NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION FORMAT | CONFIGURATION DIRECTORIES AND PRECEDENCE | EXAMPLE | SEE ALSO | NOTES | COLOPHON

BINFMT.D(5)                       binfmt.d                       BINFMT.D(5)

NAME         top

       binfmt.d - Configure additional binary formats for executables at
       boot

SYNOPSIS         top

       /etc/binfmt.d/*.conf

       /run/binfmt.d/*.conf

       /usr/lib/binfmt.d/*.conf

DESCRIPTION         top

       At boot, systemd-binfmt.service(8) reads configuration files from the
       above directories to register in the kernel additional binary formats
       for executables.

CONFIGURATION FORMAT         top

       Each file contains a list of binfmt_misc kernel binary format rules.
       Consult binfmt_misc.txt[1] for more information on registration of
       additional binary formats and how to write rules.

       Empty lines and lines beginning with ; and # are ignored. Note that
       this means you may not use ; and # as delimiter in binary format
       rules.

CONFIGURATION DIRECTORIES AND PRECEDENCE         top

       Configuration files are read from directories in /etc/, /run/, and
       /usr/lib/, in order of precedence. Each configuration file in these
       configuration directories shall be named in the style of
       filename.conf. Files in /etc/ override files with the same name in
       /run/ and /usr/lib/. Files in /run/ override files with the same name
       in /usr/lib/.

       Packages should install their configuration files in /usr/lib/. Files
       in /etc/ are reserved for the local administrator, who may use this
       logic to override the configuration files installed by vendor
       packages. All configuration files are sorted by their filename in
       lexicographic order, regardless of which of the directories they
       reside in. If multiple files specify the same option, the entry in
       the file with the lexicographically latest name will take precedence.
       It is recommended to prefix all filenames with a two-digit number and
       a dash, to simplify the ordering of the files.

       If the administrator wants to disable a configuration file supplied
       by the vendor, the recommended way is to place a symlink to /dev/null
       in the configuration directory in /etc/, with the same filename as
       the vendor configuration file. If the vendor configuration file is
       included in the initrd image, the image has to be regenerated.

EXAMPLE         top

       Example 1. /etc/binfmt.d/wine.conf example:

           # Start WINE on Windows executables
           :DOSWin:M::MZ::/usr/bin/wine:

SEE ALSO         top

       systemd(1), systemd-binfmt.service(8), systemd-delta(1), wine(8)

NOTES         top

        1. binfmt_misc.txt
           https://www.kernel.org/doc/Documentation/binfmt_misc.txt

COLOPHON         top

       This page is part of the systemd (systemd system and service manager)
       project.  Information about the project can be found at 
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have a bug
       report for this manual page, see 
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.  This
       page was obtained from the project's upstream Git repository 
       ⟨https://github.com/systemd/systemd.git⟩ on 2016-09-01.  If you dis‐
       cover any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org

systemd 231                                                      BINFMT.D(5)