Subject: seteuid(2), hk(4) & xp(4), sethostname(2) (#395 1 of 3)
Index:	sys,lib,man/many 2.11BSD

Description:
	1) seteuid,setegid(2) do not exist (no 'saved ids').

	2) hk(4) doesn't implement disklabels.

	3) xp(4) can put a crash dump on a non-swap partition.

	4) gethostname(2) and sethostname(2) dupliate _sysctl(2) functionality.

Repeat-By:
	1) The saved uid (gid) capability does not exist.  This is new in
	   4.4BSD and has not previously been ported.  In 4.2/3BSD 'setreuid'
	   (gid) were used (imperfectly) to allow a setuid (gid) program to
	   switch back and forth between uids.  With 4.4BSD setreuid was dropped
	   and 'saved ids' were implemented with seteuid/gid.

	2) Observation.  Alternatively give "hk(0,0)" to the standalone 
	   disklabel program and be rewarded with an error.

	3) The check for the partition type when writing the memory image 
	   of a crash dump to a 'xp' drive was made before the pointer to the
	   partition information was calculated.  This could have allowed a
	   crash dump to be written to a file system by mistake.

	4) Note that 'sysctl' has the ability to set and get the hostname.  
	   There is no longer any need for separate system calls.  A previous
	   update placed the 'gethostid' and 'sethostid' with their sysctl
	   counterparts, now it is time to do the same for set/gethosthame

Fix:
	This is #395 and is part 1 of 3.  Make sure you have all 3 parts
	before proceeding.  

	When all three parts have been collected cut where indicated in each 
	and save to tmp files (the instructions assume /tmp/395, /tmp/396 and
	/tmp/397 respectively).

	This description and the instructions will not be repeated in the
	next two parts.

	In 4.4BSD the 'setreuid', 'setregid' system calls have been replaced
	with 'seteuid', 'setegid'.  The new system calls allow a setuid/gid
	(or root) process to change user (group) id's more easily (and
	completely) than the old system calls.  The old 'setrgid', and 
	'setruid' system calls have been deprecated and while present for
	now (as 'compatibility' routines) will go away eventually.

	The RK06/7 ('hk') drivers do not implement disklabels.  The changes
	in this update kit have NOT been tested.  There is a good chance that
	everything will work the first time but if there are problems (does
	anyone still have RK06/7 drives in working order??) a future update
	will be posted.

	The SMD driver (xp(4)) had an error in the check for a valid partition
	type when performing a crash dump.  Only a partition of type 'swap'
	may be used.  The pointer to the partition information was calculated
	a couple lines too late.  This could have resulted in a crash dump
	image being written over the top of a filesystem.

	Sysctl(2) is a "super syscall" that has subsumed several other system
	calls in the past.  Since sysctl(2) has the ability to set/get the
	hostname there is no reason to retain the individual system calls
	that previously performed that task.

	A number of system calls (setreuid, usw.) have been placed into
	'COMPAT-43' status.  This means that the kernel is TEMPORARILY a bit
	mroe 'bloated' than usual because old binaries which use the old
	system calls will still continue to work correctly.  EVENTUALLY (when
	a 'make world' is done and the entire system regenerated from sources)
	all of the compatibility calls will go away.  The goal is to within
	the next 6 months (and before another year goes by) to beging removing
	compatibility syscalls to reduce the size of the kernel.

	NOTE:  This is a moderately large update.  MANY new manpages and source
	       files are added to the system.  ALSO, quite a number of OLD
	       files are REMOVED.

	       If you feel a bit nervous about burning down (removing or
	       overwriting) existing files and would like to save existing 
	       files these are the commands issued during the REMOVE script:

rm -f /usr/man/cat2/getegid.0
rm -f /usr/man/cat2/geteuid.0
rm -f /usr/man/cat2/getgid.0
rm -f /usr/man/cat2/getuid.0
rm -f /usr/man/cat2/setregid.0
rm -f /usr/man/cat2/setreuid.0
rm -f /usr/man/cat3/setegid.0
rm -f /usr/man/cat3/seteuid.0
rm -f /usr/man/cat3/setgid.0
rm -f /usr/man/cat3/setrgid.0
rm -f /usr/man/cat3/setruid.0
rm -f /usr/man/cat3/setuid.0
rm -f /usr/src/lib/libc/gen/setegid.c
rm -f /usr/src/lib/libc/gen/seteuid.c
rm -f /usr/src/lib/libc/gen/setgid.c
rm -f /usr/src/lib/libc/gen/setrgid.c
rm -f /usr/src/lib/libc/gen/setruid.c
rm -f /usr/src/lib/libc/gen/setuid.c
rm -f /usr/src/man/man2/getgid.2
rm -f /usr/src/man/man2/getuid.2
rm -f /usr/src/man/man2/setregid.2
rm -f /usr/src/man/man2/setreuid.2
rm -f /usr/src/man/man3/setuid.3

	The following files are PATCHED by this update kit:


/usr/include/syscall.h
/usr/src/bin/adb/opset.c
/usr/src/bin/ps.c
/usr/src/lib/libc/compat-43/Makefile
/usr/src/lib/libc/gen/Makefile
/usr/src/lib/libc/pdp/sys/Makefile
/usr/src/man/man2/Makefile
/usr/src/man/man3/Makefile
/usr/src/new/crash/crash.c
/usr/src/share/adb/u
/usr/src/sys/GENERIC/Make.sys
/usr/src/sys/GENERIC/Makefile
/usr/src/sys/conf/Make.nsunix
/usr/src/sys/conf/Make.sunix
/usr/src/sys/conf/Make.sys
/usr/src/sys/conf/Make.unix
/usr/src/sys/h/acct.h
/usr/src/sys/h/user.h
/usr/src/sys/pdp/conf.c
/usr/src/sys/pdpstand/conf.c
/usr/src/sys/pdpstand/hk.c
/usr/src/sys/pdpstand/rl.c
/usr/src/sys/pdpuba/hk.c
/usr/src/sys/pdpuba/xp.c
/usr/src/sys/sys/init_sysent.c
/usr/src/sys/sys/kern_exec.c
/usr/src/sys/sys/kern_fork.c
/usr/src/sys/sys/kern_prot.c
/usr/src/sys/sys/kern_sig.c
/usr/src/sys/sys/syscalls.c
/usr/src/sys/sys/ufs_fio.c
/usr/src/sys/sys/ufs_syscalls.c
/usr/src/ucb/Mail/fio.c
/usr/src/usr.sbin/pstat/pstat.c
/VERSION

	These are the NEW files added to the system:

/usr/src/lib/libc/compat-43/setregid.c
/usr/src/lib/libc/compat-43/setreuid.c
/usr/src/lib/libc/compat-43/setrgid.c
/usr/src/lib/libc/compat-43/setruid.c
/usr/src/lib/libc/gen/gethostname.c
/usr/src/lib/libc/gen/sethostname.c
/usr/src/man/man2/getgid.2
/usr/src/man/man2/getuid.2
/usr/src/man/man2/setregid.2
/usr/src/man/man2/setreuid.2
/usr/src/man/man2/setuid.2
/usr/src/man/man3/setruid.3
/usr/src/sys/sys/kern_prot2.c

	As you can see there is a new file (kern_prot2.c) added to the kernel
	during the update.  This is a bit of a PAIN because existing kernel
	build directories need to be updated for each kernel (except GENERIC
	which is done for you during the patch processing) on the system

	ALSO, the 'u' area (user process context area used by the kernel) 
	changes (to make room for the saved uid/gid information).  This means
	that applications that deal with the 'u' area need to be recompiled
	(the debugger 'adb', 'ps', and a couple others). 

