tree f2247050ff5efef914d2f979a839adb1b783d122
parent dabc4301f7432c852eec7b5ce0e1ab1af7c4016f
author Luis Hector Chavez <lhchavez@google.com> 1537805606 -0700
committer Luis Hector Chavez <lhchavez@google.com> 1537816080 -0700

minijail: Handle cap_get_flag(3) failing with EINVAL

This change adds handling EINVAL on cap_get_flag(3). This is because
libcap rejects setting / getting any capabilities that it wasn't
compiled with, despite there being some wording on libcap(3)'s
cap_from_text(3) manpage that would lead the readers to think that
the library would allow doing so.

Bug: None
Test: # ./minijail0 -T static --ambient \
        -c 'cap_dac_read_search,cap_dac_override+e' -- \
        /bin/true  # On Chrome OS.
Change-Id: Iea9b6737b208a201868731d44724eb1caa165fc5