xref: /linux/include/linux/security.h (revision 33fc69a05c50f00f1218408a56348bcab95b831d)

/*
 * Linux Security plug
 *
 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
 * Copyright (C) 2016 Mellanox Techonologies
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	Due to this file being licensed under the GPL there is controversy over
 *	whether this permits you to write a module that #includes this file
 *	without placing your module under the GPL.  Please consult a lawyer for
 *	advice before doing this.
 *
 */

#ifndef __LINUX_SECURITY_H
#define __LINUX_SECURITY_H

#include <linux/kernel_read_file.h>
#include <linux/key.h>
#include <linux/capability.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/sockptr.h>
#include <linux/bpf.h>
#include <uapi/linux/lsm.h>
#include <linux/lsm/selinux.h>
#include <linux/lsm/smack.h>
#include <linux/lsm/apparmor.h>
#include <linux/lsm/bpf.h>

struct linux_binprm;
struct cred;
struct rlimit;
struct kernel_siginfo;
struct sembuf;
struct kern_ipc_perm;
struct audit_context;
struct super_block;
struct inode;
struct dentry;
struct file;
struct vfsmount;
struct path;
struct qstr;
struct iattr;
struct fown_struct;
struct file_operations;
struct msg_msg;
struct xattr;
struct kernfs_node;
struct xfrm_sec_ctx;
struct mm_struct;
struct fs_context;
struct fs_parameter;
enum fs_value_type;
struct watch;
struct watch_notification;
struct lsm_ctx;

/* Default (no) options for the capable function */
#define CAP_OPT_NONE 0x0
/* If capable should audit the security request */
#define CAP_OPT_NOAUDIT BIT(1)
/* If capable is being called by a setid function */
#define CAP_OPT_INSETID BIT(2)

/* LSM Agnostic defines for security_sb_set_mnt_opts() flags */
#define SECURITY_LSM_NATIVE_LABELS	1

struct ctl_table;
struct audit_krule;
struct user_namespace;
struct timezone;

enum lsm_event {
	LSM_POLICY_CHANGE,
};

struct dm_verity_digest {
	const char *alg;
	const u8 *digest;
	size_t digest_len;
};

enum lsm_integrity_type {
	LSM_INT_DMVERITY_SIG_VALID,
	LSM_INT_DMVERITY_ROOTHASH,
	LSM_INT_FSVERITY_BUILTINSIG_VALID,
};

/*
 * These are reasons that can be passed to the security_locked_down()
 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the
 * ability for userland to modify kernel code) are placed before
 * LOCKDOWN_INTEGRITY_MAX.  Lockdown reasons that protect kernel
 * confidentiality (ie, the ability for userland to extract
 * information from the running kernel that would otherwise be
 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX.
 *
 * LSM authors should note that the semantics of any given lockdown
 * reason are not guaranteed to be stable - the same reason may block
 * one set of features in one kernel release, and a slightly different
 * set of features in a later kernel release. LSMs that seek to expose
 * lockdown policy at any level of granularity other than "none",
 * "integrity" or "confidentiality" are responsible for either
 * ensuring that they expose a consistent level of functionality to
 * userland, or ensuring that userland is aware that this is
 * potentially a moving target. It is easy to misuse this information
 * in a way that could break userspace. Please be careful not to do
 * so.
 *
 * If you add to this, remember to extend lockdown_reasons in
 * security/lockdown/lockdown.c.
 */
enum lockdown_reason {
	LOCKDOWN_NONE,
	LOCKDOWN_MODULE_SIGNATURE,
	LOCKDOWN_DEV_MEM,
	LOCKDOWN_EFI_TEST,
	LOCKDOWN_KEXEC,
	LOCKDOWN_HIBERNATION,
	LOCKDOWN_PCI_ACCESS,
	LOCKDOWN_IOPORT,
	LOCKDOWN_MSR,
	LOCKDOWN_ACPI_TABLES,
	LOCKDOWN_DEVICE_TREE,
	LOCKDOWN_PCMCIA_CIS,
	LOCKDOWN_TIOCSSERIAL,
	LOCKDOWN_MODULE_PARAMETERS,
	LOCKDOWN_MMIOTRACE,
	LOCKDOWN_DEBUGFS,
	LOCKDOWN_XMON_WR,
	LOCKDOWN_BPF_WRITE_USER,
	LOCKDOWN_DBG_WRITE_KERNEL,
	LOCKDOWN_RTAS_ERROR_INJECTION,
	LOCKDOWN_INTEGRITY_MAX,
	LOCKDOWN_KCORE,
	LOCKDOWN_KPROBES,
	LOCKDOWN_BPF_READ_KERNEL,
	LOCKDOWN_DBG_READ_KERNEL,
	LOCKDOWN_PERF,
	LOCKDOWN_TRACEFS,
	LOCKDOWN_XMON_RW,
	LOCKDOWN_XFRM_SECRET,
	LOCKDOWN_CONFIDENTIALITY_MAX,
};

/*
 * Data exported by the security modules
 */
struct lsm_prop {
	struct lsm_prop_selinux selinux;
	struct lsm_prop_smack smack;
	struct lsm_prop_apparmor apparmor;
	struct lsm_prop_bpf bpf;
};

extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1];
extern u32 lsm_active_cnt;
extern const struct lsm_id *lsm_idlist[];

/* These functions are in security/commoncap.c */
extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
		       int cap, unsigned int opts);
extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
extern int cap_ptrace_traceme(struct task_struct *parent);
extern int cap_capget(const struct task_struct *target, kernel_cap_t *effective,
		      kernel_cap_t *inheritable, kernel_cap_t *permitted);
extern int cap_capset(struct cred *new, const struct cred *old,
		      const kernel_cap_t *effective,
		      const kernel_cap_t *inheritable,
		      const kernel_cap_t *permitted);
extern int cap_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file);
int cap_inode_setxattr(struct dentry *dentry, const char *name,
		       const void *value, size_t size, int flags);
int cap_inode_removexattr(struct mnt_idmap *idmap,
			  struct dentry *dentry, const char *name);
int cap_inode_need_killpriv(struct dentry *dentry);
int cap_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry);
int cap_inode_getsecurity(struct mnt_idmap *idmap,
			  struct inode *inode, const char *name, void **buffer,
			  bool alloc);
extern int cap_mmap_addr(unsigned long addr);
extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
			  unsigned long arg4, unsigned long arg5);
extern int cap_task_setscheduler(struct task_struct *p);
extern int cap_task_setioprio(struct task_struct *p, int ioprio);
extern int cap_task_setnice(struct task_struct *p, int nice);
extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);

struct msghdr;
struct sk_buff;
struct sock;
struct sockaddr;
struct socket;
struct flowi_common;
struct dst_entry;
struct xfrm_selector;
struct xfrm_policy;
struct xfrm_state;
struct xfrm_user_sec_ctx;
struct seq_file;
struct sctp_association;

#ifdef CONFIG_MMU
extern unsigned long mmap_min_addr;
extern unsigned long dac_mmap_min_addr;
#else
#define mmap_min_addr		0UL
#define dac_mmap_min_addr	0UL
#endif

/*
 * A "security context" is the text representation of
 * the information used by LSMs.
 * This structure contains the string, its length, and which LSM
 * it is useful for.
 */
struct lsm_context {
	char	*context;	/* Provided by the module */
	u32	len;
	int	id;		/* Identifies the module */
};

/*
 * Values used in the task_security_ops calls
 */
/* setuid or setgid, id0 == uid or gid */
#define LSM_SETID_ID	1

