547 lines
16 KiB
Bash
547 lines
16 KiB
Bash
#!/bin/sh
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# This is a shell archive (produced by GNU sharutils 4.2.1).
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# To extract the files from this archive, save it to some FILE, remove
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# everything before the `!/bin/sh' line above, then type `sh FILE'.
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#
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# Made on 2000-05-25 14:41 CDT by <gk4@gnu.austin.ibm.com>.
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# Source directory was `/home/gk4/src/groupmem'.
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#
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# Existing files will *not* be overwritten unless `-c' is specified.
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#
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# This shar contains:
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# length mode name
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# ------ ---------- ------------------------------------------
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# 1960 -rw-r--r-- Makefile
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# 6348 -rw-r--r-- groupmems.c
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# 3372 -rw------- groupmems.8
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#
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save_IFS="${IFS}"
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IFS="${IFS}:"
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gettext_dir=FAILED
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locale_dir=FAILED
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first_param="$1"
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for dir in $PATH
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do
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if test "$gettext_dir" = FAILED && test -f $dir/gettext \
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&& ($dir/gettext --version >/dev/null 2>&1)
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then
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set `$dir/gettext --version 2>&1`
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if test "$3" = GNU
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then
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gettext_dir=$dir
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fi
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fi
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if test "$locale_dir" = FAILED && test -f $dir/shar \
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&& ($dir/shar --print-text-domain-dir >/dev/null 2>&1)
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then
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locale_dir=`$dir/shar --print-text-domain-dir`
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fi
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done
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IFS="$save_IFS"
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if test "$locale_dir" = FAILED || test "$gettext_dir" = FAILED
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then
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echo=echo
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else
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TEXTDOMAINDIR=$locale_dir
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export TEXTDOMAINDIR
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TEXTDOMAIN=sharutils
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export TEXTDOMAIN
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echo="$gettext_dir/gettext -s"
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fi
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if touch -am -t 200112312359.59 $$.touch >/dev/null 2>&1 && test ! -f 200112312359.59 -a -f $$.touch; then
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shar_touch='touch -am -t $1$2$3$4$5$6.$7 "$8"'
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elif touch -am 123123592001.59 $$.touch >/dev/null 2>&1 && test ! -f 123123592001.59 -a ! -f 123123592001.5 -a -f $$.touch; then
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shar_touch='touch -am $3$4$5$6$1$2.$7 "$8"'
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elif touch -am 1231235901 $$.touch >/dev/null 2>&1 && test ! -f 1231235901 -a -f $$.touch; then
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shar_touch='touch -am $3$4$5$6$2 "$8"'
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else
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shar_touch=:
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echo
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$echo 'WARNING: not restoring timestamps. Consider getting and'
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$echo "installing GNU \`touch', distributed in GNU File Utilities..."
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echo
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fi
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rm -f 200112312359.59 123123592001.59 123123592001.5 1231235901 $$.touch
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#
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if mkdir _sh10937; then
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$echo 'x -' 'creating lock directory'
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else
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$echo 'failed to create lock directory'
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exit 1
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fi
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# ============= Makefile ==============
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if test -f 'Makefile' && test "$first_param" != -c; then
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$echo 'x -' SKIPPING 'Makefile' '(file already exists)'
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else
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$echo 'x -' extracting 'Makefile' '(text)'
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sed 's/^X//' << 'SHAR_EOF' > 'Makefile' &&
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/*
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# Copyright 2000, International Business Machines, Inc.
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# All rights reserved.
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#
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# original author: George Kraft IV, gk4@us.ibm.com
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of International Business Machines, Inc., nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY INTERNATIONAL BUSINESS MACHINES, INC. AND
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# CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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# BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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# INTERNATIONAL BUSINESS MACHINES, INC. OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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X
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all: groupmems
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X
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groupmems: groupmems.c
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X cc -g -o groupmems groupmems.c -L. -lshadow
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X
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install: groupmems
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X -/usr/sbin/groupadd groups
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X install -o root -g groups -m 4770 groupmems /usr/bin
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X
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install.man: groupmems.8
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X install -o root -g root -m 644 groupmems.8 /usr/man/man8
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X
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SHAR_EOF
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(set 20 00 05 25 14 40 28 'Makefile'; eval "$shar_touch") &&
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chmod 0644 'Makefile' ||
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$echo 'restore of' 'Makefile' 'failed'
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if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \
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&& ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then
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md5sum -c << SHAR_EOF >/dev/null 2>&1 \
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|| $echo 'Makefile:' 'MD5 check failed'
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b46cf7ef8d59149093c011ced3f3103c Makefile
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SHAR_EOF
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else
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shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'Makefile'`"
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test 1960 -eq "$shar_count" ||
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$echo 'Makefile:' 'original size' '1960,' 'current size' "$shar_count!"
