Remove sys/compat/common/Makefile.*.

These files are not used anymore. Files for compat code are listed in
sys/comapt/common/files.common and sys/modules/compat_xxx/Makefile.
OK'd by riastradh@ and pgoyette@.

PR port-xen/53130 was fixed and closed some time ago, so now we can
belatedly re-enable inclusion of the compat_60 x86 microcode code in
the loadable module. (It was already being included in the built-in
version of the module.)

branches: 1.65.16; 1.65.18;
Merge the [pgoyette-compat] branch

branches: 1.64.2;
use the standard rules, instead of rolling our own.

branches: 1.63.2;
Pass LDFLAGS to ld.

Without this, mips64-ld thinks we want to link our n64 objects with the
default ABI, n32.

compat_util.c must be compiled by default in the kernel. It is needed by
generic non-compat code, so it must not depend on anything (libcompat or
whatever option we choose to associate it to).

typos

Move if_43.c back into the shared Makefile.sysio where it really
belongs.

Update the code to invoke the two routines compat_cvtcmd() and
compat_ifioctl() through indirect pointers. Initialize those
pointers in sys/net/if.c and update them in the compat module's
initialization code.

Addresses the issue pointed out in PR kern/51598

Move if_43.c out of Makefile.sysio and into the main Makefile.

The former location gets included in both libcompat and the compat
module, leading to redefined symbols when the module is loaded. By
moving it to the main Makefile, it gets included only in libcompat.

XXX This still isn't an ideal solution, but it will suffice until
XXX PR kern/51598 is addressed.

Reorganize SRCS lists for libcompat, compat.kmod, sysv_ipc.kmod.

- Share lists between the libcompat and module makefiles.
- Include some omitted entries in compat.kmod:
. if_43.c
. kern_sa_60.c
. kern_time_30.c
. rndpseudo_50.c
. rtsock_14.c
. rtsock_50.c
. rtsock_70.c
. uipc_syscalls_40.c
. uipc_syscalls_50.c
- Exclude a (harmless) spurious entry in sysv_ipc.kmod on LP64 systems:
. kern_ipc_10.c

Should fix broken ifconfig on modular current kernels.

ok pgoyette

Add ifam_pid and ifam_addrflags to ifa_msghdr.
Re-version RTM_NEWADDR, RTM_DELADDR, RTM_CHGADDR and NET_RT_IFLIST.
Add compat code for old version.

branches: 1.56.2;
Add sc_pid to sockcred so that SOCK_DGRAM and LOCAL_CREDS socket option
can learn the process id of the AF_LOCAL sender.
Add compat glue for old structure.

remove a bunch of "@echo done" from the tail of rules. these messages
were vaguely useful back when we didn't run make -j, but now you end
up with a single line "done" every so often, with no idea what it is
for. very few other targets claim they're done so just remove these.

Order library object build.

Sprinkle more done messages.

branches: 1.52.6;
Move a few compat 50 syscalls, not applicable to rump kernels, out of
kern_time_50.c to a new source module.

branches: 1.51.4;
compat glue for new lwp_park()

Add COMPAT_60 versions of the TIOCPTMGET and TIOCPTSNAME ioctls.

branches: 1.49.2;
Add compat_60 stub for the SA syscall (all which just call sys_nosys).

Add COMPAT_50 and COMPAT_NETBSD32 compatibility code for rnd(4)
ioctl commands.

Tested with "rndctl -ls" using an old 32-bit version of rndctl(8)
(built for NetBSD-5.99.56/i386) and a new 64-bit kernel
(NetBSD-5.99.59/amd64).

branches: 1.47.2; 1.47.6;
add libcompat.o/.po targets for COMPAT_AS=obj

Put async i/o compat routines in a separate source module from the
ones related to clock and process management.

branches: 1.45.6; 1.45.8;
Provide compatibility for pre-christos-time_t sysv sysctls.

merge christos-time_t

- Move some more compat code into sys/compat.
- Split 4.3BSD ifioctl stuff into its own file.
- Remove some ifdefs that include small fragments of vfs compat code
which are difficult to relocate elsewhere.

branches: 1.42.2; 1.42.6; 1.42.12; 1.42.14;
Remove compat code for posix_fadvise

branches: 1.41.2; 1.41.6;
Implement new version of posix_fadvise as a stub callinig the real
worker function, and compatibility stub doing the same with old argument
sturcture.

compat_file.[ch] are no longer used

branches: 1.39.8; 1.39.14; 1.39.16; 1.39.18; 1.39.20;
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: 1.38.2;
Update all the compat stuff to not use the 'stackgap' for processing
sys_stat() and friends, instead use do_sys_stat() and do_sys_fstat()
that write the answer into a kernel buffer (on stack) that can be
converted to the correct form and written the userspace.
I've test compiled a few kernels, and tested i386 netbsd1.6 ls.
Given I think I've fixed some bugs, it might be 50-50 with new ones.

branches: 1.37.10; 1.37.14;
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: 1.36.4; 1.36.8; 1.36.16;
merge ktrace-lwp.

64 bit inode changes.

branches: 1.34.4;
nuke trailing whitespace

branches: 1.33.4; 1.33.6;
Replace the statfs() family of system calls with statvfs().
Retain binary compatibility.

Don't put the netbsd32_compat*.c files in the 'compat library'. Unconditionally
compiling these causes a ripple effect making it hard to conditionalize
anything on COMPAT_* in the kernel.

branches: 1.31.6;
Introduce BSD system calls with alternate patch checking (in /emul) in
compat/common, so that they can be shared by several emulations, and use
them for Darwin.

This removes the ugly dependance on FreeBSD freebsd_file.c for COMPAT_DARWIN

set LLIBS= so we don't try to check the lint lib against llib-lc.ln

Updated version of cscope/mkid support. Check libkern and compat lib
for source files. Also include header files in mkid run.

branches: 1.28.2; 1.28.4;
build the netbsd32_compat* objects into libcompat.a, so they are available
to emulations not just netbsd itself. rename the compat_10 functions to
match everything else. fixes a problem reported by julian coleman.

MKfoo=no -> NOfoo

Preload <bsd.own.mk> before .undef DESTDIR.

Undefine DESTDIR; we don't want the special DESTDIR <bsd.lib.mk>
handling for kernel libraries.

XXX this build method should be replaced by something more sane

branches: 1.24.14; 1.24.16;
Add compatibility calls for the 1.4 System V IPC *ctl() calls, and
update the 1.0 compat calls.

Build libraries for kernel/standalone code from within their compilation
directories and use .PATH to lookup the source files.
(Formerly, the libs were built from the source dirs, with MAKEOBJDIR
set to the compilation directory.)
This solves 2 problems:
-"mkdep" and "make" are now consistent about the file lookup, this fixes
bad interactions with amd reported in PR bin/7374 (Arne Juul) and
lossage reported by Andrew Gillham ("obj" dirs and relative paths still
don't work well together)
-kernel compile trees can be moved around without forcing a new
"make depend" - fixing PR kern/4021 by Martin Husemann

branches: 1.22.4;
convert from NOxxx= to MKxxx=no.
include <bsd.own.mk> if testing a MKxxx variable.

Make adding new source files easier and enhance readability by ordering SRCS
items by (Net)BSD version first, then alphabetically.

In XPG4.2, the ss_size member of type stack_t (struct sigaltstack) is specified
to be of type size_t; since this imposes an interface change on the Alpha
(sizeof(int) != sizeof(size_t)), allocate a new system call number and make
the previous version a compatibility system call.

PR/4269: msync is missing MS_*

Add getdirentries backward compat syscall. Provide common function to
signal cookie overflow during emulated getdents and friends.

branches: 1.17.4;
bring mrg-vm-swap2 onto mainline.

Back out BUILDDIR and NOINSTALL changes.

branches: 1.15.2;
Use new NOINSTALL option for libraries that are used only during the build
of a program, and not installed into the final system.

Use libinstall::, not install:, to prevent instaling LIB.

branches: 1.13.8;
Spelling error

Change reboot(2) to take two arguments: bootopt like normal and also
a boot string for firmware that can do this, such as the SPARC and
the sun3 models. It is currently silently ignored on all other
hardware now, however. The MD function "boot()" has been changed to
also take a char *.

Run the child make in the source directory, so that nothing here needs to be
changed when the compile directory is outside the source tree.

Fix mysterious dissappearance of the .PATH directive.

Remove the old (broken) setre[ug]id() emulation.

branches: 1.8.4;
- Moving cpu_exec_aout_prep_oldzmagic -> exec_aout_prep_oldzmagic.
This is used by the i386, hp300 and mac68k ports.
- Added exec_aout_prep_oldomagic, and exec_aout_prep_oldnmagic
These are just copies of the respective prep functions from
kern_exec.c with text address starting at 0. Maybe a better fix
is to pass the starting address as a third argument so we don't
duplicate code, but this could be the next pass since the functions
are used in many places. These functions are used for BSDI binaries.

Extracted vm compat functions from vm and added them here where they belong.

Simplify, and add support for passing CPPFLAGS.

