include/linux/security.h

0001 /*
0002  * Linux Security plug
0003  *
0004  * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
0005  * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
0006  * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
0007  * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
0008  * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
0009  * Copyright (C) 2016 Mellanox Techonologies
0010  *
0011  *  This program is free software; you can redistribute it and/or modify
0012  *  it under the terms of the GNU General Public License as published by
0013  *  the Free Software Foundation; either version 2 of the License, or
0014  *  (at your option) any later version.
0015  *
0016  *  Due to this file being licensed under the GPL there is controversy over
0017  *  whether this permits you to write a module that #includes this file
0018  *  without placing your module under the GPL.  Please consult a lawyer for
0019  *  advice before doing this.
0020  *
0021  */
0022
0023 #ifndef __LINUX_SECURITY_H
0024 #define __LINUX_SECURITY_H
0025
0026 #include <linux/kernel_read_file.h>
0027 #include <linux/key.h>
0028 #include <linux/capability.h>
0029 #include <linux/fs.h>
0030 #include <linux/slab.h>
0031 #include <linux/err.h>
0032 #include <linux/string.h>
0033 #include <linux/mm.h>
0034
0035 struct linux_binprm;
0036 struct cred;
0037 struct rlimit;
0038 struct kernel_siginfo;
0039 struct sembuf;
0040 struct kern_ipc_perm;
0041 struct audit_context;
0042 struct super_block;
0043 struct inode;
0044 struct dentry;
0045 struct file;
0046 struct vfsmount;
0047 struct path;
0048 struct qstr;
0049 struct iattr;
0050 struct fown_struct;
0051 struct file_operations;
0052 struct msg_msg;
0053 struct xattr;
0054 struct kernfs_node;
0055 struct xfrm_sec_ctx;
0056 struct mm_struct;
0057 struct fs_context;
0058 struct fs_parameter;
0059 enum fs_value_type;
0060 struct watch;
0061 struct watch_notification;
0062
0063 /* Default (no) options for the capable function */
0064 #define CAP_OPT_NONE 0x0
0065 /* If capable should audit the security request */
0066 #define CAP_OPT_NOAUDIT BIT(1)
0067 /* If capable is being called by a setid function */
0068 #define CAP_OPT_INSETID BIT(2)
0069
0070 /* LSM Agnostic defines for fs_context::lsm_flags */
0071 #define SECURITY_LSM_NATIVE_LABELS  1
0072
0073 struct ctl_table;
0074 struct audit_krule;
0075 struct user_namespace;
0076 struct timezone;
0077
0078 enum lsm_event {
0079     LSM_POLICY_CHANGE,
0080 };
0081
0082 /*
0083  * These are reasons that can be passed to the security_locked_down()
0084  * LSM hook. Lockdown reasons that protect kernel integrity (ie, the
0085  * ability for userland to modify kernel code) are placed before
0086  * LOCKDOWN_INTEGRITY_MAX.  Lockdown reasons that protect kernel
0087  * confidentiality (ie, the ability for userland to extract
0088  * information from the running kernel that would otherwise be
0089  * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX.
0090  *
0091  * LSM authors should note that the semantics of any given lockdown
0092  * reason are not guaranteed to be stable - the same reason may block
0093  * one set of features in one kernel release, and a slightly different
0094  * set of features in a later kernel release. LSMs that seek to expose
0095  * lockdown policy at any level of granularity other than "none",
0096  * "integrity" or "confidentiality" are responsible for either
0097  * ensuring that they expose a consistent level of functionality to
0098  * userland, or ensuring that userland is aware that this is
0099  * potentially a moving target. It is easy to misuse this information
0100  * in a way that could break userspace. Please be careful not to do
0101  * so.
0102  *
0103  * If you add to this, remember to extend lockdown_reasons in
0104  * security/lockdown/lockdown.c.
0105  */
0106 enum lockdown_reason {
0107     LOCKDOWN_NONE,
0108     LOCKDOWN_MODULE_SIGNATURE,
0109     LOCKDOWN_DEV_MEM,
0110     LOCKDOWN_EFI_TEST,
0111     LOCKDOWN_KEXEC,
0112     LOCKDOWN_HIBERNATION,
0113     LOCKDOWN_PCI_ACCESS,
0114     LOCKDOWN_IOPORT,
0115     LOCKDOWN_MSR,
0116     LOCKDOWN_ACPI_TABLES,
0117     LOCKDOWN_PCMCIA_CIS,
0118     LOCKDOWN_TIOCSSERIAL,
0119     LOCKDOWN_MODULE_PARAMETERS,
0120     LOCKDOWN_MMIOTRACE,
0121     LOCKDOWN_DEBUGFS,
0122     LOCKDOWN_XMON_WR,
0123     LOCKDOWN_BPF_WRITE_USER,
0124     LOCKDOWN_DBG_WRITE_KERNEL,
0125     LOCKDOWN_INTEGRITY_MAX,
0126     LOCKDOWN_KCORE,
0127     LOCKDOWN_KPROBES,
0128     LOCKDOWN_BPF_READ_KERNEL,
0129     LOCKDOWN_DBG_READ_KERNEL,
0130     LOCKDOWN_PERF,
0131     LOCKDOWN_TRACEFS,
0132     LOCKDOWN_XMON_RW,
0133     LOCKDOWN_XFRM_SECRET,
0134     LOCKDOWN_CONFIDENTIALITY_MAX,
0135 };
0136
0137 extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1];
0138
0139 /* These functions are in security/commoncap.c */
0140 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
0141                int cap, unsigned int opts);
0142 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
0143 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
0144 extern int cap_ptrace_traceme(struct task_struct *parent);
0145 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
0146 extern int cap_capset(struct cred *new, const struct cred *old,
0147               const kernel_cap_t *effective,
0148               const kernel_cap_t *inheritable,
0149               const kernel_cap_t *permitted);
0150 extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file);
0151 int cap_inode_setxattr(struct dentry *dentry, const char *name,
0152                const void *value, size_t size, int flags);
0153 int cap_inode_removexattr(struct user_namespace *mnt_userns,
0154               struct dentry *dentry, const char *name);
0155 int cap_inode_need_killpriv(struct dentry *dentry);
0156 int cap_inode_killpriv(struct user_namespace *mnt_userns,
0157                struct dentry *dentry);
0158 int cap_inode_getsecurity(struct user_namespace *mnt_userns,
0159               struct inode *inode, const char *name, void **buffer,
0160               bool alloc);
0161 extern int cap_mmap_addr(unsigned long addr);
0162 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
0163              unsigned long prot, unsigned long flags);
0164 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
0165 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
0166               unsigned long arg4, unsigned long arg5);
0167 extern int cap_task_setscheduler(struct task_struct *p);
0168 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
0169 extern int cap_task_setnice(struct task_struct *p, int nice);
0170 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
0171
0172 struct msghdr;
0173 struct sk_buff;
0174 struct sock;
0175 struct sockaddr;
0176 struct socket;
0177 struct flowi_common;
0178 struct dst_entry;
0179 struct xfrm_selector;
0180 struct xfrm_policy;
0181 struct xfrm_state;
0182 struct xfrm_user_sec_ctx;
0183 struct seq_file;
0184 struct sctp_association;
0185
0186 #ifdef CONFIG_MMU
0187 extern unsigned long mmap_min_addr;
0188 extern unsigned long dac_mmap_min_addr;
0189 #else
0190 #define mmap_min_addr       0UL
0191 #define dac_mmap_min_addr   0UL
0192 #endif
0193
0194 /*
0195  * Values used in the task_security_ops calls
0196  */
0197 /* setuid or setgid, id0 == uid or gid */
0198 #define LSM_SETID_ID    1
0199
0200 /* setreuid or setregid, id0 == real, id1 == eff */
0201 #define LSM_SETID_RE    2
0202
0203 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
0204 #define LSM_SETID_RES   4
0205
0206 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
0207 #define LSM_SETID_FS    8
0208
0209 /* Flags for security_task_prlimit(). */
0210 #define LSM_PRLIMIT_READ  1
0211 #define LSM_PRLIMIT_WRITE 2
0212
0213 /* forward declares to avoid warnings */
0214 struct sched_param;
0215 struct request_sock;
0216
0217 /* bprm->unsafe reasons */
0218 #define LSM_UNSAFE_SHARE    1
0219 #define LSM_UNSAFE_PTRACE   2
0220 #define LSM_UNSAFE_NO_NEW_PRIVS 4
0221
0222 #ifdef CONFIG_MMU
0223 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
0224                  void *buffer, size_t *lenp, loff_t *ppos);
0225 #endif
0226
0227 /* security_inode_init_security callback function to write xattrs */
0228 typedef int (*initxattrs) (struct inode *inode,
0229                const struct xattr *xattr_array, void *fs_data);
0230
0231
0232 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