/* setreuid or setregid, id0 == real, id1 == eff */
#define LSM_SETID_RE	2

/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
#define LSM_SETID_RES	4

/* setfsuid or setfsgid, id0 == fsuid or fsgid */
#define LSM_SETID_FS	8

/* Flags for security_task_prlimit(). */
#define LSM_PRLIMIT_READ  1
#define LSM_PRLIMIT_WRITE 2

/* forward declares to avoid warnings */
struct sched_param;
struct request_sock;

/* bprm->unsafe reasons */
#define LSM_UNSAFE_SHARE	1
#define LSM_UNSAFE_PTRACE	2
#define LSM_UNSAFE_NO_NEW_PRIVS	4

#ifdef CONFIG_MMU
extern int mmap_min_addr_handler(const struct ctl_table *table, int write,
				 void *buffer, size_t *lenp, loff_t *ppos);
#endif

/* security_inode_init_security callback function to write xattrs */
typedef int (*initxattrs) (struct inode *inode,
			   const struct xattr *xattr_array, void *fs_data);


/* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
#define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
#define __data_id_stringify(dummy, str) #str,

enum kernel_load_data_id {
	__kernel_read_file_id(__data_id_enumify)
};

static const char * const kernel_load_data_str[] = {
	__kernel_read_file_id(__data_id_stringify)
};

static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
{
	if ((unsigned)id >= LOADING_MAX_ID)
		return kernel_load_data_str[LOADING_UNKNOWN];

	return kernel_load_data_str[id];
}

/**
 * lsmprop_init - initialize a lsm_prop structure
 * @prop: Pointer to the data to initialize
 *
 * Set all secid for all modules to the specified value.
 */
static inline void lsmprop_init(struct lsm_prop *prop)
{
	memset(prop, 0, sizeof(*prop));
}

#ifdef CONFIG_SECURITY

/**
 * lsmprop_is_set - report if there is a value in the lsm_prop
 * @prop: Pointer to the exported LSM data
 *
 * Returns true if there is a value set, false otherwise
 */
static inline bool lsmprop_is_set(struct lsm_prop *prop)
{
	const struct lsm_prop empty = {};

	return !!memcmp(prop, &empty, sizeof(*prop));
}

int call_blocking_lsm_notifier(enum lsm_event event, void *data);
int register_blocking_lsm_notifier(struct notifier_block *nb);
int unregister_blocking_lsm_notifier(struct notifier_block *nb);

/* prototypes */
extern int security_init(void);
extern int early_security_init(void);
extern u64 lsm_name_to_attr(const char *name);