Renamed compat_tty.c to tty_43.c and updated with the newest copy from
kern/tty_compat.c

set, don't add to, CFLAGS from COMPATCFLAGS

light cleanup, adjustments for the Alpha

Add the ability to override COMPATREL and COMPATDST similar to libkern

- Extracted all compat routines from the kern directory and moved here.
- Created compat_util.c and compat_util.h to be used by the compatibility
modules, so they don't duplicate the same code.
- Added prototypes to the stackgap allocation routines.

Remove sys/compat/common/Makefile.*.

These files are not used anymore. Files for compat code are listed in
sys/comapt/common/files.common and sys/modules/compat_xxx/Makefile.
OK'd by riastradh@ and pgoyette@.

Merge the [pgoyette-compat] branch

branches: 1.25.2;
- Introduce :q modifier for make variables and make it double escape $'s so
that passing variables to recursive makes with :q works as expected.
- Revert :Q to work as before.
- Adjust makefiles that use recursive make to use :q

Discussed on tech-toolchain@
XXX: pullup 8

If we are modular, allow us to use modules for compat; don't load all the
compat code in.

branches: 1.23.2;
Build libcompat as an object, not as a library. We want all of its
functions compiled in, because compat modules loaded from the filesystem
may depend on them.

branches: 1.22.10;
remove a bunch of "@echo done" from the tail of rules. these messages
were vaguely useful back when we didn't run make -j, but now you end
up with a single line "done" every so often, with no idea what it is
for. very few other targets claim they're done so just remove these.

In kernel lib build, print message when things not only start bug also end.

branches: 1.20.40;
Merge from matt-nb5-mips64

branches: 1.19.108; 1.19.128;
Add lint infrastructure

branches: 1.18.2;
Have recursive make invocations depend on the .MAKE pseudo-target so
make knows to handle them specially.

Revert STRIPPROG -> STRIP

STRIP -> STRIPPROG

branches: 1.15.2;
Build libraries for kernel/standalone code from within their compilation
directories and use .PATH to lookup the source files.
(Formerly, the libs were built from the source dirs, with MAKEOBJDIR
set to the compilation directory.)
This solves 2 problems:
-"mkdep" and "make" are now consistent about the file lookup, this fixes
bad interactions with amd reported in PR bin/7374 (Arne Juul) and
lossage reported by Andrew Gillham ("obj" dirs and relative paths still
don't work well together)
-kernel compile trees can be moved around without forcing a new
"make depend" - fixing PR kern/4021 by Martin Husemann

branches: 1.14.8;
distclean is a synonym for cleandir

Pass down the values of: AR NM RANLIB
(Fixes PR#4426 from SAITOH Masanobu)
Also pass down LORDER TSORT.

clean up substantially. Transform clean, depend, cleandir targets from ::
to :, so they can be used e.g. with <bsd.prog.mk>. Standardize variable
names used to configure kernel libraries.

Variables used by these Makefile.inc's are:

S must be set to the top of the 'sys' tree.
${LIB}DST may be set to the location of the directory where library
objects are to be built. Defaults to ${.OBJDIR}/lib/${lib}.
${LIB}_AS may be set to 'obj' to build a object from the library's
object files. (Otherwise, a library will be built.)
Defaults to 'library'.
${LIB}MISCMAKEFLAGS
Miscellaneous flags to be passed to the library's Makefile when
building. See library's Makefile for more details about
supported flags and their default values.

(where LIB is COMPAT, and lib is compat, in this case.)

PR/2981: use ${VAR:Q} instead of '${VAR}' to avoid quoting problems

Handle relative paths to the source tree if they begin with '.'.

Add anchors so that only exactly `-I. is modified.

Convert the -I. to -I${.OBJDIR}, so that the `machine symlink is available.

We dont need to pass down COMPATDIR and KERNDIR.

Run the child make in the source directory, so that nothing here needs to be
changed when the compile directory is outside the source tree.

use ' not " when passing variables to a sub-make. pr#1199/pr#1296

Make `make depend' work for libraries.

Simplify, and add support for passing CPPFLAGS.

Add the ability to override COMPATREL and COMPATDST similar to libkern

- Extracted all compat routines from the kern directory and moved here.
- Created compat_util.c and compat_util.h to be used by the compatibility
modules, so they don't duplicate the same code.
- Added prototypes to the stackgap allocation routines.

Remove sys/compat/common/Makefile.*.

These files are not used anymore. Files for compat code are listed in
sys/comapt/common/files.common and sys/modules/compat_xxx/Makefile.
OK'd by riastradh@ and pgoyette@.

s/compatability/compatibility/ in comment.

fix various typos in compatibility, mainly in comments.

Split the module glue out from the rest of opencrypto/ocryptodev to
make rump happy.

Rump doesn't have compat modules (the compat code is included in the
relevant librump*.so), so there's no module compat_50 listed in
link_set_modules, and thus ocryptodev's MODULE(...) can't "require"
it.

This fixes the problem of "built-in module compat_50 not found" when
starting up rump_allserver (or rump_server with -l rumpdev_opencrypto).

XXX This does not resolve the long-standing "crypto: unable to
XXX register devsw, error 17" message noted at line 78 of
XXX sys/rump/dev/lib/libopencrypto/opencrypto_component.c

branches: 1.12.4;
The max subtype of the ifmedia word is 31. It's too small for Ethernet now.
We currently use use it up to 30. We should extend the limit to be able to use
more than 10Gbps speeds. Our ifmedia(4) is inconvenience and have some problem
so we should redesign the interface, but it's too late for netbsd-9 to do it.
So, we keep the data structure size and modify the structure a bit. The
strategy is almost the same as FreeBSD. Many bits of IFM_OMASK for Ethernet
have not used, so use some of them for Ethernet's subtype.

The differences against FreeBSD are:
- We use NetBSD style compat code (i.e. no SIOCGIFXMEDIA).
- FreeBSD's IFM_ETH_XTYPE's bit location is from 11 to "14" even though
IFM_OMASK is from 8 to "15". We use _IFM_ETH_XTMASK from bit 13 to "15".
- FreeBSD changed the meaning of IFM_TYPE_MATCH(). I think we should
not do it. We keep it not changing and added new IFM_TYPE_SUBTYPE_MATCH()
macro for matching both TYPE and SUBTYPE.
- Added up to 400GBASE-SR16.

New layout of the media word is as follows (from ifmedia_h):

* if_media Options word:
* Bits Use
* ---- -------
* 0-4 Media subtype MAX SUBTYPE == 255 for ETH and 31 for others
* 5-7 Media type
* 8-15 Type specific options
* 16-18 Mode (for multi-mode devices)
* 19 (Reserved for Future Use)
* 20-27 Shared (global) options
* 28-31 Instance
*
* 3 2 1
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-------+---------------+-+-----+---------------+-----+---------+
* | | |R| | | | |
* | IMASK | GMASK |F|MMASK+-----+ OMASK |NMASK| TMASK |
* | | |U| |XTMSK| | | |
* +-------+---------------+-+-----+-----+---------+-----+---------+
* <-----> <---> <--->
* IFM_INST() IFM_MODE() IFM_TYPE()
*
* IFM_SUBTYPE(other than ETH)<------->
*
* <---> IFM_SUBTYPE(ETH)<------->
*
*
* <-------------> <------------->
* IFM_OPTIONS()

Merge the [pgoyette-compat] branch

branches: 1.10.2;
factor out the ccd COMPAT_60 code.

redo the cpu ucode compat code.

add uvm swap compat code.

branches: 1.7.2; 1.7.16; 1.7.18;
Move if_43.c back into the shared Makefile.sysio where it really
belongs.

Update the code to invoke the two routines compat_cvtcmd() and
compat_ifioctl() through indirect pointers. Initialize those
pointers in sys/net/if.c and update them in the compat module's
initialization code.

Addresses the issue pointed out in PR kern/51598

branches: 1.6.2;
Move if_43.c out of Makefile.sysio and into the main Makefile.

The former location gets included in both libcompat and the compat
module, leading to redefined symbols when the module is loaded. By
moving it to the main Makefile, it gets included only in libcompat.

XXX This still isn't an ideal solution, but it will suffice until
XXX PR kern/51598 is addressed.

Hmmm, if we omit if_43.c from the SRCS list, then we break the i386
build for one of the XEN kernels.

Adding it back to the list. At least the build will be successful.

XXX This is probably not the end of this saga, as we still have the
XXX redefined-symbol issue when loading the compat module on amd64.
XXX But for now, a working build for the vast majority of users
XXX (including our automated test suites) is more important than a
XXX successfully-loadable compat module.

Really comment out if_43.c this time. (I need sleep and/or caffeine.)

Use proper characgter to introduce comments!

if_43.o gets included from libcompat automatically, due to two calls
to compat_cvtcmd() in if.c. Ideally, if.c would be modified to have
a pointer to a no-op compat_cvtcmd() and that pointer would get
replaced by compat_modcmd(MODULE_CMD_INIT, ...) code. But for now,
just don't include it in the compat module at all.