0233 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
0234 #define __data_id_stringify(dummy, str) #str,
0235
0236 enum kernel_load_data_id {
0237     __kernel_read_file_id(__data_id_enumify)
0238 };
0239
0240 static const char * const kernel_load_data_str[] = {
0241     __kernel_read_file_id(__data_id_stringify)
0242 };
0243
0244 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
0245 {
0246     if ((unsigned)id >= LOADING_MAX_ID)
0247         return kernel_load_data_str[LOADING_UNKNOWN];
0248
0249     return kernel_load_data_str[id];
0250 }
0251
0252 #ifdef CONFIG_SECURITY
0253
0254 int call_blocking_lsm_notifier(enum lsm_event event, void *data);
0255 int register_blocking_lsm_notifier(struct notifier_block *nb);
0256 int unregister_blocking_lsm_notifier(struct notifier_block *nb);
0257
0258 /* prototypes */
0259 extern int security_init(void);
0260 extern int early_security_init(void);
0261
0262 /* Security operations */
0263 int security_binder_set_context_mgr(const struct cred *mgr);
0264 int security_binder_transaction(const struct cred *from,
0265                 const struct cred *to);
0266 int security_binder_transfer_binder(const struct cred *from,
0267                     const struct cred *to);
0268 int security_binder_transfer_file(const struct cred *from,
0269                   const struct cred *to, struct file *file);
0270 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
0271 int security_ptrace_traceme(struct task_struct *parent);
0272 int security_capget(struct task_struct *target,
0273             kernel_cap_t *effective,
0274             kernel_cap_t *inheritable,
0275             kernel_cap_t *permitted);
0276 int security_capset(struct cred *new, const struct cred *old,
0277             const kernel_cap_t *effective,
0278             const kernel_cap_t *inheritable,
0279             const kernel_cap_t *permitted);
0280 int security_capable(const struct cred *cred,
0281                struct user_namespace *ns,
0282                int cap,
0283                unsigned int opts);
0284 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
0285 int security_quota_on(struct dentry *dentry);
0286 int security_syslog(int type);
0287 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
0288 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
0289 int security_bprm_creds_for_exec(struct linux_binprm *bprm);
0290 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file);
0291 int security_bprm_check(struct linux_binprm *bprm);
0292 void security_bprm_committing_creds(struct linux_binprm *bprm);
0293 void security_bprm_committed_creds(struct linux_binprm *bprm);
0294 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc);
0295 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param);
0296 int security_sb_alloc(struct super_block *sb);
0297 void security_sb_delete(struct super_block *sb);
0298 void security_sb_free(struct super_block *sb);
0299 void security_free_mnt_opts(void **mnt_opts);
0300 int security_sb_eat_lsm_opts(char *options, void **mnt_opts);
0301 int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts);
0302 int security_sb_remount(struct super_block *sb, void *mnt_opts);
0303 int security_sb_kern_mount(struct super_block *sb);
0304 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
0305 int security_sb_statfs(struct dentry *dentry);
0306 int security_sb_mount(const char *dev_name, const struct path *path,
0307               const char *type, unsigned long flags, void *data);
0308 int security_sb_umount(struct vfsmount *mnt, int flags);
0309 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
0310 int security_sb_set_mnt_opts(struct super_block *sb,
0311                 void *mnt_opts,
0312                 unsigned long kern_flags,
0313                 unsigned long *set_kern_flags);
0314 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
0315                 struct super_block *newsb,
0316                 unsigned long kern_flags,
0317                 unsigned long *set_kern_flags);
0318 int security_move_mount(const struct path *from_path, const struct path *to_path);
0319 int security_dentry_init_security(struct dentry *dentry, int mode,
0320                   const struct qstr *name,
0321                   const char **xattr_name, void **ctx,
0322                   u32 *ctxlen);
0323 int security_dentry_create_files_as(struct dentry *dentry, int mode,
0324                     struct qstr *name,
0325                     const struct cred *old,
0326                     struct cred *new);
0327 int security_path_notify(const struct path *path, u64 mask,
0328                     unsigned int obj_type);
0329 int security_inode_alloc(struct inode *inode);
0330 void security_inode_free(struct inode *inode);
0331 int security_inode_init_security(struct inode *inode, struct inode *dir,
0332                  const struct qstr *qstr,
0333                  initxattrs initxattrs, void *fs_data);
0334 int security_inode_init_security_anon(struct inode *inode,
0335                       const struct qstr *name,
0336                       const struct inode *context_inode);
0337 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
0338                      const struct qstr *qstr, const char **name,
0339                      void **value, size_t *len);
0340 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
0341 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
0342              struct dentry *new_dentry);
0343 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
0344 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
0345                const char *old_name);
0346 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
0347 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
0348 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
0349 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
0350               struct inode *new_dir, struct dentry *new_dentry,
0351               unsigned int flags);
0352 int security_inode_readlink(struct dentry *dentry);
0353 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
0354                    bool rcu);
0355 int security_inode_permission(struct inode *inode, int mask);
0356 int security_inode_setattr(struct user_namespace *mnt_userns,
0357                struct dentry *dentry, struct iattr *attr);
0358 int security_inode_getattr(const struct path *path);
0359 int security_inode_setxattr(struct user_namespace *mnt_userns,
0360                 struct dentry *dentry, const char *name,
0361                 const void *value, size_t size, int flags);
0362 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
0363                   const void *value, size_t size, int flags);
0364 int security_inode_getxattr(struct dentry *dentry, const char *name);
0365 int security_inode_listxattr(struct dentry *dentry);
0366 int security_inode_removexattr(struct user_namespace *mnt_userns,
0367                    struct dentry *dentry, const char *name);
0368 int security_inode_need_killpriv(struct dentry *dentry);
0369 int security_inode_killpriv(struct user_namespace *mnt_userns,
0370                 struct dentry *dentry);
0371 int security_inode_getsecurity(struct user_namespace *mnt_userns,
0372                    struct inode *inode, const char *name,
0373                    void **buffer, bool alloc);
0374 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
0375 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
0376 void security_inode_getsecid(struct inode *inode, u32 *secid);
0377 int security_inode_copy_up(struct dentry *src, struct cred **new);
0378 int security_inode_copy_up_xattr(const char *name);
0379 int security_kernfs_init_security(struct kernfs_node *kn_dir,
0380                   struct kernfs_node *kn);
0381 int security_file_permission(struct file *file, int mask);
0382 int security_file_alloc(struct file *file);
0383 void security_file_free(struct file *file);
0384 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
0385 int security_mmap_file(struct file *file, unsigned long prot,
0386             unsigned long flags);
0387 int security_mmap_addr(unsigned long addr);
0388 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
0389                unsigned long prot);
0390 int security_file_lock(struct file *file, unsigned int cmd);
0391 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
0392 void security_file_set_fowner(struct file *file);
0393 int security_file_send_sigiotask(struct task_struct *tsk,