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fi
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fi
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# ============= groupmems.c ==============
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if test -f 'groupmems.c' && test "$first_param" != -c; then
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$echo 'x -' SKIPPING 'groupmems.c' '(file already exists)'
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else
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$echo 'x -' extracting 'groupmems.c' '(text)'
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sed 's/^X//' << 'SHAR_EOF' > 'groupmems.c' &&
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/*
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X * Copyright 2000, International Business Machines, Inc.
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X * All rights reserved.
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X *
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X * original author: George Kraft IV, gk4@us.ibm.com
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X *
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X * Redistribution and use in source and binary forms, with or without
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X * modification, are permitted provided that the following conditions
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X * are met:
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X *
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X * 1. Redistributions of source code must retain the above copyright
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X * notice, this list of conditions and the following disclaimer.
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X * 2. Redistributions in binary form must reproduce the above copyright
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X * notice, this list of conditions and the following disclaimer in the
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X * documentation and/or other materials provided with the distribution.
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X * 3. Neither the name of International Business Machines, Inc., nor the
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X * names of its contributors may be used to endorse or promote products
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X * derived from this software without specific prior written permission.
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X *
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X * THIS SOFTWARE IS PROVIDED BY INTERNATIONAL BUSINESS MACHINES, INC. AND
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X * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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X * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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X * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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X * INTERNATIONAL BUSINESS MACHINES, INC. OR CONTRIBUTORS BE LIABLE
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X * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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X * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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X * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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X * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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X * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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X * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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X * SUCH DAMAGE.
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X */
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/*
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**
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** Utility "groupmem" adds and deletes members from a user's group.
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**
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** Setup (as "root"):
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**
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** groupadd -r groups
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** chmod 2770 groupmems
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** chown root.groups groupmems
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** groupmems -g groups -a gk4
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**
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** Usage (as "gk4"):
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**
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** groupmems -a olive
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** groupmems -a jordan
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** groupmems -a meghan
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** groupmems -a morgan
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** groupmems -a jake
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** groupmems -l
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** groupmems -d jake
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** groupmems -l
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*/
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X
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#include <stdio.h>
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#include <pwd.h>
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#include <grp.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "defines.h"
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#include "groupio.h"
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X
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/* Exit Status Values */
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X
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#define EXIT_SUCCESS 0 /* success */
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#define EXIT_USAGE 1 /* invalid command syntax */
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#define EXIT_GROUP_FILE 2 /* group file access problems */
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#define EXIT_NOT_ROOT 3 /* not superuser */
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#define EXIT_NOT_EROOT 4 /* not effective superuser */
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#define EXIT_NOT_PRIMARY 5 /* not primary owner of group */
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#define EXIT_NOT_MEMBER 6 /* member of group does not exist */
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#define EXIT_MEMBER_EXISTS 7 /* member of group already exists */
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X
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#define TRUE 1
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#define FALSE 0
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X
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/* Globals */
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X
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extern int optind;
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extern char *optarg;
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static char *adduser = NULL;
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static char *deluser = NULL;
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static char *thisgroup = NULL;
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static int purge = FALSE;
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static int list = FALSE;
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static int exclusive = 0;
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X
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static int isroot(void) {
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X return getuid() ? FALSE : TRUE;
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}
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X
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static int isgroup(void) {
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X gid_t g = getgid();
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X struct group *grp = getgrgid(g);
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X
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X return TRUE;
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}
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X
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static char *whoami(void) {
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X struct group *grp = getgrgid(getgid());
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X struct passwd *usr = getpwuid(getuid());
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X
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X if (0 == strcmp(usr->pw_name, grp->gr_name)) {
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X return (char *)strdup(usr->pw_name);
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X } else {
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X return NULL;
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X }
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}
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X
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static void
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addtogroup(char *user, char **members) {
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X int i;
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X char **pmembers;
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X
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X for (i = 0; NULL != members[i]; i++ ) {
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X if (0 == strcmp(user, members[i])) {
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X fprintf(stderr, "Member already exists\n");
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X exit(EXIT_MEMBER_EXISTS);
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X }
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X }
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X
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X if (0 == i) {
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X pmembers = (char **)calloc(2, sizeof(char *));
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X } else {
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X pmembers = (char **)realloc(members, sizeof(char *)*(i+1));
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X }
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X
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X *members = *pmembers;
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X members[i] = user;
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X members[i+1] = NULL;
