use new bsd.syscall.mk

branches: 1.5.110; 1.5.120; 1.5.126;
merge ktrace-lwp.

make this rebuild generated files by default

branches: 1.3.8; 1.3.10;
We have CVS; there is no reason to make .bak files when generating the
syscall tables.

Use ${HOST_SH} instead of `sh'.

If necessary, pull in <bsd.sys.mk> to get the definition of HOST_SH;
Makefiles that pull in one of (most of) <bsd.*.mk> will get this anyway.

branches: 1.1.2; 1.1.64;
Give every emulation its own Makefile for the syscall table.

Merge the [pgoyette-compat] branch

branches: 1.6.18; 1.6.20;
Define compat modules (but without dependencies yet).

branches: 1.5.26;
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: 1.4.122; 1.4.126; 1.4.132; 1.4.136;
split ecoff specific code to separate file ultrix_exec_ecoff.c

branches: 1.3.30;
Add '/emul/ultrix' pathname processing to Ultrix emulation, and move
Ultrix syscalls that require that processing out of ultrix_misc.c
to ultrix_pathname.c.

Add emulation of Ultrix select: before calling native sys_select(),
limit the number of FDs to select on to the maximum supported by NetBSD --
which is as many FDs as the emul_ultrix process can have open, anyway.

Add emulation of Ultrix getmnt(2) in ultrix_fs.c

Add partial emulation of Ultrix tty ioctl()s in ultrix_ioctl.c, derived
from compat/sunos/sunos_ioctl.c. Ultrix libc's ``isatty()'' now works
in compat_emul processes.

Add common file lists, similar to what the other emulation modules use.

Obsolete; use the one in /sys/kern

new sysent version.

fix a botch, and gen syscall files

fix up for new ID format, and consistency

New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD'

much works but untested w/new fs. expect more tomorrow

first swipe at ultrix compat. expect many bug fixes. very related to compat/sunos

set nsysent to 512 (oh well, just three syscalls too many for 256)

branches: 1.3.20;
remove compat_xxx dependencies where they don't belong

This doesn't actually use COMPAT_10.

changes for new sysent structure (from J. Stone)

The compat_09_{get,set}domainname() syscalls should not be defined
based on existence of COMPAT_09. Make them modular instead, and
reference the compat_09 module.

Merge the [pgoyette-compat] branch

branches: 1.56.2; 1.56.4;
Revert vadvise(2) removal

This system call was used in legacy Lisp code, that was inherited to modern
age and still compiled against supported compat layers (e.g. in clisp,
oaklisp, Franz Lisp).

It used to instruct the kernel about paging policy (G/C aware, flush etc).

Newly compiled code (assuming that it will detect vadvise()) will use the
libc stub for vadvise(). The headers for this interface are gone.

vadvise(2) could be marked as COMPAT_80, but as long as we support ultrix,
sunos or aout68k ABI, don't bother with this.

Requested by <mrg>

compat/ultrix: Drop SYS_vadvise

The (o)vadvise syscall is dummy since the beginning of NetBSD.

Sponsored by <The NetBSD Foundation>

compat/ultrix: Drop SYS_sbrk

sbrk - change data segment size

This syscall is dummy since the inception of the project.

Sponsored by <The NetBSD Foundation>

compat ultrix: Drop the sstk(2) syscall

sstk(2) has never been implemented by the NetBSD kernel.

Sponsored by <The NetBSD Foundation>

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

branches: 1.51.10; 1.51.20; 1.51.24;
Kill fs_nfs.h and #ifdef NFS by making getfh() support unconditional
and nfssvc unsupport unconditional. nfs server was just a fancy
NOP anyway for all except Ultrix. I know I'm boring but I couldn't
imagine why someone would want to run an Ultrix nfs server (and I
also doubt that it would work anymore with all the changes to fs
exporting etc).

branches: 1.50.4;
Adapt to the state after the recent time_t change.
Type changes:
timeval -> timeval50
itimerval -> itimerval50
rusage -> rusage50
and use of the compat_50 calls where appropriate.
Untested, but at least it builds.

Discussed with christos@

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().

UNIMPL police (two mount syscalls with the same signature?!?)

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: 1.46.2; 1.46.4;
include <sys/sched.h> for cpuset_t

branches: 1.45.2; 1.45.4; 1.45.6;
-SYCALL_MPSAFE

branches: 1.44.36; 1.44.38;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.43.2;
Merge newlock2 to head.

branches: 1.42.4;
use the COMPAT_30 getfh.

version the socket(2) syscall. for compat30 socket, we use
EPROTONOSUPPORT instead of EAFNOSUPPORT.

from pavel@ with a little bit of clean up from myself.

XXX: netbsd32 (and perhaps other emulations) should be able
XXX: to call the standard socket calls for this i think, but
XXX: revisit this at another time.

branches: 1.40.4; 1.40.8; 1.40.16;
merge ktrace-lwp.

branches: 1.39.4;
nuke trailing whitespace

branches: 1.38.2; 1.38.10; 1.38.12;
Merge the nathanw_sa branch.

use _KERNEL_OPT.

branches: 1.36.2;
getpid(2) is MP-safe.

Add the %% separators.

Add the %% separators.

LKMify

branches: 1.32.2;
emulate fcntl(F_SETLK) & Co.
(seti@home works now:-)

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

branches: 1.30.2; 1.30.4;
const poisoning and CHECK_ALT_CREAT fixes.

remove compat_xxx dependencies where they don't belong

Defopt COMPAT_43

Use a private implementation of sys_sigvec(). Ultrix uses an sv_flags bit
unknown to NetBSD and sigaction1() does (now?) complain about it.

Make Ultrix emulation private functions for sigreturn and sigsuspend
because the NetBSD implementation differs now.

defopt NFSSERVER

Include the NFS option header.

Use sys___posix_{chown,fchown}() instead of sys_{chown,fchown}().

ostat -> stat43

Use compat_12_sys_swapon().

Emulate RISC Ultrix cacheflush() and cachectl() syscalls on mips.

Declare ultrix_sys_symshs(). Ultrix uses the standard (BRL?) hack to
implement sysV shm using one system call.

branches: 1.18.2;
NFSCLIENT -> NFS

branches: 1.17.2;
Define execv() and execve() consistently across emulations.
Do path name translation.

Catch up with setre[ug]id() changes.

branches: 1.15.4;
Add '/emul/ultrix' pathname processing to Ultrix emulation, and move
Ultrix syscalls that require that processing out of ultrix_misc.c
to ultrix_pathname.c.

Add emulation of ultrix mount(2). Sufficient to NFS-mount filesystems
using a NetBSD kernel in an ultrix root filesystem.

Move wait emulation to the old (v7) wait syscall number, as that's
what the Ultrix ufs_mount binary uses.

Fix ultrix_sys_select() entry.

Add emulation of Ultrix select: before calling native sys_select(),
limit the number of FDs to select on to the maximum supported by NetBSD --
which is as many FDs as the emul_ultrix process can have open, anyway.

Add emulation of Ultrix getmnt(2) in ultrix_fs.c

Add partial emulation of Ultrix tty ioctl()s in ultrix_ioctl.c, derived
from compat/sunos/sunos_ioctl.c. Ultrix libc's ``isatty()'' now works
in compat_emul processes.

Prefix names of system call implementation functions with `sys_'.