/* Security operations */
int security_binder_set_context_mgr(const struct cred *mgr);
int security_binder_transaction(const struct cred *from,
				const struct cred *to);
int security_binder_transfer_binder(const struct cred *from,
				    const struct cred *to);
int security_binder_transfer_file(const struct cred *from,
				  const struct cred *to, const struct file *file);
int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
int security_ptrace_traceme(struct task_struct *parent);
int security_capget(const struct task_struct *target,
		    kernel_cap_t *effective,
		    kernel_cap_t *inheritable,
		    kernel_cap_t *permitted);
int security_capset(struct cred *new, const struct cred *old,
		    const kernel_cap_t *effective,
		    const kernel_cap_t *inheritable,
		    const kernel_cap_t *permitted);
int security_capable(const struct cred *cred,
		       struct user_namespace *ns,
		       int cap,
		       unsigned int opts);
int security_quotactl(int cmds, int type, int id, const struct super_block *sb);
int security_quota_on(struct dentry *dentry);
int security_syslog(int type);
int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
int security_bprm_creds_for_exec(struct linux_binprm *bprm);
int security_bprm_creds_from_file(struct linux_binprm *bprm, const struct file *file);
int security_bprm_check(struct linux_binprm *bprm);
void security_bprm_committing_creds(const struct linux_binprm *bprm);
void security_bprm_committed_creds(const struct linux_binprm *bprm);
int security_fs_context_submount(struct fs_context *fc, struct super_block *reference);
int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc);
int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param);
int security_sb_alloc(struct super_block *sb);
void security_sb_delete(struct super_block *sb);
void security_sb_free(struct super_block *sb);
void security_free_mnt_opts(void **mnt_opts);
int security_sb_eat_lsm_opts(char *options, void **mnt_opts);
int security_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts);
int security_sb_remount(struct super_block *sb, void *mnt_opts);
int security_sb_kern_mount(const struct super_block *sb);
int security_sb_show_options(struct seq_file *m, struct super_block *sb);
int security_sb_statfs(struct dentry *dentry);
int security_sb_mount(const char *dev_name, const struct path *path,
		      const char *type, unsigned long flags, void *data);
int security_sb_umount(struct vfsmount *mnt, int flags);
int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
int security_sb_set_mnt_opts(struct super_block *sb,
				void *mnt_opts,
				unsigned long kern_flags,
				unsigned long *set_kern_flags);
int security_sb_clone_mnt_opts(const struct super_block *oldsb,
				struct super_block *newsb,
				unsigned long kern_flags,
				unsigned long *set_kern_flags);
int security_move_mount(const struct path *from_path, const struct path *to_path);
int security_dentry_init_security(struct dentry *dentry, int mode,
				  const struct qstr *name,
				  const char **xattr_name,
				  struct lsm_context *lsmcxt);
int security_dentry_create_files_as(struct dentry *dentry, int mode,
					const struct qstr *name,
					const struct cred *old,
					struct cred *new);
int security_path_notify(const struct path *path, u64 mask,
					unsigned int obj_type);
int security_inode_alloc(struct inode *inode, gfp_t gfp);
void security_inode_free(struct inode *inode);
int security_inode_init_security(struct inode *inode, struct inode *dir,
				 const struct qstr *qstr,
				 initxattrs initxattrs, void *fs_data);
int security_inode_init_security_anon(struct inode *inode,
				      const struct qstr *name,
				      const struct inode *context_inode);
int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
void security_inode_post_create_tmpfile(struct mnt_idmap *idmap,
					struct inode *inode);
int security_inode_link(struct dentry *old_dentry, struct inode *dir,
			 struct dentry *new_dentry);
int security_inode_unlink(struct inode *dir, struct dentry *dentry);
int security_inode_symlink(struct inode *dir, struct dentry *dentry,
			   const char *old_name);
int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
			  struct inode *new_dir, struct dentry *new_dentry,
			  unsigned int flags);
int security_inode_readlink(struct dentry *dentry);
int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
			       bool rcu);
int security_inode_permission(struct inode *inode, int mask);
int security_inode_setattr(struct mnt_idmap *idmap,
			   struct dentry *dentry, struct iattr *attr);
void security_inode_post_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
				 int ia_valid);
int security_inode_getattr(const struct path *path);
int security_inode_setxattr(struct mnt_idmap *idmap,
			    struct dentry *dentry, const char *name,
			    const void *value, size_t size, int flags);
int security_inode_set_acl(struct mnt_idmap *idmap,
			   struct dentry *dentry, const char *acl_name,
			   struct posix_acl *kacl);
void security_inode_post_set_acl(struct dentry *dentry, const char *acl_name,
				 struct posix_acl *kacl);
int security_inode_get_acl(struct mnt_idmap *idmap,
			   struct dentry *dentry, const char *acl_name);
int security_inode_remove_acl(struct mnt_idmap *idmap,
			      struct dentry *dentry, const char *acl_name);
void security_inode_post_remove_acl(struct mnt_idmap *idmap,
				    struct dentry *dentry,
				    const char *acl_name);
void security_inode_post_setxattr(struct dentry *dentry, const char *name,
				  const void *value, size_t size, int flags);
int security_inode_getxattr(struct dentry *dentry, const char *name);
int security_inode_listxattr(struct dentry *dentry);
int security_inode_removexattr(struct mnt_idmap *idmap,
			       struct dentry *dentry, const char *name);
void security_inode_post_removexattr(struct dentry *dentry, const char *name);
int security_inode_file_setattr(struct dentry *dentry,
			      struct file_kattr *fa);
int security_inode_file_getattr(struct dentry *dentry,
			      struct file_kattr *fa);
int security_inode_need_killpriv(struct dentry *dentry);
int security_inode_killpriv(struct mnt_idmap *idmap, struct dentry *dentry);
int security_inode_getsecurity(struct mnt_idmap *idmap,
			       struct inode *inode, const char *name,
			       void **buffer, bool alloc);
int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
void security_inode_getlsmprop(struct inode *inode, struct lsm_prop *prop);
int security_inode_copy_up(struct dentry *src, struct cred **new);
int security_inode_copy_up_xattr(struct dentry *src, const char *name);
int security_inode_setintegrity(const struct inode *inode,
				enum lsm_integrity_type type, const void *value,
				size_t size);
int security_kernfs_init_security(struct kernfs_node *kn_dir,
				  struct kernfs_node *kn);
int security_file_permission(struct file *file, int mask);
int security_file_alloc(struct file *file);
void security_file_release(struct file *file);
void security_file_free(struct file *file);
int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
int security_file_ioctl_compat(struct file *file, unsigned int cmd,
			       unsigned long arg);
int security_mmap_file(struct file *file, unsigned long prot,
			unsigned long flags);
int security_mmap_addr(unsigned long addr);
int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
			   unsigned long prot);
int security_file_lock(struct file *file, unsigned int cmd);
int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
void security_file_set_fowner(struct file *file);
int security_file_send_sigiotask(struct task_struct *tsk,
				 struct fown_struct *fown, int sig);
int security_file_receive(struct file *file);
int security_file_open(struct file *file);
int security_file_post_open(struct file *file, int mask);
int security_file_truncate(struct file *file);
int security_task_alloc(struct task_struct *task, u64 clone_flags);
void security_task_free(struct task_struct *task);
int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
void security_cred_free(struct cred *cred);
int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
void security_transfer_creds(struct cred *new, const struct cred *old);
void security_cred_getsecid(const struct cred *c, u32 *secid);
void security_cred_getlsmprop(const struct cred *c, struct lsm_prop *prop);
int security_kernel_act_as(struct cred *new, u32 secid);
int security_kernel_create_files_as(struct cred *new, struct inode *inode);
int security_kernel_module_request(char *kmod_name);
int security_kernel_load_data(enum kernel_load_data_id id, bool contents);
int security_kernel_post_load_data(char *buf, loff_t size,
				   enum kernel_load_data_id id,
				   char *description);
int security_kernel_read_file(struct file *file, enum kernel_read_file_id id,
			      bool contents);
int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
				   enum kernel_read_file_id id);
int security_task_fix_setuid(struct cred *new, const struct cred *old,
			     int flags);
int security_task_fix_setgid(struct cred *new, const struct cred *old,
			     int flags);
int security_task_fix_setgroups(struct cred *new, const struct cred *old);
int security_task_setpgid(struct task_struct *p, pid_t pgid);
int security_task_getpgid(struct task_struct *p);
int security_task_getsid(struct task_struct *p);
void security_current_getlsmprop_subj(struct lsm_prop *prop);
void security_task_getlsmprop_obj(struct task_struct *p, struct lsm_prop *prop);
int security_task_setnice(struct task_struct *p, int nice);
int security_task_setioprio(struct task_struct *p, int ioprio);
int security_task_getioprio(struct task_struct *p);
int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
			  unsigned int flags);
int security_task_setrlimit(struct task_struct *p, unsigned int resource,
		struct rlimit *new_rlim);
int security_task_setscheduler(struct task_struct *p);
int security_task_getscheduler(struct task_struct *p);
int security_task_movememory(struct task_struct *p);
int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
			int sig, const struct cred *cred);
int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
			unsigned long arg4, unsigned long arg5);
void security_task_to_inode(struct task_struct *p, struct inode *inode);
int security_create_user_ns(const struct cred *cred);
int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
void security_ipc_getlsmprop(struct kern_ipc_perm *ipcp, struct lsm_prop *prop);
int security_msg_msg_alloc(struct msg_msg *msg);
void security_msg_msg_free(struct msg_msg *msg);
int security_msg_queue_alloc(struct kern_ipc_perm *msq);
void security_msg_queue_free(struct kern_ipc_perm *msq);
int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
			      struct msg_msg *msg, int msqflg);
int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
			      struct task_struct *target, long type, int mode);
int security_shm_alloc(struct kern_ipc_perm *shp);
void security_shm_free(struct kern_ipc_perm *shp);
int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
int security_sem_alloc(struct kern_ipc_perm *sma);
void security_sem_free(struct kern_ipc_perm *sma);
int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
			unsigned nsops, int alter);
void security_d_instantiate(struct dentry *dentry, struct inode *inode);
int security_getselfattr(unsigned int attr, struct lsm_ctx __user *ctx,
			 u32 __user *size, u32 flags);
int security_setselfattr(unsigned int attr, struct lsm_ctx __user *ctx,
			 u32 size, u32 flags);
int security_getprocattr(struct task_struct *p, int lsmid, const char *name,
			 char **value);
int security_setprocattr(int lsmid, const char *name, void *value, size_t size);
int security_ismaclabel(const char *name);
int security_secid_to_secctx(u32 secid, struct lsm_context *cp);
int security_lsmprop_to_secctx(struct lsm_prop *prop, struct lsm_context *cp,
			       int lsmid);
int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
void security_release_secctx(struct lsm_context *cp);
void security_inode_invalidate_secctx(struct inode *inode);
int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
int security_inode_getsecctx(struct inode *inode, struct lsm_context *cp);
int security_locked_down(enum lockdown_reason what);
int lsm_fill_user_ctx(struct lsm_ctx __user *uctx, u32 *uctx_len,
		      void *val, size_t val_len, u64 id, u64 flags);
int security_bdev_alloc(struct block_device *bdev);
void security_bdev_free(struct block_device *bdev);
int security_bdev_setintegrity(struct block_device *bdev,
			       enum lsm_integrity_type type, const void *value,
			       size_t size);
#else /* CONFIG_SECURITY */