Reorganize SRCS lists for libcompat, compat.kmod, sysv_ipc.kmod.

- Share lists between the libcompat and module makefiles.
- Include some omitted entries in compat.kmod:
. if_43.c
. kern_sa_60.c
. kern_time_30.c
. rndpseudo_50.c
. rtsock_14.c
. rtsock_50.c
. rtsock_70.c
. uipc_syscalls_40.c
. uipc_syscalls_50.c
- Exclude a (harmless) spurious entry in sysv_ipc.kmod on LP64 systems:
. kern_ipc_10.c

Should fix broken ifconfig on modular current kernels.

ok pgoyette

Remove sys/compat/common/Makefile.*.

These files are not used anymore. Files for compat code are listed in
sys/comapt/common/files.common and sys/modules/compat_xxx/Makefile.
OK'd by riastradh@ and pgoyette@.

branches: 1.1.2; 1.1.4; 1.1.18;
Reorganize SRCS lists for libcompat, compat.kmod, sysv_ipc.kmod.

- Share lists between the libcompat and module makefiles.
- Include some omitted entries in compat.kmod:
. if_43.c
. kern_sa_60.c
. kern_time_30.c
. rndpseudo_50.c
. rtsock_14.c
. rtsock_50.c
. rtsock_70.c
. uipc_syscalls_40.c
. uipc_syscalls_50.c
- Exclude a (harmless) spurious entry in sysv_ipc.kmod on LP64 systems:
. kern_ipc_10.c

Should fix broken ifconfig on modular current kernels.

ok pgoyette

malloc(9) -> kmem(9)

branches: 1.4.8;
Rather than keeping a separate mutex, condvar, and pserialize for each
module hook, we can share a common set of synchronization structures.
This cuts the amount of cacheline_aligned data for these structures by
50%.

Note that we still have a per-hook localcount, since we need to count
individual references.

As discussed with riastradh@

Welcome to 9.99.22 !

branches: 1.3.4;
Rename the MODULE_*_HOOK() macros to MODULE_HOOK_*() as briefly
discussed on irc.

NFCI intended.

Ride the earlier kernel bump - it;s getting crowded.

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file bio_30.c was initially added on branch pgoyette-compat.

Rather than keeping a separate mutex, condvar, and pserialize for each
module hook, we can share a common set of synchronization structures.
This cuts the amount of cacheline_aligned data for these structures by
50%.

Note that we still have a per-hook localcount, since we need to count
individual references.

As discussed with riastradh@

Welcome to 9.99.22 !

Rename the MODULE_*_HOOK() macros to MODULE_HOOK_*() as briefly
discussed on irc.

NFCI intended.

Ride the earlier kernel bump - it;s getting crowded.

make this compile again (enable #if 0 code)

Merge the [pgoyette-compat] branch

branches: 1.7.2;
XXX stub it completely for now to make it compile

XXX: don't reference the global for now so that kernels without ccd build.

remove another error decl.

remove error decl

- use the conditional from the header file
- fix compilation

Declare 'error' if needed

branches: 1.1.2;
factor out the ccd COMPAT_60 code.

Rather than keeping a separate mutex, condvar, and pserialize for each
module hook, we can share a common set of synchronization structures.
This cuts the amount of cacheline_aligned data for these structures by
50%.

Note that we still have a per-hook localcount, since we need to count
individual references.

As discussed with riastradh@

Welcome to 9.99.22 !

branches: 1.3.4;
Rename the MODULE_*_HOOK() macros to MODULE_HOOK_*() as briefly
discussed on irc.

NFCI intended.

Ride the earlier kernel bump - it;s getting crowded.

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file clockctl_50.c was initially added on branch pgoyette-compat.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_09_mod.c was initially added on branch pgoyette-compat.

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.

Add epoll(2) from Theodore Preduta as part of GSoC 2023

Create compat_100 module infrastructure now that we have branched
for NetBSD-10

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_10_mod.c was initially added on branch pgoyette-compat.

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

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_12_mod.c was initially added on branch pgoyette-compat.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_13_mod.c was initially added on branch pgoyette-compat.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_14_mod.c was initially added on branch pgoyette-compat.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_16_mod.c was initially added on branch pgoyette-compat.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_20_mod.c was initially added on branch pgoyette-compat.

For the built-in COMPAT_30 module code, make sure to initialize the
uipc_syscalls_30 stuff, notably to include compat_30_socket().

PR kern/54804

XXX Pullup-9 XXX

branches: 1.2.4; 1.2.6;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_30_mod.c was initially added on branch pgoyette-compat.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_40_mod.c was initially added on branch pgoyette-compat.

branches: 1.3.4;
- provide a hook for the 43 tty ioctls
- make the 60 tty ioctl hook look the same
- fix the tty code to call both hooks and remove unused lock

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_43_mod.c was initially added on branch pgoyette-compat.

s/occured/occurred/ in comments, log messages and man pages.

branches: 1.3.4;
Split the COMPAT_50 socket-timeout stuff out of kern/uipc_socket.c
and into its own source file, which is now included in the compat_50
module.

(Not sure how this got missed during the original [pgoyette-compat] work)

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_50_mod.c was initially added on branch pgoyette-compat.

compat_50_quota: reject invalid quota id types.

Reported-by: syzbot+ce8391eb74a16e1967ab@syzkaller.appspotmail.com

branches: 1.3.2;
The compat_50_quota code needs quota support from ufs. Add dependency.

branches: 1.2.2;
Since this used to be part of the compat_50 module, make it depend on
compat_50 rather than compat_60 module.

Split the compat_50 module into two, separating the QUOTA-related
stuff from the rest of the module. This allows loading of the
(main) compat_50 module on kernels that don't include ``options
QUOTA''.

Welcome to 9.99.40 !

Addresses PR kern/54875

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_60_mod.c was initially added on branch pgoyette-compat.

branches: 1.3.4;
KNF. No functional change.

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_70_mod.c was initially added on branch pgoyette-compat.

Since we now have a compat_90 module, the compat_80 module should depend
on it.

branches: 1.4.2;
The max subtype of the ifmedia word is 31. It's too small for Ethernet now.
We currently use use it up to 30. We should extend the limit to be able to use
more than 10Gbps speeds. Our ifmedia(4) is inconvenience and have some problem
so we should redesign the interface, but it's too late for netbsd-9 to do it.
So, we keep the data structure size and modify the structure a bit. The
strategy is almost the same as FreeBSD. Many bits of IFM_OMASK for Ethernet
have not used, so use some of them for Ethernet's subtype.

The differences against FreeBSD are:
- We use NetBSD style compat code (i.e. no SIOCGIFXMEDIA).
- FreeBSD's IFM_ETH_XTYPE's bit location is from 11 to "14" even though
IFM_OMASK is from 8 to "15". We use _IFM_ETH_XTMASK from bit 13 to "15".
- FreeBSD changed the meaning of IFM_TYPE_MATCH(). I think we should
not do it. We keep it not changing and added new IFM_TYPE_SUBTYPE_MATCH()
macro for matching both TYPE and SUBTYPE.
- Added up to 400GBASE-SR16.

New layout of the media word is as follows (from ifmedia_h):

* if_media Options word:
* Bits Use
* ---- -------
* 0-4 Media subtype MAX SUBTYPE == 255 for ETH and 31 for others
* 5-7 Media type
* 8-15 Type specific options
* 16-18 Mode (for multi-mode devices)
* 19 (Reserved for Future Use)
* 20-27 Shared (global) options
* 28-31 Instance
*
* 3 2 1
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-------+---------------+-+-----+---------------+-----+---------+
* | | |R| | | | |
* | IMASK | GMASK |F|MMASK+-----+ OMASK |NMASK| TMASK |
* | | |U| |XTMSK| | | |
* +-------+---------------+-+-----+-----+---------+-----+---------+
* <-----> <---> <--->
* IFM_INST() IFM_MODE() IFM_TYPE()
*
* IFM_SUBTYPE(other than ETH)<------->
*
* <---> IFM_SUBTYPE(ETH)<------->
*
*
* <-------------> <------------->
* IFM_OPTIONS()

KNF. No functional change.

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_80_mod.c was initially added on branch pgoyette-compat.

Allow kernels builds which don't define INET6 to compile compat bits too.

Modularize the COMPAT_90 code that resulted from the removal of
netinet6/nd6 from the kernel. Now, the minimal compat code can
be successfully loaded and unloaded along with the rest of the
COMPAT_90 code.

XXX pullup-10 - hopefully before RC2

Create compat_100 module infrastructure now that we have branched
for NetBSD-10

branches: 1.3.8; 1.3.28;
Resurrect boottime, but only in the compat_90 module (whether built-in
or separately loaded). This will enable running of old vmstat(1) images
on newer kernels.

Don't ignore EBUSY from disestablish or we can crash by unloading busy
syscalls.

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

Merge the [pgoyette-compat] branch

branches: 1.17.62; 1.17.64;
Include <sys/exec_aout.h> explicitly instead of relying on <sys/exec.h> to
do it for you.