0394                  struct fown_struct *fown, int sig);
0395 int security_file_receive(struct file *file);
0396 int security_file_open(struct file *file);
0397 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
0398 void security_task_free(struct task_struct *task);
0399 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
0400 void security_cred_free(struct cred *cred);
0401 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
0402 void security_transfer_creds(struct cred *new, const struct cred *old);
0403 void security_cred_getsecid(const struct cred *c, u32 *secid);
0404 int security_kernel_act_as(struct cred *new, u32 secid);
0405 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
0406 int security_kernel_module_request(char *kmod_name);
0407 int security_kernel_load_data(enum kernel_load_data_id id, bool contents);
0408 int security_kernel_post_load_data(char *buf, loff_t size,
0409                    enum kernel_load_data_id id,
0410                    char *description);
0411 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id,
0412                   bool contents);
0413 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
0414                    enum kernel_read_file_id id);
0415 int security_task_fix_setuid(struct cred *new, const struct cred *old,
0416                  int flags);
0417 int security_task_fix_setgid(struct cred *new, const struct cred *old,
0418                  int flags);
0419 int security_task_fix_setgroups(struct cred *new, const struct cred *old);
0420 int security_task_setpgid(struct task_struct *p, pid_t pgid);
0421 int security_task_getpgid(struct task_struct *p);
0422 int security_task_getsid(struct task_struct *p);
0423 void security_current_getsecid_subj(u32 *secid);
0424 void security_task_getsecid_obj(struct task_struct *p, u32 *secid);
0425 int security_task_setnice(struct task_struct *p, int nice);
0426 int security_task_setioprio(struct task_struct *p, int ioprio);
0427 int security_task_getioprio(struct task_struct *p);
0428 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
0429               unsigned int flags);
0430 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
0431         struct rlimit *new_rlim);
0432 int security_task_setscheduler(struct task_struct *p);
0433 int security_task_getscheduler(struct task_struct *p);
0434 int security_task_movememory(struct task_struct *p);
0435 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
0436             int sig, const struct cred *cred);
0437 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
0438             unsigned long arg4, unsigned long arg5);
0439 void security_task_to_inode(struct task_struct *p, struct inode *inode);
0440 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
0441 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
0442 int security_msg_msg_alloc(struct msg_msg *msg);
0443 void security_msg_msg_free(struct msg_msg *msg);
0444 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
0445 void security_msg_queue_free(struct kern_ipc_perm *msq);
0446 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
0447 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
0448 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
0449                   struct msg_msg *msg, int msqflg);
0450 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
0451                   struct task_struct *target, long type, int mode);
0452 int security_shm_alloc(struct kern_ipc_perm *shp);
0453 void security_shm_free(struct kern_ipc_perm *shp);
0454 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
0455 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
0456 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
0457 int security_sem_alloc(struct kern_ipc_perm *sma);
0458 void security_sem_free(struct kern_ipc_perm *sma);
0459 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
0460 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
0461 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
0462             unsigned nsops, int alter);
0463 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
0464 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
0465              char **value);
0466 int security_setprocattr(const char *lsm, const char *name, void *value,
0467              size_t size);
0468 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
0469 int security_ismaclabel(const char *name);
0470 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
0471 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
0472 void security_release_secctx(char *secdata, u32 seclen);
0473 void security_inode_invalidate_secctx(struct inode *inode);
0474 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
0475 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
0476 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
0477 int security_locked_down(enum lockdown_reason what);
0478 #else /* CONFIG_SECURITY */
0479
0480 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data)
0481 {
0482     return 0;
0483 }
0484
0485 static inline int register_blocking_lsm_notifier(struct notifier_block *nb)
0486 {
0487     return 0;
0488 }
0489
0490 static inline  int unregister_blocking_lsm_notifier(struct notifier_block *nb)
0491 {
0492     return 0;
0493 }
0494
0495 static inline void security_free_mnt_opts(void **mnt_opts)
0496 {
0497 }
0498
0499 /*
0500  * This is the default capabilities functionality.  Most of these functions
0501  * are just stubbed out, but a few must call the proper capable code.
0502  */
0503
0504 static inline int security_init(void)
0505 {
0506     return 0;
0507 }
0508
0509 static inline int early_security_init(void)
0510 {
0511     return 0;
0512 }
0513
0514 static inline int security_binder_set_context_mgr(const struct cred *mgr)
0515 {
0516     return 0;
0517 }
0518
0519 static inline int security_binder_transaction(const struct cred *from,
0520                           const struct cred *to)
0521 {
0522     return 0;
0523 }
0524
0525 static inline int security_binder_transfer_binder(const struct cred *from,
0526                           const struct cred *to)
0527 {
0528     return 0;
0529 }
0530
0531 static inline int security_binder_transfer_file(const struct cred *from,
0532                         const struct cred *to,
0533                         struct file *file)
0534 {
0535     return 0;
0536 }
0537
0538 static inline int security_ptrace_access_check(struct task_struct *child,
0539                          unsigned int mode)
0540 {
0541     return cap_ptrace_access_check(child, mode);
0542 }
0543
0544 static inline int security_ptrace_traceme(struct task_struct *parent)
0545 {
0546     return cap_ptrace_traceme(parent);
0547 }
0548
0549 static inline int security_capget(struct task_struct *target,
0550                    kernel_cap_t *effective,
0551                    kernel_cap_t *inheritable,
0552                    kernel_cap_t *permitted)
0553 {
0554     return cap_capget(target, effective, inheritable, permitted);
0555 }
0556
0557 static inline int security_capset(struct cred *new,
0558                    const struct cred *old,
0559                    const kernel_cap_t *effective,
0560                    const kernel_cap_t *inheritable,
0561                    const kernel_cap_t *permitted)
0562 {
0563     return cap_capset(new, old, effective, inheritable, permitted);
0564 }
0565
0566 static inline int security_capable(const struct cred *cred,
0567                    struct user_namespace *ns,
0568                    int cap,
0569                    unsigned int opts)
0570 {
0571     return cap_capable(cred, ns, cap, opts);
0572 }
0573
0574 static inline int security_quotactl(int cmds, int type, int id,
0575                      struct super_block *sb)
0576 {
0577     return 0;
0578 }
0579
0580 static inline int security_quota_on(struct dentry *dentry)
0581 {
0582     return 0;
0583 }
0584
0585 static inline int security_syslog(int type)
0586 {
0587     return 0;
0588 }
0589
0590 static inline int security_settime64(const struct timespec64 *ts,
0591                      const struct timezone *tz)
0592 {
0593     return cap_settime(ts, tz);
0594 }
0595
0596 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
0597 {
0598     return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
0599 }
0600
0601 static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm)
0602 {
0603     return 0;
0604 }
0605
