9b3e43a747
Why would linux/security.h need forward declarations for nfsctl_arg and swap_info_struct? It's hard to imagine: remove them. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2801 lines
103 KiB
C
2801 lines
103 KiB
C
/*
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* Linux Security plug
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*
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* Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
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* Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
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* Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
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* Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
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* Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Due to this file being licensed under the GPL there is controversy over
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* whether this permits you to write a module that #includes this file
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* without placing your module under the GPL. Please consult a lawyer for
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* advice before doing this.
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*
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*/
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#ifndef __LINUX_SECURITY_H
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#define __LINUX_SECURITY_H
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#include <linux/fs.h>
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#include <linux/binfmts.h>
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#include <linux/signal.h>
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#include <linux/resource.h>
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#include <linux/sem.h>
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#include <linux/shm.h>
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#include <linux/msg.h>
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#include <linux/sched.h>
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#include <linux/key.h>
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#include <linux/xfrm.h>
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#include <net/flow.h>
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/* Maximum number of letters for an LSM name string */
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#define SECURITY_NAME_MAX 10
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struct ctl_table;
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struct audit_krule;
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/*
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* These functions are in security/capability.c and are used
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* as the default capabilities functions
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*/
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extern int cap_capable(struct task_struct *tsk, int cap);
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extern int cap_settime(struct timespec *ts, struct timezone *tz);
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extern int cap_ptrace(struct task_struct *parent, struct task_struct *child,
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unsigned int mode);
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extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
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extern int cap_capset_check(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
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extern void cap_capset_set(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
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extern int cap_bprm_set_security(struct linux_binprm *bprm);
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extern void cap_bprm_apply_creds(struct linux_binprm *bprm, int unsafe);
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extern int cap_bprm_secureexec(struct linux_binprm *bprm);
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extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
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const void *value, size_t size, int flags);
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extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
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extern int cap_inode_need_killpriv(struct dentry *dentry);
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extern int cap_inode_killpriv(struct dentry *dentry);
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extern int cap_task_post_setuid(uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags);
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extern void cap_task_reparent_to_init(struct task_struct *p);
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extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
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unsigned long arg4, unsigned long arg5, long *rc_p);
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extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
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extern int cap_task_setioprio(struct task_struct *p, int ioprio);
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extern int cap_task_setnice(struct task_struct *p, int nice);
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extern int cap_syslog(int type);
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extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
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struct msghdr;
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struct sk_buff;
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struct sock;
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struct sockaddr;
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struct socket;
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struct flowi;
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struct dst_entry;
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struct xfrm_selector;
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struct xfrm_policy;
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struct xfrm_state;
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struct xfrm_user_sec_ctx;
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struct seq_file;
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extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
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extern int cap_netlink_recv(struct sk_buff *skb, int cap);
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extern unsigned long mmap_min_addr;
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/*
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* Values used in the task_security_ops calls
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*/
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/* setuid or setgid, id0 == uid or gid */
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#define LSM_SETID_ID 1
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/* setreuid or setregid, id0 == real, id1 == eff */
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#define LSM_SETID_RE 2
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/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
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#define LSM_SETID_RES 4
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/* setfsuid or setfsgid, id0 == fsuid or fsgid */
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#define LSM_SETID_FS 8
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/* forward declares to avoid warnings */
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struct sched_param;
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struct request_sock;
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/* bprm_apply_creds unsafe reasons */
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#define LSM_UNSAFE_SHARE 1
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#define LSM_UNSAFE_PTRACE 2
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#define LSM_UNSAFE_PTRACE_CAP 4
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#ifdef CONFIG_SECURITY
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struct security_mnt_opts {
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char **mnt_opts;
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int *mnt_opts_flags;
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int num_mnt_opts;
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};
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static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
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{
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opts->mnt_opts = NULL;
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opts->mnt_opts_flags = NULL;
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opts->num_mnt_opts = 0;
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}
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static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
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{
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int i;
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if (opts->mnt_opts)
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for (i = 0; i < opts->num_mnt_opts; i++)
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kfree(opts->mnt_opts[i]);
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kfree(opts->mnt_opts);
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opts->mnt_opts = NULL;
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kfree(opts->mnt_opts_flags);
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opts->mnt_opts_flags = NULL;
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opts->num_mnt_opts = 0;
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}
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/**
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* struct security_operations - main security structure
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*
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* Security module identifier.
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*
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* @name:
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* A string that acts as a unique identifeir for the LSM with max number
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* of characters = SECURITY_NAME_MAX.
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*
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* Security hooks for program execution operations.
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*
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* @bprm_alloc_security:
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* Allocate and attach a security structure to the @bprm->security field.
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* The security field is initialized to NULL when the bprm structure is
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* allocated.
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* @bprm contains the linux_binprm structure to be modified.
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* Return 0 if operation was successful.
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* @bprm_free_security:
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* @bprm contains the linux_binprm structure to be modified.
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* Deallocate and clear the @bprm->security field.
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* @bprm_apply_creds:
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* Compute and set the security attributes of a process being transformed
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* by an execve operation based on the old attributes (current->security)
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* and the information saved in @bprm->security by the set_security hook.
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* Since this hook function (and its caller) are void, this hook can not
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* return an error. However, it can leave the security attributes of the
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* process unchanged if an access failure occurs at this point.
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* bprm_apply_creds is called under task_lock. @unsafe indicates various
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* reasons why it may be unsafe to change security state.
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* @bprm contains the linux_binprm structure.
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* @bprm_post_apply_creds:
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* Runs after bprm_apply_creds with the task_lock dropped, so that
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* functions which cannot be called safely under the task_lock can
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* be used. This hook is a good place to perform state changes on
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* the process such as closing open file descriptors to which access
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* is no longer granted if the attributes were changed.
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* Note that a security module might need to save state between
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* bprm_apply_creds and bprm_post_apply_creds to store the decision
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* on whether the process may proceed.
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* @bprm contains the linux_binprm structure.
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* @bprm_set_security:
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* Save security information in the bprm->security field, typically based
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* on information about the bprm->file, for later use by the apply_creds
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* hook. This hook may also optionally check permissions (e.g. for
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* transitions between security domains).
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* This hook may be called multiple times during a single execve, e.g. for
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* interpreters. The hook can tell whether it has already been called by
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* checking to see if @bprm->security is non-NULL. If so, then the hook
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* may decide either to retain the security information saved earlier or
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* to replace it.
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* @bprm contains the linux_binprm structure.
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* Return 0 if the hook is successful and permission is granted.
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* @bprm_check_security:
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* This hook mediates the point when a search for a binary handler will
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* begin. It allows a check the @bprm->security value which is set in
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* the preceding set_security call. The primary difference from
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* set_security is that the argv list and envp list are reliably
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* available in @bprm. This hook may be called multiple times
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* during a single execve; and in each pass set_security is called
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* first.
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* @bprm contains the linux_binprm structure.
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* Return 0 if the hook is successful and permission is granted.
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* @bprm_secureexec:
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* Return a boolean value (0 or 1) indicating whether a "secure exec"
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* is required. The flag is passed in the auxiliary table
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* on the initial stack to the ELF interpreter to indicate whether libc
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* should enable secure mode.
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* @bprm contains the linux_binprm structure.
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*
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* Security hooks for filesystem operations.
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*
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* @sb_alloc_security:
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* Allocate and attach a security structure to the sb->s_security field.
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* The s_security field is initialized to NULL when the structure is
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* allocated.
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* @sb contains the super_block structure to be modified.
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* Return 0 if operation was successful.
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* @sb_free_security:
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* Deallocate and clear the sb->s_security field.
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* @sb contains the super_block structure to be modified.
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* @sb_statfs:
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* Check permission before obtaining filesystem statistics for the @mnt
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* mountpoint.
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* @dentry is a handle on the superblock for the filesystem.
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* Return 0 if permission is granted.
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* @sb_mount:
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* Check permission before an object specified by @dev_name is mounted on
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* the mount point named by @nd. For an ordinary mount, @dev_name
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* identifies a device if the file system type requires a device. For a
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* remount (@flags & MS_REMOUNT), @dev_name is irrelevant. For a
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* loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
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* pathname of the object being mounted.
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* @dev_name contains the name for object being mounted.
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* @path contains the path for mount point object.
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* @type contains the filesystem type.
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* @flags contains the mount flags.
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* @data contains the filesystem-specific data.
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* Return 0 if permission is granted.
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* @sb_copy_data:
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* Allow mount option data to be copied prior to parsing by the filesystem,
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* so that the security module can extract security-specific mount
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* options cleanly (a filesystem may modify the data e.g. with strsep()).
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* This also allows the original mount data to be stripped of security-
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* specific options to avoid having to make filesystems aware of them.
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* @type the type of filesystem being mounted.
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* @orig the original mount data copied from userspace.
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* @copy copied data which will be passed to the security module.
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* Returns 0 if the copy was successful.
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* @sb_check_sb:
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* Check permission before the device with superblock @mnt->sb is mounted
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* on the mount point named by @nd.
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* @mnt contains the vfsmount for device being mounted.
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* @path contains the path for the mount point.
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* Return 0 if permission is granted.
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* @sb_umount:
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* Check permission before the @mnt file system is unmounted.
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* @mnt contains the mounted file system.
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* @flags contains the unmount flags, e.g. MNT_FORCE.
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* Return 0 if permission is granted.
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* @sb_umount_close:
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* Close any files in the @mnt mounted filesystem that are held open by
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* the security module. This hook is called during an umount operation
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* prior to checking whether the filesystem is still busy.
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* @mnt contains the mounted filesystem.
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* @sb_umount_busy:
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* Handle a failed umount of the @mnt mounted filesystem, e.g. re-opening
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* any files that were closed by umount_close. This hook is called during
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* an umount operation if the umount fails after a call to the
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* umount_close hook.
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* @mnt contains the mounted filesystem.
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* @sb_post_remount:
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* Update the security module's state when a filesystem is remounted.
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* This hook is only called if the remount was successful.
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* @mnt contains the mounted file system.
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* @flags contains the new filesystem flags.
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* @data contains the filesystem-specific data.
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* @sb_post_addmount:
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* Update the security module's state when a filesystem is mounted.
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* This hook is called any time a mount is successfully grafetd to
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* the tree.
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* @mnt contains the mounted filesystem.
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* @mountpoint contains the path for the mount point.
