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/*
* Linux Security Module interfaces
*
* 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) 2015 Intel Corporation.
* Copyright (C) 2015 Casey Schaufler <casey@schaufler-ca.com>
*
* 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_LSM_HOOKS_H
#define __LINUX_LSM_HOOKS_H
#include <linux/security.h>
/* Maximum number of letters for an LSM name string */
#define SECURITY_NAME_MAX 10
#ifdef CONFIG_SECURITY
struct security_operations {
char name[SECURITY_NAME_MAX + 1];
int (*binder_set_context_mgr)(struct task_struct *mgr);
int (*binder_transaction)(struct task_struct *from,
struct task_struct *to);
int (*binder_transfer_binder)(struct task_struct *from,
struct task_struct *to);
int (*binder_transfer_file)(struct task_struct *from,
struct task_struct *to,
struct file *file);
int (*ptrace_access_check)(struct task_struct *child,
unsigned int mode);
int (*ptrace_traceme)(struct task_struct *parent);
int (*capget)(struct task_struct *target, kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted);
int (*capset)(struct cred *new, const struct cred *old,
const kernel_cap_t *effective,
const kernel_cap_t *inheritable,
const kernel_cap_t *permitted);
int (*capable)(const struct cred *cred, struct user_namespace *ns,
int cap, int audit);
int (*quotactl)(int cmds, int type, int id, struct super_block *sb);
int (*quota_on)(struct dentry *dentry);
int (*syslog)(int type);
int (*settime)(const struct timespec *ts, const struct timezone *tz);
int (*vm_enough_memory)(struct mm_struct *mm, long pages);
int (*bprm_set_creds)(struct linux_binprm *bprm);
int (*bprm_check_security)(struct linux_binprm *bprm);
int (*bprm_secureexec)(struct linux_binprm *bprm);
void (*bprm_committing_creds)(struct linux_binprm *bprm);
void (*bprm_committed_creds)(struct linux_binprm *bprm);
int (*sb_alloc_security)(struct super_block *sb);
void (*sb_free_security)(struct super_block *sb);
int (*sb_copy_data)(char *orig, char *copy);
int (*sb_remount)(struct super_block *sb, void *data);
int (*sb_kern_mount)(struct super_block *sb, int flags, void *data);
int (*sb_show_options)(struct seq_file *m, struct super_block *sb);
int (*sb_statfs)(struct dentry *dentry);
int (*sb_mount)(const char *dev_name, struct path *path,
const char *type, unsigned long flags, void *data);
int (*sb_umount)(struct vfsmount *mnt, int flags);
int (*sb_pivotroot)(struct path *old_path, struct path *new_path);
int (*sb_set_mnt_opts)(struct super_block *sb,
struct security_mnt_opts *opts,
unsigned long kern_flags,
unsigned long *set_kern_flags);
int (*sb_clone_mnt_opts)(const struct super_block *oldsb,
struct super_block *newsb);
int (*sb_parse_opts_str)(char *options, struct security_mnt_opts *opts);
int (*dentry_init_security)(struct dentry *dentry, int mode,
struct qstr *name, void **ctx,
u32 *ctxlen);
#ifdef CONFIG_SECURITY_PATH
int (*path_unlink)(struct path *dir, struct dentry *dentry);
int (*path_mkdir)(struct path *dir, struct dentry *dentry,
umode_t mode);
int (*path_rmdir)(struct path *dir, struct dentry *dentry);
int (*path_mknod)(struct path *dir, struct dentry *dentry,
umode_t mode, unsigned int dev);
int (*path_truncate)(struct path *path);
int (*path_symlink)(struct path *dir, struct dentry *dentry,
const char *old_name);
int (*path_link)(struct dentry *old_dentry, struct path *new_dir,
struct dentry *new_dentry);
int (*path_rename)(struct path *old_dir, struct dentry *old_dentry,
struct path *new_dir,
struct dentry *new_dentry);
int (*path_chmod)(struct path *path, umode_t mode);
