1BINFMT.D(5)                        binfmt.d                        BINFMT.D(5)
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NAME

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

9       /etc/binfmt.d/*.conf
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11       /run/binfmt.d/*.conf
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13       /usr/lib/binfmt.d/*.conf
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DESCRIPTION

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

21       Each file contains a list of binfmt_misc kernel binary format rules.
22       Consult binfmt_misc.rst[1] for more information on registration of
23       additional binary formats and how to write rules.
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25       Empty lines and lines beginning with ; and # are ignored. Note that
26       this means you may not use ; and # as delimiter in binary format rules.
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CONFIGURATION DIRECTORIES AND PRECEDENCE

29       Configuration files are read from directories in /etc/, /run/, and
30       /usr/lib/, in order of precedence. Each configuration file in these
31       configuration directories shall be named in the style of filename.conf.
32       Files in /etc/ override files with the same name in /run/ and
33       /usr/lib/. Files in /run/ override files with the same name in
34       /usr/lib/.
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36       Packages should install their configuration files in /usr/lib/. Files
37       in /etc/ are reserved for the local administrator, who may use this
38       logic to override the configuration files installed by vendor packages.
39       All configuration files are sorted by their filename in lexicographic
40       order, regardless of which of the directories they reside in. If
41       multiple files specify the same option, the entry in the file with the
42       lexicographically latest name will take precedence. It is recommended
43       to prefix all filenames with a two-digit number and a dash, to simplify
44       the ordering of the files.
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46       If the administrator wants to disable a configuration file supplied by
47       the vendor, the recommended way is to place a symlink to /dev/null in
48       the configuration directory in /etc/, with the same filename as the
49       vendor configuration file.
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EXAMPLE

52       Example 1. /etc/binfmt.d/wine.conf example:
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54           # Start WINE on Windows executables
55           :DOSWin:M::MZ::/usr/bin/wine:
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SEE ALSO

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

61        1. binfmt_misc.rst
62           https://www.kernel.org/doc/Documentation/admin-guide/binfmt-misc.rst
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66systemd 219                                                        BINFMT.D(5)