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Commit 98e828a0 authored by KP Singh's avatar KP Singh Committed by Daniel Borkmann
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security: Refactor declaration of LSM hooks 

The information about the different types of LSM hooks is scattered
in two locations i.e. union security_list_options and
struct security_hook_heads. Rather than duplicating this information
even further for BPF_PROG_TYPE_LSM, define all the hooks with the
LSM_HOOK macro in lsm_hook_defs.h which is then used to generate all
the data structures required by the LSM framework.

The LSM hooks are defined as:

  LSM_HOOK(<return_type>, <default_value>, <hook_name>, args...)

with <default_value> acccessible in security.c as:

  LSM_RET_DEFAULT(<hook_name>)
Signed-off-by: default avatarKP Singh <kpsingh@google.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Reviewed-by: default avatarBrendan Jackman <jackmanb@google.com>
Reviewed-by: default avatarFlorent Revest <revest@google.com>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarCasey Schaufler <casey@schaufler-ca.com>
Acked-by: default avatarJames Morris <jamorris@linux.microsoft.com>
Link: https://lore.kernel.org/bpf/20200329004356.27286-3-kpsingh@chromium.org
parent fc611f47
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include/linux/lsm_hook_defs.h 0 → 100644
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Linux Security Module Hook declarations.
*
* 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>
* Copyright (C) 2016 Mellanox Techonologies
* Copyright (C) 2020 Google LLC.
*/
/*
* The macro LSM_HOOK is used to define the data structures required by the
* the LSM framework using the pattern:
*
* LSM_HOOK(<return_type>, <default_value>, <hook_name>, args...)
*
* struct security_hook_heads {
* #define LSM_HOOK(RET, DEFAULT, NAME, ...) struct hlist_head NAME;
* #include <linux/lsm_hook_defs.h>
* #undef LSM_HOOK
* };
*/
LSM_HOOK(int, 0, binder_set_context_mgr, struct task_struct *mgr)
LSM_HOOK(int, 0, binder_transaction, struct task_struct *from,
struct task_struct *to)
LSM_HOOK(int, 0, binder_transfer_binder, struct task_struct *from,
struct task_struct *to)
LSM_HOOK(int, 0, binder_transfer_file, struct task_struct *from,
struct task_struct *to, struct file *file)
LSM_HOOK(int, 0, ptrace_access_check, struct task_struct *child,
unsigned int mode)
LSM_HOOK(int, 0, ptrace_traceme, struct task_struct *parent)
LSM_HOOK(int, 0, capget, struct task_struct *target, kernel_cap_t *effective,
kernel_cap_t *inheritable, kernel_cap_t *permitted)
LSM_HOOK(int, 0, capset, struct cred *new, const struct cred *old,
const kernel_cap_t *effective, const kernel_cap_t *inheritable,
const kernel_cap_t *permitted)
LSM_HOOK(int, 0, capable, const struct cred *cred, struct user_namespace *ns,
int cap, unsigned int opts)
LSM_HOOK(int, 0, quotactl, int cmds, int type, int id, struct super_block *sb)
LSM_HOOK(int, 0, quota_on, struct dentry *dentry)
LSM_HOOK(int, 0, syslog, int type)
LSM_HOOK(int, 0, settime, const struct timespec64 *ts,
const struct timezone *tz)
LSM_HOOK(int, 0, vm_enough_memory, struct mm_struct *mm, long pages)
LSM_HOOK(int, 0, bprm_set_creds, struct linux_binprm *bprm)
LSM_HOOK(int, 0, bprm_check_security, struct linux_binprm *bprm)
LSM_HOOK(void, LSM_RET_VOID, bprm_committing_creds, struct linux_binprm *bprm)
LSM_HOOK(void, LSM_RET_VOID, bprm_committed_creds, struct linux_binprm *bprm)
LSM_HOOK(int, 0, fs_context_dup, struct fs_context *fc,
struct fs_context *src_sc)
LSM_HOOK(int, 0, fs_context_parse_param, struct fs_context *fc,
struct fs_parameter *param)
LSM_HOOK(int, 0, sb_alloc_security, struct super_block *sb)
LSM_HOOK(void, LSM_RET_VOID, sb_free_security, struct super_block *sb)
LSM_HOOK(void, LSM_RET_VOID, sb_free_mnt_opts, void *mnt_opts)
LSM_HOOK(int, 0, sb_eat_lsm_opts, char *orig, void **mnt_opts)
LSM_HOOK(int, 0, sb_remount, struct super_block *sb, void *mnt_opts)
LSM_HOOK(int, 0, sb_kern_mount, struct super_block *sb)
LSM_HOOK(int, 0, sb_show_options, struct seq_file *m, struct super_block *sb)
LSM_HOOK(int, 0, sb_statfs, struct dentry *dentry)
LSM_HOOK(int, 0, sb_mount, const char *dev_name, const struct path *path,
const char *type, unsigned long flags, void *data)
LSM_HOOK(int, 0, sb_umount, struct vfsmount *mnt, int flags)
LSM_HOOK(int, 0, sb_pivotroot, const struct path *old_path,
const struct path *new_path)
LSM_HOOK(int, 0, sb_set_mnt_opts, struct super_block *sb, void *mnt_opts,
unsigned long kern_flags, unsigned long *set_kern_flags)
LSM_HOOK(int, 0, sb_clone_mnt_opts, const struct super_block *oldsb,
struct super_block *newsb, unsigned long kern_flags,
unsigned long *set_kern_flags)
LSM_HOOK(int, 0, sb_add_mnt_opt, const char *option, const char *val,
int len, void **mnt_opts)
LSM_HOOK(int, 0, move_mount, const struct path *from_path,
const struct path *to_path)
LSM_HOOK(int, 0, dentry_init_security, struct dentry *dentry,
int mode, const struct qstr *name, void **ctx, u32 *ctxlen)
LSM_HOOK(int, 0, dentry_create_files_as, struct dentry *dentry, int mode,
struct qstr *name, const struct cred *old, struct cred *new)
#ifdef CONFIG_SECURITY_PATH
LSM_HOOK(int, 0, path_unlink, const struct path *dir, struct dentry *dentry)
LSM_HOOK(int, 0, path_mkdir, const struct path *dir, struct dentry *dentry,