	Installing The Update
	=====================

	Make sure you have all three parts (395, 396, 397) and have cut where
	indicated in and saved the results to /tmp/395 /tmp/396 and /tmp/397.

	The '395.rm' script MUST be run first otherwise the 'shar' archive
	unpacking will fail when trying to create some of the files.

	Then

		cd /tmp
		sh 395
		chmod +x 395.rm
		./395.rm
		sh 395.shar
		patch -p0 < 396
		patch -p0 < 397

	Now the kernel(s) are updated.  You do NOT have to do anything with
	GENERIC (but it can be used as a guide) but all other kernels which
	have been configured on the system need to be updated.  The file
	'Makefile' and 'Make.sys' need to be updated.

		cd /sys
		foreach file (YOUR_KERNEL_1 YOUR_KERNEL_2 ...)
		    cp conf/Make.sys $file/Make.sys
		    EDIT $file/Makefile
		end

	The line with "EDIT" means to add 'kern_prot2.o' to the the kernel.
	Any place (an overlay _or_ the base segment) that has 496 bytes of
	room is suitable.  The chances that kern_prot2.o will fit in the
	same list of files as kern_prot.o is good so check that location first.

	NOTE:  adding the compatibility system calls caused the kernel to grow
	       a little bit.  It may be necessary to adjust the overlay layout.

	A new kernel is now compiled, installed and the system rebooted.  The
	following assumes a 'networking' kernel is being built.  If this is
	not the case omit references to 'netnix':

		cd /sys/YOUR_KERNEL
		make clean
		make
		cp -p /unix /ounix
		cp -p /netnix /onetnix
		install -m 744 unix netnix /
		reboot

	If you keep an emergency GENERIC kernel around (as /genunix perhaps)
	then now is a good time to rebuild and install it:

		cd /sys/GENERIC
		make clean
		make
		mv unix /genunix

	The C library and manpages are the next items to be rebuilt and 
	installed.  Not all of the manpages changed but it is easier (if a 
	bit more time consuming) to let the makefile do the creation of all
	the links between the manpages:

		cd /usr/src/lib/libc
		make clean
		make
		make install

		cd /usr/src/man/man2
		make clean
		make
		make install
		make clean

		cd /usr/src/man/man3
		make clean
		make 
		make install
		make clean

	Several applications that are aware of the 'u' structure now need to 
	be built:

		cd /usr/src/bin
		make ps
		install -s -m 2755 -g kmem ps /bin/ps

		cd /usr/src/bin/adb
		make  clean
		make 
		make install

		cd /usr/src/usr.sbin/pstat
		make clean
		make
		make install

		cd /usr/src/libexec/identd
		make clean
		make
		make install

		cd /usr/src/usr.bin/fstat
		make clean
		make
		make install

		cd /usr/src/ucb
		make w gcore
		install -s -m 2755 -g kmem w /usr/ucb/w
		rm /usr/ucb/uptime
		ln /usr/ucb/w /usr/ucb/uptime
		install -s -m 2755 -g kmem gcore /usr/ucb/gcore

	Lastly the 'boot' program:

		cd /sys/pdpstand
		make clean
		make
		install -c -s -m 700 boot /boot

	If you keep a copy of the 'standalone disklabel' program handy in /
	then:
		
		install -c -s -m 700 disklabel /disklabel

	This would be a good time to create a boot tape containing the
	standalone utilities and a dump of the root filesystem.  You never
	know when it will come in handy when recovering from a disaster OR
	if you need to install 2.11BSD on another system:

		(place a tape in the drive, assumed to be /dev/nrmt0)

		./maketape /dev/nrmt0 maketape.data
		dump 0f /dev/rmt0 /

	The 'ps' database needs rebuilding:

		ps -U

	Lastly the manpage database (used by 'whatis') is rebuilt:

		/usr/sbin/makewhatis

	That's all.  You're done.  Enjoy.

	As always this and previous updates to 2.11BSD are available via
	anonymous FTP to either FTP.IIPO.GTEGSC.COM or MOE.2BSD.COM in the
	directory /pub/2.11BSD.