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* @sb_pivotroot:
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* Check permission before pivoting the root filesystem.
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* @old_path contains the path for the new location of the current root (put_old).
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* @new_path contains the path for the new root (new_root).
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* Return 0 if permission is granted.
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* @sb_post_pivotroot:
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* Update module state after a successful pivot.
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* @old_path contains the path for the old root.
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* @new_path contains the path for the new root.
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* @sb_set_mnt_opts:
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* Set the security relevant mount options used for a superblock
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* @sb the superblock to set security mount options for
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* @opts binary data structure containing all lsm mount data
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* @sb_clone_mnt_opts:
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* Copy all security options from a given superblock to another
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* @oldsb old superblock which contain information to clone
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* @newsb new superblock which needs filled in
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* @sb_parse_opts_str:
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* Parse a string of security data filling in the opts structure
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* @options string containing all mount options known by the LSM
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* @opts binary data structure usable by the LSM
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*
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* Security hooks for inode operations.
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*
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* @inode_alloc_security:
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* Allocate and attach a security structure to @inode->i_security. The
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* i_security field is initialized to NULL when the inode structure is
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* allocated.
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* @inode contains the inode structure.
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* Return 0 if operation was successful.
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* @inode_free_security:
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* @inode contains the inode structure.
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* Deallocate the inode security structure and set @inode->i_security to
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* NULL.
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* @inode_init_security:
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* Obtain the security attribute name suffix and value to set on a newly
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* created inode and set up the incore security field for the new inode.
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* This hook is called by the fs code as part of the inode creation
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* transaction and provides for atomic labeling of the inode, unlike
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* the post_create/mkdir/... hooks called by the VFS. The hook function
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* is expected to allocate the name and value via kmalloc, with the caller
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* being responsible for calling kfree after using them.
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* If the security module does not use security attributes or does
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* not wish to put a security attribute on this particular inode,
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* then it should return -EOPNOTSUPP to skip this processing.
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* @inode contains the inode structure of the newly created inode.
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* @dir contains the inode structure of the parent directory.
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* @name will be set to the allocated name suffix (e.g. selinux).
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* @value will be set to the allocated attribute value.
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* @len will be set to the length of the value.
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* Returns 0 if @name and @value have been successfully set,
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* -EOPNOTSUPP if no security attribute is needed, or
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* -ENOMEM on memory allocation failure.
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* @inode_create:
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* Check permission to create a regular file.
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* @dir contains inode structure of the parent of the new file.
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* @dentry contains the dentry structure for the file to be created.
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* @mode contains the file mode of the file to be created.
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* Return 0 if permission is granted.
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* @inode_link:
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* Check permission before creating a new hard link to a file.
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* @old_dentry contains the dentry structure for an existing link to the file.
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* @dir contains the inode structure of the parent directory of the new link.
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* @new_dentry contains the dentry structure for the new link.
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* Return 0 if permission is granted.
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* @inode_unlink:
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* Check the permission to remove a hard link to a file.
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* @dir contains the inode structure of parent directory of the file.
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* @dentry contains the dentry structure for file to be unlinked.
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* Return 0 if permission is granted.
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* @inode_symlink:
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* Check the permission to create a symbolic link to a file.
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* @dir contains the inode structure of parent directory of the symbolic link.
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* @dentry contains the dentry structure of the symbolic link.
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* @old_name contains the pathname of file.
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* Return 0 if permission is granted.
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* @inode_mkdir:
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* Check permissions to create a new directory in the existing directory
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* associated with inode strcture @dir.
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* @dir containst the inode structure of parent of the directory to be created.
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* @dentry contains the dentry structure of new directory.
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* @mode contains the mode of new directory.
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* Return 0 if permission is granted.
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* @inode_rmdir:
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* Check the permission to remove a directory.
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* @dir contains the inode structure of parent of the directory to be removed.
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* @dentry contains the dentry structure of directory to be removed.
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* Return 0 if permission is granted.
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* @inode_mknod:
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* Check permissions when creating a special file (or a socket or a fifo
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* file created via the mknod system call). Note that if mknod operation
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* is being done for a regular file, then the create hook will be called
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* and not this hook.
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* @dir contains the inode structure of parent of the new file.
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* @dentry contains the dentry structure of the new file.
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* @mode contains the mode of the new file.
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* @dev contains the device number.
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* Return 0 if permission is granted.
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* @inode_rename:
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* Check for permission to rename a file or directory.
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* @old_dir contains the inode structure for parent of the old link.
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* @old_dentry contains the dentry structure of the old link.
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* @new_dir contains the inode structure for parent of the new link.
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* @new_dentry contains the dentry structure of the new link.
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* Return 0 if permission is granted.
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* @inode_readlink:
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* Check the permission to read the symbolic link.
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* @dentry contains the dentry structure for the file link.
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* Return 0 if permission is granted.
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* @inode_follow_link:
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* Check permission to follow a symbolic link when looking up a pathname.
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* @dentry contains the dentry structure for the link.
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* @nd contains the nameidata structure for the parent directory.
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* Return 0 if permission is granted.
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* @inode_permission:
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* Check permission before accessing an inode. This hook is called by the
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* existing Linux permission function, so a security module can use it to
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* provide additional checking for existing Linux permission checks.
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* Notice that this hook is called when a file is opened (as well as many
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* other operations), whereas the file_security_ops permission hook is
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* called when the actual read/write operations are performed.
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* @inode contains the inode structure to check.
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* @mask contains the permission mask.
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* @nd contains the nameidata (may be NULL).
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* Return 0 if permission is granted.
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* @inode_setattr:
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* Check permission before setting file attributes. Note that the kernel
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* call to notify_change is performed from several locations, whenever
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* file attributes change (such as when a file is truncated, chown/chmod
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* operations, transferring disk quotas, etc).
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* @dentry contains the dentry structure for the file.
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* @attr is the iattr structure containing the new file attributes.
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* Return 0 if permission is granted.
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* @inode_getattr:
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* Check permission before obtaining file attributes.
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* @mnt is the vfsmount where the dentry was looked up
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* @dentry contains the dentry structure for the file.
|
|
* Return 0 if permission is granted.
|
|
* @inode_delete:
|
|
* @inode contains the inode structure for deleted inode.
|
|
* This hook is called when a deleted inode is released (i.e. an inode
|
|
* with no hard links has its use count drop to zero). A security module
|
|
* can use this hook to release any persistent label associated with the
|
|
* inode.
|
|
* @inode_setxattr:
|
|
* Check permission before setting the extended attributes
|
|
* @value identified by @name for @dentry.
|
|
* Return 0 if permission is granted.
|
|
* @inode_post_setxattr:
|
|
* Update inode security field after successful setxattr operation.
|
|
* @value identified by @name for @dentry.
|
|
* @inode_getxattr:
|
|
* Check permission before obtaining the extended attributes
|
|
* identified by @name for @dentry.
|
|
* Return 0 if permission is granted.
|
|
* @inode_listxattr:
|
|
* Check permission before obtaining the list of extended attribute
|
|
* names for @dentry.
|
|
* Return 0 if permission is granted.
|
|
* @inode_removexattr:
|
|
* Check permission before removing the extended attribute
|
|
* identified by @name for @dentry.
|
|
* Return 0 if permission is granted.
|
|
* @inode_getsecurity:
|
|
* Retrieve a copy of the extended attribute representation of the
|
|
* security label associated with @name for @inode via @buffer. Note that
|
|
* @name is the remainder of the attribute name after the security prefix
|
|
* has been removed. @alloc is used to specify of the call should return a
|
|
* value via the buffer or just the value length Return size of buffer on
|
|
* success.
|
|
* @inode_setsecurity:
|
|
* Set the security label associated with @name for @inode from the
|
|
* extended attribute value @value. @size indicates the size of the
|
|
* @value in bytes. @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
|
|
* Note that @name is the remainder of the attribute name after the
|
|
* security. prefix has been removed.
|
|
* Return 0 on success.
|
|
* @inode_listsecurity:
|
|
* Copy the extended attribute names for the security labels
|
|
* associated with @inode into @buffer. The maximum size of @buffer
|
|
* is specified by @buffer_size. @buffer may be NULL to request
|
|
* the size of the buffer required.
|
|
* Returns number of bytes used/required on success.
|
|
* @inode_need_killpriv:
|
|
* Called when an inode has been changed.
|
|
* @dentry is the dentry being changed.
|
|
* Return <0 on error to abort the inode change operation.
|
|
* Return 0 if inode_killpriv does not need to be called.
|
|
* Return >0 if inode_killpriv does need to be called.
|
|
* @inode_killpriv:
|
|
* The setuid bit is being removed. Remove similar security labels.
|
|
* Called with the dentry->d_inode->i_mutex held.
|
|
* @dentry is the dentry being changed.
|
|
* Return 0 on success. If error is returned, then the operation
|
|
* causing setuid bit removal is failed.
|
|
* @inode_getsecid:
|
|
* Get the secid associated with the node.
|
|
* @inode contains a pointer to the inode.
|
|
* @secid contains a pointer to the location where result will be saved.
|
|
* In case of failure, @secid will be set to zero.
|
|
*
|
|
* Security hooks for file operations
|
|
*
|
|
* @file_permission:
|
|
* Check file permissions before accessing an open file. This hook is
|
|
* called by various operations that read or write files. A security
|
|
* module can use this hook to perform additional checking on these
|
|
* operations, e.g. to revalidate permissions on use to support privilege
|
|
* bracketing or policy changes. Notice that this hook is used when the
|
|
* actual read/write operations are performed, whereas the
|
|
* inode_security_ops hook is called when a file is opened (as well as
|
|
* many other operations).
|
|
* Caveat: Although this hook can be used to revalidate permissions for
|
|
* various system call operations that read or write files, it does not
|
|
* address the revalidation of permissions for memory-mapped files.
|
|
* Security modules must handle this separately if they need such
|
|
* revalidation.
|
|
* @file contains the file structure being accessed.
|
|
* @mask contains the requested permissions.
|
|
* Return 0 if permission is granted.
|
|
* @file_alloc_security:
|
|
* Allocate and attach a security structure to the file->f_security field.
|
|
* The security field is initialized to NULL when the structure is first
|
|
* created.
|
|
* @file contains the file structure to secure.
|
|
* Return 0 if the hook is successful and permission is granted.
|
|
* @file_free_security:
|
|
* Deallocate and free any security structures stored in file->f_security.
