add support COMPAT_LINUX32 for aarch64

branches: 1.1.2; 1.1.4; 1.1.8; 1.1.18;
descend and regen

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

- LINUX_GO_RT0_SIGNATURE for compat_linux is no longer enabled by default.
it is now defined in each arch same as the other *_SIGNATURE definitions.
- add new LINUX32_GO_RT0_SIGNATURE for compat_linux32, and is defined in amd64 and aarch64.

add support COMPAT_LINUX32 for aarch64

compat_linux32: KASSERT(A && B) -> KASSERT(A); KASSERT(B)

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

Remove ryo@'s mail addresses.

Fixed a bug in sigreturn that sigmask was not restored.

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

Remove ryo@'s mail addresses.

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

regen

regen

add support COMPAT_LINUX32 for aarch64

regen

regen

add support COMPAT_LINUX32 for aarch64

regen

regen

add support COMPAT_LINUX32 for aarch64

regen

regen

add support COMPAT_LINUX32 for aarch64

regen

regen

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

add support COMPAT_LINUX32 for aarch64

add prlimit64(2) syscall to COMPAT_LINUX and COMPAT_LINUX32

Add pselect6(2) system call to COMPAT_LINUX32

add support COMPAT_LINUX32 for aarch64

Remove now unneeded bsd.kinc.mk.

branches: 1.1.2; 1.1.10; 1.1.16; 1.1.22; 1.1.112; 1.1.122; 1.1.128; 1.1.138;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

Add compat linux32 ipc(2) syscall support, for shared memory and
semaphores.

branches: 1.2.6; 1.2.8; 1.2.10; 1.2.12;
compat linux (and linux32) uid16 functions cleanup and fixes.

- Move uid16 functions to their own file linux_uid16.c, included by
needed archs (arm, i386 and m68k).
- Add new MI types linux_{u,g}id16_t.
- Add macros to handle linux_uid16_t and uid_t conversions.
- Add linux_sys_getres{uid,gid}16 syscalls, to fix an overflow with
bad sizes given to copyout when linux_sys_getres{uid,gid} are used.
- Update arm syscall table to use more uid16 functions.

branches: 1.1.2; 1.1.10; 1.1.16; 1.1.22; 1.1.48; 1.1.54; 1.1.62;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

branches: 1.1.2; 1.1.10; 1.1.16; 1.1.22;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

- LINUX_GO_RT0_SIGNATURE for compat_linux is no longer enabled by default.
it is now defined in each arch same as the other *_SIGNATURE definitions.
- add new LINUX32_GO_RT0_SIGNATURE for compat_linux32, and is defined in amd64 and aarch64.

Extra arguments for AT_HWCAP and AT_PLATFORM are now passed when executing linux32 binaries.

AT_SYSINFO (vsyscall) feature seems to be broken, so leave it commented out.

The default name of the `exec_setup_stack' function for linux32 should be `linux32_exec_setup_stack',
and it should be defined in each arch.
declaration of linux32_exec_setup_stack() in linux32/amd64 has been removed because it does not exist.

NFC.

catch up with unit fixes for es_arglen; consistently use bytes.

branches: 1.6.6; 1.6.20;
Increase LINUX32_ELF_AUX_ENTRIES to avoid overrun in linux32/. Also,
add comments and KASSERTs to make sure people don't forget to increase
XX_AUX_ENTRIES's when adding vectors.

Reported by martin@ (CV), with suggestions from chs@.

ok martin@ chs@

account for the 16 bytes of AT_RANDOM data in the stack setup. fixes PR 48518.
use cprng_strong32() instead of random(). add AT_RANDOM support for linux32.

branches: 1.4.8; 1.4.18; 1.4.22;
many changes for COMPAT_LINUX:
- update the linux syscall table for each platform.
- support new-style (NPTL) linux pthreads on all platforms.
clone() with CLONE_THREAD uses 1 process with many LWPs
instead of separate processes.
- move the contents of sys__lwp_setprivate() into a new
lwp_setprivate() and use that everywhere.
- update linux_release[] and linux32_release[] to "2.6.18".
- adjust placement of emul fork/exec/exit hooks as needed
and adjust other emul code to match.
- convert all struct emul definitions to use named initializers.
- change the pid allocator to allow multiple pids to refer to the same proc.
- remove a few fields from struct proc that are no longer needed.
- disable the non-functional "vdso" code in linux32/amd64,
glibc works fine without it.
- fix a race in the futex code where we could miss a wakeup after
a requeue operation.
- redo futex locking to be a little more efficient.

This patch fixes the NX regression issue observed on amd64 kernels, where
per-page execution right was disabled (therefore leading to the inability
of the kernel to detect fraudulent use of memory mappings marked as not
being executable).

- replace cpu_feature and ci_feature_flags variables by cpu_feature and
ci_feat_val arrays. This makes it cleaner and brings kernel code closer
to the design of cpuctl(8). A warning will be raised for each CPU that
does not expose the same features as the Boot Processor (BP).

- the blacklist of CPU features is now a macro defined in the
specialreg.h header, instead of hardcoding it inside MD initialization
code; fix comments.

- replace checks against CPUID_TSC with the cpu_hascounter() function.

- clean up the code in init_x86_64(), as cpu_feature variables are set
inside cpu_probe().

- use cpu_init_msrs() for i386. It will be eventually used later for NX
feature under i386 PAE kernels.

- remove code that checks for CPUID_NOX in amd64 mptramp.S, this is already
performed by cpu_hatch() through cpu_init_msrs().

- remove cpu_signature and feature_flags members from struct mpbios_proc
(they were never used).

This patch was tested with i386 MONOLITHIC, XEN3PAE_DOM0 and XEN3_DOM0 under
a native i386 host, and amd64 GENERIC, XEN3_DOM0 via QEMU virtual machines.

XXX Should kernel rev be bumped?

XXX A similar patch should be pulled-up for NetBSD-5, hopefully tomorrow.

branches: 1.2.6; 1.2.60; 1.2.82; 1.2.84;
Add a new signature test for linux probe function. We look for a .debuglink
section, which is specific to the Linux dynamic interpeter (yes, Linux
can execute it as a stand alone program)

branches: 1.1.2; 1.1.4; 1.1.10; 1.1.16;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

- Use LINUX32_F_xxx instead of LINUX_F_xxx for compat_linux32.
aarch64 and arm have different values.
- Compile linux32_sys_fadvise64() only if the syscall is required.

branches: 1.1.2; 1.1.10; 1.1.16; 1.1.22;
- Move the BSD to Linux and Linux to BSD termio/termios conversion functions
to a header where they can be shared between COMPAT_LINUX and COMPAT_LINUX32
- Add termios ioctl emulation to COMPAT_LINUX32
- Add the getcwd system call to COMPAT_LINUX32/amd64

That makes Linux's bash working with COMPAT_LINUX32.

linux32_rt_sendsig: Memset zero before copyout.

