mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
124 lines
3.5 KiB
Groff
124 lines
3.5 KiB
Groff
.Dd $Mdocdate: October 7 2015 $
|
|
.Dt MKINITRD 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm mkinitrd
|
|
.Nd make initialization ramdisk
|
|
.Sh SYNOPSIS
|
|
.Nm mkinitrd
|
|
.Op Fl \-filter Ns "=" Ns Ar rules-file
|
|
.Op Fl \-format Ns "=" Ns Ar format
|
|
.Op Fl \-manifest Ns "=" Ns Ar manifest-file
|
|
.Fl o Ar destination
|
|
.Ar directory ...
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
produces a
|
|
.Xr initrd 7
|
|
for the Sortix
|
|
.Xr kernel 7
|
|
at the
|
|
.Ar destination .
|
|
It is a checksummed achieve in the
|
|
.In sortix/initrd.h
|
|
format of files and directories.
|
|
.Pp
|
|
Every specified
|
|
.Ar directory
|
|
is used as a root directory and is recursively searched for files and
|
|
directories matching the filter. If multiple directories are specified, the
|
|
directories are merged together. In case two files with the same path conflict,
|
|
precedence is given to the file in the root directory specified first.
|
|
.Pp
|
|
The resulting archieve has a crc32 checksum embedded for consistency check
|
|
during
|
|
.Xr kernel 7
|
|
extraction. Hardlinks are detected and preserved to avoid data duplication.
|
|
Inode times are truncated to second precision due to format limitations. Inode
|
|
are stored with uid 0 and gid 0 of the root user. The format is not compressed
|
|
but can be compressed externally if it is decompressed during bootloading.
|
|
.Pp
|
|
.Xr initrdfs 8
|
|
can be used to view the files produced by
|
|
.Nm .
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width "12345678"
|
|
.It Fl \-filter Ns "=" Ns Ar rule-file
|
|
Include only files and directories during the recursive search that matches
|
|
rules in the
|
|
.Ar rule-file
|
|
in the format specified under
|
|
.Sx FILTER RULES .
|
|
.It Fl \-format Ns "=" Ns Ar format
|
|
Produce the achieve in the specified format. This is for forward compatibility
|
|
and only
|
|
.Sy sortix-initrd-2
|
|
is supported.
|
|
.Sy default
|
|
is an alias for the newest format
|
|
.Sy sortix-initrd-2 .
|
|
.Nm
|
|
will default to a newer format when one is introduced and this allows
|
|
.Nm
|
|
to support old callers during the transitional period.
|
|
.It Fl \-manifest Ns "=" Ns Ar manifest-file
|
|
Include only files and directories during the recursive search whose path
|
|
exactly matches a line in the
|
|
.Ar manifest-file .
|
|
.It Fl o , Fl \-output Ns "=" Ns Ar destination
|
|
Store the produced
|
|
.Xr initrd 7
|
|
at the specified
|
|
.Ar destination .
|
|
.El
|
|
.Sh FILTER RULES
|
|
The rule format is line based and leading whitespace is skipped. Lines starting
|
|
with a
|
|
.Li #
|
|
character are ignored as comments. The first word on a line must be one of
|
|
the following commands and the rest of the line is its parameter. Trailing
|
|
whitespace is not ignored.
|
|
.Bl -tag -width "12345678"
|
|
.It Sy default Ar boolean
|
|
The
|
|
.Ar boolean
|
|
parameter is either
|
|
.Sy true
|
|
or
|
|
.Sy false
|
|
and determines whether a file or directory is included if no other rules match
|
|
it. This defaults to
|
|
.Sy true.
|
|
.It Sy include Ar path
|
|
Include the file or directory if it matches
|
|
.Ar path .
|
|
.It Sy exclude Ar path
|
|
Exclude the file or directory if it matches
|
|
.Ar path .
|
|
.El
|
|
.Pp
|
|
The rules are checked on the paths relative to the root directories during the
|
|
recursive descent. The last rule to match a path decides whether it is
|
|
included or not. Directory are not descended into if they are excluded. The
|
|
pattern patch is simple and matches paths exactly.
|
|
.Sh EXIT STATUS
|
|
.Nm
|
|
will exit 0 on success and non-zero otherwise.
|
|
.Sh EXAMPLES
|
|
.Bd -literal
|
|
# By default include everything except these directories:
|
|
exclude /dev
|
|
exclude /src/sysroot
|
|
exclude /tmp
|
|
.Ed
|
|
.Sh SEE ALSO
|
|
.Xr initrd 7 ,
|
|
.Xr kernel 7 ,
|
|
.Xr initrdfs 8 ,
|
|
.Xr update-initrd 8
|
|
.Sh BUGS
|
|
The path pattern matching should be upgraded to use
|
|
.Xr fnmatch 3 .
|
|
The initrd format does not losslessly represent the Sortix
|
|
.Li struct stat .
|