CVS log for src/sys/compat/netbsd32/netbsd32_netbsd.c

Up to [cvs.NetBSD.org] / src / sys / compat / netbsd32

Request diff between arbitrary revisions

Keyword substitution: kv
Default branch: MAIN

Rename dup3110 to dup3100 to match historical practice for NetBSD-11,
because we already have kevent100. Fix compat_dup3 to belong in compat_100
not compat_110.

version dup3

COMPAT_NETBSD32: Add support for memfd_create(2).

netbsd32_netbsd: Sort headers. No binary changes.

Pull up following revision(s) (requested by riastradh in ticket #1833):

	sys/compat/netbsd32/netbsd32_netbsd.c: revision 1.232
	sys/compat/netbsd32/netbsd32_socket.c: revision 1.56
	sys/compat/netbsd32/netbsd32_conv.h: revision 1.45
	sys/compat/netbsd32/netbsd32_fs.c: revision 1.92
	sys/compat/netbsd32/netbsd32.h: revision 1.137

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

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

Pull up following revision(s), all via patch
(requested by riastradh in ticket #1489):

	sys/compat/netbsd32/netbsd32_netbsd.c: revision 1.232
	sys/compat/netbsd32/netbsd32_socket.c: revision 1.56
	sys/compat/netbsd32/netbsd32_conv.h: revision 1.45
	sys/compat/netbsd32/netbsd32_fs.c: revision 1.92
	sys/compat/netbsd32/netbsd32.h: revision 1.137

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

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

Add the eventfd(2) system call to COMPAT_NETBSD32.

Sync with HEAD.

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

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

Remove unused LIMITCHECK() macro (now contained in netbsd32_rlimit.c).

Teach about getrandom(2) to COMPAT_NETBSD32.

Add ACL support for FFS. From FreeBSD.

Mostly merge changes from HEAD upto 20200411

Add mkfifo{,at}(2) mode in mknod{,at}(2) as requested by POSIX

mknod with mode & S_IFIFO and dev=0 shall behave like mkfifo.

Update the documentation to reflect this state.

Add ATF tests.

This is an in-kernel implementation as typically user-space programs use
mkfifo(2) directly, however whenever there is need to bypass libc (like in
valgrind) then portable POSIX software calls the mknod syscall.

Noted on tech-kern@ by Greg Troxel.

Drop unused retval pointer from do_sys_mknod{,at}()

No functional change intended.

sort -u opt_ to remove dup.

Add options for quota.

Include opt_quota.h

Fixes (at least) the amd64 build.

Sync with HEAD

Merge the [pgoyette-compat] branch

Pull up following revision(s) (requested by mrg in ticket #1146):

	sys/compat/netbsd32/netbsd32_netbsd.c: revision 1.219

pset_create() takes a pointer so it needs special handling.

Sync with HEAD, resolve a few conflicts

Apply patch, requested by maxv in ticket #1666:
Fix similar to:

	sys/uvm/uvm_swap.c: revision 1.178

Woah man, fix enormous leak.

        Possible info leak: [len=1056, leaked=931]
        #0 0xffffffff80bad351 in kleak_copyout
        #1 0xffffffff80b2cf64 in uvm_swap_stats.part.1
        #2 0xffffffff80b2d38d in uvm_swap_stats
        #3 0xffffffff80b2d43c in sys_swapctl
        #4 0xffffffff80259b82 in syscall

Apply patch, requested by maxv in ticket #1666:
Fix similar to:

	sys/uvm/uvm_swap.c: revision 1.178

Woah man, fix enormous leak.

        Possible info leak: [len=1056, leaked=931]
        #0 0xffffffff80bad351 in kleak_copyout
        #1 0xffffffff80b2cf64 in uvm_swap_stats.part.1
        #2 0xffffffff80b2d38d in uvm_swap_stats
        #3 0xffffffff80b2d43c in sys_swapctl
        #4 0xffffffff80259b82 in syscall

Apply patch, requested by maxv in ticket #1666:
Fix similar to:

	sys/uvm/uvm_swap.c: revision 1.178

Woah man, fix enormous leak.