Not sure if there's any padding here, but it's a pretty big
structure, fairly likely, so let's be rather safe than sorry.

XXX pullup-8
XXX pullup-9
XXX pullup-10

branches: 1.47.4;
Use "stack_t" instead of "struct sigaltstack", as the former is the
newer standardized name. NFC.

sys/compat: Memset zero before copyout.

Just in case of uninitialized padding which would lead to kernel
stack disclosure. If the compiler can prove the memset redundant
then it can optimize it away; otherwise better safe than sorry.

branches: 1.45.2;
Rename

fpu_save_area_clear -> fpu_clear
fpu_save_area_reset -> fpu_sigreset

Clearer, and reduces a future diff. No real functional change.

Disable preemption when setting PCB_COMPAT32, to prevent a context switch
before cpu_fsgs_reload() finishes, otherwise we write garbage in the GDT.
On NetBSD-current it is harmless, however in NetBSD-8 it might cause
panics, because NetBSD-8 uses the old SegRegs model and under this model
we reload %fs and %gs during switches.

branches: 1.43.4;
Include opt_user_ldt.h when needed.

Always mask the 16 bits of the segregs in the trapframe. We don't zero-
extend the uint64_t's when building it, so we're leaking 48 bits of kernel
stack to userland.

Having said that, it appears that I unintentionally fixed most of this
issue in locore.S::rev1.127 - by building the frame with interrupts
disabled, we are implicitly guaranteeing that the structure doesn't get
overwritten by the kernel. Which means, we are leaking to userland data
that comes from userland anyway.

(still other places with this issue, but I'll fix them differently)

Use two separate functions: cpu_segregs32_zero and cpu_segregs64_zero. The
way segment registers work on amd64 will diverge between 32bit and 64bit
LWPs.

Make sure the 32bit LWPs don't have MDL_IRET set. That's not a problem
right now, but will be in the future.

Fix a subtle ring0 escalation vulnerability in amd64, and implement a
mitigation against similar bugs.

The operations on segment registers can generate a page fault if there is
an issue when touching the in-memory gdt. Theoretically, it is never
supposed to happen, since the gdt is mapped correctly. However, in the
kernel we allow the gdt to be resized, and to do that, we allocate the
maximum amount of va needed by it, but only kenter a few pages until we
need more. Moreover, to avoid reloading the gdt each time we grow it, the
'size' field of gdtr is set to the maximum value. All of this means that
if a mov or iretq is done with a segment register whose index hits a page
that has not been kentered, a page fault is sent.

Such a page fault, if received in kernel mode, does not trigger a swapgs
on amd64; in other words, the kernel would be re-entered with the userland
tls.

And there just happens to be a place in compat_linux32 where the index of
%cs is controlled by userland, making it easy to trigger the page fault
and get kernel privileges.

The mitigation simply consists in abandoning the gdt_grow mechanism and
allocating/kentering the maximum size right away, in such a way that no
page fault can be triggered because of segment registers.

branches: 1.38.6;
Remove #if 0 on USER_LDT.

branches: 1.37.2;
Fix argument (does not compile anyway).

branches: 1.36.4; 1.36.6; 1.36.8; 1.36.10; 1.36.14;
Explicitly include x86/fpu.h instead of relying in x86/frame.h including it.

Remove all references to MDL_USEDFPU and deferred fpu initialisation.
The cost of zeroing the save area on exec is minimal.
This stops the FP registers of a random process being used the first
time an lwp uses the fpu.
sendsig_siginfo() and get_mcontext() now unconditionally copy the FP
registers.
I'll remove the double-copy for signal handlers soon.
get_mcontext() might have been leaking kernel memory to userspace - and
may still do so if i386_use_fxsave is false (short copies).

Convert the amd64 build to use x86/cpu_extended_state.h so that the fpu
definitions match those of i386.
Mostly just structure and field renames, in addition:
1) process_xmm_to_s87() and process_s87_to_xmm() moved into
x86/convert_xmm_s87.c so they can be used by amd64's netbsd32 code.
2) The linux signal code simplified to use a structure copy for ths fxsave
data - it matches the hardware definition and won't change.

revert fpu/pcu changes until we figure out what's wrong; they cause random
freezes

Use the MI "pcu" framework for bookkeeping of npx/fpu states on x86.
This reduces the amount of MD code enormously, and makes it easier
to implement support for newer CPU features which require more fpu
state, or for fpu usage by the kernel.
For access to FPU state across CPUs, an xcall kthread is used now
rather than a dedicated IPI.
No user visible changes intended.

branches: 1.31.2; 1.31.4;
Rename MDP_IRET to MDL_IRET since it is an lwp flag, not a proc one.
Add an MDL_COMPAT32 flag to the lwp's md_flags, set it for 32bit lwps
and use it to force 'return to user' with iret (as is done when
MDL_IRET is set).
Split the iret/sysret code paths much later.
Remove all the replicated code for 32bit system calls - which was only
needed so that iret was always used.
frameasm.h for XEN contains '#define swapgs', while XEN probable never
needs swapgs, this is likely to be confusing.
Add a SWAPGS which is a nop on XEN and swapgs otherwise.
(I've not yet checked all the swapgs in files that include frameasm.h)
Simple x86 programs still work.
Hijack 6.99.9 kernel bump (needed for compat32 modules)

The MDP_USEDFPU (amd64 and sh3) and MDP_SSTEP (sh3) are lwp flags not
process ones, rename to MDL_xxx.

branches: 1.29.4; 1.29.10; 1.29.14; 1.29.16;
Refactor ps_strings access. Based on PK_32, write either the normal
version or the 32bit compat layout in execve1. Introduce a new function
copyin_psstrings for reading it back from userland and converting it to
the native layout. Refactor procfs to share most of the code with the
kern.proc_args sysctl handler.

This material is based upon work partially supported by
The NetBSD Foundation under a contract with Joerg Sonnenberger.

move macros for validating fs/gs to segments.h and use them
in the linux32 code as well.

branches: 1.27.2; 1.27.4;
implement the following syscalls for linux32:
truncate64
ftruncate64
profil
ioperm
iopl
setdomainname
modify_ldt
statfs64
fstatfs64

note that iopl(), ioperm() and modify_ldt() just call
the respective 64-bit handlers, which don't do anything yet.

fix debugging build.

