# 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 with flock # *) 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="$2" bbnote "${PN}: Performing groupadd with [$opts]" local groupname=`echo "$opts" | awk '{ print $NF }'` local group_exists="`grep "^$groupname:" $rootdir/etc/group || true`" if test "x$group_exists" = "x"; then eval flock -x $rootdir${sysconfdir} -c \"$PSEUDO groupadd \$opts\" || true group_exists="`grep "^$groupname:" $rootdir/etc/group || true`" if test "x$group_exists" = "x"; then bbfatal "${PN}: groupadd command did not succeed." fi else bbnote "${PN}: group $groupname already exists, not re-creating it" fi } perform_useradd () { local rootdir="$1" local opts="$2" bbnote "${PN}: Performing useradd with [$opts]" local username=`echo "$opts" | awk '{ print $NF }'` local user_exists="`grep "^$username:" $rootdir/etc/passwd || true`" if test "x$user_exists" = "x"; then eval flock -x $rootdir${sysconfdir} -c \"$PSEUDO useradd \$opts\" || true user_exists="`grep "^$username:" $rootdir/etc/passwd || true`" if test "x$user_exists" = "x"; then bbfatal "${PN}: useradd command did not succeed." fi else bbnote "${PN}: user $username already exists, not re-creating it" fi } perform_groupmems () { local rootdir="$1" local opts="$2" bbnote "${PN}: Performing groupmems with [$opts]" local groupname=`echo "$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 $(i+1) }'` bbnote "${PN}: Running groupmems command with group $groupname and user $username" local mem_exists="`grep "^$groupname:[^:]*:[^:]*:\([^,]*,\)*$username\(,[^,]*\)*" $rootdir/etc/group || true`" if test "x$mem_exists" = "x"; then eval flock -x $rootdir${sysconfdir} -c \"$PSEUDO groupmems \$opts\" || true mem_exists="`grep "^$groupname:[^:]*:[^:]*:\([^,]*,\)*$username\(,[^,]*\)*" $rootdir/etc/group || true`" if test "x$mem_exists" = "x"; then bbfatal "${PN}: groupmems command did not succeed." fi else bbnote "${PN}: group $groupname already contains $username, not re-adding it" fi } perform_groupdel () { local rootdir="$1" local opts="$2" bbnote "${PN}: Performing groupdel with [$opts]" local groupname=`echo "$opts" | awk '{ print $NF }'` local group_exists="`grep "^$groupname:" $rootdir/etc/group || true`" if test "x$group_exists" != "x"; then local awk_input='BEGIN {FS=":"}; $1=="'$groupname'" { print $3 }' local groupid=`echo "$awk_input" | awk -f- $rootdir/etc/group` local awk_check_users='BEGIN {FS=":"}; $4=="'$groupid'" {print $1}' local other_users=`echo "$awk_check_users" | awk -f- $rootdir/etc/passwd` if test "x$other_users" = "x"; then eval flock -x $rootdir${sysconfdir} -c \"$PSEUDO groupdel \$opts\" || true group_exists="`grep "^$groupname:" $rootdir/etc/group || true`" if test "x$group_exists" != "x"; then bbfatal "${PN}: groupdel command did not succeed." fi else bbnote "${PN}: '$groupname' is primary group for users '$other_users', not removing it" fi else bbnote "${PN}: group $groupname doesn't exist, not removing it" fi } perform_userdel () { local rootdir="$1" local opts="$2" bbnote "${PN}: Performing userdel with [$opts]" local username=`echo "$opts" | awk '{ print $NF }'` local user_exists="`grep "^$username:" $rootdir/etc/passwd || true`" if test "x$user_exists" != "x"; then eval flock -x $rootdir${sysconfdir} -c \"$PSEUDO userdel \$opts\" || true user_exists="`grep "^$username:" $rootdir/etc/passwd || true`" if test "x$user_exists" != "x"; then bbfatal "${PN}: userdel command did not succeed." fi else bbnote "${PN}: 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="$2" bbnote "${PN}: Performing groupmod with [$opts]" local groupname=`echo "$opts" | awk '{ print $NF }'` local group_exists="`grep "^$groupname:" $rootdir/etc/group || true`" if test "x$group_exists" != "x"; then eval flock -x $rootdir${sysconfdir} -c \"$PSEUDO groupmod \$opts\" if test $? != 0; then bbwarn "${PN}: groupmod command did not succeed." fi else bbwarn "${PN}: 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="$2" bbnote "${PN}: Performing usermod with [$opts]" local username=`echo "$opts" | awk '{ print $NF }'` local user_exists="`grep "^$username:" $rootdir/etc/passwd || true`" if test "x$user_exists" != "x"; then eval flock -x $rootdir${sysconfdir} -c \"$PSEUDO usermod \$opts\" if test $? != 0; then bbfatal "${PN}: usermod command did not succeed." fi else bbwarn "${PN}: user $username doesn't exist, unable to modify it" fi set -e }