        Possible info leak: [len=1056, leaked=931]
        #0 0xffffffff80bad351 in kleak_copyout
        #1 0xffffffff80b2cf64 in uvm_swap_stats.part.1
        #2 0xffffffff80b2d38d in uvm_swap_stats
        #3 0xffffffff80b2d43c in sys_swapctl
        #4 0xffffffff80259b82 in syscall

Apply patch, requested by maxv in ticket #1142:
Similar to:

	sys/uvm/uvm_swap.c: revision 1.178

Fix kernel info leak in swapctl(2).

        Possible info leak: [len=1056, leaked=931]
        #0 0xffffffff80bad351 in kleak_copyout
        #1 0xffffffff80b2cf64 in uvm_swap_stats.part.1
        #2 0xffffffff80b2d38d in uvm_swap_stats
        #3 0xffffffff80b2d43c in sys_swapctl
        #4 0xffffffff80259b82 in syscall

move mmap(), compat 40 mount(), pipe() and getfh() into their own files
as the implementation is non trivial or is compat.  mark old mount()
properly instead of manually #if'ing ito to ENOSYS.

move rlimit and quota code into their own modules.

(netbsd32_netbsd.c should have only simple shims.  anything more
than copying arguments from one args struct to the other should
not be placed in this file.  still a couple more to move out.)

fix style consistency.
remove obsolete comments or commented code.
NFC.

pset_create() takes a pointer so it needs special handling.

Move some extern definitions into netbsd32_netbsd.h rather than having
them in the .c files.

Add a compat_netbsd32_16 to handle the sigcode stuff.

Add a netbsd32_compat40 module, move the 4.0 mount stuff there.

Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)

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

Add getsockopt2().

Sync with HEAD

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>

Synch with HEAD

Untangle the swapctl compat code mess. Welcome to lucky 13.

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.

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>

Refactor pipe1() and correct a bug in sys_pipe2() (SYS_pipe2)

sys_pipe2() returns two integers (values), the 2nd one is a copy of the 2nd
file descriptor that lands in fildes[2]. This is a side effect of reusing
the code for sys_pipe() (SYS_pipe) and not cleaning it up.

The first returned value is (on success) 0.

Introduced a small refactoring in pipe1() that it does not operate over
retval[], but on an array int[2]. A user sets retval[] for pipe() when
desired and needed.

This refactoring touches compat code: netbsd32, linux, linux32.

Before the changes on NetBSD/amd64:

$ ktruss -i ./a.out
[...]
 15131      1 a.out    pipe2(0x7f7fff2e62b8, 0)    = 0, 4
[...]

After the changes:

$ ktruss -i ./a.out
[...]
   782      1 a.out    pipe2(0x7f7fff97e850, 0)    = 0
[...]

There should not be a visible change for current users.

Sponsored by <The NetBSD Foundation>

Drop SYS_vadvise

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

It is an obsolete remnant from the old UNIX.

Sponsored by <The NetBSD Foundation>

Drop SYS_sbrk

sbrk - change data segment size

This syscall is dummy since the inception of the project.

Sponsored by <The NetBSD Foundation>

Drop the sstk(2) syscall stub

sstk - change stack section size

This functionality has never been implemented and is a remnant from 16-bit
UNIX. This stub appeared with the first NetBSD commit.

Sponsored by <The NetBSD Foundation>

disable 32 bit signal ktrace records; 32 bit traced process produce 64 bit
trace records, the only record that we can't parse is that one :-)
XXX: pullup-8

update from HEAD

Sync with HEAD

Remove references to COMPAT_OLDSOCK (itself removed years ago).

Sync with HEAD - tag prg-localcount2-base1

move MAP_COPY in compat

Sync with HEAD

Sync with HEAD

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

Updated from the original patch in the PR by me.

Sync with HEAD

deal with not having KTRACE

Allow emulations to override the creation of ktrace records for posting
signals. In compat_netbsd32 use this to write the 32bit version of
the records, so a 32bit userland kdump is happy.

Trailing whitespace

+netbsd32__sched_protect

Sync with HEAD

clamp getrlimit the same way we clamp setrlimit

Sync with HEAD

Add missing newline character in error message

This is related to kern/50469.

Sync with HEAD (as of 26th Dec)

Adapt to per-emulation syscall_autoload capability (the table of syscalls
that can be autoloaded is currently empty).

Sync with HEAD

Lock before calling uvm_swap_stats(). Otherwise a race condition could
corrupt memory.

Implement trivial conversion for pset_*

Implement posix_fallocate and fdiscard compat

Fix a comment.

Rebase to HEAD as of a few days ago.

Rebase.

