first, the condition (mem && k < p) is redundant, because mem being
nonzero implies the needle is periodic with period exactly p, in which
case any byte that appears in the needle must appear in the last p
bytes of the needle, bounding the shift (k) by p.
second, the whole point of replacing the shift k by mem (=l-p) is to
prevent shifting by less than mem when discarding the memory on shift,
in which case linear time could not be guaranteed. but as written, the
check also replaced shifts greater than mem by mem, reducing the
benefit of the shift. there is no possible benefit to this reduction of
the shift; since mem is being cleared, the full shift is valid and
more optimal. so only replace the shift by mem when it would be less
than mem.
musl commits:
8f5a820d147da36bcdbddd201b35d293699dacd8
122d67f846cb0be2c9e1c3880db9eb9545bbe38c
Obtained from: musl
MFC after: 2 weeks
We have adopted these and don't consider them 'contrib' code, so bring
them closer to style(9). This is a followon to r315467 and r351700.
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
This function returns the path to the local software base directory, by
default "/usr/local" (or the value of _PATH_LOCALBASE in include/paths.h
when building the world).
The value returned can be overridden by 2 methods:
- the LOCALBASE environment variable (ignored by SUID programs)
- else a non-default user.localbase sysctl value
Reviewed by: hps (earlier version)
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D27236
Some platforms have additional architecture-specific floating-point flags.
Msun test cases lrint and test_fegsetenv (fenv) expects only standard flags,
so make sure to mask them appropriately.
This makes test pass on PowerPC64.
Reviewed by: jhibbits, ngie
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D27202
No functional change intended.
Tracking these structures separately for each proc enables future work to
correctly emulate clone(2) in linux(4).
__FreeBSD_version is bumped (to 1300130) for consumption by, e.g., lsof.
Reviewed by: kib
Discussed with: markj, mjg
Differential Revision: https://reviews.freebsd.org/D27037
Fix incorrect mask being used when FE_INVALID bit is wanted by user.
The problem was noticed thanks to msun fenv tests.
Reviewed by: jhibbits, luporl
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D27201
Specifically, if we're waking up some value n > BATCH_SIZE, then the
copyin(9) is wrong on the second iteration due to upp being the wrong type.
upp is currently a uint32_t**, so upp + pos advances it by twice as many
elements as it should (host pointer size vs. compat32 pointer size).
Fix it by just making upp a uint32_t*; it's still technically a double
pointer, but the distinction doesn't matter all that much here since we're
just doing arithmetic on it.
Add a test case that demonstrates the problem, placed with the libthr tests
since one messing with _umtx_op should be running these tests. Running under
compat32, the new test case will hang as threads after the first 128 get
missed in the wake. it's not immediately clear how to hit it in practice,
since pthread_cond_broadcast() uses a smaller (sleepq batch?) size observed
to be around ~50 -- I did not spend much time digging into it.
The uintptr_t change makes no functional difference, but i've tossed it in
since it's more accurate (semantically).
Reported by: Andrew Gierth (andrew_tao173.riddles.org.uk, inspection)
Reviewed by: kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D27231
This clever technique to get a time remaining back was added to support sem_clockwait_np.
Reviewed by: kib, vangyzen
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D27160
unify the retrieval of the various ways that the local software base directory,
typically "/usr/local", is expressed in the system.
Reviewed by: se
Differential Revision: https://reviews.freebsd.org/D27022
This was missed in r364221 so tests were not built.
Reviewed by: bdrewery
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D27210
libarchive depends on it by default and tar uses libarchive.
So on a update :
1/ runtime contain tar
2/ runtime have libarchive in shlibs_required
3/ libarchive packages depends on utilities
4/ utilities depends on runtime
5/ kaboom
All users of libprivatezstd (libarchive related stuff and objcopy/ar)
are already in utilities.
Discussed with: bapt
- Force dynamic to be a non-PIE binary.
- Add a dynamicpie test which uses a PIE binary.
Reviewed by: andrew
Obtained from: CheriBSD
MFC after: 2 weeks
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D27127
PIE executables use crtbeginS.o and have a non-NULL dso_handle as a
result.
Reviewed by: andrew, emaste
MFC after: 2 weeks
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D27126
This is more consistent with the names used for .ctor and .dtor
symbols and better reflects __JCR_END__'s role.
Reviewed by: andrew
Obtained from: CheriBSD
MFC after: 2 weeks
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D27125
Provide a way to ask for an opaque version string for a locale_t, so
that potential changes in sort order can be detected. Similar to
ICU's ucol_getVersion() and Windows' GetNLSVersionEx(), this API is
intended to allow databases to detect when text order-based indexes
might need to be rebuilt.
The CLDR version is extracted from CLDR source data by the Makefile
under tools/tools/locale, written into the machine-generated Makefile
under shared/colldef, passed to localedef -V, and then written into
LC_COLLATE file headers. The initial version is 34.0.
tools/tools/locale was recently updated to pull down 35.0, but the
output hasn't been committed under share/colldef yet, so that will
provide the first observable change when it happens. Other versioning
schemes are possible in future, because the format is unspecified.
Reviewed by: bapt, 0mp, kib, yuripv (albeit a long time ago)
Differential Revision: https://reviews.freebsd.org/D17166
According to code comments the original motivation was to allow for
malloc_type_internal changes without ABI breakage. This can be trivially
accomplished by providing spare fields and versioning the struct, as
implemented in the patch below.
The upshots are one less memory indirection on each alloc and disappearance
of mt_zone.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D27104
PowerPC kernel is of DYN type and it has a base address where it is
initially loaded, before being relocated. As the start address passed to
pmcstat_image_link() is where the kernel was relocated to, but the symbols
always use the original base address, we need to subtract it to get the
correct offset.
Reviewed by: jhibbits
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D26114
This change adds support for POWER8/9 performance counters.
Reviewed by: jhibbits
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D26113
Use uintptr_t to cast a uint64_t to a pointer type.
Yeah, it isn't technically correct for platforms with pointers
> 64 bits, but it's fine here.
This fixes 32 bit compat library builds on amd64 and also
mips32 builds.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D26790
This sysctl value had been provided as a read-only variable that is
compiled into the C library based on the value of _PATH_LOCALBASE in
paths.h.
After this change, the value is compiled into the kernel as an empty
string, which is translated to _PATH_LOCALBASE by the C library.
This empty string can be overridden at boot time or by a privileged
user at run time and will then be returned by sysctl.
When set to an empty string, the value returned by sysctl reverts to
_PATH_LOCALBASE.
This update does not change the behavior on any system that does
not modify the default value of user.localbase.
I consider this change as experimental and would prefer if the run-time
write permission was reconsidered and the sysctl variable defined with
CLFLAG_RDTUN instead to restrict it to be set at boot time.