|
|
* @file contains the file structure being modified.
|
|
* @file_ioctl:
|
|
* @file contains the file structure.
|
|
* @cmd contains the operation to perform.
|
|
* @arg contains the operational arguments.
|
|
* Check permission for an ioctl operation on @file. Note that @arg can
|
|
* sometimes represents a user space pointer; in other cases, it may be a
|
|
* simple integer value. When @arg represents a user space pointer, it
|
|
* should never be used by the security module.
|
|
* Return 0 if permission is granted.
|
|
* @file_mmap :
|
|
* Check permissions for a mmap operation. The @file may be NULL, e.g.
|
|
* if mapping anonymous memory.
|
|
* @file contains the file structure for file to map (may be NULL).
|
|
* @reqprot contains the protection requested by the application.
|
|
* @prot contains the protection that will be applied by the kernel.
|
|
* @flags contains the operational flags.
|
|
* Return 0 if permission is granted.
|
|
* @file_mprotect:
|
|
* Check permissions before changing memory access permissions.
|
|
* @vma contains the memory region to modify.
|
|
* @reqprot contains the protection requested by the application.
|
|
* @prot contains the protection that will be applied by the kernel.
|
|
* Return 0 if permission is granted.
|
|
* @file_lock:
|
|
* Check permission before performing file locking operations.
|
|
* Note: this hook mediates both flock and fcntl style locks.
|
|
* @file contains the file structure.
|
|
* @cmd contains the posix-translated lock operation to perform
|
|
* (e.g. F_RDLCK, F_WRLCK).
|
|
* Return 0 if permission is granted.
|
|
* @file_fcntl:
|
|
* Check permission before allowing the file operation specified by @cmd
|
|
* from being performed on the file @file. Note that @arg can sometimes
|
|
* represents a user space pointer; in other cases, it may be a simple
|
|
* integer value. When @arg represents a user space pointer, it should
|
|
* never be used by the security module.
|
|
* @file contains the file structure.
|
|
* @cmd contains the operation to be performed.
|
|
* @arg contains the operational arguments.
|
|
* Return 0 if permission is granted.
|
|
* @file_set_fowner:
|
|
* Save owner security information (typically from current->security) in
|
|
* file->f_security for later use by the send_sigiotask hook.
|
|
* @file contains the file structure to update.
|
|
* Return 0 on success.
|
|
* @file_send_sigiotask:
|
|
* Check permission for the file owner @fown to send SIGIO or SIGURG to the
|
|
* process @tsk. Note that this hook is sometimes called from interrupt.
|
|
* Note that the fown_struct, @fown, is never outside the context of a
|
|
* struct file, so the file structure (and associated security information)
|
|
* can always be obtained:
|
|
* container_of(fown, struct file, f_owner)
|
|
* @tsk contains the structure of task receiving signal.
|
|
* @fown contains the file owner information.
|
|
* @sig is the signal that will be sent. When 0, kernel sends SIGIO.
|
|
* Return 0 if permission is granted.
|
|
* @file_receive:
|
|
* This hook allows security modules to control the ability of a process
|
|
* to receive an open file descriptor via socket IPC.
|
|
* @file contains the file structure being received.
|
|
* Return 0 if permission is granted.
|
|
*
|
|
* Security hook for dentry
|
|
*
|
|
* @dentry_open
|
|
* Save open-time permission checking state for later use upon
|
|
* file_permission, and recheck access if anything has changed
|
|
* since inode_permission.
|
|
*
|
|
* Security hooks for task operations.
|
|
*
|
|
* @task_create:
|
|
* Check permission before creating a child process. See the clone(2)
|
|
* manual page for definitions of the @clone_flags.
|
|
* @clone_flags contains the flags indicating what should be shared.
|
|
* Return 0 if permission is granted.
|
|
* @task_alloc_security:
|
|
* @p contains the task_struct for child process.
|
|
* Allocate and attach a security structure to the p->security field. The
|
|
* security field is initialized to NULL when the task structure is
|
|
* allocated.
|
|
* Return 0 if operation was successful.
|
|
* @task_free_security:
|
|
* @p contains the task_struct for process.
|
|
* Deallocate and clear the p->security field.
|
|
* @task_setuid:
|
|
* Check permission before setting one or more of the user identity
|
|
* attributes of the current process. The @flags parameter indicates
|
|
* which of the set*uid system calls invoked this hook and how to
|
|
* interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
|
|
* definitions at the beginning of this file for the @flags values and
|
|
* their meanings.
|
|
* @id0 contains a uid.
|
|
* @id1 contains a uid.
|
|
* @id2 contains a uid.
|
|
* @flags contains one of the LSM_SETID_* values.
|
|
* Return 0 if permission is granted.
|
|
* @task_post_setuid:
|
|
* Update the module's state after setting one or more of the user
|
|
* identity attributes of the current process. The @flags parameter
|
|
* indicates which of the set*uid system calls invoked this hook. If
|
|
* @flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other
|
|
* parameters are not used.
|
|
* @old_ruid contains the old real uid (or fs uid if LSM_SETID_FS).
|
|
* @old_euid contains the old effective uid (or -1 if LSM_SETID_FS).
|
|
* @old_suid contains the old saved uid (or -1 if LSM_SETID_FS).
|
|
* @flags contains one of the LSM_SETID_* values.
|
|
* Return 0 on success.
|
|
* @task_setgid:
|
|
* Check permission before setting one or more of the group identity
|
|
* attributes of the current process. The @flags parameter indicates
|
|
* which of the set*gid system calls invoked this hook and how to
|
|
* interpret the @id0, @id1, and @id2 parameters. See the LSM_SETID
|
|
* definitions at the beginning of this file for the @flags values and
|
|
* their meanings.
|
|
* @id0 contains a gid.
|
|
* @id1 contains a gid.
|
|
* @id2 contains a gid.
|
|
* @flags contains one of the LSM_SETID_* values.
|
|
* Return 0 if permission is granted.
|
|
* @task_setpgid:
|
|
* Check permission before setting the process group identifier of the
|
|
* process @p to @pgid.
|
|
* @p contains the task_struct for process being modified.
|
|
* @pgid contains the new pgid.
|
|
* Return 0 if permission is granted.
|
|
* @task_getpgid:
|
|
* Check permission before getting the process group identifier of the
|
|
* process @p.
|
|
* @p contains the task_struct for the process.
|
|
* Return 0 if permission is granted.
|
|
* @task_getsid:
|
|
* Check permission before getting the session identifier of the process
|
|
* @p.
|
|
* @p contains the task_struct for the process.
|
|
* Return 0 if permission is granted.
|
|
* @task_getsecid:
|
|
* Retrieve the security identifier of the process @p.
|
|
* @p contains the task_struct for the process and place is into @secid.
|
|
* In case of failure, @secid will be set to zero.
|
|
*
|
|
* @task_setgroups:
|
|
* Check permission before setting the supplementary group set of the
|
|
* current process.
|
|
* @group_info contains the new group information.
|
|
* Return 0 if permission is granted.
|
|
* @task_setnice:
|
|
* Check permission before setting the nice value of @p to @nice.
|
|
* @p contains the task_struct of process.
|
|
* @nice contains the new nice value.
|
|
* Return 0 if permission is granted.
|
|
* @task_setioprio
|
|
* Check permission before setting the ioprio value of @p to @ioprio.
|
|
* @p contains the task_struct of process.
|
|
* @ioprio contains the new ioprio value
|
|
* Return 0 if permission is granted.
|
|
* @task_getioprio
|
|
* Check permission before getting the ioprio value of @p.
|
|
* @p contains the task_struct of process.
|
|
* Return 0 if permission is granted.
|
|
* @task_setrlimit:
|
|
* Check permission before setting the resource limits of the current
|
|
* process for @resource to @new_rlim. The old resource limit values can
|
|
* be examined by dereferencing (current->signal->rlim + resource).
|
|
* @resource contains the resource whose limit is being set.
|
|
* @new_rlim contains the new limits for @resource.
|
|
* Return 0 if permission is granted.
|
|
* @task_setscheduler:
|
|
* Check permission before setting scheduling policy and/or parameters of
|
|
* process @p based on @policy and @lp.
|
|
* @p contains the task_struct for process.
|
|
* @policy contains the scheduling policy.
|
|
* @lp contains the scheduling parameters.
|
|
* Return 0 if permission is granted.
|
|
* @task_getscheduler:
|
|
* Check permission before obtaining scheduling information for process
|
|
* @p.
|
|
* @p contains the task_struct for process.
|
|
* Return 0 if permission is granted.
|
|
* @task_movememory
|
|
* Check permission before moving memory owned by process @p.
|
|
* @p contains the task_struct for process.
|
|
* Return 0 if permission is granted.
|
|
* @task_kill:
|
|
* Check permission before sending signal @sig to @p. @info can be NULL,
|
|
* the constant 1, or a pointer to a siginfo structure. If @info is 1 or
|
|
* SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
|
|
* from the kernel and should typically be permitted.
|
|
* SIGIO signals are handled separately by the send_sigiotask hook in
|
|
* file_security_ops.
|
|
* @p contains the task_struct for process.
|
|
* @info contains the signal information.
|
|
* @sig contains the signal value.
|
|
* @secid contains the sid of the process where the signal originated
|
|
* Return 0 if permission is granted.
|
|
* @task_wait:
|
|
* Check permission before allowing a process to reap a child process @p
|
|
* and collect its status information.
|
|
* @p contains the task_struct for process.
|
|
* Return 0 if permission is granted.
|
|
* @task_prctl:
|
|
* Check permission before performing a process control operation on the
|
|
* current process.
|
|
* @option contains the operation.
|
|
* @arg2 contains a argument.
|
|
* @arg3 contains a argument.
|
|
* @arg4 contains a argument.
|
|
* @arg5 contains a argument.
|
|
* @rc_p contains a pointer to communicate back the forced return code
|
|
* Return 0 if permission is granted, and non-zero if the security module
|
|
* has taken responsibility (setting *rc_p) for the prctl call.
|
|
* @task_reparent_to_init:
|
|
* Set the security attributes in @p->security for a kernel thread that
|
|
* is being reparented to the init task.
|
|
* @p contains the task_struct for the kernel thread.
|
|
* @task_to_inode:
|
|
* Set the security attributes for an inode based on an associated task's
|
|
* security attributes, e.g. for /proc/pid inodes.
