic) 1564 { 1565 } 1566 1567 static inline void security_req_classify_flow(const struct request_sock *req, 1568 struct flowi_common *flic) 1569 { 1570 } 1571 1572 static inline void security_sock_graft(struct sock *sk, struct socket *parent) 1573 { 1574 } 1575 1576 static inline int security_inet_conn_request(const struct sock *sk, 1577 struct sk_buff *skb, struct request_sock *req) 1578 { 1579 return 0; 1580 } 1581 1582 static inline void security_inet_csk_clone(struct sock *newsk, 1583 const struct request_sock *req) 1584 { 1585 } 1586 1587 static inline void security_inet_conn_established(struct sock *sk, 1588 struct sk_buff *skb) 1589 { 1590 } 1591 1592 static inline int security_secmark_relabel_packet(u32 secid) 1593 { 1594 return 0; 1595 } 1596 1597 static inline void security_secmark_refcount_inc(void) 1598 { 1599 } 1600 1601 static inline void security_secmark_refcount_dec(void) 1602 { 1603 } 1604 1605 static inline int security_tun_dev_alloc_security(void **security) 1606 { 1607 return 0; 1608 } 1609 1610 static inline void security_tun_dev_free_security(void *security) 1611 { 1612 } 1613 1614 static inline int security_tun_dev_create(void) 1615 { 1616 return 0; 1617 } 1618 1619 static inline int security_tun_dev_attach_queue(void *security) 1620 { 1621 return 0; 1622 } 1623 1624 static inline int security_tun_dev_attach(struct sock *sk, void *security) 1625 { 1626 return 0; 1627 } 1628 1629 static inline int security_tun_dev_open(void *security) 1630 { 1631 return 0; 1632 } 1633 1634 static inline int security_sctp_assoc_request(struct sctp_association *asoc, 1635 struct sk_buff *skb) 1636 { 1637 return 0; 1638 } 1639 1640 static inline int security_sctp_bind_connect(struct sock *sk, int optname, 1641 struct sockaddr *address, 1642 int addrlen) 1643 { 1644 return 0; 1645 } 1646 1647 static inline void security_sctp_sk_clone(struct sctp_association *asoc, 1648 struct sock *sk, 1649 struct sock *newsk) 1650 { 1651 } 1652 #endif /* CONFIG_SECURITY_NETWORK */ 1653 1654 #ifdef CONFIG_SECURITY_INFINIBAND 1655 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); 1656 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); 1657 int security_ib_alloc_security(void **sec); 1658 void security_ib_free_security(void *sec); 1659 #else /* CONFIG_SECURITY_INFINIBAND */ 1660 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) 1661 { 1662 return 0; 1663 } 1664 1665 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) 1666 { 1667 return 0; 1668 } 1669 1670 static inline int security_ib_alloc_security(void **sec) 1671 { 1672 return 0; 1673 } 1674 1675 static inline void security_ib_free_security(void *sec) 1676 { 1677 } 1678 #endif /* CONFIG_SECURITY_INFINIBAND */ 1679 1680 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1681 1682 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1683 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp); 1684 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp); 1685 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 1686 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 1687 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 1688 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1689 struct xfrm_sec_ctx *polsec, u32 secid); 1690 int security_xfrm_state_delete(struct xfrm_state *x); 1691 void security_xfrm_state_free(struct xfrm_state *x); 1692 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid); 1693 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1694 struct xfrm_policy *xp, 1695 const struct flowi_common *flic); 1696 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid); 1697 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic); 1698 1699 #else /* CONFIG_SECURITY_NETWORK_XFRM */ 1700 1701 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1702 struct xfrm_user_sec_ctx *sec_ctx, 1703 gfp_t gfp) 1704 { 1705 return 0; 1706 } 1707 1708 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp) 1709 { 1710 return 0; 1711 } 1712 1713 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1714 { 1715 } 1716 1717 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1718 { 1719 return 0; 1720 } 1721 1722 static inline int security_xfrm_state_alloc(struct xfrm_state *x, 1723 struct xfrm_user_sec_ctx *sec_ctx) 1724 { 1725 return 0; 1726 } 1727 1728 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1729 struct xfrm_sec_ctx *polsec, u32 secid) 1730 { 1731 return 0; 1732 } 1733 1734 static inline void security_xfrm_state_free(struct