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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-05-27 14:57:48 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-05-30 17:49:40 +0200
commitceb86b571c1cabf2a0890603b140a1af99912fd9 (patch)
tree40c6071c057b474b483d692a16dd5dc7a402b0d3 /doc/gensquashfs.1
parent4332c116b303e0f86aaac4ae0bf699db5744769d (diff)
Cleanup: move man pages to the respective program source directories
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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-.TH GENSQUASHFS "1" "June 2019" "generate squashfs images" "User Commands"
-.SH NAME
-gensquashfs \- generate squashfs images
-.SH SYNOPSIS
-.B gensquashfs
-[\fI\,OPTIONS\/\fR] <squashfs-file>\/\fR
-.SH DESCRIPTION
-Generate a SquashFS image.
-.SH OPTIONS
-.TP
-\fB\-\-pack\-file\fR, \fB\-F\fR <file>
-Use a \fBgen_init_cpio\fR style description file. The file format is specified
-below. If \fB\-\-pack\-dir\fR is used, input file paths are relative to the
-pack directory, otherwise they are relative to the directory the pack file
-is in.
-.TP
-\fB\-\-pack\-dir\fR, \fB\-D\fR <directory>
-If \fB\-\-pack\-file\fR is used, this is the root path relative to which to
-read files. If no pack file is specified, pack the contents of the given
-directory into a SquashFS image. The directory becomes the root of the file
-system.
-.TP
-\fB\-\-compressor\fR, \fB\-c\fR <name>
-Select the compressor to use.
-Run \fBgensquashfs \-\-help\fR to get a list of all available compressors
-and the default selection.
-.TP
-\fB\-\-comp\-extra\fR, \fB\-X\fR <options>
-A comma separated list of extra options for the selected compressor. Specify
-\fBhelp\fR to get a list of available options.
-.TP
-\fB\-\-num\-jobs\fR, \fB\-j\fR <count>
-If libsquashfs was compiled with a built in thread pool based, parallel data
-compressor, this option can be used to set the number of compressor
-threads. If not set, the default is the number of available CPU cores.
-.TP
-\fB\-\-queue\-backlog\fR, \fB\-Q\fR <count>
-Maximum number of data blocks in the thread worker queue before the packer
-starts waiting for the block processors to catch up. Higher values result
-in higher memory consumption. Defaults to 10 times the number of workers.
-.TP
-\fB\-\-block\-size\fR, \fB\-b\fR <size>
-Block size to use for Squashfs image.
-Defaults to 131072.
-.TP
-\fB\-\-dev\-block\-size\fR, \fB\-B\fR <size>
-Device block size to padd the image to.
-Defaults to 4096.
-.TP
-\fB\-\-keep\-time\fR, \fB\-k\fR
-When using \fB\-\-pack\-dir\fR only, use the timestamps from the input files
-instead of setting defaults on all input paths. The root inode and the
-modification time on the SquashFS image itself will still be set to defaults.
-.TP
-\fB\-\-one\-file\-system\fR, \fB\-o\fR
-When using \fB\-\-pack\-dir\fR only, stay in the local filesystem and do not
-cross mount points.
-.TP
-\fB\-\-defaults\fR, \fB\-d\fR <options>
-A comma separated list of default values for
-implicitly created directories.
-The following values can be set:
-.TS
-tab(;) allbox;
-l l
-l l
-l l
-l l
-l l
-rd.
-\fBOption\fR;\fBDefault\fR
-uid=<value>;0
-gid=<value>;0
-mode=<value>;0755
-mtime=<value>;\fB$SOURCE\_DATE\_EPOCH\fR if set, 0 otherwise
-.TE
-.TP
-.TP
-\fB\-\-set\-uid\fR, \fB\-u\fR <number>
-Force the owners user ID for ALL inodes to this value, no matter what the pack
-file or directory entries actually specify.
-.TP
-\fB\-\-set\-gid\fR, \fB\-g\fR <number>
-Force the owners group ID for ALL inodes to this value, no matter what the pack
-file or directory entries actually specify.