============================cut here========================
#!/bin/sh
# This is a shell archive (produced by GNU sharutils 4.2).
# To extract the files from this archive, save it to some FILE, remove
# everything before the `!/bin/sh' line above, then type `sh FILE'.
#
# Made on 1997-12-27 13:52 PST by <sms@moe.2bsd.com>.
# Source directory was `/users/sms/KIT'.
#
# Existing files will *not* be overwritten unless `-c' is specified.
# This format requires very little intelligence at unshar time.
# "if test", "echo", "mkdir", and "sed" may be needed.
#
# This shar contains:
# length mode       name
# ------ ---------- ------------------------------------------
#    767 -rwxr-xr-x 395.rm
#  43458 -rw-r--r-- 395.shar
#
echo=echo
if mkdir _sh22977; then
  $echo 'x -' 'creating lock directory'
else
  $echo 'failed to create lock directory'
  exit 1
fi
# ============= 395.rm ==============
if test -f '395.rm' && test "$first_param" != -c; then
  $echo 'x -' SKIPPING '395.rm' '(file already exists)'
else
  $echo 'x -' extracting '395.rm' '(text)'
  sed 's/^X//' << 'SHAR_EOF' > '395.rm' &&
X#!/bin/sh -x
X
Xrm -f /usr/man/cat2/getegid.0
Xrm -f /usr/man/cat2/geteuid.0
Xrm -f /usr/man/cat2/getgid.0
Xrm -f /usr/man/cat2/getuid.0
Xrm -f /usr/man/cat2/setregid.0
Xrm -f /usr/man/cat2/setreuid.0
Xrm -f /usr/man/cat3/setegid.0
Xrm -f /usr/man/cat3/seteuid.0
Xrm -f /usr/man/cat3/setgid.0
Xrm -f /usr/man/cat3/setrgid.0
Xrm -f /usr/man/cat3/setruid.0
Xrm -f /usr/man/cat3/setuid.0
Xrm -f /usr/src/lib/libc/gen/setegid.c
Xrm -f /usr/src/lib/libc/gen/seteuid.c
Xrm -f /usr/src/lib/libc/gen/setgid.c
Xrm -f /usr/src/lib/libc/gen/setrgid.c
Xrm -f /usr/src/lib/libc/gen/setruid.c
Xrm -f /usr/src/lib/libc/gen/setuid.c
Xrm -f /usr/src/man/man2/getgid.2
Xrm -f /usr/src/man/man2/getuid.2
Xrm -f /usr/src/man/man2/setregid.2
Xrm -f /usr/src/man/man2/setreuid.2
Xrm -f /usr/src/man/man3/setuid.3
SHAR_EOF
  : || $echo 'restore of' '395.rm' 'failed'
fi
# ============= 395.shar ==============
if test -f '395.shar' && test "$first_param" != -c; then
  $echo 'x -' SKIPPING '395.shar' '(file already exists)'
else
  $echo 'x -' extracting '395.shar' '(text)'
  sed 's/^X//' << 'SHAR_EOF' > '395.shar' &&
X#! /bin/sh
X# This is a shell archive, meaning:
X# 1. Remove everything above the #! /bin/sh line.
X# 2. Save the resulting text in a file.
X# 3. Execute the file with /bin/sh (not csh) to create:
X#	/usr/src/lib/libc/compat-43/setregid.c
X#	/usr/src/lib/libc/compat-43/setreuid.c
X#	/usr/src/lib/libc/compat-43/setrgid.c
X#	/usr/src/lib/libc/compat-43/setruid.c
X#	/usr/src/lib/libc/gen/gethostname.c
X#	/usr/src/lib/libc/gen/sethostname.c
X#	/usr/src/man/man2/getgid.2
X#	/usr/src/man/man2/getuid.2
X#	/usr/src/man/man2/setregid.2
X#	/usr/src/man/man2/setreuid.2
X#	/usr/src/man/man2/setuid.2
X#	/usr/src/man/man3/setruid.3
X#	/usr/src/sys/sys/kern_prot2.c
X# This archive created: Tue Dec 16 20:59:36 1997
Xexport PATH; PATH=/bin:/usr/bin:$PATH
Xif test -f '/usr/src/lib/libc/compat-43/setregid.c'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/lib/libc/compat-43/setregid.c'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/lib/libc/compat-43/setregid.c'
XZ/*
XZ * Copyright (c) 1993
XZ *	The Regents of the University of California.  All rights reserved.
XZ *
XZ * Redistribution and use in source and binary forms, with or without
XZ * modification, are permitted provided that the following conditions
XZ * are met:
XZ * 1. Redistributions of source code must retain the above copyright
XZ *    notice, this list of conditions and the following disclaimer.
XZ * 2. Redistributions in binary form must reproduce the above copyright
XZ *    notice, this list of conditions and the following disclaimer in the
XZ *    documentation and/or other materials provided with the distribution.
XZ * 3. All advertising materials mentioning features or use of this software
XZ *    must display the following acknowledgement:
XZ *	This product includes software developed by the University of
XZ *	California, Berkeley and its contributors.
XZ * 4. Neither the name of the University nor the names of its contributors
XZ *    may be used to endorse or promote products derived from this software
XZ *    without specific prior written permission.
XZ *
XZ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ * SUCH DAMAGE.
XZ */
XZ
XZ#if defined(LIBC_SCCS) && !defined(lint)
XZstatic char sccsid[] = "@(#)setregid.c	8.1.1 (2.11BSD) 1997/11/26";
XZ#endif /* LIBC_SCCS and not lint */
XZ
XZ#include <sys/types.h>
XZ#include <errno.h>
XZ
XZint
XZsetregid(rgid, egid)
XZ	register gid_t rgid, egid;
XZ{
XZ	static gid_t savedgid = -1;
XZ	
XZ	if (savedgid == -1)
XZ		savedgid = getegid();
XZ	/*
XZ	 * we assume that the intent here is to be able to
XZ	 * get back rgid priviledge. So we make sure that
XZ	 * we will be able to do so, but do not actually
XZ	 * set the rgid.
XZ	 */
XZ	if (rgid != -1 && rgid != getgid() && rgid != savedgid) {
XZ		errno = EPERM;
XZ		return (-1);
XZ	}
XZ	if (egid != -1 && setegid(egid) < 0)
XZ		return (-1);
XZ	return (0);
XZ}
XSHAR_EOF
Xchmod 644 '/usr/src/lib/libc/compat-43/setregid.c'
Xfi
Xif test -f '/usr/src/lib/libc/compat-43/setreuid.c'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/lib/libc/compat-43/setreuid.c'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/lib/libc/compat-43/setreuid.c'
XZ/*
XZ * Copyright (c) 1992, 1993
XZ *	The Regents of the University of California.  All rights reserved.
XZ *
XZ * Redistribution and use in source and binary forms, with or without
XZ * modification, are permitted provided that the following conditions
XZ * are met:
XZ * 1. Redistributions of source code must retain the above copyright
XZ *    notice, this list of conditions and the following disclaimer.
XZ * 2. Redistributions in binary form must reproduce the above copyright
XZ *    notice, this list of conditions and the following disclaimer in the
XZ *    documentation and/or other materials provided with the distribution.
XZ * 3. All advertising materials mentioning features or use of this software
XZ *    must display the following acknowledgement:
XZ *	This product includes software developed by the University of
XZ *	California, Berkeley and its contributors.