Clear up name conflict between Ultrix syscall 103 and 139.

Fix up some incompatibilities and some indentation botches

fixed typo

added sigreturn

changes for new sysent structure (from J. Stone)

ultrix_{get,set}info from Arne H Juul <arnej@dsl.unit.no>

branches: 1.4.2;
New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD'

update for getdtablesize change, and track compat_sunos

much works but untested w/new fs. expect more tomorrow

first swipe at ultrix compat. expect many bug fixes. very related to compat/sunos

Remove clause 3 and 4 leftovers from TNF licenses in more sources.

Confirmed by martin@ in PR/54760.

branches: 1.6.68; 1.6.72;
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: 1.5.70; 1.5.74; 1.5.80; 1.5.84;
merge ktrace-lwp.

branches: 1.4.12;
ANSIfy, some KNF.

branches: 1.3.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Fix 'struct lwp *' lossage.

branches: 1.1.2;
restructure struct emul and execsw, in preparation to make emulations LKMable:
* move all exec-type specific information from struct emul to execsw[] and
provide single struct emul per emulation
* elf:
- kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry
per emulation and contains pointer to respective probe function
- interp is allocated via MALLOC() rather than on stack
- elf_args structure is allocated via MALLOC() rather than malloc()
* ecoff: the per-emulation hooks moved from alpha and mips specific code
to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per
emulation supporting ecoff with appropriate probe function
* the makecmds/probe functions don't set emulation, pointer to emulation is
part of appropriate execsw[] entry
* constify couple of structures

merge ktrace-lwp.

branches: 1.8.4;
nuke trailing whitespace

branches: 1.7.4; 1.7.6;
ANSIfy, some KNF.

Uppercase CPU, plural is CPUs.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.4.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Fix 'struct lwp *' lossage.

add RCSIDs (including regeneration of files as appropriate)

branches: 1.1.2; 1.1.4; 1.1.6;
split ecoff specific code to separate file ultrix_exec_ecoff.c

Merge from matt-nb5-mips64

branches: 1.1.2; 1.1.12; 1.1.142; 1.1.162;
emulate fcntl(F_SETLK) & Co.
(seti@home works now:-)

s/retrys/retries/ in comments.

s/parition/partition/

Fix uninitialized pointer, found by Mootja. Not a surprise in untested
code.

branches: 1.57.4;
Switch ultrix_sys_getmnt() to mountlist iterator.
Really skip "start" items instead of a useless loop.
Compile tested only.

branches: 1.56.2; 1.56.4;
Change do_sys_mount() so that it only takes as argument the type of the
drive instead of its associated vfsops. Makes it more friendly, and allows
compat binaries to autoload VFS modules if needed.

sent on tech-kern@, ok christos@

Unused inits (harmless).

Found by Brainy.

branches: 1.54.6;
Change the queue.3 *_END(&head) macros to NULL. Since we don't have CIRCLEQ
anymore, all the macros expand to NULL anyway, so this improves readability.
Requested by rmind@

fix previous, list ends in NULL, and don't open-code

Since mountlist is now a TAILQ, convert some missed usages
so things build again.

branches: 1.51.12; 1.51.22; 1.51.26;
Merge from matt-nb5-mips64

kill MALLOC and FREE macros.

branches: 1.49.2; 1.49.8; 1.49.16;
PR kern/38141 lookup/vfs_busy acquire rwlock recursively

Simplify the mount locking. Remove all the crud to deal with recursion on
the mount lock, and crud to deal with unmount as another weirdo lock.

Hopefully this will once and for all fix the deadlocks with this. With this
commit there are two locks on each mount:

- krwlock_t mnt_unmounting. This is used to prevent unmount across critical
sections like getnewvnode(). It's only ever read locked with rw_tryenter(),
and is only ever write locked in dounmount(). A write hold can't be taken
on this lock if the current LWP could hold a vnode lock.

- kmutex_t mnt_updating. This is taken by threads updating the mount, for
example when going r/o -> r/w, and is only present to serialize updates.
In order to take this lock, a read hold must first be taken on
mnt_unmounting, and the two need to be held across the operation.

One effect of this change: previously if an unmount failed, we would make a
half hearted attempt to back out of it gracefully, but that was unlikely to
work in a lot of cases. Now while an unmount that will be aborted is in
progress, new file operations within the mount will fail instead of being
delayed. That is unlikely to be a problem though, because if the admin
requests unmount of a file system then s(he) has made a decision to deny
access to the resource.

PR kern/38135 vfs_busy/vfs_trybusy confusion

The previous fix worked, but it opened a window where mounts could have
disappeared from mountlist while the caller was traversing it using
vfs_trybusy(). Fix that.

Fix build of these files after the vfs_trybusy change. Apply the same
modification done in compat/common/vfs_syscalls_20.c:1.27.

branches: 1.46.6; 1.46.8; 1.46.10;
PR kern/37706 (forced unmount of file systems is unsafe):

- Do reference counting for 'struct mount'. Each vnode associated with a
mount takes a reference, and in turn the mount takes a reference to the
vfsops.
- Now that mounts are reference counted, replace the overcomplicated mount
locking inherited from 4.4BSD with a recursable rwlock.

make this compile again.

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: 1.43.2; 1.43.6;
more VFS_STATVFS(x,y,z) fallout; change them to VFS_STATVFS(x,y). (hi, pooka!)

branches: 1.42.2;
vfs_getopsbyname("ngs") -> vfs_getopsbyname("nfs"). 'nuff said

branches: 1.41.2;
Merge from vmlocking:

- Split vnode::v_flag into three fields, depending on field locking.
- simple_lock -> kmutex in a few places.
- Fix some simple locking problems.

branches: 1.40.6; 1.40.8; 1.40.10;
include <compat/sys/mount.h> for MFSNAMELEN

<dsl> I suspect my set of test build kernels is longer than ad's :-)

tsk!

Change compat mount code to pass do_sys_mount() kernel resident buffers.
Possibly the standard nfs code needs teaching how to set the length and
address family in order to support non-netbsd sockaddr.
There are now no active stackgap() calls in the compat tree.

branches: 1.37.2;
Need a char* for doing pointer arithmetic.

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

branches: 1.35.2;
Merge newlock2 to head.

branches: 1.34.20;
merge ktrace-lwp.

Instead of trying to clear ufs_args' export member, zero the whole
structure so that we don't rely on that (renamed) field. Should fix
the build. Found by he@.

Now that <ufs/ufsmount.h> includes <ufs/extattr.h>, we also need
<sys/vnode.h> and <sys/vnode_if.h> to bring the definition of struct
vop_getextattr_args into scope. Fixes build problem for arc.

branches: 1.31.2;
fix const'ification fallout

nuke trailing whitespace

branches: 1.29.4; 1.29.6;
ANSIfy, some KNF.

Fix some statfs->statvfs fallout. Compile tested only...

branches: 1.27.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Fix 'struct lwp *' lossage.

Merge the nathanw_sa branch.

compatibility, not compatiblity.

retval is 'register_t *', not 'int *'

make the stackgap_{init,alloc} functions MP friendly (i.e. pass struct proc *
in, instead of using curproc). While there add an optional size argument to
stackgap_init.

add RCSIDs (including regeneration of files as appropriate)

branches: 1.20.2;
Use NULL instead of an explicit cast.

branches: 1.19.2;
remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>

Kill register declarations.

branches: 1.17.2;
Shut 'gcc -Wuninitialized' up.

branches: 1.16.8;
bzero->memset, bcopy->memcpy, bcmp->memcmp

Make this compile again in light of Lite2.