-.TP
-\fB\-\-all\-root\fR
-A short hand for `\-\-set\-uid 0 \-\-set\-gid 0`.
-.TP
-\fB\-\-selinux\fR, \fB\-s\fR <file>
-If built with SELinux support, use the given SELinux label file to add context
-labels to the elements packed into the SquashFS image.
-.TP
-\fB\-\-exportable\fR, \fB\-e\fR
-Generate an export table for NFS support.
-.TP
-\fB\-\-no\-tail\-packing\fR, \fB\-T\fR
-Do not perform tail end packing on files that are larger than the specified
-block size.
-.TP
-\fB\-\-force\fR, \fB\-f\fR
-Overwrite the output file if it exists.
-.TP
-\fB\-\-quiet\fR, \fB\-q\fR
-Do not print out progress reports.
-.TP
-\fB\-\-help\fR, \fB\-h\fR
-Print help text and exit.
-.TP
-\fB\-\-version\fR, \fB\-V\fR
-Print version information and exit.
-.SH INPUT FILE FORMAT
-The input file contains a simple, newline separated list that describe the
-files to be included in the squashfs image:
-.PP
-.in +4n
-.nf
-# a comment
-file <path> <mode> <uid> <gid> [<location>]
-dir <path> <mode> <uid> <gid>
-nod <path> <mode> <uid> <gid> <dev_type> <maj> <min>
-slink <path> <mode> <uid> <gid> <target>
-link <path> <dummy> <dummy> <dummy> <target>
-pipe <path> <mode> <uid> <gid>
-sock <path> <mode> <uid> <gid>
-.fi
-.in
-
-.TS
-tab(;) allbox;
-l l
-l l
-l l
-l l
-l l
-l l
-l l
-l l
-l l
-rd.
-<path>;T{
-Absolute path of the entry in the image. Can be put in quotes
-if some components contain spaces.
-T}
-<location>;T{
-Optional location of the input file. Can be specified relative to either the
-description file or the pack directory. If omitted, the image path is used
-as a relative path.
-T}
-<target>;Symlink or hardlink target.
-<mode>;Mode/permissions of the entry.
-<uid>;Numeric user id.
-<gid>;Numeric group id.
-<dev_type>;Device type (b=block, c=character).
-<maj>;Major number of a device special file.
-<min>;Minor number of a device special file.
-.TE
-
-.PP
-Example:
-.PP
-.in +4n
-.nf
-# A simple squashfs image
-dir /dev 0755 0 0
-nod /dev/console 0600 0 0 c 5 1
-dir /root 0700 0 0
-dir /sbin 0755 0 0
-
-# Add a file. Input is relative to pack dir or listing path
-file /sbin/init 0755 0 0 ../init/sbin/init
-
-# Read from ./bin/bash relative to pack dir or listing path
-# /bin is created implicitly with default attributes.
-file /bin/bash 0755 0 0
-
-# file name with a space in it and a "special" name
-file "/opt/my app/\\"special\\"/data" 0600 0 0
-.fi
-.in
-.SH ENVIRONMENT
-If the command line switch \fB\-\-defaults\fR is not used or no default mtime
-is specified, the value of the environment variable \fBSOURCE\_DATE\_EPOCH\fR
-is used for all file and filesystem timestamps.
-
-If \fBSOURCE\_DATE\_EPOCH\fR is not set, not a parsable number or it is out of
-range, the timestamps default to 0.
-
-Environment variables are only used if no explicit command line switches
-are set. Explicit command line switches are always preferred over the
-environment variables.
-.SH SEE ALSO
-rdsquashfs(1), tar2sqfs(1)
-.SH AUTHOR
-Written by David Oberhollenzer.
-.SH COPYRIGHT
-Copyright \(co 2019 David Oberhollenzer
-License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
-.br
-This is free software: you are free to change and redistribute it.
-There is NO WARRANTY, to the extent permitted by law.