@raharper found this issue and provided examlpe squashfs

example.squashfs.zip

output output of unsquashfs, but squashtool fails.

$ unsquashfs -lls /tmp/example.squashfs
Parallel unsquashfs: Using 8 processors
2 inodes (2 blocks) to write

drwxr-xr-x 1002/1002                96 2021-01-13 15:17 squashfs-root
-rw-r--r-- 1002/1002               434 2021-01-13 15:17 squashfs-root/system-systemd-cryptsetup.slice
-rw-r--r-- 1002/1002               434 2021-01-13 15:17 squashfs-root/system-systemd\x2dcryptsetup.slice


$ squashtool list /tmp/example.squashfs
 drwxr-xr-x  1 1002 1002           96 Jan  13 15:17 /
 -rw-r--r--  1 1002 1002          434 Jan  13 15:17 /system-systemd-cryptsetup.slice
2021/01/13 15:36:22 walk / failed: file does not exist

good for us, squashtool-ng's rdsquashfs seems to be fine:

$ /usr/bin/rdsquashfs --list=/ /tmp/example.squashfs
-rw-r--r-- 1002/1002 434 system-systemd-cryptsetup.slice
-rw-r--r-- 1002/1002 434 system-systemd\x2dcryptsetup.slice

@tych0 suggested using errors.wrap. We don't currently have any errors usage here, but its good to have to help debug.

See #11 (comment)

For some situations like appending a SquashFS to some other form of file, it is useful to be able to read from that SquashFS with an offset, this function could be named something along the lines of OpenSquashfsWithOffset()

Hi, buddies.
I got errors during using your project on arm64 and i586 :
vendor/github.com/anuvu/squashfs/squash.go:185:33: cannot use f.ModTime().Unix() (value of type int64) as int32 value in struct literal
[i586] vendor/github.com/anuvu/squashfs/squash.go:238:12: cannot use uint64(nlinks) (value of type uint64) as uint32 value in struct literal
[i586] vendor/github.com/anuvu/squashfs/squash.go:244:12: cannot use int64(blksize) (value of type int64) as int32 value in struct literal
[i586] vendor/github.com/anuvu/squashfs/squash.go:341:40: cannot use _Ctype_ulong(f.Pos) (value of type _Ctype_ulong) as _Ctype_ulonglong value in variable declaration
[i586] vendor/github.com/anuvu/squashfs/squash.go:598:3: cannot use _Ctype_ulong(sqfs.super.block_size) (value of type _Ctype_ulong) as _Ctype_uint value in argument to (_Cfunc_sqfs_compressor_config_init)
[i586] vendor/github.com/anuvu/squashfs/squash.go:630:83: cannot use _Ctype_ulong(sqfs.super.block_size) (value of type _Ctype_ulong) as _Ctype_uint value in variable declaration

Can you help me with it, please?

For understanding, i need to build Stacker and have buildings require on you there.

Upstream squashfs-tools-ng had a bug with backslashes in filenames which we noticed as #6.
I put a PR at AgentD/squashfs-tools-ng#78 to fix.
I fixed #6 here with PR #7 - which pointed at my personal repo rather than upstream.

After AgentD/squashfs-tools-ng#78 makes its way into the fixes/1.0.0 branch, we need to change the git repo referenced in setup to back to upstream.

side note: Granted, this is a problem with Ubuntu not having a backported lib from jammy / hirsuite and my use of an outdated Ubuntu install. However, if anyone has any idea, please do share it.

~/Projects/squashfs$ make
go build ./...
go: downloading github.com/urfave/cli/v2 v2.2.0
go: downloading golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae
go: downloading github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d
# pkg-config --cflags  -- libsquashfs1
pkg-config: exec: "pkg-config": executable file not found in $PATH

####
~/Projects/squashfs$ make
go build ./...
# pkg-config --cflags  -- libsquashfs1
Package libsquashfs1 was not found in the pkg-config search path.
Perhaps you should add the directory containing `libsquashfs1.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libsquashfs1' found
pkg-config: exit status 1
make: *** [Makefile:17: .build] Error 2

Is there a backport of libsquashfs1 back to focal? I am trying to build umoci in order to build stacker for my Ubuntu Focal.
https://packages.ubuntu.com/search?keywords=squash