MFC after: 1 month
The value is provided by the C library as for other sysctl variables in
the user tree. It is compiled in and returns the value of _PATH_LOCALBASE
defined in paths.h.
Reviewed by: imp, scottl
Differential Revision: https://reviews.freebsd.org/D27009
more readable. While here, add linux_check_errtbl() function to make
sure we don't leave holes.
No objections: emaste (earlier version)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26972
r366981 disabled ASAN when it might not be reliable (with an external
compiler), but this test is broken without ASAN so disable it completely
in that case.
PR: 250706
Reviewed by: emaste, lwhsu
Differential Revision: https://reviews.freebsd.org/D26982
Foundation copyrights, approved by emaste@. It does not include
files which carry other people's copyrights; if you're one
of those people, feel free to make similar change.
Reviewed by: emaste, imp, gbe (manpages)
Differential Revision: https://reviews.freebsd.org/D26980
Clang's optimizer spends a really long time on these tests at -O2, so we now
use -O0 instead. This reduces the -j32 time for lib/googletest/test from 131s
to 29s. Using -O0 also reduces the disk usage from 144MB (at -O2) / 92MB (at
-O1) to 82MB.
Reviewed By: ngie, dim
Differential Revision: https://reviews.freebsd.org/D26751
Literal references to /usr/local exist in a large number of files in
the FreeBSD base system. Many are in contributed software, in configuration
files, or in the documentation, but 19 uses have been identified in C
source files or headers outside the contrib and sys/contrib directories.
This commit makes it possible to set _PATH_LOCALBASE in paths.h to use
a different prefix for locally installed software.
In order to avoid changes to openssh source files, LOCALBASE is passed to
the build via Makefiles under src/secure. While _PATH_LOCALBASE could have
been used here, there is precedent in the construction of the path used to
a xauth program which depends on the LOCALBASE value passed on the compiler
command line to select a non-default directory.
This could be changed in a later commit to make the openssh build
consistently use _PATH_LOCALBASE. It is considered out-of-scope for this
commit.
Reviewed by: imp
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D26942
The intel compiler support has badly decayed over the years. Stop
pretending that we support it. Note, I've stopped short of requiring
gcc builtin support with this commit since other compilers may be used
to build non-base software and we need to support those so more
investigation is needed before simplifying further.
libjail is pretty small, so it makes for a good proof of concept demonstrating
how a system library can be wrapped to create a loadable Lua module for flua.
* Introduce 3lua section for man pages
* Add libjail module
Reviewed by: kevans, manpages
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D26080
I noticed after the review that these shouldn't be static. Remove the
'static' from them, otherwise concurrent calls to warn* might see a
similar but to the original.
When warn() family of functions is being used after err_set_file() has
been set to, for example, /dev/null, errno is being clobbered,
rendering it unreliable after, for example, procstat_getpathname()
when it is supposed to emit a warning. Then the errno is changed to
Inappropriate ioctl for device, destroying the original value (via
calls to fprintf()functions).
Submitted by: Juraj Lutter
Differential Revision: https://reviews.freebsd.org/D26871
When building FreeBSD 11 on a FreeBSD 12 system with
CROSS_TOOLCHAIN=llvm10 we end up trying to link against the packaged
version of the sanitizer library. This resulted in a requirement for
getentropy(3) which is not present in FreeBSD 11.
Reviewed by: emaste
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D26903
GNU and Oracle libelf implementations added support for section
compression, intended to reduce the size of DWARF debug info (which
might be an order of magnitude larger than the code).
There are two compressed ELF section formats:
1. Old GNU - sections are renmaed to start with 'z'. Section contains
a magic number, uncompressed size, and compressed data.
2. Oracle and New GNU - compressed sections use the SHF_COMPRESSED flag.
The compression header contains the compression type, uncompressed
size, and uncompressed alignment.
The second style is preferred and this change implements only that one.
Submitted by: Tiger Gao <tig@FreeBSDFoundation.org>
Reviewed by: markj
MFC after: 2 weeks
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24566
Move list_cloners() from ifconfig(8) to libifconfig(3) where it can be
reused by other consumers.
Reviewed by: kp
Differential Revision: https://reviews.freebsd.org/D26858
- Hide ptsname_r under __BSD_VISIBLE for now as the specification
is not finalized at this time.
- Keep Symbol.map sorted.
- Avoid the interposing of ptsname_r(3) from an user application
from breaking ptsname(3) by making the implementation a static
method and call the static function from ptsname(3) instead.
Reported by: kib
Reviewed by: kib, jilles
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D26845
This saves a few seconds in a parallel build since we can build the
gtest_main and gmock subdirectories in parallel.
Reviewed By: ngie
Differential Revision: https://reviews.freebsd.org/D26760
Currently the googletest internal tests build after the matching library.
However, each of these is serialized at the top level makefile.
Additionally some of the tests (e.g. the gmock-matches-test) take up to
90 seconds to build with clang -O2. Having to wait for this test to
complete before continuing to the next directory seriously slows down the
parllelism of a -j32 build.
Before this change running `make -C lib/googletest -j32 -s` in buildenv
took 202 seconds, now it's 153 due to improved parallelism.
Reviewed By: emaste (no objection)
Differential Revision: https://reviews.freebsd.org/D26748
While toying around with lua bindings for libbe(3), I discovered that I
apparently never documented this, despite having documented
be_is_auto_snapshot_name that references it.
MFC after: 1 week
libbe will never need to mutate these as we either process them into a local
buffer or we just don't touch them and write to a separate out argument.
MFC after: 1 week
When compiling without casper these API calls result in unused variable warnings.
Using #defines was lovely in the past but unfortunately it triggers warnings
which can cascade into errors.
Instead, just inline with some fallthrough functions and keep things happy.
Tested:
* gcc-6 targeting mips32, with casper disabled
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D26762
Use designated initializers to document positions in the arrays rather
than requiring counting. Use nitems() rather than rolling it by hand to
count elements.
Also, passify a Clang 12 warning about suspcious string concatenation
within an array initializer by adding parentheses.
Reviewed by: emaste
MFC after: 1 week
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D26592
I noticed that this part of the build was taking much longer than
expected. Turns out it's due to not running the subdirs in parallel.
Reduces `make all` inside lib/libclang_rt time from 63s to 20s with -j32.
Reviewed By: dim
Differential Revision: https://reviews.freebsd.org/D26623
We have to bootstrap arc4random.c, so guard the FenestrasX code to avoid
using it on Linux/macOS.
Reviewed By: cem
Differential Revision: https://reviews.freebsd.org/D26738
Push the root seed version to userspace through the VDSO page, if
the RANDOM_FENESTRASX algorithm is enabled. Otherwise, there is no
functional change. The mechanism can be disabled with
debug.fxrng_vdso_enable=0.
arc4random(3) obtains a pointer to the root seed version published by
the kernel in the shared page at allocation time. Like arc4random(9),
it maintains its own per-process copy of the seed version corresponding
to the root seed version at the time it last rekeyed. On read requests,
the process seed version is compared with the version published in the
shared page; if they do not match, arc4random(3) reseeds from the
kernel before providing generated output.