umode_t mode)
LSM_HOOK(int, 0, path_rmdir, const struct path *dir, struct dentry *dentry)
LSM_HOOK(int, 0, path_mknod, const struct path *dir, struct dentry *dentry,
umode_t mode, unsigned int dev)
LSM_HOOK(int, 0, path_truncate, const struct path *path)
LSM_HOOK(int, 0, path_symlink, const struct path *dir, struct dentry *dentry,
const char *old_name)
LSM_HOOK(int, 0, path_link, struct dentry *old_dentry,
const struct path *new_dir, struct dentry *new_dentry)
LSM_HOOK(int, 0, path_rename, const struct path *old_dir,
struct dentry *old_dentry, const struct path *new_dir,
struct dentry *new_dentry)
LSM_HOOK(int, 0, path_chmod, const struct path *path, umode_t mode)
LSM_HOOK(int, 0, path_chown, const struct path *path, kuid_t uid, kgid_t gid)
LSM_HOOK(int, 0, path_chroot, const struct path *path)
#endif /* CONFIG_SECURITY_PATH */
/* Needed for inode based security check */
LSM_HOOK(int, 0, path_notify, const struct path *path, u64 mask,
unsigned int obj_type)
LSM_HOOK(int, 0, inode_alloc_security, struct inode *inode)
LSM_HOOK(void, LSM_RET_VOID, inode_free_security, struct inode *inode)
LSM_HOOK(int, 0, inode_init_security, struct inode *inode,
struct inode *dir, const struct qstr *qstr, const char **name,
void **value, size_t *len)
LSM_HOOK(int, 0, inode_create, struct inode *dir, struct dentry *dentry,
umode_t mode)
LSM_HOOK(int, 0, inode_link, struct dentry *old_dentry, struct inode *dir,
struct dentry *new_dentry)
LSM_HOOK(int, 0, inode_unlink, struct inode *dir, struct dentry *dentry)
LSM_HOOK(int, 0, inode_symlink, struct inode *dir, struct dentry *dentry,
const char *old_name)
LSM_HOOK(int, 0, inode_mkdir, struct inode *dir, struct dentry *dentry,
umode_t mode)
LSM_HOOK(int, 0, inode_rmdir, struct inode *dir, struct dentry *dentry)
LSM_HOOK(int, 0, inode_mknod, struct inode *dir, struct dentry *dentry,
umode_t mode, dev_t dev)
LSM_HOOK(int, 0, inode_rename, struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
LSM_HOOK(int, 0, inode_readlink, struct dentry *dentry)
LSM_HOOK(int, 0, inode_follow_link, struct dentry *dentry, struct inode *inode,
bool rcu)
LSM_HOOK(int, 0, inode_permission, struct inode *inode, int mask)
LSM_HOOK(int, 0, inode_setattr, struct dentry *dentry, struct iattr *attr)
LSM_HOOK(int, 0, inode_getattr, const struct path *path)
LSM_HOOK(int, 0, inode_setxattr, struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
LSM_HOOK(void, LSM_RET_VOID, inode_post_setxattr, struct dentry *dentry,
const char *name, const void *value, size_t size, int flags)
LSM_HOOK(int, 0, inode_getxattr, struct dentry *dentry, const char *name)
LSM_HOOK(int, 0, inode_listxattr, struct dentry *dentry)
LSM_HOOK(int, 0, inode_removexattr, struct dentry *dentry, const char *name)
LSM_HOOK(int, 0, inode_need_killpriv, struct dentry *dentry)
LSM_HOOK(int, 0, inode_killpriv, struct dentry *dentry)
LSM_HOOK(int, -EOPNOTSUPP, inode_getsecurity, struct inode *inode,
const char *name, void **buffer, bool alloc)
LSM_HOOK(int, -EOPNOTSUPP, inode_setsecurity, struct inode *inode,
const char *name, const void *value, size_t size, int flags)
LSM_HOOK(int, 0, inode_listsecurity, struct inode *inode, char *buffer,
size_t buffer_size)
LSM_HOOK(void, LSM_RET_VOID, inode_getsecid, struct inode *inode, u32 *secid)
LSM_HOOK(int, 0, inode_copy_up, struct dentry *src, struct cred **new)
LSM_HOOK(int, 0, inode_copy_up_xattr, const char *name)
LSM_HOOK(int, 0, kernfs_init_security, struct kernfs_node *kn_dir,
struct kernfs_node *kn)
LSM_HOOK(int, 0, file_permission, struct file *file, int mask)
LSM_HOOK(int, 0, file_alloc_security, struct file *file)
LSM_HOOK(void, LSM_RET_VOID, file_free_security, struct file *file)
LSM_HOOK(int, 0, file_ioctl, struct file *file, unsigned int cmd,
unsigned long arg)
LSM_HOOK(int, 0, mmap_addr, unsigned long addr)
LSM_HOOK(int, 0, mmap_file, struct file *file, unsigned long reqprot,
unsigned long prot, unsigned long flags)
LSM_HOOK(int, 0, file_mprotect, struct vm_area_struct *vma,
unsigned long reqprot, unsigned long prot)
LSM_HOOK(int, 0, file_lock, struct file *file, unsigned int cmd)
LSM_HOOK(int, 0, file_fcntl, struct file *file, unsigned int cmd,
unsigned long arg)
LSM_HOOK(void, LSM_RET_VOID, file_set_fowner, struct file *file)
LSM_HOOK(int, 0, file_send_sigiotask, struct task_struct *tsk,
struct fown_struct *fown, int sig)
LSM_HOOK(int, 0, file_receive, struct file *file)
LSM_HOOK(int, 0, file_open, struct file *file)
LSM_HOOK(int, 0, task_alloc, struct task_struct *task,
unsigned long clone_flags)
LSM_HOOK(void, LSM_RET_VOID, task_free, struct task_struct *task)
LSM_HOOK(int, 0, cred_alloc_blank, struct cred *cred, gfp_t gfp)
LSM_HOOK(void, LSM_RET_VOID, cred_free, struct cred *cred)
LSM_HOOK(int, 0, cred_prepare, struct cred *new, const struct cred *old,
gfp_t gfp)
LSM_HOOK(void, LSM_RET_VOID, cred_transfer, struct cred *new,
const struct cred *old)
LSM_HOOK(void, LSM_RET_VOID, cred_getsecid, const struct cred *c, u32 *secid)
LSM_HOOK(int, 0, kernel_act_as, struct cred *new, u32 secid)
LSM_HOOK(int, 0, kernel_create_files_as, struct cred *new, struct inode *inode)
LSM_HOOK(int, 0, kernel_module_request, char *kmod_name)
LSM_HOOK(int, 0, kernel_load_data, enum kernel_load_data_id id)
LSM_HOOK(int, 0, kernel_read_file, struct file *file,
enum kernel_read_file_id id)