xfrm_state *x) 1735 { 1736 } 1737 1738 static inline int security_xfrm_state_delete(struct xfrm_state *x) 1739 { 1740 return 0; 1741 } 1742 1743 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) 1744 { 1745 return 0; 1746 } 1747 1748 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1749 struct xfrm_policy *xp, 1750 const struct flowi_common *flic) 1751 { 1752 return 1; 1753 } 1754 1755 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1756 { 1757 return 0; 1758 } 1759 1760 static inline void security_skb_classify_flow(struct sk_buff *skb, 1761 struct flowi_common *flic) 1762 { 1763 } 1764 1765 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1766 1767 #ifdef CONFIG_SECURITY_PATH 1768 int security_path_unlink(const struct path *dir, struct dentry *dentry); 1769 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode); 1770 int security_path_rmdir(const struct path *dir, struct dentry *dentry); 1771 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, 1772 unsigned int dev); 1773 int security_path_truncate(const struct path *path); 1774 int security_path_symlink(const struct path *dir, struct dentry *dentry, 1775 const char *old_name); 1776 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, 1777 struct dentry *new_dentry); 1778 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, 1779 const struct path *new_dir, struct dentry *new_dentry, 1780 unsigned int flags); 1781 int security_path_chmod(const struct path *path, umode_t mode); 1782 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid); 1783 int security_path_chroot(const struct path *path); 1784 #else /* CONFIG_SECURITY_PATH */ 1785 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry) 1786 { 1787 return 0; 1788 } 1789 1790 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry, 1791 umode_t mode) 1792 { 1793 return 0; 1794 } 1795 1796 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry) 1797 { 1798 return 0; 1799 } 1800 1801 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry, 1802 umode_t mode, unsigned int dev) 1803 { 1804 return 0; 1805 } 1806 1807 static inline int security_path_truncate(const struct path *path) 1808 { 1809 return 0; 1810 } 1811 1812 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry, 1813 const char *old_name) 1814 { 1815 return 0; 1816 } 1817 1818 static inline int security_path_link(struct dentry *old_dentry, 1819 const struct path *new_dir, 1820 struct dentry *new_dentry) 1821 { 1822 return 0; 1823 } 1824 1825 static inline int security_path_rename(const struct path *old_dir, 1826 struct dentry *old_dentry, 1827 const struct path *new_dir, 1828 struct dentry *new_dentry, 1829 unsigned int flags) 1830 { 1831 return 0; 1832 } 1833 1834 static inline int security_path_chmod(const struct path *path, umode_t mode) 1835 { 1836 return 0; 1837 } 1838 1839 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) 1840 { 1841 return 0; 1842 } 1843 1844 static inline int security_path_chroot(const struct path *path) 1845 { 1846 return 0; 1847 } 1848 #endif /* CONFIG_SECURITY_PATH */ 1849 1850 #ifdef CONFIG_KEYS 1851 #ifdef CONFIG_SECURITY 1852 1853 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags); 1854 void security_key_free(struct key *key); 1855 int security_key_permission(key_ref_t key_ref, const struct cred *cred, 1856 enum key_need_perm need_perm); 1857 int security_key_getsecurity(struct key *key, char **_buffer); 1858 1859 #else 1860 1861 static inline int security_key_alloc(struct key *key, 1862 const struct cred *cred, 1863 unsigned long flags) 1864 { 1865 return 0; 1866 } 1867 1868 static inline void security_key_free(struct key *key) 1869 { 1870 } 1871 1872 static inline int security_key_permission(key_ref_t key_ref, 1873 const struct cred *cred, 1874 enum key_need_perm need_perm) 1875 { 1876 return 0; 1877 } 1878 1879 static inline int security_key_getsecurity(struct key *key, char **_buffer) 1880 { 1881 *_buffer = NULL; 1882 return 0; 1883 } 1884 1885 #endif 1886 #endif /* CONFIG_KEYS */ 1887 1888 #ifdef CONFIG_AUDIT 1889 #ifdef CONFIG_SECURITY 1890 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule); 1891 int security_audit_rule_known(struct audit_krule *krule); 1892 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule); 1893 void security_audit_rule_free(void *lsmrule); 1894 1895 #else 1896 1897 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr, 1898 void **lsmrule) 1899 { 1900 return 0; 1901 } 1902 1903 static inline int security_audit_rule_known(struct