#include "opt_execfmt.h" and only compile innards if EXEC_AOUT is defined.

branches: 1.15.16;
ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

branches: 1.14.44; 1.14.46; 1.14.56;
merge ktrace-lwp.

branches: 1.13.4;
nuke trailing whitespace

Don't try to map a 0 size bss.

branches: 1.11.8; 1.11.10;
Don't include malloc.h if you are not going to use it.

- GC all the setup_stack functions
- add one for linux/i386

branches: 1.9.2;
Use PAGE_SIZE rather than NBPG.

Rename __LDPGSZ to AOUT_LDPGSZ, to accurately reflect what it is.

count executable image pages as executable for vm-usage purposes.
also, always do the VTEXT vs. v_writecount mutual exclusion
(which we previously skipped if the text or data segment was empty).

remove trailing \n in panic(). approved perry.

branches: 1.5.10;
add RCSIDs (including regeneration of files as appropriate)

- Add a new vnode flag VEXECMAP, which indicates that a vnode has
executable mappings. Stop overloading VTEXT for this purpose (VTEXT
also has another meaning).
- Rename vn_marktext() to vn_markexec(), and use it when executable
mappings of a vnode are established.
- In places where we want to set VTEXT, set it in v_flag directly, rather
than making a function call to do this (it no longer makes sense to
use a function call, since we no longer overload VTEXT with VEXECMAP's
meaning).

VEXECMAP suggested by Chuq Silvers.

branches: 1.3.2; 1.3.4; 1.3.8;
remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>

add a new function vn_marktext() for exec code to let others know
that the vnode is now being used as process text.

branches: 1.1.26; 1.1.30;
- Moving cpu_exec_aout_prep_oldzmagic -> exec_aout_prep_oldzmagic.
This is used by the i386, hp300 and mac68k ports.
- Added exec_aout_prep_oldomagic, and exec_aout_prep_oldnmagic
These are just copies of the respective prep functions from
kern_exec.c with text address starting at 0. Maybe a better fix
is to pass the starting address as a third argument so we don't
duplicate code, but this could be the next pass since the functions
are used in many places. These functions are used for BSDI binaries.

compat_file.[ch] are no longer used

branches: 1.24.2; 1.24.4;
ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

branches: 1.23.6; 1.23.8; 1.23.14; 1.23.16;
Adapt for sys_mount() becoming compat_40_sys_mount(),

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: 1.21.2; 1.21.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.20.2;
Merge newlock2 to head.

branches: 1.19.4;
make this compile again.

sys_getfh -> compot_30_sys_getfh

branches: 1.17.4; 1.17.8;
merge ktrace-lwp.

64 bit inode changes.

branches: 1.15.2;
- sprinkle const.
- add XXXUNCONST to the emul_find() pbuf argument free'ing. XXX: this needs
an api change.
- avoid variable shadowing.

nuke trailing whitespace

branches: 1.13.4; 1.13.6;
Add a wrapper for connect that check an alternate path in emulation tree
for AF_LOCAL sockets.

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

Don't include malloc.h if you are not going to use it.

branches: 1.10.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

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

simplify bsd_sys_bind()

Ooops, I deleted a debug printf just before committing and one bit was
remaining. While I'm there, fix a typo in a comment.

Search alternate /emul/* path for AF_LOCAL sockets at bind() time.

Build again with SA

include more opt_ files for nfs.

getfh is needed for NFS server.

lwp'ify

branches: 1.1.2;
Introduce BSD system calls with alternate patch checking (in /emul) in
compat/common, so that they can be shared by several emulations, and use
them for Darwin.

This removes the ugly dependance on FreeBSD freebsd_file.c for COMPAT_DARWIN

compat_file.[ch] are no longer used

branches: 1.7.8; 1.7.14; 1.7.16; 1.7.18; 1.7.20;
Rework compat stat() and statvfs() code so that it no longer uses the stackgap.

branches: 1.6.26; 1.6.30; 1.6.32;
merge ktrace-lwp.

64 bit inode changes.

branches: 1.4.12;
Add a wrapper for connect that check an alternate path in emulation tree
for AF_LOCAL sockets.

branches: 1.3.2;
Search alternate /emul/* path for AF_LOCAL sockets at bind() time.

lwp'ify

branches: 1.1.2;
Introduce BSD system calls with alternate patch checking (in /emul) in
compat/common, so that they can be shared by several emulations, and use
them for Darwin.

This removes the ugly dependance on FreeBSD freebsd_file.c for COMPAT_DARWIN

Emove vestigial remains of the monolithic compat module.

Merge the [pgoyette-compat] branch

branches: 1.29.2;
Clean up a stray #ifdef _MODULE - it prevented definition of
COMPAT_SIGCONTEXT which in turn prevented building of the
SYS_compat16_sigaction_14 code.

Should address PR kern/53260

XXX Pull-up to netbsd-8

provide vectors for the ifconf compat code and ifdatareq compat code.

factor out the ccd COMPAT_60 code.

redo the cpu ucode compat code.

add uvm swap compat code.

branches: 1.24.8; 1.24.14;
Move if_43.c back into the shared Makefile.sysio where it really
belongs.

Update the code to invoke the two routines compat_cvtcmd() and
compat_ifioctl() through indirect pointers. Initialize those
pointers in sys/net/if.c and update them in the compat module's
initialization code.

Addresses the issue pointed out in PR kern/51598

branches: 1.23.2;
The COMPAT_10 code for SYSVxxx is now part of the sysv_ipc module, so
don't install syscall function pointers from the compat module.

Fix the #ifdef _MODULE stuff so that the syscall packages and sysctl stuff
gets handled properly even in built-in module case.

XXX
Whatever was I thinking when I put those conditionals in? And wouldn't it
be a wonderful thing to have some atf regression tests to actually catch
errors in the compat{,_sysv} modules? :)

Split the SYSV* compat code out into a separate compat_sysv module.

For monolithic kernels, both modules will be compiled as "built-ins",
while modular environments will be able to load the SYSVSEM, SYSVSHM,
and SYSVMSG code independant from the rest of compat.

This is a necessary precursor step to making the "STD" SYSV* code
into a separate module.

Tested in both monolithic and modular environments with no errors
seen.

branches: 1.20.6;
exec modules need to be of the exec kind

branches: 1.19.4;
compat glue for new lwp_park()

remove empty #if

Wrap sysctl_teardown(&compat_clog) with the appropriate #if defined()s

Move boottime50 and its associated sysctl into the compat module. As
noted on tech-kern. Should fix PR/47579.

OK christos@

Will request pull-up to 6.0 in a few days.

Simplify the ifdef mess. No functional context.

branches: 1.14.2; 1.14.8; 1.14.12;
COMPAT_16 code only exists on amd64 in the presence of COMPAT_NETBSD32.

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.

branches: 1.12.2;
Remove includes <sys/mount.h> and <sys/sched.h> added for <sys/syscallargs.h>.
Now they are handled by $sysarghdrextra in sys/kern/syscalls.conf.

branches: 1.11.2; 1.11.4;
Reset sendsig_sigcontext_vec at fini to avoid having it point at
garbage and to allow re-init of the module (if DIAGNOSTIC).

branches: 1.10.2;
Remove SYS_compat_50_mq_timedreceive/SYS_compat_50_mq_timedsend
duplicate entries.

Fix a KASSERT when unloading the compat kernel module.

more s/the the/the/

- Use #ifdef AIO, instead of #ifdef notyet. Not a solution, but at
least gets it working for MONOLITHIC kernel.
- Similarily add #ifdef MQUEUE for mqueue compat.
- Amend TNF license to be 2-clause. Approved by <christos>.

branches: 1.7.2; 1.7.4; 1.7.6; 1.7.8;
Add a few missing includes, so the ifdefs work as expected.

fix lutimes.

merge christos-time_t

branches: 1.4.2; 1.4.6;
make this compile (for next68k)

Additionally, set emul_netbsd_object=NULL after detaching it.

compat_modcmd: emul_netbsd_object will be NULL if no exec has taken place
between load and unload of the compat module.

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

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

Modularize the COMPAT_90 code that resulted from the removal of
netinet6/nd6 from the kernel. Now, the minimal compat code can
be successfully loaded and unloaded along with the rest of the
COMPAT_90 code.

XXX pullup-10 - hopefully before RC2

Add linux waitid(2) from GSoC 2023 (Theodore Preduta)

Add epoll(2) from Theodore Preduta as part of GSoC 2023

Create compat_100 module infrastructure now that we have branched
for NetBSD-10

branches: 1.6.26;
Add a new member to struct vfsstat and grow the unused members
The new member is caled f_mntfromlabel and it is the dkw_wname
of the corresponding wedge. This is now used by df -W to display
the mountpoint name as NAME=

The max subtype of the ifmedia word is 31. It's too small for Ethernet now.
We currently use use it up to 30. We should extend the limit to be able to use
more than 10Gbps speeds. Our ifmedia(4) is inconvenience and have some problem
so we should redesign the interface, but it's too late for netbsd-9 to do it.
So, we keep the data structure size and modify the structure a bit. The
strategy is almost the same as FreeBSD. Many bits of IFM_OMASK for Ethernet
have not used, so use some of them for Ethernet's subtype.