XZ * 4. Neither the name of the University nor the names of its contributors
XZ *    may be used to endorse or promote products derived from this software
XZ *    without specific prior written permission.
XZ *
XZ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ * SUCH DAMAGE.
XZ */
XZ
XZ#if defined(LIBC_SCCS) && !defined(lint)
XZstatic char sccsid[] = "@(#)setreuid.c	8.1.1 (2.11BSD) 1997/11/26";
XZ#endif /* LIBC_SCCS and not lint */
XZ
XZ#include <sys/types.h>
XZ#include <errno.h>
XZ
XZint
XZsetreuid(ruid, euid)
XZ	register uid_t ruid, euid;
XZ{
XZ	static uid_t saveduid = -1;
XZ	
XZ	if (saveduid == -1)
XZ		saveduid = geteuid();
XZ	/*
XZ	 * we assume that the intent here is to be able to
XZ	 * get back ruid priviledge. So we make sure that
XZ	 * we will be able to do so, but do not actually
XZ	 * set the ruid.
XZ	 */
XZ	if (ruid != -1 && ruid != getuid() && ruid != saveduid) {
XZ		errno = EPERM;
XZ		return (-1);
XZ	}
XZ	if (euid != -1 && seteuid(euid) < 0)
XZ		return (-1);
XZ	return (0);
XZ}
XSHAR_EOF
Xchmod 644 '/usr/src/lib/libc/compat-43/setreuid.c'
Xfi
Xif test -f '/usr/src/lib/libc/compat-43/setrgid.c'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/lib/libc/compat-43/setrgid.c'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/lib/libc/compat-43/setrgid.c'
XZ/*
XZ * Copyright (c) 1983, 1993
XZ *	The Regents of the University of California.  All rights reserved.
XZ *
XZ * Redistribution and use in source and binary forms, with or without
XZ * modification, are permitted provided that the following conditions
XZ * are met:
XZ * 1. Redistributions of source code must retain the above copyright
XZ *    notice, this list of conditions and the following disclaimer.
XZ * 2. Redistributions in binary form must reproduce the above copyright
XZ *    notice, this list of conditions and the following disclaimer in the
XZ *    documentation and/or other materials provided with the distribution.
XZ * 3. All advertising materials mentioning features or use of this software
XZ *    must display the following acknowledgement:
XZ *	This product includes software developed by the University of
XZ *	California, Berkeley and its contributors.
XZ * 4. Neither the name of the University nor the names of its contributors
XZ *    may be used to endorse or promote products derived from this software
XZ *    without specific prior written permission.
XZ *
XZ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ * SUCH DAMAGE.
XZ */
XZ
XZ#if defined(LIBC_SCCS) && !defined(lint)
XZstatic char sccsid[] = "@(#)setrgid.c	8.1.1 (2.11BSD) 1997/11/26";
XZ#endif /* LIBC_SCCS and not lint */
XZ
XZ#include <unistd.h>
XZ
XZint
XZsetrgid(rgid)
XZ	int rgid;
XZ{
XZ
XZ	return (setregid(rgid, -1));
XZ}
XSHAR_EOF
Xchmod 644 '/usr/src/lib/libc/compat-43/setrgid.c'
Xfi
Xif test -f '/usr/src/lib/libc/compat-43/setruid.c'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/lib/libc/compat-43/setruid.c'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/lib/libc/compat-43/setruid.c'
XZ/*
XZ * Copyright (c) 1983, 1993
XZ *	The Regents of the University of California.  All rights reserved.
XZ *
XZ * Redistribution and use in source and binary forms, with or without
XZ * modification, are permitted provided that the following conditions
XZ * are met:
XZ * 1. Redistributions of source code must retain the above copyright
XZ *    notice, this list of conditions and the following disclaimer.
XZ * 2. Redistributions in binary form must reproduce the above copyright
XZ *    notice, this list of conditions and the following disclaimer in the
XZ *    documentation and/or other materials provided with the distribution.
XZ * 3. All advertising materials mentioning features or use of this software
XZ *    must display the following acknowledgement:
XZ *	This product includes software developed by the University of
XZ *	California, Berkeley and its contributors.
XZ * 4. Neither the name of the University nor the names of its contributors
XZ *    may be used to endorse or promote products derived from this software
XZ *    without specific prior written permission.
XZ *
XZ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ * SUCH DAMAGE.
XZ */
XZ
XZ#if defined(LIBC_SCCS) && !defined(lint)
XZstatic char sccsid[] = "@(#)setruid.c	8.1.1 (2.11BSD) 1997/11/26";
XZ#endif /* LIBC_SCCS and not lint */
XZ
XZ#include <unistd.h>
XZ
XZint
XZsetruid(ruid)
XZ	int ruid;
XZ{
XZ
XZ	return (setreuid(ruid, -1));
XZ}
XSHAR_EOF
Xchmod 644 '/usr/src/lib/libc/compat-43/setruid.c'
Xfi
Xif test -f '/usr/src/lib/libc/gen/gethostname.c'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/lib/libc/gen/gethostname.c'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/lib/libc/gen/gethostname.c'
XZ/*
XZ * Copyright (c) 1989, 1993
XZ *	The Regents of the University of California.  All rights reserved.
XZ *
XZ * Redistribution and use in source and binary forms, with or without
XZ * modification, are permitted provided that the following conditions
XZ * are met:
XZ * 1. Redistributions of source code must retain the above copyright
XZ *    notice, this list of conditions and the following disclaimer.
XZ * 2. Redistributions in binary form must reproduce the above copyright
XZ *    notice, this list of conditions and the following disclaimer in the
XZ *    documentation and/or other materials provided with the distribution.
XZ * 3. All advertising materials mentioning features or use of this software
XZ *    must display the following acknowledgement:
XZ *	This product includes software developed by the University of
XZ *	California, Berkeley and its contributors.
XZ * 4. Neither the name of the University nor the names of its contributors
XZ *    may be used to endorse or promote products derived from this software
XZ *    without specific prior written permission.
XZ *
XZ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ * SUCH DAMAGE.
XZ */
XZ
XZ#if defined(LIBC_SCCS) && !defined(lint)
XZstatic char sccsid[] = "@(#)gethostname.c	8.1.1 (2.11BSD) 1997/11/30";
XZ#endif /* LIBC_SCCS and not lint */
XZ
XZ#include <sys/param.h>
XZ#include <sys/sysctl.h>
XZ
XZgethostname(name, namelen)
XZ	char *name;
XZ	int namelen;
XZ{
XZ	int mib[2];
XZ	size_t size;
XZ
XZ	mib[0] = CTL_KERN;
XZ	mib[1] = KERN_HOSTNAME;
XZ	size = namelen;
XZ	if (sysctl(mib, 2, name, &size, NULL, 0) == -1)