Add missing includes to bring the linux_semun type needed by
linux_syscallargs.h.

many changes for COMPAT_LINUX:
- update the linux syscall table for each platform.
- support new-style (NPTL) linux pthreads on all platforms.
clone() with CLONE_THREAD uses 1 process with many LWPs
instead of separate processes.
- move the contents of sys__lwp_setprivate() into a new
lwp_setprivate() and use that everywhere.
- update linux_release[] and linux32_release[] to "2.6.18".
- adjust placement of emul fork/exec/exit hooks as needed
and adjust other emul code to match.
- convert all struct emul definitions to use named initializers.
- change the pid allocator to allow multiple pids to refer to the same proc.
- remove a few fields from struct proc that are no longer needed.
- disable the non-functional "vdso" code in linux32/amd64,
glibc works fine without it.
- fix a race in the futex code where we could miss a wakeup after
a requeue operation.
- redo futex locking to be a little more efficient.

branches: 1.23.2; 1.23.4;
Use lwp_getpcb() in compat code, clean from struct user.

Add native to linux siginfo si_status translation, used on i386 and
amd64.

ansify function definitions

branches: 1.20.2; 1.20.8;
Add native to linux siginfo si_code translation, mostly for negative
values. Adjust amd64 and i386 accordingly, not sure about aother archs
i can't test.

Fix linux32 siginfo si_signo value. Do not convert ksi_signo twice.

Define a PSL_CLEARSIG macro for the psl flags to be cleared on signal delivery
and use it everywhere.

branches: 1.17.2; 1.17.4; 1.17.8;
Merge proc::p_mutex and proc::p_smutex into a single adaptive mutex, since
we no longer need to guard against access from hardware interrupt handlers.

Additionally, if cloning a process with CLONE_SIGHAND, arrange to have the
child process share the parent's lock so that signal state may be kept in
sync. Partially addresses PR kern/37437.

branches: 1.16.6; 1.16.8;
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: 1.15.4;
ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

Remove all the __P

branches: 1.13.2;
- move the save context before the signal reset (Arto Huusko)
- set the sigcontext cr2

branches: 1.12.2;
machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

branches: 1.11.6; 1.11.8; 1.11.12;
rename si_sigval -> si_value to match POSIX RTS.

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: 1.8.2; 1.8.4; 1.8.6;
fix caddr_t lossage

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

Change the process/lwp flags seen by userland via sysctl back to the
P_*/L_* naming convention, and rename the in-kernel flags to avoid
conflict. (P_ -> PK_, L_ -> LW_ ). Add back the (now unused) LSDEAD
constant.

Restores source compatibility with pre-newlock2 tools like ps or top.

Reviewed by Andrew Doran.

branches: 1.5.2;
Fix COMPAT_LINUX32.

Merge newlock2 to head.

adjust_limits takes p, not l 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: 1.1.2; 1.1.10; 1.1.16; 1.1.20; 1.1.22; 1.1.24;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

Remove all the __P

branches: 1.1.2; 1.1.10; 1.1.16; 1.1.22; 1.1.46; 1.1.48; 1.1.54; 1.1.58;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

implement the *at() syscalls.
bring the unimplemented syscall list up to date.

branches: 1.6.16; 1.6.26; 1.6.30;
Make the emulations, exec formats, coredump, NFS, and the NFS server
into modules. By and large this commit:

- shuffles header files and ifdefs
- splits code out where necessary to be modular
- adds module glue for each of the components
- adds/replaces hooks for things that can be installed at runtime

branches: 1.5.6; 1.5.10; 1.5.12; 1.5.16; 1.5.18;
Extract the fcntl64() suppoort from linux_file64.c into linux_fcntl64.c
Unravel some of the knots that caused linux_file64.c to be compiled twice
for an amd64 kernel (once for linux and once for linux32) with different
parts being skipped each time.

compat linux (and linux32) uid16 functions cleanup and fixes.

- Move uid16 functions to their own file linux_uid16.c, included by
needed archs (arm, i386 and m68k).
- Add new MI types linux_{u,g}id16_t.
- Add macros to handle linux_uid16_t and uid_t conversions.
- Add linux_sys_getres{uid,gid}16 syscalls, to fix an overflow with
bad sizes given to copyout when linux_sys_getres{uid,gid} are used.
- Update arm syscall table to use more uid16 functions.

branches: 1.3.6; 1.3.12; 1.3.18; 1.3.22;
include sys/cdefs.h

branches: 1.2.6; 1.2.14;
Merge newlock2 to head.

branches: 1.1.2; 1.1.10; 1.1.16; 1.1.20; 1.1.22;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

Fix defines against multiple inclusion protection (s/I386/AMD64).

branches: 1.8.4; 1.8.18;
Kill a few other unused linux syscall arguments/prototypes
definitions.

Remove syscall prototypes forgotten in previous commit.

Remove unused linux_sys_setresgid16_args/linux_sys_setresuid16_args
definitions.

branches: 1.5.6;
compat linux (and linux32) uid16 functions cleanup and fixes.

- Move uid16 functions to their own file linux_uid16.c, included by
needed archs (arm, i386 and m68k).
- Add new MI types linux_{u,g}id16_t.
- Add macros to handle linux_uid16_t and uid_t conversions.
- Add linux_sys_getres{uid,gid}16 syscalls, to fix an overflow with
bad sizes given to copyout when linux_sys_getres{uid,gid} are used.
- Update arm syscall table to use more uid16 functions.

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: 1.3.16; 1.3.22; 1.3.24; 1.3.28;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.2.6;
Jumbo COMPAT_LINUX/COMPAT_LINUX32 bugfix, with the help of Nicolas Joly
- Fix shmat return value on amd64: it uses no black magic with retval[0]
- Fix integer overflows in sysinfo
- Implement sysinfo, mmap2, sched_getparam, sched_getscheduler, mremap,
and madvise in COMPAT_LINUX32
- Fix improper types used in setgroups16/getgroups16
- Implement mmap2 for COMPAT_LINUX32
- Ifdef debug messages by DEBUG_LINUX

branches: 1.1.2; 1.1.4; 1.1.10; 1.1.16; 1.1.20; 1.1.22;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

Add routines to convert from linux32 to native sigevent_t.

branches: 1.1.8; 1.1.66;
add sigtimedwait support

fix inconsistent names

branches: 1.3.10; 1.3.28;
add sigtimedwait support

branches: 1.2.12;
Fix defines against multiple inclusion protection (s/I386/AMD64).

branches: 1.1.2; 1.1.10; 1.1.16; 1.1.22; 1.1.76; 1.1.92;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

regen

regen

Regen for preadv(2) / pwritev(2).

Regen for eventfd.

Regen for timerfd.

