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.gitignore vendored
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squashfs-4.1.tar.bz2
/squashfs-4.1.tar.bz2
/squashfs4.1.tar.gz
/squashfs-4.2-2010-12-23.bz2
/squashfs-4.2-20101223.bz2
/squashfs-4.2-20101231.bz2
/squashfs4.2.tar.gz
/squashfs4.3.tar.gz
/unsquashfs.1
/mksquashfs.1

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mksquashfs.1
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.TH MKSQUASHFS 1 "2014\-05\-13" "4.3" "create and append squashfs filesystems"
.SH NAME
mksquashfs \- tool to create and append to squashfs filesystems
.SH SYNOPSIS
\fBmksquashfs\fR \fISOURCE\fR [\fISOURCE2\fR \fI...\fR] \fIDESTINATION\fR [\fIOPTIONS\fR]
.SH DESCRIPTION
Squashfs is a highly compressed read\-only filesystem for Linux. It uses zlib compression to compress both files, inodes and directories. Inodes in the system are very small and all blocks are packed to minimize data overhead. Block sizes greater than 4K are supported up to a maximum of 64K.
.PP
Squashfs is intended for general read\-only filesystem use, for archival use (i.e. in cases where a .tar.gz file may be used), and in constrained block device/memory systems (e.g. embedded systems) where low overhead is needed.
.SH OPTIONS
.SS Filesystem build options
.IP "\-comp \fICOMPRESSION\fR" 4
select \fICOMPRESSION\fR compression. Compressors available: gzip (default), lzma (no kernel support), lzo, lz4 and xz.
.IP "\-b \fIBLOCK_SIZE\fR"
set data block to \fIBLOCK_SIZE\fR. Default 131072 bytes. Optionally K or M can be used as a suffix to specify kilobytes or megabytes, respectively.
.IP "\-no\-exports" 4
don't make the filesystem exportable via NFS.
.IP "\-no\-sparse" 4
don't detect sparse files.
.IP "\-no\-xattrs" 4
don't store extended attributes.
.IP "\-xattrs" 4
store extended attributes (default).
.IP "\-noI" 4
do not compress inode table.
.IP "\-noD" 4
do not compress data blocks.
.IP "\-noF" 4
do not compress fragment blocks.
.IP "\-noX" 4
do not compress extended attributes.
.IP "\-no\-fragments" 4
do not use fragments.
.IP "\-always\-use\-fragments" 4
use fragment blocks for files larger than block size.
.IP "\-no\-duplicates" 4
do not perform duplicate checking.
.IP "\-all\-root" 4
make all files owned by root.
.IP "\-force\-uid uid" 4
set all file uids to uid.
.IP "\-force\-gid gid" 4
set all file gids to gid.
.IP "\-nopad" 4
do not pad filesystem to a multiple of 4K.
.IP "\-keep\-as\-directory" 4
if one source directory is specified, create a root directory containing that directory, rather than the contents of the directory.
.SS Filesystem filter options
.IP "\-p \fIPSEUDO_DEFINITION\fR" 4
Add pseudo file definition.
.IP "\-pf \fIPSEUDO_FILE\fR" 4
Add list of pseudo file definitions.
.IP "\-sort \fISORT_FILE\fR" 4
sort files according to priorities in \fISORT_FILE\fR. One file or dir with priority per line. Priority \-32768 to 32767, default priority 0.
.IP "\-ef \fIEXCLUDE_FILE\fR" 4
list of exclude dirs/files. One per line.
.IP "\-wildcards" 4
Allow extended shell wildcards (globbing) to be used in exclude dirs/files
.IP "\-regex" 4
Allow POSIX regular expressions to be used in exclude dirs/files.
.SS Filesystem append options
.IP "\-noappend" 4
do not append to existing filesystem.
.IP "\-root\-becomes \fINAME\fR" 4
when appending source files/directories, make the original root become a subdirectory in the new root called \fINAME\fR, rather than adding the new source items to the original root.
.SS Mksquashfs runtime options:
.IP "\-version" 4
print version, licence and copyright message.
.IP "\-exit\-on\-error" 4
treat normally ignored errors as fatal.
.IP "\-recover \fINAME\fR" 4
recover filesystem data using recovery file \fINAME\fR.
.IP "\-no\-recovery" 4
don't generate a recovery file.
.IP "\-info" 4
print files written to filesystem.
.IP "\-no\-progress" 4
don't display the progress bar.
.IP "\-progress" 4
display progress bar when using the \-info option.
.IP "\-processors \fINUMBER\fR" 4
Use \fINUMBER\fR processors. By default will use number of processors available.
.IP "\-mem \fISIZE\fR" 4
Use \fISIZE\fR physical memory. Optionally K or M can be used as a suffix for kilobytes or megabytes, respectively. Default 25% of memory.
