This restores nextboot -k on ZFS setups where /boot is on the root
dataset of a pool.
Reviewed by: jrtc27, glebius
Fixes: 0c3ade2cf1 nextboot: fix nextboot -k on ZFS
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D45306
As in the old nextboot.sh script:
- First write everything to a tempfile instead of /boot/nextboot.conf.
- fsync() the tempfile before renaming it to nextboot.conf.
Fixes: fd6d47375a ("rescue,nextboot: Install nextboot as a link to reboot, rm nextboot.sh")
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D44572
Emulate rm -f from the nextboot.sh script: Report all errors, except
ENOENT. This problems show through, except the expected one when
nextboot.conf isn't there.
Sponsored by: Netflix
Reviewed by: rew
Differential Revision: https://reviews.freebsd.org/D44013
It used to produce no output when the file couldn't be removed. Emulate
that better by unlinking and ignoring errors. It's used at the end of
reboot always, even when the file isn't going to be there.
Sponsored by: Netflix
Fixes: 2c47954811
envorin isn't defined in any header, and gcc is cranky with this inside
a function, so move it to global scope. Both clang and gcc are now happy
with this.
Sponsored by: Netflix
Use posix_spawn to avoid having to allocate memory needed for the system
command line.
Sponsored by: Netflix
Reviewed by: jrtc27
Differential Revision: https://reviews.freebsd.org/D43860
Make static analyzers happy by initialzing howto to 0. Coverity is
cranky that it could be used unused. But it's analysis is incomplete
because the args to getopt when it wasn't initialized preclude it from
being used.
Reboot now emulates the nextboot shell script completely. Retire the
nextboot.sh script and install the link. Retain the same manual page,
since there's enough differences between nextboot and reboot that
talking about nextboot would likely be confusing in nextboot.8
The nextboot.sh script no longer exists, so doesn't need to be fixed up
to create rescue. However, now we need a link from nextboot to reboot.
Sponsored by: Netflix
Reviewed by: kevans
Differential Revision: https://reviews.freebsd.org/D43831
Differential Revision: https://reviews.freebsd.org/D43843
Allow nextboot to be a symlink link to reboot. It does everything reboot
does, except doesn't actually setup the sytem to reboot and reboot. Also,
don't accept the reboot args related to rebooting when in nextboot mode.
Sponsored by: Netflix
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D43830
kernel isn't special, beyond the sanity checks we do. Add it to the env
rather than pass it into write_nextboot().
Sponsored by: Netflix
Reviewed by: kevans, kib
Differential Revision: https://reviews.freebsd.org/D43828
Implement -e foo=bar to add loader environment variables to
nextboot.conf. bar is enclosed in quotes if it isn't already.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D43827
Implement full support for ZFS -k support. For ZFS, we have to set a
property that gets cleared by the boot loaeder for whether or not to
process nextboot.conf. Do this using system("zfsbootcfg..." rather than
coding the small subset of that program inline to avoid CDDL
contamination of reboot and the complications of disabling CDDL and/or
ZFS. The few bytes needed to implement reboot for systems with zfs is
not worth saving for systems w/o ZFS.
Only set nextboot_enable=YES for UFS filesystems. They are the only one
that need that as the first line. Its presence on ZFS can cause the
kernel to not be oneshot.
Sponsored by: Netflix
Reviewed by: kevans, kib
Differential Revision: https://reviews.freebsd.org/D43824
Implement -D from nextboot.sh which deletes the nextboot.conf file and
exists.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D43822
Add sanity checking to the write to nextboot. Move to separate function
and allow force to override all errors. If we can't write nextboot.conf,
don't silently fail anymore.
Sponsored by: Netflix
Reviewed by: kevans, kib, markj, jhb
Differential Revision: https://reviews.freebsd.org/D43803
reboot -k garbage won't boot garbage unless /boot/garbage/kernel is
there. Refuse to reboot if it is missing, though allow -f to force
it for special-use cases. This is in keeping with nextboot.sh.