0606 static inline int security_bprm_creds_from_file(struct linux_binprm *bprm,
0607                         struct file *file)
0608 {
0609     return cap_bprm_creds_from_file(bprm, file);
0610 }
0611
0612 static inline int security_bprm_check(struct linux_binprm *bprm)
0613 {
0614     return 0;
0615 }
0616
0617 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
0618 {
0619 }
0620
0621 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
0622 {
0623 }
0624
0625 static inline int security_fs_context_dup(struct fs_context *fc,
0626                       struct fs_context *src_fc)
0627 {
0628     return 0;
0629 }
0630 static inline int security_fs_context_parse_param(struct fs_context *fc,
0631                           struct fs_parameter *param)
0632 {
0633     return -ENOPARAM;
0634 }
0635
0636 static inline int security_sb_alloc(struct super_block *sb)
0637 {
0638     return 0;
0639 }
0640
0641 static inline void security_sb_delete(struct super_block *sb)
0642 { }
0643
0644 static inline void security_sb_free(struct super_block *sb)
0645 { }
0646
0647 static inline int security_sb_eat_lsm_opts(char *options,
0648                        void **mnt_opts)
0649 {
0650     return 0;
0651 }
0652
0653 static inline int security_sb_remount(struct super_block *sb,
0654                       void *mnt_opts)
0655 {
0656     return 0;
0657 }
0658
0659 static inline int security_sb_mnt_opts_compat(struct super_block *sb,
0660                           void *mnt_opts)
0661 {
0662     return 0;
0663 }
0664
0665
0666 static inline int security_sb_kern_mount(struct super_block *sb)
0667 {
0668     return 0;
0669 }
0670
0671 static inline int security_sb_show_options(struct seq_file *m,
0672                        struct super_block *sb)
0673 {
0674     return 0;
0675 }
0676
0677 static inline int security_sb_statfs(struct dentry *dentry)
0678 {
0679     return 0;
0680 }
0681
0682 static inline int security_sb_mount(const char *dev_name, const struct path *path,
0683                     const char *type, unsigned long flags,
0684                     void *data)
0685 {
0686     return 0;
0687 }
0688
0689 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
0690 {
0691     return 0;
0692 }
0693
0694 static inline int security_sb_pivotroot(const struct path *old_path,
0695                     const struct path *new_path)
0696 {
0697     return 0;
0698 }
0699
0700 static inline int security_sb_set_mnt_opts(struct super_block *sb,
0701                        void *mnt_opts,
0702                        unsigned long kern_flags,
0703                        unsigned long *set_kern_flags)
0704 {
0705     return 0;
0706 }
0707
0708 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
0709                           struct super_block *newsb,
0710                           unsigned long kern_flags,
0711                           unsigned long *set_kern_flags)
0712 {
0713     return 0;
0714 }
0715
0716 static inline int security_move_mount(const struct path *from_path,
0717                       const struct path *to_path)
0718 {
0719     return 0;
0720 }
0721
0722 static inline int security_path_notify(const struct path *path, u64 mask,
0723                 unsigned int obj_type)
0724 {
0725     return 0;
0726 }
0727
0728 static inline int security_inode_alloc(struct inode *inode)
0729 {
0730     return 0;
0731 }
0732
0733 static inline void security_inode_free(struct inode *inode)
0734 { }
0735
0736 static inline int security_dentry_init_security(struct dentry *dentry,
0737                          int mode,
0738                          const struct qstr *name,
0739                          const char **xattr_name,
0740                          void **ctx,
0741                          u32 *ctxlen)
0742 {
0743     return -EOPNOTSUPP;
0744 }
0745
0746 static inline int security_dentry_create_files_as(struct dentry *dentry,
0747                           int mode, struct qstr *name,
0748                           const struct cred *old,
0749                           struct cred *new)
0750 {
0751     return 0;
0752 }
0753
0754
0755 static inline int security_inode_init_security(struct inode *inode,
0756                         struct inode *dir,
0757                         const struct qstr *qstr,
0758                         const initxattrs xattrs,
0759                         void *fs_data)
0760 {
0761     return 0;
0762 }
0763
0764 static inline int security_inode_init_security_anon(struct inode *inode,
0765                             const struct qstr *name,
0766                             const struct inode *context_inode)
0767 {
0768     return 0;
0769 }
0770
0771 static inline int security_old_inode_init_security(struct inode *inode,
0772                            struct inode *dir,
0773                            const struct qstr *qstr,
0774                            const char **name,
0775                            void **value, size_t *len)
0776 {
0777     return -EOPNOTSUPP;
0778 }
0779
0780 static inline int security_inode_create(struct inode *dir,
0781                      struct dentry *dentry,
0782                      umode_t mode)
0783 {
0784     return 0;
0785 }
0786
0787 static inline int security_inode_link(struct dentry *old_dentry,
0788                        struct inode *dir,
0789                        struct dentry *new_dentry)
0790 {
0791     return 0;
0792 }
0793
0794 static inline int security_inode_unlink(struct inode *dir,
0795                      struct dentry *dentry)
0796 {
0797     return 0;
0798 }
0799
0800 static inline int security_inode_symlink(struct inode *dir,
0801                       struct dentry *dentry,
0802                       const char *old_name)
0803 {
0804     return 0;
0805 }
0806
0807 static inline int security_inode_mkdir(struct inode *dir,
0808                     struct dentry *dentry,
0809                     int mode)
0810 {
0811     return 0;
0812 }
0813
0814 static inline int security_inode_rmdir(struct inode *dir,
0815                     struct dentry *dentry)
0816 {
0817     return 0;
0818 }
0819
0820 static inline int security_inode_mknod(struct inode *dir,
0821                     struct dentry *dentry,
0822                     int mode, dev_t dev)
0823 {
0824     return 0;
0825 }
0826
0827 static inline int security_inode_rename(struct inode *old_dir,
0828                      struct dentry *old_dentry,
0829                      struct inode *new_dir,
0830                      struct dentry *new_dentry,
0831                      unsigned int flags)
0832 {
0833     return 0;
0834 }
0835
0836 static inline int security_inode_readlink(struct dentry *dentry)
0837 {
0838     return 0;
0839 }
0840
0841 static inline int security_inode_follow_link(struct dentry *dentry,
0842                          struct inode *inode,
0843                          bool rcu)
0844 {
0845     return 0;
0846 }
0847
0848 static inline int security_inode_permission(struct inode *inode, int mask)
0849 {
0850     return 0;
0851 }
0852
0853 static inline int security_inode_setattr(struct user_namespace *mnt_userns,
0854                      struct dentry *dentry,
0855                      struct iattr *attr)
0856 {
0857     return 0;
0858 }
0859
0860 static inline int security_inode_getattr(const struct path *path)
0861 {
0862     return 0;
0863 }
0864
0865 static inline int security_inode_setxattr(struct user_namespace *mnt_userns,
0866         struct dentry *dentry, const char *name, const void *value,
0867         size_t size, int flags)
0868 {
0869     return cap_inode_setxattr(dentry, name, value, size, flags);
0870 }
0871
0872 static inline void security_inode_post_setxattr(struct dentry *dentry,
0873         const char *name, const void *value, size_t size, int flags)
0874 { }
0875
0876 static inline int security_inode_getxattr(struct dentry *dentry,
0877             const char *name)
0878 {
0879     return 0;
0880 }
0881
0882 static inline int security_inode_listxattr(struct dentry *dentry)
0883 {
0884     return 0;
0885 }
0886
0887 static inline int security_inode_removexattr(struct user_namespace *mnt_userns,
0888                          struct dentry *dentry,
0889                          const char *name)
0890 {
0891     return cap_inode_removexattr(mnt_userns, dentry, name);
0892 }
0893
0894 static inline int security_inode_need_killpriv(struct dentry *dentry)
0895 {
0896     return cap_inode_need_killpriv(dentry);
0897 }
0898
0899 static inline int security_inode_killpriv(struct user_namespace *mnt_userns,