/**
 * lsmprop_is_set - report if there is a value in the lsm_prop
 * @prop: Pointer to the exported LSM data
 *
 * Returns true if there is a value set, false otherwise
 */
static inline bool lsmprop_is_set(struct lsm_prop *prop)
{
	return false;
}

static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data)
{
	return 0;
}

static inline int register_blocking_lsm_notifier(struct notifier_block *nb)
{
	return 0;
}

static inline  int unregister_blocking_lsm_notifier(struct notifier_block *nb)
{
	return 0;
}

static inline u64 lsm_name_to_attr(const char *name)
{
	return LSM_ATTR_UNDEF;
}

static inline void security_free_mnt_opts(void **mnt_opts)
{
}

/*
 * This is the default capabilities functionality.  Most of these functions
 * are just stubbed out, but a few must call the proper capable code.
 */

static inline int security_init(void)
{
	return 0;
}

static inline int early_security_init(void)
{
	return 0;
}

static inline int security_binder_set_context_mgr(const struct cred *mgr)
{
	return 0;
}

static inline int security_binder_transaction(const struct cred *from,
					      const struct cred *to)
{
	return 0;
}

static inline int security_binder_transfer_binder(const struct cred *from,
						  const struct cred *to)
{
	return 0;
}

static inline int security_binder_transfer_file(const struct cred *from,
						const struct cred *to,
						const struct file *file)
{
	return 0;
}

static inline int security_ptrace_access_check(struct task_struct *child,
					     unsigned int mode)
{
	return cap_ptrace_access_check(child, mode);
}

static inline int security_ptrace_traceme(struct task_struct *parent)
{
	return cap_ptrace_traceme(parent);
}

static inline int security_capget(const struct task_struct *target,
				   kernel_cap_t *effective,
				   kernel_cap_t *inheritable,
				   kernel_cap_t *permitted)
{
	return cap_capget(target, effective, inheritable, permitted);
}

static inline int security_capset(struct cred *new,
				   const struct cred *old,
				   const kernel_cap_t *effective,
				   const kernel_cap_t *inheritable,
				   const kernel_cap_t *permitted)
{
	return cap_capset(new, old, effective, inheritable, permitted);
}

static inline int security_capable(const struct cred *cred,
				   struct user_namespace *ns,
				   int cap,
				   unsigned int opts)
{
	return cap_capable(cred, ns, cap, opts);
}

static inline int security_quotactl(int cmds, int type, int id,
				     const struct super_block *sb)
{
	return 0;
}

static inline int security_quota_on(struct dentry *dentry)
{
	return 0;
}

static inline int security_syslog(int type)
{
	return 0;
}

static inline int security_settime64(const struct timespec64 *ts,
				     const struct timezone *tz)
{
	return cap_settime(ts, tz);
}

static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
{
	return __vm_enough_memory(mm, pages, !cap_vm_enough_memory(mm, pages));
}

static inline int security_bprm_creds_for_exec(struct linux_binprm *bprm)
{
	return 0;
}

static inline int security_bprm_creds_from_file(struct linux_binprm *bprm,
						const struct file *file)
{
	return cap_bprm_creds_from_file(bprm, file);
}

static inline int security_bprm_check(struct linux_binprm *bprm)
{
	return 0;
}

static inline void security_bprm_committing_creds(const struct linux_binprm *bprm)
{
}

static inline void security_bprm_committed_creds(const struct linux_binprm *bprm)
{
}

static inline int security_fs_context_submount(struct fs_context *fc,
					   struct super_block *reference)
{
	return 0;
}
static inline int security_fs_context_dup(struct fs_context *fc,
					  struct fs_context *src_fc)
{
	return 0;
}
static inline int security_fs_context_parse_param(struct fs_context *fc,
						  struct fs_parameter *param)
{
	return -ENOPARAM;
}

static inline int security_sb_alloc(struct super_block *sb)
{
	return 0;
}

static inline void security_sb_delete(struct super_block *sb)
{ }

static inline void security_sb_free(struct super_block *sb)
{ }

static inline int security_sb_eat_lsm_opts(char *options,
					   void **mnt_opts)
{
	return 0;
}

static inline int security_sb_remount(struct super_block *sb,
				      void *mnt_opts)
{
	return 0;
}

static inline int security_sb_mnt_opts_compat(struct super_block *sb,
					      void *mnt_opts)
{
	return 0;
}


static inline int security_sb_kern_mount(struct super_block *sb)
{
	return 0;
}

static inline int security_sb_show_options(struct seq_file *m,
					   struct super_block *sb)
{
	return 0;
}

static inline int security_sb_statfs(struct dentry *dentry)
{
	return 0;
}

static inline int security_sb_mount(const char *dev_name, const struct path *path,
				    const char *type, unsigned long flags,
				    void *data)
{
	return 0;
}

static inline int security_sb_umount(struct vfsmount *mnt, int flags)
{
	return 0;
}

static inline int security_sb_pivotroot(const struct path *old_path,
					const struct path *new_path)
{
	return 0;
}

static inline int security_sb_set_mnt_opts(struct super_block *sb,
					   void *mnt_opts,
					   unsigned long kern_flags,
					   unsigned long *set_kern_flags)
{
	return 0;
}

static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
					      struct super_block *newsb,
					      unsigned long kern_flags,
					      unsigned long *set_kern_flags)
{
	return 0;
}

static inline int security_move_mount(const struct path *from_path,
				      const struct path *to_path)
{
	return 0;
}

static inline int security_path_notify(const struct path *path, u64 mask,
				unsigned int obj_type)
{
	return 0;
}

static inline int security_inode_alloc(struct inode *inode, gfp_t gfp)
{
	return 0;
}

static inline void security_inode_free(struct inode *inode)
{ }

static inline int security_dentry_init_security(struct dentry *dentry,
						 int mode,
						 const struct qstr *name,
						 const char **xattr_name,
						 struct lsm_context *lsmcxt)
{
	return -EOPNOTSUPP;
}

static inline int security_dentry_create_files_as(struct dentry *dentry,
						  int mode, const struct qstr *name,
						  const struct cred *old,
						  struct cred *new)
{
	return 0;
}


static inline int security_inode_init_security(struct inode *inode,
						struct inode *dir,
						const struct qstr *qstr,
						const initxattrs xattrs,
						void *fs_data)
{
	return 0;
}

static inline int security_inode_init_security_anon(struct inode *inode,
						    const struct qstr *name,
						    const struct inode *context_inode)
{
	return 0;
}

static inline int security_inode_create(struct inode *dir,
					 struct dentry *dentry,
					 umode_t mode)
{
	return 0;
}

static inline void
security_inode_post_create_tmpfile(struct mnt_idmap *idmap, struct inode *inode)
{ }

static inline int security_inode_link(struct dentry *old_dentry,
				       struct inode *dir,
				       struct dentry *new_dentry)
{
	return 0;
}

static inline int security_inode_unlink(struct inode *dir,
					 struct dentry *dentry)
{
	return 0;
}

static inline int security_inode_symlink(struct inode *dir,
					  struct dentry *dentry,
					  const char *old_name)
{
	return 0;
}

static inline int security_inode_mkdir(struct inode *dir,
					struct dentry *dentry,
					int mode)
{
	return 0;
}

static inline int security_inode_rmdir(struct inode *dir,
					struct dentry *dentry)
{
	return 0;
}

static inline int security_inode_mknod(struct inode *dir,
					struct dentry *dentry,
					int mode, dev_t dev)
{
	return 0;
}

static inline int security_inode_rename(struct inode *old_dir,
					 struct dentry *old_dentry,
					 struct inode *new_dir,
					 struct dentry *new_dentry,
					 unsigned int flags)
{
	return 0;
}

static inline int security_inode_readlink(struct dentry *dentry)
{
	return 0;
}

static inline int security_inode_follow_link(struct dentry *dentry,
					     struct inode *inode,
					     bool rcu)
{
	return 0;
}

static inline int security_inode_permission(struct inode *inode, int mask)
{
	return 0;
}

static inline int security_inode_setattr(struct mnt_idmap *idmap,
					 struct dentry *dentry,
					 struct iattr *attr)
{
	return 0;
}

static inline void
security_inode_post_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
			    int ia_valid)
{ }

static inline int security_inode_getattr(const struct path *path)
{
	return 0;
}

static inline int security_inode_setxattr(struct mnt_idmap *idmap,
		struct dentry *dentry, const char *name, const void *value,
		size_t size, int flags)
{
	return cap_inode_setxattr(dentry, name, value, size, flags);
}

static inline int security_inode_set_acl(struct mnt_idmap *idmap,
					 struct dentry *dentry,
					 const char *acl_name,
					 struct posix_acl *kacl)
{
	return 0;
}

