fix handling of consecutive optional arguments
The C library strtok function will skip blank tokens. e.g. "a;;b"
will yield ["a", "b"], not ["a", "", "b"]. This affects some of our
command line options (like -k and -b), so switch them to our own
tokenize function which will yield empty strings as needed.
This also lets us make sure the user doesn't pass too many arguments.
Currently we were accepting (and ignoring the extra parts of) options
like -b /var,/var,1,foo,bar,fat,cat. This would be treated like we
passed in -b /var,/var,1.
Bug: None
Test: `minijail0 --profile minimalistic-mountns -b /dev/log,,1 /bin/ls /dev/log` works
Change-Id: I653deb59ac8e6b1df108e1062a87dd87e7cb8a17
2 files changed