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base-files: merge /etc/passwd et al at sysupgrade config restore 

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2020-10-22 13:13:39 +01:00
parent 2812ea3acb
commit de7ca7dafa
2 changed files with 17 additions and 1 deletions
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2
package/base-files/Makefile
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@ -12,7 +12,7 @@ include $(INCLUDE_DIR)/version.mk
include $(INCLUDE_DIR)/feeds.mk
PKG_NAME:=base-files
PKG_RELEASE:=232
PKG_RELEASE:=233
PKG_FLAGS:=nonshared
PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/

16
package/base-files/files/lib/preinit/80_mount_root
View File

@ -2,6 +2,19 @@
# Copyright (C) 2006 OpenWrt.org
# Copyright (C) 2010 Vertical Communications
missing_lines() {
local file1 file2 line
file1="$1"
file2="$2"
oIFS="$IFS"
IFS=":"
while read line; do
set -- $line
grep -q "^$1:" "$file2" || echo "$*"
done < "$file1"
IFS="$oIFS"
}
do_mount_root() {
mount_root
boot_run_hook preinit_mount_root
@ -9,6 +22,9 @@ do_mount_root() {
echo "- config restore -"
cd /
tar xzf /sysupgrade.tgz
missing_lines /rom/etc/passwd /etc/passwd >> /etc/passwd
missing_lines /rom/etc/group /etc/group >> /etc/group
missing_lines /rom/etc/shadow /etc/shadow >> /etc/shadow
# Prevent configuration corruption on a power loss
sync
}