dongshengyuan
797dd11524
Open unit files with chase_and_openat() rooted at the image instead of
plain openat(). Symlinks are now resolved under the image root and must
end at a regular file.
Reproducer:
ln -s /tmp/portable-host-unit \
IMAGE/usr/lib/systemd/system/PREFIX.service
portablectl inspect --cat IMAGE PREFIX.service
Before:
inspect followed the absolute symlink on the host and printed host
file contents as image unit metadata. Image inspection could leak or
trust files outside the portable image.
Follow-up: 61d0578b07
System and Service Manager
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