Ntpd needs only a subset of full root privileges to do its job. Specifically
it needs the ability to manipulate system time, and to re-bind to a
privileged UDP port after interface changes. The mac_ntpd(4) policy module
(see r336525) can grant these privs.
These changes detect the availability of mac_ntpd(4). If enabled, and if the
ntpd configuration is fairly vanilla, it automatically runs ntpd as the
non-root user 'ntpd' (uid 123). "Vanilla" means the config doesn't include
command line or ntp.conf options changing the location of files or using any
files/dirs likely to be inaccessible to user ntpd. Ntpd can still run as
non-root when using such options, but the admin must ensure all required
files and dirs are accessible, and then set ntpd_user=ntpd in rc.conf.
Note that these changes also address PR 199127 by using the command_args
technique suggested in the patch. They also tangentially address PR 113552,
which is primarily about inconsistent filenames in documentation, but some
of the inconsistancy was caused by old code in rc.d/ntpd which is leftover
from the intial import from netbsd. There was code to do chroot setup which
required the use of the netbsd clockctl(4) device; that code never had any
effect on freebsd, because we lack that device and don't build ntpd with the
options that would allow using it.
PR: 113552 199127
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D16050
Code analysis and runtime analysis using truss(8) indicate that the only
privileged operations performed by ntpd are adjusting system time, and
(re-)binding to privileged UDP port 123. These changes add a new mac(4)
policy module, mac_ntpd(4), which grants just those privileges to any
process running with uid 123.
This also adds a new user and group, ntpd:ntpd, (uid:gid 123:123), and makes
them the owner of the /var/db/ntp directory, so that it can be used as a
location where the non-privileged daemon can write files such as the
driftfile, and any optional logfile or stats files.
Because there are so many ways to configure ntpd, the question of how to
configure it to run without root privs can be a bit complex, so that will be
addressed in a separate commit. These changes are just what's required to
grant the limited subset of privs to ntpd, and the small change to ntpd to
prevent it from exiting with an error if running as non-root.
Differential Revision: https://reviews.freebsd.org/D16281
Add src.conf knob to disable the installation of /var/db/services.db
Default to leaving services.db in place, but allow the removal of the
file and its creation with a src.conf knob.
This file ends up being 2MB in size. For small systems this is a waste
of space but its a tradeoff.
Reviewed by: bdrewery
Differential Revision: https://reviews.freebsd.org/D9655
By using INSTALL_LINK instead of calling ln during install the files
end up in the METALOG file as well if we use -DNO_ROOT and will be
included in a disk image when using makefs with METALOG as the input.
The other file that was not included in METALOG was /var/db/services.db
which is now also included for -DNO_ROOT.
Approved By: brooks (mentor)
Differential Revision: https://reviews.freebsd.org/D15665
The expiration date is actually more of a version number than the version
date, because expiration changes twice a year, whereas the version only
changes when actual leap second events occur (except in USNO leapfiles,
which inappropriately bump the version with every expiration date change).
it from variables with similar names which are set in rc.conf. This will
make more sense as the script grows more similar-name local variables in
some upcoming changes.
The NOMATCH event was previously quoted to protect it from shell
expansion. However, that quoting now interferes with the quoting devd
is doing. Quote to protect just the ?.
Allow attaching of multiple geli providers at once if they use same
passphrase and keyfiles.
This is helpful when the providers being attached are not used for boot,
and therefore the existing code to first try the cached password when
tasting the providers during boot does not apply.
Multiple providers with the same passphrase and keyfiles can be attached
at the same time during system start-up by adding the following to
rc.conf:
geli_groups="storage backup"
geli_storage_flags="-k /etc/geli/storage.keys"
geli_storage_devices="ada0 ada1"
geli_backup_flags="-j /etc/geli/backup.passfile -k /etc/geli/backup.keys"
geli_backup_devices="ada2 ada3"
Reviewed by: wblock, delphij, jilles
Approved by: sobomax (src), bcr (doc)
Differential Revision: https://reviews.freebsd.org/D12644
Rather then combining hardlink creation for the geom(8) binary with
shared library build, move libraries to src/lib/geom so they are
built and installed normally. Create a common Makefile.classes
which is included by both lib/geom/Makefile and sbin/geom/Makefile
so the symlink and libraries stay in sync.