|
|
* @p contains the task_struct for the task.
|
|
* @inode contains the inode structure for the inode.
|
|
*
|
|
* Security hooks for Netlink messaging.
|
|
*
|
|
* @netlink_send:
|
|
* Save security information for a netlink message so that permission
|
|
* checking can be performed when the message is processed. The security
|
|
* information can be saved using the eff_cap field of the
|
|
* netlink_skb_parms structure. Also may be used to provide fine
|
|
* grained control over message transmission.
|
|
* @sk associated sock of task sending the message.,
|
|
* @skb contains the sk_buff structure for the netlink message.
|
|
* Return 0 if the information was successfully saved and message
|
|
* is allowed to be transmitted.
|
|
* @netlink_recv:
|
|
* Check permission before processing the received netlink message in
|
|
* @skb.
|
|
* @skb contains the sk_buff structure for the netlink message.
|
|
* @cap indicates the capability required
|
|
* Return 0 if permission is granted.
|
|
*
|
|
* Security hooks for Unix domain networking.
|
|
*
|
|
* @unix_stream_connect:
|
|
* Check permissions before establishing a Unix domain stream connection
|
|
* between @sock and @other.
|
|
* @sock contains the socket structure.
|
|
* @other contains the peer socket structure.
|
|
* Return 0 if permission is granted.
|
|
* @unix_may_send:
|
|
* Check permissions before connecting or sending datagrams from @sock to
|
|
* @other.
|
|
* @sock contains the socket structure.
|
|
* @sock contains the peer socket structure.
|
|
* Return 0 if permission is granted.
|
|
*
|
|
* The @unix_stream_connect and @unix_may_send hooks were necessary because
|
|
* Linux provides an alternative to the conventional file name space for Unix
|
|
* domain sockets. Whereas binding and connecting to sockets in the file name
|
|
* space is mediated by the typical file permissions (and caught by the mknod
|
|
* and permission hooks in inode_security_ops), binding and connecting to
|
|
* sockets in the abstract name space is completely unmediated. Sufficient
|
|
* control of Unix domain sockets in the abstract name space isn't possible
|
|
* using only the socket layer hooks, since we need to know the actual target
|
|
* socket, which is not looked up until we are inside the af_unix code.
|
|
*
|
|
* Security hooks for socket operations.
|
|
*
|
|
* @socket_create:
|
|
* Check permissions prior to creating a new socket.
|
|
* @family contains the requested protocol family.
|
|
* @type contains the requested communications type.
|
|
* @protocol contains the requested protocol.
|
|
* @kern set to 1 if a kernel socket.
|
|
* Return 0 if permission is granted.
|
|
* @socket_post_create:
|
|
* This hook allows a module to update or allocate a per-socket security
|
|
* structure. Note that the security field was not added directly to the
|
|
* socket structure, but rather, the socket security information is stored
|
|
* in the associated inode. Typically, the inode alloc_security hook will
|
|
* allocate and and attach security information to
|
|
* sock->inode->i_security. This hook may be used to update the
|
|
* sock->inode->i_security field with additional information that wasn't
|
|
* available when the inode was allocated.
|
|
* @sock contains the newly created socket structure.
|
|
* @family contains the requested protocol family.
|
|
* @type contains the requested communications type.
|
|
* @protocol contains the requested protocol.
|
|
* @kern set to 1 if a kernel socket.
|
|
* @socket_bind:
|
|
* Check permission before socket protocol layer bind operation is
|
|
* performed and the socket @sock is bound to the address specified in the
|
|
* @address parameter.
|
|
* @sock contains the socket structure.
|
|
* @address contains the address to bind to.
|
|
* @addrlen contains the length of address.
|
|
* Return 0 if permission is granted.
|
|
* @socket_connect:
|
|
* Check permission before socket protocol layer connect operation
|
|
* attempts to connect socket @sock to a remote address, @address.
|
|
* @sock contains the socket structure.
|
|
* @address contains the address of remote endpoint.
|
|
* @addrlen contains the length of address.
|
|
* Return 0 if permission is granted.
|
|
* @socket_listen:
|
|
* Check permission before socket protocol layer listen operation.
|
|
* @sock contains the socket structure.
|
|
* @backlog contains the maximum length for the pending connection queue.
|
|
* Return 0 if permission is granted.
|
|
* @socket_accept:
|
|
* Check permission before accepting a new connection. Note that the new
|
|
* socket, @newsock, has been created and some information copied to it,
|
|
* but the accept operation has not actually been performed.
|
|
* @sock contains the listening socket structure.
|
|
* @newsock contains the newly created server socket for connection.
|
|
* Return 0 if permission is granted.
|
|
* @socket_post_accept:
|
|
* This hook allows a security module to copy security
|
|
* information into the newly created socket's inode.
|
|
* @sock contains the listening socket structure.
|
|
* @newsock contains the newly created server socket for connection.
|
|
* @socket_sendmsg:
|
|
* Check permission before transmitting a message to another socket.
|
|
* @sock contains the socket structure.
|
|
* @msg contains the message to be transmitted.
|
|
* @size contains the size of message.
|
|
* Return 0 if permission is granted.
|
|
* @socket_recvmsg:
|
|
* Check permission before receiving a message from a socket.
|
|
* @sock contains the socket structure.
|
|
* @msg contains the message structure.
|
|
* @size contains the size of message structure.
|
|
* @flags contains the operational flags.
|
|
* Return 0 if permission is granted.
|
|
* @socket_getsockname:
|
|
* Check permission before the local address (name) of the socket object
|
|
* @sock is retrieved.
|
|
* @sock contains the socket structure.
|
|
* Return 0 if permission is granted.
|
|
* @socket_getpeername:
|
|
* Check permission before the remote address (name) of a socket object
|
|
* @sock is retrieved.
|
|
* @sock contains the socket structure.
|
|
* Return 0 if permission is granted.
|
|
* @socket_getsockopt:
|
|
* Check permissions before retrieving the options associated with socket
|
|
* @sock.
|
|
* @sock contains the socket structure.
|
|
* @level contains the protocol level to retrieve option from.
|
|
* @optname contains the name of option to retrieve.
|
|
* Return 0 if permission is granted.
|
|
* @socket_setsockopt:
|
|
* Check permissions before setting the options associated with socket
|
|
* @sock.
|
|
* @sock contains the socket structure.
|
|
* @level contains the protocol level to set options for.
|
|
* @optname contains the name of the option to set.
|
|
* Return 0 if permission is granted.
|
|
* @socket_shutdown:
|
|
* Checks permission before all or part of a connection on the socket
|
|
* @sock is shut down.
|
|
* @sock contains the socket structure.
|
|
* @how contains the flag indicating how future sends and receives are handled.
|
|
* Return 0 if permission is granted.
|
|
* @socket_sock_rcv_skb:
|
|
* Check permissions on incoming network packets. This hook is distinct
|
|
* from Netfilter's IP input hooks since it is the first time that the
|
|
* incoming sk_buff @skb has been associated with a particular socket, @sk.
|
|
* @sk contains the sock (not socket) associated with the incoming sk_buff.
|
|
* @skb contains the incoming network data.
|
|
* @socket_getpeersec_stream:
|
|
* This hook allows the security module to provide peer socket security
|
|
* state for unix or connected tcp sockets to userspace via getsockopt
|
|
* SO_GETPEERSEC. For tcp sockets this can be meaningful if the
|
|
* socket is associated with an ipsec SA.
|
|
* @sock is the local socket.
|
|
* @optval userspace memory where the security state is to be copied.
|
|
* @optlen userspace int where the module should copy the actual length
|
|
* of the security state.
|
|
* @len as input is the maximum length to copy to userspace provided
|
|
* by the caller.
|
|
* Return 0 if all is well, otherwise, typical getsockopt return
|
|
* values.
|
|
* @socket_getpeersec_dgram:
|
|
* This hook allows the security module to provide peer socket security
|
|
* state for udp sockets on a per-packet basis to userspace via
|
|
* getsockopt SO_GETPEERSEC. The application must first have indicated
|
|
* the IP_PASSSEC option via getsockopt. It can then retrieve the
|
|
* security state returned by this hook for a packet via the SCM_SECURITY
|
|
* ancillary message type.
|
|
* @skb is the skbuff for the packet being queried
|
|
* @secdata is a pointer to a buffer in which to copy the security data
|
|
* @seclen is the maximum length for @secdata
|
|
* Return 0 on success, error on failure.
|
|
* @sk_alloc_security:
|
|
* Allocate and attach a security structure to the sk->sk_security field,
|
|
* which is used to copy security attributes between local stream sockets.
|
|
* @sk_free_security:
|
|
* Deallocate security structure.
|
|
* @sk_clone_security:
|
|
* Clone/copy security structure.
|
|
* @sk_getsecid:
|
|
* Retrieve the LSM-specific secid for the sock to enable caching of network
|
|
* authorizations.
|
|
* @sock_graft:
|
|
* Sets the socket's isec sid to the sock's sid.
|
|
* @inet_conn_request:
|
|
* Sets the openreq's sid to socket's sid with MLS portion taken from peer sid.
|
|
* @inet_csk_clone:
|
|
* Sets the new child socket's sid to the openreq sid.
|
|
* @inet_conn_established:
|
|
* Sets the connection's peersid to the secmark on skb.
|
|
* @req_classify_flow:
|
|
* Sets the flow's sid to the openreq sid.
|
|
*
|
|
* Security hooks for XFRM operations.
|
|
*
|
|
* @xfrm_policy_alloc_security:
|
|
* @ctxp is a pointer to the xfrm_sec_ctx being added to Security Policy
|
|
* Database used by the XFRM system.
|
|
* @sec_ctx contains the security context information being provided by
|
|
* the user-level policy update program (e.g., setkey).
|
|
* Allocate a security structure to the xp->security field; the security
|
|
* field is initialized to NULL when the xfrm_policy is allocated.
|
|
* Return 0 if operation was successful (memory to allocate, legal context)
|
|
* @xfrm_policy_clone_security:
|
|
* @old_ctx contains an existing xfrm_sec_ctx.
|
|
* @new_ctxp contains a new xfrm_sec_ctx being cloned from old.
|
|
* Allocate a security structure in new_ctxp that contains the
|
|
* information from the old_ctx structure.
|
|
* Return 0 if operation was successful (memory to allocate).
