COMPAT_NETBSD32: Add support for epoll(2).

COMPAT_NETBSD32: Catch up with sys___kevent100() addition.

XXX
Add epoll_* and memfd_create.

s/strucure/structure/ and s/structues/structures/ in comments.

Implement support for mounting UDF in compat32
Fixes PR#56801

Adapt to recent posix_spawn extensions.

COMPAT_NETBSD32 is all about running the 32-bit flavor of native
binaries on a 64-bit platform[*], as such:
- Make the logic about which "sendsig" flavor to call MI (as it is in the
native 64-bit environment) and follow the same rules as the native 32-bit
environment.
- Make COMPAT_NETBSD32 x COMPAT_16 work the same as it would in the
native 32-bit environment by providing a netbsd32_sendsig_sigcontext_16_hook,
rather than overriding the entire sendsig logic with a netbsd32_sendsig_hook.
- In netbsd32___sigaction_sigtramp(), make sure the compat_netbsd32_16
module is loaded if the trampoline version specifies a sigcontext style
handler, otherwise return EINVAL so that libc can try again with siginfo
style.

[*] ...except for arm32, which uses it to mean "run 32-bit OABI binaries
from the 32-bit EABI environment". Doing it this way was arguably a mistake,
but we are stuck with it for now, so support it by providing a machine-
dependent override for netbsd32_sendsig() that also disables the corresponding
logic in netbsd32___sigaction_sigtramp().

Fixes PR kern/56487.

The read/write/send/recv system calls return ssize_t because -1 is
returned on error. Therefore we must restrict the lengths of any
buffers to NETBSD32_SSIZE_MAX with compat32 to avoid garbage return
values.

Fixes ATF lib/libc/sys/t_write:write_err.

s/u_intN_t/uintN_t/

Handle FSSIOCSET and FSSIOCGET; vndconfig(8) works with compat32 now.
XXX: FSSIOCSET50 and FSSIOCGET50 are not (yet) handled.

Separate the compat_netbsd32_coredump from the compat_netbsd32 and
coredump modules, into its own module.

Welcome to 7.99.75 !!!

branches: 1.133.2;
Add ACL support for FFS. From FreeBSD.

Introduce PT_LWPSTATUS + PT_LWPNEXT, obsolete PT_LWPINFO

PT_LWPINFO is a legacy ptrace(2) operation that was originally intended
to retrieve the thread (LWP) information inside a traced process.

It has a number of flaws and is confused with PT_LWPINFO from FreeBSD.

PT_LWPSTATUS and PT_LWPNEXT address the problems (shortly by: rename,
removal of pl_event) and introduces new features: signal context
(pl_sigpend, pl_sigmask), LWP name (pl_name), LWP TLS base address
(pl_private). The private pointer was so far missing information for
a debugger.

PT_LWPSTATUS@nnn is now shipped with core(5) files and contain LWP specific
information, so far missed in the core(5) files.

PT_LWPSTATUS retrieves LWP information for the prompted thread.
PT_LWPNEXT retrieves LWP information for the next thread, borrowing the
semantics from NetBSD specific PT_LWPINFO.

PT_LWPINFO is namespaced with __LEGACY_PT_LWPINFO and still available for
the foreseeable future, without plans of removing it.

Add ATF tests for PT_LWPSTATUS + PT_LWPNEXT.

Keep ATF tests for PT_LWPINFO.

Switch GDB to new API.

Proposed on tech-kern@.

8-byte objects on i386 or arm-oabi are aligned in 4-byte boundary.
Therefore, we must use __attribute__((__aligned__(4))) for them.
netbsd32_{,u}int64 are provided for this purpose. However, we
cannot use it in <compat/sys/siginfo.h> due to circular dependency
b/w <machine/netbsd32_machdep.h>.

In order to distangle it, we choose here to have a duplicate type,
netbsd32_siginfo_uint64, in <compat/sys/siginfo.h>. The equivalence
with netbsd32_uint64 is asserted in <compat/netbsd32/netbsd32.h>.

Now, gdb for i386 works again on amd64 kernel.

Based on patch provided by kamil. Thanks!

XXX
pullup to netbsd-9

Sorry, revert unintentional parts of the previous commit:
http://mail-index.netbsd.org/source-changes/2019/11/18/msg110946.html

I was going to commit only netbsd32_signal.c.

Belatedly catch up with kern_sig.c rev 1.358:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/kern/kern_sig.c#rev1.358

Provide syscall information with SIGTRAP TRAP_SCE/TRAP_SCX so that
picotrace/truss, for example, works fine on COMPAT_NETBSD32.

With some minor changes:

- Centralize netbsd32_si{,32}_si{32,}() into netbsd32_ksi{,32}_ksi{32,}().
- Provide si_status with SIGCHLD.
- Remove the remaining of SA.

XXX
pullup to netbsd-9

For netbsd32_statvfs, f_spare should be netbsd32_uint64, not uint64_t.

Fix syscalls using struct statvfs on COMPAT_NETBSD32 on amd64, where
NETBSD32_INT64_ALIGN is __attribute__((__aligned__(4))).

Switch kevent udata from intptr_t void*

Synchromize the struct field format with other BSDs and Darwin.

No ABI change between older and newer struct form on the ports.

The change will require no changes to most C users during the transition
period as the header keeps a caller cast.

Discussed with core@ and there were no objections for this move.

accrightslen should be u_int for compat too

avoid signed-compare warning; use uintmax_t to print.

Add a new member to struct vfsstat and grow the unused members
The new member is caled f_mntfromlabel and it is the dkw_wname
of the corresponding wedge. This is now used by df -W to display
the mountpoint name as NAME=

branches: 1.123.4;
use KASSERTMSG() in netbsd32_ptr32i().

- expand the comment about what netbsd32_machdep.h should provide.
- add missing NETBSD32_POINTER_TYPE
- add static inline functions to convert pointers to/from 32 bit,
inclusing an overflow check for NETBSD32PTR32PLUS().

Merge the [pgoyette-compat] branch

Restore netbsd32 compat code for new NPF ABI.

support nullfs in netbsd32.

branches: 1.118.2;
add {send,recv}mmsg

redo the previous -- compat/sys/siginfo.h is already included
later, as is another header. move them up near the top.

branches: 1.116.2;
include <compat/sys/siginfo.h> for siginfo32_t.

handle siginfo requests for ptrace32

branches: 1.114.8;
tv_usec in netbsd32_timeval is suseconds_t (aka int32_t) rather than
netbsd32_long (considered harmless)

approved by martin

PR kern/51514: ptrace(2) fails for 32-bit process on 64-bit kernel

Updated from the original patch in the PR by me.

Trailing whitespace

Types for wait6 and clock_getcpuclockid2

deal with not having KTRACE

branches: 1.109.2;
We never exec(2) with a kernel vmspace, so do not test for that, but instead
KASSERT() that we don't.
When calculating the load address for the interpreter (e.g. ld.elf_so),
we need to take into account wether the exec'd process will run with
topdown memory or bottom up. We can not use the current vmspace's flags
to test for that, as this happens too early. Luckily the execpack already
knows what the new state will be later, so instead of testing the current
vmspace, pass the info as additional argument to struct emul
e_vm_default_addr.
Fix all such functions and adopt all callers.

move some header-specific pointer-typedefs into a header-specific area.

add netbsd32 support for nfssvc(2). we do this by defining 5 copyin/out
functions that do all the ugly work, are just plain copyin/out for the
native system calls, and do the necessary translations for netbsd32.

with this i'm able to run 32 bit nfsd and mountd on 64 bit kernel and
mount the file systems remotely.

s/sparc64/native 64 bit/ in a comment...

Implement trivial conversion for pset_*

Implement modctl, sigqueinfo and mq_*

branches: 1.103.2;
add tmpfs.

branches: 1.102.2;
Revert the following changes:

src/sys/sys/quotactl.h 1.37
src/sys/compat/netbsd32/netbsd32.h 1.101
src/sys/compat/netbsd32/netbsd32_netbsd.c 1.188, 1.189
src/sys/kern/vfs_quotactl.c 1.39
src/sys/kern/vfs_syscalls.c 1.483
src/sys/ufs/lfs/ulfs_quota.c 1.11
src/sys/ufs/ufs/ufs_quota.c 1.116
src/lib/libquota/quota_kernel.c 1.5

and do them correctly.

If you're going to change the name of something, you need to change
the name of *all* the things with the same name, not just a handful,
and you should change it to something similar so it still matches the
rest of the system rather than just picking an arbitrarily different
name.

Hi, Joerg.

To wit, rename the quotactl "delete" operation to "del", because
"delete" is a reserved word in C++ and for some reason Joerg wants to
run internal interfaces used only by C code through his C++ compiler.
Do not rename it to "remove" instead, because this doesn't match
libquota or the rest of the usage throughout the system; and rename
all the related identifiers, not just the ones that blew the mind of
Joerg's C++ compiler.