.IP "\-read\-queue \fISIZE\fR" 4
Deprecated. Use \-mem instead.
.IP "\-write\-queue \fISIZE\fR" 4
Deprecated. Use \-mem instead.
.IP "\-fragment\-queue \fISIZE\fR" 4
Deprecated. Use \-mem instead.
.SS Miscellaneous options
.IP "\-root\-owned" 4
alternative name for \-all\-root.
.IP "\-noInodeCompression" 4
alternative name for \-noI.
.IP "\-noDataCompression" 4
alternative name for \-noD.
.IP "\-noFragmentCompression" 4
alternative name for \-noF.
.IP "\-noXattrCompression" 4
alternative name for \-noX.
.IP "\-Xhelp" 4
print compressor options for selected compressor
.SS Compressors available and compressor specific options
.IP "gzip (default)"
.IP "\-Xcompression-level \fIcompression\-level\fR" 4
\fIcompression\-level\fR should be 1 .. 9 (default 9)
.IP "\-Xwindow\-size \fIwindow\-size\fR" 4
\fIwindow\-size\fR should be 8 .. 15 (default 15)
.IP "\-Xstrategy strategy1,strategy2,...,strategyN" 4
Compress using strategy1,strategy2,...,strategyN in turn and choose the best compression. Available strategies: default, filtered, huffman_only, run_length_encoded and fixed
.IP "lzmz (no options) (no kernel support)" 4
.IP "lzo" 4
.IP "\-Xalgorithm \fIalgorithm\fR" 4
Where \fIalgorithm\fR is one of: lzo1x_1, lzo1x_1_11, lzo1x_1_12, lzo1x_1_15 or lzo1x_999. (default lzo1x_999)
.IP "\-Xcompression\-level \fIcompression\-level\fR" 4
\fIcompression\-level\fR should be 1 .. 9 (default 8)
.IP "lz4" 4
.IP "\-Xhc"
Compress using LZ4 High Compression
.IP "xz" 4
.IP "\-Xbcj filter1,filter2,...,filterN" 4
Compress using filter1,filter2,...,filterN in turn (in addition to no filter), and choose the best compression. Available filters: x86, arm, armthumb, powerpc, sparc, ia64.
.IP "\-Xdict\-size \fIDICT_SIZE\fR" 4
Use \fIDICT_SIZE\fR as the XZ dictionary size. The dictionary size can be specified as a percentage of the block size, or as an absolute value. The dictionary size must be less than or equal to the block size and 8192 bytes or larger. It must also be storable in the xz header as either 2^n or as 2^n+2^(n+1). Example dict\-sizes are 75%, 50%, 37.5%, 25%, or 32K, 16K, 8K etc.
.SH SEE ALSO
unsquashfs(1)
.SH HOMEPAGE
More information about mksquashfs and the squashfs filesystem can be found at <\fIhttp://squashfs.sourceforge.net/\fR>.
.SH AUTHOR
squashfs was written by Phillip Lougher <\fIplougher@users.sourceforge.net\fR>.
.PP
This manual page was written by Daniel Baumann <\fIdaniel.baumann@progress\-technologies.net\fR>. With some updates for 4.3 for use with Fedora.

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smoke-test.sh Normal file
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#!/usr/bin/sh
WORK=$(/usr/bin/mktemp -d /tmp/sqfs.XXXXXXXX)
SRC=$WORK/src/
MNT=$WORK/mnt/
UNSQ=$WORK/unsq/
SQSH=$WORK/squash.sqsh
DIFF1=$WORK/sqfs_mnt.diff
DIFF2=$WORK/unsqfs.diff
MKSQ_OUT=$WORK/mksquashfs.out
UNSQ_OUT=$WORK/unsquashfs.out
/usr/bin/mkdir $SRC $MNT
if [ $? -ne 0 ]
then
exit 1
fi
# Copy over src files
/usr/bin/cp -R /etc/* $SRC
if [ $? -ne 0 ]
then
exit 1
fi
/usr/sbin/modprobe squashfs
if [ $? -ne 0 ]
then
exit 1
fi
/usr/sbin/mksquashfs $SRC $SQSH > $MKSQ_OUT 2>&1
if [ $? -ne 0 ]
then
echo "mksquashfs failed: See $MKSQ_OUT"
exit 1
fi
/usr/bin/mount $SQSH $MNT -t squashfs -o loop
if [ $? -ne 0 ]
then
exit 1
fi
/usr/bin/diff -Nupr --no-dereference $SRC $MNT > $DIFF1 2>&1
if [ $? -ne 0 ]
then
echo "Squashfs mount inconsistent with source"
echo "Test directory: $WORK"
exit 1
fi
/usr/bin/umount $MNT
if [ $? -ne 0 ]
then
exit 1
fi
echo "Test succeeded 1/2: Squashfs filesystem consistent with source"
/usr/sbin/unsquashfs -d $UNSQ $SQSH > $UNSQ_OUT 2>&1
if [ $? -ne 0 ]
then
echo "unsquashfs failed: See $UNSQ_OUT"
exit 1
fi