Arrgh, I said "abort", dammit...

*** empty log message ***

Update copyright.

lint: add prototype for static function make_ultrix_mntent().

lint: gc unused variables in ultrix_sys_mount().

Add changes to make vic-2.8 Ultrix binaries work on NetBSD with COMPAT_ULTRIX:
* Add IPmulticast setsockopt emulation.
* Add Ultrix shmsys emulation (untested).
* tidy up use of stackgap.

Fix const-pointer lint in copyout of consed-up native fstype string,
from consed-up native mount args.

branches: 1.7.2;
Update copyright.

Backout previous kprintf change.

printf -> kprintf, sprintf -> ksprintf

Remove gcc -Wall lint from ultrix emulation.-
Mostly adding explicit != comparison to "if (error = copyin/out( ... ))".
Fix comment glitch in ultrix_fs.c

Adapt to NFSv3.

Add emulation of ultrix mount(2). Sufficient to NFS-mount filesystems
using a NetBSD kernel in an ultrix root filesystem.

Move wait emulation to the old (v7) wait syscall number, as that's
what the Ultrix ufs_mount binary uses.

Add emulation of Ultrix select: before calling native sys_select(),
limit the number of FDs to select on to the maximum supported by NetBSD --
which is as many FDs as the emul_ultrix process can have open, anyway.

Add emulation of Ultrix getmnt(2) in ultrix_fs.c

Add partial emulation of Ultrix tty ioctl()s in ultrix_ioctl.c, derived
from compat/sunos/sunos_ioctl.c. Ultrix libc's ``isatty()'' now works
in compat_emul processes.

fix various typos in comments.

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: 1.38.2;
KNF. No functional change.

branches: 1.37.8; 1.37.16;
Uninitialized var, found by mootja; not tested, but obvious enough

branches: 1.36.22; 1.36.40; 1.36.44;
Merge from matt-nb5-mips64

branches: 1.35.4; 1.35.6; 1.35.22;
Catch up with descriptor handling changes. See kern_descrip.c revision
1.173 for details.

branches: 1.34.6;
Use FILE_LOCK() and FILE_UNLOCK().
Attempt to fix all the code paths so that the 'fp' returned by fd_getfile()
isn't left locked, and is always unlocked (and ref-counted) before
doing anything that might sleep.

make this compile again.

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: 1.31.8; 1.31.14; 1.31.16; 1.31.20;
Fallout from the interface ioctl changes:

OSIOCGIFADDR -> OOSIOCGIFADDR
OSIOCGIFDSTADDR -> OOSIOCGIFDSTADDR
OSIOCGIFNETMASK -> OOSIOCGIFNETMASK

Also, one instance of needing to include <net/if.h> before
<compat/sys/sockio.h> due to use of IFNAMSIZ in the latter.

Discussed with christos.

Add a sockaddr_storage member to "struct ifreq" maintaining backwards
compatibility with the older ioctls. This avoids stack smashing and
abuse of "struct sockaddr" when ioctls placed "struct sockaddr_foo's" that
were longer than "struct sockaddr".
XXX: Some of the emulations might be broken; I tried to add code for
them but I did not test them.

branches: 1.29.6; 1.29.8;
Merge newlock2 to head.

branches: 1.28.20;
merge ktrace-lwp.

branches: 1.27.2;
avoid shadow warnings

nuke trailing whitespace

branches: 1.25.4; 1.25.6;
Constify the speedtab arrays

ANSIfy, some KNF.

branches: 1.23.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Fix 'struct lwp *' lossage.

sort the ioctl's so we can see what we've implemented and what we have not.

Change 'data' argument to fo_ioctl and fo_fcntl from 'caddr_t' to 'void *'.
Avoids a lot of casting and removes the need for some line breaks.
Removed a load of (caddr_t) casts from calls to copyin/copyout as well.
(approved by christos - he has a plan to remove caddr_t...)

Merge the nathanw_sa branch.

add RCSIDs (including regeneration of files as appropriate)

branches: 1.17.2;
Fix a partial construction problem that can cause race conditions
between creation of a file descriptor and close(2) when using kernel
assisted threads. What we do is stick descriptors in the table, but
mark them as "larval". This causes essentially everything to treat
it as a non-existent descriptor, except for fdalloc(), which sees a
filled slot so that it won't (incorrectly) allocate it again. When
a descriptor is fully constructed, the code that has constructed it
marks it as "mature" (which actually clears the "larval" flag), and
things continue to work as normal.

While here, gather all the code that gets a descriptor from the table
into a fd_getfile() function, and call it, rather than having the
same (sometimes incorrect) code copied all over the place.

use _KERNEL_OPT.

branches: 1.15.2;
LKMify

Kill register declarations.

branches: 1.13.12;
bzero->memset, bcopy->memcpy, bcmp->memcmp

defopt COMPAT_SUNOS

defopt COMPAT_ULTRIX

lint: add prototypes for termio/termios emul conversions and ioctl handlers.

NetBSD doesn't have VSWTCH, so we can't emulate it; clarify. (see PR#2793).

* Fix typo in SIOGIFCONF handling.
* Change explicit SunOS-compat ioctl codes to Ultrix-compat codes.

Backout previous kprintf change.

printf -> kprintf, sprintf -> ksprintf

Merge the netbsd-1-2 branch back into the mainline.

Fix typos in SUSP and DSUSP mapping when setting Ultrix posixmode tty
attributes (was 112 and 113, should be 12 and 13).

branches: 1.3.4;
Remove gcc -Wall lint from ultrix emulation.-
Mostly adding explicit != comparison to "if (error = copyin/out( ... ))".
Fix comment glitch in ultrix_fs.c

Rewrite (a copy of) the emul-sunos termio/termios emulation code to
emulate Ultrix termio/termios instead. Ultrix termio c_cc has separate
VMIM/VTIME attributes, and the Ultrix termios c_cc is a strict
superset of Ultrix termio c_cc. The termios-only c_cc indices are
all changed, relative to SunOS.

Add emulation of Ultrix select: before calling native sys_select(),
limit the number of FDs to select on to the maximum supported by NetBSD --
which is as many FDs as the emul_ultrix process can have open, anyway.

Add emulation of Ultrix getmnt(2) in ultrix_fs.c

Add partial emulation of Ultrix tty ioctl()s in ultrix_ioctl.c, derived
from compat/sunos/sunos_ioctl.c. Ultrix libc's ``isatty()'' now works
in compat_emul processes.

avoid uninitialised accesses

found by GCC 12.

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: 1.125.4;
Allow syscall_establish() to install new syscalls when the existing
entry-point is either sys_nomodule or sys_nosys. Update the
makesyscalls.sh script to create a const array of bits to allow
syscall_disestablish() to properly restore the original entry-point.
Update all the initializers of struct emul to initialize the pointer
to the bit array struct emul.

XXX Regen of all files created by makesyscalls.sh will come soon,
XXX followed by a kernel version bump (since struct emul is being
XXX modified).