This change does not implement the FenestrasX concept of PCPU userspace
generators seeded from a per-process base generator. That change is
left for future discussion/work.
Reviewed by: kib (previous version)
Approved by: csprng (me -- only touching FXRNG here)
Differential Revision: https://reviews.freebsd.org/D22839
Sort a few VHT160 and 80+80 lines, update some comments, and remove
a superfluous ','.
No functional changes intended.
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
VirtFS allows sharing an arbitrary directory tree between bhyve virtual
machine and the host. Current implementation has a fairly complete support
for 9P2000.L protocol, except for the extended attribute support. It has
been verified to work with the qemu-kvm hypervisor.
Reviewed by: rgrimes, emaste, jhb, trasz
Approved by: trasz (mentor)
MFC after: 1 month
Relnotes: yes
Sponsored by: Conclusive Engineering (development), vStack.com (funding)
Differential Revision: https://reviews.freebsd.org/D10335
newlocale() optionally takes a "base" locale, from which components not
specified in the mask are inherited. POSIX says that newlocale() may
modify "base" and return it, or free "base" and return a newly allocated
locale. We were not doing either, so applications which use newlocale()
to modify an existing base locale end up leaking memory on FreeBSD.
This diff fixes the leak by releasing a reference to the base locale
before returning. This is less efficient than modifying "base"
directly, but is simpler for an initial bug fix. Also, update the man
page to clarify behaviour with respect to "base".
PR: 249416
MFC after: 3 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26522
r366344 fixed and reenabled the assembly optimized skein implementation,
but skein_block objects were not being rebuilt in no-clean builds. This
resulted in failing no-clean builds. SKEIN_USE_ASM controls which
routines come from C vs assembly, and with no explicit dependency
r366344's change to SKEIN_USE_ASM did not cause skein_block.{o,pico}
to be rebuilt.
Add a dependency on this Makefile for the skein_block objects. This
dependency is broader in scope than absolutely required (that is, the
skein_block objects will now be rebuilt on any change to this Makefile).
There are ways this could be addressed, but it is probably not worth the
additional effort or testing time to pursue them.
PR: 248221
Reported by: kevans, Jeremy Faulkner
Discussed with: kevans
Sponsored by: The FreeBSD Foundation
The assembly implementation incorrectly used logical AND instead of
bitwise AND. Fix, and re-enable in libmd.
Submitted by: Yang Zhong <yzhong@freebsdfoundation.org>
Reviewed by: cem (earlier)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26614
The warning generated pre-r366207 is actually a sign comparison warning:
error: comparison of integers of different signs: 'unsigned long' and 'int'
if (strlcpy(buf, execpath, buflen) >= buflen)
Revert parts that affected other lines and just cast this to unsigned int.
The buflen < 0 -> EINVAL has been kept despite no longer serving any
purposes w.r.t. sign-extension because I do believe it's the right thing to
do: "The provided buffer was not the right size for the requested item."
The original warning is confirmed to still be gone with an:
env WARNS=6 make WITHOUT_TESTS=yes.
Reviewed by: asomers, kib
X-MFC-With: r366207
Differential Revision: https://reviews.freebsd.org/D26631
Define separate dependent targets which `afterinstallconfigs` relies on, in
order to modify `${DESTDIR}/etc/master.passwd` and
`${DESTDIR}/etc/nsswitch.conf`.
Mark these targets .PHONY, since they manipulate configurations on the fly and
the generation logic isn't 100% defined in terms of the source files/logic,
and is variable, based on MK_foo flags.
MFC after: 2 weeks
Reviewed by: bapt, brd
Differential Revision: https://reviews.freebsd.org/D20330
Repeating the default WARNS here makes it slightly more difficult to
experiment with default WARNS changes, e.g. if we did something absolutely
bananas and introduced a WARNS=7 and wanted to try lifting the default to
that.
Drop most of them; there is one in the blake2 kernel module, but I suspect
it should be dropped -- the default WARNS in the rest of the build doesn't
currently apply to kernel modules, and I haven't put too much thought into
whether it makes sense to make it so.
Due to the sqlite3 endian detection code preferring to check platform defines
instead of checking endian defines, it is necessary to manually set
the endianness on PowerPC64LE.
Unlike other bi-endian platforms, PowerPC64LE relies entirely on the
generic endianness macros like __BYTE_ORDER__ and has no platform-specific
define to denote little endian.
Add -DSQLITE_BYTEORDER=1234 to the CFLAGS when building libsqlite3 on
powerpc64le.
Fixes runtime operation of sqlite on PowerPC64LE.
Sponsored by: Tag1 Consulting, Inc.
gdtoa wins the award for "most outdated endianness naming convention"
with its IEEE_8087 vs IEEE_MC68k defines. I had a good chuckle.
Update softfloat and arith.h to adjust to BE or LE automatically
based on the low level preprocessor defines.
Fixes printf/scanf on PowerPC64LE, although there is still a problem
lurking regarding Signalling NaNs...
Sponsored by: Tag1 Consulting, Inc.
Given that we have converted to ELFv2 for BE already, endianness is the only
difference between the two ARCHs.
As such, there is no need to differentiate LIBC_ARCH between the two.
Combining them like this lets us avoid needing to have two copies of several
bits for no good reason.
Sponsored by: Tag1 Consulting, Inc.
On Ampere Altra systems, the sparse population of RAM within the
physical address space causes the vm_page_dump bitmap to be much
larger than necessary, increasing the size from ~8 Mib to > 2 Gib
(and overflowing `int` for the size).
Changing the page dump bitmap also changes the minidump file
format, so changes are also necessary in libkvm.
Reviewed by: jhb
Approved by: scottl (implicit)
MFC after: 1 week
Sponsored by: Ampere Computing, Inc.
Differential Revision: https://reviews.freebsd.org/D26131
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
by Steve Kargl:
- Use sincos[f] instead of a call to cos[f] and a call to sin[f].
- While here, alphabetize declaration.
Submitted by: sgk at troutmask.apl.washington.edu (Steve Kargl)
- Micro-optimization: use sincosl(x) instead of a call to cosl(x) and
a call to sinl(x). Argument reduction is done once not twice.
- Use a long double constant instead of an invalid double constant.
- Spell scale2 correctly
He could not test ld128, so that patch is untested.
Submitted by: sgk at troutmask.apl.washington.edu (Steve Kargl)
API to the sbget() and sbput() interfaces. Specifically they take
a file descriptor pointer rather than the struct uufsd *disk pointer
used by the libufs cgread() and cgwrite() interfaces. Update fsck_ffs
to use these revised interfaces.
