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