Just return sys_open(). COMPAT_10 will be handled internally.

ok christos@

Revert the following changes:

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

and do them correctly.

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

Hi, Joerg.

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

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

Sync getfh() with the native implementation. It also fixes:
a) a return value
b) a vnode lock
c) a user-controlled memory allocation

ok christos@, on tech-kern

Pull up following revision(s) (requested by maxv in ticket #1084):
	sys/compat/netbsd32/netbsd32_netbsd.c	rev. 1.187

Fix cases where count <= 0 (thanks to Maxime Villard for raising this).

Sync swapctl() with netbsd32. Return EINVAL when misc<0, and 0 when misc=0
or uvmexp.nswapdev=0.

delete -> remove

Don't t use a C++ keyword as field name.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

Fix cases where count <= 0 (thanks to Maxime Villard for raising this)

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

Fix a potential - but very unlikely - NULL pointer dereference.
(it does not introduce a new error code for open(), since
 pathbuf_copyin() is already there and can return ENOMEM)

Found by my code scanner.

Pull up following revision(s) (requested by manu in ticket #1025):
	sys/compat/netbsd32/netbsd32_netbsd.c: revision 1.184
	sys/uvm/uvm_swap.c: revision 1.166
	sys/uvm/uvm_swap.h: revision 1.20
	sys/compat/netbsd32/netbsd32.h: revision 1.99
Properly translate struct swapent for COMPAT_NETBSD32
 Properly translate struct swapent for COMPAT_NETBSD32  (missing commit)

Properly translate struct swapent for COMPAT_NETBSD32

ifdef debug printf

compat_10 fix: open(NULL) == open(".");

sync with head

sync with HEAD

Move *at syscall handlers to netbsd32_fs.c from netbsd32_netbsd.c
Fix netbsd32_fstatat to emit a 32bit stat structure.

sync with head

sync to -current.

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

merge to -current.

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

Update compat_netbsd32 for new quotactl.

Add missing *at syscalls among others

Add vfs_quotactl() in between the syscall and VFS_QUOTACTL. Call it
from the COMPAT_50 code as well as the current sys_quotactl instead
of going directly to VFS_QUOTACTL. Doesn't actually do anything yet.

Fix pipe2 return value.

sync with head

Add kqueue1(2) support.

Add dup3 syscall support.

Add pipe2 syscall now needed for popen(3).

Catchup with rmind-uvmplock merge.

sync with head

Sync with HEAD.

Delete some splurious commas and very unexpected trailing space

sync with head

Catch up with lim_privatise() change (missed in previous commit).

sync with head

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

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

sync with head

implement COMPAT_NETBSD32 quotactl syscalls (both new and COMPAT_50)

Proper definitions for quotactl

Snapshot of work in progress on a modernised disk quota system:
- new quotactl syscall (versionned for backward compat), which takes
  as parameter a path to a mount point, and a prop_dictionary
  (in plistref format) describing commands and arguments.
  For each command, status and data are returned as a prop_dictionary.
  quota commands features will be added to take advantage of this,
  exporting quota data or getting quota commands as plists.

- new on disk-format storage (all 64bit wide), integrated to metadata for
  ffs (and playing nicely with wapbl).
  Quotas are enabled on a ffs filesystem via superblock flags.
  tunefs(8) can enable or disable quotas.
  On a quota-enabled filesystem, fsck_ffs(8) will track per-uid/gid
  block and inode usages, and will check and update quotas in Pass 6.
  quota usage and limits are stored in unliked files (one for users,
  one for groups)l fsck_ffs(8) will create the files if needed, or
  free them if needed. This means that after enabling or disabling
  quotas on a filesystem; a fsck_ffs(8) run is required.
  quotacheck(8) is not needed any more, on a unclean shutdown
  fsck or journal replay will take care of fixing quotas.
  newfs(8) can create a ready-to-mount quota-enabled filesystem
  (superblock flags are set and quota inodes are created).
  Other new features or semantic changes:
  - default quota datas, applied to users or groups which don't already
    have a quota entry
  - per-user/group grace time (instead of a filesystem global one)
  - 0 really means "nothing allowed at all", not "no limit".
    If you want "no limit", set the limit to UQUAD_MAX (tools will
    understand "unlimited" and "-")

  A quota file is structured as follow:
  it starts with a header, containing a few per-filesystem values,
  and the default quota limits.
  Quota entries are linked together as a simple list, each entry has a
  pointer (as an offset withing the file) to the next.
  The header has a pointer to a list of free quota entries, and
  a hash table of in-use entries. The size of the hash table depends
  on the filesystem block size (header+hash table should fit in the
  first block). The file is not sparse and is a multiple of
  filesystem block size (when the free quota entry list is empty a new
  filesystem block is allocated). quota entries to not cross
  filesystem block boundaries.