The relocation of libraries allows libraries to be build for 32-bit
compat. This also reduces the number of non-standard builds in
the system.
This commit is not sufficent to run a 32-bit /sbin/geom on a 64-bit
system out of the box as it will look in the wrong place for libraries
unless GEOM_LIBRARY_PATH is set appropriatly in the environment.
Reviewed by: bdrewery
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D15360
It is no longer necessary to specify a -4/-6 flag on any ntp.conf
keyword. The address type is inferred from the address itself as
necessary. "restrict default" statements always apply to both address
families regardless of any -4/-6 flag that may be present.
So this change just tidies up our default config by removing the redundant
restrict -6 statement and comment, and by removing the -6 flag from the
restrict keyword that allows access from localhost.
This change was inspired by the patches provided in PRs 201803 and 210245,
and included some contrib/ntp code inspection to verify that the -4/-6
keywords are basically no-ops in all contexts now.
PR: 201803 210245
Differential Revision: https://reviews.freebsd.org/D15974
The final 'mv' to install a fetched leap-list file can fail (due to a
readonly fs, or schg flags, for example), and that leads to mv(1)
prompting the user, stopping the boot process. Instead, use mv -f
to supress the prompting, and if verbose mode is on, emit a warning
that the existing file cannot be replaced.
PR: 219255
For a pNFS MDS server, there must be mounts done to the DSs before the
nfsd is started. Adding the REQUIRE line makes sure these are done.
If there are NFS mounts in /etc/fstab that cannot be completed before
the nfsd starts, the "bg" mount option can still be used to handle that.
I do not believe this should cause problems for non-pNFS NFS servers.
(I have requested a review by rc@, but it is still pending.)
- devmatch_enable in rc.conf(5) was not gating the start of devmatch
- Use quietstart in devd/devmatch to suppress dozens of 'Cannot start'
messages and other spurious messages from rc.subr(8) that aren't
necessarily helpful.
Discussed with: imp
devd predates service in the system. Modernize usage to use service to
start/stop things in reaction to events rather than calling the rc
file directly.
This was pointed out in my talk at BSDcan as well as indirectly
referrred to as a barrier to entry for OpenRC in that working group.
If the ipfw module is not loaded the net.inet.ip.fw.enable OID does not exist,
which leads the script to report errors and incorrectly report that ipfw is
enabled.
In the pf rc.d script the output of `/etc/rc.d/pf status` or `/etc/rc.d/pf
onestatus` always provided an exit status of zero. This made it fiddly to
programmatically determine if pf was running or not.
Return a non-zero status if the pf module is not loaded, extend pfctl to have
an option to return an error status if pf is not enabled.
PR: 228632
Submitted by: James Park-Watt <jimmypw AT gmail.com>
MFC after: 1 week
This change includes the framework for testing the auditability of various
syscalls, and includes changes for the first 12. The tests will start
auditd(8) if needed, though they'll be much faster if it's already running.
The syscalls tested in this commit include mkdir(2), mkdirat(2), mknod(2),
mknodat(2), mkfifo(2), mkfifoat(2), link(2), linkat(2), symlink(2),
symlinkat(2), rename(2), and renameat(2).
Submitted by: aniketp
MFC after: 2 weeks
Sponsored by: Google, Inc (GSoC 2018)
Differential Revision: https://reviews.freebsd.org/D15286
The lmc(4) driver was removed in r333144 and relevant files added to
ObsoleteFiles.inc, however, include/sys/dev/lmc was not removed from mtree
and is recreated on every install. Remove it from mtree.
Reviewed by: imp, emaste
Approved by: emaste
Differential Revision: https://reviews.freebsd.org/D15590
switch the default kldxref_enable to YES.
The reason is that it's required for every image that's being cross-built,
as kldxref(8) cannot handle files for non-native architectures. For the
one that is not - amd64 - having it on by default doesn't change anything;
the script is noop if the linker.hints already exists.
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
The current support for setting environment via foo_env="" in rc.conf is
not scalable and does not handle envs with spaces in the value. It seems
a common pattern for some newer software is to skip configuration files
altogether and rely on the env. This is well supported in systemd unit
files and may be the inspiration for this trend.
