The goal here is to make it so applications can take the rights one would
normally get by calling caph_limit_stream() on a descriptor and build on
them as needed.
The tentatively planned use-case is an application that takes a socket and
hooks it up to std{err,out,in} for a fork()d child. It may be feasible to
apply limitations to such descriptors as long as it's a superset of those
normally applied to stdio.
Reviewed by: markj, oshobo (prior version; sans manpage addition)
Differential Revision: https://reviews.freebsd.org/D22993
The default package use to be FreeBSD-runtime but it should only contain
binaries and libs enough to boot to single user and repair the system, it
is also very handy to have a package that can be tranform to a small mfsroot.
So create a new package named FreeBSD-utilities and make it the default one.
Also move a few binaries and lib into this package when it make sense.
Reviewed by: bapt, gjb
Differential Revision: https://reviews.freebsd.org/D21506
The idea behind those functions is not to force consumers to remember that there
is a need to check errno on failure. We already have a caph_enter(3) function
which does the same for cap_enter(2).
MFC after: 2 weeks
The caph_enter function should made it easier to sandbox application
and not force us to remember that we need to check errno on failure.
Another function is also checking if casper is present.
Reviewed by: emaste, cem (partially)
Differential Revision: https://reviews.freebsd.org/D14557
FIODTYPE will be needed by hexdump(1) to speed up the -s flag on devices
that should be able to support fseek(3); specifically, in an attempt to
correct for the fact that most tape drives don't support seeking yet don't
indicate as such when fseeko(3) is invoked. Related: D10939
Reviewed by: cem, emaste, oshogbo
Approved by: emaste (mentor)
Differential Revision: https://reviews.freebsd.org/D10937
Add a helper routine for opening a directory that is restricted to being
used for opening relative files as stdio streams.
I think this will really help basic adaptation of multi-file programs to
Capsicum. Rather than having each program initialize a rights object and
ioctl/fcntl arrays for their root fd for relative opens, consolidate in the
logical place.
Reviewed by: oshogbo@
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8743
Squash EBADF from closed stdin, stdout, or stderr in caph_limit_stdio().
Any program used during special shell scripts may commonly be forked
from a parent process with closed standard stream. Do the common sense
thing for this common use.
Reported by: Iblis Lin <iblis AT hs.ntnu.edu.tw>
Reviewed by: oshogbo@ (earlier version)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8657
Capsicum helpers are a set of inline functions which goal is to reduce
duplicated patterns used to Capsicumize applications.
Reviewed by: cem, AllanJude, bapt, ed, emaste
Differential Revision: https://reviews.freebsd.org/D8013
This both avoids some dependencies on xinstall.host and allows
bootstrapping on older releases to work due to lack of at least 'install -l'
support.
Sponsored by: EMC / Isilon Storage Division
Since METAMODE has been added, sys.mk loads bsd.mkopt.mk which ends load loading
bsd.own.mk which then defines SHLIBDIR before all the Makefile.inc everywhere.
This makes /lib being populated again.
Reported by: many
Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.
Still need to add real targets under targets/ to build packages.
Differential Revision: D2796
Reviewed by: brooks imp
Change the nvlist_recv() function to take additional argument that
specifies flags expected on the received nvlist. Receiving a nvlist with
different set of flags than the ones we expect might lead to undefined
behaviour, which might be potentially dangerous.
Update consumers of this and related functions and update the tests.
Approved by: pjd (mentor)
Update man page for nvlist_unpack, nvlist_recv, nvlist_xfer, cap_recv_nvlist
and cap_xfer_nvlist.
Reviewed by: AllanJude
Approved by: pjd (mentor)
giving access to functionality that is not available in capability mode
sandbox. The functionality can be precisely restricted.
Start with the following services:
- system.dns - provides API compatible to:
- gethostbyname(3),
- gethostbyname2(3),
- gethostbyaddr(3),
- getaddrinfo(3),
- getnameinfo(3),
- system.grp - provides getgrent(3)-compatible API,
- system.pwd - provides getpwent(3)-compatible API,
- system.random - allows to obtain entropy from /dev/random,
- system.sysctl - provides sysctlbyname(3-compatible API.
Sponsored by: The FreeBSD Foundation