|
|
* @xfrm_policy_free_security:
|
|
* @ctx contains the xfrm_sec_ctx
|
|
* Deallocate xp->security.
|
|
* @xfrm_policy_delete_security:
|
|
* @ctx contains the xfrm_sec_ctx.
|
|
* Authorize deletion of xp->security.
|
|
* @xfrm_state_alloc_security:
|
|
* @x contains the xfrm_state being added to the Security Association
|
|
* Database by the XFRM system.
|
|
* @sec_ctx contains the security context information being provided by
|
|
* the user-level SA generation program (e.g., setkey or racoon).
|
|
* @secid contains the secid from which to take the mls portion of the context.
|
|
* Allocate a security structure to the x->security field; the security
|
|
* field is initialized to NULL when the xfrm_state is allocated. Set the
|
|
* context to correspond to either sec_ctx or polsec, with the mls portion
|
|
* taken from secid in the latter case.
|
|
* Return 0 if operation was successful (memory to allocate, legal context).
|
|
* @xfrm_state_free_security:
|
|
* @x contains the xfrm_state.
|
|
* Deallocate x->security.
|
|
* @xfrm_state_delete_security:
|
|
* @x contains the xfrm_state.
|
|
* Authorize deletion of x->security.
|
|
* @xfrm_policy_lookup:
|
|
* @ctx contains the xfrm_sec_ctx for which the access control is being
|
|
* checked.
|
|
* @fl_secid contains the flow security label that is used to authorize
|
|
* access to the policy xp.
|
|
* @dir contains the direction of the flow (input or output).
|
|
* Check permission when a flow selects a xfrm_policy for processing
|
|
* XFRMs on a packet. The hook is called when selecting either a
|
|
* per-socket policy or a generic xfrm policy.
|
|
* Return 0 if permission is granted, -ESRCH otherwise, or -errno
|
|
* on other errors.
|
|
* @xfrm_state_pol_flow_match:
|
|
* @x contains the state to match.
|
|
* @xp contains the policy to check for a match.
|
|
* @fl contains the flow to check for a match.
|
|
* Return 1 if there is a match.
|
|
* @xfrm_decode_session:
|
|
* @skb points to skb to decode.
|
|
* @secid points to the flow key secid to set.
|
|
* @ckall says if all xfrms used should be checked for same secid.
|
|
* Return 0 if ckall is zero or all xfrms used have the same secid.
|
|
*
|
|
* Security hooks affecting all Key Management operations
|
|
*
|
|
* @key_alloc:
|
|
* Permit allocation of a key and assign security data. Note that key does
|
|
* not have a serial number assigned at this point.
|
|
* @key points to the key.
|
|
* @flags is the allocation flags
|
|
* Return 0 if permission is granted, -ve error otherwise.
|
|
* @key_free:
|
|
* Notification of destruction; free security data.
|
|
* @key points to the key.
|
|
* No return value.
|
|
* @key_permission:
|
|
* See whether a specific operational right is granted to a process on a
|
|
* key.
|
|
* @key_ref refers to the key (key pointer + possession attribute bit).
|
|
* @context points to the process to provide the context against which to
|
|
* evaluate the security data on the key.
|
|
* @perm describes the combination of permissions required of this key.
|
|
* Return 1 if permission granted, 0 if permission denied and -ve it the
|
|
* normal permissions model should be effected.
|
|
* @key_getsecurity:
|
|
* Get a textual representation of the security context attached to a key
|
|
* for the purposes of honouring KEYCTL_GETSECURITY. This function
|
|
* allocates the storage for the NUL-terminated string and the caller
|
|
* should free it.
|
|
* @key points to the key to be queried.
|
|
* @_buffer points to a pointer that should be set to point to the
|
|
* resulting string (if no label or an error occurs).
|
|
* Return the length of the string (including terminating NUL) or -ve if
|
|
* an error.
|
|
* May also return 0 (and a NULL buffer pointer) if there is no label.
|
|
*
|
|
* Security hooks affecting all System V IPC operations.
|
|
*
|
|
* @ipc_permission:
|
|
* Check permissions for access to IPC
|
|
* @ipcp contains the kernel IPC permission structure
|
|
* @flag contains the desired (requested) permission set
|
|
* Return 0 if permission is granted.
|
|
* @ipc_getsecid:
|
|
* Get the secid associated with the ipc object.
|
|
* @ipcp contains the kernel IPC permission structure.
|
|
* @secid contains a pointer to the location where result will be saved.
|
|
* In case of failure, @secid will be set to zero.
|
|
*
|
|
* Security hooks for individual messages held in System V IPC message queues
|
|
* @msg_msg_alloc_security:
|
|
* Allocate and attach a security structure to the msg->security field.
|
|
* The security field is initialized to NULL when the structure is first
|
|
* created.
|
|
* @msg contains the message structure to be modified.
|
|
* Return 0 if operation was successful and permission is granted.
|
|
* @msg_msg_free_security:
|
|
* Deallocate the security structure for this message.
|
|
* @msg contains the message structure to be modified.
|
|
*
|
|
* Security hooks for System V IPC Message Queues
|
|
*
|
|
* @msg_queue_alloc_security:
|
|
* Allocate and attach a security structure to the
|
|
* msq->q_perm.security field. The security field is initialized to
|
|
* NULL when the structure is first created.
|
|
* @msq contains the message queue structure to be modified.
|
|
* Return 0 if operation was successful and permission is granted.
|
|
* @msg_queue_free_security:
|
|
* Deallocate security structure for this message queue.
|
|
* @msq contains the message queue structure to be modified.
|
|
* @msg_queue_associate:
|
|
* Check permission when a message queue is requested through the
|
|
* msgget system call. This hook is only called when returning the
|
|
* message queue identifier for an existing message queue, not when a
|
|
* new message queue is created.
|
|
* @msq contains the message queue to act upon.
|
|
* @msqflg contains the operation control flags.
|
|
* Return 0 if permission is granted.
|
|
* @msg_queue_msgctl:
|
|
* Check permission when a message control operation specified by @cmd
|
|
* is to be performed on the message queue @msq.
|
|
* The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
|
|
* @msq contains the message queue to act upon. May be NULL.
|
|
* @cmd contains the operation to be performed.
|
|
* Return 0 if permission is granted.
|
|
* @msg_queue_msgsnd:
|
|
* Check permission before a message, @msg, is enqueued on the message
|
|
* queue, @msq.
|
|
* @msq contains the message queue to send message to.
|
|
* @msg contains the message to be enqueued.
|
|
* @msqflg contains operational flags.
|
|
* Return 0 if permission is granted.
|
|
* @msg_queue_msgrcv:
|
|
* Check permission before a message, @msg, is removed from the message
|
|
* queue, @msq. The @target task structure contains a pointer to the
|
|
* process that will be receiving the message (not equal to the current
|
|
* process when inline receives are being performed).
|
|
* @msq contains the message queue to retrieve message from.
|
|
* @msg contains the message destination.
|
|
* @target contains the task structure for recipient process.
|
|
* @type contains the type of message requested.
|
|
* @mode contains the operational flags.
|
|
* Return 0 if permission is granted.
|
|
*
|
|
* Security hooks for System V Shared Memory Segments
|
|
*
|
|
* @shm_alloc_security:
|
|
* Allocate and attach a security structure to the shp->shm_perm.security
|
|
* field. The security field is initialized to NULL when the structure is
|
|
* first created.
|
|
* @shp contains the shared memory structure to be modified.
|
|
* Return 0 if operation was successful and permission is granted.
|
|
* @shm_free_security:
|
|
* Deallocate the security struct for this memory segment.
|
|
* @shp contains the shared memory structure to be modified.
|
|
* @shm_associate:
|
|
* Check permission when a shared memory region is requested through the
|
|
* shmget system call. This hook is only called when returning the shared
|
|
* memory region identifier for an existing region, not when a new shared
|
|
* memory region is created.
|
|
* @shp contains the shared memory structure to be modified.
|
|
* @shmflg contains the operation control flags.
|
|
* Return 0 if permission is granted.
|
|
* @shm_shmctl:
|
|
* Check permission when a shared memory control operation specified by
|
|
* @cmd is to be performed on the shared memory region @shp.
|
|
* The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
|
|
* @shp contains shared memory structure to be modified.
|
|
* @cmd contains the operation to be performed.
|
|
* Return 0 if permission is granted.
|
|
* @shm_shmat:
|
|
* Check permissions prior to allowing the shmat system call to attach the
|
|
* shared memory segment @shp to the data segment of the calling process.
|
|
* The attaching address is specified by @shmaddr.
|
|
* @shp contains the shared memory structure to be modified.
|
|
* @shmaddr contains the address to attach memory region to.
|
|
* @shmflg contains the operational flags.
|
|
* Return 0 if permission is granted.
|
|
*
|
|
* Security hooks for System V Semaphores
|
|
*
|
|
* @sem_alloc_security:
|
|
* Allocate and attach a security structure to the sma->sem_perm.security
|
|
* field. The security field is initialized to NULL when the structure is
|
|
* first created.
|
|
* @sma contains the semaphore structure
|
|
* Return 0 if operation was successful and permission is granted.
|
|
* @sem_free_security:
|
|
* deallocate security struct for this semaphore
|
|
* @sma contains the semaphore structure.
|
|
* @sem_associate:
|
|
* Check permission when a semaphore is requested through the semget
|
|
* system call. This hook is only called when returning the semaphore
|
|
* identifier for an existing semaphore, not when a new one must be
|
|
* created.
|
|
* @sma contains the semaphore structure.
|
|
* @semflg contains the operation control flags.
|
|
* Return 0 if permission is granted.
|
|
* @sem_semctl:
|
|
* Check permission when a semaphore operation specified by @cmd is to be
|
|
* performed on the semaphore @sma. The @sma may be NULL, e.g. for
|
|
* IPC_INFO or SEM_INFO.
|
|
* @sma contains the semaphore structure. May be NULL.
|
|
* @cmd contains the operation to be performed.
|
|
* Return 0 if permission is granted.
|
|
* @sem_semop
|
|
* Check permissions before performing operations on members of the
|
|
* semaphore set @sma. If the @alter flag is nonzero, the semaphore set
|
|
* may be modified.
|
|
* @sma contains the semaphore structure.
|
|
* @sops contains the operations to perform.
|
|
* @nsops contains the number of operations to perform.