Because this is not a user-facing API (the only userland consumer
sys/quotactl.h is libquota) it is sort of ok to make arbitrary
source-incompatible changes; however, by the same token it's completely
unnecessary. If it *were* a user-facing API that someone might have a
semi-rational reason to want to run a C++ compiler on, it would be
incorrect to change it at this point.

delete -> remove

Do not use native off_t type under compat netbsd32, but a new
netbsd32_off_t that provide the expected alignment for 64bit types.

branches: 1.99.2;
Properly translate struct swapent for COMPAT_NETBSD32 (missing commit)

sigaction until 1.4 had an int sigmask, don't trash the stack.

Change the type of the 'cookie' that holds the state of the core dump file
from 'void *' to the actual type 'struct coredump_iostate *'.
In most of the code the contents of the structure are still unknown.
This just stops the wrong type of pointer being passed to the 'void *'
parameter.
I hope I've found everything, amd64 GENERIC and i386 GENERIC & ALL compile.

branches: 1.96.2;
fix pre-5 stat system call structure which should have used the pre-64-time_t
timestamps!

branches: 1.95.2;
Rework posix_spawn locking and memory management:
- always provide a vmspace for the new proc, initially borrowing from proc0
(this part fixes PR 46286)
- increase parallelism between parent and child if arguments allow this,
avoiding a potential deadlock on exec_lock
- add a new flag for userland to request old (lockstepped) behaviour for
better error reporting
- adapt test cases to the previous two and add a new variant to test the
diagnostics flag
- fix a few memory (and lock) leaks
- provide netbsd32 compat

allow mounting ext2fs and msdosfs
while there also enable lfs but that's untested

Remove COMPAT_SA / KERN_SA. Welcome to 6.99.3!
Approved by core@.

branches: 1.92.2;
Be consistent about whether idtype and objtype codes are signed or
unsigned. They are signed. (While unsigned might have been a better
choice, it doesn't really matter and the majority of preexisting uses
were signed. And consistency is good.)

Improve the names of some members of struct quotactl_args. These are
effectively function parameter names, but since they need to be
described with the same names in the man page the choices do matter.
Some.

Update compat_netbsd32 for new quotactl.

Add netbsd32_socklenp_t

branches: 1.88.2; 1.88.6;
As a precaution, add sys/param.h explicitly to some headers that will
no longer get it via sys/ucred.h and don't already include it
explicitly. These should in turn be removed when it can be confirmed
that it's safe to do so. (Because sys/param.h is full of things that
are often tested with #if, it's not in general safe to remove it
without checking, as such tests fail silently if the symbol goes
missing.)

dependant -> dependent

merge the bouyer-quota2 branch. This adds a new on-disk format
to store disk quota usage and limits, integrated with ffs
metadata. Usage is checked by fsck_ffs (no more quotacheck)
and is covered by the WAPBL journal. Enabled with kernel
option QUOTA2 (added where QUOTA was enabled in kernel config files),
turned on with tunefs(8) on a per-filesystem
basis. mount_mfs(8) can also turn quotas on.

See http://mail-index.netbsd.org/tech-kern/2011/02/19/msg010025.html
for details.

Add the ability to mount NFS filesystems in COMPAT_NETBSD32
If in the kernel and NFS_ARGS_ONLY, just export struct nfs_args and its flags.

branches: 1.84.4; 1.84.6; 1.84.8;
Merge from matt-nb5-mips64

Remove semicolon from NETBSD32TOx_UAP macro definitions.

Fix dev_t alignment, by not using the new 64bit value directly but
rather a 32bit aligned version (netbsd32_dev_t = netbsd32_uint64).

ok by cube@.

branches: 1.81.2;
Revert the previous packed attribute fix. Instead make netbsd32_time_t
of type netbsd32_int64 which provides a 64-bit value with a 32-bit
alignment.

Suggested by dsl.

Make netbsd32_timespec/netbsd32_timeval structures packed. This fix an
alignment problem between 64-bit kernel and 32-bit userland versions,
which ended in different structure sizes.

merge christos-time_t

branches: 1.78.4;
implement netbsd32__sched_setparam(), netbsd32__sched_getparam(),
netbsd32__sched_setaffinity() and netbsd32__sched_getaffinity().

branches: 1.77.2; 1.77.4;
Merge wrstuden-revivesa into HEAD.

branches: 1.76.4;
remove clause #3 from my license where there are no other
copyright holders involved.

Fix netbsd32_ipc_perm and netbsd32_shmid_ds structures to use correct
types.

branches: 1.74.6; 1.74.8; 1.74.10; 1.74.12;
Fix build

Use the netbsd32_[u]int64 type for all 64bit items to ensure we have the
correct alignment/padding rules.
Removed the now-unnecessary #pragma packed for amd64.
Should fix the alignment of 'struct netbsd32_kevent' on non-amd64.

Change u_intxx_t to uintxx_t and uint to unsigined int etc.
Fix indentation.

Convert many of the uses of __attribute__ to equivalent
__packed, __unused and __dead macros from cdefs.h

Convert all the system call entry points from:
int foo(struct lwp *l, void *v, register_t *retval)
to:
int foo(struct lwp *l, const struct foo_args *uap, register_t *retval)
Fixup compat code to not write into 'uap' and (in some cases) to actually
pass a correctly formatted 'uap' structure with the right name to the
next routine.
A few 'compat' routines that just call standard ones have been deleted.
All the 'compat' code compiles (along with the kernels required to test
build it).
98% done by automated scripts.

branches: 1.69.4;
Add: _lwp_setname, _lwp_getname, _lwp_ctl.

branches: 1.68.4; 1.68.6;
Use netbsd32_uint64 instead of fsblkcnt_t and fsfilcnt_t in order to get
the correct alignment (4 bytes for i386) for the whole structure.

branches: 1.67.2;
Define netbsd32_uint64 for 64bit integers with the alignment requirement
of the corresponding 32bit architecture.
Use it for the 64bit items in netbsd32_statvfs so that the structure
doesn't collect 8byte alignment (and 4 bytes of trailing padding).
This replaces the 'packed' attribute which wasn't architecture specific
and would cause massive overheads accessing every member of sparc64.
Should allow the MIPS64 port do DTRT.

branches: 1.66.6; 1.66.8;
include <compat/sys/mount.h> MFSNAMELEN

Changes to sompat socket function to avoid the dreaded stackgap.

Split netbsd32___semctl14() so that it is callable from
compat_10_netbsd32_sys_semsys() (where the one parameter is already in
kernel space).
Note that the code in compat_10_netbsd32_sys_semsys() has always been wrong,
since it called compat_14_sys___semctl() - which would read 64bit values!

Rework compat stat() and statvfs() code so that it no longer uses the stackgap.

Change all the NETBSD32PTR64(SCARG(uap, xxx))) to SCARG_P32(uap, xxx).

remove all the double (and triple) casts used to convert 32bit userspace
pointers to and from 64bit kernel pointers. Instead use the defines
NETBSD32PTR64(p32) to read a 32bit pointer and (the new) NETBSD32PTR32(p32,p64)
to write a 32bit pointer throughout.
The 32bit pointer is now a struct to enforce the above.
amd64 (with linux emul) and sparc64 will both compile (when the arch stuff
goes in soon), and amd64 still runs some i386 binaries.

branches: 1.60.2; 1.60.4; 1.60.6;
fix fallout from caddr_t changes.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

Introduce a new member to struct emul, e_startlwp, to be used by
sys__lwp_create. It allows using the said syscall under COMPAT_NETBSD32.

The libpthread regression tests now pass on amd64 and sparc64.

branches: 1.57.2;
Merge newlock2 to head.

adjust limits takes struct proc again.

From Nicolas Joly:

> It seems that 32bits programs, running under compat_netbsd32, using
> setrlimit force all other programs to have their maximum data size
> fixed at 3GB, where native 64bits apps used 8GB previously.

I tracked this one to the `netbsd32_adjust_limits()' function (called
when creating a new process under compat_netbsd32), where data and
stack limits are set without checking for shared `p_limit' structure
(p_limit->p_refcnt > 1). This explain the side effect where processes
have their limits changed when a compat_netbsd32 (or compat_linux32)
program is run.

The fix is to use `dosetrlimit()' to ensure the needed copy-on-write
behaviour for shared structure.

branches: 1.54.4;
Fix alignement problems for fhandle_t, exposed by gcc4.1.

While touching all vptofh/fhtovp functions, get rid of VFS_MAXFIDSIZ,
version the getfh(2) syscall and explicitly pass the size available in
the filehandle from userland.

Discussed on tech-kern, with lots of help from yamt (thanks!).

branches: 1.53.2;
support ntp_gettime again
compile tested by Havard Eidnes

branches: 1.52.2;
add an extra (uintptr_t) cast to NETBSD32TOP.