XZ		return (-1);
XZ	return (0);
XZ}
XSHAR_EOF
Xchmod 444 '/usr/src/lib/libc/gen/gethostname.c'
Xfi
Xif test -f '/usr/src/lib/libc/gen/sethostname.c'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/lib/libc/gen/sethostname.c'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/lib/libc/gen/sethostname.c'
XZ/*
XZ * Copyright (c) 1989, 1993
XZ *	The Regents of the University of California.  All rights reserved.
XZ *
XZ * Redistribution and use in source and binary forms, with or without
XZ * modification, are permitted provided that the following conditions
XZ * are met:
XZ * 1. Redistributions of source code must retain the above copyright
XZ *    notice, this list of conditions and the following disclaimer.
XZ * 2. Redistributions in binary form must reproduce the above copyright
XZ *    notice, this list of conditions and the following disclaimer in the
XZ *    documentation and/or other materials provided with the distribution.
XZ * 3. All advertising materials mentioning features or use of this software
XZ *    must display the following acknowledgement:
XZ *	This product includes software developed by the University of
XZ *	California, Berkeley and its contributors.
XZ * 4. Neither the name of the University nor the names of its contributors
XZ *    may be used to endorse or promote products derived from this software
XZ *    without specific prior written permission.
XZ *
XZ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ * SUCH DAMAGE.
XZ */
XZ
XZ#if defined(LIBC_SCCS) && !defined(lint)
XZstatic char sccsid[] = "@(#)sethostname.c	8.1.1 (2.11BSD) 1997/11/30";
XZ#endif /* LIBC_SCCS and not lint */
XZ
XZ#include <sys/param.h>
XZ#include <sys/sysctl.h>
XZ
XZsethostname(name, namelen)
XZ	char *name;
XZ	int namelen;
XZ{
XZ	int mib[2];
XZ
XZ	mib[0] = CTL_KERN;
XZ	mib[1] = KERN_HOSTNAME;
XZ	if (sysctl(mib, 2, NULL, NULL, (void *)name, namelen) == -1)
XZ		return (-1);
XZ	return (0);
XZ}
XSHAR_EOF
Xchmod 444 '/usr/src/lib/libc/gen/sethostname.c'
Xfi
Xif test -f '/usr/src/man/man2/getgid.2'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/man/man2/getgid.2'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/man/man2/getgid.2'
XZ.\" Copyright (c) 1983, 1991, 1993
XZ.\"	The Regents of the University of California.  All rights reserved.
XZ.\"
XZ.\" Redistribution and use in source and binary forms, with or without
XZ.\" modification, are permitted provided that the following conditions
XZ.\" are met:
XZ.\" 1. Redistributions of source code must retain the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer.
XZ.\" 2. Redistributions in binary form must reproduce the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer in the
XZ.\"    documentation and/or other materials provided with the distribution.
XZ.\" 3. All advertising materials mentioning features or use of this software
XZ.\"    must display the following acknowledgement:
XZ.\"	This product includes software developed by the University of
XZ.\"	California, Berkeley and its contributors.
XZ.\" 4. Neither the name of the University nor the names of its contributors
XZ.\"    may be used to endorse or promote products derived from this software
XZ.\"    without specific prior written permission.
XZ.\"
XZ.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ.\" SUCH DAMAGE.
XZ.\"
XZ.\"     @(#)getgid.2	8.1.1 (2.11BSD) 1997/12/2
XZ.\"
XZ.TH GETGID 2 "December 2, 1997"
XZ.UC 5
XZ.SH NAME
XZ\fBgetgid\fP, \fBgetegid\fP \- get group process identification
XZ.SH SYNOPSIS
XZ.B #include <sys/types.h>
XZ.sp
XZ.nf
XZ\fIgid_t\fP
XZ\fBgetgid\fP()
XZ.sp
XZ\fIgid_t\fP
XZ\fBgetegid\fP()
XZ.fi
XZ.SH DESCRIPTION
XZThe
XZ.B getgid
XZfunction returns the real group ID of the calling process,
XZ.B getegid
XZreturns the effective group ID of the calling process.
XZ.PP
XZThe real group ID is specified at login time.
XZ.PP
XZThe real group ID is the group of the user who invoked the program.
XZAs the effective group ID gives the process additional permissions
XZduring the execution of
XZ``\fIset-group-ID\fP''
XZmode processes,
XZ.B getgid
XZis used to determine the real-user-id of the calling process.
XZ.SH ERRORS
XZThe
XZ.B getgid
XZand
XZ.B getegid
XZfunctions are always successful, and no return value is reserved to
XZindicate an error.
XZ.SH SEE ALSO
XZgetuid(2), setregid(2), setgid(3)
XZ.SH STANDARDS
XZ.B Getgid
XZand
XZ.B getegid
XZconform to IEEE Std 1003.1-1988 (``POSIX'').
XSHAR_EOF
Xchmod 644 '/usr/src/man/man2/getgid.2'
Xfi
Xif test -f '/usr/src/man/man2/getuid.2'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/man/man2/getuid.2'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/man/man2/getuid.2'
XZ.\" Copyright (c) 1980, 1991, 1993
XZ.\"	The Regents of the University of California.  All rights reserved.
XZ.\"
XZ.\" Redistribution and use in source and binary forms, with or without
XZ.\" modification, are permitted provided that the following conditions
XZ.\" are met:
XZ.\" 1. Redistributions of source code must retain the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer.
XZ.\" 2. Redistributions in binary form must reproduce the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer in the
XZ.\"    documentation and/or other materials provided with the distribution.
XZ.\" 3. All advertising materials mentioning features or use of this software
XZ.\"    must display the following acknowledgement:
XZ.\"	This product includes software developed by the University of
XZ.\"	California, Berkeley and its contributors.
XZ.\" 4. Neither the name of the University nor the names of its contributors
XZ.\"    may be used to endorse or promote products derived from this software
XZ.\"    without specific prior written permission.
XZ.\"
XZ.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ.\" SUCH DAMAGE.
XZ.\"
XZ.\"     @(#)getuid.2	8.1.1 (2.11BSD) 1997/12/2
XZ.\"
XZ.TH GETUID 2 "December 2, 1997"
XZ.UC 5
XZ.SH NAME
XZ\fBgetuid\fP, \fBgeteuid\fP \- get user identification
XZ.SH SYNOPSIS
XZ.nf
XZ.B #include <unistd.h>
XZ.B #include <sys/types.h>
XZ.sp
XZ\fIuid_t\fP
XZ\fBgetuid\fP()
XZ.sp
XZ\fIuid_t\fP
XZ\fBgeteuid\fP()
XZ.fi
XZ.SH DESCRIPTION
XZThe
XZ.B getuid
XZfunction returns the real user ID of the calling process.
XZThe
XZ.B geteuid
XZfunction
