f11ec79842
code in this file was written by Robert N. M. Waston. Move cr_can* prototypes from sys/systm.h to sys/proc.h Reported by: rwatson Reviewed by: rwatson Approved by: sjg (mentor) Differential Revision: https://reviews.freebsd.org/D7345
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/*-
|
|
* Copyright (c) 2000-2001 Robert N. M. Watson.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* System calls related to processes and protection
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_compat.h"
|
|
#include "opt_inet.h"
|
|
#include "opt_inet6.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/jail.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_pcb.h>
|
|
#include <netinet/in_systm.h>
|
|
|
|
#include <security/audit/audit.h>
|
|
#include <security/mac/mac_framework.h>
|
|
|
|
/*-
|
|
* Determine whether the subject represented by cred can "see" a socket.
|
|
* Returns: 0 for permitted, ENOENT otherwise.
|
|
*/
|
|
int
|
|
cr_canseeinpcb(struct ucred *cred, struct inpcb *inp)
|
|
{
|
|
int error;
|
|
|
|
error = prison_check(cred, inp->inp_cred);
|
|
if (error)
|
|
return (ENOENT);
|
|
#ifdef MAC
|
|
INP_LOCK_ASSERT(inp);
|
|
error = mac_inpcb_check_visible(cred, inp);
|
|
if (error)
|
|
return (error);
|
|
#endif
|
|
if (cr_canseeotheruids(cred, inp->inp_cred))
|
|
return (ENOENT);
|
|
if (cr_canseeothergids(cred, inp->inp_cred))
|
|
return (ENOENT);
|
|
|
|
return (0);
|
|
}
|