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}
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X
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static void
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rmfromgroup(char *user, char **members) {
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X int i;
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X int found = FALSE;
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X
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X i = 0;
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X while (!found && NULL != members[i]) {
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X if (0 == strcmp(user, members[i])) {
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X found = TRUE;
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X } else {
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X i++;
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X }
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X }
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X
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X while (found && NULL != members[i]) {
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X members[i] = members[++i];
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X }
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X
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X if (!found) {
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X fprintf(stderr, "Member to remove could not be found\n");
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X exit(EXIT_NOT_MEMBER);
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X }
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}
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X
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static void
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nomembers(char **members) {
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X int i;
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X
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X for (i = 0; NULL != members[i]; i++ ) {
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X members[i] = NULL;
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X }
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}
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X
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static void
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members(char **members) {
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X int i;
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X
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X for (i = 0; NULL != members[i]; i++ ) {
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X printf("%s ", members[i]);
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X
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X if (NULL == members[i+1]) {
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X printf("\n");
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X } else {
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X printf(" ");
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X }
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X }
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}
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X
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static void usage(void) {
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X fprintf(stderr, "usage: groupmems -a username | -d username | -D | -l [-g groupname]\n");
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X exit(EXIT_USAGE);
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}
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X
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main(int argc, char **argv) {
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X int arg, i;
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X char *name;
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X struct group *grp;
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X
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X while ((arg = getopt(argc, argv, "a:d:g:Dl")) != EOF) {
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X switch (arg) {
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X case 'a':
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X adduser = strdup(optarg);
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X ++exclusive;
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X break;
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X case 'd':
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X deluser = strdup(optarg);
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X ++exclusive;
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X break;
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X case 'g':
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X thisgroup = strdup(optarg);
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X break;
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X case 'D':
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X purge = TRUE;
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X ++exclusive;
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X break;
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X case 'l':
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X list = TRUE;
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X ++exclusive;
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X break;
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X default:
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X usage();
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X }
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X }
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X
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X if (exclusive > 1 || optind < argc) {
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X usage();
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X }
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X
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X if (!isroot() && NULL != thisgroup) {
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X fprintf(stderr, "Only root can add members to different groups\n");
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X exit(EXIT_NOT_ROOT);
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X } else if (isroot() && NULL != thisgroup) {
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X name = thisgroup;
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X } else if (!isgroup()) {
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X fprintf(stderr, "Group access is required\n");
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X exit(EXIT_NOT_EROOT);
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X } else if (NULL == (name = whoami())) {
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X fprintf(stderr, "Not primary owner of current group\n");
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X exit(EXIT_NOT_PRIMARY);
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X }
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X
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X if (!gr_lock()) {
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X fprintf(stderr, "Unable to lock group file\n");
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X exit(EXIT_GROUP_FILE);
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X }
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X
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X if (!gr_open(O_RDWR)) {
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X fprintf(stderr, "Unable to open group file\n");
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X exit(EXIT_GROUP_FILE);
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X }
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X
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X grp = (struct group *)gr_locate(name);
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X
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X if (NULL != adduser) {
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X addtogroup(adduser, grp->gr_mem);
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X gr_update(grp);
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X } else if (NULL != deluser) {
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X rmfromgroup(deluser, grp->gr_mem);
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X gr_update(grp);
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X } else if (purge) {
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X nomembers(grp->gr_mem);
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X gr_update(grp);
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X } else if (list) {
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X members(grp->gr_mem);
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X }
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X
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X if (!gr_close()) {
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X fprintf(stderr, "Cannot close group file\n");
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X exit(EXIT_GROUP_FILE);
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X }
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X
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X gr_unlock();
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X
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X exit(EXIT_SUCCESS);
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}
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X
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/* EOF */
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SHAR_EOF
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(set 20 00 05 25 14 36 38 'groupmems.c'; eval "$shar_touch") &&
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chmod 0644 'groupmems.c' ||
|
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$echo 'restore of' 'groupmems.c' 'failed'
|
|
if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \
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&& ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then
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md5sum -c << SHAR_EOF >/dev/null 2>&1 \
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|| $echo 'groupmems.c:' 'MD5 check failed'
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f0dd68f8d762d89d24d3ce1f4141f981 groupmems.c
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SHAR_EOF
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else
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shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'groupmems.c'`"
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test 6348 -eq "$shar_count" ||
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$echo 'groupmems.c:' 'original size' '6348,' 'current size' "$shar_count!"