Sponsored by: Netflix
Reviewed by: kevans, kib, markj, emaste
Differential Revision: https://reviews.freebsd.org/D43802
Convert all the command line flags to bools, since that's how we use
them. Sort the includes while adding stdbool.h.
Sponsored by: Netflix
Reviewed by: kevans, kib, emaste
Differential Revision: https://reviews.freebsd.org/D43801
When we're re-rooting to a new /, there is no next kernel. Error out
rather than leaving a timebomb in /boot/nextboot.conf.
Sponsored by: Netflix
Reviewed by: kevans, kib, emaste
Differential Revision: https://reviews.freebsd.org/D43800
We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals. These copyright strings are present in the comments and
are largely from CSRG's attempt at adding their copyright to every
binary file (which modern interpretations of the license doesn't
require).
Sponsored by: Netflix
Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.
Sponsored by: Netflix
9600 was a standard baud rate decades ago, but 115200 is now more common
so choose defaults that are useful to the largest number of users.
Note that boot0sio does not support rates above 9600 so it remains
unchanged.
Reviewed by: bz, imp, manu
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D36295
In most cases, usage does not return, so mark them as __dead2. For the
cases where they do return, they have not been marked __dead2.
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/735
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.
Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix
Add boottrace annotations to record events in init(8), shutdown(8), and
reboot(8).
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
X-NetApp-PR: #23
Differential Revision: https://reviews.freebsd.org/D31928
the /boot/nextboot.conf file or its contents which is 1) not the most user-
friendly way of working with custom configurations, and 2) simply not true
for both Forth and Lua implementations: they would not delete it, but just
change the setting to "NO", that is, disable it.
While at it, add one missing serial (Oxford) comma and fix some bogus line
wraps along the way.
Approved by: bcr (manpages)
Differential Revision: https://reviews.freebsd.org/D25971
Fix unquoted test for an empty value, which broke nextboot(8) on non-ZFS /boot
systems after r365938.
Discussed with: allanjude, tsoome
X-MFC-With: r365938
bootonce feature is temporary, one time boot, activated by
"bectl activate -t BE", "bectl activate -T BE" will reset the bootonce flag.
By default, the bootonce setting is reset on attempt to boot and the next
boot will use previously active BE.
By setting zfs_bootonce_activate="YES" in rc.conf, the bootonce BE will
be set permanently active.
bootonce dataset name is recorded in boot pool labels, bootenv area.
in case of nextboot, the nextboot_enable boolean variable is recorded in
freebsd:nvstore nvlist, also stored in boot pool label bootenv area.
On boot, the loader will process /boot/nextboot.conf if nextboot_enable
is "YES", and will set nextboot_enable to "NO", preventing /boot/nextboot.conf
processing on next boot.
bootonce and nextboot features are usable in both UEFI and BIOS boot.
To use bootonce/nextboot features, the boot loader needs to be updated on disk;
if loader.efi is stored on ESP, then ESP needs to be updated and
for BIOS boot, stage2 (zfsboot or gptzfsboot) needs to be updated
(gpart or other tools).
At this time, only lua loader is updated.
Sponsored by: Netflix, Klara Inc.
Differential Revision: https://reviews.freebsd.org/D25512
Provide hints to direct people towards gptzfsboot, zfsbootcfg, efibootmgr, etc
PR: 199103
MFC after: 2 weeks
Sponsored by: Klara Inc.
Event: July 2020 Bugathon
x86 boot uses loader(8) and the boot2-direct-to-kernel process is not
supported. Remove the documentation, which doesn't document a working
process and leads to confusion.
PR: 247074
Reported by: Alex K.
fasthalt has behaved like reboot, instead of like halt, since r228408
(2011, 10.0-RELEASE). Fix it. One wonders if anyone will notice.
Approved by: re (kib)
MFC after: 3 days
Sponsored by: Dell EMC Isilon
Perhaps RB_MUTE could mute user startup (rc) output as well, but right
now it mutes only kernel console output, so make the documentation match
reality.
PR: 228193
Sponsored by: The FreeBSD Foundation