Regen for POSIX timer syscalls.

branches: 1.81.2;
Regen for native futex calls.

regen

Regen

branches: 1.78.8; 1.78.10;
regen

branches: 1.77.4;
descend and regen

branches: 1.76.2;
regen

branches: 1.75.2;
regen

regen

branches: 1.73.2;
Regen for ppoll(2)

Regen for utimes(2).

Regen for pread/pwrite 64bit offset argument.

branches: 1.70.2;
Regen

regen

Regen for dup/dup2/dup3 argument types fix.

branches: 1.67.2; 1.67.4;
regen

regen

branches: 1.65.4; 1.65.6;
regen

add sigtimedwait support

branches: 1.63.4;
Regenerate files to pick up correct RCS Ids. Suggested by Chris Badura.

Add fadvise64 and fadvise64_64 syscalls to compat_linux and compat_linux32.

Regen: XXX: produces errors because of rump changes!

branches: 1.60.2;
regen

regen

branches: 1.58.2; 1.58.4;
Regen for personality(2) update.

Regen for rt_queueinfo addition.

Regen for fstatfs.

Regen for stat/lstat/fstat syscalls.

Regen for siggetmask/sigsetmask.

branches: 1.53.2;
Regen for mincore(2).

Regen for personality(2) addition.

Regen for wait4 update.

Regen for compat 50 update.

Regen to prove I didn't screw up the conversion: purely RCSID changes.

merge christos-time_t

branches: 1.47.2;
Regen for clock_nanosleep.

Regen for netbsd32_caddr_t removal.

Regen for getres{uid,gid} syscalls.

Regen for sched_get_priority_{min,max}.

Regen.

Regen for nanosleep(2) fix.

branches: 1.41.2; 1.41.4;
Regen.

Regen after cleanup.

Regen for rt_sigpending.

branches: 1.38.2;
regen

branches: 1.37.2;
Regen for ipc(2) syscall support.

branches: 1.36.2; 1.36.4; 1.36.6;
Regen for sys_clock_{getres,gettime,settime} syscalls.

Regen for msync(2) support.

branches: 1.34.6;
Regen for mlock/munlock syscalls

Regen for pread/pwrite fixes.

Regen for merging fcntl() and fcntl64().

Regen for pread and pwrite

Regen.

Regen.

Regen for readdir syscall.

Regen for old_uname syscall.

Regen for getpgid.

Regen for getfsuid/setfsgid syscall exchange.

regen

branches: 1.23.2; 1.23.6;
Regen.

regen

Regen for 64-bit linux syscalls removal.

branches: 1.20.2;
regen

Regen for syscalls cleanup.

Regen for chown additions.

branches: 1.17.6; 1.17.8; 1.17.12;
Regen (ftruncate fix).

Regen (statfs support).

branches: 1.15.2; 1.15.4;
fix caddr_t lossage.

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

branches: 1.13.2;
Regen.

Regen (aliases cleanup).

Regen (poll argument fix).

branches: 1.10.4;
Jumbo COMPAT_LINUX/COMPAT_LINUX32 bugfix, with the help of Nicolas Joly
- Fix shmat return value on amd64: it uses no black magic with retval[0]
- Fix integer overflows in sysinfo
- Implement sysinfo, mmap2, sched_getparam, sched_getscheduler, mremap,
and madvise in COMPAT_LINUX32
- Fix improper types used in setgroups16/getgroups16
- Implement mmap2 for COMPAT_LINUX32
- Ifdef debug messages by DEBUG_LINUX

branches: 1.9.2; 1.9.4;
Implement Linux's fdatasync, patch from Nicolas Joly

Fix linux32_sys_setres{uid|gid}: -1 does not means the same thing on i386
and amd64...

typo

Regen.

Regen

- Complete exit_group() implementation. We now maintain a list of Linux
threads in a processes and kill them properly. The code is a bit too
complicated, but I could not find a simplier way of dealing with it

- Change getpid() and getppid() semantics to match what Linux does,
and implement gettid(). In the Linux kernel, threads are implemnted
as plain old processes. A thread group is just a set of processes,
with the parent called leader. Thread ID, which are returned by gettid(),
are just the PID of the plain old processes, and getpid() returns the
PID of the thread group leader.

- Remove struct linux32_emuldata. COMPAT_LINUX32 uses a lot of COMPAT_LINUX
code, where a struct linux_emuldata is assumed. By having distinct emuldata
structure with different sizes and layouts, we caused kernel memory
corruptions.

- Fix setprioriry() and getpriority()

Thanks to Nicolas Joly for tracking down the problem and providing me the
hardware to fix them.

branches: 1.3.2; 1.3.4; 1.3.10; 1.3.14; 1.3.16;
Add getcwd (for real this time), fix dup and dup2

- Move the BSD to Linux and Linux to BSD termio/termios conversion functions
to a header where they can be shared between COMPAT_LINUX and COMPAT_LINUX32
- Add termios ioctl emulation to COMPAT_LINUX32
- Add the getcwd system call to COMPAT_LINUX32/amd64

That makes Linux's bash working with COMPAT_LINUX32.

Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

regen

regen

Regen for preadv(2) / pwritev(2).

Regen for eventfd.

Regen for timerfd.

Regen for POSIX timer syscalls.

branches: 1.81.2;
Regen for native futex calls.

regen

Regen

branches: 1.78.8; 1.78.10;
regen

branches: 1.77.4;
descend and regen

branches: 1.76.2;
regen

branches: 1.75.2;
regen

regen

branches: 1.73.2;
Regen for ppoll(2)

Regen for utimes(2).

Regen for pread/pwrite 64bit offset argument.

branches: 1.70.2;
Regen

regen

Regen for dup/dup2/dup3 argument types fix.

branches: 1.67.2; 1.67.4;
regen

regen

branches: 1.65.4; 1.65.6;
regen

add sigtimedwait support

branches: 1.63.4;
Regenerate files to pick up correct RCS Ids. Suggested by Chris Badura.

Add fadvise64 and fadvise64_64 syscalls to compat_linux and compat_linux32.

Regen: XXX: produces errors because of rump changes!

branches: 1.60.2;
regen

regen

branches: 1.58.2; 1.58.4;
Regen for personality(2) update.

Regen for rt_queueinfo addition.

Regen for fstatfs.

Regen for stat/lstat/fstat syscalls.

Regen for siggetmask/sigsetmask.

branches: 1.53.2;
Regen for mincore(2).

Regen for personality(2) addition.

Regen for wait4 update.

Regen for compat 50 update.

Regen to prove I didn't screw up the conversion: purely RCSID changes.

merge christos-time_t

branches: 1.47.2;
Regen for clock_nanosleep.

Regen for netbsd32_caddr_t removal.