LSM_HOOK(int, 0, kernel_post_read_file, struct file *file, char *buf,
loff_t size, enum kernel_read_file_id id)
LSM_HOOK(int, 0, task_fix_setuid, struct cred *new, const struct cred *old,
int flags)
LSM_HOOK(int, 0, task_setpgid, struct task_struct *p, pid_t pgid)
LSM_HOOK(int, 0, task_getpgid, struct task_struct *p)
LSM_HOOK(int, 0, task_getsid, struct task_struct *p)
LSM_HOOK(void, LSM_RET_VOID, task_getsecid, struct task_struct *p, u32 *secid)
LSM_HOOK(int, 0, task_setnice, struct task_struct *p, int nice)
LSM_HOOK(int, 0, task_setioprio, struct task_struct *p, int ioprio)
LSM_HOOK(int, 0, task_getioprio, struct task_struct *p)
LSM_HOOK(int, 0, task_prlimit, const struct cred *cred,
const struct cred *tcred, unsigned int flags)
LSM_HOOK(int, 0, task_setrlimit, struct task_struct *p, unsigned int resource,
struct rlimit *new_rlim)
LSM_HOOK(int, 0, task_setscheduler, struct task_struct *p)
LSM_HOOK(int, 0, task_getscheduler, struct task_struct *p)
LSM_HOOK(int, 0, task_movememory, struct task_struct *p)
LSM_HOOK(int, 0, task_kill, struct task_struct *p, struct kernel_siginfo *info,
int sig, const struct cred *cred)
LSM_HOOK(int, -ENOSYS, task_prctl, int option, unsigned long arg2,
unsigned long arg3, unsigned long arg4, unsigned long arg5)
LSM_HOOK(void, LSM_RET_VOID, task_to_inode, struct task_struct *p,
struct inode *inode)
LSM_HOOK(int, 0, ipc_permission, struct kern_ipc_perm *ipcp, short flag)
LSM_HOOK(void, LSM_RET_VOID, ipc_getsecid, struct kern_ipc_perm *ipcp,
u32 *secid)
LSM_HOOK(int, 0, msg_msg_alloc_security, struct msg_msg *msg)
LSM_HOOK(void, LSM_RET_VOID, msg_msg_free_security, struct msg_msg *msg)
LSM_HOOK(int, 0, msg_queue_alloc_security, struct kern_ipc_perm *perm)
LSM_HOOK(void, LSM_RET_VOID, msg_queue_free_security,
struct kern_ipc_perm *perm)
LSM_HOOK(int, 0, msg_queue_associate, struct kern_ipc_perm *perm, int msqflg)
LSM_HOOK(int, 0, msg_queue_msgctl, struct kern_ipc_perm *perm, int cmd)
LSM_HOOK(int, 0, msg_queue_msgsnd, struct kern_ipc_perm *perm,
struct msg_msg *msg, int msqflg)
LSM_HOOK(int, 0, msg_queue_msgrcv, struct kern_ipc_perm *perm,
struct msg_msg *msg, struct task_struct *target, long type, int mode)
LSM_HOOK(int, 0, shm_alloc_security, struct kern_ipc_perm *perm)
LSM_HOOK(void, LSM_RET_VOID, shm_free_security, struct kern_ipc_perm *perm)
LSM_HOOK(int, 0, shm_associate, struct kern_ipc_perm *perm, int shmflg)
LSM_HOOK(int, 0, shm_shmctl, struct kern_ipc_perm *perm, int cmd)
LSM_HOOK(int, 0, shm_shmat, struct kern_ipc_perm *perm, char __user *shmaddr,
int shmflg)
LSM_HOOK(int, 0, sem_alloc_security, struct kern_ipc_perm *perm)
LSM_HOOK(void, LSM_RET_VOID, sem_free_security, struct kern_ipc_perm *perm)
LSM_HOOK(int, 0, sem_associate, struct kern_ipc_perm *perm, int semflg)
LSM_HOOK(int, 0, sem_semctl, struct kern_ipc_perm *perm, int cmd)
LSM_HOOK(int, 0, sem_semop, struct kern_ipc_perm *perm, struct sembuf *sops,
unsigned nsops, int alter)
LSM_HOOK(int, 0, netlink_send, struct sock *sk, struct sk_buff *skb)
LSM_HOOK(void, LSM_RET_VOID, d_instantiate, struct dentry *dentry,
struct inode *inode)
LSM_HOOK(int, -EINVAL, getprocattr, struct task_struct *p, char *name,
char **value)
LSM_HOOK(int, -EINVAL, setprocattr, const char *name, void *value, size_t size)
LSM_HOOK(int, 0, ismaclabel, const char *name)
LSM_HOOK(int, 0, secid_to_secctx, u32 secid, char **secdata,
u32 *seclen)
LSM_HOOK(int, 0, secctx_to_secid, const char *secdata, u32 seclen, u32 *secid)
LSM_HOOK(void, LSM_RET_VOID, release_secctx, char *secdata, u32 seclen)
LSM_HOOK(void, LSM_RET_VOID, inode_invalidate_secctx, struct inode *inode)
LSM_HOOK(int, 0, inode_notifysecctx, struct inode *inode, void *ctx, u32 ctxlen)
LSM_HOOK(int, 0, inode_setsecctx, struct dentry *dentry, void *ctx, u32 ctxlen)
LSM_HOOK(int, 0, inode_getsecctx, struct inode *inode, void **ctx,
u32 *ctxlen)
#ifdef CONFIG_SECURITY_NETWORK
LSM_HOOK(int, 0, unix_stream_connect, struct sock *sock, struct sock *other,
struct sock *newsk)
LSM_HOOK(int, 0, unix_may_send, struct socket *sock, struct socket *other)
LSM_HOOK(int, 0, socket_create, int family, int type, int protocol, int kern)
LSM_HOOK(int, 0, socket_post_create, struct socket *sock, int family, int type,
int protocol, int kern)
LSM_HOOK(int, 0, socket_socketpair, struct socket *socka, struct socket *sockb)
LSM_HOOK(int, 0, socket_bind, struct socket *sock, struct sockaddr *address,
int addrlen)
LSM_HOOK(int, 0, socket_connect, struct socket *sock, struct sockaddr *address,
int addrlen)
LSM_HOOK(int, 0, socket_listen, struct socket *sock, int backlog)
LSM_HOOK(int, 0, socket_accept, struct socket *sock, struct socket *newsock)
LSM_HOOK(int, 0, socket_sendmsg, struct socket *sock, struct msghdr *msg,
int size)
LSM_HOOK(int, 0, socket_recvmsg, struct socket *sock, struct msghdr *msg,
int size, int flags)
LSM_HOOK(int, 0, socket_getsockname, struct socket *sock)
LSM_HOOK(int, 0, socket_getpeername, struct socket *sock)
LSM_HOOK(int, 0, socket_getsockopt, struct socket *sock, int level, int optname)
LSM_HOOK(int, 0, socket_setsockopt, struct socket *sock, int level, int optname)
LSM_HOOK(int, 0, socket_shutdown, struct socket *sock, int how)
LSM_HOOK(int, 0, socket_sock_rcv_skb, struct sock *sk, struct sk_buff *skb)
LSM_HOOK(int, 0, socket_getpeersec_stream, struct socket *sock,
