Commit b2f8a74 "clothed" the naked return as inflicted by gofumpt
v0.9.0. Since gofumpt v0.9.2 this rule was moved to "extra" category,
not enabled by default. The only other "extra" rule is to group adjacent
parameters with the same type, which also makes sense.

Enable gofumpt "extra" rules, and reformat the code accordingly.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 67840cc)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

This is mostly a mechanical change, but we also need to change some
types to match the "mode int" argument that golang.org/x/sys/unix
decided to use.

Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
(cherry picked from commit a0e809a)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

Alas, these new constants are already in v1.4.0 release so we can't
remove those right away, but we can mark them as deprecated now
and target removal for v1.5.0.

So,
 - mark them as deprecated;
 - redefine via unix.MPOL_* counterparts;
 - fix the validator code to use unix.MPOL_* directly.

This amends commit a0e809a.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 3741f91)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

This which is already using in CI on Fedora.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit f128234)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

This version was released almost a year ago.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit f4710e5)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

(as well as for testing on Cirrus CI)

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 79b97d4)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 68771cf)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>