0900                       struct dentry *dentry)
0901 {
0902     return cap_inode_killpriv(mnt_userns, dentry);
0903 }
0904
0905 static inline int security_inode_getsecurity(struct user_namespace *mnt_userns,
0906                          struct inode *inode,
0907                          const char *name, void **buffer,
0908                          bool alloc)
0909 {
0910     return cap_inode_getsecurity(mnt_userns, inode, name, buffer, alloc);
0911 }
0912
0913 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
0914 {
0915     return -EOPNOTSUPP;
0916 }
0917
0918 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
0919 {
0920     return 0;
0921 }
0922
0923 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
0924 {
0925     *secid = 0;
0926 }
0927
0928 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
0929 {
0930     return 0;
0931 }
0932
0933 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir,
0934                         struct kernfs_node *kn)
0935 {
0936     return 0;
0937 }
0938
0939 static inline int security_inode_copy_up_xattr(const char *name)
0940 {
0941     return -EOPNOTSUPP;
0942 }
0943
0944 static inline int security_file_permission(struct file *file, int mask)
0945 {
0946     return 0;
0947 }
0948
0949 static inline int security_file_alloc(struct file *file)
0950 {
0951     return 0;
0952 }
0953
0954 static inline void security_file_free(struct file *file)
0955 { }
0956
0957 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
0958                       unsigned long arg)
0959 {
0960     return 0;
0961 }
0962
0963 static inline int security_mmap_file(struct file *file, unsigned long prot,
0964                      unsigned long flags)
0965 {
0966     return 0;
0967 }
0968
0969 static inline int security_mmap_addr(unsigned long addr)
0970 {
0971     return cap_mmap_addr(addr);
0972 }
0973
0974 static inline int security_file_mprotect(struct vm_area_struct *vma,
0975                      unsigned long reqprot,
0976                      unsigned long prot)
0977 {
0978     return 0;
0979 }
0980
0981 static inline int security_file_lock(struct file *file, unsigned int cmd)
0982 {
0983     return 0;
0984 }
0985
0986 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
0987                       unsigned long arg)
0988 {
0989     return 0;
0990 }
0991
0992 static inline void security_file_set_fowner(struct file *file)
0993 {
0994     return;
0995 }
0996
0997 static inline int security_file_send_sigiotask(struct task_struct *tsk,
0998                            struct fown_struct *fown,
0999                            int sig)
1000 {
1001     return 0;
1002 }
1003
1004 static inline int security_file_receive(struct file *file)
1005 {
1006     return 0;
1007 }
1008
1009 static inline int security_file_open(struct file *file)
1010 {
1011     return 0;
1012 }
1013
1014 static inline int security_task_alloc(struct task_struct *task,
1015                       unsigned long clone_flags)
1016 {
1017     return 0;
1018 }
1019
1020 static inline void security_task_free(struct task_struct *task)
1021 { }
1022
1023 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1024 {
1025     return 0;
1026 }
1027
1028 static inline void security_cred_free(struct cred *cred)
1029 { }
1030
1031 static inline int security_prepare_creds(struct cred *new,
1032                      const struct cred *old,
1033                      gfp_t gfp)
1034 {
1035     return 0;
1036 }
1037
1038 static inline void security_transfer_creds(struct cred *new,
1039                        const struct cred *old)
1040 {
1041 }
1042
1043 static inline void security_cred_getsecid(const struct cred *c, u32 *secid)
1044 {
1045     *secid = 0;
1046 }
1047
1048 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
1049 {
1050     return 0;
1051 }
1052
1053 static inline int security_kernel_create_files_as(struct cred *cred,
1054                           struct inode *inode)
1055 {
1056     return 0;
1057 }
1058
1059 static inline int security_kernel_module_request(char *kmod_name)
1060 {
1061     return 0;
1062 }
1063
1064 static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents)
1065 {
1066     return 0;
1067 }
1068
1069 static inline int security_kernel_post_load_data(char *buf, loff_t size,
1070                          enum kernel_load_data_id id,
1071                          char *description)
1072 {
1073     return 0;
1074 }
1075
1076 static inline int security_kernel_read_file(struct file *file,
1077                         enum kernel_read_file_id id,
1078                         bool contents)
1079 {
1080     return 0;
1081 }
1082
1083 static inline int security_kernel_post_read_file(struct file *file,
1084                          char *buf, loff_t size,
1085                          enum kernel_read_file_id id)
1086 {
1087     return 0;
1088 }
1089
1090 static inline int security_task_fix_setuid(struct cred *new,
1091                        const struct cred *old,
1092                        int flags)
1093 {
1094     return cap_task_fix_setuid(new, old, flags);
1095 }
1096
1097 static inline int security_task_fix_setgid(struct cred *new,
1098                        const struct cred *old,
1099                        int flags)
1100 {
1101     return 0;
1102 }
1103
1104 static inline int security_task_fix_setgroups(struct cred *new,
1105                        const struct cred *old)
1106 {
1107     return 0;
1108 }
1109
1110 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
1111 {
1112     return 0;
1113 }
1114
1115 static inline int security_task_getpgid(struct task_struct *p)
1116 {
1117     return 0;
1118 }
1119
1120 static inline int security_task_getsid(struct task_struct *p)
1121 {
1122     return 0;
1123 }
1124
1125 static inline void security_current_getsecid_subj(u32 *secid)
1126 {
1127     *secid = 0;
1128 }
1129
1130 static inline void security_task_getsecid_obj(struct task_struct *p, u32 *secid)
1131 {
1132     *secid = 0;
1133 }
1134
1135 static inline int security_task_setnice(struct task_struct *p, int nice)
1136 {
1137     return cap_task_setnice(p, nice);
1138 }
1139
1140 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
1141 {
1142     return cap_task_setioprio(p, ioprio);
1143 }
1144
1145 static inline int security_task_getioprio(struct task_struct *p)
1146 {
1147     return 0;
1148 }
1149
1150 static inline int security_task_prlimit(const struct cred *cred,
1151                     const struct cred *tcred,
1152                     unsigned int flags)
1153 {
1154     return 0;
1155 }
1156
1157 static inline int security_task_setrlimit(struct task_struct *p,
1158                       unsigned int resource,
1159                       struct rlimit *new_rlim)
1160 {
1161     return 0;
1162 }
1163
1164 static inline int security_task_setscheduler(struct task_struct *p)
1165 {
1166     return cap_task_setscheduler(p);
1167 }
1168
1169 static inline int security_task_getscheduler(struct task_struct *p)
1170 {
1171     return 0;
1172 }
1173
1174 static inline int security_task_movememory(struct task_struct *p)
1175 {
1176     return 0;
1177 }
1178
1179 static inline int security_task_kill(struct task_struct *p,
1180                      struct kernel_siginfo *info, int sig,
1181                      const struct cred *cred)
1182 {
1183     return 0;
1184 }
1185
1186 static inline int security_task_prctl(int option, unsigned long arg2,
1187                       unsigned long arg3,
1188                       unsigned long arg4,
1189                       unsigned long arg5)
1190 {
1191     return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1192 }
1193
1194 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1195 { }
1196
1197 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1198                       short flag)
1199 {
1200     return 0;
1201 }
1202
1203 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1204 {
1205     *secid = 0;
1206 }
1207
1208 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1209 {
1210     return 0;
1211 }
1212
1213 static inline void security_msg_msg_free(struct msg_msg *msg)
1214 { }
1215
1216 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1217 {
1218     return 0;
1219 }
1220
1221 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1222 { }
1223
1224 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1225                            int msqflg)
1226 {
1227     return 0;
1228 }
1229