XZreturns the effective user ID of the calling process.
XZ.PP
XZThe real user ID is that of the user who has invoked the program.
XZAs the effective user ID
XZgives the process additional permissions during
XZexecution of ``\fIset-user-ID\fP''
XZmode processes,
XZ.B getuid
XZis used to determine the real-user-id of the calling process.
XZ.SH ERRORS
XZThe
XZ.B getuid
XZand
XZ.B geteuid
XZfunctions are always successful, and no return value is reserved to
XZindicate an error.
XZ.SH SEE ALSO
XZgetgid(2), setreuid(2)
XZ.SH STANDARDS
XZ.B Geteuid
XZand
XZ.B getuid
XZconform to IEEE Std 1003.1-1988 (``POSIX'').
XSHAR_EOF
Xchmod 644 '/usr/src/man/man2/getuid.2'
Xfi
Xif test -f '/usr/src/man/man2/setregid.2'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/man/man2/setregid.2'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/man/man2/setregid.2'
XZ.\" Copyright (c) 1980, 1991, 1993, 1994
XZ.\"	The Regents of the University of California.  All rights reserved.
XZ.\"
XZ.\" Redistribution and use in source and binary forms, with or without
XZ.\" modification, are permitted provided that the following conditions
XZ.\" are met:
XZ.\" 1. Redistributions of source code must retain the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer.
XZ.\" 2. Redistributions in binary form must reproduce the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer in the
XZ.\"    documentation and/or other materials provided with the distribution.
XZ.\" 3. All advertising materials mentioning features or use of this software
XZ.\"    must display the following acknowledgement:
XZ.\"	This product includes software developed by the University of
XZ.\"	California, Berkeley and its contributors.
XZ.\" 4. Neither the name of the University nor the names of its contributors
XZ.\"    may be used to endorse or promote products derived from this software
XZ.\"    without specific prior written permission.
XZ.\"
XZ.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ.\" SUCH DAMAGE.
XZ.\"
XZ.\"     @(#)setregid.2	8.2.1 (2.11BSD) 1997/12/2
XZ.\"
XZ.TH SETREGID 2 "December 2, 1997"
XZ.UC 5
XZ.SH NAME
XZ\fBsetregid\fP \- set real and effective group ID
XZ.SH SYNOPSIS
XZ.B #include <unistd.h>
XZ.sp
XZ.nf
XZ\fIint\fP
XZ\fBsetregid(rgid, egid)\fP
XZ\ \ \ \ \ gid_t rgid, egid
XZ.fi
XZ.SH DESCRIPTION
XZThe real and effective group ID's of the current process
XZare set to the arguments.
XZUnprivileged users may change the real group
XZID to the effective group ID and vice-versa; only the super-user may
XZmake other changes.
XZ.PP
XZSupplying a value of -1 for either the real or effective
XZgroup ID forces the system to substitute the current
XZID in place of the -1 parameter.
XZ.PP
XZThe
XZ.B setregid
XZfunction was intended to allow swapping
XZthe real and effective group IDs
XZin set-group-ID programs to temporarily relinquish the set-group-ID value.
XZThis function did not work correctly,
XZand its purpose is now better served by the use of the
XZ.B setegid
XZfunction (see setuid(2)).
XZ.PP
XZWhen setting the real and effective group IDs to the same value,
XZthe standard
XZ.B setgid
XZfunction is preferred.
XZ.SH RETURN VALUES
XZUpon successful completion, a value of 0 is returned.  Otherwise,
XZa value of -1 is returned and
XZ.I errno
XZis set to indicate the error.
XZ.SH ERRORS
XZ.TP 10
XZEPERM
XZThe current process is not the super-user and a change
XZother than changing the effective group-id to the real group-id
XZwas specified.
XZ.SH SEE ALSO
XZgetgid(2), setegid(2), setgid(2), setuid(2)
XZ.SH HISTORY
XZThe
XZ.B setregid
XZfunction call appeared in 4.2BSD
XZand was dropped in 4.4BSD.
XSHAR_EOF
Xchmod 644 '/usr/src/man/man2/setregid.2'
Xfi
Xif test -f '/usr/src/man/man2/setreuid.2'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/man/man2/setreuid.2'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/man/man2/setreuid.2'
XZ.\" Copyright (c) 1980, 1991, 1993, 1994
XZ.\"	The Regents of the University of California.  All rights reserved.
XZ.\"
XZ.\" Redistribution and use in source and binary forms, with or without
XZ.\" modification, are permitted provided that the following conditions
XZ.\" are met:
XZ.\" 1. Redistributions of source code must retain the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer.
XZ.\" 2. Redistributions in binary form must reproduce the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer in the
XZ.\"    documentation and/or other materials provided with the distribution.
XZ.\" 3. All advertising materials mentioning features or use of this software
XZ.\"    must display the following acknowledgement:
XZ.\"	This product includes software developed by the University of
XZ.\"	California, Berkeley and its contributors.
XZ.\" 4. Neither the name of the University nor the names of its contributors
XZ.\"    may be used to endorse or promote products derived from this software
XZ.\"    without specific prior written permission.
XZ.\"
XZ.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ.\" SUCH DAMAGE.
XZ.\"
XZ.\"     @(#)setreuid.2	8.2.1 (2.11BSD) 1997/12/3
XZ.\"
XZ.TH SETREUID 2 "December 3, 1997"
XZ.UC 4
XZ.SH NAME
XZ\fBsetreuid\fP \- set real and effective user ID's
XZ.SH SYNOPSIS
XZ.B #include <unistd.h>
XZ.nf
XZ.sp
XZ\fIint\fP
XZ\fBsetreuid\fP(ruid, euid)
XZ\ \ \ \ uid_t ruid, euid
XZ.fi
XZ.SH DESCRIPTION
XZThe real and effective user IDs of the
XZcurrent process are set according to the arguments.
XZIf
XZ.I ruid
XZor 
XZ.I euid
XZis -1, the current uid is filled in by the system.
XZUnprivileged users may change the real user
XZID to the effective user ID and vice-versa; only the super-user may
XZmake other changes.
XZ.PP
XZThe
XZ.B setreuid
XZfunction has been used to swap the real and effective user IDs
XZin set-user-ID programs to temporarily relinquish the set-user-ID value.
XZThis purpose is now better served by the use of the
XZ.B seteuid
XZfunction (see setuid(2)).
XZ.PP
XZWhen setting the real and effective user IDs to the same value,
XZthe standard
XZ.B setuid
XZfunction is preferred.
XZ.SH RETURN VALUES
XZUpon successful completion, a value of 0 is returned.  Otherwise,
XZa value of -1 is returned and
XZ.I errno
XZis set to indicate the error.
XZ.SH ERRORS
XZ.TP 10
XZEPERM
XZThe current process is not the super-user and a change