No functional changes intended.
Sponsored by: Netflix
Sometimes nscd(8) will return a 1-byte buffer for a nonexistent entry. This
triggered an integer underflow in grp_unmarshal_func, causing getgrnam_r to
return ERANGE instead of 0.
Fix the user's buffer size check, and add a correct check for a too-small
nscd buffer.
PR: 248932
Event: September 2020 Bugathon
Reviewed by: markj
MFC after: 2 weeks
Sponsored by: Axcient
Differential Revision: https://reviews.freebsd.org/D26204
The current default is provided in various Makefile.inc in some top-level
directories and covers a good portion of the tree, but doesn't cover parts
of the build a little deeper (e.g. libcasper).
Provide a default in src.sys.mk and set WARNS to it in bsd.sys.mk if that
variable is defined. This lets us relatively cleanly provide a default WARNS
no matter where you're building in the src tree without breaking things
outside of the tree.
Crunchgen has been updated as a bootstrap tool to work on this change
because it needs r365605 at a minimum to succeed. The cleanup necessary to
successfully walk over this change on WITHOUT_CLEAN builds has been added.
There is a supplemental project to this to list all of the warnings that are
encountered when the environment has WARNS=6 NO_WERROR=yes:
https://warns.kevans.dev -- this project will hopefully eventually go away
in favor of CI doing a much better job than it.
Reviewed by: emaste, brooks, ngie (all earlier version)
Reviewed by: emaste, arichardson (depend-cleanup.sh change)
Differential Revision: https://reviews.freebsd.org/D26455
I was investigating libarchive test failures on CheriBSD and it turns out
we get a reproducible SIGBUS for test_archive_m5, etc. Debugging this shows
that libarchive and the tests disagree when it comes to the definition of
archive_md5_ctx: libarchive assumes it's the OpenSSL type whereas the test
use the libmd type. The latter is not necessarily aligned enough to store
a pointer (16 bytes for CHERI RISC-V), so we were crashing when storing
EVP_MD_CTX* to an 8-byte-aligned archive_md5_ctx.
To avoid problems like this in the future, factor out the common compiler
flags into a Makefile.inc and include that from the tests Makefile.
Reviewed By: lwhsu
Differential Revision: https://reviews.freebsd.org/D26469
Use MACHINE_CPUARCH with arm64 (aarch64) when we build code that could run
on any 64-bit Arm instruction set. This will simplify checks in downstream
consumers targeting prototype instruction sets.
The only place we check for MACHINE_ARCH == aarch64 is when building the
device tree blobs. As these are targeting current generation ISAs.
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D26370
This would allow interested parties to do experimental runs with an
environment set appropriately to raise all the warnings throughout the
build; e.g. env WARNS=6 NO_WERROR=yes buildworld.
Not currently touching the numerous instances in ^/tools.
MFC after: 1 week
This also fixes a minor issue that was missed in the initial review; the
layout of the MFD_HUGE_* flags is actually not 1:1 bit:flag -- it instead
borrowed the Linux convention of how this is laid out since it was
originally implemented on Linux, the top 6 bits represent the shift required
for the requested page size.
This allows us to remove the flag <-> pgsize mapping table and simplify the
logic just prior to validation of the requested page size.
While we're here, fix two small nits:
- HUGETLB memfd shouldn't exhibit the SHM_GROW_ON_WRITE behavior. We can
only grow largepage shm by appropriately aligned (i.e. requested pagesize)
sizes, so it can't work in the typical/sane fashion. Furthermore, Linux
does the same, so let's be compatible.
- We don't allow MFD_HUGETLB without specifying a pagesize, so no need to
check for that later.
Reviewed by: kib (slightly earlier version)
Literally returning EINVAL from a function designed to return an fd makes
for interesting scenarios.
I cannot assign enough pointy hats to cover this one.
r365524 did accidentally invert this check that sets SHM_LARGEPAGE, leading
non-hugetlb memfd as unconfigured largepage shm and thus test failures when
we try to ftruncate or write to them.
PR: 249236
Discussed with: kib
Found this while trying to get macOS bootstrap to work again after OpenZFS merge.
Reviewed By: #zfs, freqlabs
Differential Revision: https://reviews.freebsd.org/D26192
largepage shm objects.
And since we can, add memfd_create(MFD_HUGETLB) support, hopefully
close enough to the Linux feature.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D24652
for clang, as it uses clang specific builtins, and does not compile
correctly with gcc. Note that gcc packages usually come with their own
libatomic, providing these primitives.
PR: 230888
MFC after: 3 days
X-MFC-With: r364753
getlogin_r is specified by POSIX to to take a size_t len, not int. Fix our
version to do the same, bump the symbol version due to ABI change and
provide compat.
This was reported to break compilation of Ruby 2.8.
Some discussion about the necessity of the ABI compat did take place in the
review. While many 64-bit platforms would likely be passing it in a 64-bit
register and zero-extended and thus, not notice ABI breakage, some do
sign-extend (e.g. mips).
PR: 247102
Submitted by: Bertram Scharpf <software@bertram-scharpf.de> (original)
Submitted by: cem (ABI compat)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26335
This is being addressed as part of a side-patch I'm working on that builds
all the things with WARNS=6, instead of relying on it being supplied in just
shallow parts of the build with higher-level Makefile.inc.
Provide a prototype for mod_main and annotate the thread function argument
as unused.
MFC after: 1 week
In a side-change that I'm working on to start defaulting src builds to
WARNS=6 where WARNS isn't otherwise specified, GCC6 (and clang, to a lesser
extent) pointed out a number of issues with the resolv tests:
- Global method variable that gets shadowed in run_tests()
- Signed/unsigned comparison between i in run_tests() and hosts->sl_cur
The shadowed variable looks like it might actually be bogus as written, as
we pass it to RUN_TESTS -> run_tests, but other parts use the global method
instead. This change is mainly geared towards correcting that by removing
the global and plumbing the method through from run_tests -> run into the
new thread.
For the signed/unsigned comparison, there's no compelling reason to not just
switch i/nthreads/nhosts to size_t.
The review also included a change to the load() function that was better
addressed by jhb in r365302.
Reviewed by: ngie, pstef
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D24844
Implement the remaining pieces needed to allow userland timestamp reading.
Rewritten based on an intial essay into the problem by Justin Hibbits.
(Copyright changed to my own on his request.)
Tested on ppc64 (POWER9 Talos II), powerpcspe (e500v2 RB800), and
powerpc (g4 PowerBook).
Reviewed by: jhibbits (in irc)
Sponsored by: Tag1 Consulting, Inc.
Differential Revision: https://reviews.freebsd.org/D26347
MK_MALLOC_PRODUCTION option on -CURRENT.