Implement the _lwp* and sa_* families of syscalls, using the newly
introduced hooks in the native code.

branches: 1.50.2; 1.50.4;
Implement the SysV IPC family of syscalls.

branches: 1.49.2;
Implement the ksem_* family of syscalls.

branches: 1.48.4; 1.48.6;
merge ktrace-lwp.

Move prototypes for siginfo32 to/from siginfo converters at the right
place.

- Split sys_kevent into kevent1 so that it can be used by COMPAT_NETBSD32
code.

- To achieve COMPAT_NETBSD32 compatibility, introduce a parameter to
kevent1 that points to functions that do the actual copyin/copyout
operations. This is similar to what was done in FreeBSD by Paul Saab.

- Add the COMPAT_NETBSD32 definitions and hooks.

branches: 1.45.2;
make the previous apply only to x86_64.

add __attribute__((packed)) to struct netbsd32_stat13. the alignment of
64-bit values is annoying in the x86 world: they require 64-bit alignment
in 64-bit mode but only 32-bit alignment in 32-bit mode.

this needs stuff from compat/sys/siginfo.h now, just include it here.

make this compile again.

make the siginfo converters static and comment out the one that is not used.

fix a compilation problem on NetBSD/amd64

Fix lossage I created with the 64 bit ino_t change.

64 bit inode changes.

Regen (__sigtimedwait(2)).

Implement the timer_create(2) family of syscalls.

netbsd32_execve2() doesn't exist anymore.

branches: 1.34.2;
Implement uuidgen(2).

Rework the coredump code to have no explicit knownledge of how coredump
i/o is done. Instead, pass an opaque cookie which is then passed to a
new routine, coredump_write, which does the actual i/o. This allows the
method of doing i/o to change without affecting any future MD code.
Also, make netbsd32_core.c [re]use core_netbsd.c (in a similar manner that
core_elf64.c uses core_elf32.c) and eliminate that code duplication.
cpu_coredump{,32} is now called twice, first with a NULL iocookie to fill
the core structure and a second to actually write md parts of the coredump.
All i/o is nolonger random access and is suitable for shipping over a stream.

in siginfo conversion functions, declare the source operand as "const"

Fix some things regarding COMPAT_NETBSD32 and limits/VM addresses.

* For sparc64 and amd64, define *SIZ32 VM constants.
* Add a new function pointer to struct emul, pointing at a function
that will return the default VM map address. The default function
is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS
macro. This gives emulations control over the default map address,
and allows things to be mapped at the right address (in 32bit range)
for COMPAT_NETBSD32.
* Add code to adjust the data and stack limits when a COMPAT_NETBSD32
or COMPAT_SVR4_32 binary is executed.
* Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr
instead (emulations might have set it differently)
* Since this changes struct emul, bump kernel version to 3.99.2

Tested on amd64, compile-tested on sparc64.

branches: 1.30.2;
nuke trailing whitespace

branches: 1.29.4; 1.29.6;
o Add support for the statvfs family of syscalls (statvfs1, fstatvfs1,
fhstatvfs1 and getvfsstat)
o Move the statfs family out of netbsd32_fs.c and netbsd32_netbsd.c to
netbsd_compat_20.c, compiled with COMPAT_20

Reviewed by christos@.

Tweak sysctl setup functions (the macros, actually) for use in lkms,
and tweak lkminit_*.c (where applicable) to call them, and to call
sysctl_teardown() when being unloaded.

This consists of (1) making setup functions not be static when being
compiled as lkms (change to sys/sysctl.h), (2) making prototypes
visible for the various setup functions in header files (changes to
various header files), and (3) making simple "load" and "unload"
functions in the actual lkminit stuff.

linux_sysctl.c also needs its root exposed (ie, made not static) for
this (when built as an lkm).

branches: 1.27.2;
delete ktrsyscall32() prototype

add a copy of the ktrsyscall() entry point for 32 bit emulated calls.
the main purpose of this function is to adjust the "argsize" value of
the ktrace syscall record, otherwise userland will see N/2 (rounded
down) arguments instead of N.

Implement 32bit get/setcontext entry points.

branches: 1.24.2;
Merge the nathanw_sa branch.

Complete the rename: s/sa_/<compat>_sa_/g

Also tweak the darwin siginfo stuff to avoid the same type of collision.

In preparation for COMPAT_NETBSD32 on SH-5:

- The MD netbsd32_machdep.h header now defines the 32-bit pointer type
instead of using u_int32_t everywhere,
- The MD netbsd32_machdep.h header now defines a macro (at least on
current implementations) which converts a 32-bit pointer to its 64-bit
equivalent,
- Change the MI code to utilise the above two items in all the right places,
- Implement netbsd32___sigaction_sigtramp().

Tested on Sparc64 by Matt Green.

Make the coredump routine exec-format/emulation specific. Split
out traditional NetBSD coredump routines into core_netbsd.c and
netbsd32_core.c (for COMPAT_NETBSD32).

update copyright notices.

branches: 1.19.2;
Some of this was sparc-specific, so ifdef __sparc__ it (XXX). Also,
change the alignment of one structure with an MD ifdef. Should
be moved into the netbsd32_machdep parts.

proto for coredump32

branches: 1.17.2;
make sysctl vm.loadavg work.

de-static netbsd32_exec_aout_prep_[zno]magic().
de-static netbsd32_from_stat43().
move the guts of netbsd32_execve() into netbsd32_execve2().

all of are for the forthcoming sunos32 compat mode (for sparc64).

Add systm.h to pull in copyout* prototypes.

add e_path (emulation path) to struct emul, which replaces emulation-specific
*_emul_path variables

change macros CHECK_ALT_{CREAT|EXIST} to use that, 'root' doesn't need
to be passed explicitly any more and *_CHECK_ALT_{CREAT|EXIST} are removed
change explicit emul_find() calls in probe functions to get the emulation
path from the checked exec switch entry's emulation

remove no longer needed header files

add e_flags and e_syscall to struct emul; these are unsed and empty for now

kill gcc warnings.

declare struct firm_event32

- massive warning fix fest.
- fix pread/pwrite return values (plus some other syscalls that looked
similarly broken).
- prototypes and clean up for netbsd32_ioctl.c

now getpw*() works under compat32!

branches: 1.10.4;
Update to 32-bit compatibility routines.

branches: 1.9.2;
Add netbsd32_compat_14.c

Rename everything from compat_netbsd32 -> netbsd32 so we don't have silly
names like compat_14_compat_netbsd32_sys_shmctl().

branches: 1.8.2;
XSH5: change function signature to `void *sbrk(intptr_t)'.

branches: 1.7.4;
clean and up make compile

SPARC32->NETBSD32

include the MD header.

move sparc32 to netbsd32; split out MD part (signal handling) (mostly via repository copy, rename and perl -pi :-)

Overhaul. Now will run simple things like /bin/sh and /bin/echo.

Need to make sure high bits of addresses are zeroed out.

add a 32-bit compatibility module for the sparc64 port, so it can run NetBSD/sparc binaries with a LP64 kernel.

s/strucure/structure/ and s/structues/structures/ in comments.

Implement support for mounting UDF in compat32
Fixes PR#56801

Adapt to recent posix_spawn extensions.

COMPAT_NETBSD32 is all about running the 32-bit flavor of native
binaries on a 64-bit platform[*], as such:
- Make the logic about which "sendsig" flavor to call MI (as it is in the
native 64-bit environment) and follow the same rules as the native 32-bit
environment.
- Make COMPAT_NETBSD32 x COMPAT_16 work the same as it would in the
native 32-bit environment by providing a netbsd32_sendsig_sigcontext_16_hook,
rather than overriding the entire sendsig logic with a netbsd32_sendsig_hook.
- In netbsd32___sigaction_sigtramp(), make sure the compat_netbsd32_16
module is loaded if the trampoline version specifies a sigcontext style
handler, otherwise return EINVAL so that libc can try again with siginfo
style.

[*] ...except for arm32, which uses it to mean "run 32-bit OABI binaries
from the 32-bit EABI environment". Doing it this way was arguably a mistake,
but we are stuck with it for now, so support it by providing a machine-
dependent override for netbsd32_sendsig() that also disables the corresponding
logic in netbsd32___sigaction_sigtramp().

Fixes PR kern/56487.

The read/write/send/recv system calls return ssize_t because -1 is
returned on error. Therefore we must restrict the lengths of any
buffers to NETBSD32_SSIZE_MAX with compat32 to avoid garbage return
values.

Fixes ATF lib/libc/sys/t_write:write_err.

s/u_intN_t/uintN_t/

Handle FSSIOCSET and FSSIOCGET; vndconfig(8) works with compat32 now.
XXX: FSSIOCSET50 and FSSIOCGET50 are not (yet) handled.

