PR/58896: Martin Husemann: Demonstrate that a PT_STOPed process could not be
PT_KILLed.

t_setrlimit: Narrow the scope of stack-protector warning suppression.

t_setrlimit uses alloca now

introduce new GCC 12 warning disables and use them in a few places

this introduces 4 new warning disable flags:

CC_WNO_MISSING_TEMPLATE_KEYWORD
CC_WNO_REGISTER
CC_WNO_STRINGOP_OVERREAD

introduce new GCC 12 warning disables and use them in a few places

this introduces 4 new warning disable flags:

CC_WNO_MISSING_TEMPLATE_KEYWORD
CC_WNO_REGISTER
CC_WNO_STRINGOP_OVERREAD
CC_WNO_ARRAY_BOUNDS

and documents them in README.warnings. of these, the string op
and array bounds are both problematic (real bugs) and also spurious
(not real bugs), and the other 2 are mostly temporary for older
3rd party code.

add some new uses of CC_WNO_STRINGOP_OVERFLOW.

fix m68k build for gallium and GCC 12.

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bsd.own.mk: rename to CC_WNO_ADDRESS_OF_PACKED_MEMBER

Provide a single variable
CC_WNO_ADDRESS_OF_PACKED_MEMBER
with options for both clang and gcc, to replace
CLANG_NO_ADDR_OF_PACKED_MEMBER
CC_N

bsd.own.mk: rename to CC_WNO_ADDRESS_OF_PACKED_MEMBER

Provide a single variable
CC_WNO_ADDRESS_OF_PACKED_MEMBER
with options for both clang and gcc, to replace
CLANG_NO_ADDR_OF_PACKED_MEMBER
CC_NO_ADDR_OF_PACKED_MEMBER
GCC_NO_ADDR_OF_PACKED_MEMBER

Using the convention CC_compilerflag, where compilerflag
is based on the full compiler flag name.

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Provide _GNU_SOURCE for t_clone now that is required to make clone()
visible.

Add a regression test for PR kern/52239, "Changing protections of
already mmap'ed region can fail", based on the test program in the PR.

Test lib/libc/sys/t_timerfd often fails when run on QEMU because
QEMU misses clock interrupts.

Always check values against [ lower, upper ] bounds and use "4 * upper"
when run under QEMU.

Now becom

Test lib/libc/sys/t_timerfd often fails when run on QEMU because
QEMU misses clock interrupts.

Always check values against [ lower, upper ] bounds and use "4 * upper"
when run under QEMU.

Now becomes part of PR kern/43997 "Kernel timer discrepancies".

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Add native implementations of eventfd(2) and timerfd(2), compatible with
the Linux interfaces of the same name.

add support for new GCC 9 warnings that may be too much to fix
right now. new address-of-packed-member and format-overflow
warnings have new GCC_NO_ADDR_OF_PACKED_MEMBER amd
GCC_NO_FORMAT_OVERFLOW v

add support for new GCC 9 warnings that may be too much to fix
right now. new address-of-packed-member and format-overflow
warnings have new GCC_NO_ADDR_OF_PACKED_MEMBER amd
GCC_NO_FORMAT_OVERFLOW variables to remove these warnings.

apply to a bunch of the tree. mostly, these are real bugs that
should be fixed, but in many cases, only by removing the 'packed'
attribute from some structure that doesn't really need it. (i
looked at many different ones, and while perhaps 60-80% were
already properly aligned, it wasn't clear to me that the uses
were always coming from sane data vs network alignment, so it
doesn't seem safe to remove packed without careful research for
each affect struct.) clang already warned (and was not erroring)
for many of these cases, but gcc picked up dozens more.

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New system call getrandom() compatible with Linux and others.

Three ways to call:

getrandom(p, n, 0) Blocks at boot until full entropy.
Returns up to n

New system call getrandom() compatible with Linux and others.