MFH: 1 week
Differential Revision: https://reviews.freebsd.org/D14453
contain any kernel modules. This makes the common case completely silent,
as it should be.
Reviewed by: imp@
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D14694
This is a component of a system which lets the kernel dump core to
a remote host after a panic, rather than to a local storage device.
The server component is available in the ports tree. netdump is
particularly useful on diskless systems.
The netdump(4) man page contains some details describing the protocol.
Support for configuring netdump will be added to dumpon(8) in a future
commit. To use netdump, the kernel must have been compiled with the
NETDUMP option.
The initial revision of netdump was written by Darrell Anderson and
was integrated into Sandvine's OS, from which this version was derived.
Reviewed by: bdrewery, cem (earlier versions), julian, sbruno
MFC after: 1 month
X-MFC note: use a spare field in struct ifnet
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D15253
Remove line about allowed flags. It was missing 'pRTY' and is duplicative
of the man page. It didn't describe the flags in any detail to help
remind users of how to configure newsylog.
User-visible changes:
"-u" is added to to list of command line options supported by bthidd.
Use it to enable evdev support. uinput and evdev modules should be
kld-loaded or compiled into the kernel in that case.
bthidd_evdev_support rc.conf variable is added to control enabling of
evdev support in bthidd startup script. Possible values are: "YES", "NO",
"AUTO"(default). Setting bthidd_evdev_support to "AUTO" inserts "-u" option
if kernel is compiled with EVDEV_SUPPORT option enabled.
Support for consumer HID usage page keyboard events is implemented. Most of
them are available only through evdev protocol.
kern.evdev.rcpt_mask sysctl is checked, so "sysctl kern.evdev.rcpt_mask=12"
should be executed if EVDEV_SUPPORT is compiled into kernel.
It is recommended to regenerate bthidd.conf entries with bthidcontrol(8)
"Query" command to set user-friendly names of bluetooth devices.
Reviewed by: emax, gonzo, wblock (docs), bcr (docs, early version)
Differential Revision: https://reviews.freebsd.org/D13456
r288291 added a call to limits(1), which isn't available before partitions
are mounted. This broke the ddb rc script, which does not provide its own
start_cmd.
Alleviate the situation here by providing a start_cmd. We still have other
problems with diskless setups that need to be considered, but this is a
start.
PR: 206291
Submitted by: cy
Discussed with: rgrimes
MFC after: 3 days
fget_cap() tries to do a cheaper snapshot of a file descriptor without
holding the file descriptor lock. This snapshot does not do a deep
copy of the ioctls capability array, but instead uses a different
return value to inform the caller to retry the copy with the lock
held. However, filecaps_copy() was returning 1 to indicate that a
retry was required, and fget_cap() was checking for 0 (actually
'!filecaps_copy()'). As a result, fget_cap() did not do a deep copy
of the ioctls array and just reused the original pointer. This cause
multiple file descriptor entries to think they owned the same pointer
and eventually resulted in duplicate frees.
The only code path that I'm aware of that triggers this is to create a
listen socket that has a restricted list of ioctls and then call
accept() which calls fget_cap() with a valid filecaps structure from
getsock_cap().
To fix, change the return value of filecaps_copy() to return true if
it succeeds in copying the caps and false if it fails because the lock
is required. I find this more intuitive than fixing the caller in
this case. While here, change the return type from 'int' to 'bool'.
Finally, make filecaps_copy() more robust in the failure case by not
copying any of the source filecaps structure over. This avoids the
possibility of leaking a pointer into a structure if a similar future
caller doesn't properly handle the return value from filecaps_copy()
at the expense of one more branch.
I also added a test case that panics before this change and now passes.
Reviewed by: kib
Discussed with: mjg (not a fan of the extra branch)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D15047
OpenCSD is an ARM CoreSight(tm) trace packets decoder.
- Connect libopencsd to the arm64 build.
- Install opencsd headers to /usr/include/opencsd/
Sponsored by: DARPA, AFRL
summits at BSDCan and BSDCam in 2017.
The TCP Blackbox Recorder allows you to capture events on a TCP connection
in a ring buffer. It stores metadata with the event. It optionally stores
the TCP header associated with an event (if the event is associated with a
packet) and also optionally stores information on the sockets.