char __user *optval, int __user *optlen, unsigned len)
LSM_HOOK(int, 0, socket_getpeersec_dgram, struct socket *sock,
struct sk_buff *skb, u32 *secid)
LSM_HOOK(int, 0, sk_alloc_security, struct sock *sk, int family, gfp_t priority)
LSM_HOOK(void, LSM_RET_VOID, sk_free_security, struct sock *sk)
LSM_HOOK(void, LSM_RET_VOID, sk_clone_security, const struct sock *sk,
struct sock *newsk)
LSM_HOOK(void, LSM_RET_VOID, sk_getsecid, struct sock *sk, u32 *secid)
LSM_HOOK(void, LSM_RET_VOID, sock_graft, struct sock *sk, struct socket *parent)
LSM_HOOK(int, 0, inet_conn_request, struct sock *sk, struct sk_buff *skb,
struct request_sock *req)
LSM_HOOK(void, LSM_RET_VOID, inet_csk_clone, struct sock *newsk,
const struct request_sock *req)
LSM_HOOK(void, LSM_RET_VOID, inet_conn_established, struct sock *sk,
struct sk_buff *skb)
LSM_HOOK(int, 0, secmark_relabel_packet, u32 secid)
LSM_HOOK(void, LSM_RET_VOID, secmark_refcount_inc, void)
LSM_HOOK(void, LSM_RET_VOID, secmark_refcount_dec, void)
LSM_HOOK(void, LSM_RET_VOID, req_classify_flow, const struct request_sock *req,
struct flowi *fl)
LSM_HOOK(int, 0, tun_dev_alloc_security, void **security)
LSM_HOOK(void, LSM_RET_VOID, tun_dev_free_security, void *security)
LSM_HOOK(int, 0, tun_dev_create, void)
LSM_HOOK(int, 0, tun_dev_attach_queue, void *security)
LSM_HOOK(int, 0, tun_dev_attach, struct sock *sk, void *security)
LSM_HOOK(int, 0, tun_dev_open, void *security)
LSM_HOOK(int, 0, sctp_assoc_request, struct sctp_endpoint *ep,
struct sk_buff *skb)
LSM_HOOK(int, 0, sctp_bind_connect, struct sock *sk, int optname,
struct sockaddr *address, int addrlen)
LSM_HOOK(void, LSM_RET_VOID, sctp_sk_clone, struct sctp_endpoint *ep,
struct sock *sk, struct sock *newsk)
#endif /* CONFIG_SECURITY_NETWORK */
#ifdef CONFIG_SECURITY_INFINIBAND
LSM_HOOK(int, 0, ib_pkey_access, void *sec, u64 subnet_prefix, u16 pkey)
LSM_HOOK(int, 0, ib_endport_manage_subnet, void *sec, const char *dev_name,
u8 port_num)
LSM_HOOK(int, 0, ib_alloc_security, void **sec)
LSM_HOOK(void, LSM_RET_VOID, ib_free_security, void *sec)
#endif /* CONFIG_SECURITY_INFINIBAND */
#ifdef CONFIG_SECURITY_NETWORK_XFRM
LSM_HOOK(int, 0, xfrm_policy_alloc_security, struct xfrm_sec_ctx **ctxp,
struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp)
LSM_HOOK(int, 0, xfrm_policy_clone_security, struct xfrm_sec_ctx *old_ctx,
struct xfrm_sec_ctx **new_ctx)
LSM_HOOK(void, LSM_RET_VOID, xfrm_policy_free_security,
struct xfrm_sec_ctx *ctx)
LSM_HOOK(int, 0, xfrm_policy_delete_security, struct xfrm_sec_ctx *ctx)
LSM_HOOK(int, 0, xfrm_state_alloc, struct xfrm_state *x,
struct xfrm_user_sec_ctx *sec_ctx)
LSM_HOOK(int, 0, xfrm_state_alloc_acquire, struct xfrm_state *x,
struct xfrm_sec_ctx *polsec, u32 secid)
LSM_HOOK(void, LSM_RET_VOID, xfrm_state_free_security, struct xfrm_state *x)
LSM_HOOK(int, 0, xfrm_state_delete_security, struct xfrm_state *x)
LSM_HOOK(int, 0, xfrm_policy_lookup, struct xfrm_sec_ctx *ctx, u32 fl_secid,
u8 dir)
LSM_HOOK(int, 1, xfrm_state_pol_flow_match, struct xfrm_state *x,
struct xfrm_policy *xp, const struct flowi *fl)
LSM_HOOK(int, 0, xfrm_decode_session, struct sk_buff *skb, u32 *secid,
int ckall)
#endif /* CONFIG_SECURITY_NETWORK_XFRM */
/* key management security hooks */
#ifdef CONFIG_KEYS
LSM_HOOK(int, 0, key_alloc, struct key *key, const struct cred *cred,
unsigned long flags)
LSM_HOOK(void, LSM_RET_VOID, key_free, struct key *key)
LSM_HOOK(int, 0, key_permission, key_ref_t key_ref, const struct cred *cred,
unsigned perm)
LSM_HOOK(int, 0, key_getsecurity, struct key *key, char **_buffer)
#endif /* CONFIG_KEYS */
#ifdef CONFIG_AUDIT
LSM_HOOK(int, 0, audit_rule_init, u32 field, u32 op, char *rulestr,
void **lsmrule)
LSM_HOOK(int, 0, audit_rule_known, struct audit_krule *krule)
LSM_HOOK(int, 0, audit_rule_match, u32 secid, u32 field, u32 op, void *lsmrule)
LSM_HOOK(void, LSM_RET_VOID, audit_rule_free, void *lsmrule)
#endif /* CONFIG_AUDIT */
#ifdef CONFIG_BPF_SYSCALL
LSM_HOOK(int, 0, bpf, int cmd, union bpf_attr *attr, unsigned int size)
LSM_HOOK(int, 0, bpf_map, struct bpf_map *map, fmode_t fmode)
LSM_HOOK(int, 0, bpf_prog, struct bpf_prog *prog)
LSM_HOOK(int, 0, bpf_map_alloc_security, struct bpf_map *map)
LSM_HOOK(void, LSM_RET_VOID, bpf_map_free_security, struct bpf_map *map)
LSM_HOOK(int, 0, bpf_prog_alloc_security, struct bpf_prog_aux *aux)
LSM_HOOK(void, LSM_RET_VOID, bpf_prog_free_security, struct bpf_prog_aux *aux)
#endif /* CONFIG_BPF_SYSCALL */
LSM_HOOK(int, 0, locked_down, enum lockdown_reason what)
#ifdef CONFIG_PERF_EVENTS
LSM_HOOK(int, 0, perf_event_open, struct perf_event_attr *attr, int type)
LSM_HOOK(int, 0, perf_event_alloc, struct perf_event *event)
LSM_HOOK(void, LSM_RET_VOID, perf_event_free, struct perf_event *event)
LSM_HOOK(int, 0, perf_event_read, struct perf_event *event)
LSM_HOOK(int, 0, perf_event_write, struct perf_event *event)
#endif /* CONFIG_PERF_EVENTS */
include/linux/lsm_hooks.h
View file @ 98e828a0
...@@ -1456,625 +1456,15 @@ ...@@ -1456,625 +1456,15 @@
* @what: kernel feature being accessed * @what: kernel feature being accessed
*/ */
union security_list_options { union security_list_options {
int (*binder_set_context_mgr)(struct task_struct *mgr); #define LSM_HOOK(RET, DEFAULT, NAME, ...) RET (*NAME)(__VA_ARGS__);
int (*binder_transaction)(struct task_struct *from, #include "lsm_hook_defs.h"
