[AVFS] Filenames in a mounted avfs FS

[Francesco C. <fra...@gm...>]

Hello.
I've started to use AVFS with Alpine Linux, which is built with these options:

 ./configure 
 --build=$CBUILD 
 --host=$CHOST 
 --enable-fuse 
 --enable-library 
 --with-system-zlib 
 --with-system-bzlib 
 --with-xz 
 --with-zstd 
 --prefix=/usr 

When I try to cd into a tar.gz file, it works if the file has tar.gz as extension, but not with another one (like, of example, apk).

Small example and demo:

# file zstd-static-1.4.0-r0.apk
zstd-static-1.4.0-r0.apk: gzip compressed data, max compression, from Unix, original size modulo 2^32 849920

#cd zstd-static-1.4.0-r0.apk#
-ash: cd: can't cd to zstd-static-1.4.0-r0.apk#: No such file or directory

(running avfs -d, i got this message:
LOOKUP /mirror/alpine/alpine/v3.10/main/x86_64/zstd-static-1.4.0-r0.apk#
getattr /mirror/alpine/alpine/v3.10/main/x86_64/zstd-static-1.4.0-r0.apk#
 unique: 27554, error: -2 (No such file or directory), outsize: 16

and /var/log/messages dump this error:
Jul 25 07:20:19 ita-al-mirror user.info avfs[6534]: UZIP: Couldn't find End of Central Directory Record )

If i rename that apk in tar.gz, it works:

# mv zstd-static-1.4.0-r0.apk zstd-static-1.4.0-r0.tar.gz
# cd zstd-static-1.4.0-r0.tar.gz#
zstd-static-1.4.0-r0.tar.gz## ls
usr
zstd-static-1.4.0-r0.tar.gz## 

I've tried to check if I was missing some ./configure param, but seems not.
I'm testing this in a LVM FS, with this kernel and arch:
# uname -ar
Linux ita-al-mirror 4.19.58-0-vanilla #1-Alpine SMP Wed Jul 10 12:40:48 UTC 2019 x86_64 Linux

Thanks.

.: Francesco
.: Francesco Colista