1230 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1231 {
1232     return 0;
1233 }
1234
1235 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1236                         struct msg_msg *msg, int msqflg)
1237 {
1238     return 0;
1239 }
1240
1241 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1242                         struct msg_msg *msg,
1243                         struct task_struct *target,
1244                         long type, int mode)
1245 {
1246     return 0;
1247 }
1248
1249 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1250 {
1251     return 0;
1252 }
1253
1254 static inline void security_shm_free(struct kern_ipc_perm *shp)
1255 { }
1256
1257 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1258                      int shmflg)
1259 {
1260     return 0;
1261 }
1262
1263 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1264 {
1265     return 0;
1266 }
1267
1268 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1269                      char __user *shmaddr, int shmflg)
1270 {
1271     return 0;
1272 }
1273
1274 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1275 {
1276     return 0;
1277 }
1278
1279 static inline void security_sem_free(struct kern_ipc_perm *sma)
1280 { }
1281
1282 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1283 {
1284     return 0;
1285 }
1286
1287 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1288 {
1289     return 0;
1290 }
1291
1292 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1293                      struct sembuf *sops, unsigned nsops,
1294                      int alter)
1295 {
1296     return 0;
1297 }
1298
1299 static inline void security_d_instantiate(struct dentry *dentry,
1300                       struct inode *inode)
1301 { }
1302
1303 static inline int security_getprocattr(struct task_struct *p, const char *lsm,
1304                        char *name, char **value)
1305 {
1306     return -EINVAL;
1307 }
1308
1309 static inline int security_setprocattr(const char *lsm, char *name,
1310                        void *value, size_t size)
1311 {
1312     return -EINVAL;
1313 }
1314
1315 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1316 {
1317     return 0;
1318 }
1319
1320 static inline int security_ismaclabel(const char *name)
1321 {
1322     return 0;
1323 }
1324
1325 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1326 {
1327     return -EOPNOTSUPP;
1328 }
1329
1330 static inline int security_secctx_to_secid(const char *secdata,
1331                        u32 seclen,
1332                        u32 *secid)
1333 {
1334     return -EOPNOTSUPP;
1335 }
1336
1337 static inline void security_release_secctx(char *secdata, u32 seclen)
1338 {
1339 }
1340
1341 static inline void security_inode_invalidate_secctx(struct inode *inode)
1342 {
1343 }
1344
1345 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1346 {
1347     return -EOPNOTSUPP;
1348 }
1349 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1350 {
1351     return -EOPNOTSUPP;
1352 }
1353 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1354 {
1355     return -EOPNOTSUPP;
1356 }
1357 static inline int security_locked_down(enum lockdown_reason what)
1358 {
1359     return 0;
1360 }
1361 #endif  /* CONFIG_SECURITY */
1362
1363 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE)
1364 int security_post_notification(const struct cred *w_cred,
1365                    const struct cred *cred,
1366                    struct watch_notification *n);
1367 #else
1368 static inline int security_post_notification(const struct cred *w_cred,
1369                          const struct cred *cred,
1370                          struct watch_notification *n)
1371 {
1372     return 0;
1373 }
1374 #endif
1375
1376 #if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS)
1377 int security_watch_key(struct key *key);
1378 #else
1379 static inline int security_watch_key(struct key *key)
1380 {
1381     return 0;
1382 }
1383 #endif
1384
1385 #ifdef CONFIG_SECURITY_NETWORK
1386
1387 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1388 int security_unix_may_send(struct socket *sock,  struct socket *other);
1389 int security_socket_create(int family, int type, int protocol, int kern);
1390 int security_socket_post_create(struct socket *sock, int family,
1391                 int type, int protocol, int kern);
1392 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1393 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1394 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1395 int security_socket_listen(struct socket *sock, int backlog);
1396 int security_socket_accept(struct socket *sock, struct socket *newsock);
1397 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1398 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1399                 int size, int flags);
1400 int security_socket_getsockname(struct socket *sock);
1401 int security_socket_getpeername(struct socket *sock);
1402 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1403 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1404 int security_socket_shutdown(struct socket *sock, int how);
1405 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1406 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1407                       int __user *optlen, unsigned len);
1408 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1409 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1410 void security_sk_free(struct sock *sk);
1411 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1412 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic);
1413 void security_req_classify_flow(const struct request_sock *req,
1414                 struct flowi_common *flic);
1415 void security_sock_graft(struct sock*sk, struct socket *parent);
1416 int security_inet_conn_request(const struct sock *sk,
1417             struct sk_buff *skb, struct request_sock *req);
1418 void security_inet_csk_clone(struct sock *newsk,
1419             const struct request_sock *req);
1420 void security_inet_conn_established(struct sock *sk,
1421             struct sk_buff *skb);
1422 int security_secmark_relabel_packet(u32 secid);
1423 void security_secmark_refcount_inc(void);
1424 void security_secmark_refcount_dec(void);
1425 int security_tun_dev_alloc_security(void **security);
1426 void security_tun_dev_free_security(void *security);
1427 int security_tun_dev_create(void);
1428 int security_tun_dev_attach_queue(void *security);
1429 int security_tun_dev_attach(struct sock *sk, void *security);
1430 int security_tun_dev_open(void *security);
1431 int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb);
1432 int security_sctp_bind_connect(struct sock *sk, int optname,
1433                    struct sockaddr *address, int addrlen);
1434 void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk,
1435                 struct sock *newsk);
1436 int security_sctp_assoc_established(struct sctp_association *asoc,
1437                     struct sk_buff *skb);
1438
1439 #else   /* CONFIG_SECURITY_NETWORK */
1440 static inline int security_unix_stream_connect(struct sock *sock,
1441                            struct sock *other,
1442                            struct sock *newsk)
1443 {
1444     return 0;
1445 }
1446
1447 static inline int security_unix_may_send(struct socket *sock,
1448                      struct socket *other)
1449 {
1450     return 0;
1451 }
1452
1453 static inline int security_socket_create(int family, int type,
1454                      int protocol, int kern)
1455 {
1456     return 0;
1457 }
1458
1459 static inline int security_socket_post_create(struct socket *sock,
1460                           int family,
1461                           int type,
1462                           int protocol, int kern)
1463 {
1464     return 0;
1465 }
1466
1467 static inline int security_socket_socketpair(struct socket *socka,
1468                          struct socket *sockb)
1469 {
1470     return 0;
1471 }
1472
1473 static inline int security_socket_bind(struct socket *sock,
1474                        struct sockaddr *address,
1475                        int addrlen)
1476 {
1477     return 0;
1478 }
1479
1480 static inline int security_socket_connect(struct socket *sock,
1481                       struct sockaddr *address,
1482                       int addrlen)
1483 {
1484     return 0;
1485 }
1486
1487 static inline int security_socket_listen(struct socket *sock, int backlog)
