The early environment is typically cleared, so these new options
need the PRESERVE_EARLY_KENV kernel config(8) option. These environments
are reported as missing by kenv(1) if the option is not present in the
running kernel.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D30835
The syscall number is stored in the same register as the syscall return
on amd64 (and possibly other architectures) and so it is impossible to
recover in the signal handler after the call has returned. This small
tweak delivers it in the `si_value` field of the signal, which is
sufficient to catch capability violations and emulate them with a call
to a more-privileged process in the signal handler.
This reapplies 3a522ba1bc852c3d4660a4fa32e4a94999d09a47 with a fix for
the static assertion failure on i386.
Approved by: markj (mentor)
Reviewed by: kib, bcr (manpages)
Differential Revision: https://reviews.freebsd.org/D29185
This permits more efficient accesses of thread-local variables, which
are heavily used at least by jemalloc and locale-aware code. Note that
on amd64 and i386, jemalloc's thread-local variables already have their
TLS model overridden by defining JEMALLOC_TLS_MODEL.
For now the change is applied only to tested platforms, but should in
principle be enabled everywhere.
PR: 255840
Suggested by: jrtc27
Reviewed by: kib
MFC after: 2 months
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31070
- new sentence, new line
- tab in filled text
- unusual Xr order
- skipping paragraph macro: Pp before Ss
Reviewed by: bcr
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31143
- inserting missing end of block: Sh breaks Bl
- moving content out of list: Pp
- missing comma before name: Nm cap_*
- comma in function argument: cap_*
- skipping paragraph macro: Pp after Sh
- sections out of conventional order: Sh AUTHORS
Reviewed by: bcr
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31144
The syscall number is stored in the same register as the syscall return
on amd64 (and possibly other architectures) and so it is impossible to
recover in the signal handler after the call has returned. This small
tweak delivers it in the `si_value` field of the signal, which is
sufficient to catch capability violations and emulate them with a call
to a more-privileged process in the signal handler.
Approved by: markj (mentor)
Reviewed by: kib, bcr (manpages)
Differential Revision: https://reviews.freebsd.org/D29185
.Fa is the suitable macro for functions in comparsion to the
.Ar macro, which should be used for commandline arguments.
While here, fix some mandoc warnings.
Reviewed by: imp (earlier version)
Obtained from: OpenBSD (in partial)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D31090
Stop using the *NV version to retrieve states, as its performance is
unacceptably bad.
For 1,000,000 states the nvlist version needed ~100 seconds to retrieve
the states, the new version needs ~3 seconds.
Reviewed by: mjg
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D31098
These were all incorrectly labeled as 2-clause BSD licenses by a
semi-automated process, when in fact they are 3-clause.
Discussed with: pfg, imp
MFC after: 2 weeks
Sponsored by: Axcient
We must remember to free the nvlist we create from the kernel's response
to DIOCGETSTATESNV, on every iteration.
Reviewed by: donner
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30957
This call is particularly slow due to the large amount of data it
returns. Remove all fields pfctl does not use. There is no functional
impact to pfctl, but it somewhat speeds up the call.
It might affect other (i.e. non-FreeBSD) code that uses the new
interface, but this call is very new, so there's unlikely to be any. No
releases contained the previous version, so we choose to live with the
ABI modification.
Reviewed by: donner
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30944
I forgot to include this line in 2eb9ad427475190e87d026de4ca7fc296947f2a0.
Reported by: Jenkins CI
MFC after: 1 week
Fixes: 2eb9ad427475190ei ("Simplify and speed up the kyua build")
Instead of having multiple kyua libraries, just include the files as part
of usr.bin/kyua. Previously, we would build each kyua source up to four
times: once as a .o file and once as a .pieo. Additionally, the kyua
libraries might be built again for compat32. As all the kyua libraries
amount to 102 C++ sources the build time is significant (especially when
using an assertions enabled compiler). This change ensures that we build
306 fewer .cpp source files as part of buildworld.
Reviewed By: brooks
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30967
This introduces a new, per-process flag, "NO_NEW_PRIVS", which
is inherited, preserved on exec, and cannot be cleared. The flag,
when set, makes subsequent execs ignore any SUID and SGID bits,
instead executing those binaries as if they not set.
The main purpose of the flag is implementation of Linux
PROC_SET_NO_NEW_PRIVS prctl(2), and possibly also unpriviledged
chroot.
Reviewed By: kib
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D30939
This allows supported libpmc to query/select from the pmu-events table,
which may have a more complete set of events than what we define
manually. A future update to these definitions should greatly improve
this support. The alias table is empty for now, until this future import
is complete.
Add the Foundation's copyright for recent work on this file.
Reviewed by: ray (slightly earlier version)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30603
Finally, we have the correct function definition for strmode. NetBSD/OpenBSD
did this many years ago. This code is weird sign extension safe.
Reviewed by: imp@
Pull Request: https://github.com/freebsd/freebsd-src/pull/493
After df3b437c1e073eb83e9a93af1c417f3ee8d0de3b, older gcc's such as
4.2.1 (still used on earlier branches for e.g. mips and powerpc) and
6.3.0 (still used for some cross-builds) started throwing bogus errors
like:
In file included from /workspace/src/lib/msun/src/s_llround.c:11:0:
/workspace/src/lib/msun/src/s_lround.c:54:31: error: initializer element is not constant
static const type dtype_min = type_min - 0.5;
^~~~~~~~
/workspace/src/lib/msun/src/s_lround.c:55:31: error: initializer element is not constant
static const type dtype_max = type_max + 0.5;
^~~~~~~~
Since 'type_min' and 'type_max' are constants declared just above these
lines this error is nonsensical, but older gcc's are not smart enough.
