s/reqest/request/, s/requst/request/ and s/reuqest/request/ in comments.

Don't accept negative value.

Reported-by: syzbot+e71a77402d6668f1868d@syzkaller.appspotmail.com

branches: 1.30.4;
Zero out the ifreq struct for SIOCGIFCONF to avoid up to 127 bytes of stack
disclosure. From Andy Nguyen, many thanks! This is the compat code part
pointed out by ozaki-r@

branches: 1.29.2;
Fix pserialize enter/exit pairs in linux_getifconf and linux32_getifconf

Tested by using a small linux program that uses ioctl(SIOCGIFCONF).
Probably fix PR kern/53259 as well.

branches: 1.28.2;
Fix and make consistent of usages of psz/psref in ifconf variants

branches: 1.27.6;
Use if_acquire and if_release instead of using psref API directly

- Provide if_release for consistency to if_acquire
- Use if_acquire and if_release for ifp iterations
- Make ifnet_psref_class static

branches: 1.26.2;
Apply pserialize and psref to struct ifaddr and its variants

This change makes struct ifaddr and its variants (in_ifaddr and in6_ifaddr)
MP-safe by using pserialize and psref. At this moment, pserialize_perform
and psref_target_destroy are disabled because (1) we don't need them
because of softnet_lock (2) they cause a deadlock because of softnet_lock.
So we'll enable them when we remove softnet_lock in the future.

branches: 1.25.2;
Switch the address list of intefaces to pslist(9)

As usual, we leave the old list to avoid breaking kvm(3) users.

Fix psref isn't released in a case of IFADDR_EMPTY

Use curlwp_bind and curlwp_bindx instead of open-coding LP_BOUND

Protect if_byindex by pserialize

Protect ifnet list with psz and psref

The change ensures that ifnet objects in the ifnet list aren't freed during
list iterations by using pserialize(9) and psref(9).

Note that the change adds a pslist(9) for ifnet but doesn't remove the
original ifnet list (ifnet_list) to avoid breaking kvm(3) users. We
shouldn't use the original list in the kernel anymore.

Unused inits (harmless).

Found by Brainy.

branches: 1.19.2;
Tweak ifconf variants

The tweaks make the code intention clear and make further changes easy.

No functional change.

branches: 1.18.2; 1.18.4; 1.18.8;
Replace open-coded access (and boundary checking) of ifindex2ifnet with
if_byindex() function.

branches: 1.17.2; 1.17.10;
Use copyin/copyout and linux-specific ifreq structures (they are the same
as the netbsd ones, but this disconnects them)

branches: 1.16.2;
Do not read past end of array. Found by gcc -03

branches: 1.15.12; 1.15.16;
Add missing semicolons after NETBSD32TOx_UAP macro calls.

Add SIOCGIFMTU support.

Do not give native requests to netbsd32_ioctl(), use the compat
netbsd32 equivalent instead.

Return the result of copyout. Reminded by Niolas Joly.

Provide SIOCGIFNAME.

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: 1.9.2; 1.9.4; 1.9.8;
Add linux32_getifconf, following recent linux_getifconf addition.

branches: 1.8.2;
Add SIOCGIFHWADDR support.
Tested by Cem Kayali.

Fix SIOCGIFCONF ioctl under compat linux32.

an attempt at linux32_ioctl_socket().

branches: 1.5.6; 1.5.10; 1.5.12; 1.5.14;
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: 1.4.4;
ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

branches: 1.3.18; 1.3.20; 1.3.28;
Merge newlock2 to head.

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

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

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

Don't accept negative value.

Reported-by: syzbot+e71a77402d6668f1868d@syzkaller.appspotmail.com

branches: 1.30.4;
Zero out the ifreq struct for SIOCGIFCONF to avoid up to 127 bytes of stack
disclosure. From Andy Nguyen, many thanks! This is the compat code part
pointed out by ozaki-r@

branches: 1.29.2;
Fix pserialize enter/exit pairs in linux_getifconf and linux32_getifconf

Tested by using a small linux program that uses ioctl(SIOCGIFCONF).
Probably fix PR kern/53259 as well.

branches: 1.28.2;
Fix and make consistent of usages of psz/psref in ifconf variants

branches: 1.27.6;
Use if_acquire and if_release instead of using psref API directly

- Provide if_release for consistency to if_acquire
- Use if_acquire and if_release for ifp iterations
- Make ifnet_psref_class static

branches: 1.26.2;
Apply pserialize and psref to struct ifaddr and its variants

This change makes struct ifaddr and its variants (in_ifaddr and in6_ifaddr)
MP-safe by using pserialize and psref. At this moment, pserialize_perform
and psref_target_destroy are disabled because (1) we don't need them
because of softnet_lock (2) they cause a deadlock because of softnet_lock.
So we'll enable them when we remove softnet_lock in the future.

branches: 1.25.2;
Switch the address list of intefaces to pslist(9)

As usual, we leave the old list to avoid breaking kvm(3) users.