1488 {
1489     return 0;
1490 }
1491
1492 static inline int security_socket_accept(struct socket *sock,
1493                      struct socket *newsock)
1494 {
1495     return 0;
1496 }
1497
1498 static inline int security_socket_sendmsg(struct socket *sock,
1499                       struct msghdr *msg, int size)
1500 {
1501     return 0;
1502 }
1503
1504 static inline int security_socket_recvmsg(struct socket *sock,
1505                       struct msghdr *msg, int size,
1506                       int flags)
1507 {
1508     return 0;
1509 }
1510
1511 static inline int security_socket_getsockname(struct socket *sock)
1512 {
1513     return 0;
1514 }
1515
1516 static inline int security_socket_getpeername(struct socket *sock)
1517 {
1518     return 0;
1519 }
1520
1521 static inline int security_socket_getsockopt(struct socket *sock,
1522                          int level, int optname)
1523 {
1524     return 0;
1525 }
1526
1527 static inline int security_socket_setsockopt(struct socket *sock,
1528                          int level, int optname)
1529 {
1530     return 0;
1531 }
1532
1533 static inline int security_socket_shutdown(struct socket *sock, int how)
1534 {
1535     return 0;
1536 }
1537 static inline int security_sock_rcv_skb(struct sock *sk,
1538                     struct sk_buff *skb)
1539 {
1540     return 0;
1541 }
1542
1543 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1544                             int __user *optlen, unsigned len)
1545 {
1546     return -ENOPROTOOPT;
1547 }
1548
1549 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1550 {
1551     return -ENOPROTOOPT;
1552 }
1553
1554 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1555 {
1556     return 0;
1557 }
1558
1559 static inline void security_sk_free(struct sock *sk)
1560 {
1561 }
1562
1563 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1564 {
1565 }
1566
1567 static inline void security_sk_classify_flow(struct sock *sk,
1568                          struct flowi_common *flic)
1569 {
1570 }
1571
1572 static inline void security_req_classify_flow(const struct request_sock *req,
1573                           struct flowi_common *flic)
1574 {
1575 }
1576
1577 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1578 {
1579 }
1580
1581 static inline int security_inet_conn_request(const struct sock *sk,
1582             struct sk_buff *skb, struct request_sock *req)
1583 {
1584     return 0;
1585 }
1586
1587 static inline void security_inet_csk_clone(struct sock *newsk,
1588             const struct request_sock *req)
1589 {
1590 }
1591
1592 static inline void security_inet_conn_established(struct sock *sk,
1593             struct sk_buff *skb)
1594 {
1595 }
1596
1597 static inline int security_secmark_relabel_packet(u32 secid)
1598 {
1599     return 0;
1600 }
1601
1602 static inline void security_secmark_refcount_inc(void)
1603 {
1604 }
1605
1606 static inline void security_secmark_refcount_dec(void)
1607 {
1608 }
1609
1610 static inline int security_tun_dev_alloc_security(void **security)
1611 {
1612     return 0;
1613 }
1614
1615 static inline void security_tun_dev_free_security(void *security)
1616 {
1617 }
1618
1619 static inline int security_tun_dev_create(void)
1620 {
1621     return 0;
1622 }
1623
1624 static inline int security_tun_dev_attach_queue(void *security)
1625 {
1626     return 0;
1627 }
1628
1629 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1630 {
1631     return 0;
1632 }
1633
1634 static inline int security_tun_dev_open(void *security)
1635 {
1636     return 0;
1637 }
1638
1639 static inline int security_sctp_assoc_request(struct sctp_association *asoc,
1640                           struct sk_buff *skb)
1641 {
1642     return 0;
1643 }
1644
1645 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1646                          struct sockaddr *address,
1647                          int addrlen)
1648 {
1649     return 0;
1650 }
1651
1652 static inline void security_sctp_sk_clone(struct sctp_association *asoc,
1653                       struct sock *sk,
1654                       struct sock *newsk)
1655 {
1656 }
1657
1658 static inline int security_sctp_assoc_established(struct sctp_association *asoc,
1659                           struct sk_buff *skb)
1660 {
1661     return 0;
1662 }
1663 #endif  /* CONFIG_SECURITY_NETWORK */
1664
1665 #ifdef CONFIG_SECURITY_INFINIBAND
1666 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1667 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1668 int security_ib_alloc_security(void **sec);
1669 void security_ib_free_security(void *sec);
1670 #else   /* CONFIG_SECURITY_INFINIBAND */
1671 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1672 {
1673     return 0;
1674 }
1675
1676 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1677 {
1678     return 0;
1679 }
1680
1681 static inline int security_ib_alloc_security(void **sec)
1682 {
1683     return 0;
1684 }
1685
1686 static inline void security_ib_free_security(void *sec)
1687 {
1688 }
1689 #endif  /* CONFIG_SECURITY_INFINIBAND */
1690
1691 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1692
1693 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1694                    struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1695 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1696 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1697 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1698 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1699 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1700                       struct xfrm_sec_ctx *polsec, u32 secid);
1701 int security_xfrm_state_delete(struct xfrm_state *x);
1702 void security_xfrm_state_free(struct xfrm_state *x);
1703 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid);
1704 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1705                        struct xfrm_policy *xp,
1706                        const struct flowi_common *flic);
1707 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1708 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic);
1709
1710 #else   /* CONFIG_SECURITY_NETWORK_XFRM */
1711
1712 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1713                          struct xfrm_user_sec_ctx *sec_ctx,
1714                          gfp_t gfp)
1715 {
1716     return 0;
1717 }
1718
1719 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1720 {
1721     return 0;
1722 }
1723
1724 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1725 {
1726 }
1727
1728 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1729 {
1730     return 0;
1731 }
1732
1733 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1734                     struct xfrm_user_sec_ctx *sec_ctx)
1735 {
1736     return 0;
1737 }
1738
1739 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1740                     struct xfrm_sec_ctx *polsec, u32 secid)
1741 {
1742     return 0;
1743 }
1744
1745 static inline void security_xfrm_state_free(struct xfrm_state *x)
1746 {
1747 }
1748
1749 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1750 {
1751     return 0;
1752 }
1753
1754 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid)
1755 {
1756     return 0;
1757 }
1758
1759 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1760                              struct xfrm_policy *xp,
1761                              const struct flowi_common *flic)
1762 {
1763     return 1;
1764 }
1765
1766 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1767 {
1768     return 0;
1769 }
1770
1771 static inline void security_skb_classify_flow(struct sk_buff *skb,
1772                           struct flowi_common *flic)
1773 {
1774 }
1775
1776 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1777
1778 #ifdef CONFIG_SECURITY_PATH
1779 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1780 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1781 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1782 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1783             unsigned int dev);
1784 int security_path_truncate(const struct path *path);
1785 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1786               const char *old_name);
1787 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1788                struct dentry *new_dentry);
1789 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1790              const struct path *new_dir, struct dentry *new_dentry,