It supports setting a log ID on a TCP connection and using this to correlate
multiple connections that share a common log ID.
You can log connections in different modes. If you are doing a coordinated
test with a particular connection, you may tell the system to put it in
mode 4 (continuous dump). Or, if you just want to monitor for errors, you
can put it in mode 1 (ring buffer) and dump all the ring buffers associated
with the connection ID when we receive an error signal for that connection
ID. You can set a default mode that will be applied to a particular ratio
of incoming connections. You can also manually set a mode using a socket
option.
This commit includes only basic probes. rrs@ has added quite an abundance
of probes in his TCP development work. He plans to commit those soon.
There are user-space programs which we plan to commit as ports. These read
the data from the log device and output pcapng files, and then let you
analyze the data (and metadata) in the pcapng files.
Reviewed by: gnn (previous version)
Obtained from: Netflix, Inc.
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D11085
The former is fairly vague; these are FDT overlays to be applied to the
running system, so /boot/dtb is a sensible location to put it without
cluttering up /boot/dtb even further if desired.
r328013 introduced a new error code from fsck_ffs that indicates that
it could not completely fix the file system; this happens when it
prints the message PLEASE RERUN FSCK. However, this status can happen
when fsck is run in "preen" mode and the rc.d/fsck script does not
handle that error code. Modify rc.d/fsck so that if "fsck -p"
("preen") returns the new status code (16) it will run "fsck -y", as
it currently does for a status code of 8 (the "standard error exit").
Reported by: markj
Reviewed by: mckusick, markj, ian, rgrimes
MFC after: 3 days
Sponsored by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D14679
ConnectX-4/5 devices in mlx5core.
The dump is obtained by reading a predefined register map from the
non-destructive crspace, accessible by the vendor-specific PCIe
capability (VSC). The dump is stored in preallocated kernel memory and
managed by the mlx5tool(8), which communicates with the driver using a
character device node.
The utility allows to store the dump in format
<address> <value>
into a file, to reset the dump content, and to manually initiate the
dump.
A call to mlx5_fwdump() should be added at the places where a dump
must be fetched automatically. The most likely place is right before a
firmware reset request.
Submitted by: kib@
MFC after: 1 week
Sponsored by: Mellanox Technologies
(Due to some misconfiguration) I ended up with _mask set to
"-v<something>", and /etc/rc.d/jail then failed with
"expr: illegal option -- v".
Use "expr --" so that variable content is never interpreted as an
option.
Reviewed by: jamie
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D14535
When checking the validity of the pf.conf file also include the user supplied
pf_flags. These flags might overrule macros or specify anchors, which we will
apply when actually applying the pf.conf file, so we must also take them into
account when verifying the validity.
Submitted by: Andreas Longwitz <longwitz at incore.de>
MFC after: 3 weeks
pfctl only takes the last '-F' argument into account, so this never did what
was intended.
Moreover, there is no reason to flush rules before reloading, because pf keeps
track of the rule which created a given state. That means that existing
connections will keep being processed according to the rule which originally
created them. Simply reloading the (new) rules suffices. The new rules will
apply to new connections.
PR: 127814
Submitted by: Andreas Longwitz <longwitz at incore.de>
MFC after: 3 weeks
It was originally written by Sun as part of the STF (Solaris test framework).
They open sourced it in OpenSolaris, then HighCloud partially ported it to
FreeBSD, and Spectra Logic finished the port. We also added many testcases,
fixed many broken ones, and converted them all to the ATF framework. We've had
help along the way from avg, araujo, smh, and brd.
By default most of the tests are disabled. Set the disks Kyua variable to
enable them.
Submitted by: asomers, will, justing, ken, brd, avg, araujo, smh
Sponsored by: Spectra Logic Corp, HighCloud
after r190575 there is an option to call rc.firewall with the firewall_type
passed in as an argument.
Submitted by: David P. Discher <dpd@dpdtech.com>
MFC after: 3 weeks.
Sponsored by: iXsystems Inc.
Differential Revision: https://reviews.freebsd.org/D14286
appearing as a single argument passed to devmatch(8).
Don't depend on "sort" utility from usr/bin which might not be
available when devd is started.
