mkcomposefs(1) mkcomposefs(1) (NAME) mkcomposefs - composefs (SYNOPSIS) mkcomposefs SOURCE IMAGE (DESCRIPTION) composefs EROFS (content-addressed) . mkcomposefs " composefs" ( mount) . . --from-file . (OPTIONS) SOURCEDIR . IMAGE composefs . mkcomposefs : --digest-store=PATH " " (object store) composefs . SOURCEDIR fsverity ( reflink). . fs-verity . basedir . --print-digest fsverity composefs. --print-digest-only fsverity composefs . IMAGE . --use-epoch ( - unix epoch) . --skip-devices (device nodes) . --skip-xattrs (xattrs) . --user-xattrs "user." . --from-file composefs- dump(5) . "-" stdin . --version . --max-version --version . --threads=count () . --threads . (FORMAT VERSIONING) Composefs . . . . : (--version) (--max-version). mkcomposefs . . . : o 0 - o 1 - overlay whiteout ( 1.0.3) 0 1 . (SANDBOXING RECOMMENDATIONS) . . ( ) mkcomposefs (drop privileges). --from-file uid (file descriptor) . fd 3 mkcomposefs --from-file - /proc/self/fd/3 mkcomposefs (pipeline) . (root) : setpriv --nnp --reuid nobody -- mkcomposefs .... systemd-run -P DynamicUser=yes -P ProtectSystem=strict . ( ) ( seccomp rootfs ). (SEE ALSO) composefs-info(1), mount.composefs(1), composefs-dump(5) composefs: composefs mkcomposefs(1)