https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234510
Bug ID: 234510
Summary: cap_service_open fails to provide services
Product: Base System
Version: 12.0-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: [email protected]
Reporter: [email protected]
Attachment #200632 text/plain
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Created attachment 200632
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Reproduction of Casper Failure
I am investigating capsicum / casper based on the documentation here.
https://www.freebsd.org/cgi/man.cgi?query=libcasper&sektion=3&apropos=0&manpath=FreeBSD+11.0-RELEASE+and+Ports
The process enters capability mode without a problem but when services are
requested through casper it fails.
I have attached the sample code that can reproduce this with the following
steps:
% clang sample.c -o sample -g -DWITH_CASPER -lcasper
% ./sample
Unable to open system.dns service
I have tried debugging it and it seems as though the nvlist_get_number() call
is failing
https://github.com/FreeBSDDesktop/freebsd-base/blob/master/lib/libcasper/libcasper/libcasper.c#L327
nvlist_get_number is returning 2 instead of 0 though why it's doing this is
unclear to me as I am very unfamiliar with nv.
I also ran the same sample app on my RaspPi with the same results.
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