  In memory, the kernel keeps a cache of recently used quota entries
  as a reference to the block number, and offset withing the block.
  The quota entry itself is keept in the buf cache.

fsck_ffs(8), tunefs(8) and newfs(8) supports are completed (with
related atf tests :)
The kernel can update disk usage and report it via quotactl(2).

Todo: enforce quotas limits (limits are not checked by kernel yet)
      update repquota, edquota and rpc.rquotad to the new world
      implement compat_50_quotactl ioctl.
      update quotactl(2) man page

fsck_ffs required fixes so that allocating new blocks or inodes will
properly update the superblock and cg sumaries. This was not an issue up
to now because superblock and cg sumaries check happened last, but now
allocations or frees can happen in pass 6.

Introduce struct pathbuf. This is an abstraction to hold a pathname
and the metadata required to interpret it. Callers of namei must now
create a pathbuf and pass it to NDINIT (instead of a string and a
uio_seg), then destroy the pathbuf after the namei session is
complete.

Update all namei call sites accordingly. Add a pathbuf(9) man page and
update namei(9).

The pathbuf interface also now appears in a couple of related
additional places that were passing string/uio_seg pairs that were
later fed into NDINIT. Update other call sites accordingly.

sync with head.

sync with head

Sync with HEAD.

Replace M_IOV and some malloc(9)s with kmem(9), and while there:
- Fix invalid free (M_TEMP vs M_IOV) in do_sys_recvmsg(), spotted by jakllsch@.
  Also, same fix in osf1_sys_sendmsg_xopen().
- Fix attempt to free non-allocated memory in error path in netbsd32___getfh30().
- Plug a memory leak in compat_43_netbsd32_orecvmsg().

sync with head

remove nfssvc emulation (or non-emulation)

-fs_lfs.h

remove unused lfs compat stubs

Merge from matt-nb5-mips64

Add missing semicolons after NETBSD32TOx_UAP macro calls.

Move saemul_netbsd32 to netbsd32_sa.c and allow the KERN_SA bits to be omitted.

Kill redundant assignment.

Initialise struct emul members by name (it is readable now and one can search
them in the tree).

Move netbsd32___mount50 from netbsd32_netbsd.c to netbsd32_fs.c

Add support for netbsd32___mount50.  There's got to be a better of doing this.
Maybe pushing it down to vfs.  This only supports mfs/ufs/cd9660 and probably
tmpfs.

sync with head.

Add enum uio_seg argument to do_sys_mknod and do_sys_mkdir so these functions
can be called from kernel, too.

Change needed for zfs device node creation, until we have propoer devfs.

Oked by ad@.

Sync with HEAD.

sync with head

pad -> PAD.  Fixes build problem reported by Paul Goyette in private email.

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

sync with head.

Sync with HEAD.

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

ok by cube@.

Fix the posix_fadvise return value... finally.

Tested martin on sparc64/m68k and me on hppa.

Sync with HEAD.

Cleanup. Kill a few netbsd32_caddr_t in syscalls argument types.

Revert accidental of some rogue changes which broke the build.

Include "bsd.own.mk" to get the definition of "NETBSDSRCDIR" via
"/etc/mk.conf". This fixes manual use of "make cleandir".

Sync with HEAD.

Sync with HEAD.

Follow christos-time_t merge.

merge christos-time_t

add new syscalls.

Update haad-dm branch to haad-dm-base2.

Pull up following revision(s) (requested by mrg in ticket #121):
	sys/compat/netbsd32/syscalls.master: revision 1.74
	sys/compat/netbsd32/netbsd32.h: revision 1.78
	sys/compat/netbsd32/netbsd32_netbsd.c: revision 1.149
implement netbsd32__sched_setparam(), netbsd32__sched_getparam(),
netbsd32__sched_setaffinity() and netbsd32__sched_getaffinity().

file netbsd32_netbsd.c was added on branch christos-time_t on 2009-01-04 01:56:02 +0000

implement netbsd32__sched_setparam(), netbsd32__sched_getparam(),
netbsd32__sched_setaffinity() and netbsd32__sched_getaffinity().

