Commit 99132daf6f prepends /usr/lib32 to
the list of paths in ldconfig32_paths since it is a standard library
path in ld-elf32.so.1. Remove /usr/lib32 from the value in rc.conf so
that it is not listed twice.
Reviewed by: olce, kib
Sponsored by: University of Cambridge, Google, Inc.
Differential Revision: https://reviews.freebsd.org/D44752
Move logic that computes paths passed to ldconfig(8) to a
ldconfig_paths() function that can be called for multiple ABIs.
Reviewed by: olce, kib
Obtained from: CheriBSD
Differential Revision: https://reviews.freebsd.org/D44751
Read the elf note to decide when to set the guard page on arm64.
Reviewed by: kib
Sponsored by: Arm Ltd
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D39452
Don't check if the elf hints file is in host byte order, but check
if it is in little endian by looking at the magic number.
This fixes rtld on big endian platforms.
Reviewed by: se, kib (prior version of the patch)
Fixes: 7b77d37a56 ("rtld-elf: support either byte-order of hints")
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D44472
The byte-order independent code has been reported to fail on powerpc64.
Add some more debug statements to help identify the parametrs used and
to verify the correct operation of the byte-swap macros used..
Re-apply the -S switch to disable soft-updates in memory disks (commit
8b1292ac52). This might be beneficial when tmpfs(5) is not present in
the kernel, as this can cause mdmfs(8)'s auto keyword to fallback to
using md(4).
PR: 85558
MFC after: 1 week
Reviewed by: imp, emaste, brooks
Differential Revision: https://reviews.freebsd.org/D43242
this is a very early script to support cloudinit, it does not intend to
be a full featured cloudinit client, but will support a good enough
subset to be viable in most case.
It support nocloud and openstack config-2 config drive mode (iso9660 or
msdosfs)
The following features are currently supported:
- adding users (including a default user named 'freebsd' with password
'freebsd'
- adding groups
- adding ssh keys
- static ipv4, static ipv6, dynamic ipv4
With this one is able to use the 'bring your own image feature" out of
box.
It is expected that the script grows the support of other clouds
supporting cloud-init, contributions are welcomed.
It is designed to be only run once via the firstboot mecanism.
Sponsored by: OVHCloud
MFC After: 3 weeks
Differential Revision: https://reviews.freebsd.org/D44141
It is needed at least to ensure that undesirable code is not linked into
rtld from libsys/libc, and adding the map file option each time is not
productive.
Reviewed by: brooks, emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D44136
This will load/save the /var/run directories at boot/shutdown if
and only if /var/run/ is a tmpfs mount so it is a win for tmpfs
users and a no-op for everyone else.
Reviewed by: bapt
Differential Revision: https://reviews.freebsd.org/D44097
Sponsored by: Beckhoff Automation GmbH & Co. KG
Accept either little-endian or big-endian representation of the ELF
hints magic number in the header of a hints file and convert the
parameters to the native byte-order of the repsective system.
This is a pre-requisite for a planned change to always write the byte
order in little-endian format on all architectures. The only relvant
architecture that uses big-endian data is powerpc64, and it is not
likely that new architectures will choose that representation of data
in memory.
When all supported architectures use little-endian data in the hints
file, the byte swap logic can be enabled for big-endian CPUs at
compile time. Up to that point, there is a very small run-time penalty
that is paid on all systems to check the byte-order of the hints file
and to provide the option to byte-swap the parameters read from the
hints file header.
This commit contains the changes from review D44080 (which had been
split off from this patch for easier review),
Reviewed by: kib
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D44053
This is expected behavior for both dlopen(3) and fdlopen(3).
PR: 277169
Reviewed by: emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D44019
silent the warning seen at boot:
Mounting late filesystems:.
nextboot: unlink /boot/nextboot.conf: No such file or directory
Sun Feb 18 23:31:52 AKST 2024
FreeBSD/amd64 (main) (ttyv0)
login:
Differential Revision: https://reviews.freebsd.org/D43979
dlopen_basic just tests that libthr.so can be dlopen()ed, which will
just serve as a sanity check that "libthr.so" is a thing that can be
dlopened in case we get a weird failure in dlopen_recursing.
dlopen_recursing tests a regression reported after the libsys split,
where some dlopen() may cause infinite recursion and a resulting crash.
This case is inspired by bdrewery's description of what seemed to be
causing his issue.
The corresponding fix landed in commit
968a18975a ("rtld: ignore load_filtees() calls if we already [...]")
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D43859
in addition to avoiding it for already loaded filtees. Issue is that
during load, rtld needs to resolve some special ABI symbols, like
executable stack fixer and static TLS initializer, which might trigger
recursion.
Example is libthr which is filter for libsys, and which exports
__pthread_distribute_static_tls.
Tested by: kevans, krion
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D43858
SED=`Exists -x /usr/bin/sed /rescue/sed`
avoids adding /rescure to $PATH, and allows use of sed
before /usr is mounted (if a separate filesystem).
Reviewed by: jlduran_gmail.com
Differential Revision: https://reviews.freebsd.org/D43826
basename, sed and tty are all in /usr/bin and not available
until /usr is mounted.
basename and tty we can replace with a function, but sed is more
important. Fix o_verify to just use shell builtins, and
rc_trace should avoid trying to set RC_LEVEL until sed is available.