/usr/bin/diff -Nupr --no-dereference $SRC $UNSQ > $DIFF2 2>&1
if [ $? -ne 0 ]
then
echo "Unsquashfs extracted output inconsistent with source"
echo "Test directory: $WORK"
exit 1
fi
echo "Test succeeded 2/2: Unsquashfs extracted output consistent with source"
/usr/bin/rm -Rf $WORK

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SHA512 (squashfs4.3.tar.gz) = 854ed7acc99920f24ecf11e0da807e5a2a162eeda55db971aba63a03f0da2c13b20ec0564a906c4b0e415bd8258b273a10208c7abc0704f2ceea773aa6148a79
SHA512 (mksquashfs.1) = a9e0a63edf70686b12a80983fff31437d54196849622f859f8781356c5ae3293cbc37e78335e0270ab36bbabbdb879aa1e1ae31101440f7c72f5d18777d3ff5a
SHA512 (unsquashfs.1) = 6e1be535d370fb39b2a0e47c98052727bab94ae4f306bb3eb8f7dd07fb84bf985e82ba66bb2030e08261473cffc34d1c1973b27e77cb7127d588e24297f2f0a3

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unsquashfs.1
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.TH UNSQUASHFS 1 "2014\-05\-13" "4.3" "uncompress squashfs filesystems"
.SH NAME
mksquashfs \- tool to uncompress squashfs filesystems
.SH SYNOPSIS
\fBunsquashfs\fR [\fIOPTIONS\fR] \fIFILESYSTEM\fR [\fIdirectories or files to extract\fR]
.SH DESCRIPTION
Squashfs is a highly compressed read\-only filesystem for Linux. It uses zlib compression to compress both files, inodes and directories. Inodes in the system are very small and all blocks are packed to minimize data overhead. Block sizes greater than 4K are supported up to a maximum of 64K.
.PP
Squashfs is intended for general read\-only filesystem use, for archival use (i.e. in cases where a .tar.gz file may be used), and in constrained block device/memory systems (e.g. embedded systems) where low overhead is needed.
.SH OPTIONS
.IP "\-v, \-version" 4
print version, licence and copyright information.
.IP "\-d \fIPATHNAME\fR, \-dest \fIPATHNAME\fR" 4
unsquash to \fIPATHNAME\fR, default "squashfs\-root".
.IP "\-n, \-no\-progress" 4
don't display the progress bar.
.IP "\-no, \-no\-xattrs" 4
don't extract xattrs in file system.
.IP "\-x, \-xattrs" 4
extract xattrs in file system (default).
.IP "\-u, \-user\-xattrs" 4
only extract user xattrs in file system. Enables extracting xattrs.
.IP "\-p \fINUMBER\fR, \-processors \fINUMBER\fR" 4
use \fINUMBER\fR processors. By default will use number of processors available.
.IP "\-i, \-info" 4
print files as they are unsquashed.
.IP "\-li, \-linfo" 4
print files as they are unsquashed with file attributes (like ls \-l output).
.IP "\-l, \-ls" 4
list filesystem, but don't unsquash.
.IP "\-ll, \-lls" 4
list filesystem with file attributes (like ls \-l output), but don't unsquash.
.IP "\-f, \-force" 4
if file already exists then overwrite.
.IP "\-s, \-stat" 4
display filesystem superblock information.
.IP "\-e \fIEXTRACT_FILE\fR, \-ef \fIEXTRACT_FILE\fR" 4
list of directories or files to extract. One per line.
.IP "\-da \fISIZE\fR, \-data\-queue \fISIZE\fR" 4
Set data queue to \fISIZE\fR Mbytes. Default 256 Mbytes.
.IP "\-fr \fISIZE\fR, \-frag\-queue \fISIZE\fR" 4
Set fragment queue to \fISIZE\fR Mbytes. Default 256 Mbytes.
.IP "\-r, \-regex" 4
treat extract names as POSIX regular expressions rather than use the default shell wildcard expansion (globbing).
.SS Decompressors available
.IP "gzip" 4
.IP "lzma" 4
.IP "lzo" 4
.IP "lz4" 4
.IP "xz" 4
.SH SEE ALSO
mksquashfs(1)
.SH HOMEPAGE
More information about unsquashfs and the squashfs filesystem can be found at <\fIhttp://squashfs.sourceforge.net/\fR>.
.SH AUTHOR
squashfs was written by Phillip Lougher <\fIplougher@users.sourceforge.net\fR>.
.PP
This manual page was written by Daniel Baumann <\fIdaniel.baumann@progress\-technologies.net\fR>. With some updates for 4.3 for use with Fedora.