Pull up following revision(s) (requested by tron in ticket #100):
	sys/compat/netbsd32/netbsd32_netbsd.c: revision 1.148
	sys/compat/netbsd32/netbsd32_sa.c: revision 1.8
Make it possible to compile a kernel with COMPAT_NETBSD32 but without
COMPAT_40. This fixes PR port-amd64/39967.

Make it possible to compile a kernel with COMPAT_NETBSD32 but without
COMPAT_40. This fixes PR port-amd64/39967.

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

Remove LKMs and switch to the module framework, pass 1.

Proposed on tech-kern@.

Sync with HEAD.

Merge wrstuden-revivesa into HEAD.

Adapt the SA COMPAT_NETBSD32 stuff to this branch.

Add support for compiling SA as an option. Implied by COMPAT_40.

i386 kernels both with COMPAT_40 and with no compat options (and thus
no SA) compile.

No functional changes intended.

Add getucontext32_sa() and getucontext_sa(), and use them. They
are sa-specific versions of getucontext{,32}(). The main difference
is that they do NOT require the p_lock be held. We report an empty
signal mask, both to avoid needing p_lock and because the process
signal mask is almost always 0 for SA.

Sync w/ -current. 34 merge conflicts to follow.

sync with head

Sync with HEAD.

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

Initial checkin of re-adding SA. Everything except kern_sa.c
compiles in GENERIC for i386. This is still a work-in-progress, but
this checkin covers most of the mechanical work (changing signalling
to be able to accomidate SA's process-wide signalling and re-adding
includes of sys/sa.h and savar.h). Subsequent changes will be much
more interesting.

Also, kern_sa.c has received partial cleanup. There's still more
to do, though.

Sync with HEAD.

sync with head.

sync with head.

sync with HEAD

Catch up with descriptor handling changes. See kern_descrip.c revision
1.173 for details.

sync with head.

Remove old posix_fadvise compat code

Sync with HEAD.

sync with head.

wrong argument type

Catch up with versioning of posix_fadvise

Call do_posix_fadvise() in netbsd32_posix_fadvise()

Split the return value of sys_lseek() into two 32 bit halves for retval[0/1]
in a manner that is endianness independant.
Should mean the amd64 will return correct offsets > 2^32 (sparc64 had a
special define).
Any new netbsd32 ports should work regardless of the endianness.

Don't try to bound the return value for pread/pwrite/pathconf by casting
an 'ssize_t' or 'long' variable to 'register_t'.
If the sizes were different it would either overwrite stack or return
uninitialised stack.  On big-endian systems things would be worse!

Add a wrapper for posix_fadvise()

sync with head

Sync with HEAD

Add netbsd32 wrapper for sys_mremap(), compiles, and assuming the mmap()
wrapper is ok, it should work!
I presume the kernel knows not to map above 4GB though....

sync with HEAD

Sync with HEAD

Sync with HEAD.

Sync with head.

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.

sync with head.

Sync with HEAD.

Remove last argument from NDINIT call, following
"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." from pooka.

ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

Sync with HEAD.

Sync with head.

sync with head

Remove all the __P

Sync with HEAD.

sync with head.

Sync with HEAD

Sync with HEAD.

Fix builds for ports that don't define __HAVE_MINIMAL_EMUL (eg sparc64).
Fallout from a change that made #define names for syscalls (etc) start
NETBSD32 (not netbsd32).

Add arguments to sys_syscall and sys___syscall.
Use MI wrappers for them in netbsd32.
Change prefix for constants from netbsd32 to NETBSD32 (used in #defines etc).

sync with HEAD

sync with head.

Sync with head.

sync with head.

Sync with HEAD.

Change the way p->p_limit (and hence p->p_rlimit) is locked.
Should fix PR/36939 and make the rlimit code MP safe.
Posted for comment to tech-kern (non received!)

The p_limit field (for a process) is only be changed once (on the first
  write), and a reference to the old structure is kept (for code paths
  that have cached the pointer).
Only p->p_limit is now locked by p->p_mutex, and since the referenced memory
  will not go away, is only needed if the pointer is to be changed.
The contents of 'struct plimit' are all locked by pl_mutex, except that the
  code doesn't bother to acquire it for reads (which are basically atomic).
Add FORK_SHARELIMIT that causes fork1() to share the limits between parent
  and child, use it for the IRIX_PR_SULIMIT.
Fix borked test for both IRIX_PR_SUMASK and IRIX_PR_SDIR being set.