Regen for getres{uid,gid} syscalls.

Regen for sched_get_priority_{min,max}.

Regen.

Regen for nanosleep(2) fix.

branches: 1.41.2; 1.41.4;
Regen.

Regen after cleanup.

Regen for rt_sigpending.

branches: 1.38.2;
regen

branches: 1.37.2;
Regen for ipc(2) syscall support.

branches: 1.36.2; 1.36.4; 1.36.6;
Regen for sys_clock_{getres,gettime,settime} syscalls.

Regen for msync(2) support.

branches: 1.34.6;
Regen for mlock/munlock syscalls

Regen for pread/pwrite fixes.

Regen for merging fcntl() and fcntl64().

Regen for pread and pwrite

Regen.

Regen.

Regen for readdir syscall.

Regen for old_uname syscall.

Regen for getpgid.

Regen for getfsuid/setfsgid syscall exchange.

regen

branches: 1.23.2; 1.23.6;
Regen.

regen

Regen for 64-bit linux syscalls removal.

branches: 1.20.2;
regen

Regen for syscalls cleanup.

Regen for chown additions.

branches: 1.17.6; 1.17.8; 1.17.12;
Regen (ftruncate fix).

Regen (statfs support).

branches: 1.15.2; 1.15.4;
fix caddr_t lossage.

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

branches: 1.13.2;
Regen.

Regen (aliases cleanup).

Regen (poll argument fix).

branches: 1.10.4;
Jumbo COMPAT_LINUX/COMPAT_LINUX32 bugfix, with the help of Nicolas Joly
- Fix shmat return value on amd64: it uses no black magic with retval[0]
- Fix integer overflows in sysinfo
- Implement sysinfo, mmap2, sched_getparam, sched_getscheduler, mremap,
and madvise in COMPAT_LINUX32
- Fix improper types used in setgroups16/getgroups16
- Implement mmap2 for COMPAT_LINUX32
- Ifdef debug messages by DEBUG_LINUX

branches: 1.9.2; 1.9.4;
Implement Linux's fdatasync, patch from Nicolas Joly

Fix linux32_sys_setres{uid|gid}: -1 does not means the same thing on i386
and amd64...

typo

Regen.

Regen

- Complete exit_group() implementation. We now maintain a list of Linux
threads in a processes and kill them properly. The code is a bit too
complicated, but I could not find a simplier way of dealing with it

- Change getpid() and getppid() semantics to match what Linux does,
and implement gettid(). In the Linux kernel, threads are implemnted
as plain old processes. A thread group is just a set of processes,
with the parent called leader. Thread ID, which are returned by gettid(),
are just the PID of the plain old processes, and getpid() returns the
PID of the thread group leader.

- Remove struct linux32_emuldata. COMPAT_LINUX32 uses a lot of COMPAT_LINUX
code, where a struct linux_emuldata is assumed. By having distinct emuldata
structure with different sizes and layouts, we caused kernel memory
corruptions.

- Fix setprioriry() and getpriority()

Thanks to Nicolas Joly for tracking down the problem and providing me the
hardware to fix them.

branches: 1.3.2; 1.3.4; 1.3.10; 1.3.14; 1.3.16;
Add getcwd (for real this time), fix dup and dup2

- Move the BSD to Linux and Linux to BSD termio/termios conversion functions
to a header where they can be shared between COMPAT_LINUX and COMPAT_LINUX32
- Add termios ioctl emulation to COMPAT_LINUX32
- Add the getcwd system call to COMPAT_LINUX32/amd64

That makes Linux's bash working with COMPAT_LINUX32.

Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

regen

regen

Regen for preadv(2) / pwritev(2).

Regen for eventfd.

Regen for timerfd.

Regen for POSIX timer syscalls.

branches: 1.81.2;
Regen for native futex calls.

regen

Regen

branches: 1.78.8; 1.78.10;
regen

branches: 1.77.4;
descend and regen

branches: 1.76.2;
regen

branches: 1.75.2;
regen

regen

branches: 1.73.2;
Regen for ppoll(2)

Regen for utimes(2).

Regen for pread/pwrite 64bit offset argument.

branches: 1.70.2;
Regen

regen

Regen for dup/dup2/dup3 argument types fix.

branches: 1.67.2; 1.67.4;
regen

regen

branches: 1.65.4; 1.65.6;
regen

add sigtimedwait support

branches: 1.63.4;
Regenerate files to pick up correct RCS Ids. Suggested by Chris Badura.

Add fadvise64 and fadvise64_64 syscalls to compat_linux and compat_linux32.

Regen: XXX: produces errors because of rump changes!

branches: 1.60.2;
regen

regen

branches: 1.58.2; 1.58.4;
Regen for personality(2) update.

Regen for rt_queueinfo addition.

Regen for fstatfs.

Regen for stat/lstat/fstat syscalls.

Regen for siggetmask/sigsetmask.

branches: 1.53.2;
Regen for mincore(2).

Regen for personality(2) addition.

Regen for wait4 update.

Regen for compat 50 update.

Regen to prove I didn't screw up the conversion: purely RCSID changes.

merge christos-time_t

branches: 1.47.2;
Regen for clock_nanosleep.

Regen for netbsd32_caddr_t removal.

Regen for getres{uid,gid} syscalls.

Regen for sched_get_priority_{min,max}.

Regen.

Regen for nanosleep(2) fix.

branches: 1.41.2; 1.41.4;
Regen.

Regen after cleanup.

Regen for rt_sigpending.

branches: 1.38.2;
regen

branches: 1.37.2;
Regen for ipc(2) syscall support.

branches: 1.36.2; 1.36.4; 1.36.6;
Regen for sys_clock_{getres,gettime,settime} syscalls.

Regen for msync(2) support.

branches: 1.34.6;
Regen for mlock/munlock syscalls

Regen for pread/pwrite fixes.

Regen for merging fcntl() and fcntl64().

Regen for pread and pwrite

Regen.

Regen.

Regen for readdir syscall.

Regen for old_uname syscall.

Regen for getpgid.

Regen for getfsuid/setfsgid syscall exchange.

regen

branches: 1.23.2; 1.23.6;
Regen.

regen

Regen for 64-bit linux syscalls removal.

branches: 1.20.2;
regen

Regen for syscalls cleanup.

Regen for chown additions.

branches: 1.17.6; 1.17.8; 1.17.12;
Regen (ftruncate fix).

Regen (statfs support).

branches: 1.15.2; 1.15.4;
fix caddr_t lossage.

branches: 1.14.2;
Regen.

Merge newlock2 to head.

Regen (aliases cleanup).