int (*path_chown)(struct path *path, kuid_t uid, kgid_t gid);
int (*path_chroot)(struct path *path);
#endif
int (*inode_alloc_security)(struct inode *inode);
void (*inode_free_security)(struct inode *inode);
int (*inode_init_security)(struct inode *inode, struct inode *dir,
const struct qstr *qstr,
const char **name, void **value,
size_t *len);
int (*inode_create)(struct inode *dir, struct dentry *dentry,
umode_t mode);
int (*inode_link)(struct dentry *old_dentry, struct inode *dir,
struct dentry *new_dentry);
int (*inode_unlink)(struct inode *dir, struct dentry *dentry);
int (*inode_symlink)(struct inode *dir, struct dentry *dentry,
const char *old_name);
int (*inode_mkdir)(struct inode *dir, struct dentry *dentry,
umode_t mode);
int (*inode_rmdir)(struct inode *dir, struct dentry *dentry);
int (*inode_mknod)(struct inode *dir, struct dentry *dentry,
umode_t mode, dev_t dev);
int (*inode_rename)(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir,
struct dentry *new_dentry);
int (*inode_readlink)(struct dentry *dentry);
int (*inode_follow_link)(struct dentry *dentry, struct nameidata *nd);
int (*inode_permission)(struct inode *inode, int mask);
int (*inode_setattr)(struct dentry *dentry, struct iattr *attr);
int (*inode_getattr)(const struct path *path);
int (*inode_setxattr)(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags);
void (*inode_post_setxattr)(struct dentry *dentry, const char *name,
const void *value, size_t size,
int flags);
int (*inode_getxattr)(struct dentry *dentry, const char *name);
int (*inode_listxattr)(struct dentry *dentry);
int (*inode_removexattr)(struct dentry *dentry, const char *name);
int (*inode_need_killpriv)(struct dentry *dentry);
int (*inode_killpriv)(struct dentry *dentry);
int (*inode_getsecurity)(const struct inode *inode, const char *name,
void **buffer, bool alloc);
int (*inode_setsecurity)(struct inode *inode, const char *name,
const void *value, size_t size,
int flags);
int (*inode_listsecurity)(struct inode *inode, char *buffer,
size_t buffer_size);
void (*inode_getsecid)(const struct inode *inode, u32 *secid);
int (*file_permission)(struct file *file, int mask);
int (*file_alloc_security)(struct file *file);
void (*file_free_security)(struct file *file);
int (*file_ioctl)(struct file *file, unsigned int cmd,
unsigned long arg);
int (*mmap_addr)(unsigned long addr);
int (*mmap_file)(struct file *file, unsigned long reqprot,
unsigned long prot, unsigned long flags);
int (*file_mprotect)(struct vm_area_struct *vma, unsigned long reqprot,
unsigned long prot);
int (*file_lock)(struct file *file, unsigned int cmd);
int (*file_fcntl)(struct file *file, unsigned int cmd,
unsigned long arg);
void (*file_set_fowner)(struct file *file);
int (*file_send_sigiotask)(struct task_struct *tsk,
struct fown_struct *fown, int sig);
int (*file_receive)(struct file *file);
int (*file_open)(struct file *file, const struct cred *cred);
int (*task_create)(unsigned long clone_flags);
void (*task_free)(struct task_struct *task);
int (*cred_alloc_blank)(struct cred *cred, gfp_t gfp);
void (*cred_free)(struct cred *cred);
int (*cred_prepare)(struct cred *new, const struct cred *old,
gfp_t gfp);
void (*cred_transfer)(struct cred *new, const struct cred *old);
int (*kernel_act_as)(struct cred *new, u32 secid);
int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
int (*kernel_fw_from_file)(struct file *file, char *buf, size_t size);
int (*kernel_module_request)(char *kmod_name);
int (*kernel_module_from_file)(struct file *file);
int (*task_fix_setuid)(struct cred *new, const struct cred *old,
int flags);