Debugging boot issues can be helped by
logging each rc.d script as it is run
and being able to selectively enable/disable set -x
debug.sh provides an elaborate framework for debugging shell scripts.
For secure systems, we want to be paranoid about what we read
during boot.
dot() simply reads (.) arg file if it exists
vdot() if mac_veriexec is active, ignore unverified files
otherwise behaves much the same as dot()
safe_dot() in safe_eval.sh allows reading an untrusted file;
limiting the input to simple variable assignments.
In load_rc_config allow caller to provide an option to indicate how to
handle its arg:
-v use vdot()
-s use sdot() which will try to use vdot() and fallback to safe_dot()
The default is to read using dot()
rc_run_scripts()
encapsulate the running of rc.d scripts
so that we can easily call it more than twice.
We vdot local.rc.subr to pick up extensions (like
run_rc_scripts_final) and overrides.
We also allow rc.subr.local or rc.conf to set rc_config_xtra
eg (rc_config_xtra=XXX for historic compatibility)
rc use set -o verify around the reading in of rc.subr
This has no effect if mac_veriexec is not active, but if it is; ensures
rc.subr has not been tampered with.
Reviewed by: imp
Sponsored by: Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D43671
IERS is the source of truth for leap seconds. Their leapsecond file is
updated most quickly and is always right (unlike the IANA one which
often lags). IERS operates this public service for the express purpose
of random people downloading it. Their terms of service are compatible
with open source (we could include this in our release). Rather than
fighting with questions around this because the IANA one changed
locations or the auto update script broken, just use this.
This is in preference to the NIST ftp copy. NIST is in the process of
retiring their FTP services.
Sponsored by: Netflix
Reviewed by: philip, delphij, cy
Differential Revision: https://reviews.freebsd.org/D43752
In order to atomically upgrade the rtld bind lock, load_filtees() may
trigger a longjmp back to _rtld_bind() so that the binding can be done
with the write lock held. However, the write lock is only needed when
filtee objects haven't already been loaded, so move the
lock_restart_for_upgrade() call to avoid unnecessary lock upgrades when
a filtee is defined.
Reviewed by: kib
Tested by: brooks
MFC after: 1 week
Sponsored by: Innovate UK
Some users wishing to use the MIT krb5kdc have discovered the
kdc script workaround applied to the MIT krb5 ports is insufficient.
Let's build into this rc script the smarts to determine whether
base or ports Hiemdal kdc is being invoked or the MIT krb5kdc.
While at it, remove kdc_start_precmd(). This will simplify a future
jail patch.
Suggested by: netchild
Original patch: netchild
Reviewed by: emaste, netchild
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D43523
Evaluate the jail_${jailname}_zfs_dataset variable for legacy
jail managers.
This variable can take a space separated list of datasets.
The singular was used specially to allow unmaintained jail
managers like ezjail to use this (simply rename
jail_${jailname}_zfs_datasets in the ezjail config to
jail_${jailname}_zfs_dataset).
Add a python script which implements the bulk of this functionality.
Over time, this would ideally evolve into a library of python routines
which can be used to inspect kernel data structures and automate some
debugging tasks, similar to jhb's out-of-tree scripts, but written in a
somewhat nicer language and with better integration into the kgdb
command prompt.
Note that kgdb currently won't auto-load scripts in this directory.
This should perhaps change in the future. It probably also makes more
sense to have a crashinfo.py which provides all the kgdb output that we
want to include in core.txt, rather than having crashinfo.sh pipe in
several commands.
Reviewed by: avg, imp
Discussed with: jhb
MFC after: 3 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33817
This was originally used (along with FREEBSD_AOUT) to prefer the use
of ELF in various tools instead of a.out as part of the a.out to ELF
transition in the 3.x days. The last use of it was removed from
<link.h> in commit 66422f5b7a back in
2002, but various files still #define it.
Reviewed by: kevans, imp, emaste
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D42964
This tests that with RTLD_DEEPBIND, symbols are looked up in all of the
object's needed objects before the global object.
PR: 275393
Reviewed by: kib
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D42843
before starting the walk over the global list. Effectively we visit
needed objects first as well, instead of just the object itself.
This seems to better match the semantic offered by the glibc flag.
Reported by: kevans
PR: 275393
Reviewed by: kevans
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D42841
Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.
Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/
Sponsored by: Netflix
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
This is done only for ld-elf32.so.1, where /lib32 is kept in the path
due to the way STANDARD_LIBRARY_PATH is defined in rtld_paths.h.
This change fixes innocent warning appearing after
99132daf6f
Reviewed by: dim, emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D42626
Ensure that ldconfig-managed elf and elf32 hints always include
the standard library paths that are known independently to rtld.
PR: 275031
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: Saltant Solutions LLC
Differential Revision: https://reviews.freebsd.org/D42557
Add sshd and local_unbound to the oom protected services.
syslogd is protected by default already, document it.
This was discussed on arch@, see
https://lists.freebsd.org/archives/freebsd-arch/2023-November/000543.html
sshd is protected to be able to investigate and fix oom issues on systems
which don't have out-of-band console access.
local_unbound is protected as it may be enabled for local use and without
DNS a lot grinds to a halt (including sshd).
Relnotes: yes
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D42544