Fix psref isn't released in a case of IFADDR_EMPTY

Use curlwp_bind and curlwp_bindx instead of open-coding LP_BOUND

Protect if_byindex by pserialize

Protect ifnet list with psz and psref

The change ensures that ifnet objects in the ifnet list aren't freed during
list iterations by using pserialize(9) and psref(9).

Note that the change adds a pslist(9) for ifnet but doesn't remove the
original ifnet list (ifnet_list) to avoid breaking kvm(3) users. We
shouldn't use the original list in the kernel anymore.

Unused inits (harmless).

Found by Brainy.

branches: 1.19.2;
Tweak ifconf variants

The tweaks make the code intention clear and make further changes easy.

No functional change.

branches: 1.18.2; 1.18.4; 1.18.8;
Replace open-coded access (and boundary checking) of ifindex2ifnet with
if_byindex() function.

branches: 1.17.2; 1.17.10;
Use copyin/copyout and linux-specific ifreq structures (they are the same
as the netbsd ones, but this disconnects them)

branches: 1.16.2;
Do not read past end of array. Found by gcc -03

branches: 1.15.12; 1.15.16;
Add missing semicolons after NETBSD32TOx_UAP macro calls.

Add SIOCGIFMTU support.

Do not give native requests to netbsd32_ioctl(), use the compat
netbsd32 equivalent instead.

Return the result of copyout. Reminded by Niolas Joly.

Provide SIOCGIFNAME.

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: 1.9.2; 1.9.4; 1.9.8;
Add linux32_getifconf, following recent linux_getifconf addition.

branches: 1.8.2;
Add SIOCGIFHWADDR support.
Tested by Cem Kayali.

Fix SIOCGIFCONF ioctl under compat linux32.

an attempt at linux32_ioctl_socket().

branches: 1.5.6; 1.5.10; 1.5.12; 1.5.14;
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: 1.4.4;
ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

branches: 1.3.18; 1.3.20; 1.3.28;
Merge newlock2 to head.

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

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

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

Zero out the ifreq struct for SIOCGIFCONF to avoid up to 127 bytes of stack
disclosure. From Andy Nguyen, many thanks! This is the compat code part
pointed out by ozaki-r@

Fix pserialize enter/exit pairs in linux_getifconf and linux32_getifconf

Tested by using a small linux program that uses ioctl(SIOCGIFCONF).
Probably fix PR kern/53259 as well.

branches: 1.28.2;
Fix and make consistent of usages of psz/psref in ifconf variants

branches: 1.27.6;
Use if_acquire and if_release instead of using psref API directly

- Provide if_release for consistency to if_acquire
- Use if_acquire and if_release for ifp iterations
- Make ifnet_psref_class static

branches: 1.26.2;
Apply pserialize and psref to struct ifaddr and its variants

This change makes struct ifaddr and its variants (in_ifaddr and in6_ifaddr)
MP-safe by using pserialize and psref. At this moment, pserialize_perform
and psref_target_destroy are disabled because (1) we don't need them
because of softnet_lock (2) they cause a deadlock because of softnet_lock.
So we'll enable them when we remove softnet_lock in the future.

branches: 1.25.2;
Switch the address list of intefaces to pslist(9)

As usual, we leave the old list to avoid breaking kvm(3) users.

Fix psref isn't released in a case of IFADDR_EMPTY

Use curlwp_bind and curlwp_bindx instead of open-coding LP_BOUND

Protect if_byindex by pserialize

Protect ifnet list with psz and psref

The change ensures that ifnet objects in the ifnet list aren't freed during
list iterations by using pserialize(9) and psref(9).

Note that the change adds a pslist(9) for ifnet but doesn't remove the
original ifnet list (ifnet_list) to avoid breaking kvm(3) users. We
shouldn't use the original list in the kernel anymore.

Unused inits (harmless).

Found by Brainy.

branches: 1.19.2;
Tweak ifconf variants

The tweaks make the code intention clear and make further changes easy.