Separate the compat_netbsd32_coredump from the compat_netbsd32 and
coredump modules, into its own module.

Welcome to 7.99.75 !!!

branches: 1.133.2;
Add ACL support for FFS. From FreeBSD.

Introduce PT_LWPSTATUS + PT_LWPNEXT, obsolete PT_LWPINFO

PT_LWPINFO is a legacy ptrace(2) operation that was originally intended
to retrieve the thread (LWP) information inside a traced process.

It has a number of flaws and is confused with PT_LWPINFO from FreeBSD.

PT_LWPSTATUS and PT_LWPNEXT address the problems (shortly by: rename,
removal of pl_event) and introduces new features: signal context
(pl_sigpend, pl_sigmask), LWP name (pl_name), LWP TLS base address
(pl_private). The private pointer was so far missing information for
a debugger.

PT_LWPSTATUS@nnn is now shipped with core(5) files and contain LWP specific
information, so far missed in the core(5) files.

PT_LWPSTATUS retrieves LWP information for the prompted thread.
PT_LWPNEXT retrieves LWP information for the next thread, borrowing the
semantics from NetBSD specific PT_LWPINFO.

PT_LWPINFO is namespaced with __LEGACY_PT_LWPINFO and still available for
the foreseeable future, without plans of removing it.

Add ATF tests for PT_LWPSTATUS + PT_LWPNEXT.

Keep ATF tests for PT_LWPINFO.

Switch GDB to new API.

Proposed on tech-kern@.

8-byte objects on i386 or arm-oabi are aligned in 4-byte boundary.
Therefore, we must use __attribute__((__aligned__(4))) for them.
netbsd32_{,u}int64 are provided for this purpose. However, we
cannot use it in <compat/sys/siginfo.h> due to circular dependency
b/w <machine/netbsd32_machdep.h>.

In order to distangle it, we choose here to have a duplicate type,
netbsd32_siginfo_uint64, in <compat/sys/siginfo.h>. The equivalence
with netbsd32_uint64 is asserted in <compat/netbsd32/netbsd32.h>.

Now, gdb for i386 works again on amd64 kernel.

Based on patch provided by kamil. Thanks!

XXX
pullup to netbsd-9

Sorry, revert unintentional parts of the previous commit:
http://mail-index.netbsd.org/source-changes/2019/11/18/msg110946.html

I was going to commit only netbsd32_signal.c.

Belatedly catch up with kern_sig.c rev 1.358:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/kern/kern_sig.c#rev1.358

Provide syscall information with SIGTRAP TRAP_SCE/TRAP_SCX so that
picotrace/truss, for example, works fine on COMPAT_NETBSD32.

With some minor changes:

- Centralize netbsd32_si{,32}_si{32,}() into netbsd32_ksi{,32}_ksi{32,}().
- Provide si_status with SIGCHLD.
- Remove the remaining of SA.

XXX
pullup to netbsd-9

For netbsd32_statvfs, f_spare should be netbsd32_uint64, not uint64_t.

Fix syscalls using struct statvfs on COMPAT_NETBSD32 on amd64, where
NETBSD32_INT64_ALIGN is __attribute__((__aligned__(4))).

Switch kevent udata from intptr_t void*

Synchromize the struct field format with other BSDs and Darwin.

No ABI change between older and newer struct form on the ports.

The change will require no changes to most C users during the transition
period as the header keeps a caller cast.

Discussed with core@ and there were no objections for this move.

accrightslen should be u_int for compat too

avoid signed-compare warning; use uintmax_t to print.

Add a new member to struct vfsstat and grow the unused members
The new member is caled f_mntfromlabel and it is the dkw_wname
of the corresponding wedge. This is now used by df -W to display
the mountpoint name as NAME=

branches: 1.123.4;
use KASSERTMSG() in netbsd32_ptr32i().

- expand the comment about what netbsd32_machdep.h should provide.
- add missing NETBSD32_POINTER_TYPE
- add static inline functions to convert pointers to/from 32 bit,
inclusing an overflow check for NETBSD32PTR32PLUS().

Merge the [pgoyette-compat] branch

Restore netbsd32 compat code for new NPF ABI.

support nullfs in netbsd32.

branches: 1.118.2;
add {send,recv}mmsg

redo the previous -- compat/sys/siginfo.h is already included
later, as is another header. move them up near the top.

branches: 1.116.2;
include <compat/sys/siginfo.h> for siginfo32_t.

handle siginfo requests for ptrace32

branches: 1.114.8;
tv_usec in netbsd32_timeval is suseconds_t (aka int32_t) rather than
netbsd32_long (considered harmless)

approved by martin

PR kern/51514: ptrace(2) fails for 32-bit process on 64-bit kernel

Updated from the original patch in the PR by me.

Trailing whitespace

Types for wait6 and clock_getcpuclockid2

deal with not having KTRACE

branches: 1.109.2;
We never exec(2) with a kernel vmspace, so do not test for that, but instead
KASSERT() that we don't.
When calculating the load address for the interpreter (e.g. ld.elf_so),
we need to take into account wether the exec'd process will run with
topdown memory or bottom up. We can not use the current vmspace's flags
to test for that, as this happens too early. Luckily the execpack already
knows what the new state will be later, so instead of testing the current
vmspace, pass the info as additional argument to struct emul
e_vm_default_addr.
Fix all such functions and adopt all callers.

move some header-specific pointer-typedefs into a header-specific area.

add netbsd32 support for nfssvc(2). we do this by defining 5 copyin/out
functions that do all the ugly work, are just plain copyin/out for the
native system calls, and do the necessary translations for netbsd32.

with this i'm able to run 32 bit nfsd and mountd on 64 bit kernel and
mount the file systems remotely.

s/sparc64/native 64 bit/ in a comment...

Implement trivial conversion for pset_*

Implement modctl, sigqueinfo and mq_*

branches: 1.103.2;
add tmpfs.

branches: 1.102.2;
Revert the following changes:

src/sys/sys/quotactl.h 1.37
src/sys/compat/netbsd32/netbsd32.h 1.101
src/sys/compat/netbsd32/netbsd32_netbsd.c 1.188, 1.189
src/sys/kern/vfs_quotactl.c 1.39
src/sys/kern/vfs_syscalls.c 1.483
src/sys/ufs/lfs/ulfs_quota.c 1.11
src/sys/ufs/ufs/ufs_quota.c 1.116
src/lib/libquota/quota_kernel.c 1.5

and do them correctly.

If you're going to change the name of something, you need to change
the name of *all* the things with the same name, not just a handful,
and you should change it to something similar so it still matches the
rest of the system rather than just picking an arbitrarily different
name.

Hi, Joerg.

To wit, rename the quotactl "delete" operation to "del", because
"delete" is a reserved word in C++ and for some reason Joerg wants to
run internal interfaces used only by C code through his C++ compiler.
Do not rename it to "remove" instead, because this doesn't match
libquota or the rest of the usage throughout the system; and rename
all the related identifiers, not just the ones that blew the mind of
Joerg's C++ compiler.

Because this is not a user-facing API (the only userland consumer
sys/quotactl.h is libquota) it is sort of ok to make arbitrary
source-incompatible changes; however, by the same token it's completely
unnecessary. If it *were* a user-facing API that someone might have a
semi-rational reason to want to run a C++ compiler on, it would be
incorrect to change it at this point.

delete -> remove

Do not use native off_t type under compat netbsd32, but a new
netbsd32_off_t that provide the expected alignment for 64bit types.

branches: 1.99.2;
Properly translate struct swapent for COMPAT_NETBSD32 (missing commit)

sigaction until 1.4 had an int sigmask, don't trash the stack.

Change the type of the 'cookie' that holds the state of the core dump file
from 'void *' to the actual type 'struct coredump_iostate *'.
In most of the code the contents of the structure are still unknown.
This just stops the wrong type of pointer being passed to the 'void *'
parameter.
I hope I've found everything, amd64 GENERIC and i386 GENERIC & ALL compile.

branches: 1.96.2;
fix pre-5 stat system call structure which should have used the pre-64-time_t
timestamps!

branches: 1.95.2;
Rework posix_spawn locking and memory management:
- always provide a vmspace for the new proc, initially borrowing from proc0
(this part fixes PR 46286)
- increase parallelism between parent and child if arguments allow this,
avoiding a potential deadlock on exec_lock
- add a new flag for userland to request old (lockstepped) behaviour for
better error reporting
- adapt test cases to the previous two and add a new variant to test the
diagnostics flag
- fix a few memory (and lock) leaks
- provide netbsd32 compat

allow mounting ext2fs and msdosfs
while there also enable lfs but that's untested

Remove COMPAT_SA / KERN_SA. Welcome to 6.99.3!
Approved by core@.

branches: 1.92.2;
Be consistent about whether idtype and objtype codes are signed or
unsigned. They are signed. (While unsigned might have been a better
choice, it doesn't really matter and the majority of preexisting uses
were signed. And consistency is good.)