This commit should address PR kern/45781 and also removes the need
for the work-around for that PR in file

sys/arch/usermode/modules/syscallemu/syscallemu.c

branches: 1.124.2;
Remove an element from struct emul: e_tracesig

e_tracesig used to be implemented for Darwin compat. Nowadays the Darwin
compatiblity layer is gone and there are no other users.

This functionality isn't used where it shall be used in the existing
codebase.

If we want to emulate debugging interfaces in compat layers we would need
to implement that from scratch anyway. We would need to be bug compatible
with other OSes too.

Proposed on tech-kern@.

Welcome to NetBSD 8.99.16!

Sponsored by <The NetBSD Foundation>

branches: 1.123.2;
remove struct emul's e_fault.

It used to be used by COMPAT_IRIX for the purpose of overriding
uvm_fault (only implemented in MIPS), now removed.

Ride 8.99.12 version bump.

branches: 1.122.32;
Remove COMPAT_SA / KERN_SA. Welcome to 6.99.3!
Approved by core@.

branches: 1.121.8; 1.121.12;
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: 1.120.2;
Remove nfssvc non-emulations I missed yesterday.

remove nfssvc emulation (or non-emulation)

branches: 1.118.4;
Adapt to the state after the recent time_t change.
Type changes:
timeval -> timeval50
itimerval -> itimerval50
rusage -> rusage50
and use of the compat_50 calls where appropriate.
Untested, but at least it builds.

Discussed with christos@

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: 1.116.2;
Merge wrstuden-revivesa into HEAD.

'if (error = 0)' -> 'if (error == 0)'

convert some [left behind] compat code to use new sockopt API

branches: 1.113.2;
Replace references to getsock/getvnode.

branches: 1.112.2; 1.112.4; 1.112.6;
Make this compile again, from Jan-Benedict Glaw jbglaw at lug-owl dot de

branches: 1.111.2;
Catch up with descriptor handling changes. See kern_descrip.c revision
1.173 for details.

branches: 1.110.6;
make this compile again.

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: 1.108.8; 1.108.14; 1.108.16; 1.108.20;
Delete fom stackgap lines that seem to have got left in.

Split the fcntl locking code out from its copyin/out.
Use to avoid all the stackgap stuff in compat code.

branches: 1.106.2; 1.106.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.105.2;
Merge newlock2 to head.

branches: 1.104.20;
merge ktrace-lwp.

add <compat/sys/signal*.h>

64 bit inode changes.

define syscall again.

No point in declaring syscall_intern and syscall in a zillion places.

branches: 1.99.2;
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: 1.98.2;
nuke trailing whitespace

Hmm - vax is different. sendsig_sigcontext() is for __mips only.
Should fix build error found by Havard Eidnes.

branches: 1.96.2;
use sendsig_sigcontext() directly instead of the generic sendsig()

branches: 1.95.4;
Bounds check syscall arguments where appropriate

Constify a few read-only arrays/variables.

ANSIfy, some KNF.

branches: 1.92.2;
Put back Emmanuel's sigfilter hooks, as decided by Core.

Introduce lwp_emuldata and the associated hooks. No hook is provided for the
exec case, as the emulation already has the ability to intercept that
with the e_proc_exec hook. It is the responsability of the emulation to
take appropriaye action about lwp_emuldata in e_proc_exec.

Patch reviewed by Christos.

back the sigfilter emulation hook change off

Add a sigfilter emulation hook. It is used at the beginning of kpsignal2()
so that a specific emulation has the oportunity to filter out some signals.

if sigfilter returns 0, then no signal is sent by kpsignal2().

There is another place where signals can be generated: trapsignal. Since this
function is already an emulation hook, no call to the sigfilter hook was
introduced in trapsignal.

This is needed to emulate the softsignal feature in COMPAT_DARWIN (signals
sent as Mach exception messages)

Fix bogus uninitialised warnings.

add support for non-executable mappings (where the hardware allows this)
and make the stack and heap non-executable by default. the changes
fall into two basic catagories:

- pmap and trap-handler changes. these are all MD:
= alpha: we already track per-page execute permission with the (software)
PG_EXEC bit, so just have the trap handler pay attention to it.
= i386: use a new GDT segment for %cs for processes that have no
executable mappings above a certain threshold (currently the
bottom of the stack). track per-page execute permission with
the last unused PTE bit.
= powerpc/ibm4xx: just use the hardware exec bit.
= powerpc/oea: we already track per-page exec bits, but the hardware only
implements non-exec mappings at the segment level. so track the
number of executable mappings in each segment and turn on the no-exec
segment bit iff the count is 0. adjust the trap handler to deal.
= sparc (sun4m): fix our use of the hardware protection bits.
fix the trap handler to recognize text faults.
= sparc64: split the existing unified TSB into data and instruction TSBs,
and only load TTEs into the appropriate TSB(s) for the permissions.
fix the trap handler to check for execute permission.
= not yet implemented: amd64, hppa, sh5

- changes in all the emulations that put a signal trampoline on the stack.
instead, we now put the trampoline into a uvm_aobj and map that into
the process separately.

originally from openbsd, adapted for netbsd by me.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.85.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Fix 'struct lwp *' lossage.

Cull unused variables. Sigh.

PS - Cross compilers are cool.

No need to pick a "default address" for mmap in compat code, since we
merely call sys_mmap() at the end anyway, and that will pick the
address for us, if it's needed.

Likewise for checking if /dev/zero is being mapped.

Merge the nathanw_sa branch.

set struct emul's nsysent to compat SYS_NSYSENT, not SYS_MAXSYSCALL

- Introduce a e_fault field in struct proc to provide emulation specific
memory fault handler. IRIX uses irix_vm_fault, and all other emulation
use NULL, which means to use uvm_fault.

- While we are there, explicitely set to NULL the uninitialized fields in
struct emul: e_fault and e_sysctl on most ports

- e_fault is used by the trap handler, for now only on mips. In order to avoid
intrusive modifications in UVM, the function pointed by e_fault does not
has exactly the same protoype as uvm_fault:
int uvm_fault __P((struct vm_map *, vaddr_t, vm_fault_t, vm_prot_t));
int e_fault __P((struct proc *, vaddr_t, vm_fault_t, vm_prot_t));

- In IRIX share groups, all the VM space is shared, except one page.
This bounds us to have different VM spaces and synchronize modifications
to the VM space accross share group members. We need an IRIX specific hook
to the page fault handler in order to propagate VM space modifications
caused by page faults.

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.

Add kernel support for having userland provide the signal trampoline:

* struct sigacts gets a new sigact_sigdesc structure, which has the
sigaction and the trampoline/version. Version 0 means "legacy kernel
provided trampoline". Other versions are coordinated with machine-
dependent code in libc.
* sigaction1() grows two more arguments -- the trampoline pointer and
the trampoline version.
* A new __sigaction_sigtramp() system call is provided to register a
trampoline along with a signal handler.
* The handler is no longer passed to sensig() functions. Instead,
sendsig() looks up the handler by peeking in the sigacts for the
process getting the signal (since it has to look in there for the
trampoline anyway).
* Native sendsig() functions now select the appropriate trampoline and
its arguments based on the trampoline version in the sigacts.

