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# This bbclass provides basic functionality for user/group settings.
# This bbclass is intended to be inherited by useradd.bbclass and
# extrausers.bbclass.
# The following functions basically have similar logic.
# *) Perform necessary checks before invoking the actual command
# *) Invoke the actual command, make retries if necessary
# *) Error out if an error occurs.
# Note that before invoking these functions, make sure the global variable
# PSEUDO is set up correctly.
perform_groupadd () {
local rootdir="$1"
local opts="$2"
local retries="$3"
bbnote "Performing groupadd with [$opts] and $retries times of retry"
local groupname=`echo "$opts" | awk '{ print $NF }'`
local group_exists="`grep "^$groupname:" $rootdir/etc/group || true`"
if test "x$group_exists" = "x"; then
local count=0
while true; do
eval $PSEUDO groupadd $opts || true
group_exists="`grep "^$groupname:" $rootdir/etc/group || true`"
if test "x$group_exists" = "x"; then
bbwarn "groupadd command did not succeed. Retrying..."
else
break
fi
count=`expr $count + 1`
if test $count = $retries; then
bbfatal "Tried running groupadd command $retries times without success, giving up"
fi
sleep $count
done
else
bbwarn "group $groupname already exists, not re-creating it"
fi
}
perform_useradd () {
local rootdir="$1"
local opts="$2"
local retries="$3"
bbnote "Performing useradd with [$opts] and $retries times of retry"
local username=`echo "$opts" | awk '{ print $NF }'`
local user_exists="`grep "^$username:" $rootdir/etc/passwd || true`"
if test "x$user_exists" = "x"; then
local count=0
while true; do
eval $PSEUDO useradd $opts || true
user_exists="`grep "^$username:" $rootdir/etc/passwd || true`"
if test "x$user_exists" = "x"; then
bbwarn "useradd command did not succeed. Retrying..."
else
break
fi
count=`expr $count + 1`
if test $count = $retries; then
bbfatal "Tried running useradd command $retries times without success, giving up"
fi
sleep $count
done
else
bbwarn "user $username already exists, not re-creating it"
fi
}
perform_groupmems () {
local rootdir="$1"
local opts="$2"
local retries="$3"
bbnote "Performing groupmems with [$opts] and $retries times of retry"
local groupname=`echo "$opts" | awk '{ for (i = 1; i < NF; i++) if ($i == "-g" || $i == "--group") print $(i+1) }'`
local username=`echo "$opts" | awk '{ for (i = 1; i < NF; i++) if ($i == "-a" || $i == "--add") print $(i+1) }'`
bbnote "Running groupmems command with group $groupname and user $username"
# groupmems fails if /etc/gshadow does not exist
local gshadow=""
if [ -f $rootdir${sysconfdir}/gshadow ]; then
gshadow="yes"
else
gshadow="no"
touch $rootdir${sysconfdir}/gshadow
fi
local mem_exists="`grep "^$groupname:[^:]*:[^:]*:\([^,]*,\)*$username\(,[^,]*\)*" $rootdir/etc/group || true`"
if test "x$mem_exists" = "x"; then
local count=0
while true; do
eval $PSEUDO groupmems $opts || true
mem_exists="`grep "^$groupname:[^:]*:[^:]*:\([^,]*,\)*$username\(,[^,]*\)*" $rootdir/etc/group || true`"
if test "x$mem_exists" = "x"; then
bbwarn "groupmems command did not succeed. Retrying..."
else
break
fi
count=`expr $count + 1`
if test $count = $retries; then
if test "x$gshadow" = "xno"; then
rm -f $rootdir${sysconfdir}/gshadow
rm -f $rootdir${sysconfdir}/gshadow-
fi
bbfatal "Tried running groupmems command $retries times without success, giving up"
fi
sleep $count
done
else
bbwarn "group $groupname already contains $username, not re-adding it"
fi
if test "x$gshadow" = "xno"; then
rm -f $rootdir${sysconfdir}/gshadow
rm -f $rootdir${sysconfdir}/gshadow-
fi
}
perform_groupdel () {
local rootdir="$1"
local opts="$2"
local retries="$3"
bbnote "Performing groupdel with [$opts] and $retries times of retry"
local groupname=`echo "$opts" | awk '{ print $NF }'`
local group_exists="`grep "^$groupname:" $rootdir/etc/group || true`"
if test "x$group_exists" != "x"; then
local count=0
while true; do
eval $PSEUDO groupdel $opts || true
group_exists="`grep "^$groupname:" $rootdir/etc/group || true`"
if test "x$group_exists" != "x"; then
bbwarn "groupdel command did not succeed. Retrying..."
else
break
fi
count=`expr $count + 1`
if test $count = $retries; then
bbfatal "Tried running groupdel command $retries times without success, giving up"
fi
sleep $count
done
else
bbwarn "group $groupname doesn't exist, not removing it"
fi
}
perform_userdel () {
local rootdir="$1"
local opts="$2"
local retries="$3"
bbnote "Performing userdel with [$opts] and $retries times of retry"
local username=`echo "$opts" | awk '{ print $NF }'`
local user_exists="`grep "^$username:" $rootdir/etc/passwd || true`"
if test "x$user_exists" != "x"; then
local count=0
while true; do
eval $PSEUDO userdel $opts || true
user_exists="`grep "^$username:" $rootdir/etc/passwd || true`"
if test "x$user_exists" != "x"; then
bbwarn "userdel command did not succeed. Retrying..."
else
break
fi
count=`expr $count + 1`
if test $count = $retries; then
bbfatal "Tried running userdel command $retries times without success, giving up"
fi
sleep $count
done
else
bbwarn "user $username doesn't exist, not removing it"
fi
}
perform_groupmod () {
# Other than the return value of groupmod, there's no simple way to judge whether the command
# succeeds, so we disable -e option temporarily
set +e
local rootdir="$1"
local opts="$2"
local retries="$3"
bbnote "Performing groupmod with [$opts] and $retries times of retry"
local groupname=`echo "$opts" | awk '{ print $NF }'`
local group_exists="`grep "^$groupname:" $rootdir/etc/group || true`"
if test "x$group_exists" != "x"; then
local count=0
while true; do
eval $PSEUDO groupmod $opts
if test $? != 0; then
bbwarn "groupmod command did not succeed. Retrying..."
else
break
fi
count=`expr $count + 1`
if test $count = $retries; then
bbfatal "Tried running groupmod command $retries times without success, giving up"
fi
sleep $count
done
else
bbwarn "group $groupname doesn't exist, unable to modify it"
fi
set -e
}
perform_usermod () {
# Same reason with groupmod, temporarily disable -e option
set +e
local rootdir="$1"
local opts="$2"
local retries="$3"
bbnote "Performing usermod with [$opts] and $retries times of retry"
local username=`echo "$opts" | awk '{ print $NF }'`
local user_exists="`grep "^$username:" $rootdir/etc/passwd || true`"
if test "x$user_exists" != "x"; then
local count=0
while true; do
eval $PSEUDO usermod $opts
if test $? != 0; then
bbwarn "usermod command did not succeed. Retrying..."
else
break
fi
count=`expr $count + 1`
if test $count = $retries; then
bbfatal "Tried running usermod command $retries times without success, giving up"
fi
sleep $count
done
else
bbwarn "user $username doesn't exist, unable to modify it"
fi
set -e
}
|