Improve the names of some members of struct quotactl_args. These are
effectively function parameter names, but since they need to be
described with the same names in the man page the choices do matter.
Some.

Update compat_netbsd32 for new quotactl.

Add netbsd32_socklenp_t

branches: 1.88.2; 1.88.6;
As a precaution, add sys/param.h explicitly to some headers that will
no longer get it via sys/ucred.h and don't already include it
explicitly. These should in turn be removed when it can be confirmed
that it's safe to do so. (Because sys/param.h is full of things that
are often tested with #if, it's not in general safe to remove it
without checking, as such tests fail silently if the symbol goes
missing.)

dependant -> dependent

merge the bouyer-quota2 branch. This adds a new on-disk format
to store disk quota usage and limits, integrated with ffs
metadata. Usage is checked by fsck_ffs (no more quotacheck)
and is covered by the WAPBL journal. Enabled with kernel
option QUOTA2 (added where QUOTA was enabled in kernel config files),
turned on with tunefs(8) on a per-filesystem
basis. mount_mfs(8) can also turn quotas on.

See http://mail-index.netbsd.org/tech-kern/2011/02/19/msg010025.html
for details.

Add the ability to mount NFS filesystems in COMPAT_NETBSD32
If in the kernel and NFS_ARGS_ONLY, just export struct nfs_args and its flags.

branches: 1.84.4; 1.84.6; 1.84.8;
Merge from matt-nb5-mips64

Remove semicolon from NETBSD32TOx_UAP macro definitions.

Fix dev_t alignment, by not using the new 64bit value directly but
rather a 32bit aligned version (netbsd32_dev_t = netbsd32_uint64).

ok by cube@.

branches: 1.81.2;
Revert the previous packed attribute fix. Instead make netbsd32_time_t
of type netbsd32_int64 which provides a 64-bit value with a 32-bit
alignment.

Suggested by dsl.

Make netbsd32_timespec/netbsd32_timeval structures packed. This fix an
alignment problem between 64-bit kernel and 32-bit userland versions,
which ended in different structure sizes.

merge christos-time_t

branches: 1.78.4;
implement netbsd32__sched_setparam(), netbsd32__sched_getparam(),
netbsd32__sched_setaffinity() and netbsd32__sched_getaffinity().

branches: 1.77.2; 1.77.4;
Merge wrstuden-revivesa into HEAD.

branches: 1.76.4;
remove clause #3 from my license where there are no other
copyright holders involved.

Fix netbsd32_ipc_perm and netbsd32_shmid_ds structures to use correct
types.

branches: 1.74.6; 1.74.8; 1.74.10; 1.74.12;
Fix build

Use the netbsd32_[u]int64 type for all 64bit items to ensure we have the
correct alignment/padding rules.
Removed the now-unnecessary #pragma packed for amd64.
Should fix the alignment of 'struct netbsd32_kevent' on non-amd64.

Change u_intxx_t to uintxx_t and uint to unsigined int etc.
Fix indentation.

Convert many of the uses of __attribute__ to equivalent
__packed, __unused and __dead macros from cdefs.h

Convert all the system call entry points from:
int foo(struct lwp *l, void *v, register_t *retval)
to:
int foo(struct lwp *l, const struct foo_args *uap, register_t *retval)
Fixup compat code to not write into 'uap' and (in some cases) to actually
pass a correctly formatted 'uap' structure with the right name to the
next routine.
A few 'compat' routines that just call standard ones have been deleted.
All the 'compat' code compiles (along with the kernels required to test
build it).
98% done by automated scripts.

branches: 1.69.4;
Add: _lwp_setname, _lwp_getname, _lwp_ctl.

branches: 1.68.4; 1.68.6;
Use netbsd32_uint64 instead of fsblkcnt_t and fsfilcnt_t in order to get
the correct alignment (4 bytes for i386) for the whole structure.

branches: 1.67.2;
Define netbsd32_uint64 for 64bit integers with the alignment requirement
of the corresponding 32bit architecture.
Use it for the 64bit items in netbsd32_statvfs so that the structure
doesn't collect 8byte alignment (and 4 bytes of trailing padding).
This replaces the 'packed' attribute which wasn't architecture specific
and would cause massive overheads accessing every member of sparc64.
Should allow the MIPS64 port do DTRT.

branches: 1.66.6; 1.66.8;
include <compat/sys/mount.h> MFSNAMELEN

Changes to sompat socket function to avoid the dreaded stackgap.

Split netbsd32___semctl14() so that it is callable from
compat_10_netbsd32_sys_semsys() (where the one parameter is already in
kernel space).
Note that the code in compat_10_netbsd32_sys_semsys() has always been wrong,
since it called compat_14_sys___semctl() - which would read 64bit values!

Rework compat stat() and statvfs() code so that it no longer uses the stackgap.

Change all the NETBSD32PTR64(SCARG(uap, xxx))) to SCARG_P32(uap, xxx).

remove all the double (and triple) casts used to convert 32bit userspace
pointers to and from 64bit kernel pointers. Instead use the defines
NETBSD32PTR64(p32) to read a 32bit pointer and (the new) NETBSD32PTR32(p32,p64)
to write a 32bit pointer throughout.
The 32bit pointer is now a struct to enforce the above.
amd64 (with linux emul) and sparc64 will both compile (when the arch stuff
goes in soon), and amd64 still runs some i386 binaries.

branches: 1.60.2; 1.60.4; 1.60.6;
fix fallout from caddr_t changes.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

Introduce a new member to struct emul, e_startlwp, to be used by
sys__lwp_create. It allows using the said syscall under COMPAT_NETBSD32.

The libpthread regression tests now pass on amd64 and sparc64.

branches: 1.57.2;
Merge newlock2 to head.

adjust limits takes struct proc again.

From Nicolas Joly:

> It seems that 32bits programs, running under compat_netbsd32, using
> setrlimit force all other programs to have their maximum data size
> fixed at 3GB, where native 64bits apps used 8GB previously.

I tracked this one to the `netbsd32_adjust_limits()' function (called
when creating a new process under compat_netbsd32), where data and
stack limits are set without checking for shared `p_limit' structure
(p_limit->p_refcnt > 1). This explain the side effect where processes
have their limits changed when a compat_netbsd32 (or compat_linux32)
program is run.

The fix is to use `dosetrlimit()' to ensure the needed copy-on-write
behaviour for shared structure.

branches: 1.54.4;
Fix alignement problems for fhandle_t, exposed by gcc4.1.

While touching all vptofh/fhtovp functions, get rid of VFS_MAXFIDSIZ,
version the getfh(2) syscall and explicitly pass the size available in
the filehandle from userland.

Discussed on tech-kern, with lots of help from yamt (thanks!).

branches: 1.53.2;
support ntp_gettime again
compile tested by Havard Eidnes

branches: 1.52.2;
add an extra (uintptr_t) cast to NETBSD32TOP.

Implement the _lwp* and sa_* families of syscalls, using the newly
introduced hooks in the native code.

branches: 1.50.2; 1.50.4;
Implement the SysV IPC family of syscalls.

branches: 1.49.2;
Implement the ksem_* family of syscalls.

branches: 1.48.4; 1.48.6;
merge ktrace-lwp.

Move prototypes for siginfo32 to/from siginfo converters at the right
place.

- Split sys_kevent into kevent1 so that it can be used by COMPAT_NETBSD32
code.

- To achieve COMPAT_NETBSD32 compatibility, introduce a parameter to
kevent1 that points to functions that do the actual copyin/copyout
operations. This is similar to what was done in FreeBSD by Paul Saab.

- Add the COMPAT_NETBSD32 definitions and hooks.

branches: 1.45.2;
make the previous apply only to x86_64.

add __attribute__((packed)) to struct netbsd32_stat13. the alignment of
64-bit values is annoying in the x86 world: they require 64-bit alignment
in 64-bit mode but only 32-bit alignment in 32-bit mode.

this needs stuff from compat/sys/siginfo.h now, just include it here.

make this compile again.

make the siginfo converters static and comment out the one that is not used.

fix a compilation problem on NetBSD/amd64

Fix lossage I created with the 64 bit ino_t change.

64 bit inode changes.

Regen (__sigtimedwait(2)).

Implement the timer_create(2) family of syscalls.

netbsd32_execve2() doesn't exist anymore.

branches: 1.34.2;
Implement uuidgen(2).