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fi
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fi
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# ============= groupmems.8 ==============
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if test -f 'groupmems.8' && test "$first_param" != -c; then
|
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$echo 'x -' SKIPPING 'groupmems.8' '(file already exists)'
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else
|
|
$echo 'x -' extracting 'groupmems.8' '(text)'
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sed 's/^X//' << 'SHAR_EOF' > 'groupmems.8' &&
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X.\"
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X.\" Copyright 2000, International Business Machines, Inc.
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X.\" All rights reserved.
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X.\"
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X.\" original author: George Kraft IV, gk4@us.ibm.com
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X.\"
|
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X.\" Redistribution and use in source and binary forms, with or without
|
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X.\" modification, are permitted provided that the following conditions
|
|
X.\" are met:
|
|
X.\"
|
|
X.\" 1. Redistributions of source code must retain the above copyright
|
|
X.\" notice, this list of conditions and the following disclaimer.
|
|
X.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
X.\" notice, this list of conditions and the following disclaimer in the
|
|
X.\" documentation and/or other materials provided with the distribution.
|
|
X.\" 3. Neither the name of International Business Machines, Inc., nor the
|
|
X.\" names of its contributors may be used to endorse or promote products
|
|
X.\" derived from this software without specific prior written permission.
|
|
X.\"
|
|
X.\" THIS SOFTWARE IS PROVIDED BY INTERNATIONAL BUSINESS MACHINES, INC. AND
|
|
X.\" CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
|
|
X.\" BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
X.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
X.\" INTERNATIONAL BUSINESS MACHINES, INC. OR CONTRIBUTORS BE LIABLE
|
|
X.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
X.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
X.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
X.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
X.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
X.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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X.\" SUCH DAMAGE.
|
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X.\"
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X.\" $Id$
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X.\"
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X.TH GROUPMEMS 8
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X.SH NAME
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groupmems \- Administer members of a user's primary group
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X.SH SYNOPSIS
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X.B groupmems
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\fB-a\fI user_name \fR |
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\fB-d\fI user_name \fR |
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\fB-l\fR |
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\fB-D\fR |
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[\fB-g\fI group_name \fR]
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X.SH DESCRIPTION
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The \fBgroupmems\fR utility allows a user to administer their own
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group membership list without the requirement of superuser privileges.
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The \fBgroupmems\fR utility is for systems that configure its users to
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be in their own name sake primary group (i.e., guest / guest).
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X.P
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Only the superuser, as administrator, can use \fBgroupmems\fR to alter
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the memberships of other groups.
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X.IP "\fB-a \fIuser_name\fR"
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Add a new user to the group membership list.
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X.IP "\fB-d \fIuser_name\fR"
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Delete a user from the group membership list.
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X.IP "\fB-l\fR"
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List the group membership list.
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X.IP "\fB-D\fR"
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Delete all users from the group membership list.
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X.IP "\fB-g \fIgroup_name\fR"
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The superuser can specify which group membership list to modify.
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X.SH SETUP
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The \fBgroupmems\fR executable should be in mode \fB2770\fR as user \fBroot\fR
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and in group \fBgroups\fR. The system administrator can add users to
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group groups to allow or disallow them using the \fBgroupmems\fR utility
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to manager their own group membership list.
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X.P
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X $ groupadd -r groups
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X.br
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X $ chmod 2770 groupmems
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X.br
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X $ chown root.groups groupmems
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X.br
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X $ groupmems -g groups -a gk4
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X.SH FILES
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/etc/group
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X.br
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/etc/gshadow
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X.SH SEE ALSO
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X.BR chfn (1),
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X.BR chsh (1),
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X.BR useradd (8),
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X.BR userdel (8),
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X.BR usermod (8),
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X.BR passwd (1),
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X.BR groupadd (8),
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X.BR groupdel (8)
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X.SH AUTHOR
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George Kraft IV (gk4@us.ibm.com)
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X.\" EOF
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SHAR_EOF
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(set 20 00 05 25 14 38 23 'groupmems.8'; eval "$shar_touch") &&
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chmod 0600 'groupmems.8' ||
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$echo 'restore of' 'groupmems.8' 'failed'
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if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \
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&& ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then
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md5sum -c << SHAR_EOF >/dev/null 2>&1 \
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|| $echo 'groupmems.8:' 'MD5 check failed'
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181e6cd3a3c9d3df320197fa2cde2b4a groupmems.8
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SHAR_EOF
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else
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shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'groupmems.8'`"
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test 3372 -eq "$shar_count" ||
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$echo 'groupmems.8:' 'original size' '3372,' 'current size' "$shar_count!"
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fi
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fi
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rm -fr _sh10937
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exit 0
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