audit_krule *krule) 1904 { 1905 return 0; 1906 } 1907 1908 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op, 1909 void *lsmrule) 1910 { 1911 return 0; 1912 } 1913 1914 static inline void security_audit_rule_free(void *lsmrule) 1915 { } 1916 1917 #endif /* CONFIG_SECURITY */ 1918 #endif /* CONFIG_AUDIT */ 1919 1920 #ifdef CONFIG_SECURITYFS 1921 1922 extern struct dentry *securityfs_create_file(const char *name, umode_t mode, 1923 struct dentry *parent, void *data, 1924 const struct file_operations *fops); 1925 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); 1926 struct dentry *securityfs_create_symlink(const char *name, 1927 struct dentry *parent, 1928 const char *target, 1929 const struct inode_operations *iops); 1930 extern void securityfs_remove(struct dentry *dentry); 1931 1932 #else /* CONFIG_SECURITYFS */ 1933 1934 static inline struct dentry *securityfs_create_dir(const char *name, 1935 struct dentry *parent) 1936 { 1937 return ERR_PTR(-ENODEV); 1938 } 1939 1940 static inline struct dentry *securityfs_create_file(const char *name, 1941 umode_t mode, 1942 struct dentry *parent, 1943 void *data, 1944 const struct file_operations *fops) 1945 { 1946 return ERR_PTR(-ENODEV); 1947 } 1948 1949 static inline struct dentry *securityfs_create_symlink(const char *name, 1950 struct dentry *parent, 1951 const char *target, 1952 const struct inode_operations *iops) 1953 { 1954 return ERR_PTR(-ENODEV); 1955 } 1956 1957 static inline void securityfs_remove(struct dentry *dentry) 1958 {} 1959 1960 #endif 1961 1962 #ifdef CONFIG_BPF_SYSCALL 1963 union bpf_attr; 1964 struct bpf_map; 1965 struct bpf_prog; 1966 struct bpf_prog_aux; 1967 #ifdef CONFIG_SECURITY 1968 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size); 1969 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode); 1970 extern int security_bpf_prog(struct bpf_prog *prog); 1971 extern int security_bpf_map_alloc(struct bpf_map *map); 1972 extern void security_bpf_map_free(struct bpf_map *map); 1973 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux); 1974 extern void security_bpf_prog_free(struct bpf_prog_aux *aux); 1975 #else 1976 static inline int security_bpf(int cmd, union bpf_attr *attr, 1977 unsigned int size) 1978 { 1979 return 0; 1980 } 1981 1982 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode) 1983 { 1984 return 0; 1985 } 1986 1987 static inline int security_bpf_prog(struct bpf_prog *prog) 1988 { 1989 return 0; 1990 } 1991 1992 static inline int security_bpf_map_alloc(struct bpf_map *map) 1993 { 1994 return 0; 1995 } 1996 1997 static inline void security_bpf_map_free(struct bpf_map *map) 1998 { } 1999 2000 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux) 2001 { 2002 return 0; 2003 } 2004 2005 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux) 2006 { } 2007 #endif /* CONFIG_SECURITY */ 2008 #endif /* CONFIG_BPF_SYSCALL */ 2009 2010 #ifdef CONFIG_PERF_EVENTS 2011 struct perf_event_attr; 2012 struct perf_event; 2013 2014 #ifdef CONFIG_SECURITY 2015 extern int security_perf_event_open(struct perf_event_attr *attr, int type); 2016 extern int security_perf_event_alloc(struct perf_event *event); 2017 extern void security_perf_event_free(struct perf_event *event); 2018 extern int security_perf_event_read(struct perf_event *event); 2019 extern int security_perf_event_write(struct perf_event *event); 2020 #else 2021 static inline int security_perf_event_open(struct perf_event_attr *attr, 2022 int type) 2023 { 2024 return 0; 2025 } 2026 2027 static inline int security_perf_event_alloc(struct perf_event *event) 2028 { 2029 return 0; 2030 } 2031 2032 static inline void security_perf_event_free(struct perf_event *event) 2033 { 2034 } 2035 2036 static inline int security_perf_event_read(struct perf_event *event) 2037 { 2038 return 0; 2039 } 2040 2041 static inline int security_perf_event_write(struct perf_event *event) 2042 { 2043 return 0; 2044 } 2045 #endif /* CONFIG_SECURITY */ 2046 #endif /* CONFIG_PERF_EVENTS */ 2047 2048 #ifdef CONFIG_IO_URING 2049 #ifdef CONFIG_SECURITY 2050 extern int security_uring_override_creds(const struct cred *new); 2051 extern int security_uring_sqpoll(void); 2052 #else 2053 static inline int security_uring_override_creds(const struct cred *new) 2054 { 2055 return 0; 2056 } 2057 static inline int security_uring_sqpoll(void) 2058 { 2059 return 0; 2060 } 2061 #endif /* CONFIG_SECURITY */ 2062 #endif /* CONFIG_IO_URING */ 2063 2064 #endif /* ! __LINUX_SECURITY_H */ 2065