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

add support COMPAT_LINUX for aarch64

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 awa

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.

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PR/55780: Bernd Sieker: setsockopt in Linux emulation misses some options

Fix compat with Linux programs that use longer namelen for sockets

Linux is less strict than NetBSD and permits namelen to be larger
than valid struct sockaddr_in*. If this is the case, truncate th

Fix compat with Linux programs that use longer namelen for sockets

Linux is less strict than NetBSD and permits namelen to be larger
than valid struct sockaddr_in*. If this is the case, truncate the value
to the correct size, so that NetBSD networking does not return an error.

Reviewed by kamil

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Don't accept negative value.

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

Hum, remove incorrect assignment. Userland could have passed a smaller
namelen, and the uninitialized bytes from sb_data were being used later in
the network stack.

Fix memory leak.

Hum, don't pass an mbuf to realloc(). Inspired from copyin32_msg_control().

Don't read data from userland directly. This simply does not work on any
recent x86 CPU (thanks to SMAP) and all architectures that forbid direct
access to userland from the kernel. But I guess no on

Don't read data from userland directly. This simply does not work on any
recent x86 CPU (thanks to SMAP) and all architectures that forbid direct
access to userland from the kernel. But I guess no one noticed because no
one ever uses compat_linux, right?

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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@

- avoid uninitialised memory usage

Apply the recent fixes to {send,recv}mmsg() to their compat variants.

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.

Fix COMPAT_NETBSD32 cmsg handling:

1. alignment was wrong for > 1 message
2. macros were doing incorrect pointer comparisons, fortunately ending
the iteration early after the fists cmsg instead o

Fix COMPAT_NETBSD32 cmsg handling:

1. alignment was wrong for > 1 message
2. macros were doing incorrect pointer comparisons, fortunately ending
the iteration early after the fists cmsg instead of crashing.
3. don't output 32 bit ktrace records for cmsg. 32 bit programs running
under emulation on 64 bit systems should produce 64 bit ktrace records
so that the native ktrace can handle the records; remove extra arguments
that are now not needed (the 32 bit msghdr).
4. output the correct type for cmsg trace records.
5. output all the cmsg records in traces instead of just the first one.

Welcome to 8.99.15 because of the argument removal.

XXX: Really all the code should be changed to use the CMSG_{FIRST,NXT}HDR
macros...

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PR/53103: Timo Buhrmester: linux emulation of sendto(2) broken

The sockargs refactoring broke it, because sockargs only works with a user
address. Added an argument to sockargs to indicate where the

PR/53103: Timo Buhrmester: linux emulation of sendto(2) broken

The sockargs refactoring broke it, because sockargs only works with a user
address. Added an argument to sockargs to indicate where the address is
coming from. Welcome to 8.99.14.

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

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

add sendmmsg and recvmmsg

handle accept4 for i386

Do not compile accept4 on i386, there is no such syscall in Linux.

implement accept4

Make the ktrace record written by do_sys_sendmsg/do_sys_recvmsg overridable
by the caller. Use this in compat_netbsd32 to log the 32bit version, so
the 32bit userland kdump is happy.

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, pseria

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.

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Switch the address list of intefaces to pslist(9)

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