124 lines
4.5 KiB
C
124 lines
4.5 KiB
C
/* $NetBSD: kern_prot_43.c,v 1.1 1995/06/24 20:16:17 christos Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1982, 1986, 1989, 1990, 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
* (c) UNIX System Laboratories, Inc.
|
|
* All or some portions of this file are derived from material licensed
|
|
* to the University of California by American Telephone and Telegraph
|
|
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
|
|
* the permission of UNIX System Laboratories, Inc.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*
|
|
* @(#)kern_prot.c 8.6 (Berkeley) 1/21/94
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/acct.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/ucred.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/timeb.h>
|
|
#include <sys/times.h>
|
|
#include <sys/malloc.h>
|
|
|
|
#include <sys/mount.h>
|
|
#include <sys/syscallargs.h>
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
compat_43_setregid(p, uap, retval)
|
|
register struct proc *p;
|
|
struct compat_43_setregid_args /* {
|
|
syscallarg(int) rgid;
|
|
syscallarg(int) egid;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
struct setegid_args segidargs;
|
|
struct setgid_args sgidargs;
|
|
|
|
/*
|
|
* There are five cases, described above in osetreuid()
|
|
*/
|
|
if (SCARG(uap, rgid) == (gid_t)-1) {
|
|
if (SCARG(uap, egid) == (gid_t)-1)
|
|
return (0); /* -1, -1 */
|
|
SCARG(&segidargs, egid) = SCARG(uap, egid); /* -1, N */
|
|
return (setegid(p, &segidargs, retval));
|
|
}
|
|
if (SCARG(uap, egid) == (gid_t)-1) {
|
|
SCARG(&segidargs, egid) = SCARG(uap, rgid); /* N, -1 */
|
|
return (setegid(p, &segidargs, retval));
|
|
}
|
|
SCARG(&sgidargs, gid) = SCARG(uap, rgid); /* N, N and N, M */
|
|
return (setgid(p, &sgidargs, retval));
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
compat_43_setreuid(p, uap, retval)
|
|
register struct proc *p;
|
|
struct compat_43_setreuid_args /* {
|
|
syscallarg(int) ruid;
|
|
syscallarg(int) euid;
|
|
} */ *uap;
|
|
register_t *retval;
|
|
{
|
|
struct seteuid_args seuidargs;
|
|
struct setuid_args suidargs;
|
|
|
|
/*
|
|
* There are five cases, and we attempt to emulate them in
|
|
* the following fashion:
|
|
* -1, -1: return 0. This is correct emulation.
|
|
* -1, N: call seteuid(N). This is correct emulation.
|
|
* N, -1: if we called setuid(N), our euid would be changed
|
|
* to N as well. the theory is that we don't want to
|
|
* revoke root access yet, so we call seteuid(N)
|
|
* instead. This is incorrect emulation, but often
|
|
* suffices enough for binary compatibility.
|
|
* N, N: call setuid(N). This is correct emulation.
|
|
* N, M: call setuid(N). This is close to correct emulation.
|
|
*/
|
|
if (SCARG(uap, ruid) == (uid_t)-1) {
|
|
if (SCARG(uap, euid) == (uid_t)-1)
|
|
return (0); /* -1, -1 */
|
|
SCARG(&seuidargs, euid) = SCARG(uap, euid); /* -1, N */
|
|
return (seteuid(p, &seuidargs, retval));
|
|
}
|
|
if (SCARG(uap, euid) == (uid_t)-1) {
|
|
SCARG(&seuidargs, euid) = SCARG(uap, ruid); /* N, -1 */
|
|
return (seteuid(p, &seuidargs, retval));
|
|
}
|
|
SCARG(&suidargs, uid) = SCARG(uap, ruid); /* N, N and N, M */
|
|
return (setuid(p, &suidargs, retval));
|
|
}
|