Work around the error by reusing the (type)DTYPE_MIN and (type)DTYPE_MAX
macros, so I can MFC this right away, unbreaking a few stable builds.
MFC after: immediately
When debugging POSIX shared memory issues, it's really
useful to learn that there is a command line tool now
to manipulate shared memory segments.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D30896
so that libc vdso and kernel syscall give closer results.
Reported by: dchagin
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30873
Call binuptime inside switch statement, instead of pre-calculating
the abs argument.
Change the type of the abs argument to bool.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30873
It turned out that the (type)DTYPE_MAX conversions at the top of
s_lround.c are now emitted as cvtsi2sd instructions, at least on SSE
capable CPUs. This caused the FE_INEXACT flag to always be set, at least
for the double and float variants. Under clang 11, the whole INRANGE()
comparisons were still optimized away, but this has "improved" in clang
12, due to stricter adherence to the -ffp-exception-behavior=maytrap
compiler flag.
To avoid run-time integer to float conversions, use static constants
instead, so they are computed at compile time, and the INRANGE()
statements are optimized away again, if applicable.
While here, use an integer instead of a floating type to store the test
results in lround_test.c, as this is more appropriate, and we can also
drop the volatile hack.
Reported by: arichardson
MFC after: 3 days
Otherwise, the lli tool (enable by WITH_CLANG_EXTRAS) won't link on arm,
stating that __register_frame is undefined. This function is normally
provided by libunwind, but explicitly not for the ARM Exception ABI.
Reported by: oh
PR: 255570
MFC after: 6 weeks
These were already compiled for some time on aarch64 and riscv, by
including lib/libcompiler_rt/Makefile.inc, but never exported in the
shared library. Since gcc exports these under version GCC_4.6.0, we do
the same.
This review should replace D11482 for now. For e.g. amd64 more work is
still to be done, as compiler-rt does not seem to support 128 bit long
double math for that architecture.
Reviewed by: cem
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D28690
Implement the "gconcat append" command which can be used
to append a disk to the end of an existing gconcat device
without unmounting.
If the gconcat device is using the "automatic" method, i.e.,
stores metadata on the devices, new metadata is written
to all existing components, as well as to the newly added one.
Pull Request: https://github.com/freebsd/freebsd-src/pull/472
Reviewed by: imp@
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-12-init-17869-g8e464dd76bef, the last commit before the
upstream release/12.x branch was created.
PR: 255570
MFC after: 6 weeks
Make sure the "device_is_gone" flag is cleared after every successful open,
so that the "device_is_gone" flag doesn't persist forever.
Found by: sergii.dmytruk@3mdeb.com
PR: 256296
MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking
Casper services expect that the first 3 descriptors (stdin/stdout/stderr)
will point to /dev/null. Which Casper will ensure later. The Casper
services are forked from the original process. If the initial process
closes one of those descriptors, Casper may reuse one of them for it on
purpose. If this is the case, then renumarate the descriptors used by
Casper to higher numbers. This is done already after the fork, so it
doesn't break the parent process.
PR: 225343
Reported by: Borja Marcos <borjam (at) sarenet.es>
Tested by: jkim@
Create a casper service for netdb functions.
Initially only cap_getprotobyname is implemented.
This is needed for capsicumizing sockstat.
Reviewed by: oshogbo, bcr (manpages)
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D24832
I missed adding these to the libc++ Makefile, when importing
llvm-project 11.0.0-rc1, even though they were supplied by upstream.
While here, update OptionalObsoleteFiles.inc to add these new headers,
and cleanup old cruft.
Reported by: yuri
Submitted by: jkim (Makefile diff)
PR: 255374
MFC after: 3 days
We can use the buffer passed to fread(3) directly in the FILE *.
The buffer needs to be reset before each call to __srefill().
This preserves the expected behavior in all cases.
The change was found originally in OpenBSD and later adopted by NetBSD.
MFC after: 2 weeks
Obtained from: OpenBSD (CVS 1.18)
Differential Revision: https://reviews.freebsd.org/D30548
The current version has every function stubbed out for !x86. Only two
functions (pmu_alias_get() and pmc_pmu_pmcallocate() are really platform
dependent, so reduce the width of the ifdefs and remove some of the
stubs.
Reviewed by: ray
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30532
Although currently unused, there are only pmu event definitions for
POWER8 and POWER9. There is no sense in building these on 32-bit
platforms.
Sponsored by: The FreeBSD Foundation
This is preferred over $MACHINE_ARCH for these types of checks, although
it makes no difference for amd64 or i386. No functional change intended.
Sponsored by: The FreeBSD Foundation
The jevents build tool will create an empty table if it doesn't find any
events, so we can remove the extra $MACHINE_CPUARCH checks.
Reviewed by: gnn, ray, emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30531
It has never been a part of upstream's struct pmu_event. The jevents
utility will not fill this field, so remove it.
Reviewed by: gnn
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30530
There is a single consumer, the pmc utility, that clearly has knowledge
of which counters it is expecting. Remove this function and have it
use common counter aliases instead.
Reviewed by: gnn
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30528
The typo prevents the counter from being allocated.
This fixes e.g. pmcstat -s instructions sleep 5
Reviewed by: mizhka, gnn, ray, emaste
MFC after: 5 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30527