Rework the coredump code to have no explicit knownledge of how coredump
i/o is done. Instead, pass an opaque cookie which is then passed to a
new routine, coredump_write, which does the actual i/o. This allows the
method of doing i/o to change without affecting any future MD code.
Also, make netbsd32_core.c [re]use core_netbsd.c (in a similar manner that
core_elf64.c uses core_elf32.c) and eliminate that code duplication.
cpu_coredump{,32} is now called twice, first with a NULL iocookie to fill
the core structure and a second to actually write md parts of the coredump.
All i/o is nolonger random access and is suitable for shipping over a stream.

in siginfo conversion functions, declare the source operand as "const"

Fix some things regarding COMPAT_NETBSD32 and limits/VM addresses.

* For sparc64 and amd64, define *SIZ32 VM constants.
* Add a new function pointer to struct emul, pointing at a function
that will return the default VM map address. The default function
is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS
macro. This gives emulations control over the default map address,
and allows things to be mapped at the right address (in 32bit range)
for COMPAT_NETBSD32.
* Add code to adjust the data and stack limits when a COMPAT_NETBSD32
or COMPAT_SVR4_32 binary is executed.
* Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr
instead (emulations might have set it differently)
* Since this changes struct emul, bump kernel version to 3.99.2

Tested on amd64, compile-tested on sparc64.

branches: 1.30.2;
nuke trailing whitespace

branches: 1.29.4; 1.29.6;
o Add support for the statvfs family of syscalls (statvfs1, fstatvfs1,
fhstatvfs1 and getvfsstat)
o Move the statfs family out of netbsd32_fs.c and netbsd32_netbsd.c to
netbsd_compat_20.c, compiled with COMPAT_20

Reviewed by christos@.

Tweak sysctl setup functions (the macros, actually) for use in lkms,
and tweak lkminit_*.c (where applicable) to call them, and to call
sysctl_teardown() when being unloaded.

This consists of (1) making setup functions not be static when being
compiled as lkms (change to sys/sysctl.h), (2) making prototypes
visible for the various setup functions in header files (changes to
various header files), and (3) making simple "load" and "unload"
functions in the actual lkminit stuff.

linux_sysctl.c also needs its root exposed (ie, made not static) for
this (when built as an lkm).

branches: 1.27.2;
delete ktrsyscall32() prototype

add a copy of the ktrsyscall() entry point for 32 bit emulated calls.
the main purpose of this function is to adjust the "argsize" value of
the ktrace syscall record, otherwise userland will see N/2 (rounded
down) arguments instead of N.

Implement 32bit get/setcontext entry points.

branches: 1.24.2;
Merge the nathanw_sa branch.

Complete the rename: s/sa_/<compat>_sa_/g

Also tweak the darwin siginfo stuff to avoid the same type of collision.

In preparation for COMPAT_NETBSD32 on SH-5:

- The MD netbsd32_machdep.h header now defines the 32-bit pointer type
instead of using u_int32_t everywhere,
- The MD netbsd32_machdep.h header now defines a macro (at least on
current implementations) which converts a 32-bit pointer to its 64-bit
equivalent,
- Change the MI code to utilise the above two items in all the right places,
- Implement netbsd32___sigaction_sigtramp().

Tested on Sparc64 by Matt Green.

Make the coredump routine exec-format/emulation specific. Split
out traditional NetBSD coredump routines into core_netbsd.c and
netbsd32_core.c (for COMPAT_NETBSD32).

update copyright notices.

branches: 1.19.2;
Some of this was sparc-specific, so ifdef __sparc__ it (XXX). Also,
change the alignment of one structure with an MD ifdef. Should
be moved into the netbsd32_machdep parts.

proto for coredump32

branches: 1.17.2;
make sysctl vm.loadavg work.

de-static netbsd32_exec_aout_prep_[zno]magic().
de-static netbsd32_from_stat43().
move the guts of netbsd32_execve() into netbsd32_execve2().

all of are for the forthcoming sunos32 compat mode (for sparc64).

Add systm.h to pull in copyout* prototypes.

add e_path (emulation path) to struct emul, which replaces emulation-specific
*_emul_path variables

change macros CHECK_ALT_{CREAT|EXIST} to use that, 'root' doesn't need
to be passed explicitly any more and *_CHECK_ALT_{CREAT|EXIST} are removed
change explicit emul_find() calls in probe functions to get the emulation
path from the checked exec switch entry's emulation

remove no longer needed header files

add e_flags and e_syscall to struct emul; these are unsed and empty for now

kill gcc warnings.

declare struct firm_event32

- massive warning fix fest.
- fix pread/pwrite return values (plus some other syscalls that looked
similarly broken).
- prototypes and clean up for netbsd32_ioctl.c

now getpw*() works under compat32!

branches: 1.10.4;
Update to 32-bit compatibility routines.

branches: 1.9.2;
Add netbsd32_compat_14.c

Rename everything from compat_netbsd32 -> netbsd32 so we don't have silly
names like compat_14_compat_netbsd32_sys_shmctl().

branches: 1.8.2;
XSH5: change function signature to `void *sbrk(intptr_t)'.

branches: 1.7.4;
clean and up make compile

SPARC32->NETBSD32

include the MD header.

move sparc32 to netbsd32; split out MD part (signal handling) (mostly via repository copy, rename and perl -pi :-)

Overhaul. Now will run simple things like /bin/sh and /bin/echo.

Need to make sure high bits of addresses are zeroed out.

add a 32-bit compatibility module for the sparc64 port, so it can run NetBSD/sparc binaries with a LP64 kernel.

Implement support for mounting UDF in compat32
Fixes PR#56801

Adapt to recent posix_spawn extensions.

COMPAT_NETBSD32 is all about running the 32-bit flavor of native
binaries on a 64-bit platform[*], as such:
- Make the logic about which "sendsig" flavor to call MI (as it is in the
native 64-bit environment) and follow the same rules as the native 32-bit
environment.
- Make COMPAT_NETBSD32 x COMPAT_16 work the same as it would in the
native 32-bit environment by providing a netbsd32_sendsig_sigcontext_16_hook,
rather than overriding the entire sendsig logic with a netbsd32_sendsig_hook.
- In netbsd32___sigaction_sigtramp(), make sure the compat_netbsd32_16
module is loaded if the trampoline version specifies a sigcontext style
handler, otherwise return EINVAL so that libc can try again with siginfo
style.

[*] ...except for arm32, which uses it to mean "run 32-bit OABI binaries
from the 32-bit EABI environment". Doing it this way was arguably a mistake,
but we are stuck with it for now, so support it by providing a machine-
dependent override for netbsd32_sendsig() that also disables the corresponding
logic in netbsd32___sigaction_sigtramp().

Fixes PR kern/56487.

The read/write/send/recv system calls return ssize_t because -1 is
returned on error. Therefore we must restrict the lengths of any
buffers to NETBSD32_SSIZE_MAX with compat32 to avoid garbage return
values.

Fixes ATF lib/libc/sys/t_write:write_err.

s/u_intN_t/uintN_t/

Handle FSSIOCSET and FSSIOCGET; vndconfig(8) works with compat32 now.
XXX: FSSIOCSET50 and FSSIOCGET50 are not (yet) handled.

Separate the compat_netbsd32_coredump from the compat_netbsd32 and
coredump modules, into its own module.

Welcome to 7.99.75 !!!

branches: 1.133.2;
Add ACL support for FFS. From FreeBSD.

Introduce PT_LWPSTATUS + PT_LWPNEXT, obsolete PT_LWPINFO

PT_LWPINFO is a legacy ptrace(2) operation that was originally intended
to retrieve the thread (LWP) information inside a traced process.

It has a number of flaws and is confused with PT_LWPINFO from FreeBSD.

PT_LWPSTATUS and PT_LWPNEXT address the problems (shortly by: rename,
removal of pl_event) and introduces new features: signal context
(pl_sigpend, pl_sigmask), LWP name (pl_name), LWP TLS base address
(pl_private). The private pointer was so far missing information for
a debugger.

PT_LWPSTATUS@nnn is now shipped with core(5) files and contain LWP specific
information, so far missed in the core(5) files.

PT_LWPSTATUS retrieves LWP information for the prompted thread.
PT_LWPNEXT retrieves LWP information for the next thread, borrowing the
semantics from NetBSD specific PT_LWPINFO.

PT_LWPINFO is namespaced with __LEGACY_PT_LWPINFO and still available for
the foreseeable future, without plans of removing it.

Add ATF tests for PT_LWPSTATUS + PT_LWPNEXT.

Keep ATF tests for PT_LWPINFO.

Switch GDB to new API.

Proposed on tech-kern@.

8-byte objects on i386 or arm-oabi are aligned in 4-byte boundary.
Therefore, we must use __attribute__((__aligned__(4))) for them.
netbsd32_{,u}int64 are provided for this purpose. However, we
cannot use it in <compat/sys/siginfo.h> due to circular dependency
b/w <machine/netbsd32_machdep.h>.

In order to distangle it, we choose here to have a duplicate type,
netbsd32_siginfo_uint64, in <compat/sys/siginfo.h>. The equivalence
with netbsd32_uint64 is asserted in <compat/netbsd32/netbsd32.h>.

