[gentoo-dev] [PATCH] user-info.eclass: return immediately if db does not exist

[Bertrand Jacquin]

Using portage to bootstrap gentoo install can lead to the following
warning when ROOT is empty:

  >> Running pre-merge checks for acct-group/root-0
  grep: /tmp/0xff.z2MjAjJXuo/root/etc/group: No such file or directory
  grep: /tmp/0xff.z2MjAjJXuo/root/etc/group: No such file or directory

This change prevent egetent() from attempting to lookup key if database
does not exit, removing error from output.

Signed-off-by: Bertrand Jacquin <bertrand@×××××××.bzh>
---
 eclass/user-info.eclass | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/eclass/user-info.eclass b/eclass/user-info.eclass
index b18f280c1022..79d33d6881ae 100644
--- a/eclass/user-info.eclass
+++ b/eclass/user-info.eclass
@@ -1,4 +1,4 @@
-# Copyright 1999-2022 Gentoo Authors
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 # @ECLASS: user-info.eclass
@@ -34,6 +34,9 @@ egetent() {
 	*) die "sorry, database '${db}' not yet supported; file a bug" ;;
 	esac
 
+	# return immediately if db does not exist
+	[[ ! -e "${EROOT}/etc/${db}" ]] && return 1
+
 	case ${CHOST} in
 	*-freebsd*|*-dragonfly*)
 		case ${db} in