Regen (poll argument fix).

branches: 1.10.4;
Jumbo COMPAT_LINUX/COMPAT_LINUX32 bugfix, with the help of Nicolas Joly
- Fix shmat return value on amd64: it uses no black magic with retval[0]
- Fix integer overflows in sysinfo
- Implement sysinfo, mmap2, sched_getparam, sched_getscheduler, mremap,
and madvise in COMPAT_LINUX32
- Fix improper types used in setgroups16/getgroups16
- Implement mmap2 for COMPAT_LINUX32
- Ifdef debug messages by DEBUG_LINUX

branches: 1.9.2; 1.9.4;
Implement Linux's fdatasync, patch from Nicolas Joly

Fix linux32_sys_setres{uid|gid}: -1 does not means the same thing on i386
and amd64...

typo

Regen.

Regen

- Complete exit_group() implementation. We now maintain a list of Linux
threads in a processes and kill them properly. The code is a bit too
complicated, but I could not find a simplier way of dealing with it

- Change getpid() and getppid() semantics to match what Linux does,
and implement gettid(). In the Linux kernel, threads are implemnted
as plain old processes. A thread group is just a set of processes,
with the parent called leader. Thread ID, which are returned by gettid(),
are just the PID of the plain old processes, and getpid() returns the
PID of the thread group leader.

- Remove struct linux32_emuldata. COMPAT_LINUX32 uses a lot of COMPAT_LINUX
code, where a struct linux_emuldata is assumed. By having distinct emuldata
structure with different sizes and layouts, we caused kernel memory
corruptions.

- Fix setprioriry() and getpriority()

Thanks to Nicolas Joly for tracking down the problem and providing me the
hardware to fix them.

branches: 1.3.2; 1.3.4; 1.3.10; 1.3.14; 1.3.16;
Add getcwd (for real this time), fix dup and dup2

- Move the BSD to Linux and Linux to BSD termio/termios conversion functions
to a header where they can be shared between COMPAT_LINUX and COMPAT_LINUX32
- Add termios ioctl emulation to COMPAT_LINUX32
- Add the getcwd system call to COMPAT_LINUX32/amd64

That makes Linux's bash working with COMPAT_LINUX32.

Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

regen

regen

Regen for preadv(2) / pwritev(2).

Regen for eventfd.

Regen for timerfd.

Regen for POSIX timer syscalls.

branches: 1.81.2;
Regen for native futex calls.

regen

Regen

branches: 1.78.8; 1.78.10;
regen

branches: 1.77.4;
descend and regen

branches: 1.76.2;
regen

branches: 1.75.2;
regen

regen

branches: 1.73.2;
Regen for ppoll(2)

Regen for utimes(2).

Regen for pread/pwrite 64bit offset argument.

branches: 1.70.2;
Regen

regen

Regen for dup/dup2/dup3 argument types fix.

branches: 1.67.2; 1.67.4;
regen

regen

branches: 1.65.4; 1.65.6;
regen

add sigtimedwait support

branches: 1.63.4;
Regenerate files to pick up correct RCS Ids. Suggested by Chris Badura.

Add fadvise64 and fadvise64_64 syscalls to compat_linux and compat_linux32.

Regen: XXX: produces errors because of rump changes!

branches: 1.60.2;
regen

regen

branches: 1.58.2; 1.58.4;
Regen for personality(2) update.

Regen for rt_queueinfo addition.

Regen for fstatfs.

Regen for stat/lstat/fstat syscalls.

Regen for siggetmask/sigsetmask.

branches: 1.53.2;
Regen for mincore(2).

Regen for personality(2) addition.

Regen for wait4 update.

Regen for compat 50 update.

Regen to prove I didn't screw up the conversion: purely RCSID changes.

merge christos-time_t

branches: 1.47.2;
Regen for clock_nanosleep.

Regen for netbsd32_caddr_t removal.

Regen for getres{uid,gid} syscalls.

Regen for sched_get_priority_{min,max}.

Regen.

Regen for nanosleep(2) fix.

branches: 1.41.2; 1.41.4;
Regen.

Regen after cleanup.

Regen for rt_sigpending.

branches: 1.38.2;
regen

branches: 1.37.2;
Regen for ipc(2) syscall support.

branches: 1.36.2; 1.36.4; 1.36.6;
Regen for sys_clock_{getres,gettime,settime} syscalls.

Regen for msync(2) support.

branches: 1.34.6;
Regen for mlock/munlock syscalls

Regen for pread/pwrite fixes.

Regen for merging fcntl() and fcntl64().

Regen for pread and pwrite

Regen.

Regen.

Regen for readdir syscall.

Regen for old_uname syscall.

Regen for getpgid.

Regen for getfsuid/setfsgid syscall exchange.

regen

branches: 1.23.2; 1.23.6;
Regen.

regen

Regen for 64-bit linux syscalls removal.

branches: 1.20.2;
regen

Regen for syscalls cleanup.

Regen for chown additions.

branches: 1.17.6; 1.17.8; 1.17.12;
Regen (ftruncate fix).

Regen (statfs support).

branches: 1.15.2; 1.15.4;
fix caddr_t lossage.

branches: 1.14.2;
Regen.

Merge newlock2 to head.

Regen (aliases cleanup).

Regen (poll argument fix).

branches: 1.10.4;
Jumbo COMPAT_LINUX/COMPAT_LINUX32 bugfix, with the help of Nicolas Joly
- Fix shmat return value on amd64: it uses no black magic with retval[0]
- Fix integer overflows in sysinfo
- Implement sysinfo, mmap2, sched_getparam, sched_getscheduler, mremap,
and madvise in COMPAT_LINUX32
- Fix improper types used in setgroups16/getgroups16
- Implement mmap2 for COMPAT_LINUX32
- Ifdef debug messages by DEBUG_LINUX

branches: 1.9.2; 1.9.4;
Implement Linux's fdatasync, patch from Nicolas Joly

Fix linux32_sys_setres{uid|gid}: -1 does not means the same thing on i386
and amd64...

typo

Regen.

Regen

- Complete exit_group() implementation. We now maintain a list of Linux
threads in a processes and kill them properly. The code is a bit too
complicated, but I could not find a simplier way of dealing with it

- Change getpid() and getppid() semantics to match what Linux does,
and implement gettid(). In the Linux kernel, threads are implemnted
as plain old processes. A thread group is just a set of processes,
with the parent called leader. Thread ID, which are returned by gettid(),
are just the PID of the plain old processes, and getpid() returns the
PID of the thread group leader.

- Remove struct linux32_emuldata. COMPAT_LINUX32 uses a lot of COMPAT_LINUX
code, where a struct linux_emuldata is assumed. By having distinct emuldata
structure with different sizes and layouts, we caused kernel memory
corruptions.