static inline void security_inode_post_set_acl(struct dentry *dentry,
					       const char *acl_name,
					       struct posix_acl *kacl)
{ }

static inline int security_inode_get_acl(struct mnt_idmap *idmap,
					 struct dentry *dentry,
					 const char *acl_name)
{
	return 0;
}

static inline int security_inode_remove_acl(struct mnt_idmap *idmap,
					    struct dentry *dentry,
					    const char *acl_name)
{
	return 0;
}

static inline void security_inode_post_remove_acl(struct mnt_idmap *idmap,
						  struct dentry *dentry,
						  const char *acl_name)
{ }

static inline void security_inode_post_setxattr(struct dentry *dentry,
		const char *name, const void *value, size_t size, int flags)
{ }

static inline int security_inode_getxattr(struct dentry *dentry,
			const char *name)
{
	return 0;
}

static inline int security_inode_listxattr(struct dentry *dentry)
{
	return 0;
}

static inline int security_inode_removexattr(struct mnt_idmap *idmap,
					     struct dentry *dentry,
					     const char *name)
{
	return cap_inode_removexattr(idmap, dentry, name);
}

static inline void security_inode_post_removexattr(struct dentry *dentry,
						   const char *name)
{ }

static inline int security_inode_file_setattr(struct dentry *dentry,
					      struct file_kattr *fa)
{
	return 0;
}

static inline int security_inode_file_getattr(struct dentry *dentry,
					      struct file_kattr *fa)
{
	return 0;
}

static inline int security_inode_need_killpriv(struct dentry *dentry)
{
	return cap_inode_need_killpriv(dentry);
}

static inline int security_inode_killpriv(struct mnt_idmap *idmap,
					  struct dentry *dentry)
{
	return cap_inode_killpriv(idmap, dentry);
}

static inline int security_inode_getsecurity(struct mnt_idmap *idmap,
					     struct inode *inode,
					     const char *name, void **buffer,
					     bool alloc)
{
	return cap_inode_getsecurity(idmap, inode, name, buffer, alloc);
}

static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
{
	return -EOPNOTSUPP;
}

static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
{
	return 0;
}

static inline void security_inode_getlsmprop(struct inode *inode,
					     struct lsm_prop *prop)
{
	lsmprop_init(prop);
}

static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
{
	return 0;
}

static inline int security_inode_setintegrity(const struct inode *inode,
					      enum lsm_integrity_type type,
					      const void *value, size_t size)
{
	return 0;
}

static inline int security_kernfs_init_security(struct kernfs_node *kn_dir,
						struct kernfs_node *kn)
{
	return 0;
}

static inline int security_inode_copy_up_xattr(struct dentry *src, const char *name)
{
	return -EOPNOTSUPP;
}

static inline int security_file_permission(struct file *file, int mask)
{
	return 0;
}

static inline int security_file_alloc(struct file *file)
{
	return 0;
}

static inline void security_file_release(struct file *file)
{ }

static inline void security_file_free(struct file *file)
{ }

static inline int security_file_ioctl(struct file *file, unsigned int cmd,
				      unsigned long arg)
{
	return 0;
}

static inline int security_file_ioctl_compat(struct file *file,
					     unsigned int cmd,
					     unsigned long arg)
{
	return 0;
}

static inline int security_mmap_file(struct file *file, unsigned long prot,
				     unsigned long flags)
{
	return 0;
}

static inline int security_mmap_addr(unsigned long addr)
{
	return cap_mmap_addr(addr);
}

static inline int security_file_mprotect(struct vm_area_struct *vma,
					 unsigned long reqprot,
					 unsigned long prot)
{
	return 0;
}

static inline int security_file_lock(struct file *file, unsigned int cmd)
{
	return 0;
}

static inline int security_file_fcntl(struct file *file, unsigned int cmd,
				      unsigned long arg)
{
	return 0;
}

static inline void security_file_set_fowner(struct file *file)
{
	return;
}

static inline int security_file_send_sigiotask(struct task_struct *tsk,
					       struct fown_struct *fown,
					       int sig)
{
	return 0;
}

static inline int security_file_receive(struct file *file)
{
	return 0;
}

static inline int security_file_open(struct file *file)
{
	return 0;
}

static inline int security_file_post_open(struct file *file, int mask)
{
	return 0;
}

static inline int security_file_truncate(struct file *file)
{
	return 0;
}

static inline int security_task_alloc(struct task_struct *task,
				      u64 clone_flags)
{
	return 0;
}

static inline void security_task_free(struct task_struct *task)
{ }

static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
{
	return 0;
}

static inline void security_cred_free(struct cred *cred)
{ }

static inline int security_prepare_creds(struct cred *new,
					 const struct cred *old,
					 gfp_t gfp)
{
	return 0;
}

static inline void security_transfer_creds(struct cred *new,
					   const struct cred *old)
{
}

static inline void security_cred_getsecid(const struct cred *c, u32 *secid)
{
	*secid = 0;
}

static inline void security_cred_getlsmprop(const struct cred *c,
					    struct lsm_prop *prop)
{ }

static inline int security_kernel_act_as(struct cred *cred, u32 secid)
{
	return 0;
}

static inline int security_kernel_create_files_as(struct cred *cred,
						  struct inode *inode)
{
	return 0;
}

static inline int security_kernel_module_request(char *kmod_name)
{
	return 0;
}

static inline int security_kernel_load_data(enum kernel_load_data_id id, bool contents)
{
	return 0;
}

static inline int security_kernel_post_load_data(char *buf, loff_t size,
						 enum kernel_load_data_id id,
						 char *description)
{
	return 0;
}

static inline int security_kernel_read_file(struct file *file,
					    enum kernel_read_file_id id,
					    bool contents)
{
	return 0;
}

static inline int security_kernel_post_read_file(struct file *file,
						 char *buf, loff_t size,
						 enum kernel_read_file_id id)
{
	return 0;
}

static inline int security_task_fix_setuid(struct cred *new,
					   const struct cred *old,
					   int flags)
{
	return cap_task_fix_setuid(new, old, flags);
}

static inline int security_task_fix_setgid(struct cred *new,
					   const struct cred *old,
					   int flags)
{
	return 0;
}

static inline int security_task_fix_setgroups(struct cred *new,
					   const struct cred *old)
{
	return 0;
}

static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
{
	return 0;
}

static inline int security_task_getpgid(struct task_struct *p)
{
	return 0;
}

static inline int security_task_getsid(struct task_struct *p)
{
	return 0;
}

static inline void security_current_getlsmprop_subj(struct lsm_prop *prop)
{
	lsmprop_init(prop);
}

static inline void security_task_getlsmprop_obj(struct task_struct *p,
						struct lsm_prop *prop)
{
	lsmprop_init(prop);
}

static inline int security_task_setnice(struct task_struct *p, int nice)
{
	return cap_task_setnice(p, nice);
}

static inline int security_task_setioprio(struct task_struct *p, int ioprio)
{
	return cap_task_setioprio(p, ioprio);
}

static inline int security_task_getioprio(struct task_struct *p)
{
	return 0;
}

static inline int security_task_prlimit(const struct cred *cred,
					const struct cred *tcred,
					unsigned int flags)
{
	return 0;
}

static inline int security_task_setrlimit(struct task_struct *p,
					  unsigned int resource,
					  struct rlimit *new_rlim)
{
	return 0;
}

static inline int security_task_setscheduler(struct task_struct *p)
{
	return cap_task_setscheduler(p);
}

static inline int security_task_getscheduler(struct task_struct *p)
{
	return 0;
}