No functional change.

branches: 1.18.2; 1.18.4; 1.18.8;
Replace open-coded access (and boundary checking) of ifindex2ifnet with
if_byindex() function.

branches: 1.17.2; 1.17.10;
Use copyin/copyout and linux-specific ifreq structures (they are the same
as the netbsd ones, but this disconnects them)

branches: 1.16.2;
Do not read past end of array. Found by gcc -03

branches: 1.15.12; 1.15.16;
Add missing semicolons after NETBSD32TOx_UAP macro calls.

Add SIOCGIFMTU support.

Do not give native requests to netbsd32_ioctl(), use the compat
netbsd32 equivalent instead.

Return the result of copyout. Reminded by Niolas Joly.

Provide SIOCGIFNAME.

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: 1.9.2; 1.9.4; 1.9.8;
Add linux32_getifconf, following recent linux_getifconf addition.

branches: 1.8.2;
Add SIOCGIFHWADDR support.
Tested by Cem Kayali.

Fix SIOCGIFCONF ioctl under compat linux32.

an attempt at linux32_ioctl_socket().

branches: 1.5.6; 1.5.10; 1.5.12; 1.5.14;
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: 1.4.4;
ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

branches: 1.3.18; 1.3.20; 1.3.28;
Merge newlock2 to head.

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

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

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

Fix and make consistent of usages of psz/psref in ifconf variants

branches: 1.27.6;
Use if_acquire and if_release instead of using psref API directly

- Provide if_release for consistency to if_acquire
- Use if_acquire and if_release for ifp iterations
- Make ifnet_psref_class static

branches: 1.26.2;
Apply pserialize and psref to struct ifaddr and its variants

This change makes struct ifaddr and its variants (in_ifaddr and in6_ifaddr)
MP-safe by using pserialize and psref. At this moment, pserialize_perform
and psref_target_destroy are disabled because (1) we don't need them
because of softnet_lock (2) they cause a deadlock because of softnet_lock.
So we'll enable them when we remove softnet_lock in the future.

branches: 1.25.2;
Switch the address list of intefaces to pslist(9)

As usual, we leave the old list to avoid breaking kvm(3) users.

Fix psref isn't released in a case of IFADDR_EMPTY

Use curlwp_bind and curlwp_bindx instead of open-coding LP_BOUND

Protect if_byindex by pserialize

Protect ifnet list with psz and psref

The change ensures that ifnet objects in the ifnet list aren't freed during
list iterations by using pserialize(9) and psref(9).

Note that the change adds a pslist(9) for ifnet but doesn't remove the
original ifnet list (ifnet_list) to avoid breaking kvm(3) users. We
shouldn't use the original list in the kernel anymore.

Unused inits (harmless).

Found by Brainy.

branches: 1.19.2;
Tweak ifconf variants

The tweaks make the code intention clear and make further changes easy.

No functional change.

Replace open-coded access (and boundary checking) of ifindex2ifnet with
if_byindex() function.

branches: 1.17.2; 1.17.10;
Use copyin/copyout and linux-specific ifreq structures (they are the same
as the netbsd ones, but this disconnects them)

branches: 1.16.2;
Do not read past end of array. Found by gcc -03

branches: 1.15.12; 1.15.16;
Add missing semicolons after NETBSD32TOx_UAP macro calls.

Add SIOCGIFMTU support.

Do not give native requests to netbsd32_ioctl(), use the compat
netbsd32 equivalent instead.

Return the result of copyout. Reminded by Niolas Joly.

Provide SIOCGIFNAME.

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: 1.9.2; 1.9.4; 1.9.8;
Add linux32_getifconf, following recent linux_getifconf addition.

branches: 1.8.2;
Add SIOCGIFHWADDR support.
Tested by Cem Kayali.

Fix SIOCGIFCONF ioctl under compat linux32.

an attempt at linux32_ioctl_socket().

branches: 1.5.6; 1.5.10; 1.5.12; 1.5.14;
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: 1.4.4;
ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

branches: 1.3.18; 1.3.20; 1.3.28;
Merge newlock2 to head.

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

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

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

Use if_acquire and if_release instead of using psref API directly

- Provide if_release for consistency to if_acquire
- Use if_acquire and if_release for ifp iterations
- Make ifnet_psref_class static

Apply pserialize and psref to struct ifaddr and its variants

This change makes struct ifaddr and its variants (in_ifaddr and in6_ifaddr)
MP-safe by using pserialize and psref. At this moment, pserialize_perform
and psref_target_destroy are disabled because (1) we don't need them
because of softnet_lock (2) they cause a deadlock because of softnet_lock.
So we'll enable them when we remove softnet_lock in the future.

branches: 1.25.2;
Switch the address list of intefaces to pslist(9)

As usual, we leave the old list to avoid breaking kvm(3) users.