- Fix setprioriry() and getpriority()

Thanks to Nicolas Joly for tracking down the problem and providing me the
hardware to fix them.

branches: 1.3.2; 1.3.4; 1.3.10; 1.3.14; 1.3.16;
Add getcwd (for real this time), fix dup and dup2

- Move the BSD to Linux and Linux to BSD termio/termios conversion functions
to a header where they can be shared between COMPAT_LINUX and COMPAT_LINUX32
- Add termios ioctl emulation to COMPAT_LINUX32
- Add the getcwd system call to COMPAT_LINUX32/amd64

That makes Linux's bash working with COMPAT_LINUX32.

Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

regen

regen

Regen for preadv(2) / pwritev(2).

Regen for eventfd.

Regen for timerfd.

Regen for POSIX timer syscalls.

branches: 1.8.2;
Regen for native futex calls.

regen

Regen

branches: 1.5.8; 1.5.10; 1.5.12;
regen

branches: 1.4.4;
descend and regen

branches: 1.3.2;
regen

branches: 1.2.2; 1.2.4;
regen

regen

Sync with recent compat linux termios changes.

branches: 1.1.2; 1.1.10; 1.1.16; 1.1.22; 1.1.28; 1.1.32; 1.1.34; 1.1.36;
- Move the BSD to Linux and Linux to BSD termio/termios conversion functions
to a header where they can be shared between COMPAT_LINUX and COMPAT_LINUX32
- Add termios ioctl emulation to COMPAT_LINUX32
- Add the getcwd system call to COMPAT_LINUX32/amd64

That makes Linux's bash working with COMPAT_LINUX32.

many changes for COMPAT_LINUX:
- update the linux syscall table for each platform.
- support new-style (NPTL) linux pthreads on all platforms.
clone() with CLONE_THREAD uses 1 process with many LWPs
instead of separate processes.
- move the contents of sys__lwp_setprivate() into a new
lwp_setprivate() and use that everywhere.
- update linux_release[] and linux32_release[] to "2.6.18".
- adjust placement of emul fork/exec/exit hooks as needed
and adjust other emul code to match.
- convert all struct emul definitions to use named initializers.
- change the pid allocator to allow multiple pids to refer to the same proc.
- remove a few fields from struct proc that are no longer needed.
- disable the non-functional "vdso" code in linux32/amd64,
glibc works fine without it.
- fix a race in the futex code where we could miss a wakeup after
a requeue operation.
- redo futex locking to be a little more efficient.

branches: 1.6.2; 1.6.4;
Fix defines against multiple inclusion protection (s/I386/AMD64).

branches: 1.5.8;
Make linux32 getdents(2) do its own job instead of calling the
corresponding compat linux function, where struct dirent members types
differs.

branches: 1.4.6; 1.4.10; 1.4.12; 1.4.16;
Convert many of the uses of __attribute__ to equivalent
__packed, __unused and __dead macros from cdefs.h

branches: 1.3.10; 1.3.16; 1.3.18; 1.3.22;
Enable stat/stat64 nsec time support, for amd64 compat linux/linux32.

branches: 1.2.6; 1.2.10; 1.2.12;
Jumbo COMPAT_LINUX/COMPAT_LINUX32 bugfix, with the help of Nicolas Joly
- Fix shmat return value on amd64: it uses no black magic with retval[0]
- Fix integer overflows in sysinfo
- Implement sysinfo, mmap2, sched_getparam, sched_getscheduler, mremap,
and madvise in COMPAT_LINUX32
- Fix improper types used in setgroups16/getgroups16
- Implement mmap2 for COMPAT_LINUX32
- Ifdef debug messages by DEBUG_LINUX

branches: 1.1.2; 1.1.4; 1.1.10; 1.1.16; 1.1.20; 1.1.22;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

Add systrace output file

branches: 1.1.2; 1.1.10; 1.1.16; 1.1.22; 1.1.122; 1.1.142;
Add initial (but unfinished) COMPAT_LINUX32 for amd64. This is good enough so
that the i386 license manager part of amd64 version of Fluent works.

While I'm here, add SysV IPC to COMPAT_LINUX/amd64

add prlimit64(2) syscall to COMPAT_LINUX and COMPAT_LINUX32

Add pselect6(2) system call to COMPAT_LINUX32

Add preadv(2) and pwritev(2) system calls to COMPAT_LINUX and COMPAT_LINUX32.

Add the eventfd system calls to COMPAT_LINUX and COMPAT_LINUX32.

Add the timerfd syscalls to COMPAT_LINUX and COMPAT_LINUX32.

Add the POSIX timer syscalls (timer_create(), timer_settime(), timer_gettime(),
timer_getoverrun(), and timer_delete()) to COMPAT_LINUX and COMPAT_LINUX32.

branches: 1.71.2;
Add a NetBSD native futex implementation, mostly written by riastradh@.
Map the COMPAT_LINUX futex calls to the native ones.

add dummy implementation of linux fallocate() which just returns EOPNOTSUPP;
this is needed so that glibc falls back to emulation and apps behaving
properly, since EOPNOTSUPP is a documented and expected return code, but
ENOSYS is not

right now there are no filesystems in NetBSD tree supporting the fallocate
VOP, so no point trying to map this to a native call

supposed to help with problem reported in
https://mail-index.netbsd.org/tech-kern/2019/11/03/msg025641.html

branches: 1.69.18;
fix inconsistent names

branches: 1.68.2;
Add ppoll(2) for compat linux32.

Add utimes(2) support.

Fix pread/pwrite syscalls which need a 64bit offset argument.

branches: 1.65.2;
Fix extended attribute syscalls to use the proper types and call their netbsd32
counterparts for now.

implement the *at() syscalls.
bring the unimplemented syscall list up to date.