struct task_struct *to); #undef LSM_HOOK
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,
unsigned int opts);
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 timespec64 *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);
void (*bprm_committing_creds)(struct linux_binprm *bprm);
void (*bprm_committed_creds)(struct linux_binprm *bprm);
int (*fs_context_dup)(struct fs_context *fc, struct fs_context *src_sc);
int (*fs_context_parse_param)(struct fs_context *fc, struct fs_parameter *param);
int (*sb_alloc_security)(struct super_block *sb);
void (*sb_free_security)(struct super_block *sb);
void (*sb_free_mnt_opts)(void *mnt_opts);
int (*sb_eat_lsm_opts)(char *orig, void **mnt_opts);
int (*sb_remount)(struct super_block *sb, void *mnt_opts);
int (*sb_kern_mount)(struct super_block *sb);
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, const struct path *path,
const char *type, unsigned long flags, void *data);
int (*sb_umount)(struct vfsmount *mnt, int flags);
int (*sb_pivotroot)(const struct path *old_path, const struct path *new_path);
int (*sb_set_mnt_opts)(struct super_block *sb,
void *mnt_opts,
unsigned long kern_flags,
unsigned long *set_kern_flags);
int (*sb_clone_mnt_opts)(const struct super_block *oldsb,
struct super_block *newsb,
unsigned long kern_flags,
unsigned long *set_kern_flags);
int (*sb_add_mnt_opt)(const char *option, const char *val, int len,
void **mnt_opts);
int (*move_mount)(const struct path *from_path, const struct path *to_path);
int (*dentry_init_security)(struct dentry *dentry, int mode,
const struct qstr *name, void **ctx,
u32 *ctxlen);
int (*dentry_create_files_as)(struct dentry *dentry, int mode,
struct qstr *name,
const struct cred *old,
struct cred *new);
#ifdef CONFIG_SECURITY_PATH
int (*path_unlink)(const struct path *dir, struct dentry *dentry);
int (*path_mkdir)(const struct path *dir, struct dentry *dentry,
umode_t mode);
int (*path_rmdir)(const struct path *dir, struct dentry *dentry);
int (*path_mknod)(const struct path *dir, struct dentry *dentry,
umode_t mode, unsigned int dev);
int (*path_truncate)(const struct path *path);
int (*path_symlink)(const struct path *dir, struct dentry *dentry,
const char *old_name);
int (*path_link)(struct dentry *old_dentry, const struct path *new_dir,
struct dentry *new_dentry);
int (*path_rename)(const struct path *old_dir, struct dentry *old_dentry,
const struct path *new_dir,
struct dentry *new_dentry);
int (*path_chmod)(const struct path *path, umode_t mode);
int (*path_chown)(const struct path *path, kuid_t uid, kgid_t gid);
int (*path_chroot)(const struct path *path);
#endif
/* Needed for inode based security check */
int (*path_notify)(const struct path *path, u64 mask,
unsigned int obj_type);
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 inode *inode,
bool rcu);
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)(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)(struct inode *inode, u32 *secid);
int (*inode_copy_up)(struct dentry *src, struct cred **new);
int (*inode_copy_up_xattr)(const char *name);
int (*kernfs_init_security)(struct kernfs_node *kn_dir,
struct kernfs_node *kn);
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);
int (*task_alloc)(struct task_struct *task, 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);
void (*cred_getsecid)(const struct cred *c, u32 *secid);
int (*kernel_act_as)(struct cred *new, u32 secid);
int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
int (*kernel_module_request)(char *kmod_name);
int (*kernel_load_data)(enum kernel_load_data_id id);
int (*kernel_read_file)(struct file *file, enum kernel_read_file_id id);
int (*kernel_post_read_file)(struct file *file, char *buf, loff_t size,
enum kernel_read_file_id id);
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_prlimit)(const struct cred *cred, const struct cred *tcred,
unsigned int flags);
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 kernel_siginfo *info,
int sig, const struct cred *cred);
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 kern_ipc_perm *perm);
void (*msg_queue_free_security)(struct kern_ipc_perm *perm);
int (*msg_queue_associate)(struct kern_ipc_perm *perm, int msqflg);
int (*msg_queue_msgctl)(struct kern_ipc_perm *perm, int cmd);
int (*msg_queue_msgsnd)(struct kern_ipc_perm *perm, struct msg_msg *msg,
int msqflg);
int (*msg_queue_msgrcv)(struct kern_ipc_perm *perm, struct msg_msg *msg,
struct task_struct *target, long type,
int mode);
int (*shm_alloc_security)(struct kern_ipc_perm *perm);
void (*shm_free_security)(struct kern_ipc_perm *perm);
int (*shm_associate)(struct kern_ipc_perm *perm, int shmflg);
int (*shm_shmctl)(struct kern_ipc_perm *perm, int cmd);
int (*shm_shmat)(struct kern_ipc_perm *perm, char __user *shmaddr,
int shmflg);
int (*sem_alloc_security)(struct kern_ipc_perm *perm);
void (*sem_free_security)(struct kern_ipc_perm *perm);
int (*sem_associate)(struct kern_ipc_perm *perm, int semflg);
int (*sem_semctl)(struct kern_ipc_perm *perm, int cmd);
int (*sem_semop)(struct kern_ipc_perm *perm, 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)(const 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);
void (*inode_invalidate_secctx)(struct inode *inode);
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_socketpair)(struct socket *socka, struct socket *sockb);