Rename members of 'struct plimit' so that the fields are 'pl_xxx' and
no longer have the same names as members of 'struct proc'.

sync with head.

Sync with HEAD.

Sync with HEAD.

Sync with HEAD.

Changes to make ktrace LKM friendly and reduce ifdef KTRACE. Proposed
on tech-kern.

Sync with head.

Adapt for sys_mount() becoming compat_40_sys_mount(),

Sync with head.

Changes to sompat socket function to avoid the dreaded stackgap.

Sync with head.

sync with head.

Delete a diagnostic printf and some unused 'stack gap' initialisation.

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.

Sync with head.

Pullup to -current

sync with head.

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

First attempt to bring branch in sync with HEAD

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.

Sync with HEAD.

fix fallout from caddr_t changes.

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

- sync with head.
- move sched_changepri back to kern_synch.c as it doesn't know PPQ anymore.

sync with head.

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

The libpthread regression tests now pass on amd64 and sparc64.

Merge newlock2 to head.

- When clearing signals dequeue siginfo first and free later, once
  outside the lock permiter.
- Push kernel_lock back in a a couple of places.
- Adjust limcopy() to be MP safe (this needs redoing).
- Fix a couple of bugs noticed along the way.
- Catch up with condvar changes.

Remove support for SA. Ok core@.

Sync with head.

sync with head.

sync with head.

deal with RLIM_INFINITY in the setrlimit case.

Simplify previous commit not to use dosetrlimit(), since we don't want the
kauth tests etc.

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.

Sync with head.

Clean some KAUTH_GENERIC_ISSUSER usage in compat code.

sync with head

sync with head.

When calling PTRACE from an LKM, use sysent[SYS_ptrace].sy_call in case
the sys_ptrace symbol isn't present.

Protect netbsd32_ptrace with options PTRACE.

sync with head

Make filehandles opaque to userland

Use the LWP cached credentials where sane.

do not protect the getfh syscall by
#if defined(NFS) || defined(NFSSERVER).
The native syscall also isn't.

Merge from HEAD.

Fix alignement problems for fhandle_t, exposed by gcc4.1.

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

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

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.

sync with head.

Sync with head.

Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.

sync with head.

integrate kauth.

include sys/kauth.h where appropriate.

sync with head

use socklen_t where appropriate.

Move fhstat as sys___fhstat30 in netbsd32_fs.c because it doesn't belong
to netbsd32_netbsd.c (which incidentally means it had been broken for a
while I guess).  Add compat_30 version.

Sync with head.

sync with head.

zap unused var

sync with head.

Merge 2006-03-31 NetBSD-current into the "peter-altq" branch.

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

Use kauth_cred_[sg]etgroups() where appropriate.

Adapt to kernel authorization KPI.

sync with head.

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

merge ktrace-lwp.

Sync with HEAD. Here we go again...

Pull up following revision(s) (requested by fvdl in ticket #798):
	sys/compat/sunos/sunos_exec.c: revision 1.47
	sys/compat/pecoff/pecoff_emul.c: revision 1.11
	sys/arch/sparc64/sparc64/netbsd32_machdep.c: revision 1.45
	sys/arch/amd64/amd64/netbsd32_machdep.c: revision 1.12
	sys/sys/proc.h: revision 1.198
	sys/compat/mach/mach_exec.c: revision 1.56
	sys/compat/freebsd/freebsd_exec.c: revision 1.27
	sys/arch/sparc64/include/vmparam.h: revision 1.27
	sys/kern/kern_resource.c: revision 1.91
	sys/compat/netbsd32/netbsd32_netbsd.c: revision 1.88
	sys/compat/osf1/osf1_exec.c: revision 1.39
	sys/compat/svr4_32/svr4_32_resource.c: revision 1.5
	sys/compat/ultrix/ultrix_misc.c: revision 1.99
	sys/compat/svr4_32/svr4_32_exec.h: revision 1.9
	sys/kern/exec_elf32.c: revision 1.103
	sys/compat/aoutm68k/aoutm68k_exec.c: revision 1.19
	sys/compat/sunos32/sunos32_exec.c: revision 1.20
	sys/compat/hpux/hpux_exec.c: revision 1.46
	sys/compat/darwin/darwin_exec.c: revision 1.40
	sys/kern/sysv_shm.c: revision 1.83
	sys/uvm/uvm_extern.h: revision 1.99
	sys/uvm/uvm_mmap.c: revision 1.89
	sys/kern/kern_exec.c: revision 1.195
	sys/compat/netbsd32/netbsd32.h: revision 1.31
	sys/arch/sparc64/sparc64/svr4_32_machdep.c: revision 1.20
	sys/compat/svr4/svr4_exec.c: revision 1.56
	sys/compat/irix/irix_exec.c: revision 1.41
	sys/compat/ibcs2/ibcs2_exec.c: revision 1.63
	sys/compat/svr4_32/svr4_32_exec.c: revision 1.16
	sys/arch/amd64/include/vmparam.h: revision 1.8
	sys/compat/linux/common/linux_exec.c: revision 1.73
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.