Also, for the sake of backwards compatibility, support the old way of
enabling 'production malloc', e.g. by adding a define in make.conf(5).
MFC after: 1 week
X-MFC-With: r365371
For historical reasons, defining MALLOC_PRODUCTION in /etc/make.conf has
been used to turn off potentially expensive debug checks and statistics
gathering in the implementation of malloc(3).
It seems more consistent to turn this into a regular src.conf(5) option,
e.g. WITH_MALLOC_PRODUCTION / WITHOUT_MALLOC_PRODUCTION. This can then
be toggled similar to any other source build option, and turned on or
off by default for e.g. stable branches.
Reviewed by: imp, #manpages
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26337
- Use getline() instead of fgetln(). This ensures the returned string
is always null-terminated without losing the last character if the
last line in a file doesn't have a newline. Also, while fgetln says
the returned buffer can be modified, that doesn't actually seem safe
as the current implementation means you are modifying stdio's
internal buffer.
- Remove a spurious if before an ATF_REQUIRE that was clearly supposed
to be non-optional.
- Remove a pointless compare of 'ptr' against '\0' (really NULL) that
duplicated the middle condition in the for().
- Once a comment is found, skip the rest of the line, not just the
current word.
Reviewed by: kevans
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D26278
variable name instead of LIBUCL (which would otherwise end up with the
staging directory used instead of the wanted source directory.)
Reviewed by: sjg
Obtained from: Juniper Networks, Inc.
ld.bfd in particular requires -lm to come after libifconfig on the
command line when linking rescue.
Reviewed by: freqlabs, adrian
Differential Revision: https://reviews.freebsd.org/D26258
CheriABI is pickier about the arguments to open(2) and crashes with a
fault if a mode isn't passed to an open() when O_CREATE is specified.
Reported by: CHERI
Reviewed by: brooks
Obtained from: CheriBSD
MFC after: 2 weeks
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D26281
The size of the object at 'addr' is unknown and might be smaller than
the size of a pointer (e.g. some x86 instructions are smaller than a
pointer). Instead, just check that the address is in the bounds of
the program header.
Reported by: CHERI (indirectly)
Reviewed by: kib, brooks
Obtained from: CheriBSD
MFC after: 1 week
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D26279
Previously this was counting the amount of spare room at the start of
the buffer that the string needed to move forward and passing that as
the number of bytes to copy to memmove rather than the length of the
string to be copied.
In the strfmon test in the test suite this caused the memmove to
overflow the allocated buffer by one byte which CHERI caught.
Reported by: CHERI
Reviewed by: kevans
Obtained from: CheriBSD
MFC after: 1 week
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D26280
Currently we use a single bit to indicate whether the virtual page is
part of a superpage. To support a forthcoming implementation of
non-transparent 1GB superpages, it is useful to provide more detailed
information about large page sizes.
The change converts MINCORE_SUPER into a mask for MINCORE_PSIND(psind)
values, indicating a mapping of size psind, where psind is an index into
the pagesizes array returned by getpagesizes(3), which in turn comes
from the hw.pagesizes sysctl. MINCORE_PSIND(1) is equal to the old
value of MINCORE_SUPER.
For now, two bits are used to record the page size, permitting values
of MAXPAGESIZES up to 4.
Reviewed by: alc, kib
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D26238
Use explicit typedefs for block thunk structures as in r264143.
Reviewed by: kib, adrian
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26256
This changeset introduces the new libnetmap library for writing
netmap applications.
Before libnetmap, applications could either use the kernel API
directly (e.g. NIOCREGIF/NIOCCTRL) or the simple header-only-library
netmap_user.h (e.g. nm_open(), nm_close(), nm_mmap() etc.)
The new library offers more functionalities than netmap_user.h:
- Support for complex netmap options, such as external memory
allocators or per-buffer offsets. This opens the way to future
extensions.
- More flexibility in the netmap port bind options, such as
non-numeric names for pipes, or the ability to specify the netmap
allocator that must be used for a given port.
- Automatic tracking of the netmap memory regions in use across the
open ports.
At the moment there is no man page, but the libnetmap.h header file
has in-depth documentation.
Reviewed by: hrs
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D26171
Coverity flagged the scaling by sizeof(uzd). That is the type
of the pointer, so the scaling was already done by pointer arithmetic.
However, this was also passing a stack frame pointer to kvm_read,
so it was doubly wrong.
Move ZDOM_GET into the !_KERNEL section and use it in libmemstat.
Reported by: Coverity
Reviewed by: markj
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D26213
In parallel builds, this should allow sqlite to start building earlier and
increase parallelism when building lib/. Looking at htop output during
buildworld/tinderbox, there are long phases where only one CPU is active
optimizing the massive sqlite3.c file since the build of libsqlite3 is
started quite late.
Reviewed By: emaste
Differential Revision: https://reviews.freebsd.org/D26169
performs are protected by an exclusive lock, even for statically linked
programs, it is safe to re-enable libunwind's FrameHeaderCache, which I
temporarily disabled in r364263.
Meanwhile upstream has also used the _LIBUNWIND_USE_FRAME_HEADER_CACHE
for this purpose, so the only thing needed is to add this as a
compile-time command line flag.
While here, reformat the CFLAGS lines a little bit.
MFC after: 6 weeks
X-MFC-With: r364284, r364423
warnings anymore for compiler-rt's atomic.c. This occurred because the
IS_LOCK_FREE_8 macro was not correctly defined to 0 for mips, and this
caused the compiler to emit a runtime call to __atomic_is_lock_free(),
and that triggers the warning.
MFC after: 2 weeks
X-MFC-With: r364753
sys/ccompile.h no longer uses #pragma ident, so we no longer need to worry
about unknown pragmas.
I fixed one WARNS issue in r363409 by annotating be_is_auto_snapshot_name's
lbh parameter __unused, then upstreamed the following changes to OpenZFS
that rode in with the merge:
- zfs_path_to_zhandle now takes a const char *path rather than a char *path,
since it won't be mutating the string it receives and I had no reason to
believe it will need to in the future. [OpenZFS PR #10605]
- Annotated some unused parameters on definitions inlined into headers as
such. [OpenZFS PR #10606]
We need to define the LUA_FLOAT_INT64 macro even if we don't use it (copied
from stand/luaconf.h). While touching luaconf.h.dist also sync it with the
the 5.3.5 release version (matches the one in lib/liblua).
Reviewed By: kevans
Differential Revision: https://reviews.freebsd.org/D25977
In most cases this simply builds the file from lib/libc for missing
functions (e.g. strlcpy on Linux etc.). In cases where this is not possible
I've added an implementation to tools/build/cross-build.
The fgetln.c/fgetwln.c/closefrom.c compatibility code was obtained from
https://gitlab.freedesktop.org/libbsd/libbsd, but I'm not sure it makes
sense to import it into to contrib just for these three bootstrap files.