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);
int (*sctp_assoc_request)(struct sctp_endpoint *ep,
struct sk_buff *skb);
int (*sctp_bind_connect)(struct sock *sk, int optname,
struct sockaddr *address, int addrlen);
void (*sctp_sk_clone)(struct sctp_endpoint *ep, struct sock *sk,
struct sock *newsk);
#endif /* CONFIG_SECURITY_NETWORK */
#ifdef CONFIG_SECURITY_INFINIBAND
int (*ib_pkey_access)(void *sec, u64 subnet_prefix, u16 pkey);
int (*ib_endport_manage_subnet)(void *sec, const char *dev_name,
u8 port_num);
int (*ib_alloc_security)(void **sec);
void (*ib_free_security)(void *sec);
#endif /* CONFIG_SECURITY_INFINIBAND */
#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);
void (*audit_rule_free)(void *lsmrule);
#endif /* CONFIG_AUDIT */
#ifdef CONFIG_BPF_SYSCALL
int (*bpf)(int cmd, union bpf_attr *attr,
unsigned int size);
int (*bpf_map)(struct bpf_map *map, fmode_t fmode);
int (*bpf_prog)(struct bpf_prog *prog);
int (*bpf_map_alloc_security)(struct bpf_map *map);
void (*bpf_map_free_security)(struct bpf_map *map);
int (*bpf_prog_alloc_security)(struct bpf_prog_aux *aux);
void (*bpf_prog_free_security)(struct bpf_prog_aux *aux);
#endif /* CONFIG_BPF_SYSCALL */
int (*locked_down)(enum lockdown_reason what);
#ifdef CONFIG_PERF_EVENTS
int (*perf_event_open)(struct perf_event_attr *attr, int type);
int (*perf_event_alloc)(struct perf_event *event);
void (*perf_event_free)(struct perf_event *event);
int (*perf_event_read)(struct perf_event *event);
int (*perf_event_write)(struct perf_event *event);
#endif
}; };
struct security_hook_heads { struct security_hook_heads {
struct hlist_head binder_set_context_mgr; #define LSM_HOOK(RET, DEFAULT, NAME, ...) struct hlist_head NAME;
struct hlist_head binder_transaction; #include "lsm_hook_defs.h"
struct hlist_head binder_transfer_binder; #undef LSM_HOOK
struct hlist_head binder_transfer_file;
struct hlist_head ptrace_access_check;
struct hlist_head ptrace_traceme;
struct hlist_head capget;
struct hlist_head capset;
struct hlist_head capable;
struct hlist_head quotactl;
struct hlist_head quota_on;
struct hlist_head syslog;
struct hlist_head settime;
struct hlist_head vm_enough_memory;
struct hlist_head bprm_set_creds;
struct hlist_head bprm_check_security;
struct hlist_head bprm_committing_creds;
struct hlist_head bprm_committed_creds;
struct hlist_head fs_context_dup;
struct hlist_head fs_context_parse_param;
struct hlist_head sb_alloc_security;
struct hlist_head sb_free_security;
struct hlist_head sb_free_mnt_opts;
struct hlist_head sb_eat_lsm_opts;
struct hlist_head sb_remount;
struct hlist_head sb_kern_mount;
struct hlist_head sb_show_options;
struct hlist_head sb_statfs;
struct hlist_head sb_mount;
struct hlist_head sb_umount;
struct hlist_head sb_pivotroot;
struct hlist_head sb_set_mnt_opts;
struct hlist_head sb_clone_mnt_opts;
struct hlist_head sb_add_mnt_opt;
struct hlist_head move_mount;
struct hlist_head dentry_init_security;
struct hlist_head dentry_create_files_as;
#ifdef CONFIG_SECURITY_PATH
struct hlist_head path_unlink;
struct hlist_head path_mkdir;
struct hlist_head path_rmdir;
struct hlist_head path_mknod;
struct hlist_head path_truncate;
struct hlist_head path_symlink;
struct hlist_head path_link;
struct hlist_head path_rename;
struct hlist_head path_chmod;
struct hlist_head path_chown;
struct hlist_head path_chroot;
#endif
/* Needed for inode based modules as well */
struct hlist_head path_notify;
struct hlist_head inode_alloc_security;
struct hlist_head inode_free_security;
struct hlist_head inode_init_security;
struct hlist_head inode_create;
struct hlist_head inode_link;
struct hlist_head inode_unlink;
struct hlist_head inode_symlink;
struct hlist_head inode_mkdir;
struct hlist_head inode_rmdir;
struct hlist_head inode_mknod;
struct hlist_head inode_rename;
struct hlist_head inode_readlink;
struct hlist_head inode_follow_link;
struct hlist_head inode_permission;
struct hlist_head inode_setattr;
struct hlist_head inode_getattr;
struct hlist_head inode_setxattr;
struct hlist_head inode_post_setxattr;
struct hlist_head inode_getxattr;
struct hlist_head inode_listxattr;
struct hlist_head inode_removexattr;
struct hlist_head inode_need_killpriv;
struct hlist_head inode_killpriv;
struct hlist_head inode_getsecurity;
struct hlist_head inode_setsecurity;
struct hlist_head inode_listsecurity;
struct hlist_head inode_getsecid;
struct hlist_head inode_copy_up;
struct hlist_head inode_copy_up_xattr;
struct hlist_head kernfs_init_security;
struct hlist_head file_permission;
struct hlist_head file_alloc_security;
struct hlist_head file_free_security;
struct hlist_head file_ioctl;
struct hlist_head mmap_addr;
struct hlist_head mmap_file;
struct hlist_head file_mprotect;
struct hlist_head file_lock;
struct hlist_head file_fcntl;
struct hlist_head file_set_fowner;
struct hlist_head file_send_sigiotask;
struct hlist_head file_receive;
struct hlist_head file_open;
struct hlist_head task_alloc;
struct hlist_head task_free;
struct hlist_head cred_alloc_blank;
struct hlist_head cred_free;
struct hlist_head cred_prepare;
struct hlist_head cred_transfer;
struct hlist_head cred_getsecid;
struct hlist_head kernel_act_as;
struct hlist_head kernel_create_files_as;
struct hlist_head kernel_load_data;