The differences against FreeBSD are:
- We use NetBSD style compat code (i.e. no SIOCGIFXMEDIA).
- FreeBSD's IFM_ETH_XTYPE's bit location is from 11 to "14" even though
IFM_OMASK is from 8 to "15". We use _IFM_ETH_XTMASK from bit 13 to "15".
- FreeBSD changed the meaning of IFM_TYPE_MATCH(). I think we should
not do it. We keep it not changing and added new IFM_TYPE_SUBTYPE_MATCH()
macro for matching both TYPE and SUBTYPE.
- Added up to 400GBASE-SR16.

New layout of the media word is as follows (from ifmedia_h):

* if_media Options word:
* Bits Use
* ---- -------
* 0-4 Media subtype MAX SUBTYPE == 255 for ETH and 31 for others
* 5-7 Media type
* 8-15 Type specific options
* 16-18 Mode (for multi-mode devices)
* 19 (Reserved for Future Use)
* 20-27 Shared (global) options
* 28-31 Instance
*
* 3 2 1
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-------+---------------+-+-----+---------------+-----+---------+
* | | |R| | | | |
* | IMASK | GMASK |F|MMASK+-----+ OMASK |NMASK| TMASK |
* | | |U| |XTMSK| | | |
* +-------+---------------+-+-----+-----+---------+-----+---------+
* <-----> <---> <--->
* IFM_INST() IFM_MODE() IFM_TYPE()
*
* IFM_SUBTYPE(other than ETH)<------->
*
* <---> IFM_SUBTYPE(ETH)<------->
*
*
* <-------------> <------------->
* IFM_OPTIONS()

Split the COMPAT_50 socket-timeout stuff out of kern/uipc_socket.c
and into its own source file, which is now included in the compat_50
module.

(Not sure how this got missed during the original [pgoyette-compat] work)

- provide a hook for the 43 tty ioctls
- make the 60 tty ioctl hook look the same
- fix the tty code to call both hooks and remove unused lock

Merge the [pgoyette-compat] branch

branches: 1.1.4; 1.1.6; 1.1.16; 1.1.42; 1.1.44;
Move boottime50 and its associated sysctl into the compat module. As
noted on tech-kern. Should fix PR/47579.

OK christos@

Will request pull-up to 6.0 in a few days.

branches: 1.1.2;
file compat_raid_50.c was initially added on branch pgoyette-compat.

branches: 1.1.2;
file compat_raid_80.c was initially added on branch pgoyette-compat.

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

Use 'curlwp' here insteald of the 'l' - which isn't passsed as an arg
to the #define, but will always be curlwp.

branches: 1.2.2; 1.2.12; 1.2.60; 1.2.66; 1.2.70;
Modify the (recently added) compat_sigaltstack() #define to take the
values of the SS_ONSTACK and SS_DISABLE constants.
Use it to shorten the source files when this action is replicated.
Actually, given the monstrous complexity of sigaltstack1() there is
probably a much better way to do this...

branches: 1.1.2;
Add a #define that expands to the compat wrapper for sigaltstack1().
Use it for the netbsd32_compat_13.c version of the code.

When using SYSCTL_SETUP there is no guarantee of the order in which
the set-up functions will be called, so it is perfectly acceptable
for a compat code's routine to be called ahead of the code in other
parts of the kernel.

So make sure that the 2nd level sysctl node ``vfs.generic'' exists
before trying to add the 3rd level entries.

XXX Rather than creating the 2nd level node in two places, we could
XXX add the shared ``vfs.generic'' node to sysctl_init_base.c but
XXX this is left for another day.

Ooppss - SYSCTL_SETUP() functions return void.

Remove explicit calls to the sysctl setup routines, since this is now
handled by the module infrastructure.

branches: 1.3.2;
Fix a bunch of unimportant "Local variable hides global variable" warnings
from the LGTM bot.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_sysctl_09_43.c was initially added on branch pgoyette-compat.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_sysv_10_mod.c was initially added on branch pgoyette-compat.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_sysv_14_mod.c was initially added on branch pgoyette-compat.

Rather than keeping a separate mutex, condvar, and pserialize for each
module hook, we can share a common set of synchronization structures.
This cuts the amount of cacheline_aligned data for these structures by
50%.

Note that we still have a per-hook localcount, since we need to count
individual references.

As discussed with riastradh@

Welcome to 9.99.22 !

branches: 1.4.4;
Rename the MODULE_*_HOOK() macros to MODULE_HOOK_*() as briefly
discussed on irc.

NFCI intended.

Ride the earlier kernel bump - it;s getting crowded.

Normalize all the compat hooks' names to the form

<subsystem>_<function>_<version>_hook

NFCI

XXX Note that although this introduces a change in the kernel-to-
XXX module interface, we are NOT bumping the kernel version number.
XXX We will bump the version number once the interface stabilizes.

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_sysv_50_mod.c was initially added on branch pgoyette-compat.

branches: 1.4.10;
Merge the compat_sysv module into the sysv_ipc module - it should
never have been a separate module in the first place (my bad).

Adjust dependencies as appropriate.

branches: 1.3.2;
The compat_sysv module now depends on sysv_ipc module.

Fix the #ifdef _MODULE stuff so that the syscall packages and sysctl stuff
gets handled properly even in built-in module case.

XXX
Whatever was I thinking when I put those conditionals in? And wouldn't it
be a wonderful thing to have some atf regression tests to actually catch
errors in the compat{,_sysv} modules? :)

Split the SYSV* compat code out into a separate compat_sysv module.

For monolithic kernels, both modules will be compiled as "built-ins",
while modular environments will be able to load the SYSVSEM, SYSVSHM,
and SYSVMSG code independant from the rest of compat.

This is a necessary precursor step to making the "STD" SYSV* code
into a separate module.

Tested in both monolithic and modular environments with no errors
seen.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file compat_sysv_mod.h was initially added on branch pgoyette-compat.

Renamed compat_tty.c to tty_43.c and updated with the newest copy from
kern/tty_compat.c

- Extracted all compat routines from the kern directory and moved here.
- Created compat_util.c and compat_util.h to be used by the compatibility
modules, so they don't duplicate the same code.
- Added prototypes to the stackgap allocation routines.

Merge the [pgoyette-compat] branch

branches: 1.46.18; 1.46.20;
Do not uselessly include <sys/malloc.h>.

branches: 1.45.4;
Free pathbuf in an error path.
From Maxime Villard.

branches: 1.44.8; 1.44.14; 1.44.18; 1.44.20; 1.44.22; 1.44.28;
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.

branches: 1.43.4;
replace mips:elf_check_itp() and ELFNAME2(netbsd32,probe_noteless) that
it's based upon with a common compat_elf_check_interp().

tested on MALTA64 and sparc64.

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: 1.41.10; 1.41.14; 1.41.18; 1.41.20; 1.41.24;
Remove clause 3 and 4 from TNF licenses

branches: 1.40.6; 1.40.8; 1.40.10;
Remove systrace. Ok core@.

branches: 1.39.4;
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.

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

branches: 1.37.6; 1.37.8; 1.37.14; 1.37.16;
Put the stackgap code under OPT_SYSTRACE.

Pass the emulation root string into namei() from emul_find_interp() so that
the ktrace entries for lookups done during exec can have the full filename.
This is rather a hack :-)

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: 1.34.2; 1.34.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.33.4;
s/existance/existence/, from Zafer.

branches: 1.32.4; 1.32.6;
Use the LWP cached credentials where sane.

integrate kauth.

branches: 1.30.4; 1.30.6; 1.30.8; 1.30.10; 1.30.12;
merge ktrace-lwp.

branches: 1.29.2;
- sprinkle const.
- add XXXUNCONST to the emul_find() pbuf argument free'ing. XXX: this needs
an api change.
- avoid variable shadowing.

nuke trailing whitespace

branches: 1.27.2; 1.27.10; 1.27.12;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

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

add emul_find_interp() function: the function looks for interpreter
in alternative emul tree first, and updates interpreter pathname
if found there; if not found in alternative emul tree, pathname
without the emul prefix is checked, and error returned if the file
doesn't exist

Remove a meaningless type qualifier on a cast.

panic if more space than stackgaplen is requested. Maybe I should remove the
size option completely.

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; 1.20.4;
emul_find(): actually, the emulation root vnode dance has to be done for
CHECK_ALT_SYMLINK() same way as for CHECK_ALT_EXISTS()
This fixes lossage reported on current-users and kern/12019 by Ross Harvey.

Introduce CHECK_ALT_SYMLINK() - this checks for alternative location without
following links, hence is usable for checking of presence of a symlink.
Also slighly cleanup EXISTS and CREAT cases - use symbolic constants
instead of 0/1.
This is needed for emulation of readlink(2), lchown(2) and similar.
Addresses kern/11757.

make const the struct emul * pointers passed/used in stackgap_init(),
stackgap_alloc()

Add support for variable end of user stacks needed to support COMPAT_NETBSD32:

`struct vmspace' has a new field `vm_minsaddr' which is the user TOS.