Now, gdb for i386 works again on amd64 kernel.

Based on patch provided by kamil. Thanks!

XXX
pullup to netbsd-9

Sorry, revert unintentional parts of the previous commit:
http://mail-index.netbsd.org/source-changes/2019/11/18/msg110946.html

I was going to commit only netbsd32_signal.c.

Belatedly catch up with kern_sig.c rev 1.358:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/kern/kern_sig.c#rev1.358

Provide syscall information with SIGTRAP TRAP_SCE/TRAP_SCX so that
picotrace/truss, for example, works fine on COMPAT_NETBSD32.

With some minor changes:

- Centralize netbsd32_si{,32}_si{32,}() into netbsd32_ksi{,32}_ksi{32,}().
- Provide si_status with SIGCHLD.
- Remove the remaining of SA.

XXX
pullup to netbsd-9

For netbsd32_statvfs, f_spare should be netbsd32_uint64, not uint64_t.

Fix syscalls using struct statvfs on COMPAT_NETBSD32 on amd64, where
NETBSD32_INT64_ALIGN is __attribute__((__aligned__(4))).

Switch kevent udata from intptr_t void*

Synchromize the struct field format with other BSDs and Darwin.

No ABI change between older and newer struct form on the ports.

The change will require no changes to most C users during the transition
period as the header keeps a caller cast.

Discussed with core@ and there were no objections for this move.

accrightslen should be u_int for compat too

avoid signed-compare warning; use uintmax_t to print.

Add a new member to struct vfsstat and grow the unused members
The new member is caled f_mntfromlabel and it is the dkw_wname
of the corresponding wedge. This is now used by df -W to display
the mountpoint name as NAME=

branches: 1.123.4;
use KASSERTMSG() in netbsd32_ptr32i().

- expand the comment about what netbsd32_machdep.h should provide.
- add missing NETBSD32_POINTER_TYPE
- add static inline functions to convert pointers to/from 32 bit,
inclusing an overflow check for NETBSD32PTR32PLUS().

Merge the [pgoyette-compat] branch

Restore netbsd32 compat code for new NPF ABI.

support nullfs in netbsd32.

branches: 1.118.2;
add {send,recv}mmsg

redo the previous -- compat/sys/siginfo.h is already included
later, as is another header. move them up near the top.

branches: 1.116.2;
include <compat/sys/siginfo.h> for siginfo32_t.

handle siginfo requests for ptrace32

branches: 1.114.8;
tv_usec in netbsd32_timeval is suseconds_t (aka int32_t) rather than
netbsd32_long (considered harmless)

approved by martin

PR kern/51514: ptrace(2) fails for 32-bit process on 64-bit kernel

Updated from the original patch in the PR by me.

Trailing whitespace

Types for wait6 and clock_getcpuclockid2

deal with not having KTRACE

branches: 1.109.2;
We never exec(2) with a kernel vmspace, so do not test for that, but instead
KASSERT() that we don't.
When calculating the load address for the interpreter (e.g. ld.elf_so),
we need to take into account wether the exec'd process will run with
topdown memory or bottom up. We can not use the current vmspace's flags
to test for that, as this happens too early. Luckily the execpack already
knows what the new state will be later, so instead of testing the current
vmspace, pass the info as additional argument to struct emul
e_vm_default_addr.
Fix all such functions and adopt all callers.

move some header-specific pointer-typedefs into a header-specific area.

add netbsd32 support for nfssvc(2). we do this by defining 5 copyin/out
functions that do all the ugly work, are just plain copyin/out for the
native system calls, and do the necessary translations for netbsd32.

with this i'm able to run 32 bit nfsd and mountd on 64 bit kernel and
mount the file systems remotely.

s/sparc64/native 64 bit/ in a comment...

Implement trivial conversion for pset_*

Implement modctl, sigqueinfo and mq_*

branches: 1.103.2;
add tmpfs.

branches: 1.102.2;
Revert the following changes:

src/sys/sys/quotactl.h 1.37
src/sys/compat/netbsd32/netbsd32.h 1.101
src/sys/compat/netbsd32/netbsd32_netbsd.c 1.188, 1.189
src/sys/kern/vfs_quotactl.c 1.39
src/sys/kern/vfs_syscalls.c 1.483
src/sys/ufs/lfs/ulfs_quota.c 1.11
src/sys/ufs/ufs/ufs_quota.c 1.116
src/lib/libquota/quota_kernel.c 1.5

and do them correctly.

If you're going to change the name of something, you need to change
the name of *all* the things with the same name, not just a handful,
and you should change it to something similar so it still matches the
rest of the system rather than just picking an arbitrarily different
name.

Hi, Joerg.

To wit, rename the quotactl "delete" operation to "del", because
"delete" is a reserved word in C++ and for some reason Joerg wants to
run internal interfaces used only by C code through his C++ compiler.
Do not rename it to "remove" instead, because this doesn't match
libquota or the rest of the usage throughout the system; and rename
all the related identifiers, not just the ones that blew the mind of
Joerg's C++ compiler.

Because this is not a user-facing API (the only userland consumer
sys/quotactl.h is libquota) it is sort of ok to make arbitrary
source-incompatible changes; however, by the same token it's completely
unnecessary. If it *were* a user-facing API that someone might have a
semi-rational reason to want to run a C++ compiler on, it would be
incorrect to change it at this point.

delete -> remove

Do not use native off_t type under compat netbsd32, but a new
netbsd32_off_t that provide the expected alignment for 64bit types.

branches: 1.99.2;
Properly translate struct swapent for COMPAT_NETBSD32 (missing commit)

sigaction until 1.4 had an int sigmask, don't trash the stack.

Change the type of the 'cookie' that holds the state of the core dump file
from 'void *' to the actual type 'struct coredump_iostate *'.
In most of the code the contents of the structure are still unknown.
This just stops the wrong type of pointer being passed to the 'void *'
parameter.
I hope I've found everything, amd64 GENERIC and i386 GENERIC & ALL compile.

branches: 1.96.2;
fix pre-5 stat system call structure which should have used the pre-64-time_t
timestamps!

branches: 1.95.2;
Rework posix_spawn locking and memory management:
- always provide a vmspace for the new proc, initially borrowing from proc0
(this part fixes PR 46286)
- increase parallelism between parent and child if arguments allow this,
avoiding a potential deadlock on exec_lock
- add a new flag for userland to request old (lockstepped) behaviour for
better error reporting
- adapt test cases to the previous two and add a new variant to test the
diagnostics flag
- fix a few memory (and lock) leaks
- provide netbsd32 compat

allow mounting ext2fs and msdosfs
while there also enable lfs but that's untested

Remove COMPAT_SA / KERN_SA. Welcome to 6.99.3!
Approved by core@.

branches: 1.92.2;
Be consistent about whether idtype and objtype codes are signed or
unsigned. They are signed. (While unsigned might have been a better
choice, it doesn't really matter and the majority of preexisting uses
were signed. And consistency is good.)

Improve the names of some members of struct quotactl_args. These are
effectively function parameter names, but since they need to be
described with the same names in the man page the choices do matter.
Some.

Update compat_netbsd32 for new quotactl.

Add netbsd32_socklenp_t

branches: 1.88.2; 1.88.6;
As a precaution, add sys/param.h explicitly to some headers that will
no longer get it via sys/ucred.h and don't already include it
explicitly. These should in turn be removed when it can be confirmed
that it's safe to do so. (Because sys/param.h is full of things that
are often tested with #if, it's not in general safe to remove it
without checking, as such tests fail silently if the symbol goes
missing.)

dependant -> dependent

merge the bouyer-quota2 branch. This adds a new on-disk format
to store disk quota usage and limits, integrated with ffs
metadata. Usage is checked by fsck_ffs (no more quotacheck)
and is covered by the WAPBL journal. Enabled with kernel
option QUOTA2 (added where QUOTA was enabled in kernel config files),
turned on with tunefs(8) on a per-filesystem
basis. mount_mfs(8) can also turn quotas on.

See http://mail-index.netbsd.org/tech-kern/2011/02/19/msg010025.html
for details.

Add the ability to mount NFS filesystems in COMPAT_NETBSD32
If in the kernel and NFS_ARGS_ONLY, just export struct nfs_args and its flags.

branches: 1.84.4; 1.84.6; 1.84.8;
Merge from matt-nb5-mips64

Remove semicolon from NETBSD32TOx_UAP macro definitions.

Fix dev_t alignment, by not using the new 64bit value directly but
rather a 32bit aligned version (netbsd32_dev_t = netbsd32_uint64).

ok by cube@.

branches: 1.81.2;
Revert the previous packed attribute fix. Instead make netbsd32_time_t
of type netbsd32_int64 which provides a 64-bit value with a 32-bit
alignment.