struct hlist_head kernel_read_file;
struct hlist_head kernel_post_read_file;
struct hlist_head kernel_module_request;
struct hlist_head task_fix_setuid;
struct hlist_head task_setpgid;
struct hlist_head task_getpgid;
struct hlist_head task_getsid;
struct hlist_head task_getsecid;
struct hlist_head task_setnice;
struct hlist_head task_setioprio;
struct hlist_head task_getioprio;
struct hlist_head task_prlimit;
struct hlist_head task_setrlimit;
struct hlist_head task_setscheduler;
struct hlist_head task_getscheduler;
struct hlist_head task_movememory;
struct hlist_head task_kill;
struct hlist_head task_prctl;
struct hlist_head task_to_inode;
struct hlist_head ipc_permission;
struct hlist_head ipc_getsecid;
struct hlist_head msg_msg_alloc_security;
struct hlist_head msg_msg_free_security;
struct hlist_head msg_queue_alloc_security;
struct hlist_head msg_queue_free_security;
struct hlist_head msg_queue_associate;
struct hlist_head msg_queue_msgctl;
struct hlist_head msg_queue_msgsnd;
struct hlist_head msg_queue_msgrcv;
struct hlist_head shm_alloc_security;
struct hlist_head shm_free_security;
struct hlist_head shm_associate;
struct hlist_head shm_shmctl;
struct hlist_head shm_shmat;
struct hlist_head sem_alloc_security;
struct hlist_head sem_free_security;
struct hlist_head sem_associate;
struct hlist_head sem_semctl;
struct hlist_head sem_semop;
struct hlist_head netlink_send;
struct hlist_head d_instantiate;
struct hlist_head getprocattr;
struct hlist_head setprocattr;
struct hlist_head ismaclabel;
struct hlist_head secid_to_secctx;
struct hlist_head secctx_to_secid;
struct hlist_head release_secctx;
struct hlist_head inode_invalidate_secctx;
struct hlist_head inode_notifysecctx;
struct hlist_head inode_setsecctx;
struct hlist_head inode_getsecctx;
#ifdef CONFIG_SECURITY_NETWORK
struct hlist_head unix_stream_connect;
struct hlist_head unix_may_send;
struct hlist_head socket_create;
struct hlist_head socket_post_create;
struct hlist_head socket_socketpair;
struct hlist_head socket_bind;
struct hlist_head socket_connect;
struct hlist_head socket_listen;
struct hlist_head socket_accept;
struct hlist_head socket_sendmsg;
struct hlist_head socket_recvmsg;
struct hlist_head socket_getsockname;
struct hlist_head socket_getpeername;
struct hlist_head socket_getsockopt;
struct hlist_head socket_setsockopt;
struct hlist_head socket_shutdown;
struct hlist_head socket_sock_rcv_skb;
struct hlist_head socket_getpeersec_stream;
struct hlist_head socket_getpeersec_dgram;
struct hlist_head sk_alloc_security;
struct hlist_head sk_free_security;
struct hlist_head sk_clone_security;
struct hlist_head sk_getsecid;
struct hlist_head sock_graft;
struct hlist_head inet_conn_request;
struct hlist_head inet_csk_clone;
struct hlist_head inet_conn_established;
struct hlist_head secmark_relabel_packet;
struct hlist_head secmark_refcount_inc;
struct hlist_head secmark_refcount_dec;
struct hlist_head req_classify_flow;
struct hlist_head tun_dev_alloc_security;
struct hlist_head tun_dev_free_security;
struct hlist_head tun_dev_create;
struct hlist_head tun_dev_attach_queue;
struct hlist_head tun_dev_attach;
struct hlist_head tun_dev_open;
struct hlist_head sctp_assoc_request;
struct hlist_head sctp_bind_connect;
struct hlist_head sctp_sk_clone;
#endif /* CONFIG_SECURITY_NETWORK */
#ifdef CONFIG_SECURITY_INFINIBAND
struct hlist_head ib_pkey_access;
struct hlist_head ib_endport_manage_subnet;
struct hlist_head ib_alloc_security;
struct hlist_head ib_free_security;
#endif /* CONFIG_SECURITY_INFINIBAND */
#ifdef CONFIG_SECURITY_NETWORK_XFRM
struct hlist_head xfrm_policy_alloc_security;
struct hlist_head xfrm_policy_clone_security;
struct hlist_head xfrm_policy_free_security;
struct hlist_head xfrm_policy_delete_security;
struct hlist_head xfrm_state_alloc;
struct hlist_head xfrm_state_alloc_acquire;
struct hlist_head xfrm_state_free_security;
struct hlist_head xfrm_state_delete_security;
struct hlist_head xfrm_policy_lookup;
struct hlist_head xfrm_state_pol_flow_match;
struct hlist_head xfrm_decode_session;
#endif /* CONFIG_SECURITY_NETWORK_XFRM */
#ifdef CONFIG_KEYS
struct hlist_head key_alloc;
struct hlist_head key_free;
struct hlist_head key_permission;
struct hlist_head key_getsecurity;
#endif /* CONFIG_KEYS */
#ifdef CONFIG_AUDIT
struct hlist_head audit_rule_init;
struct hlist_head audit_rule_known;
struct hlist_head audit_rule_match;
struct hlist_head audit_rule_free;
#endif /* CONFIG_AUDIT */
#ifdef CONFIG_BPF_SYSCALL
struct hlist_head bpf;
struct hlist_head bpf_map;
struct hlist_head bpf_prog;
struct hlist_head bpf_map_alloc_security;
struct hlist_head bpf_map_free_security;
struct hlist_head bpf_prog_alloc_security;
struct hlist_head bpf_prog_free_security;
#endif /* CONFIG_BPF_SYSCALL */
struct hlist_head locked_down;
#ifdef CONFIG_PERF_EVENTS
struct hlist_head perf_event_open;
struct hlist_head perf_event_alloc;
struct hlist_head perf_event_free;
struct hlist_head perf_event_read;
struct hlist_head perf_event_write;
#endif
} __randomize_layout; } __randomize_layout;
/* /*
...@@ -2100,6 +1490,12 @@ struct lsm_blob_sizes { ...@@ -2100,6 +1490,12 @@ struct lsm_blob_sizes {
int lbs_task; int lbs_task;
}; };
/*
* LSM_RET_VOID is used as the default value in LSM_HOOK definitions for void
* LSM hooks (in include/linux/lsm_hook_defs.h).