static inline int security_task_movememory(struct task_struct *p)
{
	return 0;
}

static inline int security_task_kill(struct task_struct *p,
				     struct kernel_siginfo *info, int sig,
				     const struct cred *cred)
{
	return 0;
}

static inline int security_task_prctl(int option, unsigned long arg2,
				      unsigned long arg3,
				      unsigned long arg4,
				      unsigned long arg5)
{
	return cap_task_prctl(option, arg2, arg3, arg4, arg5);
}

static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
{ }

static inline int security_create_user_ns(const struct cred *cred)
{
	return 0;
}

static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
					  short flag)
{
	return 0;
}

static inline void security_ipc_getlsmprop(struct kern_ipc_perm *ipcp,
					   struct lsm_prop *prop)
{
	lsmprop_init(prop);
}

static inline int security_msg_msg_alloc(struct msg_msg *msg)
{
	return 0;
}

static inline void security_msg_msg_free(struct msg_msg *msg)
{ }

static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
{
	return 0;
}

static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
{ }

static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
					       int msqflg)
{
	return 0;
}

static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
{
	return 0;
}

static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
					    struct msg_msg *msg, int msqflg)
{
	return 0;
}

static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
					    struct msg_msg *msg,
					    struct task_struct *target,
					    long type, int mode)
{
	return 0;
}

static inline int security_shm_alloc(struct kern_ipc_perm *shp)
{
	return 0;
}

static inline void security_shm_free(struct kern_ipc_perm *shp)
{ }

static inline int security_shm_associate(struct kern_ipc_perm *shp,
					 int shmflg)
{
	return 0;
}

static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
{
	return 0;
}

static inline int security_shm_shmat(struct kern_ipc_perm *shp,
				     char __user *shmaddr, int shmflg)
{
	return 0;
}

static inline int security_sem_alloc(struct kern_ipc_perm *sma)
{
	return 0;
}

static inline void security_sem_free(struct kern_ipc_perm *sma)
{ }

static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
{
	return 0;
}

static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
{
	return 0;
}

static inline int security_sem_semop(struct kern_ipc_perm *sma,
				     struct sembuf *sops, unsigned nsops,
				     int alter)
{
	return 0;
}

static inline void security_d_instantiate(struct dentry *dentry,
					  struct inode *inode)
{ }

static inline int security_getselfattr(unsigned int attr,
				       struct lsm_ctx __user *ctx,
				       size_t __user *size, u32 flags)
{
	return -EOPNOTSUPP;
}

static inline int security_setselfattr(unsigned int attr,
				       struct lsm_ctx __user *ctx,
				       size_t size, u32 flags)
{
	return -EOPNOTSUPP;
}

static inline int security_getprocattr(struct task_struct *p, int lsmid,
				       const char *name, char **value)
{
	return -EINVAL;
}

static inline int security_setprocattr(int lsmid, char *name, void *value,
				       size_t size)
{
	return -EINVAL;
}

static inline int security_ismaclabel(const char *name)
{
	return 0;
}

static inline int security_secid_to_secctx(u32 secid, struct lsm_context *cp)
{
	return -EOPNOTSUPP;
}

static inline int security_lsmprop_to_secctx(struct lsm_prop *prop,
					     struct lsm_context *cp,
					     int lsmid)
{
	return -EOPNOTSUPP;
}

static inline int security_secctx_to_secid(const char *secdata,
					   u32 seclen,
					   u32 *secid)
{
	return -EOPNOTSUPP;
}

static inline void security_release_secctx(struct lsm_context *cp)
{
}

static inline void security_inode_invalidate_secctx(struct inode *inode)
{
}

static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
{
	return -EOPNOTSUPP;
}
static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
{
	return -EOPNOTSUPP;
}
static inline int security_inode_getsecctx(struct inode *inode,
					   struct lsm_context *cp)
{
	return -EOPNOTSUPP;
}
static inline int security_locked_down(enum lockdown_reason what)
{
	return 0;
}
static inline int lsm_fill_user_ctx(struct lsm_ctx __user *uctx,
				    u32 *uctx_len, void *val, size_t val_len,
				    u64 id, u64 flags)
{
	return -EOPNOTSUPP;
}

static inline int security_bdev_alloc(struct block_device *bdev)
{
	return 0;
}

static inline void security_bdev_free(struct block_device *bdev)
{
}

static inline int security_bdev_setintegrity(struct block_device *bdev,
					     enum lsm_integrity_type type,
					     const void *value, size_t size)
{
	return 0;
}

#endif	/* CONFIG_SECURITY */

#if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE)
int security_post_notification(const struct cred *w_cred,
			       const struct cred *cred,
			       struct watch_notification *n);
#else
static inline int security_post_notification(const struct cred *w_cred,
					     const struct cred *cred,
					     struct watch_notification *n)
{
	return 0;
}
#endif

#if defined(CONFIG_SECURITY) && defined(CONFIG_KEY_NOTIFICATIONS)
int security_watch_key(struct key *key);
#else
static inline int security_watch_key(struct key *key)
{
	return 0;
}
#endif

#ifdef CONFIG_SECURITY_NETWORK

int security_netlink_send(struct sock *sk, struct sk_buff *skb);
int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
int security_unix_may_send(struct socket *sock,  struct socket *other);
int security_socket_create(int family, int type, int protocol, int kern);
int security_socket_post_create(struct socket *sock, int family,
				int type, int protocol, int kern);
int security_socket_socketpair(struct socket *socka, struct socket *sockb);
int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
int security_socket_listen(struct socket *sock, int backlog);
int security_socket_accept(struct socket *sock, struct socket *newsock);
int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
			    int size, int flags);
int security_socket_getsockname(struct socket *sock);
int security_socket_getpeername(struct socket *sock);
int security_socket_getsockopt(struct socket *sock, int level, int optname);
int security_socket_setsockopt(struct socket *sock, int level, int optname);
int security_socket_shutdown(struct socket *sock, int how);
int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval,
				      sockptr_t optlen, unsigned int len);
int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
void security_sk_free(struct sock *sk);
void security_sk_clone(const struct sock *sk, struct sock *newsk);
void security_sk_classify_flow(const struct sock *sk,
			       struct flowi_common *flic);
void security_req_classify_flow(const struct request_sock *req,
				struct flowi_common *flic);
void security_sock_graft(struct sock*sk, struct socket *parent);
int security_inet_conn_request(const struct sock *sk,
			struct sk_buff *skb, struct request_sock *req);
void security_inet_csk_clone(struct sock *newsk,
			const struct request_sock *req);
void security_inet_conn_established(struct sock *sk,
			struct sk_buff *skb);
int security_secmark_relabel_packet(u32 secid);
void security_secmark_refcount_inc(void);
void security_secmark_refcount_dec(void);
int security_tun_dev_alloc_security(void **security);
void security_tun_dev_free_security(void *security);
int security_tun_dev_create(void);
int security_tun_dev_attach_queue(void *security);
int security_tun_dev_attach(struct sock *sk, void *security);
int security_tun_dev_open(void *security);
int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb);
int security_sctp_bind_connect(struct sock *sk, int optname,
			       struct sockaddr *address, int addrlen);
void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk,
			    struct sock *newsk);
int security_sctp_assoc_established(struct sctp_association *asoc,
				    struct sk_buff *skb);
int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk);

