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base-files: sysupgrade: handle errors when generating backup

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1. Return error if any step of generating tar file fails
2. Use pipefail to avoid calling "gzip" if tar failed

Fixes: e36cc53092 ("base-files: sysupgrade: use tar helper to include installed_packages.txt")
Reported-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Cc: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Cc: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2024-03-04 15:18:13 +01:00
parent 93610492b6
commit 4efbfcd996
1 changed files with 30 additions and 17 deletions
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47
package/base-files/files/sbin/sysupgrade
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@ -237,6 +237,7 @@ include /lib/upgrade
create_backup_archive() {
local conf_tar="$1"
local disabled
local err
[ "$(rootfs_type)" = "tmpfs" ] && {
echo "Cannot save config while running from ramdisk." >&2
@ -251,31 +252,43 @@ create_backup_archive() {
v "Saving config files..."
[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
sed -i -e 's,^/,,' "$CONFFILES"
set -o pipefail
{
for service in /etc/init.d/*; do
if ! $service enabled; then
local ret=0
if [ $ret -eq 0 ]; then
for service in /etc/init.d/*; do
if ! $service enabled; then
disabled="$disabled$service disable\n"
fi
done
disabled="$disabled\nexit 0"
tar_print_member "/etc/uci-defaults/10_disable_services" "$(echo -e $disabled)"
fi
done
disabled="$disabled\nexit 0"
tar_print_member "/etc/uci-defaults/10_disable_services" "$(echo -e $disabled)" || ret=1
fi
# Part of archive with installed packages info
if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
# Format: pkg-name<TAB>{rom,overlay,unknown}
# rom is used for pkgs in /rom, even if updated later
tar_print_member "$INSTALLED_PACKAGES" "$(find /usr/lib/opkg/info -name "*.control" \( \
\( -exec test -f /rom/{} \; -exec echo {} rom \; \) -o \
\( -exec test -f /overlay/upper/{} \; -exec echo {} overlay \; \) -o \
\( -exec echo {} unknown \; \) \
\) | sed -e 's,.*/,,;s/\.control /\t/')"
if [ $ret -eq 0 ]; then
if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
# Format: pkg-name<TAB>{rom,overlay,unknown}
# rom is used for pkgs in /rom, even if updated later
tar_print_member "$INSTALLED_PACKAGES" "$(find /usr/lib/opkg/info -name "*.control" \( \
\( -exec test -f /rom/{} \; -exec echo {} rom \; \) -o \
\( -exec test -f /overlay/upper/{} \; -exec echo {} overlay \; \) -o \
\( -exec echo {} unknown \; \) \
\) | sed -e 's,.*/,,;s/\.control /\t/')" || ret=1
fi
fi
# Rest of archive with config files and ending padding
tar c${TAR_V} -C / -T "$CONFFILES"
} | gzip > "${conf_tar:-/proc/self/fd/1}"
if [ $ret -eq 0 ]; then
tar c${TAR_V} -C / -T "$CONFFILES" || ret=1
fi
[ $ret -eq 0 ]
} | gzip > "${conf_tar:-/proc/self/fd/1}"
err=$?
set +o pipefail
local err=$?
if [ "$err" -ne 0 ]; then
echo "Failed to create the configuration backup."
[ -f "$conf_tar" ] && rm -f "$conf_tar"