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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 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
}
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