#else	/* CONFIG_SECURITY_NETWORK */
static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
{
	return 0;
}

static inline int security_unix_stream_connect(struct sock *sock,
					       struct sock *other,
					       struct sock *newsk)
{
	return 0;
}

static inline int security_unix_may_send(struct socket *sock,
					 struct socket *other)
{
	return 0;
}

static inline int security_socket_create(int family, int type,
					 int protocol, int kern)
{
	return 0;
}

static inline int security_socket_post_create(struct socket *sock,
					      int family,
					      int type,
					      int protocol, int kern)
{
	return 0;
}

static inline int security_socket_socketpair(struct socket *socka,
					     struct socket *sockb)
{
	return 0;
}

static inline int security_socket_bind(struct socket *sock,
				       struct sockaddr *address,
				       int addrlen)
{
	return 0;
}

static inline int security_socket_connect(struct socket *sock,
					  struct sockaddr *address,
					  int addrlen)
{
	return 0;
}

static inline int security_socket_listen(struct socket *sock, int backlog)
{
	return 0;
}

static inline int security_socket_accept(struct socket *sock,
					 struct socket *newsock)
{
	return 0;
}

static inline int security_socket_sendmsg(struct socket *sock,
					  struct msghdr *msg, int size)
{
	return 0;
}

static inline int security_socket_recvmsg(struct socket *sock,
					  struct msghdr *msg, int size,
					  int flags)
{
	return 0;
}

static inline int security_socket_getsockname(struct socket *sock)
{
	return 0;
}

static inline int security_socket_getpeername(struct socket *sock)
{
	return 0;
}

static inline int security_socket_getsockopt(struct socket *sock,
					     int level, int optname)
{
	return 0;
}

static inline int security_socket_setsockopt(struct socket *sock,
					     int level, int optname)
{
	return 0;
}

static inline int security_socket_shutdown(struct socket *sock, int how)
{
	return 0;
}
static inline int security_sock_rcv_skb(struct sock *sk,
					struct sk_buff *skb)
{
	return 0;
}

static inline int security_socket_getpeersec_stream(struct socket *sock,
						    sockptr_t optval,
						    sockptr_t optlen,
						    unsigned int len)
{
	return -ENOPROTOOPT;
}

static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
{
	return -ENOPROTOOPT;
}

static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
{
	return 0;
}

static inline void security_sk_free(struct sock *sk)
{
}

static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
{
}

static inline void security_sk_classify_flow(const struct sock *sk,
					     struct flowi_common *flic)
{
}

static inline void security_req_classify_flow(const struct request_sock *req,
					      struct flowi_common *flic)
{
}

static inline void security_sock_graft(struct sock *sk, struct socket *parent)
{
}

static inline int security_inet_conn_request(const struct sock *sk,
			struct sk_buff *skb, struct request_sock *req)
{
	return 0;
}

static inline void security_inet_csk_clone(struct sock *newsk,
			const struct request_sock *req)
{
}

static inline void security_inet_conn_established(struct sock *sk,
			struct sk_buff *skb)
{
}

static inline int security_secmark_relabel_packet(u32 secid)
{
	return 0;
}

static inline void security_secmark_refcount_inc(void)
{
}

static inline void security_secmark_refcount_dec(void)
{
}

static inline int security_tun_dev_alloc_security(void **security)
{
	return 0;
}

static inline void security_tun_dev_free_security(void *security)
{
}

static inline int security_tun_dev_create(void)
{
	return 0;
}

static inline int security_tun_dev_attach_queue(void *security)
{
	return 0;
}

static inline int security_tun_dev_attach(struct sock *sk, void *security)
{
	return 0;
}

static inline int security_tun_dev_open(void *security)
{
	return 0;
}

static inline int security_sctp_assoc_request(struct sctp_association *asoc,
					      struct sk_buff *skb)
{
	return 0;
}

static inline int security_sctp_bind_connect(struct sock *sk, int optname,
					     struct sockaddr *address,
					     int addrlen)
{
	return 0;
}

static inline void security_sctp_sk_clone(struct sctp_association *asoc,
					  struct sock *sk,
					  struct sock *newsk)
{
}

static inline int security_sctp_assoc_established(struct sctp_association *asoc,
						  struct sk_buff *skb)
{
	return 0;
}

static inline int security_mptcp_add_subflow(struct sock *sk, struct sock *ssk)
{
	return 0;
}
#endif	/* CONFIG_SECURITY_NETWORK */

#ifdef CONFIG_SECURITY_INFINIBAND
int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
int security_ib_alloc_security(void **sec);
void security_ib_free_security(void *sec);
#else	/* CONFIG_SECURITY_INFINIBAND */
static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
{
	return 0;
}

static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
{
	return 0;
}

static inline int security_ib_alloc_security(void **sec)
{
	return 0;
}

static inline void security_ib_free_security(void *sec)
{
}
#endif	/* CONFIG_SECURITY_INFINIBAND */

#ifdef CONFIG_SECURITY_NETWORK_XFRM

int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
			       struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
				      struct xfrm_sec_ctx *polsec, u32 secid);
int security_xfrm_state_delete(struct xfrm_state *x);
void security_xfrm_state_free(struct xfrm_state *x);
int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid);
int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
				       struct xfrm_policy *xp,
				       const struct flowi_common *flic);
int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic);

#else	/* CONFIG_SECURITY_NETWORK_XFRM */

static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
					     struct xfrm_user_sec_ctx *sec_ctx,
					     gfp_t gfp)
{
	return 0;
}

static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
{
	return 0;
}

static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
{
}

static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
{
	return 0;
}

static inline int security_xfrm_state_alloc(struct xfrm_state *x,
					struct xfrm_user_sec_ctx *sec_ctx)
{
	return 0;
}

static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
					struct xfrm_sec_ctx *polsec, u32 secid)
{
	return 0;
}

static inline void security_xfrm_state_free(struct xfrm_state *x)
{
}

static inline int security_xfrm_state_delete(struct xfrm_state *x)
{
	return 0;
}

static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid)
{
	return 0;
}

static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
						     struct xfrm_policy *xp,
						     const struct flowi_common *flic)
{
	return 1;
}

static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
{
	return 0;
}

static inline void security_skb_classify_flow(struct sk_buff *skb,
					      struct flowi_common *flic)
{
}

#endif	/* CONFIG_SECURITY_NETWORK_XFRM */

#ifdef CONFIG_SECURITY_PATH
int security_path_unlink(const struct path *dir, struct dentry *dentry);
int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
int security_path_rmdir(const struct path *dir, struct dentry *dentry);
int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
			unsigned int dev);
void security_path_post_mknod(struct mnt_idmap *idmap, struct dentry *dentry);
int security_path_truncate(const struct path *path);
int security_path_symlink(const struct path *dir, struct dentry *dentry,
			  const char *old_name);
int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
		       struct dentry *new_dentry);
int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
			 const struct path *new_dir, struct dentry *new_dentry,
			 unsigned int flags);
int security_path_chmod(const struct path *path, umode_t mode);
int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
int security_path_chroot(const struct path *path);
#else	/* CONFIG_SECURITY_PATH */
static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
{
	return 0;
}

static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
				      umode_t mode)
{
	return 0;
}

static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
{
	return 0;
}

static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
				      umode_t mode, unsigned int dev)
{
	return 0;
}

static inline void security_path_post_mknod(struct mnt_idmap *idmap,
					    struct dentry *dentry)
{ }

static inline int security_path_truncate(const struct path *path)
{
	return 0;
}

static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
					const char *old_name)
{
	return 0;
}

static inline int security_path_link(struct dentry *old_dentry,
				     const struct path *new_dir,
				     struct dentry *new_dentry)
{
	return 0;
}

static inline int security_path_rename(const struct path *old_dir,
				       struct dentry *old_dentry,
				       const struct path *new_dir,
				       struct dentry *new_dentry,
				       unsigned int flags)
{
	return 0;
}

static inline int security_path_chmod(const struct path *path, umode_t mode)
{
	return 0;
}

static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
{
	return 0;
}

static inline int security_path_chroot(const struct path *path)
{
	return 0;
}
#endif	/* CONFIG_SECURITY_PATH */