XZother than changing the effective user-id to the real user-id
XZwas specified.
XZ.SH SEE ALSO
XZgetuid(2), seteuid(2), setuid(2)
XZ.SH HISTORY
XZThe
XZ.B setreuid
XZfunction call appeared in 4.2BSD
XZand was dropped in
XZ4.4BSD.
XSHAR_EOF
Xchmod 644 '/usr/src/man/man2/setreuid.2'
Xfi
Xif test -f '/usr/src/man/man2/setuid.2'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/man/man2/setuid.2'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/man/man2/setuid.2'
XZ.\" Copyright (c) 1983, 1991, 1993
XZ.\"	The Regents of the University of California.  All rights reserved.
XZ.\"
XZ.\" Redistribution and use in source and binary forms, with or without
XZ.\" modification, are permitted provided that the following conditions
XZ.\" are met:
XZ.\" 1. Redistributions of source code must retain the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer.
XZ.\" 2. Redistributions in binary form must reproduce the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer in the
XZ.\"    documentation and/or other materials provided with the distribution.
XZ.\" 3. All advertising materials mentioning features or use of this software
XZ.\"    must display the following acknowledgement:
XZ.\"	This product includes software developed by the University of
XZ.\"	California, Berkeley and its contributors.
XZ.\" 4. Neither the name of the University nor the names of its contributors
XZ.\"    may be used to endorse or promote products derived from this software
XZ.\"    without specific prior written permission.
XZ.\"
XZ.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ.\" SUCH DAMAGE.
XZ.\"
XZ.\"     @(#)setuid.2	8.1.1 (2.11BSD) 1997/12/3
XZ.\"
XZ.TH SETUID 2 "December 3, 1997"
XZ.UC 5
XZ.SH NAME
XZ\fBsetuid\fP, \fBseteuid\fP,\fBsetgid\fP,\fBsetegid\fP \- set user and group ID
XZ.SH SYNOPSIS
XZ.nf
XZ.B #include <sys/types.h>
XZ.B #include <unistd.h>
XZ.sp
XZ\fIint\fP
XZ\fBsetuid\fP(uid)
XZ\ \ \ \ uid_t uid
XZ.sp
XZ\fIint\fP
XZ\fBseteuid\fP(euid)
XZ\ \ \ \ uid_t euid
XZ.sp
XZ\fIint\fP
XZ\fBsetgid\fP(gid)
XZ\ \ \ \ gid_t gid
XZ.sp
XZ\fIint\fP
XZ\fBsetegid\fP(egid)
XZ\ \ \ \ gid_t egid
XZ.fi
XZ.SH DESCRIPTION
XZThe
XZ.B setuid
XZfunction
XZsets the real and effective
XZuser IDs and the saved set-user-ID of the current process
XZto the specified value.
XZThe
XZ.B setuid
XZfunction is permitted if the specified ID is equal to the real user ID
XZof the process, or if the effective user ID is that of the super user.
XZ.PP
XZThe
XZ.B setgid
XZfunction
XZsets the real and effective
XZgroup IDs and the saved set-group-ID of the current process
XZto the specified value.
XZThe
XZ.B setgid
XZfunction is permitted if the specified ID is equal to the real group ID
XZof the process, or if the effective user ID is that of the super user.
XZ.PP
XZThe
XZ.B seteuid
XZfunction
XZ(\fBsetegid\fP)
XZsets the effective user ID (group ID) of the
XZcurrent process.
XZThe effective user ID may be set to the value
XZof the real user ID or the saved set-user-ID (see
XZintro(2)
XZand
XZexecve(2);
XZin this way, the effective user ID of a set-user-ID executable
XZmay be toggled by switching to the real user ID, then re-enabled
XZby reverting to the set-user-ID value.
XZSimilarly, the effective group ID may be set to the value
XZof the real group ID or the saved set-user-ID.
XZ.PP
XZ.SH RETURN VALUES
XZUpon success, these functions return 0;
XZotherwise \-1 is returned.
XZ.PP
XZIf the user is not the super user, or the uid
XZspecified is not the real, effective ID, or saved ID,
XZthese functions return \-1.
XZ.SH SEE ALSO
XZgetuid(2), getgid(2)
XZ.SH STANDARDS
XZThe
XZ.B setuid
XZand
XZ.B setgid
XZfunctions are compliant with the
XZIEEE Std 1003.1-1988 (``POSIX'')
XZspecification with
XZ_POSIX_SAVED_IDS
XZnot defined.
XZThe
XZ.B seteuid
XZand
XZ.B setegid
XZfunctions are extensions based on the 
XZPOSIX
XZconcept of
XZ_POSIX_SAVED_IDS ,
XZand have been proposed for a future revision of the standard.
XSHAR_EOF
Xchmod 644 '/usr/src/man/man2/setuid.2'
Xfi
Xif test -f '/usr/src/man/man3/setruid.3'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/man/man3/setruid.3'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/man/man3/setruid.3'
XZ.\" Copyright (c) 1983, 1991, 1993
XZ.\"	The Regents of the University of California.  All rights reserved.
XZ.\"
XZ.\" Redistribution and use in source and binary forms, with or without
XZ.\" modification, are permitted provided that the following conditions
XZ.\" are met:
XZ.\" 1. Redistributions of source code must retain the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer.
XZ.\" 2. Redistributions in binary form must reproduce the above copyright
XZ.\"    notice, this list of conditions and the following disclaimer in the
XZ.\"    documentation and/or other materials provided with the distribution.
XZ.\" 3. All advertising materials mentioning features or use of this software
XZ.\"    must display the following acknowledgement:
XZ.\"	This product includes software developed by the University of
XZ.\"	California, Berkeley and its contributors.
XZ.\" 4. Neither the name of the University nor the names of its contributors
XZ.\"    may be used to endorse or promote products derived from this software
XZ.\"    without specific prior written permission.
XZ.\"
XZ.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ.\" SUCH DAMAGE.
XZ.\"
XZ.\"     @(#)setruid.3	8.1.1 (2.11BSD) 1997/12/3
XZ.\"
XZ.TH SETRUID 3 "December 3, 1997"
XZ.UC 4
XZ.SH NAME
XZ\fBsetruid\fP, \fBsetrgid\fP \- set user and group ID
XZ.SH SYNOPSIS
XZ.B #include <sys/types.h>
XZ.nf
XZ\fIint\fP
XZ\fBsetruid\fP(ruid)
XZ\ \ \ \ uid_t ruid
XZ.sp
XZ\fIint\fP
XZ\fBsetrgid\fP(rgid)
XZ\ \ \ \ gid_t rgid
XZ.fi
XZ.SH DESCRIPTION
XZThe
XZ.B setruid
XZfunction
XZ(\fBsetrgid\fP)
XZsets the real user ID (group ID) of the
XZcurrent process.
XZ.SH RETURN VALUES
XZUpon success, these functions return 0;
XZotherwise \-1 is returned.
XZ.PP
XZIf the user is not the super user, or the uid
XZspecified is not the real or effective ID, these
XZfunctions return \-1.
XZ.PP
XZThe use of these calls is not portable.
XZTheir use is discouraged; they will be removed in the future.
XZ.SH SEE ALSO
XZsetuid(2), setgid(2), seteuid(2), setegid(2), getuid(2), getgid(2)
XZ.SH HISTORY
XZThe
XZ.B setruid
XZand
XZ.B setrgid
XZsyscalls appeared in 4.2BSD