Changes to libc to use the new facility will be checked in later. Kernel
version not bumped; we will ride the 1.6C bump made recently.

branches: 1.76.4; 1.76.6;
get rid of STACKGAP* shit.

make the stackgap_{init,alloc} functions MP friendly (i.e. pass struct proc *
in, instead of using curproc). While there add an optional size argument to
stackgap_init.

add RCSIDs (including regeneration of files as appropriate)

Make the setregs hook emulation-specific, rather than executable
format specific.
Struct emul has a e_setregs hook back, which points to emulation-specific
setregs function. es_setregs of struct execsw now only points to
optional executable-specific setup function (this is only used for
ECOFF).

g/c dead code

branches: 1.71.2; 1.71.4;
Add an e_trapsignal member to struct emul, so that emulated processes can
send the appropriate signal depending on the trap type.

Fix a partial construction problem that can cause race conditions
between creation of a file descriptor and close(2) when using kernel
assisted threads. What we do is stick descriptors in the table, but
mark them as "larval". This causes essentially everything to treat
it as a non-existent descriptor, except for fdalloc(), which sees a
filled slot so that it won't (incorrectly) allocate it again. When
a descriptor is fully constructed, the code that has constructed it
marks it as "mature" (which actually clears the "larval" flag), and
things continue to work as normal.

While here, gather all the code that gets a descriptor from the table
into a fd_getfile() function, and call it, rather than having the
same (sometimes incorrect) code copied all over the place.

use _KERNEL_OPT.

branches: 1.68.2;
Grok __HAVE_MINIMAL_EMUL and __HAVE_SYSCALL_INTERN.

Move prototypes for mips_user_cachectl() and mips_user_cacheflush()
to <mips/cachectl.h>.

adapt to recent struct emul changes

always fill in e_syscall in respective emul_*; if the emulation doesn't
have it's own separated *_syscall() function, use syscall()

split ecoff specific code to separate file ultrix_exec_ecoff.c

make LKM safe

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

restructure struct emul and execsw, in preparation to make emulations LKMable:
* move all exec-type specific information from struct emul to execsw[] and
provide single struct emul per emulation
* elf:
- kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry
per emulation and contains pointer to respective probe function
- interp is allocated via MALLOC() rather than on stack
- elf_args structure is allocated via MALLOC() rather than malloc()
* ecoff: the per-emulation hooks moved from alpha and mips specific code
to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per
emulation supporting ecoff with appropriate probe function
* the makecmds/probe functions don't set emulation, pointer to emulation is
part of appropriate execsw[] entry
* constify couple of structures

Update extern declarations of {hpux,ultrix}_syscallnames for change
to e_syscallnames in struct emul. Untested on HP, but should be ok.

version[] string was const'ifed. Pointed out by Izumi Tsutsui.

remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>

branches: 1.57.4;
The size of the members of struct ultrix_utsname were nothing like
reality - adjust and fill in "version" the same way that some other
compat routines do. An Ultrix "uname -a" returns something meaninful
now instead of just "NetBSD ".

Kill register declarations.

Centralise the declarations of cpu_model, machine, machine_arch,
osrelease, and ostype and remove "extern char foo[];" (for hostname
and domainname too).

Also delete redunctant decl of boottime in kern_info_43.c.

Merge parts of chs-ubc2 into the trunk:
* Remove the casts to vaddr_t from the round_page() and trunc_page() macros to
make them type-generic, which is necessary i.e. to operate on file offsets
without truncating them.
* In due course, cast pointer arguments to these macros to an appropriate
integral type (paddr_t, vaddr_t).

Originally done by Chuck Silvers, updated by myself.

branches: 1.53.2;
Update for new msgctl()/semctl()/shmctl() calls.

emulate fcntl(F_SETLK) & Co.
(seti@home works now:-)

Add "use counting" to file entries. When closing a file, and it's reference
count is 0, wait for use count to drain before finishing the close.

This is necessary in order for multiple processes to safely share file
descriptor tables.

branches: 1.50.2; 1.50.4;
Regen

s/SunOS/Ultrix/ in comment

vax -> __vax__ (and mips to __mips__ in ultrix_misc.c)

Defopt SYSVMSG, SYSVSEM and SYSVSHM.

Use a private implementation of sys_sigvec(). Ultrix uses an sv_flags bit
unknown to NetBSD and sigaction1() does (now?) complain about it.

repair signal handling:
-use own sigcode since the native one uses a sigreturn syscall not present
in Ultrix
-route sigreturn to compat_13_sigreturn

Make Ultrix emulation private functions for sigreturn and sigsuspend
because the NetBSD implementation differs now.

Update for sigmask changes.

Merge paddr_t changes into the main branch.

bzero->memset, bcopy->memcpy, bcmp->memcmp

branches: 1.40.2;
Add missing include of "opt_nfsserver.h".

Include the NFS option header.

Use void* not caddr_t for 'addr' argument to native mmap().

Correct name of author in license clause 3, as per email with mrg.

Fix a missed *setregs() change.

branches: 1.35.4;
Emulate RISC Ultrix cacheflush() and cachectl() syscalls on mips.

GC old ultrix-emul syscall stub used to debug ultrix signals.

Add prototype for cpu_exec_ecoff_setregs() to mips/inuclde/ecoff_machdep.h.
Use it in compat/ultrix/ultrix_misc.c (setting emul type on mips).

lint: add explicit return type to ultrix_sys_shmsys().

Correct shm ifdefs for when SVSHM is defined. Fix from Ted Lemon in PR 3542.

Add changes to make vic-2.8 Ultrix binaries work on NetBSD with COMPAT_ULTRIX:
* Add IPmulticast setsockopt emulation.
* Add Ultrix shmsys emulation (untested).
* tidy up use of stackgap.

NFSCLIENT -> NFS

branches: 1.28.2;
Update copyright.

Backout previous kprintf change.

printf -> kprintf, sprintf -> ksprintf

sys/dir.h -> sys/dirent.h

avoid unnecessary checks of m_get/MGET/etc.'s return values. When
they're called with M_WAIT, they are defined to never return NULL.

branches: 1.23.4;
Remove gcc -Wall lint from ultrix emulation.-
Mostly adding explicit != comparison to "if (error = copyin/out( ... ))".
Fix comment glitch in ultrix_fs.c

Add vax setregs() support for exec'ing vax ultrix a.out binaries.

Adapt to NFSv3.

Add '/emul/ultrix' pathname processing to Ultrix emulation, and move
Ultrix syscalls that require that processing out of ultrix_misc.c
to ultrix_pathname.c.

Add sigcode and esigcode to emul_ultrix, so that signal trampoline
code is set up for emul_ultrix processes.

Add emulation of Ultrix select: before calling native sys_select(),
limit the number of FDs to select on to the maximum supported by NetBSD --
which is as many FDs as the emul_ultrix process can have open, anyway.

Add emulation of Ultrix getmnt(2) in ultrix_fs.c

Add partial emulation of Ultrix tty ioctl()s in ultrix_ioctl.c, derived
from compat/sunos/sunos_ioctl.c. Ultrix libc's ``isatty()'' now works
in compat_emul processes.

merge in changes from 1.1 release branch

branches: 1.16.2;
Prefix names of system call implementation functions with `sys_'.

Make system calls conform to a standard prototype and bring those
prototypes into scope.

don't assume the f_fsnamelen is nul-truncated or longer than MFSNAMELEN

Clear up name conflict between Ultrix syscall 103 and 139.

sigcode and esigcode aren't defined for ultrix emulation

- added struct emul to all emulations.
- removed all setup functions.
- added copyargs() functions where needed.

copy*str() should use size_t.