Sponsored by: Mellanox Technologies
In devd/devmatch.conf, we need to pass the event to the devmatch
serivce. It gets passed to devmatch -p for matching. We always pass
this, unlike hps' original patch, so we kill two birds with one stone
and only match modules to the event passed in.
Submitted by: hps@
Sponsored by: Netflix
to parse rather than searching for all events. Pass with new -p arg to
devmatch. devmatch will use that one event rather than walking the
entire tree.
kldload will stop at the first failure. So we need to loop. Also,
symbolic links may confused kldload into trying (and failing) to load
multiple modules at once, so guard against that.
Noticed by: hps (with similar patch)
Sponsored by: Netflix
Turn devmatch on by default. However, use 'start' instead of
'onestart' in the devmatch.conf file so the setting of
'devmatch_enable' is honored. Give an example of what to put in
devd.conf if you want to disable just the run-time part of devmatch.
Relnotes: yes
If any process creates a directory named "-P" in /var/run or
/var/spool/lock it will cause the purgedir function to start to rm -r /.
Simplify a lot of complicated shell logic by leveraging find(1).
Reviewed by: allanjude
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D13778
The firstboot logic has an error which causes the filesystem to be
mounted readonly even though root_rw_mount=YES. This fixes the error to
ensure that the root filesystem is mounted rw as expected after the run
of the firstboot scripts.
Reviewed by: imp
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D14226
Usage is ${name}_limits, and the argument is any flags accepted by
limits(1), such as `-n 100' (e.g. only allow 100 open files).
Approved by: cy
Differential Revision: https://reviews.freebsd.org/D14015
/boot/overlays was recently added without belonging to a package. It's only
used by bootloaders at the moment, so add it to the 'runtime' package to get
added with ubldr and friends.
Fix distrib-dirs METALOG generation while we're here. History elsewhere
seems to indicate that bapt@ fixed this to pull in all attributes from
mtrees while generating the METALOG. This fix got clobbered somewhere later,
so restore it.
Reviewed by: bapt, gjb
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D13996
libregex is a regex(3) implementation intended to feature GNU extensions and
any other non-POSIX compliant extensions that are deemed worthy.
These extensions are separated out into a separate library for the sake of
not cluttering up libc further with them as well as not deteriorating the
speed (or lack thereof) of the libc implementation.
libregex is implemented as a build of the libc implementation with LIBREGEX
defined to distinguish this from a libc build. The reasons for
implementation like this are two-fold:
1.) Maintenance- This reduces the overhead induced by adding yet another
regex implementation to base.
2.) Ease of use- Flipping on GNU extensions will be as simple as linking
against libregex, and POSIX-compliant compilations can be guaranteed with a
REG_POSIX cflag that should be ignored by libc/regex and disables extensions
in libregex. It is also easier to keep REG_POSIX sane and POSIX pure when
implemented in this fashion.
Tests are added for future functionality, but left disconnected for the time
being while other testing is done.
Reviewed by: cem (previous version)
Differential Revision: https://reviews.freebsd.org/D12934
This matches directory structure used commonly in Linux-land, and it's
cleaner than mixing overlays into the existing module paths. Overlays are
still mixed in by specifying fdt_overlays in loader.conf(5).
Reviewed by: manu
Differential Revision: https://reviews.freebsd.org/D13922
The NetBSD tests for vmstat are basically just a smoke test, ensuring that
executing `vmstat` and `vmstat -s` exit successfully. This is more than we
test now, so go with it.
The NetBSD test suite has 24 tests for awk, and we pass exactly 4 of them.
Add the necessary pieces for interested parties to easily connect the
tests and run them, but leave them disconnected for the time being.
Some of these tests outright segfault in our awk, others just exhibit the
wrong behavior.
leapseconds last-update field and incorrectly increment it when changing
the file even though the leapsecond data has not changed. For instance,
if a leapsecond file is obtained from USNO, when it expires it will not
be replaced by a newer file from other sources because it has an
incorrect later last-update (version).
This corrects r304780.
PR: 225029
Submitted by: ian
MFC after: 3 days
We use /usr/share/skel instead of /etc/skel. The existence of /etc/skel
has confused people.
PR: 46062 (submitted 2002-12-07)
PR: 218897
Submitted by: carl@slackerbsd.org
Submitted by: asv@inhio.net