1791              unsigned int flags);
1792 int security_path_chmod(const struct path *path, umode_t mode);
1793 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1794 int security_path_chroot(const struct path *path);
1795 #else   /* CONFIG_SECURITY_PATH */
1796 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1797 {
1798     return 0;
1799 }
1800
1801 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1802                       umode_t mode)
1803 {
1804     return 0;
1805 }
1806
1807 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1808 {
1809     return 0;
1810 }
1811
1812 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1813                       umode_t mode, unsigned int dev)
1814 {
1815     return 0;
1816 }
1817
1818 static inline int security_path_truncate(const struct path *path)
1819 {
1820     return 0;
1821 }
1822
1823 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1824                     const char *old_name)
1825 {
1826     return 0;
1827 }
1828
1829 static inline int security_path_link(struct dentry *old_dentry,
1830                      const struct path *new_dir,
1831                      struct dentry *new_dentry)
1832 {
1833     return 0;
1834 }
1835
1836 static inline int security_path_rename(const struct path *old_dir,
1837                        struct dentry *old_dentry,
1838                        const struct path *new_dir,
1839                        struct dentry *new_dentry,
1840                        unsigned int flags)
1841 {
1842     return 0;
1843 }
1844
1845 static inline int security_path_chmod(const struct path *path, umode_t mode)
1846 {
1847     return 0;
1848 }
1849
1850 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1851 {
1852     return 0;
1853 }
1854
1855 static inline int security_path_chroot(const struct path *path)
1856 {
1857     return 0;
1858 }
1859 #endif  /* CONFIG_SECURITY_PATH */
1860
1861 #ifdef CONFIG_KEYS
1862 #ifdef CONFIG_SECURITY
1863
1864 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1865 void security_key_free(struct key *key);
1866 int security_key_permission(key_ref_t key_ref, const struct cred *cred,
1867                 enum key_need_perm need_perm);
1868 int security_key_getsecurity(struct key *key, char **_buffer);
1869
1870 #else
1871
1872 static inline int security_key_alloc(struct key *key,
1873                      const struct cred *cred,
1874                      unsigned long flags)
1875 {
1876     return 0;
1877 }
1878
1879 static inline void security_key_free(struct key *key)
1880 {
1881 }
1882
1883 static inline int security_key_permission(key_ref_t key_ref,
1884                       const struct cred *cred,
1885                       enum key_need_perm need_perm)
1886 {
1887     return 0;
1888 }
1889
1890 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1891 {
1892     *_buffer = NULL;
1893     return 0;
1894 }
1895
1896 #endif
1897 #endif /* CONFIG_KEYS */
1898
1899 #ifdef CONFIG_AUDIT
1900 #ifdef CONFIG_SECURITY
1901 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1902 int security_audit_rule_known(struct audit_krule *krule);
1903 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule);
1904 void security_audit_rule_free(void *lsmrule);
1905
1906 #else
1907
1908 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1909                        void **lsmrule)
1910 {
1911     return 0;
1912 }
1913
1914 static inline int security_audit_rule_known(struct audit_krule *krule)
1915 {
1916     return 0;
1917 }
1918
1919 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1920                         void *lsmrule)
1921 {
1922     return 0;
1923 }
1924
1925 static inline void security_audit_rule_free(void *lsmrule)
1926 { }
1927
1928 #endif /* CONFIG_SECURITY */
1929 #endif /* CONFIG_AUDIT */
1930
1931 #ifdef CONFIG_SECURITYFS
1932
1933 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1934                          struct dentry *parent, void *data,
1935                          const struct file_operations *fops);
1936 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1937 struct dentry *securityfs_create_symlink(const char *name,
1938                      struct dentry *parent,
1939                      const char *target,
1940                      const struct inode_operations *iops);
1941 extern void securityfs_remove(struct dentry *dentry);
1942
1943 #else /* CONFIG_SECURITYFS */
1944
1945 static inline struct dentry *securityfs_create_dir(const char *name,
1946                            struct dentry *parent)
1947 {
1948     return ERR_PTR(-ENODEV);
1949 }
1950
1951 static inline struct dentry *securityfs_create_file(const char *name,
1952                             umode_t mode,
1953                             struct dentry *parent,
1954                             void *data,
1955                             const struct file_operations *fops)
1956 {
1957     return ERR_PTR(-ENODEV);
1958 }
1959
1960 static inline struct dentry *securityfs_create_symlink(const char *name,
1961                     struct dentry *parent,
1962                     const char *target,
1963                     const struct inode_operations *iops)
1964 {
1965     return ERR_PTR(-ENODEV);
1966 }
1967
1968 static inline void securityfs_remove(struct dentry *dentry)
1969 {}
1970
1971 #endif
1972
1973 #ifdef CONFIG_BPF_SYSCALL
1974 union bpf_attr;
1975 struct bpf_map;
1976 struct bpf_prog;
1977 struct bpf_prog_aux;
1978 #ifdef CONFIG_SECURITY
1979 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1980 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1981 extern int security_bpf_prog(struct bpf_prog *prog);
1982 extern int security_bpf_map_alloc(struct bpf_map *map);
1983 extern void security_bpf_map_free(struct bpf_map *map);
1984 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1985 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1986 #else
1987 static inline int security_bpf(int cmd, union bpf_attr *attr,
1988                          unsigned int size)
1989 {
1990     return 0;
1991 }
1992
1993 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1994 {
1995     return 0;
1996 }
1997
1998 static inline int security_bpf_prog(struct bpf_prog *prog)
1999 {
2000     return 0;
2001 }
2002
2003 static inline int security_bpf_map_alloc(struct bpf_map *map)
2004 {
2005     return 0;
2006 }
2007
2008 static inline void security_bpf_map_free(struct bpf_map *map)
2009 { }
2010
2011 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
2012 {
2013     return 0;
2014 }
2015
2016 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
2017 { }
2018 #endif /* CONFIG_SECURITY */
2019 #endif /* CONFIG_BPF_SYSCALL */
2020
2021 #ifdef CONFIG_PERF_EVENTS
2022 struct perf_event_attr;
2023 struct perf_event;
2024
2025 #ifdef CONFIG_SECURITY
2026 extern int security_perf_event_open(struct perf_event_attr *attr, int type);
2027 extern int security_perf_event_alloc(struct perf_event *event);
2028 extern void security_perf_event_free(struct perf_event *event);
2029 extern int security_perf_event_read(struct perf_event *event);
2030 extern int security_perf_event_write(struct perf_event *event);
2031 #else
2032 static inline int security_perf_event_open(struct perf_event_attr *attr,
2033                        int type)
2034 {
2035     return 0;
2036 }
2037
2038 static inline int security_perf_event_alloc(struct perf_event *event)
2039 {
2040     return 0;
2041 }
2042
2043 static inline void security_perf_event_free(struct perf_event *event)
2044 {
2045 }
2046
2047 static inline int security_perf_event_read(struct perf_event *event)
2048 {
2049     return 0;
2050 }
2051
2052 static inline int security_perf_event_write(struct perf_event *event)
2053 {
2054     return 0;
2055 }
2056 #endif /* CONFIG_SECURITY */
2057 #endif /* CONFIG_PERF_EVENTS */
2058
2059 #ifdef CONFIG_IO_URING
2060 #ifdef CONFIG_SECURITY
2061 extern int security_uring_override_creds(const struct cred *new);
2062 extern int security_uring_sqpoll(void);
2063 extern int security_uring_cmd(struct io_uring_cmd *ioucmd);
2064 #else
2065 static inline int security_uring_override_creds(const struct cred *new)
2066 {
2067     return 0;
2068 }
2069 static inline int security_uring_sqpoll(void)
2070 {
2071     return 0;
2072 }
2073 static inline int security_uring_cmd(struct io_uring_cmd *ioucmd)
2074 {
2075     return 0;
2076 }
2077 #endif /* CONFIG_SECURITY */
2078 #endif /* CONFIG_IO_URING */
2079
2080 #endif /* ! __LINUX_SECURITY_H */