CVS log for src/sys/compat/sys/mount.h

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Default branch: MAIN

Add missing decls, make rusage_to_rusage50 static inline.

sys/compat: Don't clobber f_oflags with zero.

Mistake was introduced in previous refactoring.

don't overallocate (follows similar change to compat/sys/statvfs.h)

Ignore the supplied size, and always use the argument size that we know.
Found by maxv@

Yet another idiotic compat syscall that was developed with literally zero
test made. Simply invoking this syscall with _valid parameters_ triggers a
fatal fault, because the kernel tries to write to userland addresses.

With specially-crafted parameters it is easy to completely escalate
privileges into the kernel.

Also the size of the allocation is just obviously wrong, but it looks like
the callers are even more wrong, so not gonna fix it for now.

Reported-by: syzbot+b05096f3114b2820d81c@syzkaller.appspotmail.com

Mostly merge changes from HEAD upto 20200411

deduplicate the conversion function from statvfs -> statfs12

Rebase to HEAD as of a few days ago.

sync with head.

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

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

sync with head

prefix compat with __ in case __dso_hidden is not available

avoid linker warning for compat symbols that are used internally in libc,
by introducing a hidden compat_foo() function, using that internally in
libc, and exposing foo as a strong alias to compat_foo(). I am open for
better ideas.

sync with head.

Sync with HEAD.

Sync with HEAD.

merge christos-time_t

fix fhstat decls

fix fhstat.

sync with head.

Sync with HEAD.

MFSNAMELEN only belongs in compat.

sync with head.

sync with head

sync with head

whitespace.

Make filehandles opaque to userland

Merge from HEAD.

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

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

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

sync with head.

Sync with head.

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

sync with head.

sync with head

file mount.h was added on branch yamt-lazymbuf on 2006-06-21 15:00:00 +0000

update for fhstat.

merge ktrace-lwp.

Sync with HEAD. Here we go again...

file mount.h was added on branch ktrace-lwp on 2005-11-10 14:01:40 +0000

compat code reorg.