# This eclass does most of the work for the sys-user/ packages that
# supply system user accounts.
-# Needed for egetshell and egethome
+# Needed for egetshell and egethome.
inherit user
EXPORT_FUNCTIONS pkg_pretend src_unpack src_configure src_compile src_install src_test pkg_preinst pkg_postinst pkg_prerm
sys-user_src_test() { :; }
sys-user_getuid() {
- [[ $# -eq 1 ]] || die "usage: sys-user_getuid <username>"
-
# Output the real UID of the given user, or the empty string if the
# user does not exist on the system.
+ [[ $# -eq 1 ]] || die "usage: sys-user_getuid <username>"
echo $(id --real --user "${1}")
}
+sys-user_getname() {
+ # Output the username associated with the given UID, or the empty string
+ # if the given UID is still available.
+ [[ $# -eq 1 ]] || die "usage: sys-user_getname <uid>"
+ echo $(egetent passwd "${1}" | cut -f1 -d':')
+}
+
sys-user_create() {
# Create the user whose information is contained in the following
# variables:
}
+sys-user_modify() {
+ # Modify the existing user named $SYS_USER_NAME to match the values
+ # contained in the following variables:
+ #
+ # * SYS_USER_UID
+ # * SYS_USER_SHELL
+ # * SYS_USER_HOME
+ # * SYS_USER_GROUPS
+ #
+ usermod ${SYS_USER_UID:+--uid }"${SYS_USER_UID}" \
+ ${SYS_USER_GROUPS:+--append --groups }"${SYS_USER_GROUPS}" \
+ --shell "${SYS_USER_SHELL}" \
+ --home-dir "${SYS_USER_HOME}" \
+ "${SYS_USER_NAME}"
+}
+
sys-user_pkg_pretend() {
# Sanity checks that would otherwise run code in global scope.
#
if [[ "${SYS_USER_UID_IMPORTANT}" == "true" ]]; then
# Ok, the UID is important. Make sure nobody else has it. Or
# rather, nobody else *with a different username* has it.
- local oldname=$(egetent passwd "${SYS_USER_UID}" | cut -f1 -d':')
+ local oldname=$(sys-user_getname "${SYS_USER_UID}")
if [[ "${SYS_USER_NAME}" != "${oldname}" ]]; then
die "important UID ${SYS_USER_UID} already belongs to ${oldname}"
fi
fi
fi
+ if [[ -n "${SYS_USER_UID}" ]]; then
+ # A specific UID was requested.
+ local current_name=$(sys-user_getname "${SYS_USER_UID}")
+ if [[ "${current_name}" != "${SYS_USER_NAME}" ]]; then
+ # This UID is already taken by another user, but this
+ # specific UID was not important (we checked in
+ # pkg_pretend), so fall back to an arbitrary one.
+ SYS_USER_UID=""
+ fi
+ fi
+
# The "useradd" and "usermod" tools expect a comma-separated list,
# so change our spaces to commas. Having duplicates in the list is
# not a problem for those two tools.
fi
# The user already exists, so all we have left to do is to try
- # to append SYS_USER_GROUPS to the existing groups.
- usermod --append --groups "${SYS_USER_GROUPS}" \
+ # to append SYS_USER_GROUPS to the existing groups. The home
+ # dir, shell, and uid should all match already.
+ sys-user_modify \
|| die "failed to append groups to existing user ${SYS_USER_NAME}"
fi
}