[gentoo-dev] [PATCH] desktop.eclass: Avoid file collisions in make_desktop_entry()

[Ulrich Müller]

Closes: https://bugs.gentoo.org/771708
Reported-by: Sergey Torokhov <torokhov-s-a@××××××.ru>
Suggested-by: Ionen Wolkens <sudinave@×××××.com>
Signed-off-by: Ulrich Müller <ulm@g.o>
---
 eclass/desktop.eclass | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/eclass/desktop.eclass b/eclass/desktop.eclass
index 7d5c0f0f9a26..72d315448266 100644
--- a/eclass/desktop.eclass
+++ b/eclass/desktop.eclass
@@ -1,4 +1,4 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 # @ECLASS: desktop.eclass
@@ -163,7 +163,14 @@ make_desktop_entry() {
 		local desktop_name="${PN}-${slot}"
 	fi
 	local desktop="${exec%%[[:space:]]*}"
-	desktop="${T}/${desktop##*/}-${desktop_name}.desktop"
+	desktop="${desktop##*/}-${desktop_name}"
+
+	# Prevent collisions if a file with the same name already exists #771708
+	local desktop_base="${desktop}" count=0
+	while [[ -e ${ED}/usr/share/applications/${desktop}.desktop ]]; do
+		desktop="${desktop_base}-$((++count))"
+	done
+	desktop="${T}/${desktop}.desktop"
 
 	# Don't append another ";" when a valid category value is provided.
 	type=${type%;}${type:+;}
-- 
2.30.1