Fix psref isn't released in a case of IFADDR_EMPTY

Use curlwp_bind and curlwp_bindx instead of open-coding LP_BOUND

Protect if_byindex by pserialize

Protect ifnet list with psz and psref

The change ensures that ifnet objects in the ifnet list aren't freed during
list iterations by using pserialize(9) and psref(9).

Note that the change adds a pslist(9) for ifnet but doesn't remove the
original ifnet list (ifnet_list) to avoid breaking kvm(3) users. We
shouldn't use the original list in the kernel anymore.

Unused inits (harmless).

Found by Brainy.

branches: 1.19.2;
Tweak ifconf variants

The tweaks make the code intention clear and make further changes easy.

No functional change.

Replace open-coded access (and boundary checking) of ifindex2ifnet with
if_byindex() function.

branches: 1.17.2; 1.17.10;
Use copyin/copyout and linux-specific ifreq structures (they are the same
as the netbsd ones, but this disconnects them)

branches: 1.16.2;
Do not read past end of array. Found by gcc -03

branches: 1.15.12; 1.15.16;
Add missing semicolons after NETBSD32TOx_UAP macro calls.

Add SIOCGIFMTU support.

Do not give native requests to netbsd32_ioctl(), use the compat
netbsd32 equivalent instead.

Return the result of copyout. Reminded by Niolas Joly.

Provide SIOCGIFNAME.

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: 1.9.2; 1.9.4; 1.9.8;
Add linux32_getifconf, following recent linux_getifconf addition.

branches: 1.8.2;
Add SIOCGIFHWADDR support.
Tested by Cem Kayali.

Fix SIOCGIFCONF ioctl under compat linux32.

an attempt at linux32_ioctl_socket().

branches: 1.5.6; 1.5.10; 1.5.12; 1.5.14;
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: 1.4.4;
ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

branches: 1.3.18; 1.3.20; 1.3.28;
Merge newlock2 to head.

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

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

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

Apply pserialize and psref to struct ifaddr and its variants

This change makes struct ifaddr and its variants (in_ifaddr and in6_ifaddr)
MP-safe by using pserialize and psref. At this moment, pserialize_perform
and psref_target_destroy are disabled because (1) we don't need them
because of softnet_lock (2) they cause a deadlock because of softnet_lock.
So we'll enable them when we remove softnet_lock in the future.

branches: 1.25.2;
Switch the address list of intefaces to pslist(9)

As usual, we leave the old list to avoid breaking kvm(3) users.

Fix psref isn't released in a case of IFADDR_EMPTY

Use curlwp_bind and curlwp_bindx instead of open-coding LP_BOUND

Protect if_byindex by pserialize

Protect ifnet list with psz and psref

The change ensures that ifnet objects in the ifnet list aren't freed during
list iterations by using pserialize(9) and psref(9).

Note that the change adds a pslist(9) for ifnet but doesn't remove the
original ifnet list (ifnet_list) to avoid breaking kvm(3) users. We
shouldn't use the original list in the kernel anymore.

Unused inits (harmless).

Found by Brainy.

branches: 1.19.2;
Tweak ifconf variants

The tweaks make the code intention clear and make further changes easy.

No functional change.

Replace open-coded access (and boundary checking) of ifindex2ifnet with
if_byindex() function.

branches: 1.17.2; 1.17.10;
Use copyin/copyout and linux-specific ifreq structures (they are the same
as the netbsd ones, but this disconnects them)

branches: 1.16.2;
Do not read past end of array. Found by gcc -03

branches: 1.15.12; 1.15.16;
Add missing semicolons after NETBSD32TOx_UAP macro calls.

Add SIOCGIFMTU support.

Do not give native requests to netbsd32_ioctl(), use the compat
netbsd32 equivalent instead.

Return the result of copyout. Reminded by Niolas Joly.

Provide SIOCGIFNAME.

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: 1.9.2; 1.9.4; 1.9.8;
Add linux32_getifconf, following recent linux_getifconf addition.

branches: 1.8.2;
Add SIOCGIFHWADDR support.
Tested by Cem Kayali.

Fix SIOCGIFCONF ioctl under compat linux32.

an attempt at linux32_ioctl_socket().

branches: 1.5.6; 1.5.10; 1.5.12; 1.5.14;
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: 1.4.4;
ANSIfy most of the function definitions in sys/compat (but not ndis).
All by the magic of sed ...

branches: 1.3.18; 1.3.20; 1.3.28;
Merge newlock2 to head.

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

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

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