*/
#define LSM_RET_VOID ((void) 0)
/* /*
* Initializing a security_hook_list structure takes * Initializing a security_hook_list structure takes
* up a lot of space in a source file. This macro takes * up a lot of space in a source file. This macro takes
......
security/security.c
View file @ 98e828a0
...@@ -668,6 +668,25 @@ static void __init lsm_early_task(struct task_struct *task) ...@@ -668,6 +668,25 @@ static void __init lsm_early_task(struct task_struct *task)
panic("%s: Early task alloc failed.\n", __func__); panic("%s: Early task alloc failed.\n", __func__);
} }
/*
* The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
* can be accessed with:
*
* LSM_RET_DEFAULT(<hook_name>)
*
* The macros below define static constants for the default value of each
* LSM hook.
*/
#define LSM_RET_DEFAULT(NAME) (NAME##_default)
#define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
#define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
#define LSM_HOOK(RET, DEFAULT, NAME, ...) \
DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
#include <linux/lsm_hook_defs.h>
#undef LSM_HOOK
/* /*
* Hook list operation macros. * Hook list operation macros.
* *
...@@ -1338,16 +1357,16 @@ int security_inode_getsecurity(struct inode *inode, const char *name, void **buf ...@@ -1338,16 +1357,16 @@ int security_inode_getsecurity(struct inode *inode, const char *name, void **buf
int rc; int rc;
if (unlikely(IS_PRIVATE(inode))) if (unlikely(IS_PRIVATE(inode)))
return -EOPNOTSUPP; return LSM_RET_DEFAULT(inode_getsecurity);
/* /*
* Only one module will provide an attribute with a given name. * Only one module will provide an attribute with a given name.
*/ */
hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
if (rc != -EOPNOTSUPP) if (rc != LSM_RET_DEFAULT(inode_getsecurity))
return rc; return rc;
} }
return -EOPNOTSUPP; return LSM_RET_DEFAULT(inode_getsecurity);
} }
int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
...@@ -1356,17 +1375,17 @@ int security_inode_setsecurity(struct inode *inode, const char *name, const void ...@@ -1356,17 +1375,17 @@ int security_inode_setsecurity(struct inode *inode, const char *name, const void
int rc; int rc;
if (unlikely(IS_PRIVATE(inode))) if (unlikely(IS_PRIVATE(inode)))
return -EOPNOTSUPP; return LSM_RET_DEFAULT(inode_setsecurity);
/* /*
* Only one module will provide an attribute with a given name. * Only one module will provide an attribute with a given name.
*/ */
hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
rc = hp->hook.inode_setsecurity(inode, name, value, size, rc = hp->hook.inode_setsecurity(inode, name, value, size,
flags); flags);
if (rc != -EOPNOTSUPP) if (rc != LSM_RET_DEFAULT(inode_setsecurity))
return rc; return rc;
} }
return -EOPNOTSUPP; return LSM_RET_DEFAULT(inode_setsecurity);
} }
int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
...@@ -1740,12 +1759,12 @@ int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, ...@@ -1740,12 +1759,12 @@ int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5) unsigned long arg4, unsigned long arg5)
{ {
int thisrc; int thisrc;
int rc = -ENOSYS; int rc = LSM_RET_DEFAULT(task_prctl);
struct security_hook_list *hp; struct security_hook_list *hp;
hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
if (thisrc != -ENOSYS) { if (thisrc != LSM_RET_DEFAULT(task_prctl)) {
rc = thisrc; rc = thisrc;
if (thisrc != 0) if (thisrc != 0)
break; break;
...@@ -1917,7 +1936,7 @@ int security_getprocattr(struct task_struct *p, const char *lsm, char *name, ...@@ -1917,7 +1936,7 @@ int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
continue; continue;
return hp->hook.getprocattr(p, name, value); return hp->hook.getprocattr(p, name, value);
} }
return -EINVAL; return LSM_RET_DEFAULT(getprocattr);
} }
int security_setprocattr(const char *lsm, const char *name, void *value, int security_setprocattr(const char *lsm, const char *name, void *value,
...@@ -1930,7 +1949,7 @@ int security_setprocattr(const char *lsm, const char *name, void *value, ...@@ -1930,7 +1949,7 @@ int security_setprocattr(const char *lsm, const char *name, void *value,
continue; continue;
return hp->hook.setprocattr(name, value, size); return hp->hook.setprocattr(name, value, size);
} }
return -EINVAL; return LSM_RET_DEFAULT(setprocattr);
} }
int security_netlink_send(struct sock *sk, struct sk_buff *skb) int security_netlink_send(struct sock *sk, struct sk_buff *skb)
...@@ -2315,7 +2334,7 @@ int security_xfrm_state_pol_flow_match(struct xfrm_state *x, ...@@ -2315,7 +2334,7 @@ int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
const struct flowi *fl) const struct flowi *fl)
{ {
struct security_hook_list *hp; struct security_hook_list *hp;
int rc = 1; int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match);
/* /*
* Since this function is expected to return 0 or 1, the judgment * Since this function is expected to return 0 or 1, the judgment
......
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