|
|
* @alter contains the flag indicating whether changes are to be made.
|
|
* Return 0 if permission is granted.
|
|
*
|
|
* @ptrace:
|
|
* Check permission before allowing the @parent process to trace the
|
|
* @child process.
|
|
* Security modules may also want to perform a process tracing check
|
|
* during an execve in the set_security or apply_creds hooks of
|
|
* binprm_security_ops if the process is being traced and its security
|
|
* attributes would be changed by the execve.
|
|
* @parent contains the task_struct structure for parent process.
|
|
* @child contains the task_struct structure for child process.
|
|
* @mode contains the PTRACE_MODE flags indicating the form of access.
|
|
* Return 0 if permission is granted.
|
|
* @capget:
|
|
* Get the @effective, @inheritable, and @permitted capability sets for
|
|
* the @target process. The hook may also perform permission checking to
|
|
* determine if the current process is allowed to see the capability sets
|
|
* of the @target process.
|
|
* @target contains the task_struct structure for target process.
|
|
* @effective contains the effective capability set.
|
|
* @inheritable contains the inheritable capability set.
|
|
* @permitted contains the permitted capability set.
|
|
* Return 0 if the capability sets were successfully obtained.
|
|
* @capset_check:
|
|
* Check permission before setting the @effective, @inheritable, and
|
|
* @permitted capability sets for the @target process.
|
|
* Caveat: @target is also set to current if a set of processes is
|
|
* specified (i.e. all processes other than current and init or a
|
|
* particular process group). Hence, the capset_set hook may need to
|
|
* revalidate permission to the actual target process.
|
|
* @target contains the task_struct structure for target process.
|
|
* @effective contains the effective capability set.
|
|
* @inheritable contains the inheritable capability set.
|
|
* @permitted contains the permitted capability set.
|
|
* Return 0 if permission is granted.
|
|
* @capset_set:
|
|
* Set the @effective, @inheritable, and @permitted capability sets for
|
|
* the @target process. Since capset_check cannot always check permission
|
|
* to the real @target process, this hook may also perform permission
|
|
* checking to determine if the current process is allowed to set the
|
|
* capability sets of the @target process. However, this hook has no way
|
|
* of returning an error due to the structure of the sys_capset code.
|
|
* @target contains the task_struct structure for target process.
|
|
* @effective contains the effective capability set.
|
|
* @inheritable contains the inheritable capability set.
|
|
* @permitted contains the permitted capability set.
|
|
* @capable:
|
|
* Check whether the @tsk process has the @cap capability.
|
|
* @tsk contains the task_struct for the process.
|
|
* @cap contains the capability <include/linux/capability.h>.
|
|
* Return 0 if the capability is granted for @tsk.
|
|
* @acct:
|
|
* Check permission before enabling or disabling process accounting. If
|
|
* accounting is being enabled, then @file refers to the open file used to
|
|
* store accounting records. If accounting is being disabled, then @file
|
|
* is NULL.
|
|
* @file contains the file structure for the accounting file (may be NULL).
|
|
* Return 0 if permission is granted.
|
|
* @sysctl:
|
|
* Check permission before accessing the @table sysctl variable in the
|
|
* manner specified by @op.
|
|
* @table contains the ctl_table structure for the sysctl variable.
|
|
* @op contains the operation (001 = search, 002 = write, 004 = read).
|
|
* Return 0 if permission is granted.
|
|
* @syslog:
|
|
* Check permission before accessing the kernel message ring or changing
|
|
* logging to the console.
|
|
* See the syslog(2) manual page for an explanation of the @type values.
|
|
* @type contains the type of action.
|
|
* Return 0 if permission is granted.
|
|
* @settime:
|
|
* Check permission to change the system time.
|
|
* struct timespec and timezone are defined in include/linux/time.h
|
|
* @ts contains new time
|
|
* @tz contains new timezone
|
|
* Return 0 if permission is granted.
|
|
* @vm_enough_memory:
|
|
* Check permissions for allocating a new virtual mapping.
|
|
* @mm contains the mm struct it is being added to.
|
|
* @pages contains the number of pages.
|
|
* Return 0 if permission is granted.
|
|
*
|
|
* @secid_to_secctx:
|
|
* Convert secid to security context.
|
|
* @secid contains the security ID.
|
|
* @secdata contains the pointer that stores the converted security context.
|
|
* @secctx_to_secid:
|
|
* Convert security context to secid.
|
|
* @secid contains the pointer to the generated security ID.
|
|
* @secdata contains the security context.
|
|
*
|
|
* @release_secctx:
|
|
* Release the security context.
|
|
* @secdata contains the security context.
|
|
* @seclen contains the length of the security context.
|
|
*
|
|
* Security hooks for Audit
|
|
*
|
|
* @audit_rule_init:
|
|
* Allocate and initialize an LSM audit rule structure.
|
|
* @field contains the required Audit action. Fields flags are defined in include/linux/audit.h
|
|
* @op contains the operator the rule uses.
|
|
* @rulestr contains the context where the rule will be applied to.
|
|
* @lsmrule contains a pointer to receive the result.
|
|
* Return 0 if @lsmrule has been successfully set,
|
|
* -EINVAL in case of an invalid rule.
|
|
*
|
|
* @audit_rule_known:
|
|
* Specifies whether given @rule contains any fields related to current LSM.
|
|
* @rule contains the audit rule of interest.
|
|
* Return 1 in case of relation found, 0 otherwise.
|
|
*
|
|
* @audit_rule_match:
|
|
* Determine if given @secid matches a rule previously approved
|
|
* by @audit_rule_known.
|
|
* @secid contains the security id in question.
|
|
* @field contains the field which relates to current LSM.
|
|
* @op contains the operator that will be used for matching.
|
|
* @rule points to the audit rule that will be checked against.
|
|
* @actx points to the audit context associated with the check.
|
|
* Return 1 if secid matches the rule, 0 if it does not, -ERRNO on failure.
|
|
*
|
|
* @audit_rule_free:
|
|
* Deallocate the LSM audit rule structure previously allocated by
|
|
* audit_rule_init.
|
|
* @rule contains the allocated rule
|
|
*
|
|
* This is the main security structure.
|
|
*/
|
|
struct security_operations {
|
|
char name[SECURITY_NAME_MAX + 1];
|
|
|
|
int (*ptrace) (struct task_struct *parent, struct task_struct *child,
|
|
unsigned int mode);
|
|
int (*capget) (struct task_struct *target,
|
|
kernel_cap_t *effective,
|
|
kernel_cap_t *inheritable, kernel_cap_t *permitted);
|
|
int (*capset_check) (struct task_struct *target,
|
|
kernel_cap_t *effective,
|
|
kernel_cap_t *inheritable,
|
|
kernel_cap_t *permitted);
|
|
void (*capset_set) (struct task_struct *target,
|
|
kernel_cap_t *effective,
|
|
kernel_cap_t *inheritable,
|
|
kernel_cap_t *permitted);
|
|
int (*capable) (struct task_struct *tsk, int cap);
|
|
int (*acct) (struct file *file);
|
|
int (*sysctl) (struct ctl_table *table, int op);
|
|
int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
|
|
int (*quota_on) (struct dentry *dentry);
|
|
int (*syslog) (int type);
|
|
int (*settime) (struct timespec *ts, struct timezone *tz);
|
|
int (*vm_enough_memory) (struct mm_struct *mm, long pages);
|
|
|
|
int (*bprm_alloc_security) (struct linux_binprm *bprm);
|
|
void (*bprm_free_security) (struct linux_binprm *bprm);
|
|
void (*bprm_apply_creds) (struct linux_binprm *bprm, int unsafe);
|
|
void (*bprm_post_apply_creds) (struct linux_binprm *bprm);
|
|
int (*bprm_set_security) (struct linux_binprm *bprm);
|
|
int (*bprm_check_security) (struct linux_binprm *bprm);
|
|
int (*bprm_secureexec) (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_kern_mount) (struct super_block *sb, void *data);
|
|
int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
|
|
int (*sb_statfs) (struct dentry *dentry);
|
|
int (*sb_mount) (char *dev_name, struct path *path,
|
|
char *type, unsigned long flags, void *data);
|
|
int (*sb_check_sb) (struct vfsmount *mnt, struct path *path);
|
|
int (*sb_umount) (struct vfsmount *mnt, int flags);
|
|
void (*sb_umount_close) (struct vfsmount *mnt);
|
|
void (*sb_umount_busy) (struct vfsmount *mnt);
|
|
void (*sb_post_remount) (struct vfsmount *mnt,
|
|
unsigned long flags, void *data);
|
|
void (*sb_post_addmount) (struct vfsmount *mnt,
|
|
struct path *mountpoint);
|
|
int (*sb_pivotroot) (struct path *old_path,
|
|
struct path *new_path);
|
|
void (*sb_post_pivotroot) (struct path *old_path,
|
|
struct path *new_path);
|
|
int (*sb_set_mnt_opts) (struct super_block *sb,
|
|
struct security_mnt_opts *opts);
|
|
void (*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 (*inode_alloc_security) (struct inode *inode);
|
|
void (*inode_free_security) (struct inode *inode);
|
|
int (*inode_init_security) (struct inode *inode, struct inode *dir,
|
|
char **name, void **value, size_t *len);
|
|
int (*inode_create) (struct inode *dir,
|
|
struct dentry *dentry, int 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, int mode);
|
|
int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
|
|
int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
|
|
int 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, struct nameidata *nd);
|
|
int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
|
|
int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
|
|
void (*inode_delete) (struct inode *inode);
|
|
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 (*file_mmap) (struct file *file,
|
|
unsigned long reqprot, unsigned long prot,
|
|
unsigned long flags, unsigned long addr,
|
|
unsigned long addr_only);
|
|
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);
|
|
int (*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 (*dentry_open) (struct file *file);
|
|
|
|
int (*task_create) (unsigned long clone_flags);
|
|
int (*task_alloc_security) (struct task_struct *p);
|
|
void (*task_free_security) (struct task_struct *p);
|
|
int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
|
|
int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
|
|
uid_t old_euid, uid_t old_suid, int flags);
|
|
int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, 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_setgroups) (struct group_info *group_info);
|
|
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) (unsigned int resource, struct rlimit *new_rlim);
|
|
int (*task_setscheduler) (struct task_struct *p, int policy,
|
|
struct sched_param *lp);
|
|
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, long *rc_p);
|
|
void (*task_reparent_to_init) (struct task_struct *p);
|
|
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);
|
|
int (*netlink_recv) (struct sk_buff *skb, int cap);
|
|
|
|
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 (*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);
|
|
|
|
#ifdef CONFIG_SECURITY_NETWORK
|
|
int (*unix_stream_connect) (struct socket *sock,
|
|
struct socket *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);
|
|
void (*socket_post_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);
|
|
void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl);
|
|
#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);
|
|
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_security) (struct xfrm_state *x,
|
|
struct xfrm_user_sec_ctx *sec_ctx,
|
|
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,
|
|
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, struct task_struct *tsk, unsigned long flags);