int (*task_setpgid)(struct task_struct *p, pid_t pgid);
int (*task_getpgid)(struct task_struct *p);
int (*task_getsid)(struct task_struct *p);
void (*task_getsecid)(struct task_struct *p, u32 *secid);
int (*task_setnice)(struct task_struct *p, int nice);
int (*task_setioprio)(struct task_struct *p, int ioprio);
int (*task_getioprio)(struct task_struct *p);
int (*task_setrlimit)(struct task_struct *p, unsigned int resource,
struct rlimit *new_rlim);
int (*task_setscheduler)(struct task_struct *p);
int (*task_getscheduler)(struct task_struct *p);
int (*task_movememory)(struct task_struct *p);
int (*task_kill)(struct task_struct *p, struct siginfo *info,
int sig, u32 secid);
int (*task_wait)(struct task_struct *p);
int (*task_prctl)(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5);
void (*task_to_inode)(struct task_struct *p, struct inode *inode);
int (*ipc_permission)(struct kern_ipc_perm *ipcp, short flag);
void (*ipc_getsecid)(struct kern_ipc_perm *ipcp, u32 *secid);
int (*msg_msg_alloc_security)(struct msg_msg *msg);
void (*msg_msg_free_security)(struct msg_msg *msg);
int (*msg_queue_alloc_security)(struct msg_queue *msq);
void (*msg_queue_free_security)(struct msg_queue *msq);
int (*msg_queue_associate)(struct msg_queue *msq, int msqflg);
int (*msg_queue_msgctl)(struct msg_queue *msq, int cmd);
int (*msg_queue_msgsnd)(struct msg_queue *msq, struct msg_msg *msg,
int msqflg);
int (*msg_queue_msgrcv)(struct msg_queue *msq, struct msg_msg *msg,
struct task_struct *target, long type,
int mode);
int (*shm_alloc_security)(struct shmid_kernel *shp);
void (*shm_free_security)(struct shmid_kernel *shp);
int (*shm_associate)(struct shmid_kernel *shp, int shmflg);
int (*shm_shmctl)(struct shmid_kernel *shp, int cmd);
int (*shm_shmat)(struct shmid_kernel *shp, char __user *shmaddr,
int shmflg);
int (*sem_alloc_security)(struct sem_array *sma);
void (*sem_free_security)(struct sem_array *sma);
int (*sem_associate)(struct sem_array *sma, int semflg);
int (*sem_semctl)(struct sem_array *sma, int cmd);
int (*sem_semop)(struct sem_array *sma, struct sembuf *sops,
unsigned nsops, int alter);
int (*netlink_send)(struct sock *sk, struct sk_buff *skb);
void (*d_instantiate)(struct dentry *dentry, struct inode *inode);
int (*getprocattr)(struct task_struct *p, char *name, char **value);
int (*setprocattr)(struct task_struct *p, char *name, void *value,
size_t size);
int (*ismaclabel)(const char *name);
int (*secid_to_secctx)(u32 secid, char **secdata, u32 *seclen);
int (*secctx_to_secid)(const char *secdata, u32 seclen, u32 *secid);
void (*release_secctx)(char *secdata, u32 seclen);
int (*inode_notifysecctx)(struct inode *inode, void *ctx, u32 ctxlen);
int (*inode_setsecctx)(struct dentry *dentry, void *ctx, u32 ctxlen);
int (*inode_getsecctx)(struct inode *inode, void **ctx, u32 *ctxlen);
#ifdef CONFIG_SECURITY_NETWORK
int (*unix_stream_connect)(struct sock *sock, struct sock *other,
struct sock *newsk);
int (*unix_may_send)(struct socket *sock, struct socket *other);
int (*socket_create)(int family, int type, int protocol, int kern);
int (*socket_post_create)(struct socket *sock, int family, int type,
int protocol, int kern);
int (*socket_bind)(struct socket *sock, struct sockaddr *address,
int addrlen);
int (*socket_connect)(struct socket *sock, struct sockaddr *address,
int addrlen);
int (*socket_listen)(struct socket *sock, int backlog);
int (*socket_accept)(struct socket *sock, struct socket *newsock);
int (*socket_sendmsg)(struct socket *sock, struct msghdr *msg,
int size);
int (*socket_recvmsg)(struct socket *sock, struct msghdr *msg,