Suggested by dsl.

Make netbsd32_timespec/netbsd32_timeval structures packed. This fix an
alignment problem between 64-bit kernel and 32-bit userland versions,
which ended in different structure sizes.

merge christos-time_t

branches: 1.78.4;
implement netbsd32__sched_setparam(), netbsd32__sched_getparam(),
netbsd32__sched_setaffinity() and netbsd32__sched_getaffinity().

branches: 1.77.2; 1.77.4;
Merge wrstuden-revivesa into HEAD.

branches: 1.76.4;
remove clause #3 from my license where there are no other
copyright holders involved.

Fix netbsd32_ipc_perm and netbsd32_shmid_ds structures to use correct
types.

branches: 1.74.6; 1.74.8; 1.74.10; 1.74.12;
Fix build

Use the netbsd32_[u]int64 type for all 64bit items to ensure we have the
correct alignment/padding rules.
Removed the now-unnecessary #pragma packed for amd64.
Should fix the alignment of 'struct netbsd32_kevent' on non-amd64.

Change u_intxx_t to uintxx_t and uint to unsigined int etc.
Fix indentation.

Convert many of the uses of __attribute__ to equivalent
__packed, __unused and __dead macros from cdefs.h

Convert all the system call entry points from:
int foo(struct lwp *l, void *v, register_t *retval)
to:
int foo(struct lwp *l, const struct foo_args *uap, register_t *retval)
Fixup compat code to not write into 'uap' and (in some cases) to actually
pass a correctly formatted 'uap' structure with the right name to the
next routine.
A few 'compat' routines that just call standard ones have been deleted.
All the 'compat' code compiles (along with the kernels required to test
build it).
98% done by automated scripts.

branches: 1.69.4;
Add: _lwp_setname, _lwp_getname, _lwp_ctl.

branches: 1.68.4; 1.68.6;
Use netbsd32_uint64 instead of fsblkcnt_t and fsfilcnt_t in order to get
the correct alignment (4 bytes for i386) for the whole structure.

branches: 1.67.2;
Define netbsd32_uint64 for 64bit integers with the alignment requirement
of the corresponding 32bit architecture.
Use it for the 64bit items in netbsd32_statvfs so that the structure
doesn't collect 8byte alignment (and 4 bytes of trailing padding).
This replaces the 'packed' attribute which wasn't architecture specific
and would cause massive overheads accessing every member of sparc64.
Should allow the MIPS64 port do DTRT.

branches: 1.66.6; 1.66.8;
include <compat/sys/mount.h> MFSNAMELEN

Changes to sompat socket function to avoid the dreaded stackgap.

Split netbsd32___semctl14() so that it is callable from
compat_10_netbsd32_sys_semsys() (where the one parameter is already in
kernel space).
Note that the code in compat_10_netbsd32_sys_semsys() has always been wrong,
since it called compat_14_sys___semctl() - which would read 64bit values!

Rework compat stat() and statvfs() code so that it no longer uses the stackgap.

Change all the NETBSD32PTR64(SCARG(uap, xxx))) to SCARG_P32(uap, xxx).

remove all the double (and triple) casts used to convert 32bit userspace
pointers to and from 64bit kernel pointers. Instead use the defines
NETBSD32PTR64(p32) to read a 32bit pointer and (the new) NETBSD32PTR32(p32,p64)
to write a 32bit pointer throughout.
The 32bit pointer is now a struct to enforce the above.
amd64 (with linux emul) and sparc64 will both compile (when the arch stuff
goes in soon), and amd64 still runs some i386 binaries.

branches: 1.60.2; 1.60.4; 1.60.6;
fix fallout from caddr_t changes.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

Introduce a new member to struct emul, e_startlwp, to be used by
sys__lwp_create. It allows using the said syscall under COMPAT_NETBSD32.

The libpthread regression tests now pass on amd64 and sparc64.

branches: 1.57.2;
Merge newlock2 to head.

adjust limits takes struct proc again.

From Nicolas Joly:

> It seems that 32bits programs, running under compat_netbsd32, using
> setrlimit force all other programs to have their maximum data size
> fixed at 3GB, where native 64bits apps used 8GB previously.

I tracked this one to the `netbsd32_adjust_limits()' function (called
when creating a new process under compat_netbsd32), where data and
stack limits are set without checking for shared `p_limit' structure
(p_limit->p_refcnt > 1). This explain the side effect where processes
have their limits changed when a compat_netbsd32 (or compat_linux32)
program is run.

The fix is to use `dosetrlimit()' to ensure the needed copy-on-write
behaviour for shared structure.

branches: 1.54.4;
Fix alignement problems for fhandle_t, exposed by gcc4.1.

While touching all vptofh/fhtovp functions, get rid of VFS_MAXFIDSIZ,
version the getfh(2) syscall and explicitly pass the size available in
the filehandle from userland.

Discussed on tech-kern, with lots of help from yamt (thanks!).

branches: 1.53.2;
support ntp_gettime again
compile tested by Havard Eidnes

branches: 1.52.2;
add an extra (uintptr_t) cast to NETBSD32TOP.

Implement the _lwp* and sa_* families of syscalls, using the newly
introduced hooks in the native code.

branches: 1.50.2; 1.50.4;
Implement the SysV IPC family of syscalls.

branches: 1.49.2;
Implement the ksem_* family of syscalls.

branches: 1.48.4; 1.48.6;
merge ktrace-lwp.

Move prototypes for siginfo32 to/from siginfo converters at the right
place.

- Split sys_kevent into kevent1 so that it can be used by COMPAT_NETBSD32
code.

- To achieve COMPAT_NETBSD32 compatibility, introduce a parameter to
kevent1 that points to functions that do the actual copyin/copyout
operations. This is similar to what was done in FreeBSD by Paul Saab.

- Add the COMPAT_NETBSD32 definitions and hooks.

branches: 1.45.2;
make the previous apply only to x86_64.

add __attribute__((packed)) to struct netbsd32_stat13. the alignment of
64-bit values is annoying in the x86 world: they require 64-bit alignment
in 64-bit mode but only 32-bit alignment in 32-bit mode.

this needs stuff from compat/sys/siginfo.h now, just include it here.

make this compile again.

make the siginfo converters static and comment out the one that is not used.

fix a compilation problem on NetBSD/amd64

Fix lossage I created with the 64 bit ino_t change.

64 bit inode changes.

Regen (__sigtimedwait(2)).

Implement the timer_create(2) family of syscalls.

netbsd32_execve2() doesn't exist anymore.

branches: 1.34.2;
Implement uuidgen(2).

Rework the coredump code to have no explicit knownledge of how coredump
i/o is done. Instead, pass an opaque cookie which is then passed to a
new routine, coredump_write, which does the actual i/o. This allows the
method of doing i/o to change without affecting any future MD code.
Also, make netbsd32_core.c [re]use core_netbsd.c (in a similar manner that
core_elf64.c uses core_elf32.c) and eliminate that code duplication.
cpu_coredump{,32} is now called twice, first with a NULL iocookie to fill
the core structure and a second to actually write md parts of the coredump.
All i/o is nolonger random access and is suitable for shipping over a stream.

in siginfo conversion functions, declare the source operand as "const"

Fix some things regarding COMPAT_NETBSD32 and limits/VM addresses.

* For sparc64 and amd64, define *SIZ32 VM constants.
* Add a new function pointer to struct emul, pointing at a function
that will return the default VM map address. The default function
is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS
macro. This gives emulations control over the default map address,
and allows things to be mapped at the right address (in 32bit range)
for COMPAT_NETBSD32.
* Add code to adjust the data and stack limits when a COMPAT_NETBSD32
or COMPAT_SVR4_32 binary is executed.
* Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr
instead (emulations might have set it differently)
* Since this changes struct emul, bump kernel version to 3.99.2

Tested on amd64, compile-tested on sparc64.

branches: 1.30.2;
nuke trailing whitespace

branches: 1.29.4; 1.29.6;
o Add support for the statvfs family of syscalls (statvfs1, fstatvfs1,
fhstatvfs1 and getvfsstat)
o Move the statfs family out of netbsd32_fs.c and netbsd32_netbsd.c to
netbsd_compat_20.c, compiled with COMPAT_20

Reviewed by christos@.

Tweak sysctl setup functions (the macros, actually) for use in lkms,
and tweak lkminit_*.c (where applicable) to call them, and to call
sysctl_teardown() when being unloaded.

This consists of (1) making setup functions not be static when being
compiled as lkms (change to sys/sysctl.h), (2) making prototypes
visible for the various setup functions in header files (changes to
various header files), and (3) making simple "load" and "unload"
functions in the actual lkminit stuff.

linux_sysctl.c also needs its root exposed (ie, made not static) for
this (when built as an lkm).

branches: 1.27.2;
delete ktrsyscall32() prototype