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kdumpctl: follow symlink when checking for modified files

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Previously only the symlink's timestamp is used for checking if file are
modified, this will not trigger a rebuild if the symlink target it
modified.

So check both symlink timestamp and symlink target timestamp, rebuild
the initramfs on both symlink changed and target changed.

Also give a proper error message if the file doesn't exist.

Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
This commit is contained in:
Kairui Song 2019-05-13 14:20:24 +08:00
parent 75d9132417
commit 30913fd667
1 changed files with 15 additions and 3 deletions
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kdumpctl
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@ -347,11 +347,23 @@ check_files_modified()
[ $? -ne 0 ] && return 2 [ $? -ne 0 ] && return 2
for file in $files; do for file in $files; do
if [ -e "$file" ]; then
time_stamp=`stat -c "%Y" $file` time_stamp=`stat -c "%Y" $file`
if [ "$time_stamp" -gt "$image_time" ]; then if [ "$time_stamp" -gt "$image_time" ]; then
modified_files="$modified_files $file" modified_files="$modified_files $file"
fi fi
if [ -L "$file" ]; then
file=$(readlink -m $file)
time_stamp=`stat -c "%Y" $file`
if [ "$time_stamp" -gt "$image_time" ]; then
modified_files="$modified_files $file"
fi
fi
else
echo "$file doesn't exist"
fi
done done
if [ -n "$modified_files" ]; then if [ -n "$modified_files" ]; then
echo "Detected change(s) in the following file(s):" echo "Detected change(s) in the following file(s):"
echo -n " "; echo "$modified_files" | sed 's/\s/\n /g' echo -n " "; echo "$modified_files" | sed 's/\s/\n /g'