|
|
void (*key_free) (struct key *key);
|
|
int (*key_permission) (key_ref_t key_ref,
|
|
struct task_struct *context,
|
|
key_perm_t 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_init(void);
|
|
extern int security_module_enable(struct security_operations *ops);
|
|
extern int register_security(struct security_operations *ops);
|
|
extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
|
|
struct dentry *parent, void *data,
|
|
const struct file_operations *fops);
|
|
extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
|
|
extern void securityfs_remove(struct dentry *dentry);
|
|
|
|
/* Security operations */
|
|
int security_ptrace(struct task_struct *parent, struct task_struct *child,
|
|
unsigned int mode);
|
|
int security_capget(struct task_struct *target,
|
|
kernel_cap_t *effective,
|
|
kernel_cap_t *inheritable,
|
|
kernel_cap_t *permitted);
|
|
int security_capset_check(struct task_struct *target,
|
|
kernel_cap_t *effective,
|
|
kernel_cap_t *inheritable,
|
|
kernel_cap_t *permitted);
|
|
void security_capset_set(struct task_struct *target,
|
|
kernel_cap_t *effective,
|
|
kernel_cap_t *inheritable,
|
|
kernel_cap_t *permitted);
|
|
int security_capable(struct task_struct *tsk, int cap);
|
|
int security_acct(struct file *file);
|
|
int security_sysctl(struct ctl_table *table, int op);
|
|
int security_quotactl(int cmds, int type, int id, struct super_block *sb);
|
|
int security_quota_on(struct dentry *dentry);
|
|
int security_syslog(int type);
|
|
int security_settime(struct timespec *ts, struct timezone *tz);
|
|
int security_vm_enough_memory(long pages);
|
|
int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
|
|
int security_bprm_alloc(struct linux_binprm *bprm);
|
|
void security_bprm_free(struct linux_binprm *bprm);
|
|
void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe);
|
|
void security_bprm_post_apply_creds(struct linux_binprm *bprm);
|
|
int security_bprm_set(struct linux_binprm *bprm);
|
|
int security_bprm_check(struct linux_binprm *bprm);
|
|
int security_bprm_secureexec(struct linux_binprm *bprm);
|
|
int security_sb_alloc(struct super_block *sb);
|
|
void security_sb_free(struct super_block *sb);
|
|
int security_sb_copy_data(char *orig, char *copy);
|
|
int security_sb_kern_mount(struct super_block *sb, void *data);
|
|
int security_sb_show_options(struct seq_file *m, struct super_block *sb);
|
|
int security_sb_statfs(struct dentry *dentry);
|
|
int security_sb_mount(char *dev_name, struct path *path,
|
|
char *type, unsigned long flags, void *data);
|
|
int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
|
|
int security_sb_umount(struct vfsmount *mnt, int flags);
|
|
void security_sb_umount_close(struct vfsmount *mnt);
|
|
void security_sb_umount_busy(struct vfsmount *mnt);
|
|
void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
|
|
void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
|
|
int security_sb_pivotroot(struct path *old_path, struct path *new_path);
|
|
void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
|
|
int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
|
|
void security_sb_clone_mnt_opts(const struct super_block *oldsb,
|
|
struct super_block *newsb);
|
|
int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
|
|
|
|
int security_inode_alloc(struct inode *inode);
|
|
void security_inode_free(struct inode *inode);
|
|
int security_inode_init_security(struct inode *inode, struct inode *dir,
|
|
char **name, void **value, size_t *len);
|
|
int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
|
|
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, int mode);
|
|
int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
|
|
int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev);
|
|
int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
|
|
struct inode *new_dir, struct dentry *new_dentry);
|
|
int security_inode_readlink(struct dentry *dentry);
|
|
int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd);
|
|
int security_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
|
|
int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
|
|
int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry);
|
|
void security_inode_delete(struct inode *inode);
|
|
int security_inode_setxattr(struct dentry *dentry, const char *name,
|
|
const void *value, size_t size, int flags);
|
|
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 dentry *dentry, const char *name);
|
|
int security_inode_need_killpriv(struct dentry *dentry);
|
|
int security_inode_killpriv(struct dentry *dentry);
|
|
int security_inode_getsecurity(const 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_getsecid(const struct inode *inode, u32 *secid);
|
|
int security_file_permission(struct file *file, int mask);
|
|
int security_file_alloc(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_mmap(struct file *file, unsigned long reqprot,
|
|
unsigned long prot, unsigned long flags,
|
|
unsigned long addr, unsigned long addr_only);
|
|
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);
|
|
int 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_dentry_open(struct file *file);
|
|
int security_task_create(unsigned long clone_flags);
|
|
int security_task_alloc(struct task_struct *p);
|
|
void security_task_free(struct task_struct *p);
|
|
int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
|
|
int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
|
|
uid_t old_suid, int flags);
|
|
int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
|
|
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_task_getsecid(struct task_struct *p, u32 *secid);
|
|
int security_task_setgroups(struct group_info *group_info);
|
|
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_setrlimit(unsigned int resource, struct rlimit *new_rlim);
|
|
int security_task_setscheduler(struct task_struct *p,
|
|
int policy, struct sched_param *lp);
|
|
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 siginfo *info,
|
|
int sig, u32 secid);
|
|
int security_task_wait(struct task_struct *p);
|
|
int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
|
|
unsigned long arg4, unsigned long arg5, long *rc_p);
|
|
void security_task_reparent_to_init(struct task_struct *p);
|
|
void security_task_to_inode(struct task_struct *p, struct inode *inode);
|
|
int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
|
|
void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
|
|
int security_msg_msg_alloc(struct msg_msg *msg);
|
|
void security_msg_msg_free(struct msg_msg *msg);
|
|
int security_msg_queue_alloc(struct msg_queue *msq);
|
|
void security_msg_queue_free(struct msg_queue *msq);
|
|
int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
|
|
int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
|
|
int security_msg_queue_msgsnd(struct msg_queue *msq,
|
|
struct msg_msg *msg, int msqflg);
|
|
int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
|
|
struct task_struct *target, long type, int mode);
|
|
int security_shm_alloc(struct shmid_kernel *shp);
|
|
void security_shm_free(struct shmid_kernel *shp);
|
|
int security_shm_associate(struct shmid_kernel *shp, int shmflg);
|
|
int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
|
|
int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
|
|
int security_sem_alloc(struct sem_array *sma);
|
|
void security_sem_free(struct sem_array *sma);
|
|
int security_sem_associate(struct sem_array *sma, int semflg);
|
|
int security_sem_semctl(struct sem_array *sma, int cmd);
|
|
int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
|
|
unsigned nsops, int alter);
|
|
void security_d_instantiate(struct dentry *dentry, struct inode *inode);
|
|
int security_getprocattr(struct task_struct *p, char *name, char **value);
|
|
int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size);
|
|
int security_netlink_send(struct sock *sk, struct sk_buff *skb);
|
|
int security_netlink_recv(struct sk_buff *skb, int cap);
|
|
int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
|
|
int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
|
|
void security_release_secctx(char *secdata, u32 seclen);
|
|
|
|
#else /* CONFIG_SECURITY */
|
|
struct security_mnt_opts {
|
|
};
|
|
|
|
static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
|
|
{
|
|
}
|
|
|
|
static inline void security_free_mnt_opts(struct security_mnt_opts *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 security_ptrace(struct task_struct *parent,
|
|
struct task_struct *child,
|
|
unsigned int mode)
|
|
{
|
|
return cap_ptrace(parent, child, mode);
|
|
}
|
|
|
|
static inline int security_capget(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_check(struct task_struct *target,
|
|
kernel_cap_t *effective,
|
|
kernel_cap_t *inheritable,
|
|
kernel_cap_t *permitted)
|
|
{
|
|
return cap_capset_check(target, effective, inheritable, permitted);
|
|
}
|
|
|
|
static inline void security_capset_set(struct task_struct *target,
|
|
kernel_cap_t *effective,
|
|
kernel_cap_t *inheritable,
|
|
kernel_cap_t *permitted)
|
|
{
|
|
cap_capset_set(target, effective, inheritable, permitted);
|
|
}
|
|
|
|
static inline int security_capable(struct task_struct *tsk, int cap)
|
|
{
|
|
return cap_capable(tsk, cap);
|
|
}
|
|
|
|
static inline int security_acct(struct file *file)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_sysctl(struct ctl_table *table, int op)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_quotactl(int cmds, int type, int id,
|
|
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 cap_syslog(type);
|
|
}
|
|
|
|
static inline int security_settime(struct timespec *ts, struct timezone *tz)
|
|
{
|
|
return cap_settime(ts, tz);
|
|
}
|
|
|
|
static inline int security_vm_enough_memory(long pages)
|
|
{
|
|
return cap_vm_enough_memory(current->mm, pages);
|
|
}
|
|
|
|
static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
|
|
{
|
|
return cap_vm_enough_memory(mm, pages);
|
|
}
|
|
|
|
static inline int security_bprm_alloc(struct linux_binprm *bprm)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_bprm_free(struct linux_binprm *bprm)
|
|
{ }
|
|
|
|
static inline void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe)
|
|
{
|
|
cap_bprm_apply_creds(bprm, unsafe);
|
|
}
|
|
|
|
static inline void security_bprm_post_apply_creds(struct linux_binprm *bprm)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline int security_bprm_set(struct linux_binprm *bprm)
|
|
{
|
|
return cap_bprm_set_security(bprm);
|
|
}
|
|
|
|
static inline int security_bprm_check(struct linux_binprm *bprm)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_bprm_secureexec(struct linux_binprm *bprm)
|
|
{
|
|
return cap_bprm_secureexec(bprm);
|
|
}
|
|
|
|
static inline int security_sb_alloc(struct super_block *sb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_sb_free(struct super_block *sb)
|
|
{ }
|
|
|
|
static inline int security_sb_copy_data(char *orig, char *copy)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_sb_kern_mount(struct super_block *sb, void *data)
|
|
{
|
|
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(char *dev_name, struct path *path,
|
|
char *type, unsigned long flags,
|
|
void *data)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_sb_check_sb(struct vfsmount *mnt,
|
|
struct path *path)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_sb_umount(struct vfsmount *mnt, int flags)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_sb_umount_close(struct vfsmount *mnt)
|
|
{ }
|
|
|
|