Fix up non-ANSI code (which was a no-op anyway)

{get,set}rlimit functions (From Jonathan Stone)

pay a small amount of lip service to the new syscall args mechanism.
In reality, none of these will compile.

ultrix_{get,set}info from Arne H Juul <arnej@dsl.unit.no>

branches: 1.5.2;
New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD'

oops

update for getdtablesize change, and track compat_sunos

much works but untested w/new fs. expect more tomorrow

first swipe at ultrix compat. expect many bug fixes. very related to compat/sunos

Fix the required-list for compat_ultrix. With the merge of the
[pgoyette-compat] branch there is no longer a "compat" module;
instead we have lots of version-specific compat_xx modules.

Code inspection shows compat_ultrix uses compat_13 (and newer)
stuff, so set the requirements list accordingly.

Should fix PR port-pmax/54037

branches: 1.5.30;
c99 initializers for struct execsw

exec modules need to be of the exec kind

branches: 1.3.4; 1.3.6; 1.3.8; 1.3.12; 1.3.24; 1.3.34; 1.3.38;
COMPAT_ULTRIX does not work on vax because there are no hooks, but make
it compile anyway.

take ecoff header for ecoff code.

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 few typos in comments.

Try not to use f_data, use f_{vnode,socket,pipe,mqueue,kqueue,ksem} to get
a correctly typed pointer.

branches: 1.38.22;
Merge from matt-nb5-mips64

Convert 67 namei call sites to use namei_simple, in these functions:

check_console, veriexecclose, veriexec_delete, veriexec_file_add,
emul_find_root, coff_load_shlib (sh3 version), coff_load_shlib,
compat_20_sys_statfs, compat_20_netbsd32_statfs,
ELFNAME2(netbsd32,probe_noteless), darwin_sys_statfs,
ibcs2_sys_statfs, ibcs2_sys_statvfs, linux_sys_uselib,
osf1_sys_statfs, sunos_sys_statfs, sunos32_sys_statfs,
ultrix_sys_statfs, do_sys_mount, fss_create_files (3 of 4),
adosfs_mount, cd9660_mount, coda_ioctl, coda_mount, ext2fs_mount,
ffs_mount, filecore_mount, hfs_mount, lfs_mount, msdosfs_mount,
ntfs_mount, sysvbfs_mount, udf_mount, union_mount, sys_chflags,
sys_lchflags, sys_chmod, sys_lchmod, sys_chown, sys_lchown,
sys___posix_chown, sys___posix_lchown, sys_link, do_sys_pstatvfs,
sys_quotactl, sys_revoke, sys_truncate, do_sys_utimes, sys_extattrctl,
sys_extattr_set_file, sys_extattr_set_link, sys_extattr_get_file,
sys_extattr_get_link, sys_extattr_delete_file,
sys_extattr_delete_link, sys_extattr_list_file, sys_extattr_list_link,
sys_setxattr, sys_lsetxattr, sys_getxattr, sys_lgetxattr,
sys_listxattr, sys_llistxattr, sys_removexattr, sys_lremovexattr

All have been scrutinized (several times, in fact) and compile-tested,
but not all have been explicitly tested in action.

XXX: While I haven't (intentionally) changed the use or nonuse of
XXX: TRYEMULROOT in any of these places, I'm not convinced all the
XXX: uses are correct; an audit might be desirable.

branches: 1.36.2;
Adapt to the state after the recent time_t change.
Type changes:
timeval -> timeval50
itimerval -> itimerval50
rusage -> rusage50
and use of the compat_50 calls where appropriate.
Untested, but at least it builds.

Discussed with christos@

branches: 1.35.4; 1.35.12;
Replace references to getsock/getvnode.

branches: 1.34.4; 1.34.6; 1.34.8;
Catch up with descriptor handling changes. See kern_descrip.c revision
1.173 for details.

branches: 1.33.6;
Use FILE_LOCK() and FILE_UNLOCK().
Attempt to fix all the code paths so that the 'fp' returned by fd_getfile()
isn't left locked, and is always unlocked (and ref-counted) before
doing anything that might sleep.

make this compile again.

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: 1.30.4;
Remove cn_lwp from struct componentname. curlwp should be used
from on. The NDINIT() macro no longer takes the lwp parameter and
associates the credentials of the calling thread with the namei
structure.

branches: 1.29.2;
more VFS_STATVFS(x,y,z) fallout; change them to VFS_STATVFS(x,y). (hi, pooka!)

branches: 1.28.6; 1.28.8; 1.28.14;
Make this compile again (after stackgap removal)

Change the way that emulations locate files within the emulation root to
avoid having to allocate space in the 'stackgap'
- which is very LWP unfriendly.
The additional code for non-emulation namei() is trivial, the reduction for
the emulations is massive.
The vnode for a processes emulation root is saved in the cwdi structure
during process exec.
If the emulation root the TRYEMULROOT flag are set, namei() will do an initial
search for absolute pathnames in the emulation root, if that fails it will
retry from the normal root.
".." at the emulation root will always go to the real root, even in the middle
of paths and when expanding symlinks.
Absolute symlinks found using absolute paths in the emulation root will be
relative to the emulation root (so /usr/lib/xxx.so -> /lib/xxx.so links
inside the emulation root don't need changing).
If the root of the emulation would be returned (for an emulation lookup), then
the real root is returned instead (matching the behaviour of emul_lookup,
but being a cheap comparison here) so that programs that scan "../.."
looking for the root dircetory don't loop forever.
The target for symbolic links is no longer mangled (it used to get the
CHECK_ALT_xxx() treatment, so could get /emul/xxx prepended).
CHECK_ALT_xxx() are no more. Most of the change is deleting them, and adding
TRYEMULROOT to the flags to NDINIT().
A lot of the emulation system call stubs could now be deleted.

branches: 1.26.2; 1.26.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.25.2;
Merge newlock2 to head.

branches: 1.24.20;
merge ktrace-lwp.

branches: 1.23.4;
nuke trailing whitespace

branches: 1.22.4; 1.22.6;
ANSIfy, some KNF.

Fix some statfs->statvfs fallout. Compile tested only...

Replace the statfs() family of system calls with statvfs().
Retain binary compatibility.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.18.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Fix 'struct lwp *' lossage.

Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V

Merge the nathanw_sa branch.

make the stackgap_{init,alloc} functions MP friendly (i.e. pass struct proc *
in, instead of using curproc). While there add an optional size argument to
stackgap_init.

add RCSIDs (including regeneration of files as appropriate)

branches: 1.12.2;
Fix a partial construction problem that can cause race conditions
between creation of a file descriptor and close(2) when using kernel
assisted threads. What we do is stick descriptors in the table, but
mark them as "larval". This causes essentially everything to treat
it as a non-existent descriptor, except for fdalloc(), which sees a
filled slot so that it won't (incorrectly) allocate it again. When
a descriptor is fully constructed, the code that has constructed it
marks it as "mature" (which actually clears the "larval" flag), and
things continue to work as normal.

While here, gather all the code that gets a descriptor from the table
into a fd_getfile() function, and call it, rather than having the
same (sometimes incorrect) code copied all over the place.

branches: 1.11.2;
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 register declarations.

branches: 1.9.2;
Add "use counting" to file entries. When closing a file, and it's reference
count is 0, wait for use count to drain before finishing the close.

