# 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 }