Reviewed By: brooks
Differential Revision: https://reviews.freebsd.org/D25978
There have been several mentions on our mailing lists about missing
atomic functions in our system libraries (e.g. __atomic_load_8 and
friends), and recently I saw __bswapdi2 and __bswapsi2 mentioned too.
To address this, add implementations for the functions from compiler-rt
to the system compiler support libraries, e.g. libcompiler_rt.a and and
libgcc_s.so.
This also needs a small fixup in compiler-rt's atomic.c, to ensure that
32-bit mips can build correctly.
Bump __FreeBSD_version to make it easier for port maintainers to detect
when these functions were added.
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D26159
The primary benefit is maintaining a completely shared
code base with the community allowing FreeBSD to receive
new features sooner and with less effort.
I would advise against doing 'zpool upgrade'
or creating indispensable pools using new
features until this change has had a month+
to soak.
Work on merging FreeBSD support in to what was
at the time "ZFS on Linux" began in August 2018.
I first publicly proposed transitioning FreeBSD
to (new) OpenZFS on December 18th, 2018. FreeBSD
support in OpenZFS was finally completed in December
2019. A CFT for downstreaming OpenZFS support in
to FreeBSD was first issued on July 8th. All issues
that were reported have been addressed or, for
a couple of less critical matters there are
pull requests in progress with OpenZFS. iXsystems
has tested and dogfooded extensively internally.
The TrueNAS 12 release is based on OpenZFS with
some additional features that have not yet made
it upstream.
Improvements include:
project quotas, encrypted datasets,
allocation classes, vectorized raidz,
vectorized checksums, various command line
improvements, zstd compression.
Thanks to those who have helped along the way:
Ryan Moeller, Allan Jude, Zack Welch, and many
others.
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D25872
This is a change in preparation for stopping to use lorder.sh (D26044) and
instead assume that we have a linker newer than ~1990. Without lorder.sh
duplicates end up being passed to the linker when building .so files and this
can result in duplicate symbol definition errors.
There is one minor change: libcompiler_rt.a will no longer provide
gcc_personality_v0 and instead we now only have it in libgcc_eh.a/libgcc_s.so.
This matches GCC's behaviour.
Reviewed By: emaste, cem
Differential Revision: https://reviews.freebsd.org/D26042
Should unbreak gcc build as reported by tinderbox:
lib/libc/gen/scandir.c:59:12: warning: 'alphasort_thunk' declared 'static' but never defined [-Wunused-function]
part of std::random_shuffle. These were split off at some point by
upstream, but I forgot to add them to our Makefile.
This should allow some ports which use std::random_shuffle to correctly
link again.
Reported by: thierry
PR: 248795
MFC after: 6 weeks
X-MFX-With: r364284
When files are read from .rc or .4th, verify_file is asked to
guess the severity (VE_TRY,VE_WANT,VE_MUST)
Reviewed by: stevek
MFC after: 1 week
Sponsored by: Juniper Networks
I have no idea what this does (and until now that it even existed), but
apparently it needs this entry changed for the MSG_TLSAPPDATA, since
it is kernel only.
Linking the full version of clang 11 results in errors similar to:
lld: error: /usr/src/contrib/llvm-project/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp:736:(.text._ZN5clang4ento22CreateAnalysisConsumerERNS_16CompilerInstanceE+0xE0): relocation R_MIPS_CALL16 out of range: 48920 is not in [-32768, 32767]; references operator new(unsigned long)
Add -mxgot to the compilation flags for llvm libraries to work around
this error. This may be too big of a hammer, but it can always be
refined later.
MFC after: 6 weeks
Introduce G_PART_ALIAS_SOLARIS_RESERVED, GPT_ENT_TYPE_SOLARIS_RESERVED et al.,
to make gpart show output more convenient on systems with illumos/openindiana
disks visible.
Submitted by: Juraj Lutter <otis AT sk.FreeBSD.org>
Reviewed by: bcr(manpages), delphij, myself
Differential Revision: https://reviews.freebsd.org/D26012
The standard uses 80+80 and 80p80 but nowhere 80_80.
Switch the latter to 80P80 for all the macros and comments refering
to #defined flags which I could find.
The only place we leave as 80p80 is the ifconfig command line arguments
as we spell them all in lower case.
Ideally we would use 80+80 for any interactions with the user and
80P80 for anything internal but let us not confuse parsers and
hence avoid the '+' in either case.
Reviewed by: adrian, gnn
MFC after: 2 weeks
Sponsored by: Rubicon Communications, LLC (d/b/a "Netgate")
Differential Revision: https://reviews.freebsd.org/D26001
flua does have some specific bits that will include luaconf.h, but the
definition of LUA_USE_DLOPEN for those won't matter. This belongs in liblua
instead.
To expand on my previous commit, which was a little sparse with details,
it's not really safe to allow LUA_USE_DLOPEN with host lib paths being used.
The host system could have an entirely different lua version and this could
cause us to crash and burn.
If we want to revive this later, we need to make sure to define c module
paths inside OBJDIR that are compiled against whatever version we've
bootstrapped.
Pointy hat: kevans
RFC5424 defines NILVALUE as '-'. Replace its usage with a macro and
separate out the fields to be more clear. fputs(3) is used in some
places to avoid hiding possible format string problems in a macro.
Reviewed by: cem, vangyzen (earlier version)
Sponsored by: Dell EMC
Use /usr not /usr/local for base system components.
Use /usr/lib/flua and /usr/share/flua (not lua) for consistency and to
avoid the possibility that other software accidentally finds our base
system modules.
Also drop the version from the path, as flua represents an unspecified
lua version that corresponds to the FreeBSD version it comes with.
LUA_USE_DLOPEN is not yet enabled because some additional changes are
needed wrt symbol visibility.
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24605
This adds support for the Cortex-A76 and Neoverse-N1 PMU counters to pmc.
While here add more PMCR_IDCODE values and check the implementers code is
correct before setting the PMU type.
Reviewed by: bz, emaste (looks reasonable to me)
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D25959
Apparently it was not exported, because scandir_b.c was not included
into libc SRCS. Export it with the CURRENT-13 version.
Also, because it was not exported before ino64, clean up
scandir-compat11.c.
PR: 248572
Reported by: Alex S <iwtcex@gmail.com>
Reviewed by: emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D26020
libifconfig_sfp.h provides an API in libifconfig for querying SFP module
properties, operational status, and vendor strings, as well as descriptions
of the various fields, string conversions, and other useful helpers for
implementing user interfaces.
SFP module status is obtained by reading registers via an I2C interface.
Descriptions of these registers and the values therein have been collected
in a Lua table which is used to generate all the boilerplace C headers and
source files for accessing these values, their names, and descriptions.
The generated code is fully commented and readable.
