• Simon McVittie's avatar
    capture-libs: Add if-not-in-container flag · 45fb6f29
    Simon McVittie authored
    
    
    When pressure-vessel maps LD_PRELOAD options into a container, it's not
    completely obvious what to do with a plain basename. If it's
    LD_PRELOAD=libMangoHud.so, then we'll want to import that library into
    the container and load it. However, if it's something like
    LD_PRELOAD=libcurl.so.4, then arbitrarily deciding that we will load
    the one from the host system seems like it defeats the object of the
    predictable runtime environment.
    
    We can avoid this by assuming that if a particular SONAME exists in the
    container, then we should probably interpret LD_PRELOADing it as meaning
    use the container's version, even if the version from the provider
    (host system) appears newer. The if-not-in-container flag makes this
    implementable.
    
    If the library has dependencies, they are compared between container
    and provider as usual.
    Signed-off-by: Simon McVittie's avatarSimon McVittie <smcv@collabora.com>
    45fb6f29
capture-libs.c 45.2 KB