115 lines
3.4 KiB
C
115 lines
3.4 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/user.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/systm.h>
|
|
|
|
void
|
|
setuid()
|
|
{
|
|
struct a {
|
|
uid_t uid;
|
|
} *uap = (struct a*) u.u_arg;
|
|
register uid_t uid;
|
|
|
|
uid = uap->uid;
|
|
if (uid != u.u_ruid && ! suser())
|
|
return;
|
|
/*
|
|
* Everything's okay, do it.
|
|
*/
|
|
u.u_procp->p_uid = uid;
|
|
u.u_uid = uid;
|
|
u.u_ruid = uid;
|
|
u.u_svuid = uid;
|
|
u.u_error = 0;
|
|
}
|
|
|
|
void
|
|
seteuid()
|
|
{
|
|
struct a {
|
|
uid_t euid;
|
|
} *uap = (struct a *)u.u_arg;
|
|
register uid_t euid;
|
|
|
|
euid = uap->euid;
|
|
if (euid != u.u_ruid && euid != u.u_svuid && ! suser())
|
|
return;
|
|
/*
|
|
* Everything's okay, do it.
|
|
*/
|
|
u.u_uid = euid;
|
|
u.u_error = 0;
|
|
}
|
|
|
|
void
|
|
setgid()
|
|
{
|
|
struct a {
|
|
gid_t gid;
|
|
} *uap = (struct a *)u.u_arg;
|
|
register gid_t gid;
|
|
|
|
gid = uap->gid;
|
|
if (gid != u.u_rgid && ! suser())
|
|
return;
|
|
|
|
u.u_groups[0] = gid; /* effective gid is u_groups[0] */
|
|
u.u_rgid = gid;
|
|
u.u_svgid = gid;
|
|
u.u_error = 0;
|
|
}
|
|
|
|
void
|
|
setegid()
|
|
{
|
|
struct a {
|
|
gid_t egid;
|
|
} *uap = (struct a *)u.u_arg;
|
|
register gid_t egid;
|
|
|
|
egid = uap->egid;
|
|
if (egid != u.u_rgid && egid != u.u_svgid && ! suser())
|
|
return;
|
|
|
|
u.u_groups[0] = egid;
|
|
u.u_error = 0;
|
|
}
|