This is the first use of libifconfig in ifconfig itself. For now, the
scope remains very limited. Over time, more of ifconfig will be replaced
with libifconfig.
Some minor changes to the formatting of ifconfig output have been made:
- Module memory hex dumps are indented one extra space as a result of using
hexdump(3) instead of a bespoke hex dump function.
- Media descriptions have an added two-character short-name in parenthesis.
- QSFP modules were incorrectly displaying TX bias current as power. Now
TX channels display bias current, and this change has been made for both
SFP and QSFP modules for consistency.
A Lua binding for libifconfig including this functionality is implemented
but has not been included in this commit. The plan is for it to be
committed after dynamic module loading has been enabled in flua.
Reviewed by: kp, melifaro
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D25494
required by both the static analyzer (MK_CLANG_FULL) and clang-format
(MK_CLANG_FORMAT). We could also invent yet another SRCS variant, but
that seems a bit overkill.
lib/libpam/modules/pam_exec/pam_exec.c:222:56: error: format specifies type 'char *' but the argument has type 'const void *' [-Werror,-Wformat]
if (asprintf(&envstr, "%s=%s", pam_item_env[i].name, item) < 0)
~~ ^~~~
On ELFv2, the overflow parameters in the stack frame are at a different offset
from sp than ELFv1. Adjust code to use the correct offset in all cases.
This had resulted in argv[8] and up being copied to the incorrect address
in the new context's initial stack frame.
This is not necessarily the only bug in this function, I need to do a full
review still and ensure the rest of the math is sane for ELFv2 stack frames.
Reported by: pherde (Probably. My notes are a bit unclear.)
Reviewed by: jhibbits (in irc)
Sponsored by: Tag1 Consulting, Inc.
The -I option (and hotkey) is reused for this. Skipping symbol resolution is
moved to the new -A option (and hotkey).
While arguably this violates POLA I think it's a change for the better.
ALso note the -I option was added in head.
Differential Revision: https://reviews.freebsd.org/D21658
Refactor to create devinfo_free_dev(). Call it to plug a memory leak
on two error paths in devinfo_init_devices().
Reported by: Coverity
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Unlike lld, ld.bfd doesn't infer the emulation from the first object
file, but assumes its compiled in default for ld -r.
Differential Revision: https://reviews.freebsd.org/D25728
In lib/Makefile, we document the dependency with SUBDIR_DEPEND
For buildworld orchestration, just prebuild libregex if GOOGLETEST is
enabled. googletest will get built in a later pass.
gtest tests want to use \w ([[:alnum:]]) at the very least, which was
causing them to fail after r363679.
Start linking against libregex so that this shorthand is implemented.
PR: 248452
The entire patch-set is not yet mature enough for commit, but this usable
subset is generally enough for googletest to be happy with and mostly map to
some existing concepts, so they're not as invasive.
The specific changes included here are:
- Branching in BREs with \|
- \w and \W for [[:alnum:]] and [^[:alnum:]] respectively
- \s and \S for [[:space:]] and [^[:space:]] respectively
- Additional quantifiers in BREs, \? and \+ (self-explanatory)
There's some #ifdef'd out work for allowing empty branches as a match-all.
This is a feature that's under assessment... future work will determine
how standard this behavior is and act accordingly.
The constant seems to exists on MacOS X >= 10.8.
Requested by: swills
Reviewed by: allanjude, kevans
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D25933
We bootstrap this file to allow compiling FreeBSD on Linux systems since
some boostrap tools use setmode(). Unfortunately, glibc's sys/stat.h
declares a non-static getumask() function (which is unimplemented!) and
that conflicts with the local getumask() function. To work around this
simply use a different name here.
Reviewed By: brooks, emaste
Differential Revision: https://reviews.freebsd.org/D25929
GCC's cpp was exiting immediately when it failed to find requested
includes (<ncurses_cfg.h> and <ncurses_defs.h>). clang-cpp emitted an
error for the missing header files but continued processing the file
(thus not honoring any macros defined in the missing headers).
Arguably, the awk script is buggy since it doesn't check the return
value of the command it executes.
Reviewed by: kevans
Differential Revision: https://reviews.freebsd.org/D25731
RISC-V doesn't support floating-point exceptions.
RISC-V Instruction Set Manual: Volume I: User-Level ISA, 11.2 Floating-Point
Control and Status Register: "As allowed by the standard, we do not support
traps on floating-point exceptions in the base ISA, but instead require
explicit checks of the flags in software. We considered adding branches
controlled directly by the contents of the floating-point accrued exception
flags, but ultimately chose to omit these instructions to keep the ISA simple."
We still need these functions, because some applications (notably Perl) call
them, but we cannot provide a meaningful implementation.
Sponsored by: Axiado
Differential Revision: https://reviews.freebsd.org/D25740
In IEEE 1003.1-2008 [1] and earlier revisions, BRE/ERE grammar allows for
any character to be escaped, but "ORD_CHAR preceded by an unescaped
<backslash> character [gives undefined results]".
Historically, we've interpreted an escaped ordinary character as the
ordinary character itself. This becomes problematic when some extensions
give special meanings to an otherwise ordinary character
(e.g. GNU's \b, \s, \w), meaning we may have two different valid
interpretations of the same sequence.
To make this easier to deal with and given that the standard calls this
undefined, we should throw an error (EESCAPE) if we run into this scenario
to ease transition into a state where some escaped ordinaries are blessed
with a special meaning -- it will either error out or have extended
behavior, rather than have two entirely different versions of undefined
behavior that leave the consumer of regex(3) guessing as to what behavior
will be used or leaving them with false impressions.
This change bumps the symbol version of regcomp to FBSD_1.6 and provides the
old escape semantics for legacy applications, just in case one has an older
application that would immediately turn into a pumpkin because of an
extraneous escape that's embedded or otherwise critical to its operation.
This is the final piece needed before enhancing libregex with GNU extensions
and flipping the switch on bsdgrep.
[1] http://pubs.opengroup.org/onlinepubs/9699919799.2016edition/
PR: 229925 (exp-run, courtesy of antoine)
Differential Revision: https://reviews.freebsd.org/D10510
Use the existing PMC_CPUID_LEN to size pmc_cpuid in the kernel and various
buffers for reading it in libpmc. This avoids some extra syscalls and
malloc/frees.
While in here, use strlcpy to copy a user-provided cpuid string instead of
memcpy, to make sure we terminate the buffer.
Reviewed by: mav
MFC after: 1 week
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D25679
It is apparently broken when assembled by contemporary GNU as as well as
Clang IAS (which is used in the default configuration).
PR: 248221
Reported by: pizzamig
Sponsored by: The FreeBSD Foundation
lbh is included for consistency with other functions and in case
future work needs to use it, but it is currently unused. Mark it,
and a post-OpenZFS-import world will be able to raise WARNS of
libbe to the default (pending some minor changes to openzfs libzfs).