PS_STRINGS is deprecated in favor of curproc->p_pstr which is derived
from `vm_minsaddr'.

Bump the kernel version number.

Emulation stackgap sanity checks, based partly on fixes from
FreeBSD-SA00:42.

Change stackgap_alloc to bounds-check the allocation vs. the stack
gap, returning NULL if there isn't room for the allocation.

Change emul_find() to check for a NULL return from stackgap_alloc()
and convert that into ENAMETOOLONG.

Reorder various emulation syscalls so that all *_CHECK_ALT_{EXIST,CREAT}
calls (which turn into emul_find() under the covers come *after* small,
fixed-size stackgap_alloc() calls.

Clean up ibcs2 {get,set}groups.

remove redundant vm includes.

branches: 1.14.2; 1.14.12;
From cgd again: pbuf == path on failure.

Make the usage consistant and document it:
if the path was given in a user buffer, return the new path in
a user buffer.
if the path was given in a kernel buffer, allocate a new kernel buffer
to return the new path; the caller is responsible for freeing the buffer
if we fail always set the new path to NULL.
This usage broke when I adde the /../ shortcut. Noted by cgd.

implement a simple function, emul_flags_translate() to do table-based
flags translation.

branches: 1.11.2; 1.11.4; 1.11.6;
Provide a way for compat programs to specify files in the normal tree.
We do this using a trick similar to mach's /../; if a path is given as
/..<absolute-path-name>, then we return <absolute-path-name>

char * and char ** -> const char * and const char **

Assign to TNF completely.

Assign copyright to TNF.

Add getdirentries backward compat syscall. Provide common function to
signal cookie overflow during emulated getdents and friends.

branches: 1.6.10;
make the namei struct members ni_dirp and ni_next, and the componentname
struct member cn_nameptr 'const', since they should never be used to
modify the path name. (Only the pathname buffer, cn_pnbuf, should be
modified.) Propagate the const poisoning to code that uses the namei
and componentname structs.

Don't inline stackgap_init() and stackgap_alloc(). Doing so generates
an include file dependency graph that's much more complicated than
it needs to be, and wastes space in the kernel.

Fix compiler warnings

Make sure we free the pathname buffer in all error cases.

branches: 1.2.2;
Fix PR1160... (bug with the new compat_util prefix)

- Extracted all compat routines from the kern directory and moved here.
- Created compat_util.c and compat_util.h to be used by the compatibility
modules, so they don't duplicate the same code.
- Added prototypes to the stackgap allocation routines.

Merge the [pgoyette-compat] branch

branches: 1.23.36; 1.23.38;
Move boottime50 and its associated sysctl into the compat module. As
noted on tech-kern. Should fix PR/47579.

OK christos@

Will request pull-up to 6.0 in a few days.

branches: 1.22.12; 1.22.18; 1.22.22;
replace mips:elf_check_itp() and ELFNAME2(netbsd32,probe_noteless) that
it's based upon with a common compat_elf_check_interp().

tested on MALTA64 and sparc64.

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: 1.20.6; 1.20.8; 1.20.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.19.6; 1.19.8; 1.19.10;
Remove stackgap functions externs.

branches: 1.18.8; 1.18.14; 1.18.20;
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: 1.17.2; 1.17.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.16.26;
merge ktrace-lwp.

branches: 1.15.2;
- sprinkle const.
- add XXXUNCONST to the emul_find() pbuf argument free'ing. XXX: this needs
an api change.
- avoid variable shadowing.

branches: 1.14.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

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

add emul_find_interp() function: the function looks for interpreter
in alternative emul tree first, and updates interpreter pathname
if found there; if not found in alternative emul tree, pathname
without the emul prefix is checked, and error returned if the file
doesn't exist

de-__P()

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.

branches: 1.9.2; 1.9.4;
Introduce CHECK_ALT_SYMLINK() - this checks for alternative location without
following links, hence is usable for checking of presence of a symlink.
Also slighly cleanup EXISTS and CREAT cases - use symbolic constants
instead of 0/1.
This is needed for emulation of readlink(2), lchown(2) and similar.
Addresses kern/11757.

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

make const the struct emul * pointers passed/used in stackgap_init(),
stackgap_alloc()

branches: 1.6.2;
implement a simple function, emul_flags_translate() to do table-based
flags translation.

branches: 1.5.2; 1.5.4; 1.5.6;
char * and char ** -> const char * and const char **

Assign copyright to TNF.

Add getdirentries backward compat syscall. Provide common function to
signal cookie overflow during emulated getdents and friends.

branches: 1.2.10;
Don't inline stackgap_init() and stackgap_alloc(). Doing so generates
an include file dependency graph that's much more complicated than
it needs to be, and wastes space in the kernel.

- Extracted all compat routines from the kern directory and moved here.
- Created compat_util.c and compat_util.h to be used by the compatibility
modules, so they don't duplicate the same code.
- Added prototypes to the stackgap allocation routines.

remove dup line

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

Modularize the COMPAT_90 code that resulted from the removal of
netinet6/nd6 from the kernel. Now, the minimal compat code can
be successfully loaded and unloaded along with the rest of the
COMPAT_90 code.

XXX pullup-10 - hopefully before RC2

Add linux waitid(2) from GSoC 2023 (Theodore Preduta)

Add epoll(2) from Theodore Preduta as part of GSoC 2023

Create compat_100 module infrastructure now that we have branched
for NetBSD-10

branches: 1.7.4;
fix various typos in compatibility, mainly in comments.

Split the compat_50 module into two, separating the QUOTA-related
stuff from the rest of the module. This allows loading of the
(main) compat_50 module on kernels that don't include ``options
QUOTA''.

Welcome to 9.99.40 !

Addresses PR kern/54875

branches: 1.5.2;
Add a new member to struct vfsstat and grow the unused members
The new member is caled f_mntfromlabel and it is the dkw_wname
of the corresponding wedge. This is now used by df -W to display
the mountpoint name as NAME=

branches: 1.4.2;
The max subtype of the ifmedia word is 31. It's too small for Ethernet now.
We currently use use it up to 30. We should extend the limit to be able to use
more than 10Gbps speeds. Our ifmedia(4) is inconvenience and have some problem
so we should redesign the interface, but it's too late for netbsd-9 to do it.
So, we keep the data structure size and modify the structure a bit. The
strategy is almost the same as FreeBSD. Many bits of IFM_OMASK for Ethernet
have not used, so use some of them for Ethernet's subtype.

The differences against FreeBSD are:
- We use NetBSD style compat code (i.e. no SIOCGIFXMEDIA).
- FreeBSD's IFM_ETH_XTYPE's bit location is from 11 to "14" even though
IFM_OMASK is from 8 to "15". We use _IFM_ETH_XTMASK from bit 13 to "15".
- FreeBSD changed the meaning of IFM_TYPE_MATCH(). I think we should
not do it. We keep it not changing and added new IFM_TYPE_SUBTYPE_MATCH()
macro for matching both TYPE and SUBTYPE.
- Added up to 400GBASE-SR16.

New layout of the media word is as follows (from ifmedia_h):

* if_media Options word:
* Bits Use
* ---- -------
* 0-4 Media subtype MAX SUBTYPE == 255 for ETH and 31 for others
* 5-7 Media type
* 8-15 Type specific options
* 16-18 Mode (for multi-mode devices)
* 19 (Reserved for Future Use)
* 20-27 Shared (global) options
* 28-31 Instance
*
* 3 2 1
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-------+---------------+-+-----+---------------+-----+---------+
* | | |R| | | | |
* | IMASK | GMASK |F|MMASK+-----+ OMASK |NMASK| TMASK |
* | | |U| |XTMSK| | | |
* +-------+---------------+-+-----+-----+---------+-----+---------+
* <-----> <---> <--->
* IFM_INST() IFM_MODE() IFM_TYPE()
*
* IFM_SUBTYPE(other than ETH)<------->
*
* <---> IFM_SUBTYPE(ETH)<------->
*
*
* <-------------> <------------->
* IFM_OPTIONS()

Split the COMPAT_50 socket-timeout stuff out of kern/uipc_socket.c
and into its own source file, which is now included in the compat_50
module.

(Not sure how this got missed during the original [pgoyette-compat] work)

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file files.common was initially added on branch pgoyette-compat.

merge ktrace-lwp.

nuke trailing whitespace

branches: 1.1.2; 1.1.38; 1.1.46; 1.1.48;
a quick hack to make generating errno conversion tables from our and other
systems' headers a bit easier. leaves much to be desired, but it's better
than nothing.

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.

Rather than keeping a separate mutex, condvar, and pserialize for each
module hook, we can share a common set of synchronization structures.
This cuts the amount of cacheline_aligned data for these structures by
50%.

Note that we still have a per-hook localcount, since we need to count
individual references.

As discussed with riastradh@

Welcome to 9.99.22 !

branches: 1.5.4; 1.5.6;
Rename the MODULE_*_HOOK() macros to MODULE_HOOK_*() as briefly
discussed on irc.

