Re: [Nano-devel] Alert on unknown file: magic_file(...) failed: line 156: regex error 10

[Michal Nowak]

On 04/12/19 07:04 PM, Benno Schulenberg wrote:
> Hello Michal,

Hi Benno,

> Op 10-04-19 om 13:53 schreef Michal Nowak:
> > As OpenIndiana is based on from illumos an non-GNU operating system, and GNU is
> > now what's in many cases expected, in some cases functionality of the system are
> > delivered "twice".
> >
> > So, e.g. we ship two magic.h headers, the former one from
> > https://github.com/file/file and the latter one from illumos:
> >
> > usr/include/magic.h     pkg:/library/address@hidden
> > usr/include/ast/magic.h pkg:/system/address@hidden
> >
> > Maybe the illumos ast/magic.h was picked instead of the GNU one?
>
> You could check by running:
>      strace -f make 2>TRAIL; grep magic.h TRAIL
>
> But I don't think it matters which header gets used but which data files.
> When I run:
>
>      strace src/nano README 2>TRAIL; grep magic TRAIL
>
> and press ^X, it opened /etc/magic and /usr/share/misc/magic.mgc.
> The first is empty apart from two comment lines, and the second
> is filled with binary data.  Possibly in your case it finds multiple
> binary data files?

It seems to me that only /usr/share/misc/magic.mgc is taken into account:

stat("/export/home/newman/.magic.mgc", 0xFFFFFD7FFFDFF040) Err#2 ENOENT
stat("/export/home/newman/.magic", 0xFFFFFD7FFFDFF040) Err#2 ENOENT
open("/usr/share/misc/magic.mgc", O_RDONLY)   = 3
fstat(3, 0xFFFFFD7FFFDFF120)                    = 0
mmap(0x00000000, 5408368, PROT_READ|PROT_WRITE, MAP_PRIVATE, 3, 0) = 
0xFFFFFD7FEEC00000
close(3)                                        = 0

/usr/share/misc/magic.mgc is provided by the expected GNU file package:

$ pkg search /usr/share/misc/magic.mgc
INDEX      ACTION VALUE                    PACKAGE
path       file   usr/share/misc/magic.mgc 
pkg:/library/address@hidden

This is what the GNU `file` says about the file in question:

$ gfile file
file: ASCII text

This is what illumos `file` says about it:

$ file file
file:           ascii text

Michal

> > I think going with --disable-libmagic is the best for us for now.
> Sounds good.
>
> Benno