MFC after: 3 days
10.0.1 final (aka llvmorg-10.0.1-0-gef32c611aa2).
There were no changes since rc2, except in the upstream regression
tests, which we do not ship.
Relnotes: yes
MFC after: immediately (no material changes except tag)
Split the ELF feature note into a separate file that is linked into
*crt1.o the same as crtbrand.S was before. crtbrand.o is now linked
into crti.o on all platforms in addition to *crt1.o.
Reviewed by: kib
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D25304
This is neither POSIX compliant nor what the implementation does.
This could be allowed by changing the value of TCSAFLUSH from 2 to 3,
but that doesn't seem worthwhile after 25+ years.
Reviewed by: imp
MFC after: 1 week
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D25659
Generate libpmc_events.c in a temporary file first and only overwrite it
if the files are actually different.
This avoids compiling and relinking the different variants of libpmc on
every incremental build.
Reviewed By: jhb
Differential Revision: https://reviews.freebsd.org/D24784
It follows the equivalent Linux change to be able to differentiate
skylakex and cascadelakex, sharing the same model but not stepping.
This fixes skylakex handling broken by r363144.
MFC after: 6 days
In certain situations lseek(2) will return successful although if no seek
was performed. This can happen when operating on devices that don't support
seeking (older tape drives) or when operating on changeable media devices
(such as DVD or Blu-ray devices) without a medium inserted.
Document this within the man page and update the POSIX compliance while here.
PR: 162765
Submitted by: arundel@
Reported by: arundel@
Reviewed by: bcr (mentor)
Approved by: bcr (mentor)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25646
Some older references called it 'arg'
Also fix a syntax error that was underlining an entire sentence.
PR: 247386
Reported by: Paul Floyd <paulf@free.fr>, PauAmma (research)
MFC after: 2 weeks
Sponsored by: Klara Inc.
memfd_create fds will no longer require an ftruncate(2) to set the size;
they'll grow (to the extent that it's possible) upon write(2)-like syscalls.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D25502
While this behaviour is harmless, it is really just an artifact of the
fact that the msgctl(2) implementation uses a user-visible structure as
part of the internal implementation, so it is not deliberate and these
pointers are not useful to userspace. Thus, NULL them out before
copying out, and remove references to them from the manual page.
Reported by: Jeffball <jeffball@grimm-co.com>
Reviewed by: emaste, kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25600
This test checks if value received from kvm_read is sane, based on
value returned by sysctl interface.
This should catch regression on bug fixed by r359160
Reviewed by: jhb
Approved by: jhibbits (mentor)
MFC after: 1 week
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D23783
This was a copy-paste bug in r362902. While here, switch to using
${.TARGET}.
Reported by: Kjell Tore Ullavik <ktullavik@gmail.com>
Reviewed by: kib
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D25585
- Add a missing Pp [1]
- Remove uses of Tn
- Use "Xr open 2" when appropriate
PR: 247783 [1]
Submitted by: PauAmma <pauamma@gundo.com> [1]
MFC after: 3 days
The new function operates similarly to ifconfig_lagg_get_lagg_status and
likewise is accompanied by a function to free the bridge status data structure.
I have included in this patch the relocation of some strings describing STP
parameters and the PV2ID macro from ifconfig into net/if_bridgevar.h as they
are useful for consumers of libifconfig.
Reviewed by: kp, melifaro, mmacy
Approved by: mmacy (mentor)
MFC after: 1 week
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D25460
When the RISC-V port was initially committed to FreeBSD, GCC would
generate 64-bit long doubles, and the definitions in _fpmath.h reflected
that. This was changed to 128-bit in GCC later that year [1], but the
definitions were never updated, despite the documented workaround. This
causes printf(3) and friends to interpret only the low 64-bits of a long
double in ldtoa, thereby printing incorrect values.
Update the definitions now that both clang and GCC generate 128-bit long
doubles.
[1] 54b21fc5ae
PR: 242067
Reported by: Dennis Clarke <dclarke@blastwave.org>
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25420
This was added in r293648 to pass -mlong-calls for crt1.o and gcrt1.o.
The use of -mlong-calls was removed in r358851 for LLVM 10.0, leaving
STATIC_CFLAGS empty.
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D25305
llvmorg-10.0.1-rc2-0-g77d76b71d7d.
Also add a few more llvm utilities under WITH_CLANG_EXTRAS:
* llvm-dwp, a utility for merging DWARF 5 Split DWARF .dwo files into
.dwp (DWARF package files)
* llvm-size, a size(1) replacement
* llvm-strings, a strings(1) replacement
MFC after: 3 weeks
Posix says that the interpretation of the locale string is
"implementation-defined", so we ought to document what is
actually recognized.
Also add a cross reference to locale(1).
PR: 247553
MFC after: 1 week
CAP_EVENT was omitted on pidfiles (in
pidfile_open()). There seems no reason why a process that creates
and writes a pidfile cannot monitor events on that file. This mod adds
the capability.
Reviewed by: cem@
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D25363
It seems this manpage was copied from kvm_getloadavg(3), but the
DIAGNOSTICS section was not updated completely. Update the section with
correct information about a return value of -1.
MFC after: 3 days
clang-format is enabled conditional on either WITH_CLANG_EXTRAS or
WITH_CLANG_FORMAT. Some sources in libclang are build conditional on
either rule, and obviously the clang-format binary itself depends on the
rule.
clang-format could still use a manual page.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D25427
Some of the NetBSD contributed tests are gated behind the
__HAVE_LONG_DOUBLE flag. This flag seems to be defined only for
platforms whose long double is larger than their double. I could not
find this explicitly documented anywhere, but it is implied by the
definitions in NetBSD's sys/arch/${arch}/include/math.h headers, and the
following assertion from the UBSAN code:
#ifdef __HAVE_LONG_DOUBLE
long double LD;
ASSERT(sizeof(LD) > sizeof(uint64_t));
#endif
RISC-V has 128-bit long doubles, so enable the tests on this platform,
and update the comments to better explain the purpose of this flag.
Reviewed by: ngie
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25419
OpenZFS generates events with a "zio_timestamp" field, which gets mistaken for
"timestamp" by libdevdctl due to imprecise string matching. Then later it is
assumed a "timestamp" field exists when it doesn't and an exception is thrown.
Add a space to the search string so we match exactly "timestamp" rather than
anything with that as a suffix.
Approved by: mav (mentor)
MFC after: 3 days
Sponsored by: iXsystems, Inc.
is used by the IPPROTO_SCTP level socket options SCTP_GET_PEER_ADDRESSES
and SCTP_GET_LOCAL_ADDRESSES, which are used by libc to implement
sctp_getladdrs() and sctp_getpaddrs().
These changes allow an old libc to work on a newer kernel.