Fix lossage I created with the 64 bit ino_t change.

When returning 64bit values (from netbsd32_lseek) fix up the return
value vector (of 32bit values, most likely) via a MD macro.

Add the *xattr(2) family of syscalls.  Just like the *extattr(2) family,
they're waiting for an actual FS back-end to be tested, but are still
straightforward enough.

Add rasctl(2).  Thanks to the regression tests for that syscall, I was able
to discover the bugs in netbsd32_setitimer() and netbsd32_execve().

Add support for fsync_range(2).

Implement __clone(2).

Add mlockall(2) and munlockall(2).

Implement the extattr(3) family of syscalls.

XXX However, those remain untested as there are currently no backend for
XXX extattr(9) in NetBSD.

Implement uuidgen(2).

track change to swapctl args in kern/syscalls.master.

sync with -current

Sync with HEAD.

sync with head.

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.

sync with head.  xen and whitespace.  xen part is not finished.

Sync with HEAD.

Hi Perry!

nuke trailing whitespace

Fix the sync with head I botched.

Sync with HEAD.

Adapt to branch.

sparc64 GENERIC compiles.

Sync with HEAD

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

Reviewed by christos@.

Add the missing 'v' to fhstatvfs1

try to make this compile. XXX: this will not work yet (hi simon)

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

use netbsd32_sigcode with COMPAT_16 only

fix a (syscall args) comment.

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

Dynamic sysctl.

Gone are the old kern_sysctl(), cpu_sysctl(), hw_sysctl(),
vfs_sysctl(), etc, routines, along with sysctl_int() et al.  Now all
nodes are registered with the tree, and nodes can be added (or
removed) easily, and I/O to and from the tree is handled generically.

Since the nodes are registered with the tree, the mapping from name to
number (and back again) can now be discovered, instead of having to be
hard coded.  Adding new nodes to the tree is likewise much simpler --
the new infrastructure handles almost all the work for simple types,
and just about anything else can be done with a small helper function.

All existing nodes are where they were before (numerically speaking),
so all existing consumers of sysctl information should notice no
difference.

PS - I'm sorry, but there's a distinct lack of documentation at the
moment.  I'm working on sysctl(3/8/9) right now, and I promise to
watch out for buses.

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)

Add necessary include file.

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.

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

struct proc * -> struct lwp *

Make sure to include opt_foo.h if a defflag option FOO is used.

Merge the nathanw_sa branch.

Merge pcred and ucred, and poolify.  TBD: check backward compatibility
and factor-out some higher-level functionality.

Sync with HEAD.

After a discussion with various folks, fix the strict-alias warning
by ditching 'void *rt' and passing retval directly to sys_mmap().

Avoid strict-alias warnings.

Catch up to -current

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

In preparation for COMPAT_NETBSD32 on SH-5:

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

Tested on Sparc64 by Matt Green.

Catch up to -current.

sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work

- 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.

sync kqueue branch with HEAD

lwpification.

Catch up to -current.

catch up with -current.

Move netbsd32_sysarch to netbsd32_machdep.c

catch up with -current on kqueue branch

#include <sys/sa.h> before <sys/syscallargs.h>, to provide sa_upcall_t
now that <sys/param.h> doesn't include <sys/sa.h>.

(Behold the Power of Ed)

Catch up to -current.
(CVS: It's not just a program. It's an adventure!)