Instead of passing flags (which describe a type of nvlist)
every send/recv we remember them in channel.
It's enough for use to extract them only during unwrap.
This simplify use of Casper.
Reviewed by: bruffer@, bcr@ (both man page)
Differential Revision: https://reviews.freebsd.org/D14196 (man page)
syslog in libc secretly reconnects to the daemon.
Another issue is that we don't have any information from openlog(3) if we
succeeded to open log or not so we don't know if we are ready
to enter cabability mode.
Because all of that we decided we need a syslog service for Caspser.
Reviewed by: bapt@
Differential Revision: https://reviews.freebsd.org/D12824
function, so check if cap_chanel_t is NULL is not enough.
Casper with a normal libc will still fail in capability mote so let's not
enter capability mode without casper support when we need to resolve DNS.
Reviewed by: cem
Differential Revision: https://reviews.freebsd.org/D12823
respected.
Please notice that libcasper is already in ObsoleteFiles so we don't add it
again.
Reported by: Herbert J. Skuhra <herbert@mailbox.org>
Reviewed by: bdrewery@
Differential Revision: https://reviews.freebsd.org/D12918
The idea behinds mocks is that we don't need to ifdef a lot of code in
tools itself but those defines are hidden in the casper library.
Right now the mocks are implemented as define/inlines functions.
There was a very long discussion how this should be implemented.
This approach has some advantages like we don't need to link to any additional
libraries. Unfortunately there are also some disadvantages for example it is
easy to get library out of sync between two versions of functions or that we
need extra define to compile program with casper support.
This isn't an ideal solution but it's good enough for now and should simplify
capsicumizing programs. This also doesn't close us any other ways to do those
mocks and this should evolve in time.
Discussed with: pjd, emaste, ed, rwatson, bapt, cem, bdrewery
Differential Revision: https://reviews.freebsd.org/D8753
Non-tests/... changes:
- Add HAS_TESTS= to Makefiles with libraries and programs to enable iteration
and propagate the appropriate environment down to *.test.mk.
tests/... changes:
- Add appropriate support Makefile.inc's to set HAS_TESTS in a minimal manner,
since tests/... is a special subdirectory tree compared to the others.
MFC after: 2 months
MFC with: r322511
Reviewed by: arch (silence), testing (silence)
Differential Revision: D12014
The reachover Kyuafiles were never added, and thus the tests were installed
as standalone tests, and not integrated into the full suite.
MFC after: 1 week
MFC with: r305626, 305629, r307863, r322447, r322448, r322449
of freefall.freebsd.org to unbreak the DNS tests
The address allocations for freefall.freebsd.org have changed in the past 4 years.
Use a more stable set of hardcoded addresses for now to make the tests succeed
reliably.
The hostname should be resolved dynamically instead of hardcoding the addresses in
the future. This is just a bandaid.
MFC after: 1 week
Some of the testcases try to manipulate sysctls that require root privileges,
e.g., "kern.sync_on_panic". Make root-privileges a hard requirement so the
tests don't raise false positives due to privilege issues when calling
sysctlbyname(3) on writable sysctls.
MFC after: 1 week
- Flushing stdout prevents the buffer from being printed twice, fixing
issues with stdout printing out the testplan, etc, twice.
- Don't print out raw source/line numbers; hide them behind comments.
MFC after: 1 week
directories to SUBDIR.${MK_TESTS} idiom
This is being done to pave the way for future work (and homogenity) in
^/projects/make-check-sandbox .
No functional change intended.
MFC after: 1 weeks
channel to a zygote process, rather than sending a function pointer or
service pointer. This avoids transfering pointers between address spaces,
which while robust in this case (due to the zygote being forked() from the
parent) is not generally a good idea, especially in the presence of
increasingly popular control-flow integrity and pointer protection
mitigation schemes. With this change, ping(8) and other sandboxed tools
using libcasper for DNS resolution now work on architectures with tagged
memory again.
Reviewed by: oshogbo
MFC after: 1 week
Sponsored by: DARPA, AFRL
bsd.own.mk (included from src.opts.mk) sets SHLIBDIR?=${LIBDIR}, so
SHLIBDIR must be set before including either one of them.
MFC with: 305626
Sponsored by: The FreeBSD Foundation
CASPER_SERVICE_STDIO - Casper will not close the first three descriptors (stdin,
stdout and stderr) this can be helpful for debugging.
CASPER_SERVICE_FD - Capser will not close all other descriptors, this can
be useful for a filesystem service.
For FreeBSD 12, I'm considering updating setgrent() to have a function
prototype that conforms to POSIX. FreeBSD seems to be the only operating
system that lets setgrent() return an integer. It's also inconsistent
with setpwent().
It looks like our libcasper depends on setgrent() returning an integer.
Get rid of that.
Reviewed by: oshogbo
Differential Revision: https://reviews.freebsd.org/D6659
- WARNS can be inherited from lib/Makefile.inc
- CFLAGS referred to a non-existent directory and this shouldn't be needed
anyhow due to the build picking up includes from WORLDTMP.
Sponsored by: EMC / Isilon Storage Division
After calling the cap_init(3) function Casper will fork from it's original
process, using pdfork(2). Forking from a process has a lot of advantages:
1. We have the same cwd as the original process.
2. The same uid, gid and groups.
3. The same MAC labels.
4. The same descriptor table.
5. The same routing table.
6. The same umask.
7. The same cpuset(1).
From now services are also in form of libraries.
We also removed libcapsicum at all and converts existing program using Casper
to new architecture.
Discussed with: pjd, jonathan, ed, drysdale@google.com, emaste
Partially reviewed by: drysdale@google.com, bdrewery
Approved by: pjd (mentor)
Differential Revision: https://reviews.freebsd.org/D4277