int size, int flags);
int (*socket_getsockname)(struct socket *sock);
int (*socket_getpeername)(struct socket *sock);
int (*socket_getsockopt)(struct socket *sock, int level, int optname);
int (*socket_setsockopt)(struct socket *sock, int level, int optname);
int (*socket_shutdown)(struct socket *sock, int how);
int (*socket_sock_rcv_skb)(struct sock *sk, struct sk_buff *skb);
int (*socket_getpeersec_stream)(struct socket *sock,
char __user *optval,
int __user *optlen, unsigned len);
int (*socket_getpeersec_dgram)(struct socket *sock,
struct sk_buff *skb, u32 *secid);
int (*sk_alloc_security)(struct sock *sk, int family, gfp_t priority);
void (*sk_free_security)(struct sock *sk);
void (*sk_clone_security)(const struct sock *sk, struct sock *newsk);
void (*sk_getsecid)(struct sock *sk, u32 *secid);
void (*sock_graft)(struct sock *sk, struct socket *parent);
int (*inet_conn_request)(struct sock *sk, struct sk_buff *skb,
struct request_sock *req);
void (*inet_csk_clone)(struct sock *newsk,
const struct request_sock *req);
void (*inet_conn_established)(struct sock *sk, struct sk_buff *skb);
int (*secmark_relabel_packet)(u32 secid);
void (*secmark_refcount_inc)(void);
void (*secmark_refcount_dec)(void);
void (*req_classify_flow)(const struct request_sock *req,
struct flowi *fl);
int (*tun_dev_alloc_security)(void **security);
void (*tun_dev_free_security)(void *security);
int (*tun_dev_create)(void);
int (*tun_dev_attach_queue)(void *security);
int (*tun_dev_attach)(struct sock *sk, void *security);
int (*tun_dev_open)(void *security);
#endif /* CONFIG_SECURITY_NETWORK */
#ifdef CONFIG_SECURITY_NETWORK_XFRM
int (*xfrm_policy_alloc_security)(struct xfrm_sec_ctx **ctxp,
struct xfrm_user_sec_ctx *sec_ctx,
gfp_t gfp);
int (*xfrm_policy_clone_security)(struct xfrm_sec_ctx *old_ctx,
struct xfrm_sec_ctx **new_ctx);
void (*xfrm_policy_free_security)(struct xfrm_sec_ctx *ctx);
int (*xfrm_policy_delete_security)(struct xfrm_sec_ctx *ctx);
int (*xfrm_state_alloc)(struct xfrm_state *x,
struct xfrm_user_sec_ctx *sec_ctx);
int (*xfrm_state_alloc_acquire)(struct xfrm_state *x,
struct xfrm_sec_ctx *polsec,
u32 secid);
void (*xfrm_state_free_security)(struct xfrm_state *x);
int (*xfrm_state_delete_security)(struct xfrm_state *x);
int (*xfrm_policy_lookup)(struct xfrm_sec_ctx *ctx, u32 fl_secid,
u8 dir);
int (*xfrm_state_pol_flow_match)(struct xfrm_state *x,
struct xfrm_policy *xp,
const struct flowi *fl);
int (*xfrm_decode_session)(struct sk_buff *skb, u32 *secid, int ckall);
#endif /* CONFIG_SECURITY_NETWORK_XFRM */
/* key management security hooks */
#ifdef CONFIG_KEYS
int (*key_alloc)(struct key *key, const struct cred *cred,
unsigned long flags);
void (*key_free)(struct key *key);
int (*key_permission)(key_ref_t key_ref, const struct cred *cred,
unsigned perm);
int (*key_getsecurity)(struct key *key, char **_buffer);
#endif /* CONFIG_KEYS */
#ifdef CONFIG_AUDIT
int (*audit_rule_init)(u32 field, u32 op, char *rulestr,
void **lsmrule);
int (*audit_rule_known)(struct audit_krule *krule);
int (*audit_rule_match)(u32 secid, u32 field, u32 op, void *lsmrule,
struct audit_context *actx);
void (*audit_rule_free)(void *lsmrule);
#endif /* CONFIG_AUDIT */
};
/* prototypes */
extern int security_module_enable(struct security_operations *ops);
extern int register_security(struct security_operations *ops);
extern void __init security_fixup_ops(struct security_operations *ops);
extern void reset_security_ops(void);
#endif /* CONFIG_SECURITY */
#endif /* ! __LINUX_LSM_HOOKS_H */
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