#ifdef CONFIG_KEYS
#ifdef CONFIG_SECURITY

int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
void security_key_free(struct key *key);
int security_key_permission(key_ref_t key_ref, const struct cred *cred,
			    enum key_need_perm need_perm);
int security_key_getsecurity(struct key *key, char **_buffer);
void security_key_post_create_or_update(struct key *keyring, struct key *key,
					const void *payload, size_t payload_len,
					unsigned long flags, bool create);

#else

static inline int security_key_alloc(struct key *key,
				     const struct cred *cred,
				     unsigned long flags)
{
	return 0;
}

static inline void security_key_free(struct key *key)
{
}

static inline int security_key_permission(key_ref_t key_ref,
					  const struct cred *cred,
					  enum key_need_perm need_perm)
{
	return 0;
}

static inline int security_key_getsecurity(struct key *key, char **_buffer)
{
	*_buffer = NULL;
	return 0;
}

static inline void security_key_post_create_or_update(struct key *keyring,
						      struct key *key,
						      const void *payload,
						      size_t payload_len,
						      unsigned long flags,
						      bool create)
{ }

#endif
#endif /* CONFIG_KEYS */

#ifdef CONFIG_AUDIT
#ifdef CONFIG_SECURITY
int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule,
			     gfp_t gfp);
int security_audit_rule_known(struct audit_krule *krule);
int security_audit_rule_match(struct lsm_prop *prop, u32 field, u32 op,
			      void *lsmrule);
void security_audit_rule_free(void *lsmrule);

#else

static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
					   void **lsmrule, gfp_t gfp)
{
	return 0;
}

static inline int security_audit_rule_known(struct audit_krule *krule)
{
	return 0;
}

static inline int security_audit_rule_match(struct lsm_prop *prop, u32 field,
					    u32 op, void *lsmrule)
{
	return 0;
}

static inline void security_audit_rule_free(void *lsmrule)
{ }

#endif /* CONFIG_SECURITY */
#endif /* CONFIG_AUDIT */

#ifdef CONFIG_SECURITYFS

extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
					     struct dentry *parent, void *data,
					     const struct file_operations *fops);
extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
struct dentry *securityfs_create_symlink(const char *name,
					 struct dentry *parent,
					 const char *target,
					 const struct inode_operations *iops);
extern void securityfs_remove(struct dentry *dentry);

#else /* CONFIG_SECURITYFS */

static inline struct dentry *securityfs_create_dir(const char *name,
						   struct dentry *parent)
{
	return ERR_PTR(-ENODEV);
}

static inline struct dentry *securityfs_create_file(const char *name,
						    umode_t mode,
						    struct dentry *parent,
						    void *data,
						    const struct file_operations *fops)
{
	return ERR_PTR(-ENODEV);
}

static inline struct dentry *securityfs_create_symlink(const char *name,
					struct dentry *parent,
					const char *target,
					const struct inode_operations *iops)
{
	return ERR_PTR(-ENODEV);
}

static inline void securityfs_remove(struct dentry *dentry)
{}

#endif

#define securityfs_recursive_remove securityfs_remove

#ifdef CONFIG_BPF_SYSCALL
union bpf_attr;
struct bpf_map;
struct bpf_prog;
struct bpf_token;
#ifdef CONFIG_SECURITY
extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size, bool kernel);
extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
extern int security_bpf_prog(struct bpf_prog *prog);
extern int security_bpf_map_create(struct bpf_map *map, union bpf_attr *attr,
				   struct bpf_token *token, bool kernel);
extern void security_bpf_map_free(struct bpf_map *map);
extern int security_bpf_prog_load(struct bpf_prog *prog, union bpf_attr *attr,
				  struct bpf_token *token, bool kernel);
extern void security_bpf_prog_free(struct bpf_prog *prog);
extern int security_bpf_token_create(struct bpf_token *token, union bpf_attr *attr,
				     const struct path *path);
extern void security_bpf_token_free(struct bpf_token *token);
extern int security_bpf_token_cmd(const struct bpf_token *token, enum bpf_cmd cmd);
extern int security_bpf_token_capable(const struct bpf_token *token, int cap);
#else
static inline int security_bpf(int cmd, union bpf_attr *attr,
			       unsigned int size, bool kernel)
{
	return 0;
}

static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
{
	return 0;
}

static inline int security_bpf_prog(struct bpf_prog *prog)
{
	return 0;
}

static inline int security_bpf_map_create(struct bpf_map *map, union bpf_attr *attr,
					  struct bpf_token *token, bool kernel)
{
	return 0;
}

static inline void security_bpf_map_free(struct bpf_map *map)
{ }

static inline int security_bpf_prog_load(struct bpf_prog *prog, union bpf_attr *attr,
					 struct bpf_token *token, bool kernel)
{
	return 0;
}

static inline void security_bpf_prog_free(struct bpf_prog *prog)
{ }

static inline int security_bpf_token_create(struct bpf_token *token, union bpf_attr *attr,
					    const struct path *path)
{
	return 0;
}

static inline void security_bpf_token_free(struct bpf_token *token)
{ }

static inline int security_bpf_token_cmd(const struct bpf_token *token, enum bpf_cmd cmd)
{
	return 0;
}

static inline int security_bpf_token_capable(const struct bpf_token *token, int cap)
{
	return 0;
}
#endif /* CONFIG_SECURITY */
#endif /* CONFIG_BPF_SYSCALL */

#ifdef CONFIG_PERF_EVENTS
struct perf_event_attr;
struct perf_event;

#ifdef CONFIG_SECURITY
extern int security_perf_event_open(int type);
extern int security_perf_event_alloc(struct perf_event *event);
extern void security_perf_event_free(struct perf_event *event);
extern int security_perf_event_read(struct perf_event *event);
extern int security_perf_event_write(struct perf_event *event);
#else
static inline int security_perf_event_open(int type)
{
	return 0;
}

static inline int security_perf_event_alloc(struct perf_event *event)
{
	return 0;
}

static inline void security_perf_event_free(struct perf_event *event)
{
}

static inline int security_perf_event_read(struct perf_event *event)
{
	return 0;
}

static inline int security_perf_event_write(struct perf_event *event)
{
	return 0;
}
#endif /* CONFIG_SECURITY */
#endif /* CONFIG_PERF_EVENTS */

#ifdef CONFIG_IO_URING
#ifdef CONFIG_SECURITY
extern int security_uring_override_creds(const struct cred *new);
extern int security_uring_sqpoll(void);
extern int security_uring_cmd(struct io_uring_cmd *ioucmd);
extern int security_uring_allowed(void);
#else
static inline int security_uring_override_creds(const struct cred *new)
{
	return 0;
}
static inline int security_uring_sqpoll(void)
{
	return 0;
}
static inline int security_uring_cmd(struct io_uring_cmd *ioucmd)
{
	return 0;
}
static inline int security_uring_allowed(void)
{
	return 0;
}
#endif /* CONFIG_SECURITY */
#endif /* CONFIG_IO_URING */

#ifdef CONFIG_SECURITY
extern void security_initramfs_populated(void);
#else
static inline void security_initramfs_populated(void)
{
}
#endif /* CONFIG_SECURITY */

#endif /* ! __LINUX_SECURITY_H */