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SQUASHFS/squashfs-tools-4.4/RELEASE-READMEs/README-4.0
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SQUASHFS/squashfs-tools-4.4/RELEASE-READMEs/README-4.0
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SQUASHFS 4.0 - A squashed read-only filesystem for Linux
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Copyright 2002-2009 Phillip Lougher <phillip@lougher.demon.co.uk>
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Released under the GPL licence (version 2 or later).
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Welcome to Squashfs 4.0. This is an initial tools only release to
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support users of the 2.6.29 kernel, following the mainlining of Squashfs
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earlier this year.
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Later releases will probably contain kernel patches supporting 4.0
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layouts for earlier kernels.
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New Mksquashfs options
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----------------------
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Mksquashfs now supports pseudo files, these allow fake directories, character
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and block devices to be specified and added to the Squashfs filesystem being
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built, rather than requiring them to be present in the source directories.
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This, for example, allows device nodes to be added to the filesystem without
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requiring root access.
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Two options are supported, -p allows one pseudo file to be specified on the
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command line, and -pf allows a pseudo file to be specified containing a
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list of pseduo definitions, one per line.
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Pseudo device nodes are specified using 7 arguments
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Filename type mode uid gid major minor
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Where type is either
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b - for block devices, and
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c - for character devices
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mode is the octal mode specifier, similar to that expected by chmod.
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Uid and gid can be either specified as a decimal number, or by name.
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For example:
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/dev/chr_dev c 666 root root 100 1
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/dev/blk_dev b 444 0 0 200 200
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Directories are specified using 5 arguments
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Filename type mode uid gid
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Where type is d.
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