NFCI intended.

Ride the earlier kernel bump - it;s getting crowded.

Normalize all the compat hooks' names to the form

<subsystem>_<function>_<version>_hook

NFCI

XXX Note that although this introduces a change in the kernel-to-
XXX module interface, we are NOT bumping the kernel version number.
XXX We will bump the version number once the interface stabilizes.

- Don't expose random data conversion functions, but expose the high level
entry point (such as ioctl) instead.
- Attempt to autoload the module before using it.

Naming: Should the names of the hooks be:
<category>_<version>_<function>_hook_t
or:
<category>_<function>_<version>_hook_t

We should make those consistent.

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file ieee80211_20.c was initially added on branch pgoyette-compat.

Rather than keeping a separate mutex, condvar, and pserialize for each
module hook, we can share a common set of synchronization structures.
This cuts the amount of cacheline_aligned data for these structures by
50%.

Note that we still have a per-hook localcount, since we need to count
individual references.

As discussed with riastradh@

Welcome to 9.99.22 !

branches: 1.4.4;
Rename the MODULE_*_HOOK() macros to MODULE_HOOK_*() as briefly
discussed on irc.

NFCI intended.

Ride the earlier kernel bump - it;s getting crowded.

Rename the if43_20_hook to if43_cvtcmd_20_hook

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file if43_20.c was initially added on branch pgoyette-compat.

branches: 1.1.2;
file if_40.h was initially added on branch pgoyette-compat.

atalk(4): Omit spurious satosat.

The input is already a struct sockaddr_at pointer.

branches: 1.26.4;
Simplify sys/compat/sys/sockio.h. No functional change intended.

- Move some definitions from sys/compat/sockio.h to compat/net/if.h.
struct oif_data in sockio.h and if_data50 are the same, so remove oif_data.
Do the same thing to oifdatareq, too.
- u_quad_t -> uint64_t. No functional change.

Remove in-kernel handling of Router Advertisements

This is much better handled by a user-land tool.
Proposed on tech-net here:
https://mail-index.netbsd.org/tech-net/2020/04/22/msg007766.html

Note that the ioctl SIOCGIFINFO_IN6 no longer sets flags. That now
needs to be done using the pre-existing SIOCSIFINFO_FLAGS ioctl.

Compat is fully provided where it makes sense, but trying to turn on
RA handling will obviously throw an error as it no longer exists.

Note that if you use IPv6 temporary addresses, this now needs to be
turned on in dhcpcd.conf(5) rather than in sysctl.conf(5).

Rather than keeping a separate mutex, condvar, and pserialize for each
module hook, we can share a common set of synchronization structures.
This cuts the amount of cacheline_aligned data for these structures by
50%.

Note that we still have a per-hook localcount, since we need to count
individual references.

As discussed with riastradh@

Welcome to 9.99.22 !

Remove unused assignment. Found by the lgtm bot.

The max subtype of the ifmedia word is 31. It's too small for Ethernet now.
We currently use use it up to 30. We should extend the limit to be able to use
more than 10Gbps speeds. Our ifmedia(4) is inconvenience and have some problem
so we should redesign the interface, but it's too late for netbsd-9 to do it.
So, we keep the data structure size and modify the structure a bit. The
strategy is almost the same as FreeBSD. Many bits of IFM_OMASK for Ethernet
have not used, so use some of them for Ethernet's subtype.

The differences against FreeBSD are:
- We use NetBSD style compat code (i.e. no SIOCGIFXMEDIA).
- FreeBSD's IFM_ETH_XTYPE's bit location is from 11 to "14" even though
IFM_OMASK is from 8 to "15". We use _IFM_ETH_XTMASK from bit 13 to "15".
- FreeBSD changed the meaning of IFM_TYPE_MATCH(). I think we should
not do it. We keep it not changing and added new IFM_TYPE_SUBTYPE_MATCH()
macro for matching both TYPE and SUBTYPE.
- Added up to 400GBASE-SR16.

New layout of the media word is as follows (from ifmedia_h):

* if_media Options word:
* Bits Use
* ---- -------
* 0-4 Media subtype MAX SUBTYPE == 255 for ETH and 31 for others
* 5-7 Media type
* 8-15 Type specific options
* 16-18 Mode (for multi-mode devices)
* 19 (Reserved for Future Use)
* 20-27 Shared (global) options
* 28-31 Instance
*
* 3 2 1
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-------+---------------+-+-----+---------------+-----+---------+
* | | |R| | | | |
* | IMASK | GMASK |F|MMASK+-----+ OMASK |NMASK| TMASK |
* | | |U| |XTMSK| | | |
* +-------+---------------+-+-----+-----+---------+-----+---------+
* <-----> <---> <--->
* IFM_INST() IFM_MODE() IFM_TYPE()
*
* IFM_SUBTYPE(other than ETH)<------->
*
* <---> IFM_SUBTYPE(ETH)<------->
*
*
* <-------------> <------------->
* IFM_OPTIONS()

Rename ifreqo2n() and ifreqo2n() to IFREQO2N_43() and IFREQN2O_43():
- ifreqo2n() and ifreqn2o() are for COMPAT_43, so add _43 to the name.
- Uppercase to make it clear those are macros.

Rename the MODULE_*_HOOK() macros to MODULE_HOOK_*() as briefly
discussed on irc.

NFCI intended.

Ride the earlier kernel bump - it;s getting crowded.

Normalize all the compat hooks' names to the form

<subsystem>_<function>_<version>_hook

NFCI

XXX Note that although this introduces a change in the kernel-to-
XXX module interface, we are NOT bumping the kernel version number.
XXX We will bump the version number once the interface stabilizes.

Rename the if43_20_hook to if43_cvtcmd_20_hook

The if43_20_hook function returns an errno; use it to determine whether
to allow conversion of the ioctl cmd --> ncmd

Should address issue reported by msaitoh@ on irc as well as via e-mail
from Patrick Welche and Ryo ONODERA.

Merge the [pgoyette-compat] branch

Remove the network ATM code.

branches: 1.14.2; 1.14.4;
Kill needless nested extern of vec_compat_cvtcmd/ioctl.

Already declared in if_43.h.

Move if_43.c back into the shared Makefile.sysio where it really
belongs.

Update the code to invoke the two routines compat_cvtcmd() and
compat_ifioctl() through indirect pointers. Initialize those
pointers in sys/net/if.c and update them in the compat module's
initialization code.

Addresses the issue pointed out in PR kern/51598

Apply if_get/if_put to compat_ifioctl

branches: 1.11.2;
Handle case where compat_ifioctl() is called with ocmd != cmd, as found in
compat Linux. Do not crash by ensuring that oifr is correctly set.

Fix crash reported by Robert Swindells on tech-kern@.

rump is compiled with COMPAT_OSOCK not COMPAT_OIFREQ and the code in if.c
is not handling this case properly. Make this work by checking again if
we need to convert struct ifreq here, and if we do, we do it ourselves.

branches: 1.9.2;
Do not uselessly include <sys/malloc.h>.

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

branches: 1.7.2;
fix parameter types in pr_ioctl, called xx_control() functions and remove
abuse of pointer to struct mbuf type.

param2 changed to u_long type and uses parameter name 'cmd' (ioctl command)
param3 changed to void * type and uses parameter name 'data'
param4 changed to struct ifnet * and uses parameter name 'ifp'
param5 has been removed (formerly struct lwp *) and uses of 'l' have been
replaced with curlwp from curproc(9).

callers have had (now unnecessary) casts to struct mbuf * removed, called
code has had (now unnecessary) casts to u_long, void * and struct ifnet *
respectively removed.

reviewed by rmind@

* split PRU_CONTROL functionality out of xxx_userreq() switches and place
into separate xxx_ioctl() functions.
* place KASSERT(req != PRU_CONTROL) inside xxx_userreq() as it is now
inappropriate for req = PRU_CONTROL in xxx_userreq().
* replace calls to pr_generic() with req = PRU_CONTROL with pr_ioctl().
* remove & fixup references to PRU_CONTROL xxx_userreq() function comments.
* fix various comments references for xxx_userreq() that mentioned
PRU_CONTROL as xxx_userreq() no longer handles the request.

a further change will follow to fix parameter and naming inconsistencies
retained from original code.

Reviewed by rmind@

Add struct pr_usrreqs with a pr_generic function and prepare for the
dismantling of pr_usrreq in the protocols; no functional change intended.
PRU_ATTACH/PRU_DETACH changes will follow soon.

Bump for struct protosw. Welcome to 6.99.62!

branches: 1.4.16; 1.4.20; 1.4.30;
Remove includes <sys/mount.h> and <sys/sched.h> added for <sys/syscallargs.h>.
Now they are handled by $sysarghdrextra in sys/kern/syscalls.conf.

branches: 1.3.2;
can't map the old and the new SIO calls the way we did before because the
numbers have changed. Instead provide a switch. Keep the old code there,
to handle cases we did not handle in the first switch, but this is a hack
and should be removed.

branches: 1.2.2; 1.2.6;
#include "opt_compat_netbsd.h" for COMPAT_20.

branches: 1.1.4; 1.1.6; 1.1.8; 1.1.10;
- Move some more compat code into sys/compat.
- Split 4.3BSD ifioctl stuff into its own file.
- Remove some ifdefs that include small fragments of vfs compat code
which are difficult to relocate elsewhere.