static inline void security_sb_umount_busy(struct vfsmount *mnt)
|
|
{ }
|
|
|
|
static inline void security_sb_post_remount(struct vfsmount *mnt,
|
|
unsigned long flags, void *data)
|
|
{ }
|
|
|
|
static inline void security_sb_post_addmount(struct vfsmount *mnt,
|
|
struct path *mountpoint)
|
|
{ }
|
|
|
|
static inline int security_sb_pivotroot(struct path *old_path,
|
|
struct path *new_path)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_sb_post_pivotroot(struct path *old_path,
|
|
struct path *new_path)
|
|
{ }
|
|
|
|
static inline int security_sb_set_mnt_opts(struct super_block *sb,
|
|
struct security_mnt_opts *opts)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_sb_clone_mnt_opts(const struct super_block *oldsb,
|
|
struct super_block *newsb)
|
|
{ }
|
|
|
|
static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_inode_alloc(struct inode *inode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_inode_free(struct inode *inode)
|
|
{ }
|
|
|
|
static inline int security_inode_init_security(struct inode *inode,
|
|
struct inode *dir,
|
|
char **name,
|
|
void **value,
|
|
size_t *len)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int security_inode_create(struct inode *dir,
|
|
struct dentry *dentry,
|
|
int mode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
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)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_inode_readlink(struct dentry *dentry)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_inode_follow_link(struct dentry *dentry,
|
|
struct nameidata *nd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_inode_permission(struct inode *inode, int mask,
|
|
struct nameidata *nd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_inode_setattr(struct dentry *dentry,
|
|
struct iattr *attr)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_inode_getattr(struct vfsmount *mnt,
|
|
struct dentry *dentry)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_inode_delete(struct inode *inode)
|
|
{ }
|
|
|
|
static inline int security_inode_setxattr(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 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 dentry *dentry,
|
|
const char *name)
|
|
{
|
|
return cap_inode_removexattr(dentry, name);
|
|
}
|
|
|
|
static inline int security_inode_need_killpriv(struct dentry *dentry)
|
|
{
|
|
return cap_inode_need_killpriv(dentry);
|
|
}
|
|
|
|
static inline int security_inode_killpriv(struct dentry *dentry)
|
|
{
|
|
return cap_inode_killpriv(dentry);
|
|
}
|
|
|
|
static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
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_getsecid(const struct inode *inode, u32 *secid)
|
|
{
|
|
*secid = 0;
|
|
}
|
|
|
|
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_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_mmap(struct file *file, unsigned long reqprot,
|
|
unsigned long prot,
|
|
unsigned long flags,
|
|
unsigned long addr,
|
|
unsigned long addr_only)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
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 int security_file_set_fowner(struct file *file)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
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_dentry_open(struct file *file)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_task_create(unsigned long clone_flags)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_task_alloc(struct task_struct *p)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_task_free(struct task_struct *p)
|
|
{ }
|
|
|
|
static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
|
|
int flags)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
|
|
uid_t old_suid, int flags)
|
|
{
|
|
return cap_task_post_setuid(old_ruid, old_euid, old_suid, flags);
|
|
}
|
|
|
|
static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
|
|
int flags)
|
|
{
|
|
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_task_getsecid(struct task_struct *p, u32 *secid)
|
|
{
|
|
*secid = 0;
|
|
}
|
|
|
|
static inline int security_task_setgroups(struct group_info *group_info)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
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_setrlimit(unsigned int resource,
|
|
struct rlimit *new_rlim)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_task_setscheduler(struct task_struct *p,
|
|
int policy,
|
|
struct sched_param *lp)
|
|
{
|
|
return cap_task_setscheduler(p, policy, lp);
|
|
}
|
|
|
|
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 siginfo *info, int sig,
|
|
u32 secid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_task_wait(struct task_struct *p)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_task_prctl(int option, unsigned long arg2,
|
|
unsigned long arg3,
|
|
unsigned long arg4,
|
|
unsigned long arg5, long *rc_p)
|
|
{
|
|
return cap_task_prctl(option, arg2, arg3, arg3, arg5, rc_p);
|
|
}
|
|
|
|
static inline void security_task_reparent_to_init(struct task_struct *p)
|
|
{
|
|
cap_task_reparent_to_init(p);
|
|
}
|
|
|
|
static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
|
|
{ }
|
|
|
|
static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
|
|
short flag)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
|
|
{
|
|
*secid = 0;
|
|
}
|
|
|
|
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 msg_queue *msq)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_msg_queue_free(struct msg_queue *msq)
|
|
{ }
|
|
|
|
static inline int security_msg_queue_associate(struct msg_queue *msq,
|
|
int msqflg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
|
|
struct msg_msg *msg, int msqflg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
|
|
struct msg_msg *msg,
|
|
struct task_struct *target,
|
|
long type, int mode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_shm_alloc(struct shmid_kernel *shp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_shm_free(struct shmid_kernel *shp)
|
|
{ }
|
|
|
|
static inline int security_shm_associate(struct shmid_kernel *shp,
|
|
int shmflg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_shm_shmat(struct shmid_kernel *shp,
|
|
char __user *shmaddr, int shmflg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_sem_alloc(struct sem_array *sma)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_sem_free(struct sem_array *sma)
|
|
{ }
|
|
|
|
static inline int security_sem_associate(struct sem_array *sma, int semflg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_sem_semctl(struct sem_array *sma, int cmd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_sem_semop(struct sem_array *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_getprocattr(struct task_struct *p, char *name, char **value)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
|
|
{
|
|
return cap_netlink_send(sk, skb);
|
|
}
|
|
|
|
static inline int security_netlink_recv(struct sk_buff *skb, int cap)
|
|
{
|
|
return cap_netlink_recv(skb, cap);
|
|
}
|
|
|
|
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,
|
|
mode_t mode,
|
|
struct dentry *parent,
|
|
void *data,
|
|
const struct file_operations *fops)
|
|
{
|
|
return ERR_PTR(-ENODEV);
|
|
}
|
|
|
|
static inline void securityfs_remove(struct dentry *dentry)
|
|
{
|
|
}
|
|
|
|
static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int security_secctx_to_secid(const char *secdata,
|
|
u32 seclen,
|
|
u32 *secid)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline void security_release_secctx(char *secdata, u32 seclen)
|
|
{
|
|
}
|
|
#endif /* CONFIG_SECURITY */
|
|
|
|
#ifdef CONFIG_SECURITY_NETWORK
|
|
|
|
int security_unix_stream_connect(struct socket *sock, struct socket *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_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);
|
|
void security_socket_post_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, char __user *optval,
|
|
int __user *optlen, unsigned 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(struct sock *sk, struct flowi *fl);
|
|
void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
|
|
void security_sock_graft(struct sock*sk, struct socket *parent);
|
|
int security_inet_conn_request(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);
|
|
|
|
#else /* CONFIG_SECURITY_NETWORK */
|
|
static inline int security_unix_stream_connect(struct socket *sock,
|
|
struct socket *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_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 void security_socket_post_accept(struct socket *sock,
|
|
struct socket *newsock)
|
|
{
|
|
}
|
|
|
|
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, char __user *optval,
|
|
int __user *optlen, unsigned 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(struct sock *sk, struct flowi *fl)
|
|
{
|
|
}
|
|
|
|
static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
|
|
{
|
|
}
|
|
|
|
static inline void security_sock_graft(struct sock *sk, struct socket *parent)
|
|
{
|
|
}
|
|
|
|
static inline int security_inet_conn_request(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)
|
|
{
|
|
}
|
|
#endif /* CONFIG_SECURITY_NETWORK */
|
|
|
|
#ifdef CONFIG_SECURITY_NETWORK_XFRM
|
|
|
|
int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx);
|
|
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, u8 dir);
|
|
int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
|
|
struct xfrm_policy *xp, struct flowi *fl);
|
|
int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
|
|
void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
|
|
|
|
#else /* CONFIG_SECURITY_NETWORK_XFRM */
|
|
|
|
static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
|
|
{
|
|
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, u8 dir)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
|
|
struct xfrm_policy *xp, struct flowi *fl)
|
|
{
|
|
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 *fl)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_SECURITY_NETWORK_XFRM */
|
|
|
|
#ifdef CONFIG_KEYS
|
|
#ifdef CONFIG_SECURITY
|
|
|
|
int security_key_alloc(struct key *key, struct task_struct *tsk, unsigned long flags);
|
|
void security_key_free(struct key *key);
|
|
int security_key_permission(key_ref_t key_ref,
|
|
struct task_struct *context, key_perm_t perm);
|
|
int security_key_getsecurity(struct key *key, char **_buffer);
|
|
|
|
#else
|
|
|
|
static inline int security_key_alloc(struct key *key,
|
|
struct task_struct *tsk,
|
|
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,
|
|
struct task_struct *context,
|
|
key_perm_t perm)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_key_getsecurity(struct key *key, char **_buffer)
|
|
{
|
|
*_buffer = NULL;
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
#endif /* CONFIG_KEYS */
|
|
|
|
#ifdef CONFIG_AUDIT
|
|
#ifdef CONFIG_SECURITY
|
|
int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
|
|
int security_audit_rule_known(struct audit_krule *krule);
|
|
int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
|
|
struct audit_context *actx);
|
|
void security_audit_rule_free(void *lsmrule);
|
|
|
|
#else
|
|
|
|
static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
|
|
void **lsmrule)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_audit_rule_known(struct audit_krule *krule)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
|
|
void *lsmrule, struct audit_context *actx)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void security_audit_rule_free(void *lsmrule)
|
|
{ }
|
|
|
|
#endif /* CONFIG_SECURITY */
|
|
#endif /* CONFIG_AUDIT */
|
|
|
|
#endif /* ! __LINUX_SECURITY_H */
|
|
|