Fix dup/dup2/dup3 argument types (u_int -> int).

branches: 1.62.2; 1.62.4;
add xattr stubs

Fix rt_sigtimedwait():
It is wishful thinking that:
1. declaring a 32 bit syscall with 64 bit pointers
2. passing a struct with 32 bit pointers to a 64 bit function
is going to work.

branches: 1.60.4; 1.60.6;
add sigtimedwait support

branches: 1.59.4;
Add fadvise64 and fadvise64_64 syscalls to compat_linux and compat_linux32.

add pipe2 and dup3

branches: 1.57.2;
implement the following syscalls for linux32:
truncate64
ftruncate64
profil
ioperm
iopl
setdomainname
modify_ldt
statfs64
fstatfs64

note that iopl(), ioperm() and modify_ldt() just call
the respective 64-bit handlers, which don't do anything yet.

many changes for COMPAT_LINUX:
- update the linux syscall table for each platform.
- support new-style (NPTL) linux pthreads on all platforms.
clone() with CLONE_THREAD uses 1 process with many LWPs
instead of separate processes.
- move the contents of sys__lwp_setprivate() into a new
lwp_setprivate() and use that everywhere.
- update linux_release[] and linux32_release[] to "2.6.18".
- adjust placement of emul fork/exec/exit hooks as needed
and adjust other emul code to match.
- convert all struct emul definitions to use named initializers.
- change the pid allocator to allow multiple pids to refer to the same proc.
- remove a few fields from struct proc that are no longer needed.
- disable the non-functional "vdso" code in linux32/amd64,
glibc works fine without it.
- fix a race in the futex code where we could miss a wakeup after
a requeue operation.
- redo futex locking to be a little more efficient.

branches: 1.55.2; 1.55.4;
Update personality(2) to match Linux definition where the argument is an
unsigned long.

Add rt_queueinfo(2) support.

Add fstatfs syscall.

Add stat/lstat/fstat syscalls.

Add siggetmask/sigsetmask syscalls.

branches: 1.50.2;
Add mincore syscall.

Add basic support for linux32 personality(2) syscall.

Convert linux/linux32 wait(4) to use a compat50 rusage structure.

Update some syscalls that now needs compat50 timeval structure.

Convert the syscalls.master to a format from which it is easier
to parse and generate the compat name and basename (e.g. __stat50
and stat). Use this to autogenerate __RENAME()'s to the rump_syscalls
header so that they can be called e.g. rump_sys_socket() instead
of rump_sys___socket30().

merge christos-time_t

branches: 1.44.2;
Add clock_nanosleep syscall.

Cleanup; kill netbsd32_caddr_t use.

Add getres{uid,gid} syscalls.

Add sched_get_priority_{min,max} syscalls.

Make the emulations, exec formats, coredump, NFS, and the NFS server
into modules. By and large this commit:

- shuffles header files and ifdefs
- splits code out where necessary to be modular
- adds module glue for each of the components
- adds/replaces hooks for things that can be installed at runtime

Fix nanosleep(2) on 64-bit archs. Do not call native nanosleep
syscall, but rather a modified version the will take care of `struct
timespec' conversions.

branches: 1.38.2; 1.38.4;
Cleanup. Reduce diffs against netbsd32 syscalls.master.
- Remove const keyword for pointer types.
- Update some argument types.

Kill a few linux32 syscalls identical to netbsd32 ones.
No functional changes expected.

Add rt_sigpending syscall.

branches: 1.35.2;
an attempt at ptrace32

branches: 1.34.2;
Add compat linux32 ipc(2) syscall support, for shared memory and
semaphores.

branches: 1.33.2; 1.33.4; 1.33.6;
Add compat linux32 sys_clock_{getres,gettime,settime} syscalls.

Add msync(2) syscall.

branches: 1.31.6;
Add mlock/munlock syscalls

pread/pwrite fixes: use SCARG_P32 to access pointers, and update
syscalls definitions.

Use the same function to implement linux32_sys_fcntl() and linux_sys_fcntl64().
A rather excessive amount of 'appending 64' to names seems to have happened
when linux won support for files > 4G.
technically the linux32_sys_fcntl() function should error the 64bit file
locking requests - but life is too short.

Impletemt pread() and pwrite().

compat linux (and linux32) uid16 functions cleanup and fixes.

- Move uid16 functions to their own file linux_uid16.c, included by
needed archs (arm, i386 and m68k).
- Add new MI types linux_{u,g}id16_t.
- Add macros to handle linux_uid16_t and uid_t conversions.
- Add linux_sys_getres{uid,gid}16 syscalls, to fix an overflow with
bad sizes given to copyout when linux_sys_getres{uid,gid} are used.
- Update arm syscall table to use more uid16 functions.

Remove wrong linux32_sys_mmap2_args define.

Add readdir syscall.

Add old_uname syscall.

Add getpgid syscall.

- Fix setfsuid to return uid on success.
- Replace getfsuid, which never existed on Linux, by correct setfsgid
syscall.

ok by christos and dsl.

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: 1.20.2; 1.20.6;
Update, for linux_sys_readlink() removal.

Remove remaining 64-bit compat linux syscalls linux_sys_xxx() (except
for ones without arguments), and replace them by their 32-bit
equivalent linux32_sys_xxxx().

branches: 1.18.2;
This file must use the netbsd32_xxx() system calls, not the sys_xxx() ones.
The latter actually function (due to luck) for calls with one argument,
but will fail badly if more than one is required.
Noticed as an error in the ktrace outut by Nicolas Joly, reported on
tech-kern.

compat linux32 syscalls cleanup.

With stackgap and CHECK_ALT_xxx removal, some linux32 and netbsd32
syscalls are now identical.
To avoid code duplication, remove the linux32 definition and use the
netbsd32 one (no functional change).

Add missing chown's syscalls family members.
This makes chown(1)/chgrp(1) works under compat linux32.

Problem reported and fix tested by Arto Huusko. Thanks.

branches: 1.15.6; 1.15.8; 1.15.12;
Fix ftruncate syscall. Do not use compat_43_sys_ftruncate, but
compat_43_netbsd32_oftruncate instead.

- Add compat amd64 linux32 statfs support, adapted from PR/35956.
- Move bsd_to_linux_statfs() function to its own file to be shared
between both linux compats.

ok by manu.

branches: 1.13.2; 1.13.4;
fix caddr_t lossage.

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

branches: 1.11.2;
Add support for a few syscalls:
setfsuid16/getfsuid16
setfsuid/getfsuid
sched_yield

ok by manu

Merge newlock2 to head.

Remove some aliases, for syscalls that use their netbsd32 equivalent.
This makes the ktrace output more consistent.

ok by manu.

Use netbsd32_pollfdp_t instead of wrong `struct pollfd *'.

ok by manu.

branches: 1.7.4;
Jumbo COMPAT_LINUX/COMPAT_LINUX32 bugfix, with the help of Nicolas Joly
- Fix shmat return value on amd64: it uses no black magic with retval[0]
- Fix integer overflows in sysinfo
- Implement sysinfo, mmap2, sched_getparam, sched_getscheduler, mremap,
and madvise in COMPAT_LINUX32
- Fix improper types used in setgroups16/getgroups16
- Implement mmap2 for COMPAT_LINUX32
- Ifdef debug messages by DEBUG_LINUX

branches: 1.6.2; 1.6.4;
Implement Linux's fdatasync, patch from Nicolas Joly

Fix linux32_sys_setres{uid|gid}: -1 does not means the same thing on i386
and amd64...