static env

Makefile

@@ -104,14 +104,13 @@ run: testenv $(TESTENV_GPIO)
 			--volume `pwd`/testenv/run:/run/kvmd:rw \
 			--volume `pwd`/testenv:/testenv:ro \
 			--volume `pwd`/kvmd:/kvmd:ro \
+			--volume `pwd`/testenv/env.py:/kvmd/env.py:ro \
 			--volume `pwd`/web:/usr/share/kvmd/web:ro \
 			--volume `pwd`/extras:/usr/share/kvmd/extras:ro \
 			--volume `pwd`/configs:/usr/share/kvmd/configs.default:ro \
 			--volume `pwd`/contrib/keymaps:/usr/share/kvmd/keymaps:ro \
 			--device $(TESTENV_VIDEO):$(TESTENV_VIDEO) \
 			--device $(TESTENV_GPIO):$(TESTENV_GPIO) \
-			--env KVMD_SYSFS_PREFIX=/fake_sysfs \
-			--env KVMD_PROCFS_PREFIX=/fake_procfs \
 			$(if $(TESTENV_RELAY),--device $(TESTENV_RELAY):$(TESTENV_RELAY),) \
 			--publish 8080:80/tcp \
 			--publish 4430:443/tcp \

kvmd/env.py

@@ -20,12 +20,7 @@
 # ========================================================================== #
 
 
-import os
-
-
 # =====
-# XXX: Don't use these variables for any purpose other than testing.
+ETC_PREFIX = ""
-# It can be removed at any time.
+SYSFS_PREFIX = ""
-
+PROCFS_PREFIX = ""
-SYSFS_PREFIX = str(os.getenv("KVMD_SYSFS_PREFIX", "")).strip()
-PROCFS_PREFIX = str(os.getenv("KVMD_PROCFS_PREFIX", "")).strip()

kvmd/fstab.py

@@ -23,6 +23,8 @@
 import re
 import dataclasses
 
+from . import env
+
 
 # =====
 class PartitionType:
@@ -43,7 +45,7 @@ class Partition:
 
 def find_partition(part_type: str) -> Partition:
     assert part_type in PartitionType.ALL
-    fstab_path = "/etc/fstab"
+    fstab_path = f"{env.ETC_PREFIX}/etc/fstab"
     with open(fstab_path) as file:
         for line in file.read().split("\n"):
             line = line.strip()

testenv/Dockerfile

@@ -107,5 +107,6 @@ RUN mkdir -p \
 COPY testenv/fakes/vcgencmd /opt/vc/bin/
 COPY testenv/fakes/sys /fake_sysfs/sys
 COPY testenv/fakes/proc /fake_procfs/proc
+COPY testenv/fakes/etc /fake_etc/etc
 
 CMD /bin/bash

testenv/env.py

@@ -0,0 +1,26 @@
+# ========================================================================== #
+#                                                                            #
+#    KVMD - The main PiKVM daemon.                                           #
+#                                                                            #
+#    Copyright (C) 2018-2022  Maxim Devaev <mdevaev@gmail.com>               #
+#                                                                            #
+#    This program is free software: you can redistribute it and/or modify    #
+#    it under the terms of the GNU General Public License as published by    #
+#    the Free Software Foundation, either version 3 of the License, or       #
+#    (at your option) any later version.                                     #
+#                                                                            #
+#    This program is distributed in the hope that it will be useful,         #
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of          #
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           #
+#    GNU General Public License for more details.                            #
+#                                                                            #
+#    You should have received a copy of the GNU General Public License       #
+#    along with this program.  If not, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+# ========================================================================== #
+
+
+# =====
+ETC_PREFIX = "/fake_etc"
+SYSFS_PREFIX = "/fake_sysfs"
+PROCFS_PREFIX = "/fake_procfs"

testenv/fakes/etc/fstab

@@ -0,0 +1,2 @@
+LABEL=PIPST /var/lib/kvmd/pst  ext4  nodev,nosuid,noexec,ro,errors=remount-ro,data=journal,X-kvmd.pst-user=kvmd-pst  0 0
+LABEL=PIMSD /var/lib/kvmd/msd  ext4  nodev,nosuid,noexec,ro,errors=remount-ro,data=journal,X-kvmd.otgmsd-user=kvmd  0 0