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authorPatrick McDermott <patrick.mcdermott@libiquity.com>2020-12-12 20:10:13 (EST)
committer Patrick McDermott <patrick.mcdermott@libiquity.com>2020-12-12 20:10:13 (EST)
commit78c90ddf1599b74b894460b700e25416626746e5 (patch)
tree7c2f78606829c6c192e4baf6e8dc6f625c37f831 /busybox.pkg
parentea53d2c9b249ceb20e3fe792bb18921b4435320c (diff)
busybox.pkg/prerm: Check for OPKG_BUSYBOX_SAVED
Diffstat (limited to 'busybox.pkg')
-rwxr-xr-xbusybox.pkg/prerm6
1 files changed, 6 insertions, 0 deletions
diff --git a/busybox.pkg/prerm b/busybox.pkg/prerm
index 25e55f6..ad8e863 100755
--- a/busybox.pkg/prerm
+++ b/busybox.pkg/prerm
@@ -1,5 +1,11 @@
#!/bin/sh
+# Ensure opkg saved a copy of busybox and its links. Otherwise, opkg could
+# remove busybox, try to use gzip, crash, and leave behind a broken system.
+if [ x"${OPKG_BUSYBOX_SAVED+set}" != x'set' ]; then
+ exit 1
+fi
+
if [ "x${1}" = 'xupgrade' ]; then
if [ -f /usr/share/busybox/init-scripts ]; then
while read -r script enabled; do