This is necessary in order for multiple processes to safely share file
descriptor tables.

branches: 1.8.4;
const poisoning and CHECK_ALT_CREAT fixes.

bzero->memset, bcopy->memcpy, bcmp->memcmp

lint: add prototype for static local function ultrixstatfs().

Now needs sys/proc.h since compat/common/compat_util.h doesn't anymore.

Fix cut-and-paste (ouap vs ap) bugs so the previous revision actually
compiles. Change variable names to use "ap" instead of "ouap" everywhere
to avoid similar bugs in future.

Define execv() and execve() consistently across emulations.
Do path name translation.

branches: 1.2.4;
Remove gcc -Wall lint from ultrix emulation.-
Mostly adding explicit != comparison to "if (error = copyin/out( ... ))".
Fix comment glitch in ultrix_fs.c

Add '/emul/ultrix' pathname processing to Ultrix emulation, and move
Ultrix syscalls that require that processing out of ultrix_misc.c
to ultrix_pathname.c.

Regen

Merge the [pgoyette-compat] branch

Regen

branches: 1.72.2; 1.72.4;
Revert vadvise(2) removal

This system call was used in legacy Lisp code, that was inherited to modern
age and still compiled against supported compat layers (e.g. in clisp,
oaklisp, Franz Lisp).

It used to instruct the kernel about paging policy (G/C aware, flush etc).

Newly compiled code (assuming that it will detect vadvise()) will use the
libc stub for vadvise(). The headers for this interface are gone.

vadvise(2) could be marked as COMPAT_80, but as long as we support ultrix,
sunos or aout68k ABI, don't bother with this.

Requested by <mrg>

compat/ultrix: Drop SYS_vadvise

The (o)vadvise syscall is dummy since the beginning of NetBSD.

Sponsored by <The NetBSD Foundation>

compat/ultrix: Drop SYS_sbrk

sbrk - change data segment size

This syscall is dummy since the inception of the project.

Sponsored by <The NetBSD Foundation>

compat ultrix: Drop the sstk(2) syscall

sstk(2) has never been implemented by the NetBSD kernel.

Sponsored by <The NetBSD Foundation>

regen

branches: 1.67.4;
regen

branches: 1.66.2;
regen

branches: 1.65.2;
regen

regen

branches: 1.63.6;
Regen for dup/dup2/dup3 argument types fix.

branches: 1.62.10; 1.62.20; 1.62.24;
regen:
- remove nfssvc / fs_nfs.h / #ifdef NFS
- make getfh unconditional

branches: 1.61.2;
Regen (new makesyscalls.sh)

Regenerate files after updating syscalls.master for compat_ultrix:

Adapt to the state after the recent time_t change.
Type changes:
timeval -> timeval50
itimerval -> itimerval50
rusage -> rusage50
and use of the compat_50 calls where appropriate.
Untested, but at least it builds.

Discussed with christos@

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

regen

Regen.

branches: 1.56.2; 1.56.4;
regen from syscalls.master r1.46

branches: 1.55.2; 1.55.4; 1.55.6;
Regen.

branches: 1.54.6; 1.54.8;
regen

branches: 1.53.16; 1.53.24; 1.53.28;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.52.10;
regen (sys_getfh -> compat_30_sys_getfh)

regenerate.

branches: 1.50.4; 1.50.8; 1.50.16;
merge ktrace-lwp.

branches: 1.49.4;
regen

regen

branches: 1.47.2; 1.47.10; 1.47.12;
Regen for correct RCS ID.

Regen: Merge the nathanw_sa branch.

set nsysent to 512 (oh well, just three syscalls too many for 256)

add RCSIDs (including regeneration of files as appropriate)

branches: 1.43.2;
use _KERNEL_OPT.

branches: 1.42.2;
egen; getpid(2) is MP-safe.

Regen; add sy_flags.

Regen.

update for changed makesyscalls.master

branches: 1.38.2;
regen

Regen.

branches: 1.36.2; 1.36.4;
Regen

regen

Regen

regen

regen

Regen: defopt NFSSERVER

Regen: makesyscalls.sh changed.

Regen; syscalls.master and makesyscalls.sh changed.

Regen: use POSIX semantics for chown()/fchown().

Regen.

Regen.

Regen: back out RCD ID related changes.

regened with RCSIDs in place

Regen.

Regen: Use compat_12_sys_swapon().

Emulate RISC Ultrix cacheflush() and cachectl() syscalls on mips.

Add changes to make vic-2.8 Ultrix binaries work on NetBSD with COMPAT_ULTRIX:
* Add IPmulticast setsockopt emulation.
* Add Ultrix shmsys emulation (untested).
* tidy up use of stackgap.

Syscalls.master changed, regen. (NFSCLIENT -> NFS)

Regen; makesyscalls.sh emits comments now.

Regen.

Regen.

branches: 1.15.4;
Add '/emul/ultrix' pathname processing to Ultrix emulation, and move
Ultrix syscalls that require that processing out of ultrix_misc.c
to ultrix_pathname.c.

Add emulation of ultrix mount(2). Sufficient to NFS-mount filesystems
using a NetBSD kernel in an ultrix root filesystem.

Move wait emulation to the old (v7) wait syscall number, as that's
what the Ultrix ufs_mount binary uses.

Add emulation of Ultrix select: before calling native sys_select(),
limit the number of FDs to select on to the maximum supported by NetBSD --
which is as many FDs as the emul_ultrix process can have open, anyway.

Add emulation of Ultrix getmnt(2) in ultrix_fs.c

Add partial emulation of Ultrix tty ioctl()s in ultrix_ioctl.c, derived
from compat/sunos/sunos_ioctl.c. Ultrix libc's ``isatty()'' now works
in compat_emul processes.

Reran makesyscalls.sh.

makesyscalls.sh changed

Clear up name conflict between Ultrix syscall 103 and 139.

syscall 139 is ULTRIX_SYS_sigcleanup (from Simon Burge)

- added struct emul to all emulations.
- removed all setup functions.
- added copyargs() functions where needed.

added sigreturn

changes for new sysent structure (from J. Stone)

add ultrix_{get,set}sysinfo() from Arne H Juul <arnej@dsl.unit.no>

branches: 1.4.2;
fix a botch, and gen syscall files

update to reflect compat_ultrix syscalls.master

much works but untested w/new fs. expect more tomorrow

first swipe at ultrix compat. expect many bug fixes. very related to compat/sunos

Regen

Merge the [pgoyette-compat] branch

Regen

branches: 1.67.2; 1.67.4;
Revert vadvise(2) removal

This system call was used in legacy Lisp code, that was inherited to modern
age and still compiled against supported compat layers (e.g. in clisp,
oaklisp, Franz Lisp).

It used to instruct the kernel about paging policy (G/C aware, flush etc).

Newly compiled code (assuming that it will detect vadvise()) will use the
libc stub for vadvise(). The headers for this interface are gone.

vadvise(2) could be marked as COMPAT_80, but as long as we support ultrix,
sunos or aout68k ABI, don't bother with this.

Requested by <mrg>

compat/ultrix: Drop SYS_vadvise

The (o)vadvise syscall is dummy since the beginning of NetBSD.

Sponsored by <The NetBSD Foundation>

compat/ultrix: Drop SYS_sbrk

sbrk - change data segment size

This syscall is dummy since the inception of the project.