Three ways to call:

getrandom(p, n, 0) Blocks at boot until full entropy.
Returns up to n bytes at p; guarantees
up to 256 bytes even if interrupted
after blocking. getrandom(0,0,0)
serves as an entropy barrier: return
only after system has full entropy.

getrandom(p, n, GRND_INSECURE) Never blocks. Guarantees up to 256
bytes even if interrupted. Equivalent
to /dev/urandom. Safe only after
successful getrandom(...,0),
getrandom(...,GRND_RANDOM), or read
from /dev/random.

getrandom(p, n, GRND_RANDOM) May block at any time. Returns up to n
bytes at p, but no guarantees about how
many -- may return as short as 1 byte.
Equivalent to /dev/random. Legacy.
Provided only for source compatibility
with Linux.

Can also use flags|GRND_NONBLOCK to fail with EWOULDBLOCK/EAGAIN
without producing any output instead of blocking.

- The combination GRND_INSECURE|GRND_NONBLOCK is the same as
GRND_INSECURE, since GRND_INSECURE never blocks anyway.

- The combinations GRND_INSECURE|GRND_RANDOM and
GRND_INSECURE|GRND_RANDOM|GRND_NONBLOCK are nonsensical and fail
with EINVAL.

As proposed on tech-userlevel, tech-crypto, tech-security, and
tech-kern, and subsequently adopted by core (minus the getentropy part
of the proposal, because other operating systems and participants in
the discussion couldn't come to an agreement about getentropy and
blocking semantics):

https://mail-index.netbsd.org/tech-userlevel/2020/05/02/msg012333.html

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Add ppoll() a compatibility wrapper around pollts(2)

Submitted by Apurva Nandan.

Fix build for vax; Compile t_ptrace_sigchld.c with -D__TEST_FENV.

Add a test for sigaltstack(2) and SA_ONSTACK

Add a NetBSD native futex implementation, mostly written by riastradh@.
Map the COMPAT_LINUX futex calls to the native ones.

PR/55177: Carlo Arenas: mremap(MAP_REMAPDUP) fails after fork()

Add new ptrace(2) test file

t_ptrace_sigchld - for SIGCHLD handler + ptrace(2).

Right now a single test is enabled (raise(SIGKILL)) and marked as failed
as it never finishes as the child is never c

Add new ptrace(2) test file

t_ptrace_sigchld - for SIGCHLD handler + ptrace(2).

Right now a single test is enabled (raise(SIGKILL)) and marked as failed
as it never finishes as the child is never collected before exiting the
parent uninterested about its child (SA_NOCLDWAIT).

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fix variable name

Centralize the base rump libraries into a variable used by all the other
Makefiles so that we can make changes to it centrally as needed and have
less mess. Fixes the sun2 build that needs rumpvfs af

Centralize the base rump libraries into a variable used by all the other
Makefiles so that we can make changes to it centrally as needed and have
less mess. Fixes the sun2 build that needs rumpvfs after librump after
the latest changes.

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Disable t_ptrace_wait* tests for MKSANITIZER/MKLIBCSANITIZER

A subset of tests is not compatible with the sanitizers.

Add a test for verifying procinfo note inside coredumps.

Add a first test for triggering a core dump in the debugged process
(via PT_DUMPCORE) and verifying it. The test finds procinfo note
and che

Add a test for verifying procinfo note inside coredumps.

Add a first test for triggering a core dump in the debugged process
(via PT_DUMPCORE) and verifying it. The test finds procinfo note
and checks its contents.

The core dump is processed through libelf. However, it only provides
for finding all note segments (or sections?). I had to implement
finding and processing individual notes myself. I've added
a core_find_note() function that will be reused in future tests.

Reviewed by kamil.

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Use LDADD, which apparently puts the libraries at the end of the command,
and makes static builds (aka sun2) happier.

Introduce check for the support of FPU exceptions

If FPU exceptions are unsupported, skip the SIGFPE crash tests.

Reuse code from tests/kernel/h_segv.c

Link t_ptrace_wait* tests with -pthread

While there, bump (c) for ATF ptrace(2) tests.

Add __used in infinite_thread() for consistency with other functions in
the file.

more tests