[Bug 225343] multimedia/v4l_compat: Incorrect EVIOCGMTSLOTS ioctl which breaks libevdev

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225343

--- Comment #4 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=aa310ebfba3d49a0b6b03a103b969731a8136a73

commit aa310ebfba3d49a0b6b03a103b969731a8136a73
Author:     Mariusz Zaborski <oshogbo@FreeBSD.org>
AuthorDate: 2021-06-09 21:46:51 +0000
Commit:     Mariusz Zaborski <oshogbo@FreeBSD.org>
CommitDate: 2021-06-10 10:41:29 +0000

    libcasper: fix descriptors numbers

    Casper services expect that the first 3 descriptors (stdin/stdout/stderr)
    will point to /dev/null. Which Casper will ensure later. The Casper
    services are forked from the original process. If the initial process
    closes one of those descriptors, Casper may reuse one of them for it on
    purpose. If this is the case, then renumarate the descriptors used by
    Casper to higher numbers. This is done already after the fork, so it
    doesn't break the parent process.

    PR:             225343
    Reported by:    Borja Marcos <borjam (at) sarenet.es>
    Tested by:      jkim@

 lib/libcasper/libcasper/libcasper_impl.c | 27 +++++++++++++++++++++++++++
 lib/libcasper/libcasper/libcasper_impl.h |  1 +
 lib/libcasper/libcasper/service.c        | 23 +++++++++++++----------
 lib/libcasper/libcasper/zygote.c         | 15 +++++++++------
 4 files changed, 50 insertions(+), 16 deletions(-)

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