XZand were dropped in
XZ4.4BSD.
XSHAR_EOF
Xchmod 644 '/usr/src/man/man3/setruid.3'
Xfi
Xif test -f '/usr/src/sys/sys/kern_prot2.c'
Xthen
X	echo shar: "will not over-write existing file '/usr/src/sys/sys/kern_prot2.c'"
Xelse
Xsed 's/^Z//' << \SHAR_EOF > '/usr/src/sys/sys/kern_prot2.c'
XZ/*
XZ * Copyright (c) 1982, 1986, 1989, 1990, 1991, 1993
XZ *	The Regents of the University of California.  All rights reserved.
XZ * (c) UNIX System Laboratories, Inc.
XZ * All or some portions of this file are derived from material licensed
XZ * to the University of California by American Telephone and Telegraph
XZ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
XZ * the permission of UNIX System Laboratories, Inc.
XZ *
XZ * Redistribution and use in source and binary forms, with or without
XZ * modification, are permitted provided that the following conditions
XZ * are met:
XZ * 1. Redistributions of source code must retain the above copyright
XZ *    notice, this list of conditions and the following disclaimer.
XZ * 2. Redistributions in binary form must reproduce the above copyright
XZ *    notice, this list of conditions and the following disclaimer in the
XZ *    documentation and/or other materials provided with the distribution.
XZ * 3. All advertising materials mentioning features or use of this software
XZ *    must display the following acknowledgement:
XZ *	This product includes software developed by the University of
XZ *	California, Berkeley and its contributors.
XZ * 4. Neither the name of the University nor the names of its contributors
XZ *    may be used to endorse or promote products derived from this software
XZ *    without specific prior written permission.
XZ *
XZ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
XZ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
XZ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
XZ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
XZ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
XZ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
XZ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
XZ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
XZ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
XZ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
XZ * SUCH DAMAGE.
XZ *
XZ *	@(#)kern_prot.c	8.9.1 (2.11BSD) 1997/11/28
XZ */
XZ
XZ#include "param.h"
XZ#include "user.h"
XZ#include "acct.h"
XZ#include "proc.h"
XZ#include "systm.h"
XZ#ifdef QUOTA
XZ#include "quota.h"
XZ#endif
XZ
XZint
XZsetuid()
XZ{
XZ	struct a {
XZ		uid_t uid;
XZ		} *uap = (struct a *)u.u_ap;
XZ
XZ	return(_setuid(uap->uid));
XZ	}
XZ
XZ/*
XZ * This is a helper function used by setuid() above and the 4.3BSD 
XZ * compatibility code.  When the latter goes away this can be joined
XZ * back into the above code and save a function call.
XZ*/
XZint
XZ_setuid(uid)
XZ	register uid_t uid;
XZ	{
XZ
XZ	if (uid != u.u_ruid && !suser())
XZ		return(u.u_error);
XZ	/*
XZ	 * Everything's okay, do it.
XZ	 * Since the real user id is changing the quota references need
XZ	 * to be updated.
XZ	 */
XZ#ifdef QUOTA
XZ        QUOTAMAP();
XZ	if (u.u_quota->q_uid != uid) {
XZ		qclean();
XZ		qstart(getquota((uid_t)uid, 0, 0));
XZ	}
XZ	QUOTAUNMAP();
XZ#endif
XZ
XZ	u.u_procp->p_uid = uid;
XZ	u.u_uid = uid;
XZ	u.u_ruid = uid;
XZ	u.u_svuid = uid;
XZ	u.u_acflag |= ASUGID;
XZ	return (u.u_error = 0);
XZ	}
XZ
XZint
XZseteuid()
XZ{
XZ	struct a {
XZ		uid_t euid;
XZ		} *uap = (struct a *)u.u_ap;
XZ
XZ	return(_seteuid(uap->euid));
XZ	}
XZ
XZint
XZ_seteuid(euid)
XZ	register uid_t euid;
XZ	{
XZ
XZ	if (euid != u.u_ruid && euid != u.u_svuid && !suser())
XZ		return (u.u_error);
XZ	/*
XZ	 * Everything's okay, do it.
XZ	 */
XZ	u.u_uid = euid;
XZ	u.u_acflag |= ASUGID;
XZ	return (u.u_error = 0);
XZ	}
XZ
XZint
XZsetgid()
XZ	{
XZ	struct a {
XZ		gid_t gid;
XZ		} *uap = (struct a *)u.u_ap;
XZ	
XZ	return(_setgid(uap->gid));
XZ	}
XZ
XZint 
XZ_setgid(gid)
XZ	register gid_t gid;
XZ	{
XZ
XZ	if (gid != u.u_rgid && !suser())
XZ		return (u.u_error);	/* XXX */
XZ	u.u_groups[0] = gid;		/* effective gid is u_groups[0] */
XZ	u.u_rgid = gid;
XZ	u.u_svgid = gid;
XZ	u.u_acflag |= ASUGID;
XZ	return (u.u_error = 0);
XZ	}
XZ
XZint
XZsetegid()
XZ	{
XZ	struct a {
XZ		gid_t egid;
XZ	} *uap = (struct a *)u.u_ap;
XZ
XZ	return(_setegid(uap->egid));
XZ	}
XZ
XZint
XZ_setegid(egid)
XZ	register gid_t egid;
XZ	{
XZ
XZ	if (egid != u.u_rgid && egid != u.u_svgid && !suser())
XZ		return (u.u_error);
XZ	u.u_groups[0] = egid;
XZ	u.u_acflag |= ASUGID;
XZ	return (u.u_error = 0);
XZ	}
XZ
XZ/* 4.3 compatibility */
XZ
XZint
XZsetreuid()
XZ{
XZ	register struct a {
XZ		int ruid;
XZ		int euid;
XZ	} *uap = (struct a *)u.u_ap;
XZ
XZ	/*
XZ	 * If ruid == euid then setreuid is being used to emulate setuid,
XZ	 * just do it.
XZ	 */
XZ	if (uap->ruid != -1 && uap->ruid == uap->euid)
XZ		return (_setuid(uap->ruid));
XZ	/*
XZ	 * Otherwise we assume that the intent of setting ruid is to be
XZ	 * able to get back ruid priviledge (i.e. swapping ruid and euid).
XZ	 * So we make sure that we will be able to do so, but do not
XZ	 * actually set the ruid.
XZ	 */
XZ	if (uap->ruid != (uid_t)-1 && uap->ruid != u.u_ruid &&
XZ	    uap->ruid != u.u_svuid)
XZ		return (u.u_error = EPERM);
XZ	if (uap->euid == (uid_t)-1)
XZ		return (u.u_error = 0);
XZ	return (_seteuid(uap->euid));
XZ}
XZ
XZ/* 4.3 compatibility */
XZ
XZint
XZsetregid()
XZ{
XZ	register struct a {
XZ		int rgid;
XZ		int egid;
XZ	} *uap = (struct a *)u.u_ap;
XZ
XZ	/*
XZ	 * If rgid == egid then setreuid is being used to emulate setgid,
XZ	 * just do it.
XZ	 */
XZ	if (uap->rgid != -1 && uap->rgid == uap->egid)
XZ		return (_setgid(uap->rgid));
XZ	/*
XZ	 * Otherwise we assume that the intent of setting rgid is to be
XZ	 * able to get back rgid priviledge (i.e. swapping rgid and egid).
XZ	 * So we make sure that we will be able to do so, but do not
XZ	 * actually set the rgid.
XZ	 */
XZ	if (uap->rgid != (gid_t)-1 && uap->rgid != u.u_rgid &&
XZ	    uap->rgid != u.u_svgid)
XZ		return (u.u_error = EPERM);
XZ	if (uap->egid == (gid_t)-1)
XZ		return (u.u_error = 0);
XZ	return (_setegid(uap->egid));
XZ}
XSHAR_EOF
Xchmod 644 '/usr/src/sys/sys/kern_prot2.c'
Xfi
Xexit 0
X#	End of shell archive
SHAR_EOF
  : || $echo 'restore of' '395.shar' 'failed'
fi
rm -fr _sh22977
exit 0