Sponsored by <The NetBSD Foundation>

compat ultrix: Drop the sstk(2) syscall

sstk(2) has never been implemented by the NetBSD kernel.

Sponsored by <The NetBSD Foundation>

regen

branches: 1.62.4;
regen

branches: 1.61.2;
regen

branches: 1.60.2;
regen

regen

branches: 1.58.6;
Regen for dup/dup2/dup3 argument types fix.

branches: 1.57.10; 1.57.20; 1.57.24;
regen:
- remove nfssvc / fs_nfs.h / #ifdef NFS
- make getfh unconditional

branches: 1.56.2;
Regen (new makesyscalls.sh)

Regenerate files after updating syscalls.master for compat_ultrix:

Adapt to the state after the recent time_t change.
Type changes:
timeval -> timeval50
itimerval -> itimerval50
rusage -> rusage50
and use of the compat_50 calls where appropriate.
Untested, but at least it builds.

Discussed with christos@

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

regen

Regen.

branches: 1.51.2; 1.51.4;
regen from syscalls.master r1.46

branches: 1.50.2; 1.50.4; 1.50.6;
Regen.

branches: 1.49.6; 1.49.8;
make this compile again.

regen

branches: 1.47.16; 1.47.22; 1.47.24; 1.47.28;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.46.10;
regen (sys_getfh -> compat_30_sys_getfh)

regenerate.

branches: 1.44.4; 1.44.8; 1.44.16;
merge ktrace-lwp.

branches: 1.43.4;
regen

regen

branches: 1.41.2; 1.41.10; 1.41.12;
Regen for correct RCS ID.

Regen: Merge the nathanw_sa branch.

add RCSIDs (including regeneration of files as appropriate)

branches: 1.38.2;
use _KERNEL_OPT.

branches: 1.37.2;
egen; getpid(2) is MP-safe.

Regen; add sy_flags.

Regen.

update for changed makesyscalls.master

update for my change to makesyscalls.sh, and apparently previous
changes as well...

branches: 1.32.2;
regen

Regen.

branches: 1.30.2; 1.30.4;
Regen

regen

Regen

Fixup big-endian syscall args.

regen

regen

Regen: defopt NFSSERVER

Regen: makesyscalls.sh changed.

Regen; syscalls.master and makesyscalls.sh changed.

Regen: use POSIX semantics for chown()/fchown().

Regen.

Regen.

Regen: back out RCD ID related changes.

regened with RCSIDs in place

Regen.

Regen: Use compat_12_sys_swapon().

Emulate RISC Ultrix cacheflush() and cachectl() syscalls on mips.

Add changes to make vic-2.8 Ultrix binaries work on NetBSD with COMPAT_ULTRIX:
* Add IPmulticast setsockopt emulation.
* Add Ultrix shmsys emulation (untested).
* tidy up use of stackgap.

branches: 1.12.2;
Syscalls.master changed, regen. (NFSCLIENT -> NFS)

branches: 1.11.2;
Regen.

Regen.

branches: 1.9.4;
Add '/emul/ultrix' pathname processing to Ultrix emulation, and move
Ultrix syscalls that require that processing out of ultrix_misc.c
to ultrix_pathname.c.

Add emulation of ultrix mount(2). Sufficient to NFS-mount filesystems
using a NetBSD kernel in an ultrix root filesystem.

Move wait emulation to the old (v7) wait syscall number, as that's
what the Ultrix ufs_mount binary uses.

Add emulation of Ultrix select: before calling native sys_select(),
limit the number of FDs to select on to the maximum supported by NetBSD --
which is as many FDs as the emul_ultrix process can have open, anyway.

Add emulation of Ultrix getmnt(2) in ultrix_fs.c

Add partial emulation of Ultrix tty ioctl()s in ultrix_ioctl.c, derived
from compat/sunos/sunos_ioctl.c. Ultrix libc's ``isatty()'' now works
in compat_emul processes.

Reran makesyscalls.sh.

makesyscalls.sh changed

Clear up name conflict between Ultrix syscall 103 and 139.

- added struct emul to all emulations.
- removed all setup functions.
- added copyargs() functions where needed.

added sigreturn

New syscall stuff

Regen

Merge the [pgoyette-compat] branch

Regen

branches: 1.71.2; 1.71.4;
Revert vadvise(2) removal

This system call was used in legacy Lisp code, that was inherited to modern
age and still compiled against supported compat layers (e.g. in clisp,
oaklisp, Franz Lisp).

It used to instruct the kernel about paging policy (G/C aware, flush etc).

Newly compiled code (assuming that it will detect vadvise()) will use the
libc stub for vadvise(). The headers for this interface are gone.

vadvise(2) could be marked as COMPAT_80, but as long as we support ultrix,
sunos or aout68k ABI, don't bother with this.

Requested by <mrg>

compat/ultrix: Drop SYS_vadvise

The (o)vadvise syscall is dummy since the beginning of NetBSD.

Sponsored by <The NetBSD Foundation>

compat/ultrix: Drop SYS_sbrk

sbrk - change data segment size

This syscall is dummy since the inception of the project.

Sponsored by <The NetBSD Foundation>

compat ultrix: Drop the sstk(2) syscall

sstk(2) has never been implemented by the NetBSD kernel.

Sponsored by <The NetBSD Foundation>

regen

branches: 1.66.4;
regen

branches: 1.65.2;
regen

branches: 1.64.2;
regen

regen

branches: 1.62.6;
Regen for dup/dup2/dup3 argument types fix.

branches: 1.61.10; 1.61.20; 1.61.24;
regen:
- remove nfssvc / fs_nfs.h / #ifdef NFS
- make getfh unconditional

branches: 1.60.2;
Regen (new makesyscalls.sh)

Regenerate files after updating syscalls.master for compat_ultrix:

Adapt to the state after the recent time_t change.
Type changes:
timeval -> timeval50
itimerval -> itimerval50
rusage -> rusage50
and use of the compat_50 calls where appropriate.
Untested, but at least it builds.

Discussed with christos@

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

regen

Regen.

branches: 1.55.2; 1.55.4;
regen from syscalls.master r1.46

branches: 1.54.2; 1.54.4; 1.54.6;
Regen.

branches: 1.53.6; 1.53.8;
regen

branches: 1.52.16; 1.52.24; 1.52.28;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.51.2;
Merge newlock2 to head.

branches: 1.50.4;
regen (sys_getfh -> compat_30_sys_getfh)

regenerate.

branches: 1.48.4; 1.48.8; 1.48.16;
merge ktrace-lwp.

branches: 1.47.4;
regen

regen

branches: 1.45.2; 1.45.10; 1.45.12;
Regen for correct RCS ID.

Regen: Merge the nathanw_sa branch.

add RCSIDs (including regeneration of files as appropriate)

branches: 1.42.2;
use _KERNEL_OPT.

branches: 1.41.2;
egen; getpid(2) is MP-safe.

Regen; add sy_flags.

Regen.

change the type of *syscallnames[] array to 'const char * const foo[]'

update for changed makesyscalls.master

branches: 1.36.2;
regen

Regen.

branches: 1.34.2; 1.34.4;
Regen

regen

Regen

regen

regen

Regen: defopt NFSSERVER

Regen: makesyscalls.sh changed.

Regen; syscalls.master and makesyscalls.sh changed.

Regen: use POSIX semantics for chown()/fchown().

Regen.