Merge the [pgoyette-compat] branch

branches: 1.1.2; 1.1.4; 1.1.18; 1.1.20; 1.1.22;
Move if_43.c back into the shared Makefile.sysio where it really
belongs.

Update the code to invoke the two routines compat_cvtcmd() and
compat_ifioctl() through indirect pointers. Initialize those
pointers in sys/net/if.c and update them in the compat module's
initialization code.

Addresses the issue pointed out in PR kern/51598

sys/compat/common/if_media_80.c: Add kernel rcsid.

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.

Rather than keeping a separate mutex, condvar, and pserialize for each
module hook, we can share a common set of synchronization structures.
This cuts the amount of cacheline_aligned data for these structures by
50%.

Note that we still have a per-hook localcount, since we need to count
individual references.

As discussed with riastradh@

Welcome to 9.99.22 !

fix sign-compare issues.

branches: 1.1.2; 1.1.4;
The max subtype of the ifmedia word is 31. It's too small for Ethernet now.
We currently use use it up to 30. We should extend the limit to be able to use
more than 10Gbps speeds. Our ifmedia(4) is inconvenience and have some problem
so we should redesign the interface, but it's too late for netbsd-9 to do it.
So, we keep the data structure size and modify the structure a bit. The
strategy is almost the same as FreeBSD. Many bits of IFM_OMASK for Ethernet
have not used, so use some of them for Ethernet's subtype.

The differences against FreeBSD are:
- We use NetBSD style compat code (i.e. no SIOCGIFXMEDIA).
- FreeBSD's IFM_ETH_XTYPE's bit location is from 11 to "14" even though
IFM_OMASK is from 8 to "15". We use _IFM_ETH_XTMASK from bit 13 to "15".
- FreeBSD changed the meaning of IFM_TYPE_MATCH(). I think we should
not do it. We keep it not changing and added new IFM_TYPE_SUBTYPE_MATCH()
macro for matching both TYPE and SUBTYPE.
- Added up to 400GBASE-SR16.

New layout of the media word is as follows (from ifmedia_h):

* if_media Options word:
* Bits Use
* ---- -------
* 0-4 Media subtype MAX SUBTYPE == 255 for ETH and 31 for others
* 5-7 Media type
* 8-15 Type specific options
* 16-18 Mode (for multi-mode devices)
* 19 (Reserved for Future Use)
* 20-27 Shared (global) options
* 28-31 Instance
*
* 3 2 1
* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
* +-------+---------------+-+-----+---------------+-----+---------+
* | | |R| | | | |
* | IMASK | GMASK |F|MMASK+-----+ OMASK |NMASK| TMASK |
* | | |U| |XTMSK| | | |
* +-------+---------------+-+-----+-----+---------+-----+---------+
* <-----> <---> <--->
* IFM_INST() IFM_MODE() IFM_TYPE()
*
* IFM_SUBTYPE(other than ETH)<------->
*
* <---> IFM_SUBTYPE(ETH)<------->
*
*
* <-------------> <------------->
* IFM_OPTIONS()

Remove <net/netisr.h>

Rather than keeping a separate mutex, condvar, and pserialize for each
module hook, we can share a common set of synchronization structures.
This cuts the amount of cacheline_aligned data for these structures by
50%.

Note that we still have a per-hook localcount, since we need to count
individual references.

As discussed with riastradh@

Welcome to 9.99.22 !

branches: 1.3.4;
Rename the MODULE_*_HOOK() macros to MODULE_HOOK_*() as briefly
discussed on irc.

NFCI intended.

Ride the earlier kernel bump - it;s getting crowded.

Merge the [pgoyette-compat] branch

branches: 1.1.2;
file if_spppsubr50.c was initially added on branch pgoyette-compat.

branches: 1.2.4;
Merge the [pgoyette-compat] branch

branches: 1.1.2;
file if_spppsubr50.h was initially added on branch pgoyette-compat.

- Track LWPs in a per-process radixtree. It uses no extra memory in the
single threaded case. Replace scans of p->p_lwps with lookups in the
tree. Find free LIDs for new LWPs in the tree. Replace the hashed sleep
queues for park/unpark with lookups in the tree under cover of a RW lock.

- lwp_wait(): if waiting on a specific LWP, find the LWP via tree lookup and
return EINVAL if it's detached, not ESRCH.

- Group the locks in struct proc at the end of the struct in their own cache
line.

- Add some comments.

branches: 1.2.6;
Merge the [pgoyette-compat] branch

branches: 1.1.4; 1.1.6; 1.1.10; 1.1.34; 1.1.36;
Move a few compat 50 syscalls, not applicable to rump kernels, out of
kern_time_50.c to a new source module.

Merge the [pgoyette-compat] branch

branches: 1.3.2;
include compat/sys/cpuio.h and multiple include protection.

finish MD glue for compat ucode module.

branches: 1.1.2;
redo the cpu ucode compat code.

Remove compat code for posix_fadvise

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.10;
Implement new version of posix_fadvise as a stub callinig the real
worker function, and compatibility stub doing the same with old argument
sturcture.

Add epoll(2) from Theodore Preduta as part of GSoC 2023

Merge the [pgoyette-compat] branch

branches: 1.22.62; 1.22.64;
do_sys_wait(): fix previous by checking for ru != NULL. Noticed by
Onno van der Linden. Also, remove redundant arguments (seems that
was_zombie was not used since rev 1.177 ?).

branches: 1.21.10; 1.21.12;
Convert all the system call entry points from:
int foo(struct lwp *l, void *v, register_t *retval)
to:
int foo(struct lwp *l, const struct foo_args *uap, register_t *retval)
Fixup compat code to not write into 'uap' and (in some cases) to actually
pass a correctly formatted 'uap' structure with the right name to the
next routine.
A few 'compat' routines that just call standard ones have been deleted.
All the 'compat' code compiles (along with the kernels required to test
build it).
98% done by automated scripts.

branches: 1.20.4; 1.20.8;
machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

branches: 1.19.6; 1.19.8; 1.19.12;
Split sys_wait4() so that compat code can fiddle with the returned 'status'
and 'rusage' without having to copy data to/from stackgap buffers.
The old split (find_stopped_child) could be removed.
amd64 seems to run netbsd32, linux and linux32 emulations. sparc64 compiles.

branches: 1.18.2; 1.18.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.17.2;
Merge newlock2 to head.

Remove more duplicate headers.
Patch by Slava Semushin <slava.semushin@gmail.com>

Again, this was tested by comparing obj files from a pristine and a patched
source tree against an i386/ALL kernel, and also for src/sbin/fsck_ffs,
src/sbin/fsdb and src/usr.sbin/makefs. Only changes in assert() line numbers
were detected in 'objdump -d' output.

__unused removal on arguments; approved by core.

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

branches: 1.13.20; 1.13.22;
merge ktrace-lwp.

branches: 1.12.16;
Don't include malloc.h if you are not going to use it.

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

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

branches: 1.10.2;
Merge the nathanw_sa branch.

Don't include <sys/map.h>.

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: 1.6.2; 1.6.4;
remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>

remove/move more mach vm header files:

<vm/pglist.h> -> <uvm/uvm_pglist.h>
<vm/vm_inherit.h> -> <uvm/uvm_inherit.h>
<vm/vm_kern.h> -> into <uvm/uvm_extern.h>
<vm/vm_object.h> -> nothing
<vm/vm_pager.h> -> into <uvm/uvm_pager.h>

also includes a bunch of <vm/vm_page.h> include removals (due to redudancy
with <vm/vm.h>), and a scattering of other similar headers.

branches: 1.4.18;
machine/psl.h is deprecated; move #include <machine/psl.h> inside #ifdef m68k.

branches: 1.3.14;
Prefix names of system call implementation functions with `sys_'.

Fix the declaration of compat_43_wait() (int * -> register_t *), pointed
out by Chris Demetriou.

- Extracted all compat routines from the kern directory and moved here.
- Created compat_util.c and compat_util.h to be used by the compatibility
modules, so they don't duplicate the same code.
- Added prototypes to the stackgap allocation routines.

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: 1.21.4;
Merge the [pgoyette-compat] branch

branches: 1.20.12; 1.20.90; 1.20.96; 1.20.98;
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: 1.19.16; 1.19.24; 1.19.28;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.18.2;
Merge newlock2 to head.

__unused removal on arguments; approved by core.

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

branches: 1.15.20; 1.15.22;
merge ktrace-lwp.

branches: 1.14.16;
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.

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

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

branches: 1.12.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

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.

add RCSIDs (including regeneration of files as appropriate)

branches: 1.8.2; 1.8.4;
Sprinkle in some const.

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